[maven-release-plugin] prepare release twelvemonkeys-3.6.2

(cherry picked from commit de02e3d7e0)

README.md

@@ -1,15 +1,13 @@
-## Latest
-
-Master branch build status: [![Build Status](https://travis-ci.org/haraldk/TwelveMonkeys.svg?branch=master)](https://travis-ci.org/haraldk/TwelveMonkeys)
-
-Latest release is TwelveMonkeys ImageIO [3.5](https://search.maven.org/search?q=g:com.twelvemonkeys.imageio%20AND%20v:3.5) (Jan. 22nd, 2020).
-[Release notes](https://github.com/haraldk/TwelveMonkeys/releases/latest).
+[![Build Status](https://travis-ci.org/haraldk/TwelveMonkeys.svg?branch=master)](https://travis-ci.org/haraldk/TwelveMonkeys) 
+[![Maven Central](https://maven-badges.herokuapp.com/maven-central/com.twelvemonkeys.imageio/imageio/badge.svg)](https://maven-badges.herokuapp.com/maven-central/com.twelvemonkeys.imageio/imageio)
+[![StackOverflow](https://img.shields.io/badge/tag-twelvemonkeys-orange.svg)](https://stackoverflow.com/questions/tagged/twelvemonkeys)
+[![Donate](https://img.shields.io/badge/donate-PayPal-blue.svg)](https://paypal.me/haraldk76/100)
 
 ## About
 
 TwelveMonkeys ImageIO is a collection of plugins and extensions for Java's ImageIO.
 
-These plugins extends the number of image file formats supported in Java, using the javax.imageio.* package.
+These plugins extend the number of image file formats supported in Java, using the `javax.imageio.*` package.
 The main purpose of this project is to provide support for formats not covered by the JRE itself.
 
 Support for formats is important, both to be able to read data found
@@ -19,246 +17,58 @@ The goal is to create a set of efficient and robust ImageIO plug-ins, that can b
 
 ----
 
-## Features
+## File formats supported
 
-Mainstream format support
+| Plugin | Format   | Description           | Read | Write | Metadata | Notes |
+| ------ | -------- | -----------           |:----:|:-----:| -------- | ----- |
+| Batik  | **SVG**  | Scalable Vector Graphics | ✔ |  -  | - | Requires [Batik](https://xmlgraphics.apache.org/batik/)
+|        | WMF      | MS Windows Metafile      | ✔ |  -  | - | Requires [Batik](https://xmlgraphics.apache.org/batik/)
+| [BMP](https://github.com/haraldk/TwelveMonkeys/wiki/BMP-Plugin)    | **BMP**  | MS Windows and IBM OS/2 Device Independent Bitmap | ✔  | ✔   | Native & Standard |
+|        | CUR      | MS Windows Cursor Format  | ✔  | -   | - |
+|        | ICO      | MS Windows Icon Format    | ✔  | ✔   | - | 
+| [HDR](https://github.com/haraldk/TwelveMonkeys/wiki/HDR-Plugin)    | HDR      | Radiance High Dynamic Range RGBE Format | ✔  | - | Standard | 
+| [ICNS](https://github.com/haraldk/TwelveMonkeys/wiki/ICNS-Plugin)   | ICNS     | Apple Icon Image | ✔  | ✔   | -  | 
+| [IFF](https://github.com/haraldk/TwelveMonkeys/wiki/IFF-Plugin)    | IFF      | Commodore Amiga/Electronic Arts Interchange File Format | ✔  | ✔   | - | 
+| [JPEG](https://github.com/haraldk/TwelveMonkeys/wiki/JPEG-Plugin)   | **JPEG** | Joint Photographers Expert Group | ✔  | ✔   | Native & Standard |  
+| [PCX](https://github.com/haraldk/TwelveMonkeys/wiki/PCX-Plugin)    | PCX      | ZSoft Paintbrush Format | ✔  | -  | Standard | 
+|        | DCX      | Multi-page PCX fax document | ✔  | -   | Standard | 
+| [PICT](https://github.com/haraldk/TwelveMonkeys/wiki/PICT-Plugin)   | PICT     | Apple Mac Paint Picture Format | ✔  | -   | - | 
+| [PNM](https://github.com/haraldk/TwelveMonkeys/wiki/PNM-Plugin)    | PAM      | NetPBM Portable Any Map | ✔  | ✔   | Standard | 
+|        | PBM      | NetPBM Portable Bit Map | ✔  | -     | Standard | 
+|        | PGM      | NetPBM Portable Grey Map | ✔  | -   | Standard | 
+|        | PPM      | NetPBM Portable Pix Map | ✔  | ✔   | Standard | 
+|        | PFM      | Portable Float Map | ✔  | -   | Standard | 
+| [PSD](https://github.com/haraldk/TwelveMonkeys/wiki/PSD-Plugin)    | **PSD**  | Adobe Photoshop Document | ✔  | - | Native & Standard |  
+|        |  PSB     | Adobe Photoshop Large Document | ✔  | - | Native & Standard | 
+| [SGI](https://github.com/haraldk/TwelveMonkeys/wiki/SGI-Plugin)    | SGI      | Silicon Graphics Image Format  | ✔  | -   | Standard | 
+| [TGA](https://github.com/haraldk/TwelveMonkeys/wiki/TGA-Plugin)    | TGA      | Truevision TGA Image Format  | ✔  | ✔   | Standard | 
+|ThumbsDB| Thumbs.db| MS Windows Thumbs DB | ✔  | -   | - | OLE2 Compound Document based format only
+| [TIFF](https://github.com/haraldk/TwelveMonkeys/wiki/TIFF-Plugin)   | **TIFF** | Aldus/Adobe Tagged Image File Format | ✔  | ✔ | Native & Standard | 
+|        | BigTIFF  |  | ✔  | - | Native & Standard |  
+| [WebP](https://github.com/haraldk/TwelveMonkeys/wiki/WebP-Plugin)   | **WebP** | Google WebP Format | ✔  | - | Standard |  In progress
+| XWD    | XWD      | X11 Window Dump Format | ✔  | -   | Standard | 
 
-#### BMP - MS Windows/IBM OS/2 Device Independent Bitmap
- 
-* Read support for all known versions of the DIB/BMP format
-  * Indexed color, 1, 4 and 8 bit, including 4 and 8 bit RLE
-  * RGB, 16, 24 and 32 bit
-  * Embedded PNG and JPEG data
-  * Windows and OS/2 versions
-* Native and standard metadata format
-
-#### JPEG
-
-* Read support for the following JPEG "flavors":
-  * All JFIF compliant JPEGs
-  * All Exif compliant JPEGs
-  * YCbCr JPEGs without JFIF segment (converted to RGB, using embedded ICC profile)
-  * CMYK JPEGs (converted to RGB by default or as CMYK, using embedded ICC profile)
-  * Adobe YCCK JPEGs (converted to RGB by default or as CMYK, using embedded ICC profile)
-  * JPEGs containing ICC profiles with interpretation other than 'Perceptual' or class other than 'Display'
-  * JPEGs containing ICC profiles that are incompatible with stream data, corrupted ICC profiles or corrupted `ICC_PROFILE` segments
-  * JPEGs using non-standard color spaces, unsupported by Java 2D
-  * JPEGs with APP14/Adobe segments with length other than 14 bytes
-  * 8 bit JPEGs with 16 bit DQT segments
-  * Issues warnings instead of throwing exceptions in cases of corrupted or non-conformant data where ever the image 
-  data can still be read in a reasonable way
-* Thumbnail support:
-  * JFIF thumbnails (even if stream contains "inconsistent metadata")
-  * JFXX thumbnails (JPEG, Indexed and RGB)
-  * EXIF thumbnails (JPEG, RGB and YCbCr)
-* Metadata support:
-  * JPEG metadata in both standard and native formats (even if stream contains "inconsistent metadata")
-  * `javax_imageio_jpeg_image_1.0` format (currently as native format, may change in the future)
-  * Non-conforming combinations of JFIF, Exif and Adobe markers, using "unknown" segments in the
-   "MarkerSequence" tag for the unsupported segments (for `javax_imageio_jpeg_image_1.0` format)
-* Extended write support:
-  * CMYK JPEGs
-  * YCCK JPEGs in progress
-
-#### JPEG-2000
-
-* Possibly coming in the future, pending some license issues.
-
-If you are one of the authors, or know one of the authors and/or the current license holders of either the original
-jj2000 package or the JAI ImageIO project, please contact me (I've tried to get in touch in various ways, 
-without success so far).
-
-Alternatively, if you have or know of a JPEG-2000 implementation in Java with a suitable license, get in touch. :-)
-
-#### PNM - NetPBM Portable Any Map
-
-* Read support for the following file types:
-  * PBM in 'P1' (ASCII) and 'P4' (binary) formats, 1 bit per pixel
-  * PGM in 'P2' (ASCII) and 'P5' (binary) formats, up to 16/32 bits per pixel
-  * PPM in 'P3' (ASCII) and 'P6' (binary) formats, up to 16/32 bits per pixel component
-  * PAM in 'P7' (binary) format up to 32 bits per pixel component
-  * Limited support for PFM in 'Pf' (gray) and 'PF' (RGB) formats, 32 bits floating point
-* Write support for the following formats:
-  * PPM in 'P6' (binary) format
-  * PAM in 'P7' (binary) format
-* Standard metadata support
-
-#### PSD - Adobe Photoshop Document
-
-* Read support for the following file types:
-  * Monochrome, 1 channel, 1 bit
-  * Indexed, 1 channel, 8 bit
-  * Gray, 1 channel, 8, 16 and 32 bit
-  * Duotone, 1 channel, 8, 16 and 32 bit
-  * RGB, 3-4 channels, 8, 16 and 32 bit
-  * CMYK, 4-5 channels, 8, 16 and 32 bit
-* Read support for the following compression types:
-  * Uncompressed
-  * RLE (PackBits)
-* Layer support
-  * Image layers only, in all of the above types
-* Thumbnail support
-  * JPEG
-  * RAW (RGB)
-* Support for "Large Document Format" (PSB)
-* Native and Standard metadata support
-
-#### TIFF - Aldus/Adobe Tagged Image File Format
-
-* Read support for the following "Baseline" TIFF file types:
-  * Class B (Bi-level), all relevant compression types, 1 bit per sample
-  * Class G (Gray), all relevant compression types, 2, 4, 8, 16 or 32 bits per sample, unsigned integer
-  * Class P (Palette/indexed color), all relevant compression types, 1, 2, 4, 8 or 16 bits per sample, unsigned integer
-  * Class R (RGB), all relevant compression types, 8 or 16 bits per sample, unsigned integer
-* Read support for the following TIFF extensions:
-  * Tiling
-  * Class F (Facsimile), CCITT Modified Huffman RLE, T4 and T6 (type 2, 3 and 4) compressions.
-  * LZW Compression (type 5)
-  * "Old-style" JPEG Compression (type 6), as a best effort, as the spec is not well-defined
-  * JPEG Compression (type 7)
-  * ZLib (aka Adobe-style Deflate) Compression (type 8)
-  * Deflate Compression (type 32946)
-  * Horizontal differencing Predictor (type 2) for LZW, ZLib, Deflate and PackBits compression
-  * Alpha channel (ExtraSamples type 1/Associated Alpha and type 2/Unassociated Alpha)
-  * CMYK data (PhotometricInterpretation type 5/Separated)
-  * YCbCr data (PhotometricInterpretation type 6/YCbCr) for JPEG
-  * CIELab data in TIFF, ITU and ICC variants (PhotometricInterpretation type 9, 10 and 11)
-  * Planar data (PlanarConfiguration type 2/Planar)
-  * ICC profiles (ICCProfile)
-  * BitsPerSample values up to 16 for most PhotometricInterpretations
-  * Multiple images (pages) in one file
-* Write support for most "Baseline" TIFF options
-  * Uncompressed, PackBits, ZLib and Deflate 
-  * Additional support for CCITT T4 and and T6 compressions.
-  * Additional support for LZW and JPEG (type 7) compressions
-  * Horizontal differencing Predictor (type 2) for LZW, ZLib, Deflate
-* Native and Standard metadata support
-
-Legacy formats
-
-#### HDR - Radiance High Dynamic Range RGBE Format
-
-* Read support for the most common RGBE (.hdr) format
-* Samples are converted to 32 bit floating point (`float`) and normalized using a global tone mapper by default.
-  * Support for custom global tone mappers
-  * Alternatively, use a "null-tone mapper", for unnormalized data (allows local tone mapping)
-* Unconverted RGBE samples accessible using `readRaster`
-* Standard metadata support
-
-#### IFF - Commodore Amiga/Electronic Arts Interchange File Format
-
-* Legacy format, allows reading popular image format from the Commodore Amiga computer.
-* Read support for the following file types:
-  * ILBM Indexed color, 1-8 interleaved bit planes, including 6 bit EHB
-  * ILBM  Gray, 8 bit interleaved bit planes
-  * ILBM RGB, 24 and 32 bit interleaved bit planes
-  * ILBM HAM6 and HAM8
-  * PBM Indexed color, 1-8 bit,
-  * PBM Gray, 8 bit
-  * PBM RGB, 24 and 32 bit
-  * PBM HAM6 and HAM8
-* Write support
-  * ILBM Indexed color, 1-8 bits per sample, 8 bit gray, 24 and 32 bit true color.
-* Support for the following compression types (read/write):
-  * Uncompressed
-  * RLE (PackBits)
-
-#### PCX - ZSoft Paintbrush Format
-
-* Read support for the following file types:
-  * Indexed color, 1, 2, 4 or 8 bits per pixel, bit planes or interleaved
-  * Grayscale, 8 bits per pixel
-  * Color (RGB), 8 bits per pixel component
-* Read support for DCX (multi-page) fax format, containing any of the above types
-* Support for the following compression types:
-  * Uncompressed (experimental)
-  * RLE compressed
-* Standard metadata support
-
-#### PICT - Apple Mac Paint Picture Format
-
-* Legacy format, especially useful for reading OS X clipboard data.
-* Read support for the following file types:
-  * QuickDraw (format support is not complete, but supports most OS X clipboard data as well as RGB pixel data)
-  * QuickDraw bitmap
-  * QuickDraw pixmap
-  * QuickTime stills
-* Write support for RGB pixel data:
-  * QuickDraw pixmap
-
-#### SGI - Silicon Graphics Image Format
-
-* Read support for the following file types:
-  * 1, 2, 3 or 4 channel image data
-  * 8 or 16 bits per pixel component
-* Support for the following compression types:
-  * Uncompressed
-  * RLE compressed
-* Standard metadata support
-
-#### TGA - Truevision TGA Image Format
-
-* Read support for the following file types:
-  * ColorMapped
-  * Monochrome
-  * TrueColor
-* Support for the following compression types:
-  * Uncompressed
-  * RLE compressed
-* Standard metadata support
-* Write support
-
-Icon/other formats
-
-#### ICNS - Apple Icon Image
-
-* Read support for the following icon types:
-  * All known "native" icon types
-  * Large PNG encoded icons
-  * Large JPEG 2000 encoded icons (requires JPEG 2000 ImageIO plugin or fallback to `sips` command line tool)
-* Write support for PNG encoded icons
-
-#### ICO & CUR - MS Windows Icon and Cursor Formats
-
-* Read support for the following file types:
-  * ICO Indexed color, 1, 4 and 8 bit
-  * ICO RGB, 16, 24 and 32 bit
-  * CUR Indexed color, 1, 4 and 8 bit
-  * CUR RGB, 16, 24 and 32 bit
-* Write support
-* *3.1* Note: These formats are now part of the BMP plugin
-
-#### Thumbs.db - MS Windows Thumbs DB
-
-* Read support
-
-Other formats, using 3rd party libraries
-
-#### SVG - Scalable Vector Graphics
-
-* Read-only support using Batik
-
-#### WMF - MS Windows MetaFile
-
-* Limited read-only support using Batik
-
-**Important note on using Batik:** *Please read [The Apache™ XML Graphics Project - Security](http://xmlgraphics.apache.org/security.html), and make sure you use
-either version 1.6.1, 1.7.1 or 1.8+.*
 
+**Important note on using Batik:** *Please read [The Apache™ XML Graphics Project - Security](http://xmlgraphics.apache.org/security.html), 
+and make sure you use either version 1.6.1, 1.7.1, 1.8+ or later.*
 
 ## Basic usage
 
 Most of the time, all you need to do is simply include the plugins in your project and write:
 
-    BufferedImage image = ImageIO.read(file);
+```java
+BufferedImage image = ImageIO.read(file);
+```
 
 This will load the first image of the file, entirely into memory.
 
 The basic and simplest form of writing is:
 
-    if (!ImageIO.write(image, format, file)) {
-       // Handle image not written case
-    }
+```java
+if (!ImageIO.write(image, format, file)) {
+   // Handle image not written case
+}
+```
 
 This will write the entire image into a single file, using the default settings for the given format.
 
@@ -269,50 +79,50 @@ The plugins are discovered automatically at run time. See the [FAQ](#faq) for mo
 If you need more control of read parameters and the reading process, the common idiom for reading is something like:
 
 ```java
-    // Create input stream
-    ImageInputStream input = ImageIO.createImageInputStream(file);
+// Create input stream
+ImageInputStream input = ImageIO.createImageInputStream(file);
+
+try {
+    // Get the reader
+    Iterator<ImageReader> readers = ImageIO.getImageReaders(input);
+
+    if (!readers.hasNext()) {
+        throw new IllegalArgumentException("No reader for: " + file);
+    }
+
+    ImageReader reader = readers.next();
 
     try {
-        // Get the reader
-        Iterator<ImageReader> readers = ImageIO.getImageReaders(input);
+        reader.setInput(input);
 
-        if (!readers.hasNext()) {
-            throw new IllegalArgumentException("No reader for: " + file);
-        }
+        // Optionally, listen for read warnings, progress, etc.
+        reader.addIIOReadWarningListener(...);
+        reader.addIIOReadProgressListener(...);
 
-        ImageReader reader = readers.next();
+        ImageReadParam param = reader.getDefaultReadParam();
 
-        try {
-            reader.setInput(input);
+        // Optionally, control read settings like sub sampling, source region or destination etc.
+        param.setSourceSubsampling(...);
+        param.setSourceRegion(...);
+        param.setDestination(...);
+        // ...
 
-            // Optionally, listen for read warnings, progress, etc.
-            reader.addIIOReadWarningListener(...);
-            reader.addIIOReadProgressListener(...);
+        // Finally read the image, using settings from param
+        BufferedImage image = reader.read(0, param);
 
-            ImageReadParam param = reader.getDefaultReadParam();
-
-            // Optionally, control read settings like sub sampling, source region or destination etc.
-            param.setSourceSubsampling(...);
-            param.setSourceRegion(...);
-            param.setDestination(...);
-            // ...
-
-            // Finally read the image, using settings from param
-            BufferedImage image = reader.read(0, param);
-
-            // Optionally, read thumbnails, meta data, etc...
-            int numThumbs = reader.getNumThumbnails(0);
-            // ...
-        }
-        finally {
-            // Dispose reader in finally block to avoid memory leaks
-            reader.dispose();
-        }
+        // Optionally, read thumbnails, meta data, etc...
+        int numThumbs = reader.getNumThumbnails(0);
+        // ...
     }
     finally {
-        // Close stream in finally block to avoid resource leaks
-        input.close();
+        // Dispose reader in finally block to avoid memory leaks
+        reader.dispose();
     }
+}
+finally {
+    // Close stream in finally block to avoid resource leaks
+    input.close();
+}
 ```
 
 Query the reader for source image dimensions using `reader.getWidth(n)` and `reader.getHeight(n)` without reading the
@@ -324,86 +134,62 @@ It's also possible to read multiple images from the same file in a loop, using `
 If you need more control of write parameters and the writing process, the common idiom for writing is something like:
 
 ```java
-    // Get the writer
-    Iterator<ImageWriter> writers = ImageIO.getImageWritersByFormatName(format);
+// Get the writer
+Iterator<ImageWriter> writers = ImageIO.getImageWritersByFormatName(format);
 
-    if (!writers.hasNext()) {
-        throw new IllegalArgumentException("No writer for: " + format);
-    }
+if (!writers.hasNext()) {
+    throw new IllegalArgumentException("No writer for: " + format);
+}
 
-    ImageWriter writer = writers.next();
+ImageWriter writer = writers.next();
+
+try {
+    // Create output stream
+    ImageOutputStream output = ImageIO.createImageOutputStream(file);
 
     try {
-        // Create output stream
-        ImageOutputStream output = ImageIO.createImageOutputStream(file);
+        writer.setOutput(output);
 
-        try {
-            writer.setOutput(output);
+        // Optionally, listen to progress, warnings, etc.
 
-            // Optionally, listen to progress, warnings, etc.
+        ImageWriteParam param = writer.getDefaultWriteParam();
 
-            ImageWriteParam param = writer.getDefaultWriteParam();
+        // Optionally, control format specific settings of param (requires casting), or
+        // control generic write settings like sub sampling, source region, output type etc.
 
-            // Optionally, control format specific settings of param (requires casting), or
-            // control generic write settings like sub sampling, source region, output type etc.
-
-            // Optionally, provide thumbnails and image/stream metadata
-            writer.write(..., new IIOImage(..., image, ...), param);
-        }
-        finally {
-            // Close stream in finally block to avoid resource leaks
-            output.close();
-        }
+        // Optionally, provide thumbnails and image/stream metadata
+        writer.write(..., new IIOImage(..., image, ...), param);
     }
     finally {
-        // Dispose writer in finally block to avoid memory leaks
-        writer.dispose();
+        // Close stream in finally block to avoid resource leaks
+        output.close();
     }
+}
+finally {
+    // Dispose writer in finally block to avoid memory leaks
+    writer.dispose();
+}
 ```
 
 For more advanced usage, and information on how to use the ImageIO API, I suggest you read the
 [Java Image I/O API Guide](http://docs.oracle.com/javase/7/docs/technotes/guides/imageio/spec/imageio_guideTOC.fm.html)
 from Oracle.
 
+#### Adobe Clipping Path support
 
-#### Deploying the plugins in a web app
+```java
+import com.twelvemonkeys.imageio.path.Paths;
 
-Because the `ImageIO` plugin registry (the `IIORegistry`) is "VM global", it doesn't by default work well with
-servlet contexts. This is especially evident if you load plugins from the `WEB-INF/lib` or `classes` folder.
-Unless you add `ImageIO.scanForPlugins()` somewhere in your code, the plugins might never be available at all.
+...
 
-In addition, servlet contexts dynamically loads and unloads classes (using a new class loader per context).
-If you restart your application, old classes will by default remain in memory forever (because the next time
-`scanForPlugins` is called, it's another `ClassLoader` that scans/loads classes, and thus they will be new instances
-in the registry). If a read is attempted using one of the remaining "old" readers, weird exceptions
-(like `NullPointerException`s when accessing `static final` initialized fields or `NoClassDefFoundError`s 
-for uninitialized inner classes) may occur.
+try (ImageInputStream stream = ImageIO.createImageInputStream(new File("image_with_path.jpg")) {
+    BufferedImage image = Paths.readClipped(stream);
 
-To work around both the discovery problem and the resource leak,
-it is *strongly recommended* to use the `IIOProviderContextListener` that implements
-dynamic loading and unloading of ImageIO plugins for web applications.
-
-```xml
-    <web-app ...>
-
-    ...
-
-        <listener>
-            <display-name>ImageIO service provider loader/unloader</display-name>
-            <listener-class>com.twelvemonkeys.servlet.image.IIOProviderContextListener</listener-class>
-        </listener>
-
-    ...
-
-    </web-app>
+    // Do something with the clipped image...
+}
 ```
+See [Adobe Clipping Path support on the Wiki](https://github.com/haraldk/TwelveMonkeys/wiki/Photoshop-Clipping-Path-support) for more details and example code.
 
-Loading plugins from `WEB-INF/lib` without the context listener installed is unsupported and will not work correctly.
-
-The context listener has no dependencies to the TwelveMonkeys ImageIO plugins, and may be used with JAI ImageIO 
-or other ImageIO plugins as well.
-
-Another safe option, is to place the JAR files in the application server's shared or common lib folder. 
 
 #### Using the ResampleOp
 
@@ -411,15 +197,15 @@ The library comes with a resampling (image resizing) operation, that contains ma
 to provide excellent results at reasonable speed.
 
 ```java
-    import com.twelvemonkeys.image.ResampleOp;
+import com.twelvemonkeys.image.ResampleOp;
 
-    ...
+...
 
-    BufferedImage input = ...; // Image to resample
-    int width, height = ...; // new width/height
+BufferedImage input = ...; // Image to resample
+int width, height = ...; // new width/height
 
-    BufferedImageOp resampler = new ResampleOp(width, height, ResampleOp.FILTER_LANCZOS); // A good default filter, see class documentation for more info
-    BufferedImage output = resampler.filter(input, null);
+BufferedImageOp resampler = new ResampleOp(width, height, ResampleOp.FILTER_LANCZOS); // A good default filter, see class documentation for more info
+BufferedImage output = resampler.filter(input, null);
 ```
 
 #### Using the DiffusionDither
@@ -428,14 +214,14 @@ The library comes with a dithering operation, that can be used to convert `Buffe
 Floyd-Steinberg error-diffusion dither.
 
 ```java
-    import com.twelvemonkeys.image.DiffusionDither;
+import com.twelvemonkeys.image.DiffusionDither;
 
-    ...
+...
 
-    BufferedImage input = ...; // Image to dither
+BufferedImage input = ...; // Image to dither
 
-    BufferedImageOp ditherer = new DiffusionDither();
-    BufferedImage output = ditherer.filter(input, null);
+BufferedImageOp ditherer = new DiffusionDither();
+BufferedImage output = ditherer.filter(input, null);
 ```
 
 ## Building
@@ -473,10 +259,10 @@ The ImageIO registry and service lookup mechanism will make sure the plugins are
 To verify that the JPEG plugin is installed and used at run-time, you could use the following code:
 
 ```java
-    Iterator<ImageReader> readers = ImageIO.getImageReadersByFormatName("JPEG");
-    while (readers.hasNext()) {
-        System.out.println("reader: " + readers.next());
-    }
+Iterator<ImageReader> readers = ImageIO.getImageReadersByFormatName("JPEG");
+while (readers.hasNext()) {
+    System.out.println("reader: " + readers.next());
+}
 ```
 
 The first line should print:
@@ -488,82 +274,144 @@ The first line should print:
 To depend on the JPEG and TIFF plugin using Maven, add the following to your POM:
 
 ```xml
+...
+<dependencies>
     ...
-    <dependencies>
-        ...
-        <dependency>
-            <groupId>com.twelvemonkeys.imageio</groupId>
-            <artifactId>imageio-jpeg</artifactId>
-            <version>3.5</version>
-        </dependency>
-        <dependency>
-            <groupId>com.twelvemonkeys.imageio</groupId>
-            <artifactId>imageio-tiff</artifactId>
-            <version>3.5</version>
-        </dependency>
+    <dependency>
+        <groupId>com.twelvemonkeys.imageio</groupId>
+        <artifactId>imageio-jpeg</artifactId>
+        <version>3.6.1</version>
+    </dependency>
+    <dependency>
+        <groupId>com.twelvemonkeys.imageio</groupId>
+        <artifactId>imageio-tiff</artifactId>
+        <version>3.6.1</version>
+    </dependency>
 
-        <!--
-        Optional dependency. Needed only if you deploy `ImageIO` plugins as part of a web app.
-        Make sure you add the `IIOProviderContextListener` to your `web.xml`, see above.
-        -->
-        <dependency>
-            <groupId>com.twelvemonkeys.servlet</groupId>
-            <artifactId>servlet</artifactId>
-            <version>3.5</version>
-        </dependency>
-    </dependencies>
+    <!--
+    Optional dependency. Needed only if you deploy `ImageIO` plugins as part of a web app.
+    Make sure you add the `IIOProviderContextListener` to your `web.xml`, see above.
+    -->
+    <dependency>
+        <groupId>com.twelvemonkeys.servlet</groupId>
+        <artifactId>servlet</artifactId>
+        <version>3.6.1</version>
+    </dependency>
+</dependencies>
 ```
 
 #### Manual dependency example
 
 To depend on the JPEG and TIFF plugin in your IDE or program, add all of the following JARs to your class path:
 
-    twelvemonkeys-common-lang-3.5.jar
-    twelvemonkeys-common-io-3.5.jar
-    twelvemonkeys-common-image-3.5.jar
-    twelvemonkeys-imageio-core-3.5.jar
-    twelvemonkeys-imageio-metadata-3.5.jar
-    twelvemonkeys-imageio-jpeg-3.5.jar
-    twelvemonkeys-imageio-tiff-3.5.jar
+    twelvemonkeys-common-lang-3.6.1.jar
+    twelvemonkeys-common-io-3.6.1.jar
+    twelvemonkeys-common-image-3.6.1.jar
+    twelvemonkeys-imageio-core-3.6.1.jar
+    twelvemonkeys-imageio-metadata-3.6.1.jar
+    twelvemonkeys-imageio-jpeg-3.6.1.jar
+    twelvemonkeys-imageio-tiff-3.6.1.jar
+
+#### Deploying the plugins in a web app
+
+Because the `ImageIO` plugin registry (the `IIORegistry`) is "VM global", it doesn't by default work well with
+servlet contexts. This is especially evident if you load plugins from the `WEB-INF/lib` or `classes` folder.
+Unless you add `ImageIO.scanForPlugins()` somewhere in your code, the plugins might never be available at all.
+
+In addition, servlet contexts dynamically loads and unloads classes (using a new class loader per context).
+If you restart your application, old classes will by default remain in memory forever (because the next time
+`scanForPlugins` is called, it's another `ClassLoader` that scans/loads classes, and thus they will be new instances
+in the registry). If a read is attempted using one of the remaining "old" readers, weird exceptions
+(like `NullPointerException`s when accessing `static final` initialized fields or `NoClassDefFoundError`s 
+for uninitialized inner classes) may occur.
+
+To work around both the discovery problem and the resource leak,
+it is *strongly recommended* to use the `IIOProviderContextListener` that implements
+dynamic loading and unloading of ImageIO plugins for web applications.
+
+```xml
+<web-app ...>
+
+...
+
+    <listener>
+        <display-name>ImageIO service provider loader/unloader</display-name>
+        <listener-class>com.twelvemonkeys.servlet.image.IIOProviderContextListener</listener-class>
+    </listener>
+
+...
+
+</web-app>
+```
+
+Loading plugins from `WEB-INF/lib` without the context listener installed is unsupported and will not work correctly.
+
+The context listener has no dependencies to the TwelveMonkeys ImageIO plugins, and may be used with JAI ImageIO 
+or other ImageIO plugins as well.
+
+Another safe option, is to place the JAR files in the application server's shared or common lib folder. 
+
+#### Including the plugins in a "fat" JAR
+
+The recommended way to use the plugins, is just to include the JARs as-is in your project, through a Maven dependency or similar. 
+Re-packaging is not necessary to use the library, and not recommended. 
+ 
+However, if you like to create a "fat" 
+JAR, or otherwise like to re-package the JARs for some reason, it's important to remember that automatic discovery of 
+the plugins by ImageIO depends on the 
+[Service Provider Interface (SPI)](https://docs.oracle.com/javase/tutorial/sound/SPI-intro.html) mechanism. 
+In short, each JAR contains a special folder, named `META-INF/services` containing one or more files, 
+typically `javax.imageio.spi.ImageReaderSpi` and `javax.imageio.spi.ImageWriterSpi`. 
+These files exist *with the same name in every JAR*, 
+so if you simply unpack everything to a single folder or create a JAR, files will be overwritten and behavior be 
+unspecified (most likely you will end up with a single plugin being installed). 
+
+The solution is to make sure all files with the same name, are merged to a single file, 
+containing all the SPI information of each type. If using the Maven Shade plugin, you should use the 
+[ServicesResourceTransformer](https://maven.apache.org/plugins/maven-shade-plugin/examples/resource-transformers.html#ServicesResourceTransformer)
+to properly merge these files. You may also want to use the 
+[ManifestResourceTransforme](https://maven.apache.org/plugins/maven-shade-plugin/examples/resource-transformers.html#ManifestResourceTransformer) 
+to get the correct vendor name, version info etc. 
+Other "fat" JAR bundlers will probably have similar mechanisms to merge entries with the same name.
 
 ### Links to prebuilt binaries
 
-##### Latest version (3.5)
+##### Latest version (3.6.1)
 
 Requires Java 7 or later.
  
 Common dependencies
-* [common-lang-3.5.jar](http://search.maven.org/remotecontent?filepath=com/twelvemonkeys/common/common-lang/3.5/common-lang-3.5.jar)
-* [common-io-3.5.jar](http://search.maven.org/remotecontent?filepath=com/twelvemonkeys/common/common-io/3.5/common-io-3.5.jar)
-* [common-image-3.5.jar](http://search.maven.org/remotecontent?filepath=com/twelvemonkeys/common/common-image/3.5/common-image-3.5.jar)
+* [common-lang-3.6.1.jar](http://search.maven.org/remotecontent?filepath=com/twelvemonkeys/common/common-lang/3.6.1/common-lang-3.6.1.jar)
+* [common-io-3.6.1.jar](http://search.maven.org/remotecontent?filepath=com/twelvemonkeys/common/common-io/3.6.1/common-io-3.6.1.jar)
+* [common-image-3.6.1.jar](http://search.maven.org/remotecontent?filepath=com/twelvemonkeys/common/common-image/3.6.1/common-image-3.6.1.jar)
 
 ImageIO dependencies
-* [imageio-core-3.5.jar](http://search.maven.org/remotecontent?filepath=com/twelvemonkeys/imageio/imageio-core/3.5/imageio-core-3.5.jar)
-* [imageio-metadata-3.5.jar](http://search.maven.org/remotecontent?filepath=com/twelvemonkeys/imageio/imageio-metadata/3.5/imageio-metadata-3.5.jar)
+* [imageio-core-3.6.1.jar](http://search.maven.org/remotecontent?filepath=com/twelvemonkeys/imageio/imageio-core/3.6.1/imageio-core-3.6.1.jar)
+* [imageio-metadata-3.6.1.jar](http://search.maven.org/remotecontent?filepath=com/twelvemonkeys/imageio/imageio-metadata/3.6.1/imageio-metadata-3.6.1.jar)
 
 ImageIO plugins
-* [imageio-bmp-3.5.jar](http://search.maven.org/remotecontent?filepath=com/twelvemonkeys/imageio/imageio-bmp/3.5/imageio-bmp-3.5.jar)
-* [imageio-jpeg-3.5.jar](http://search.maven.org/remotecontent?filepath=com/twelvemonkeys/imageio/imageio-jpeg/3.5/imageio-jpeg-3.5.jar)
-* [imageio-tiff-3.5.jar](http://search.maven.org/remotecontent?filepath=com/twelvemonkeys/imageio/imageio-tiff/3.5/imageio-tiff-3.5.jar)
-* [imageio-pnm-3.5.jar](http://search.maven.org/remotecontent?filepath=com/twelvemonkeys/imageio/imageio-pnm/3.5/imageio-pnm-3.5.jar)
-* [imageio-psd-3.5.jar](http://search.maven.org/remotecontent?filepath=com/twelvemonkeys/imageio/imageio-psd/3.5/imageio-psd-3.5.jar)
-* [imageio-hdr-3.5.jar](http://search.maven.org/remotecontent?filepath=com/twelvemonkeys/imageio/imageio-hdr/3.5/imageio-hdr-3.5.jar)
-* [imageio-iff-3.5.jar](http://search.maven.org/remotecontent?filepath=com/twelvemonkeys/imageio/imageio-iff/3.5/imageio-iff-3.5.jar)
-* [imageio-pcx-3.5.jar](http://search.maven.org/remotecontent?filepath=com/twelvemonkeys/imageio/imageio-pcx/3.5/imageio-pcx-3.5.jar)
-* [imageio-pict-3.5.jar](http://search.maven.org/remotecontent?filepath=com/twelvemonkeys/imageio/imageio-pict/3.5/imageio-pict-3.5.jar)
-* [imageio-sgi-3.5.jar](http://search.maven.org/remotecontent?filepath=com/twelvemonkeys/imageio/imageio-sgi/3.5/imageio-sgi-3.5.jar)
-* [imageio-tga-3.5.jar](http://search.maven.org/remotecontent?filepath=com/twelvemonkeys/imageio/imageio-tga/3.5/imageio-tga-3.5.jar)
-* [imageio-icns-3.5.jar](http://search.maven.org/remotecontent?filepath=com/twelvemonkeys/imageio/imageio-icns/3.5/imageio-icns-3.5.jar)
-* [imageio-thumbsdb-3.5.jar](http://search.maven.org/remotecontent?filepath=com/twelvemonkeys/imageio/imageio-thumbsdb/3.5/imageio-thumbsdb-3.5.jar)
+* [imageio-bmp-3.6.1.jar](http://search.maven.org/remotecontent?filepath=com/twelvemonkeys/imageio/imageio-bmp/3.6.1/imageio-bmp-3.6.1.jar)
+* [imageio-jpeg-3.6.1.jar](http://search.maven.org/remotecontent?filepath=com/twelvemonkeys/imageio/imageio-jpeg/3.6.1/imageio-jpeg-3.6.1.jar)
+* [imageio-tiff-3.6.1.jar](http://search.maven.org/remotecontent?filepath=com/twelvemonkeys/imageio/imageio-tiff/3.6.1/imageio-tiff-3.6.1.jar)
+* [imageio-pnm-3.6.1.jar](http://search.maven.org/remotecontent?filepath=com/twelvemonkeys/imageio/imageio-pnm/3.6.1/imageio-pnm-3.6.1.jar)
+* [imageio-psd-3.6.1.jar](http://search.maven.org/remotecontent?filepath=com/twelvemonkeys/imageio/imageio-psd/3.6.1/imageio-psd-3.6.1.jar)
+* [imageio-hdr-3.6.1.jar](http://search.maven.org/remotecontent?filepath=com/twelvemonkeys/imageio/imageio-hdr/3.6.1/imageio-hdr-3.6.1.jar)
+* [imageio-iff-3.6.1.jar](http://search.maven.org/remotecontent?filepath=com/twelvemonkeys/imageio/imageio-iff/3.6.1/imageio-iff-3.6.1.jar)
+* [imageio-pcx-3.6.1.jar](http://search.maven.org/remotecontent?filepath=com/twelvemonkeys/imageio/imageio-pcx/3.6.1/imageio-pcx-3.6.1.jar)
+* [imageio-pict-3.6.1.jar](http://search.maven.org/remotecontent?filepath=com/twelvemonkeys/imageio/imageio-pict/3.6.1/imageio-pict-3.6.1.jar)
+* [imageio-sgi-3.6.1.jar](http://search.maven.org/remotecontent?filepath=com/twelvemonkeys/imageio/imageio-sgi/3.6.1/imageio-sgi-3.6.1.jar)
+* [imageio-tga-3.6.1.jar](http://search.maven.org/remotecontent?filepath=com/twelvemonkeys/imageio/imageio-tga/3.6.1/imageio-tga-3.6.1.jar)
+* [imageio-icns-3.6.1.jar](http://search.maven.org/remotecontent?filepath=com/twelvemonkeys/imageio/imageio-icns/3.6.1/imageio-icns-3.6.1.jar)
+* [imageio-thumbsdb-3.6.1.jar](http://search.maven.org/remotecontent?filepath=com/twelvemonkeys/imageio/imageio-thumbsdb/3.6.1/imageio-thumbsdb-3.6.1.jar)
 
 ImageIO plugins requiring 3rd party libs
-* [imageio-batik-3.5.jar](http://search.maven.org/remotecontent?filepath=com/twelvemonkeys/imageio/imageio-batik/3.5/imageio-batik-3.5.jar)
+* [imageio-batik-3.6.1.jar](http://search.maven.org/remotecontent?filepath=com/twelvemonkeys/imageio/imageio-batik/3.6.1/imageio-batik-3.6.1.jar)
 
 Photoshop Path support for ImageIO
-* [imageio-clippath-3.5.jar](http://search.maven.org/remotecontent?filepath=com/twelvemonkeys/imageio/imageio-clippath/3.5/imageio-clippath-3.5.jar)
+* [imageio-clippath-3.6.1.jar](http://search.maven.org/remotecontent?filepath=com/twelvemonkeys/imageio/imageio-clippath/3.6.1/imageio-clippath-3.6.1.jar)
 
 Servlet support
-* [servlet-3.5.jar](http://search.maven.org/remotecontent?filepath=com/twelvemonkeys/servlet/servlet/3.5/servlet-3.5.jar)
+* [servlet-3.6.1.jar](http://search.maven.org/remotecontent?filepath=com/twelvemonkeys/servlet/servlet/3.6.1/servlet-3.6.1.jar)
 
 ##### Old version (3.0.x)
 
@@ -600,7 +448,7 @@ Servlet support
 
 The project is distributed under the OSI approved [BSD license](http://opensource.org/licenses/BSD-3-Clause):
 
-    Copyright (c) 2008-2018, Harald Kuhr
+    Copyright (c) 2008-2020, Harald Kuhr
     All rights reserved.
 
     Redistribution and use in source and binary forms, with or without

bom/pom.xml

@@ -5,7 +5,7 @@
     <parent>
         <groupId>com.twelvemonkeys</groupId>
         <artifactId>twelvemonkeys</artifactId>
-        <version>3.6</version>
+        <version>3.6.2</version>
     </parent>
 
     <groupId>com.twelvemonkeys.bom</groupId>
@@ -123,6 +123,11 @@
                 <artifactId>imageio-tiff</artifactId>
                 <version>${project.version}</version>
             </dependency>
+            <dependency>
+                <groupId>com.twelvemonkeys.imageio</groupId>
+                <artifactId>imageio-xwd</artifactId>
+                <version>${project.version}</version>
+            </dependency>
 
             <!-- ImageIO 3rd party dependent plugins -->
             <dependency>

common/common-image/pom.xml

@@ -4,7 +4,7 @@
     <parent>
         <groupId>com.twelvemonkeys.common</groupId>
         <artifactId>common</artifactId>
-        <version>3.6</version>
+        <version>3.6.2</version>
     </parent>
     <artifactId>common-image</artifactId>
     <packaging>jar</packaging>

common/common-io/pom.xml

@@ -4,7 +4,7 @@
     <parent>
         <groupId>com.twelvemonkeys.common</groupId>
         <artifactId>common</artifactId>
-        <version>3.6</version>
+        <version>3.6.2</version>
     </parent>
     <artifactId>common-io</artifactId>
     <packaging>jar</packaging>

common/common-io/src/main/java/com/twelvemonkeys/io/FastByteArrayOutputStream.java

@@ -72,7 +72,7 @@ public final class FastByteArrayOutputStream extends ByteArrayOutputStream {
     }
 
     @Override
-    public void write(byte pBytes[], int pOffset, int pLength) {
+    public void write(byte[] pBytes, int pOffset, int pLength) {
         if ((pOffset < 0) || (pOffset > pBytes.length) || (pLength < 0) ||
                 ((pOffset + pLength) > pBytes.length) || ((pOffset + pLength) < 0)) {
             throw new IndexOutOfBoundsException();
@@ -98,7 +98,7 @@ public final class FastByteArrayOutputStream extends ByteArrayOutputStream {
     private void growIfNeeded(int pNewCount) {
         if (pNewCount > buf.length) {
             int newSize = Math.max(Math.min(buf.length << 1, buf.length + maxGrowSize), pNewCount);
-            byte newBuf[] = new byte[newSize];
+            byte[] newBuf = new byte[newSize];
             System.arraycopy(buf, 0, newBuf, 0, count);
             buf = newBuf;
         }
@@ -113,7 +113,7 @@ public final class FastByteArrayOutputStream extends ByteArrayOutputStream {
     // Non-synchronized version of toByteArray
     @Override
     public byte[] toByteArray() {
-        byte newBuf[] = new byte[count];
+        byte[] newBuf = new byte[count];
         System.arraycopy(buf, 0, newBuf, 0, count);
 
         return newBuf;

common/common-lang/pom.xml

@@ -4,7 +4,7 @@
     <parent>
         <groupId>com.twelvemonkeys.common</groupId>
         <artifactId>common</artifactId>
-        <version>3.6</version>
+        <version>3.6.2</version>
     </parent>
     <artifactId>common-lang</artifactId>
     <packaging>jar</packaging>

common/pom.xml

@@ -4,7 +4,7 @@
     <parent>
         <groupId>com.twelvemonkeys</groupId>
         <artifactId>twelvemonkeys</artifactId>
-        <version>3.6</version>
+        <version>3.6.2</version>
     </parent>
     <groupId>com.twelvemonkeys.common</groupId>
     <artifactId>common</artifactId>
@@ -47,7 +47,7 @@
         <dependency>
             <groupId>junit</groupId>
             <artifactId>junit</artifactId>
-            <version>4.7</version>
+            <version>4.13.1</version>
             <scope>test</scope>
         </dependency>
     </dependencies>

contrib/pom.xml

@@ -4,7 +4,7 @@
     <parent>
         <groupId>com.twelvemonkeys</groupId>
         <artifactId>twelvemonkeys</artifactId>
-        <version>3.6</version>
+        <version>3.6.2</version>
     </parent>
     <groupId>com.twelvemonkeys.contrib</groupId>
     <artifactId>contrib</artifactId>
@@ -65,7 +65,7 @@
         <dependency>
             <groupId>junit</groupId>
             <artifactId>junit</artifactId>
-            <version>4.7</version>
+            <version>4.13.1</version>
             <scope>test</scope>
         </dependency>
     </dependencies>

contrib/src/main/java/com/twelvemonkeys/contrib/exif/EXIFUtilities.java

@@ -35,7 +35,7 @@ public class EXIFUtilities {
      * @throws IOException if an error occurs during reading.
      */
     public static IIOImage readWithOrientation(final URL input) throws IOException {
-        try (ImageInputStream stream = ImageIO.createImageOutputStream(input)) {
+        try (ImageInputStream stream = ImageIO.createImageInputStream(input)) {
             return readWithOrientation(stream);
         }
     }
@@ -48,7 +48,7 @@ public class EXIFUtilities {
      * @throws IOException if an error occurs during reading.
      */
     public static IIOImage readWithOrientation(final InputStream input) throws IOException {
-        try (ImageInputStream stream = ImageIO.createImageOutputStream(input)) {
+        try (ImageInputStream stream = ImageIO.createImageInputStream(input)) {
             return readWithOrientation(stream);
         }
     }
@@ -61,7 +61,7 @@ public class EXIFUtilities {
      * @throws IOException if an error occurs during reading.
      */
     public static IIOImage readWithOrientation(final File input) throws IOException {
-        try (ImageInputStream stream = ImageIO.createImageOutputStream(input)) {
+        try (ImageInputStream stream = ImageIO.createImageInputStream(input)) {
             return readWithOrientation(stream);
         }
     }

imageio/imageio-batik/pom.xml

@@ -4,7 +4,7 @@
     <parent>
         <groupId>com.twelvemonkeys.imageio</groupId>
         <artifactId>imageio</artifactId>
-        <version>3.6</version>
+        <version>3.6.2</version>
     </parent>
     <artifactId>imageio-batik</artifactId>
     <name>TwelveMonkeys :: ImageIO :: Batik Plugin</name>
@@ -39,6 +39,7 @@
             <groupId>com.twelvemonkeys.imageio</groupId>
             <artifactId>imageio-core</artifactId>
             <type>test-jar</type>
+            <scope>test</scope>
         </dependency>
 
         <dependency>

imageio/imageio-batik/src/test/java/com/twelvemonkeys/imageio/plugins/svg/SVGImageReaderTest.java

@@ -31,6 +31,7 @@
 package com.twelvemonkeys.imageio.plugins.svg;
 
 import com.twelvemonkeys.imageio.util.ImageReaderAbstractTest;
+
 import org.junit.Ignore;
 import org.junit.Test;
 
@@ -44,7 +45,6 @@ import javax.imageio.stream.ImageInputStream;
 import java.awt.*;
 import java.awt.image.BufferedImage;
 import java.awt.image.ImagingOpException;
-import java.io.File;
 import java.io.IOException;
 import java.io.InputStream;
 import java.net.URISyntaxException;
@@ -67,7 +67,10 @@ import static org.mockito.Mockito.*;
  */
 public class SVGImageReaderTest extends ImageReaderAbstractTest<SVGImageReader> {
 
-    private SVGImageReaderSpi provider = new SVGImageReaderSpi();
+    @Override
+    protected ImageReaderSpi createProvider() {
+        return new SVGImageReaderSpi();
+    }
 
     protected List<TestData> getTestData() {
         return Arrays.asList(
@@ -82,19 +85,6 @@ public class SVGImageReaderTest extends ImageReaderAbstractTest<SVGImageReader>
         );
     }
 
-    protected ImageReaderSpi createProvider() {
-        return provider;
-    }
-
-    @Override
-    protected SVGImageReader createReader() {
-        return new SVGImageReader(createProvider());
-    }
-
-    protected Class<SVGImageReader> getReaderClass() {
-        return SVGImageReader.class;
-    }
-
     protected List<String> getFormatNames() {
         return Collections.singletonList("svg");
     }
@@ -111,8 +101,6 @@ public class SVGImageReaderTest extends ImageReaderAbstractTest<SVGImageReader>
     public void testScaleViewBox() throws IOException {
         URL svgUrl = getClassLoaderResource("/svg/quadrants.svg");
 
-        File tmpDir = new File(System.getProperty("java.io.tmpdir"));
-
         SVGImageReader reader = createReader();
         SVGReadParam param = new SVGReadParam();
 
@@ -160,11 +148,11 @@ public class SVGImageReaderTest extends ImageReaderAbstractTest<SVGImageReader>
 
     @Test
     @Override
-    public void testReadWithSizeParam() {
+    public void testReadWithSizeParam() throws IOException {
         try {
             super.testReadWithSizeParam();
         }
-        catch (AssertionError failure) {
+        catch (AssertionError | IOException failure) {
             Throwable cause = failure;
 
             while (cause.getCause() != null) {
@@ -299,7 +287,7 @@ public class SVGImageReaderTest extends ImageReaderAbstractTest<SVGImageReader>
             params.setAllowExternalResources(true);
             reader.read(0, params);
 
-            assertTrue("reader.read should've thrown an exception, but didn't", false);
+            fail("reader.read should've thrown an exception, but didn't");
         }
         catch (IIOException allowed) {
             assertTrue(allowed.getMessage().contains("batikLogo.svg")); // The embedded resource we don't find

imageio/imageio-batik/src/test/java/com/twelvemonkeys/imageio/plugins/wmf/WMFImageReaderTest.java

@@ -31,6 +31,7 @@
 package com.twelvemonkeys.imageio.plugins.wmf;
 
 import com.twelvemonkeys.imageio.util.ImageReaderAbstractTest;
+
 import org.junit.Ignore;
 import org.junit.Test;
 
@@ -49,7 +50,10 @@ import java.util.List;
  * @version $Id: WMFImageReaderTest.java,v 1.0 Apr 1, 2008 10:39:17 PM haraldk Exp$
  */
 public class WMFImageReaderTest extends ImageReaderAbstractTest<WMFImageReader> {
-    private WMFImageReaderSpi provider = new WMFImageReaderSpi();
+    @Override
+    protected ImageReaderSpi createProvider() {
+        return new WMFImageReaderSpi();
+    }
 
     protected List<TestData> getTestData() {
         return Collections.singletonList(
@@ -57,27 +61,17 @@ public class WMFImageReaderTest extends ImageReaderAbstractTest<WMFImageReader>
         );
     }
 
-    protected ImageReaderSpi createProvider() {
-        return provider;
-    }
-
     @Override
-    protected WMFImageReader createReader() {
-        return new WMFImageReader(createProvider());
-    }
-
-    protected Class<WMFImageReader> getReaderClass() {
-        return WMFImageReader.class;
-    }
-
     protected List<String> getFormatNames() {
         return Collections.singletonList("wmf");
     }
 
+    @Override
     protected List<String> getSuffixes() {
         return Arrays.asList("wmf", "emf");
     }
 
+    @Override
     protected List<String> getMIMETypes() {
         return Arrays.asList("image/x-wmf", "application/x-msmetafile");
     }

imageio/imageio-bmp/pom.xml

@@ -4,7 +4,7 @@
     <parent>
         <groupId>com.twelvemonkeys.imageio</groupId>
         <artifactId>imageio</artifactId>
-        <version>3.6</version>
+        <version>3.6.2</version>
     </parent>
     <artifactId>imageio-bmp</artifactId>
     <name>TwelveMonkeys :: ImageIO :: BMP plugin</name>
@@ -19,6 +19,7 @@
             <groupId>com.twelvemonkeys.imageio</groupId>
             <artifactId>imageio-core</artifactId>
             <type>test-jar</type>
+            <scope>test</scope>
         </dependency>
     </dependencies>
 </project>

imageio/imageio-bmp/src/main/java/com/twelvemonkeys/imageio/plugins/bmp/BMPImageReader.java

@@ -30,22 +30,6 @@
 
 package com.twelvemonkeys.imageio.plugins.bmp;
 
-import com.twelvemonkeys.imageio.ImageReaderBase;
-import com.twelvemonkeys.imageio.stream.SubImageInputStream;
-import com.twelvemonkeys.imageio.util.IIOUtil;
-import com.twelvemonkeys.imageio.util.ImageTypeSpecifiers;
-import com.twelvemonkeys.imageio.util.ProgressListenerBase;
-import com.twelvemonkeys.io.LittleEndianDataInputStream;
-import com.twelvemonkeys.io.enc.DecoderStream;
-import com.twelvemonkeys.xml.XMLSerializer;
-
-import javax.imageio.*;
-import javax.imageio.event.IIOReadUpdateListener;
-import javax.imageio.event.IIOReadWarningListener;
-import javax.imageio.metadata.IIOMetadata;
-import javax.imageio.metadata.IIOMetadataFormatImpl;
-import javax.imageio.spi.ImageReaderSpi;
-import javax.imageio.stream.ImageInputStream;
 import java.awt.*;
 import java.awt.color.ColorSpace;
 import java.awt.image.*;
@@ -56,6 +40,27 @@ import java.nio.ByteOrder;
 import java.util.Arrays;
 import java.util.Iterator;
 
+import javax.imageio.IIOException;
+import javax.imageio.ImageIO;
+import javax.imageio.ImageReadParam;
+import javax.imageio.ImageReader;
+import javax.imageio.ImageTypeSpecifier;
+import javax.imageio.event.IIOReadUpdateListener;
+import javax.imageio.event.IIOReadWarningListener;
+import javax.imageio.metadata.IIOMetadata;
+import javax.imageio.metadata.IIOMetadataFormatImpl;
+import javax.imageio.spi.ImageReaderSpi;
+import javax.imageio.stream.ImageInputStream;
+
+import com.twelvemonkeys.imageio.ImageReaderBase;
+import com.twelvemonkeys.imageio.stream.SubImageInputStream;
+import com.twelvemonkeys.imageio.util.IIOUtil;
+import com.twelvemonkeys.imageio.util.ImageTypeSpecifiers;
+import com.twelvemonkeys.imageio.util.ProgressListenerBase;
+import com.twelvemonkeys.io.LittleEndianDataInputStream;
+import com.twelvemonkeys.io.enc.DecoderStream;
+import com.twelvemonkeys.xml.XMLSerializer;
+
 /**
  * ImageReader for Microsoft Windows Bitmap (BMP) format.
  *
@@ -125,6 +130,10 @@ public final class BMPImageReader extends ImageReaderBase {
 
             // Read DIB header
             header = DIBHeader.read(imageInput);
+
+            if (pixelOffset < header.size + DIB.BMP_FILE_HEADER_SIZE) {
+                throw new IIOException("Invalid pixel offset: " + pixelOffset);
+            }
         }
     }
 
@@ -207,50 +216,55 @@ public final class BMPImageReader extends ImageReaderBase {
             throw new IIOException("Multiple planes not supported");
         }
 
-        switch (header.getBitCount()) {
-            case 1:
-            case 2:
-            case 4:
-            case 8:
-                return ImageTypeSpecifiers.createFromIndexColorModel(readColorMap());
+        try {
+            switch (header.getBitCount()) {
+                case 1:
+                case 2:
+                case 4:
+                case 8:
+                    return ImageTypeSpecifiers.createFromIndexColorModel(readColorMap());
 
-            case 16:
-                if (header.hasMasks()) {
-                    return ImageTypeSpecifiers.createPacked(
-                            ColorSpace.getInstance(ColorSpace.CS_sRGB),
-                            header.masks[0], header.masks[1], header.masks[2], header.masks[3],
-                            DataBuffer.TYPE_USHORT, false
-                    );
-                }
+                case 16:
+                    if (header.hasMasks()) {
+                        return ImageTypeSpecifiers.createPacked(
+                                ColorSpace.getInstance(ColorSpace.CS_sRGB),
+                                header.masks[0], header.masks[1], header.masks[2], header.masks[3],
+                                DataBuffer.TYPE_USHORT, false
+                        );
+                    }
 
-                // Default if no mask is 555
-                return ImageTypeSpecifiers.createFromBufferedImageType(BufferedImage.TYPE_USHORT_555_RGB);
+                    // Default if no mask is 555
+                    return ImageTypeSpecifiers.createFromBufferedImageType(BufferedImage.TYPE_USHORT_555_RGB);
 
-            case 24:
-                if (header.getCompression() != DIB.COMPRESSION_RGB) {
-                    throw new IIOException("Unsupported compression for RGB: " + header.getCompression());
-                }
+                case 24:
+                    if (header.getCompression() != DIB.COMPRESSION_RGB) {
+                        throw new IIOException("Unsupported compression for RGB: " + header.getCompression());
+                    }
 
-                return ImageTypeSpecifiers.createFromBufferedImageType(BufferedImage.TYPE_3BYTE_BGR);
+                    return ImageTypeSpecifiers.createFromBufferedImageType(BufferedImage.TYPE_3BYTE_BGR);
 
-            case 32:
-                if (header.hasMasks()) {
-                    return ImageTypeSpecifiers.createPacked(
-                            ColorSpace.getInstance(ColorSpace.CS_sRGB),
-                            header.masks[0], header.masks[1], header.masks[2], header.masks[3],
-                            DataBuffer.TYPE_INT, false
-                    );
-                }
+                case 32:
+                    if (header.hasMasks()) {
+                        return ImageTypeSpecifiers.createPacked(
+                                ColorSpace.getInstance(ColorSpace.CS_sRGB),
+                                header.masks[0], header.masks[1], header.masks[2], header.masks[3],
+                                DataBuffer.TYPE_INT, false
+                        );
+                    }
 
-                // Default if no mask
-                return ImageTypeSpecifiers.createFromBufferedImageType(BufferedImage.TYPE_INT_RGB);
+                    // Default if no mask
+                    return ImageTypeSpecifiers.createFromBufferedImageType(BufferedImage.TYPE_INT_RGB);
 
-            case 0:
-                if (header.getCompression() == DIB.COMPRESSION_JPEG || header.getCompression() == DIB.COMPRESSION_PNG) {
-                    return initReaderDelegate(header.getCompression()).getRawImageType(0);
-                }
-            default:
-                throw new IIOException("Unsupported bit count: " + header.getBitCount());
+                case 0:
+                    if (header.getCompression() == DIB.COMPRESSION_JPEG || header.getCompression() == DIB.COMPRESSION_PNG) {
+                        return initReaderDelegate(header.getCompression()).getRawImageType(0);
+                    }
+                default:
+                    throw new IIOException("Unsupported bit count: " + header.getBitCount());
+            }
+        }
+        catch (IllegalArgumentException e) {
+            throw new IIOException(e.getMessage(), e);
         }
     }
 

imageio/imageio-bmp/src/main/java/com/twelvemonkeys/imageio/plugins/bmp/BitmapDescriptor.java

@@ -29,9 +29,10 @@
  */
 package com.twelvemonkeys.imageio.plugins.bmp;
 
-import com.twelvemonkeys.lang.Validate;
+import static com.twelvemonkeys.lang.Validate.notNull;
 
 import java.awt.image.BufferedImage;
+import java.io.IOException;
 
 /**
  * Describes a bitmap structure.
@@ -47,14 +48,11 @@ abstract class BitmapDescriptor {
     protected BitmapMask mask;
 
     public BitmapDescriptor(final DirectoryEntry pEntry, final DIBHeader pHeader) {
-        Validate.notNull(pEntry, "entry");
-        Validate.notNull(pHeader, "header");
-        
-        entry = pEntry;
-        header = pHeader;
+        entry = notNull(pEntry, "entry");;
+        header = notNull(pHeader, "header");
     }
 
-    abstract public BufferedImage getImage();
+    abstract public BufferedImage getImage() throws IOException;
 
     public final int getWidth() {
         return entry.getWidth();

imageio/imageio-bmp/src/main/java/com/twelvemonkeys/imageio/plugins/bmp/BitmapIndexed.java

@@ -163,6 +163,7 @@ class BitmapIndexed extends BitmapDescriptor {
         return transparent;
     }
 
+    @Override
     public BufferedImage getImage() {
         if (image == null) {
             image = createImageIndexed();

imageio/imageio-bmp/src/main/java/com/twelvemonkeys/imageio/plugins/bmp/BitmapRGB.java

@@ -46,6 +46,7 @@ class BitmapRGB extends BitmapDescriptor {
         super(pEntry, pHeader);
     }
 
+    @Override
     public BufferedImage getImage() {
         // Test is mask != null rather than hasMask(), as 32 bit (w/alpha)
         // might still have bitmask, but we don't read or use it.

imageio/imageio-bmp/src/main/java/com/twelvemonkeys/imageio/plugins/bmp/BitmapUnsupported.java

@@ -31,6 +31,9 @@
 package com.twelvemonkeys.imageio.plugins.bmp;
 
 import java.awt.image.BufferedImage;
+import java.io.IOException;
+
+import javax.imageio.IIOException;
 
 /**
  * Represents bitmap structures we can't read.
@@ -42,13 +45,14 @@ import java.awt.image.BufferedImage;
 class BitmapUnsupported extends BitmapDescriptor {
     private String message;
 
-    public BitmapUnsupported(final DirectoryEntry pEntry, final String pMessage) {
-        super(pEntry, null);
+    public BitmapUnsupported(final DirectoryEntry pEntry, DIBHeader header, final String pMessage) {
+        super(pEntry, header);
 
         message = pMessage;
     }
 
-    public BufferedImage getImage() {
-        throw new IllegalStateException(message);
+    @Override
+    public BufferedImage getImage() throws IOException {
+        throw new IIOException(message);
     }
 }

imageio/imageio-bmp/src/main/java/com/twelvemonkeys/imageio/plugins/bmp/DIBHeader.java

@@ -30,11 +30,12 @@
 
 package com.twelvemonkeys.imageio.plugins.bmp;
 
-import javax.imageio.IIOException;
 import java.io.DataInput;
 import java.io.DataOutput;
 import java.io.IOException;
 
+import javax.imageio.IIOException;
+
 /**
  * Represents the DIB (Device Independent Bitmap) Information header structure.
  *
@@ -213,7 +214,7 @@ abstract class DIBHeader {
 
             // NOTE: Unlike all other headers, width and height are unsigned SHORT values (16 bit)!
             width = pStream.readUnsignedShort();
-            height = pStream.readUnsignedShort();
+            height = pStream.readShort();
 
             if (height < 0) {
                 height = -height;
@@ -240,6 +241,7 @@ abstract class DIBHeader {
      * @see <a href="http://www.fileformat.info/format/os2bmp/egff.htm">OS/2 Bitmap File Format Summary</a>
      */
     static final class BitmapCoreHeaderV2 extends DIBHeader {
+        @SuppressWarnings("unused")
         protected void read(final int pSize, final DataInput pStream) throws IOException {
             if (pSize != DIB.OS2_V2_HEADER_SIZE && pSize != DIB.OS2_V2_HEADER_16_SIZE) {
                 throw new IIOException(String.format("Size: %s !=: %s", pSize, DIB.OS2_V2_HEADER_SIZE));

imageio/imageio-bmp/src/main/java/com/twelvemonkeys/imageio/plugins/bmp/DIBImageReader.java

@@ -30,16 +30,6 @@
 
 package com.twelvemonkeys.imageio.plugins.bmp;
 
-import com.twelvemonkeys.image.ImageUtil;
-import com.twelvemonkeys.imageio.ImageReaderBase;
-import com.twelvemonkeys.imageio.stream.SubImageInputStream;
-import com.twelvemonkeys.imageio.util.ImageTypeSpecifiers;
-import com.twelvemonkeys.util.WeakWeakMap;
-
-import javax.imageio.*;
-import javax.imageio.spi.ImageReaderSpi;
-import javax.imageio.stream.ImageInputStream;
-import javax.swing.*;
 import java.awt.*;
 import java.awt.color.ColorSpace;
 import java.awt.event.WindowAdapter;
@@ -48,8 +38,26 @@ import java.awt.image.*;
 import java.io.File;
 import java.io.IOException;
 import java.nio.ByteOrder;
+import java.util.ArrayList;
+import java.util.Iterator;
 import java.util.List;
-import java.util.*;
+import java.util.Map;
+import java.util.WeakHashMap;
+
+import javax.imageio.IIOException;
+import javax.imageio.ImageIO;
+import javax.imageio.ImageReadParam;
+import javax.imageio.ImageReader;
+import javax.imageio.ImageTypeSpecifier;
+import javax.imageio.spi.ImageReaderSpi;
+import javax.imageio.stream.ImageInputStream;
+import javax.swing.*;
+
+import com.twelvemonkeys.image.ImageUtil;
+import com.twelvemonkeys.imageio.ImageReaderBase;
+import com.twelvemonkeys.imageio.stream.SubImageInputStream;
+import com.twelvemonkeys.imageio.util.ImageTypeSpecifiers;
+import com.twelvemonkeys.util.WeakWeakMap;
 
 /**
  * ImageReader for Microsoft Windows ICO (icon) format.
@@ -287,7 +295,7 @@ abstract class DIBImageReader extends ImageReaderBase {
 
             // TODO: Support this, it's already in the BMP reader, spec allows RLE4 and RLE8
             if (header.getCompression() != DIB.COMPRESSION_RGB) {
-                descriptor = new BitmapUnsupported(pEntry, String.format("Unsupported compression: %d", header.getCompression()));
+                descriptor = new BitmapUnsupported(pEntry, header, String.format("Unsupported compression: %d", header.getCompression()));
             }
             else {
                 int bitCount = header.getBitCount();
@@ -315,7 +323,7 @@ abstract class DIBImageReader extends ImageReaderBase {
                         break;
 
                     default:
-                        descriptor = new BitmapUnsupported(pEntry, String.format("Unsupported bit count %d", bitCount));
+                        descriptor = new BitmapUnsupported(pEntry, header, String.format("Unsupported bit count %d", bitCount));
                 }
             }
 
@@ -355,7 +363,7 @@ abstract class DIBImageReader extends ImageReaderBase {
     }
 
     private void readBitmapIndexed1(final BitmapIndexed pBitmap, final boolean pAsMask) throws IOException {
-        int width = adjustToPadding(pBitmap.getWidth() >> 3);
+        int width = adjustToPadding((pBitmap.getWidth() + 7) >> 3);
         byte[] row = new byte[width];
 
         for (int y = 0; y < pBitmap.getHeight(); y++) {
@@ -389,7 +397,7 @@ abstract class DIBImageReader extends ImageReaderBase {
     }
 
     private void readBitmapIndexed4(final BitmapIndexed pBitmap) throws IOException {
-        int width = adjustToPadding(pBitmap.getWidth() >> 1);
+        int width = adjustToPadding((pBitmap.getWidth() + 1) >> 1);
         byte[] row = new byte[width];
 
         for (int y = 0; y < pBitmap.getHeight(); y++) {
@@ -457,13 +465,12 @@ abstract class DIBImageReader extends ImageReaderBase {
     }
 
     private void readBitmap16(final BitmapDescriptor pBitmap) throws IOException {
-        // TODO: No idea if this actually works..
         short[] pixels = new short[pBitmap.getWidth() * pBitmap.getHeight()];
 
         // TODO: Support TYPE_USHORT_565 and the RGB 444/ARGB 4444 layouts
         // Will create TYPE_USHORT_555
         DirectColorModel cm = new DirectColorModel(16, 0x7C00, 0x03E0, 0x001F);
-        DataBuffer buffer = new DataBufferShort(pixels, pixels.length);
+        DataBuffer buffer = new DataBufferUShort(pixels, pixels.length);
         WritableRaster raster = Raster.createPackedRaster(
                 buffer, pBitmap.getWidth(), pBitmap.getHeight(), pBitmap.getWidth(), cm.getMasks(), null
         );

imageio/imageio-bmp/src/main/java/com/twelvemonkeys/imageio/plugins/bmp/RLE4Decoder.java

@@ -41,8 +41,8 @@ import java.util.Arrays;
  * @version $Id: RLE4Decoder.java#1 $
  */
 final class RLE4Decoder extends AbstractRLEDecoder {
-    final static int BIT_MASKS[] = {0xf0, 0x0f};
-    final static int BIT_SHIFTS[] = {4, 0};
+    final static int[] BIT_MASKS = {0xf0, 0x0f};
+    final static int[] BIT_SHIFTS = {4, 0};
 
     public RLE4Decoder(final int width) {
         super(width, 4);
@@ -94,7 +94,7 @@ final class RLE4Decoder extends AbstractRLEDecoder {
                         boolean paddingByte = (((byte2 + 1) / 2) % 2) != 0;
 
                         int packed = 0;
-                        for (int i = 0; i < byte2; i++) {
+                        for (int i = 0; i < byte2 && srcX / 2 < row.length; i++) {
                             if (i % 2 == 0) {
                                 packed = checkEOF(stream.read());
                             }
@@ -111,7 +111,7 @@ final class RLE4Decoder extends AbstractRLEDecoder {
             else {
                 // Encoded mode
                 // Replicate the two samples in byte2 as many times as byte1 says
-                for (int i = 0; i < byte1; i++) {
+                for (int i = 0; i < byte1 && srcX / 2 < row.length; i++) {
                     row[srcX / 2] |= (byte) (((byte2 & BIT_MASKS[i % 2]) >> BIT_SHIFTS[i % 2]) << BIT_SHIFTS[srcX % 2]);
                     srcX++;
                 }

imageio/imageio-bmp/src/main/java/com/twelvemonkeys/imageio/plugins/bmp/RLE8Decoder.java

@@ -94,7 +94,7 @@ final class RLE8Decoder extends AbstractRLEDecoder {
                         // an additional padding byte is in the stream and must be skipped
                         boolean paddingByte = (byte2 % 2) != 0;
 
-                        while (byte2-- > 0) {
+                        while (byte2-- > 0 && srcX < row.length) {
                             row[srcX++] = (byte) checkEOF(stream.read());
                         }
 
@@ -107,7 +107,7 @@ final class RLE8Decoder extends AbstractRLEDecoder {
                 // Encoded mode
                 // Replicate byte2 as many times as byte1 says
                 byte value = (byte) byte2;
-                while (byte1-- > 0) {
+                while (byte1-- > 0  && srcX < row.length) {
                     row[srcX++] = value;
                 }
             }

imageio/imageio-bmp/src/test/java/com/twelvemonkeys/imageio/plugins/bmp/BMPImageReaderTest.java

@@ -30,35 +30,43 @@
 
 package com.twelvemonkeys.imageio.plugins.bmp;
 
-import com.twelvemonkeys.imageio.util.ImageReaderAbstractTest;
-import com.twelvemonkeys.xml.XMLSerializer;
+import static org.junit.Assert.*;
+import static org.junit.Assume.assumeNoException;
+import static org.mockito.Matchers.anyInt;
+import static org.mockito.Matchers.eq;
+import static org.mockito.Mockito.atLeastOnce;
+import static org.mockito.Mockito.inOrder;
+import static org.mockito.Mockito.mock;
+
+import java.awt.*;
+import java.awt.image.BufferedImage;
+import java.io.ByteArrayOutputStream;
+import java.io.IOException;
+import java.lang.reflect.Constructor;
+import java.nio.charset.StandardCharsets;
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.Iterator;
+import java.util.List;
+
+import javax.imageio.IIOException;
+import javax.imageio.ImageIO;
+import javax.imageio.ImageReadParam;
+import javax.imageio.ImageReader;
+import javax.imageio.ImageTypeSpecifier;
+import javax.imageio.event.IIOReadProgressListener;
+import javax.imageio.metadata.IIOMetadata;
+import javax.imageio.metadata.IIOMetadataNode;
+import javax.imageio.spi.ImageReaderSpi;
+
 import org.junit.Ignore;
 import org.junit.Test;
 import org.mockito.InOrder;
 import org.w3c.dom.Node;
 import org.w3c.dom.NodeList;
 
-import javax.imageio.*;
-import javax.imageio.event.IIOReadProgressListener;
-import javax.imageio.metadata.IIOMetadata;
-import javax.imageio.metadata.IIOMetadataNode;
-import javax.imageio.spi.ImageReaderSpi;
-import java.awt.*;
-import java.awt.image.BufferedImage;
-import java.io.ByteArrayOutputStream;
-import java.io.IOException;
-import java.lang.reflect.Constructor;
-import java.net.URISyntaxException;
-import java.util.Arrays;
-import java.util.Collections;
-import java.util.Iterator;
-import java.util.List;
-
-import static org.junit.Assert.*;
-import static org.junit.Assume.assumeNoException;
-import static org.mockito.Matchers.anyInt;
-import static org.mockito.Matchers.eq;
-import static org.mockito.Mockito.*;
+import com.twelvemonkeys.imageio.util.ImageReaderAbstractTest;
+import com.twelvemonkeys.xml.XMLSerializer;
 
 /**
  * BMPImageReaderTest
@@ -68,6 +76,12 @@ import static org.mockito.Mockito.*;
  * @version $Id: BMPImageReaderTest.java,v 1.0 Apr 1, 2008 10:39:17 PM haraldk Exp$
  */
 public class BMPImageReaderTest extends ImageReaderAbstractTest<BMPImageReader> {
+    @Override
+    protected ImageReaderSpi createProvider() {
+        return new BMPImageReaderSpi();
+    }
+
+    @Override
     protected List<TestData> getTestData() {
         return Arrays.asList(
                 // BMP Suite "Good"
@@ -144,27 +158,17 @@ public class BMPImageReaderTest extends ImageReaderAbstractTest<BMPImageReader>
         );
     }
 
-    protected ImageReaderSpi createProvider() {
-        return new BMPImageReaderSpi();
-    }
-
     @Override
-    protected BMPImageReader createReader() {
-        return new BMPImageReader(createProvider());
-    }
-
-    protected Class<BMPImageReader> getReaderClass() {
-        return BMPImageReader.class;
-    }
-
     protected List<String> getFormatNames() {
         return Collections.singletonList("bmp");
     }
 
+    @Override
     protected List<String> getSuffixes() {
         return Arrays.asList("bmp", "rle");
     }
 
+    @Override
     protected List<String> getMIMETypes() {
         return Collections.singletonList("image/bmp");
     }
@@ -178,7 +182,7 @@ public class BMPImageReaderTest extends ImageReaderAbstractTest<BMPImageReader>
 
             ImageTypeSpecifier rawType = reader.getRawImageType(0);
 
-            // As the JPEGImageReader we delegate to returns null for YCbCr, we'll have to do the same
+            // As the JPEGImageReader we delegate to may return null for YCbCr, we'll have to do the same
             if (rawType == null && data.getInput().toString().contains("jpeg")) {
                 continue;
             }
@@ -273,7 +277,7 @@ public class BMPImageReaderTest extends ImageReaderAbstractTest<BMPImageReader>
     }
 
     @Test
-    public void testAddIIOReadProgressListenerCallbacksJPEG() {
+    public void testAddIIOReadProgressListenerCallbacksJPEG() throws IOException {
         ImageReader reader = createReader();
         TestData data = new TestData(getClassLoaderResource("/bmpsuite/q/rgb24jpeg.bmp"), new Dimension(127, 64));
         reader.setInput(data.getInputStream());
@@ -296,7 +300,7 @@ public class BMPImageReaderTest extends ImageReaderAbstractTest<BMPImageReader>
     }
 
     @Test
-    public void testAddIIOReadProgressListenerCallbacksPNG() {
+    public void testAddIIOReadProgressListenerCallbacksPNG() throws IOException {
         ImageReader reader = createReader();
         TestData data = new TestData(getClassLoaderResource("/bmpsuite/q/rgb24png.bmp"), new Dimension(127, 64));
         reader.setInput(data.getInputStream());
@@ -319,7 +323,7 @@ public class BMPImageReaderTest extends ImageReaderAbstractTest<BMPImageReader>
     }
 
     @Test
-    public void testMetadataEqualsJRE() throws IOException, URISyntaxException {
+    public void testMetadataEqualsJRE() throws IOException {
         ImageReader jreReader;
         try {
             @SuppressWarnings("unchecked")
@@ -356,7 +360,7 @@ public class BMPImageReaderTest extends ImageReaderAbstractTest<BMPImageReader>
             }
             IIOMetadata jreMetadata = jreReader.getImageMetadata(0);
 
-            assertEquals(true, metadata.isStandardMetadataFormatSupported());
+            assertTrue(metadata.isStandardMetadataFormatSupported());
             assertEquals(jreMetadata.getNativeMetadataFormatName(), metadata.getNativeMetadataFormatName());
             assertArrayEquals(jreMetadata.getExtraMetadataFormatNames(), metadata.getExtraMetadataFormatNames());
 
@@ -379,7 +383,7 @@ public class BMPImageReaderTest extends ImageReaderAbstractTest<BMPImageReader>
                     new XMLSerializer(expected, "UTF-8").serialize(expectedTree, false);
                     new XMLSerializer(actual, "UTF-8").serialize(actualTree, false);
 
-                    assertEquals(e.getMessage(), new String(expected.toByteArray(), "UTF-8"), new String(actual.toByteArray(), "UTF-8"));
+                    assertEquals(e.getMessage(), new String(expected.toByteArray(), StandardCharsets.UTF_8), new String(actual.toByteArray(), StandardCharsets.UTF_8));
 
                     throw e;
                 }

imageio/imageio-bmp/src/test/java/com/twelvemonkeys/imageio/plugins/bmp/BMPImageWriterTest.java

@@ -2,10 +2,10 @@ package com.twelvemonkeys.imageio.plugins.bmp;
 
 import com.twelvemonkeys.imageio.util.ImageWriterAbstractTest;
 
-import javax.imageio.ImageWriter;
+import javax.imageio.spi.ImageWriterSpi;
 import java.awt.image.BufferedImage;
 import java.awt.image.RenderedImage;
-import java.util.Arrays;
+import java.util.Collections;
 import java.util.List;
 
 /**
@@ -15,18 +15,15 @@ import java.util.List;
  * @author last modified by : harald.kuhr$
  * @version : BMPImageWriterTest.java,v 1.0 25/06/2020 harald.kuhr Exp$
  */
-public class BMPImageWriterTest extends ImageWriterAbstractTest {
-
-    private final BMPImageWriterSpi provider = new BMPImageWriterSpi();
-
+public class BMPImageWriterTest extends ImageWriterAbstractTest<BMPImageWriter> {
     @Override
-    protected ImageWriter createImageWriter() {
-        return provider.createWriterInstance(null);
+    protected ImageWriterSpi createProvider() {
+        return new BMPImageWriterSpi();
     }
 
     @Override
     protected List<? extends RenderedImage> getTestData() {
-        return Arrays.asList(
+        return Collections.singletonList(
                 new BufferedImage(10, 10, BufferedImage.TYPE_4BYTE_ABGR)
         );
     }

imageio/imageio-bmp/src/test/java/com/twelvemonkeys/imageio/plugins/bmp/CURImageReaderTest.java

@@ -31,6 +31,7 @@
 package com.twelvemonkeys.imageio.plugins.bmp;
 
 import com.twelvemonkeys.imageio.util.ImageReaderAbstractTest;
+
 import org.junit.Ignore;
 import org.junit.Test;
 
@@ -53,6 +54,12 @@ import static org.junit.Assert.*;
  * @version $Id: CURImageReaderTest.java,v 1.0 Apr 1, 2008 10:39:17 PM haraldk Exp$
  */
 public class CURImageReaderTest extends ImageReaderAbstractTest<CURImageReader> {
+    @Override
+    protected ImageReaderSpi createProvider() {
+        return new CURImageReaderSpi();
+    }
+
+    @Override
     protected List<TestData> getTestData() {
         return Arrays.asList(
                 new TestData(getClassLoaderResource("/cur/hand.cur"), new Dimension(32, 32)),
@@ -60,27 +67,17 @@ public class CURImageReaderTest extends ImageReaderAbstractTest<CURImageReader>
         );
     }
 
-    protected ImageReaderSpi createProvider() {
-        return new CURImageReaderSpi();
-    }
-
     @Override
-    protected CURImageReader createReader() {
-        return new CURImageReader();
-    }
-
-    protected Class<CURImageReader> getReaderClass() {
-        return CURImageReader.class;
-    }
-
     protected List<String> getFormatNames() {
         return Collections.singletonList("cur");
     }
 
+    @Override
     protected List<String> getSuffixes() {
         return Collections.singletonList("cur");
     }
 
+    @Override
     protected List<String> getMIMETypes() {
         return Arrays.asList("image/vnd.microsoft.cursor", "image/cursor", "image/x-cursor");
     }
@@ -99,7 +96,7 @@ public class CURImageReaderTest extends ImageReaderAbstractTest<CURImageReader>
             assertNotNull("Hotspot for cursor not present", hotspot);
 
             // Image weirdness
-            assertTrue("Hotspot for cursor undefined (java.awt.Image.UndefinedProperty)", Image.UndefinedProperty != hotspot);
+            assertNotSame("Hotspot for cursor undefined (java.awt.Image.UndefinedProperty)", Image.UndefinedProperty, hotspot);
 
             assertTrue(String.format("Hotspot not a java.awt.Point: %s", hotspot.getClass()), hotspot instanceof Point);
             assertEquals(pExpected, hotspot);

imageio/imageio-bmp/src/test/java/com/twelvemonkeys/imageio/plugins/bmp/ICOImageReaderTest.java

@@ -31,6 +31,7 @@
 package com.twelvemonkeys.imageio.plugins.bmp;
 
 import com.twelvemonkeys.imageio.util.ImageReaderAbstractTest;
+
 import org.junit.Ignore;
 import org.junit.Test;
 
@@ -49,6 +50,12 @@ import java.util.List;
  * @version $Id: ICOImageReaderTest.java,v 1.0 Apr 1, 2008 10:39:17 PM haraldk Exp$
  */
 public class ICOImageReaderTest extends ImageReaderAbstractTest<ICOImageReader> {
+    @Override
+    protected ImageReaderSpi createProvider() {
+        return new ICOImageReaderSpi();
+    }
+
+    @Override
     protected List<TestData> getTestData() {
         return Arrays.asList(
                 new TestData(
@@ -75,27 +82,17 @@ public class ICOImageReaderTest extends ImageReaderAbstractTest<ICOImageReader>
         );
     }
 
-    protected ImageReaderSpi createProvider() {
-        return new ICOImageReaderSpi();
-    }
-
     @Override
-    protected ICOImageReader createReader() {
-        return new ICOImageReader();
-    }
-
-    protected Class<ICOImageReader> getReaderClass() {
-        return ICOImageReader.class;
-    }
-
     protected List<String> getFormatNames() {
         return Collections.singletonList("ico");
     }
 
+    @Override
     protected List<String> getSuffixes() {
         return Collections.singletonList("ico");
     }
 
+    @Override
     protected List<String> getMIMETypes() {
         return Arrays.asList("image/vnd.microsoft.icon", "image/ico", "image/x-icon");
     }

imageio/imageio-bmp/src/test/java/com/twelvemonkeys/imageio/plugins/bmp/ICOImageWriterTest.java

@@ -2,7 +2,7 @@ package com.twelvemonkeys.imageio.plugins.bmp;
 
 import com.twelvemonkeys.imageio.util.ImageWriterAbstractTest;
 
-import javax.imageio.ImageWriter;
+import javax.imageio.spi.ImageWriterSpi;
 import java.awt.image.BufferedImage;
 import java.awt.image.RenderedImage;
 import java.util.Arrays;
@@ -15,12 +15,10 @@ import java.util.List;
  * @author last modified by : harald.kuhr$
  * @version : ICOImageWriterTest.java,v 1.0 25/06/2020 harald.kuhr Exp$
  */
-public class ICOImageWriterTest extends ImageWriterAbstractTest {
-    private final ICOImageWriterSpi provider = new ICOImageWriterSpi();
-
+public class ICOImageWriterTest extends ImageWriterAbstractTest<ICOImageWriter> {
     @Override
-    protected ImageWriter createImageWriter() {
-        return provider.createWriterInstance(null);
+    protected ImageWriterSpi createProvider() {
+        return new ICOImageWriterSpi();
     }
 
     @Override

imageio/imageio-clippath/pom.xml

@@ -4,7 +4,7 @@
     <parent>
         <groupId>com.twelvemonkeys.imageio</groupId>
         <artifactId>imageio</artifactId>
-        <version>3.6</version>
+        <version>3.6.2</version>
     </parent>
     <artifactId>imageio-clippath</artifactId>
     <name>TwelveMonkeys :: ImageIO :: Photoshop Path Support</name>
@@ -21,6 +21,7 @@
             <groupId>com.twelvemonkeys.imageio</groupId>
             <artifactId>imageio-core</artifactId>
             <type>test-jar</type>
+            <scope>test</scope>
         </dependency>
         <dependency>
             <groupId>com.twelvemonkeys.imageio</groupId>

imageio/imageio-core/pom.xml

@@ -4,7 +4,7 @@
     <parent>
         <groupId>com.twelvemonkeys.imageio</groupId>
         <artifactId>imageio</artifactId>
-        <version>3.6</version>
+        <version>3.6.2</version>
     </parent>
     <artifactId>imageio-core</artifactId>
     <name>TwelveMonkeys :: ImageIO :: Core</name>

imageio/imageio-core/src/main/java/com/twelvemonkeys/imageio/ImageReaderBase.java

@@ -30,20 +30,16 @@
 
 package com.twelvemonkeys.imageio;
 
-import com.twelvemonkeys.image.BufferedImageIcon;
-import com.twelvemonkeys.image.ImageUtil;
-import com.twelvemonkeys.imageio.util.IIOUtil;
-
-import javax.imageio.*;
-import javax.imageio.metadata.IIOMetadata;
-import javax.imageio.spi.ImageReaderSpi;
-import javax.imageio.stream.ImageInputStream;
-import javax.swing.*;
 import java.awt.*;
 import java.awt.datatransfer.DataFlavor;
 import java.awt.datatransfer.Transferable;
 import java.awt.datatransfer.UnsupportedFlavorException;
-import java.awt.event.*;
+import java.awt.event.ActionEvent;
+import java.awt.event.KeyEvent;
+import java.awt.event.MouseAdapter;
+import java.awt.event.MouseEvent;
+import java.awt.event.WindowAdapter;
+import java.awt.event.WindowEvent;
 import java.awt.image.BufferedImage;
 import java.awt.image.IndexColorModel;
 import java.io.File;
@@ -52,6 +48,20 @@ import java.lang.reflect.InvocationTargetException;
 import java.util.Arrays;
 import java.util.Iterator;
 
+import javax.imageio.IIOException;
+import javax.imageio.ImageIO;
+import javax.imageio.ImageReadParam;
+import javax.imageio.ImageReader;
+import javax.imageio.ImageTypeSpecifier;
+import javax.imageio.metadata.IIOMetadata;
+import javax.imageio.spi.ImageReaderSpi;
+import javax.imageio.stream.ImageInputStream;
+import javax.swing.*;
+
+import com.twelvemonkeys.image.BufferedImageIcon;
+import com.twelvemonkeys.image.ImageUtil;
+import com.twelvemonkeys.imageio.util.IIOUtil;
+
 /**
  * Abstract base class for image readers.
  *
@@ -314,12 +324,12 @@ public abstract class ImageReaderBase extends ImageReader {
 
         long dimension = (long) destWidth * destHeight;
         if (dimension > Integer.MAX_VALUE) {
-            throw new IllegalArgumentException(String.format("destination width * height > Integer.MAX_VALUE: %d", dimension));
+            throw new IIOException(String.format("destination width * height > Integer.MAX_VALUE: %d", dimension));
         }
 
         long size = dimension * imageType.getSampleModel().getNumDataElements();
         if (size > Integer.MAX_VALUE) {
-            throw new IllegalArgumentException(String.format("destination width * height * samplesPerPixel > Integer.MAX_VALUE: %d", size));
+            throw new IIOException(String.format("destination width * height * samplesPerPixel > Integer.MAX_VALUE: %d", size));
         }
 
         // Create a new image based on the type specifier

imageio/imageio-core/src/main/java/com/twelvemonkeys/imageio/stream/BufferedImageInputStream.java

@@ -57,8 +57,10 @@ public final class BufferedImageInputStream extends ImageInputStreamImpl impleme
 
     private ImageInputStream stream;
 
-    private ByteBuffer buffer;
-    private ByteBuffer integralCache = ByteBuffer.allocate(8);
+    private  ByteBuffer buffer;
+
+    private final ByteBuffer integralCache = ByteBuffer.allocate(8);
+    private final byte[] integralCacheArray = integralCache.array();
 
     public BufferedImageInputStream(final ImageInputStream pStream) throws IOException {
         this(pStream, DEFAULT_BUFFER_SIZE);
@@ -97,10 +99,10 @@ public final class BufferedImageInputStream extends ImageInputStreamImpl impleme
 
         if (!buffer.hasRemaining()) {
             fillBuffer();
-        }
 
-        if (!buffer.hasRemaining()) {
-            return -1;
+            if (!buffer.hasRemaining()) {
+                return -1;
+            }
         }
 
         bitOffset = 0;
@@ -172,21 +174,21 @@ public final class BufferedImageInputStream extends ImageInputStreamImpl impleme
 
     @Override
     public short readShort() throws IOException {
-        readFully(integralCache.array(), 0, 2);
+        readFully(integralCacheArray, 0, 2);
 
         return integralCache.getShort(0);
     }
 
     @Override
     public int readInt() throws IOException {
-        readFully(integralCache.array(), 0, 4);
+        readFully(integralCacheArray, 0, 4);
 
         return integralCache.getInt(0);
     }
 
     @Override
     public long readLong() throws IOException {
-        readFully(integralCache.array(), 0, 8);
+        readFully(integralCacheArray, 0, 8);
 
         return integralCache.getLong(0);
     }
@@ -253,6 +255,7 @@ public final class BufferedImageInputStream extends ImageInputStreamImpl impleme
             }
 
             int val = buffer.get() & 0xff;
+            streamPos++;
 
             accum <<= 8;
             accum |= val;
@@ -262,9 +265,7 @@ public final class BufferedImageInputStream extends ImageInputStreamImpl impleme
         // Move byte position back if in the middle of a byte
         if (newBitOffset != 0) {
             buffer.position(buffer.position() - 1);
-        }
-        else {
-            streamPos++;
+            streamPos--;
         }
 
         this.bitOffset = newBitOffset;
@@ -279,26 +280,26 @@ public final class BufferedImageInputStream extends ImageInputStreamImpl impleme
     }
 
     @Override
-    public void seek(long pPosition) throws IOException {
+    public void seek(long position) throws IOException {
         checkClosed();
         bitOffset = 0;
 
-        if (streamPos == pPosition) {
+        if (streamPos == position) {
             return;
         }
 
         // Optimized to not invalidate buffer if new position is within current buffer
-        long newBufferPos = buffer.position() + pPosition - streamPos;
+        long newBufferPos = buffer.position() + position - streamPos;
         if (newBufferPos >= 0 && newBufferPos <= buffer.limit()) {
             buffer.position((int) newBufferPos);
         }
         else {
             // Will invalidate buffer
             buffer.limit(0);
-            stream.seek(pPosition);
+            stream.seek(position);
         }
 
-        streamPos = pPosition;
+        streamPos = position;
     }
 
     @Override
@@ -330,7 +331,9 @@ public final class BufferedImageInputStream extends ImageInputStreamImpl impleme
     @Override
     public void close() throws IOException {
         if (stream != null) {
-            //stream.close();
+            // TODO: FixMe: Need to close underlying stream here!
+            //   For call sites that relies on not closing, we should instead not close the buffered stream.
+//             stream.close();
             stream = null;
             buffer = null;
         }

imageio/imageio-core/src/main/java/com/twelvemonkeys/imageio/stream/ByteArrayImageInputStreamSpi.java

@@ -30,10 +30,11 @@
 
 package com.twelvemonkeys.imageio.stream;
 
+import com.twelvemonkeys.imageio.spi.ProviderInfo;
+
 import javax.imageio.spi.ImageInputStreamSpi;
 import javax.imageio.stream.ImageInputStream;
 import java.io.File;
-import java.io.IOException;
 import java.util.Locale;
 
 /**
@@ -47,10 +48,14 @@ import java.util.Locale;
 public class ByteArrayImageInputStreamSpi extends ImageInputStreamSpi {
 
     public ByteArrayImageInputStreamSpi() {
-        super("TwelveMonkeys", "1.0 BETA", byte[].class);
+        this(new StreamProviderInfo());
     }
 
-    public ImageInputStream createInputStreamInstance(Object pInput, boolean pUseCache, File pCacheDir) throws IOException {
+    private ByteArrayImageInputStreamSpi(ProviderInfo providerInfo) {
+        super(providerInfo.getVendorName(), providerInfo.getVersion(), byte[].class);
+    }
+
+    public ImageInputStream createInputStreamInstance(Object pInput, boolean pUseCache, File pCacheDir) {
         if (pInput instanceof byte[]) {
             return new ByteArrayImageInputStream((byte[]) pInput);
         }

imageio/imageio-core/src/main/java/com/twelvemonkeys/imageio/stream/StreamProviderInfo.java

@@ -0,0 +1,9 @@
+package com.twelvemonkeys.imageio.stream;
+
+import com.twelvemonkeys.imageio.spi.ProviderInfo;
+
+final class StreamProviderInfo extends ProviderInfo {
+    StreamProviderInfo() {
+        super(StreamProviderInfo.class.getPackage());
+    }
+}

imageio/imageio-core/src/main/java/com/twelvemonkeys/imageio/stream/URLImageInputStreamSpi.java

@@ -30,6 +30,8 @@
 
 package com.twelvemonkeys.imageio.stream;
 
+import com.twelvemonkeys.imageio.spi.ProviderInfo;
+
 import javax.imageio.spi.ImageInputStreamSpi;
 import javax.imageio.stream.FileCacheImageInputStream;
 import javax.imageio.stream.FileImageInputStream;
@@ -53,7 +55,11 @@ import java.util.Locale;
  // TODO: URI instead of URL?
 public class URLImageInputStreamSpi extends ImageInputStreamSpi {
     public URLImageInputStreamSpi() {
-        super("TwelveMonkeys", "1.0 BETA", URL.class);
+        this(new StreamProviderInfo());
+    }
+
+    private URLImageInputStreamSpi(ProviderInfo providerInfo) {
+        super(providerInfo.getVendorName(), providerInfo.getVersion(), URL.class);
     }
 
     // TODO: Create a URI or URLImageInputStream class, with a getUR[I|L] method, to allow for multiple file formats
@@ -108,6 +114,11 @@ public class URLImageInputStreamSpi extends ImageInputStreamSpi {
         }
     }
 
+    @Override
+    public boolean canUseCacheFile() {
+        return true;
+    }
+
     public String getDescription(final Locale pLocale) {
         return "Service provider that instantiates an ImageInputStream from a URL";
     }

imageio/imageio-core/src/main/java/com/twelvemonkeys/imageio/util/IIOUtil.java

@@ -291,4 +291,21 @@ public final class IIOUtil {
             System.arraycopy(srcRow, srcPos + x, destRow, destPos + x / samplePeriod, pixelStride);
         }
     }
+
+    public static void subsampleRow(float[] srcRow, int srcPos, int srcWidth,
+                                    float[] destRow, int destPos,
+                                    int samplesPerPixel, int bitsPerSample, int samplePeriod) {
+        Validate.isTrue(samplePeriod > 1, "samplePeriod must be > 1"); // Period == 1 could be a no-op...
+        Validate.isTrue(bitsPerSample > 0 && bitsPerSample <= 32 && (bitsPerSample == 1 || bitsPerSample % 2 == 0),
+                "bitsPerSample must be > 0 and <= 32 and a power of 2");
+        Validate.isTrue(samplesPerPixel > 0, "samplesPerPixel must be > 0");
+        Validate.isTrue(samplesPerPixel * bitsPerSample <= 32 || samplesPerPixel * bitsPerSample % 32 == 0,
+                "samplesPerPixel * bitsPerSample must be < 32 or a multiple of 32 ");
+
+        int pixelStride = bitsPerSample * samplesPerPixel / 32;
+        for (int x = 0; x < srcWidth * pixelStride; x += samplePeriod * pixelStride) {
+            // System.arraycopy should be intrinsic, but consider using direct array access for pixelStride == 1
+            System.arraycopy(srcRow, srcPos + x, destRow, destPos + x / samplePeriod, pixelStride);
+        }
+    }
 }

imageio/imageio-core/src/test/java/com/twelvemonkeys/imageio/ImageReaderBaseTest.java

@@ -30,11 +30,11 @@
 
 package com.twelvemonkeys.imageio;
 
-import org.junit.Test;
+import static java.util.Collections.singleton;
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertTrue;
 
-import javax.imageio.IIOException;
-import javax.imageio.ImageReadParam;
-import javax.imageio.ImageTypeSpecifier;
 import java.awt.*;
 import java.awt.color.ColorSpace;
 import java.awt.image.BufferedImage;
@@ -44,8 +44,11 @@ import java.util.Collections;
 import java.util.List;
 import java.util.Set;
 
-import static java.util.Collections.singleton;
-import static org.junit.Assert.*;
+import javax.imageio.IIOException;
+import javax.imageio.ImageReadParam;
+import javax.imageio.ImageTypeSpecifier;
+
+import org.junit.Test;
 
 /**
  * ImageReaderBaseTest
@@ -212,19 +215,19 @@ public class ImageReaderBaseTest {
         assertEquals(TYPES.get(0).getBufferedImageType(), destination.getType());
     }
 
-    @Test(expected = IllegalArgumentException.class)
+    @Test(expected = IIOException.class)
     public void testGetDestinationParamDestinationExceedsIntegerMax() throws IIOException {
         ImageReadParam param = new ImageReadParam();
         param.setSourceRegion(new Rectangle(3 * Short.MAX_VALUE, 2 * Short.MAX_VALUE)); // 6 442 057 734 pixels
         ImageReaderBase.getDestination(param, TYPES.iterator(), 6 * Short.MAX_VALUE, 4 * Short.MAX_VALUE); // 25 768 230 936 pixels
     }
 
-    @Test(expected = IllegalArgumentException.class)
+    @Test(expected = IIOException.class)
     public void testGetDestinationDimensionExceedsIntegerMax() throws IIOException {
         ImageReaderBase.getDestination(null, TYPES.iterator(), 3 * Short.MAX_VALUE, 2 * Short.MAX_VALUE); // 6 442 057 734 pixels
     }
 
-    @Test(expected = IllegalArgumentException.class)
+    @Test(expected = IIOException.class)
     public void testGetDestinationStorageExceedsIntegerMax() throws IIOException {
         Set<ImageTypeSpecifier> byteTypes = singleton(ImageTypeSpecifier.createFromBufferedImageType(BufferedImage.TYPE_3BYTE_BGR));
         ImageReaderBase.getDestination(null, byteTypes.iterator(), Short.MAX_VALUE,  Short.MAX_VALUE); // 1 073 676 289 pixels

imageio/imageio-core/src/test/java/com/twelvemonkeys/imageio/color/DiscreteAlphaIndexColorModelTest.java

@@ -35,6 +35,8 @@ import org.junit.Test;
 
 import java.awt.image.*;
 
+import static org.hamcrest.CoreMatchers.instanceOf;
+import static org.hamcrest.MatcherAssert.assertThat;
 import static org.junit.Assert.*;
 
 public class DiscreteAlphaIndexColorModelTest {
@@ -162,7 +164,7 @@ public class DiscreteAlphaIndexColorModelTest {
         assertEquals(2, sampleModel.getHeight());
 
         assertTrue(colorModel.isCompatibleSampleModel(sampleModel));
-        assertThat(sampleModel, CoreMatchers.is(PixelInterleavedSampleModel.class));
+        assertThat(sampleModel, instanceOf(PixelInterleavedSampleModel.class));
         assertThat(sampleModel.getDataType(), CoreMatchers.equalTo(DataBuffer.TYPE_BYTE));
     }
 
@@ -180,7 +182,7 @@ public class DiscreteAlphaIndexColorModelTest {
         assertEquals(2, sampleModel.getHeight());
 
         assertTrue(colorModel.isCompatibleSampleModel(sampleModel));
-        assertThat(sampleModel, CoreMatchers.is(PixelInterleavedSampleModel.class));
+        assertThat(sampleModel, instanceOf(PixelInterleavedSampleModel.class));
         assertThat(sampleModel.getDataType(), CoreMatchers.equalTo(DataBuffer.TYPE_USHORT));
     }
 

imageio/imageio-core/src/test/java/com/twelvemonkeys/imageio/spi/ProviderInfoTest.java

@@ -45,7 +45,7 @@ import static org.junit.Assert.*;
  */
 public class ProviderInfoTest {
     @Test
-    public void testCreateNorma() {
+    public void testCreateNormal() {
         new ProviderInfo(Package.getPackage("java.util"));
     }
 

imageio/imageio-core/src/test/java/com/twelvemonkeys/imageio/spi/ReaderWriterProviderInfoTest.java

@@ -31,8 +31,8 @@
 package com.twelvemonkeys.imageio.spi;
 
 import org.hamcrest.Description;
+import org.hamcrest.TypeSafeMatcher;
 import org.junit.Test;
-import org.junit.internal.matchers.TypeSafeMatcher;
 
 import javax.imageio.ImageReader;
 import javax.imageio.ImageWriter;
@@ -42,6 +42,7 @@ import javax.imageio.spi.ImageWriterSpi;
 import java.util.List;
 
 import static java.util.Arrays.asList;
+import static org.hamcrest.MatcherAssert.assertThat;
 import static org.junit.Assert.*;
 
 /**
@@ -62,52 +63,52 @@ public abstract class ReaderWriterProviderInfoTest {
     }
 
     @Test
-    public void readerClassName() throws Exception {
+    public void readerClassName() {
         assertClassExists(providerInfo.readerClassName(), ImageReader.class);
     }
 
     @Test
-    public void readerSpiClassNames() throws Exception {
+    public void readerSpiClassNames() {
         assertClassesExist(providerInfo.readerSpiClassNames(), ImageReaderSpi.class);
     }
 
     @Test
-    public void inputTypes() throws Exception {
+    public void inputTypes() {
         assertNotNull(providerInfo.inputTypes());
     }
 
     @Test
-    public void writerClassName() throws Exception {
+    public void writerClassName() {
         assertClassExists(providerInfo.writerClassName(), ImageWriter.class);
     }
 
     @Test
-    public void writerSpiClassNames() throws Exception {
+    public void writerSpiClassNames() {
         assertClassesExist(providerInfo.writerSpiClassNames(), ImageWriterSpi.class);
     }
 
     @Test
-    public void outputTypes() throws Exception {
+    public void outputTypes() {
         assertNotNull(providerInfo.outputTypes());
     }
 
     @Test
-    public void nativeStreamMetadataFormatClassName() throws Exception {
+    public void nativeStreamMetadataFormatClassName() {
         assertClassExists(providerInfo.nativeStreamMetadataFormatClassName(), IIOMetadataFormat.class);
     }
 
     @Test
-    public void extraStreamMetadataFormatClassNames() throws Exception {
+    public void extraStreamMetadataFormatClassNames() {
         assertClassesExist(providerInfo.extraStreamMetadataFormatClassNames(), IIOMetadataFormat.class);
     }
 
     @Test
-    public void nativeImageMetadataFormatClassName() throws Exception {
+    public void nativeImageMetadataFormatClassName() {
         assertClassExists(providerInfo.nativeImageMetadataFormatClassName(), IIOMetadataFormat.class);
     }
 
     @Test
-    public void extraImageMetadataFormatClassNames() throws Exception {
+    public void extraImageMetadataFormatClassNames() {
         assertClassesExist(providerInfo.extraImageMetadataFormatClassNames(), IIOMetadataFormat.class);
     }
 
@@ -115,7 +116,7 @@ public abstract class ReaderWriterProviderInfoTest {
     public void formatNames() {
         String[] names = providerInfo.formatNames();
         assertNotNull(names);
-        assertFalse(names.length == 0);
+        assertNotEquals(0, names.length);
 
         List<String> list = asList(names);
 
@@ -132,7 +133,7 @@ public abstract class ReaderWriterProviderInfoTest {
     public void suffixes() {
         String[] suffixes = providerInfo.suffixes();
         assertNotNull(suffixes);
-        assertFalse(suffixes.length == 0);
+        assertNotEquals(0, suffixes.length);
 
         for (String suffix : suffixes) {
             assertNotNull(suffix);
@@ -144,7 +145,7 @@ public abstract class ReaderWriterProviderInfoTest {
     public void mimeTypes() {
         String[] mimeTypes = providerInfo.mimeTypes();
         assertNotNull(mimeTypes);
-        assertFalse(mimeTypes.length == 0);
+        assertNotEquals(0, mimeTypes.length);
 
         for (String mimeType : mimeTypes) {
             assertNotNull(mimeType);

imageio/imageio-core/src/test/java/com/twelvemonkeys/imageio/stream/BufferedImageInputStreamTest.java

@@ -32,16 +32,19 @@ package com.twelvemonkeys.imageio.stream;
 
 import com.twelvemonkeys.io.ole2.CompoundDocument;
 import com.twelvemonkeys.io.ole2.Entry;
+
 import org.junit.Test;
 
 import javax.imageio.stream.ImageInputStream;
 import javax.imageio.stream.MemoryCacheImageInputStream;
 import java.io.IOException;
+import java.nio.ByteBuffer;
 import java.nio.ByteOrder;
 import java.util.Random;
 
 import static java.util.Arrays.fill;
 import static org.junit.Assert.*;
+import static org.mockito.Mockito.*;
 
 /**
  * BufferedImageInputStreamTest
@@ -72,6 +75,257 @@ public class BufferedImageInputStreamTest {
         }
     }
 
+    @Test
+    public void testReadBit() throws IOException {
+        byte[] bytes = new byte[] {(byte) 0xF0, (byte) 0x0F};
+
+        // Create wrapper stream
+        BufferedImageInputStream stream = new BufferedImageInputStream(new ByteArrayImageInputStream(bytes));
+
+        // Read all bits
+        assertEquals(1, stream.readBit());
+        assertEquals(1, stream.getBitOffset());
+        assertEquals(0, stream.getStreamPosition());
+
+        assertEquals(1, stream.readBit());
+        assertEquals(2, stream.getBitOffset());
+        assertEquals(0, stream.getStreamPosition());
+
+        assertEquals(1, stream.readBit());
+        assertEquals(3, stream.getBitOffset());
+        assertEquals(0, stream.getStreamPosition());
+
+        assertEquals(1, stream.readBit());
+        assertEquals(4, stream.getBitOffset());
+        assertEquals(0, stream.getStreamPosition());
+
+        assertEquals(0, stream.readBit());
+        assertEquals(5, stream.getBitOffset());
+        assertEquals(0, stream.getStreamPosition());
+
+        assertEquals(0, stream.readBit());
+        assertEquals(6, stream.getBitOffset());
+        assertEquals(0, stream.getStreamPosition());
+
+        assertEquals(0, stream.readBit());
+        assertEquals(7, stream.getBitOffset());
+        assertEquals(0, stream.getStreamPosition());
+
+        assertEquals(0, stream.readBit()); // last bit
+        assertEquals(0, stream.getBitOffset());
+        assertEquals(1, stream.getStreamPosition());
+
+        // Full reset, read same sequence again
+        stream.seek(0);
+        assertEquals(0, stream.getBitOffset());
+        assertEquals(0, stream.getStreamPosition());
+
+        assertEquals(1, stream.readBit());
+        assertEquals(1, stream.readBit());
+        assertEquals(1, stream.readBit());
+        assertEquals(1, stream.readBit());
+        assertEquals(0, stream.readBit());
+        assertEquals(0, stream.readBit());
+        assertEquals(0, stream.readBit());
+        assertEquals(0, stream.readBit());
+
+        assertEquals(0, stream.getBitOffset());
+        assertEquals(1, stream.getStreamPosition());
+
+        // Full reset, read partial
+        stream.seek(0);
+
+        assertEquals(1, stream.readBit());
+        assertEquals(1, stream.readBit());
+
+        // Byte reset, read same sequence again
+        stream.setBitOffset(0);
+
+        assertEquals(1, stream.readBit());
+        assertEquals(1, stream.readBit());
+        assertEquals(1, stream.readBit());
+        assertEquals(1, stream.readBit());
+        assertEquals(0, stream.readBit());
+
+        // Byte reset, read partial sequence again
+        stream.setBitOffset(3);
+
+        assertEquals(1, stream.readBit());
+        assertEquals(0, stream.readBit());
+        assertEquals(0, stream.getStreamPosition());
+
+        // Byte reset, read partial sequence again
+        stream.setBitOffset(6);
+
+        assertEquals(0, stream.readBit());
+        assertEquals(0, stream.readBit());
+        assertEquals(1, stream.getStreamPosition());
+
+        // Read all bits, second byte
+        assertEquals(0, stream.readBit());
+        assertEquals(1, stream.getBitOffset());
+        assertEquals(1, stream.getStreamPosition());
+
+        assertEquals(0, stream.readBit());
+        assertEquals(2, stream.getBitOffset());
+        assertEquals(1, stream.getStreamPosition());
+
+        assertEquals(0, stream.readBit());
+        assertEquals(3, stream.getBitOffset());
+        assertEquals(1, stream.getStreamPosition());
+
+        assertEquals(0, stream.readBit());
+        assertEquals(4, stream.getBitOffset());
+        assertEquals(1, stream.getStreamPosition());
+
+        assertEquals(1, stream.readBit());
+        assertEquals(5, stream.getBitOffset());
+        assertEquals(1, stream.getStreamPosition());
+
+        assertEquals(1, stream.readBit());
+        assertEquals(6, stream.getBitOffset());
+        assertEquals(1, stream.getStreamPosition());
+
+        assertEquals(1, stream.readBit());
+        assertEquals(7, stream.getBitOffset());
+        assertEquals(1, stream.getStreamPosition());
+
+        assertEquals(1, stream.readBit()); // last bit
+        assertEquals(0, stream.getBitOffset());
+        assertEquals(2, stream.getStreamPosition());
+    }
+
+    @Test
+    public void testReadBits() throws IOException {
+        byte[] bytes = new byte[] {(byte) 0xF0, (byte) 0xCC, (byte) 0xAA};
+
+        // Create wrapper stream
+        BufferedImageInputStream stream = new BufferedImageInputStream(new ByteArrayImageInputStream(bytes));
+
+        // Read all bits, first byte
+        assertEquals(3, stream.readBits(2));
+        assertEquals(2, stream.getBitOffset());
+        assertEquals(0, stream.getStreamPosition());
+
+        assertEquals(3, stream.readBits(2));
+        assertEquals(4, stream.getBitOffset());
+        assertEquals(0, stream.getStreamPosition());
+
+        assertEquals(0, stream.readBits(2));
+        assertEquals(6, stream.getBitOffset());
+        assertEquals(0, stream.getStreamPosition());
+
+        assertEquals(0, stream.readBits(2));
+        assertEquals(0, stream.getBitOffset());
+        assertEquals(1, stream.getStreamPosition());
+
+        // Read all bits, second byte
+        assertEquals(3, stream.readBits(2));
+        assertEquals(2, stream.getBitOffset());
+        assertEquals(1, stream.getStreamPosition());
+
+        assertEquals(0, stream.readBits(2));
+        assertEquals(4, stream.getBitOffset());
+        assertEquals(1, stream.getStreamPosition());
+
+        assertEquals(3, stream.readBits(2));
+        assertEquals(6, stream.getBitOffset());
+        assertEquals(1, stream.getStreamPosition());
+
+        assertEquals(0, stream.readBits(2));
+        assertEquals(0, stream.getBitOffset());
+        assertEquals(2, stream.getStreamPosition());
+
+        // Read all bits, third byte
+        assertEquals(2, stream.readBits(2));
+        assertEquals(2, stream.getBitOffset());
+        assertEquals(2, stream.getStreamPosition());
+
+        assertEquals(2, stream.readBits(2));
+        assertEquals(4, stream.getBitOffset());
+        assertEquals(2, stream.getStreamPosition());
+
+        assertEquals(2, stream.readBits(2));
+        assertEquals(6, stream.getBitOffset());
+        assertEquals(2, stream.getStreamPosition());
+
+        assertEquals(2, stream.readBits(2));
+        assertEquals(0, stream.getBitOffset());
+        assertEquals(3, stream.getStreamPosition());
+
+        // Full reset, read same sequence again
+        stream.seek(0);
+        assertEquals(0, stream.getBitOffset());
+        assertEquals(0, stream.getStreamPosition());
+
+        // Read all bits, increasing size
+        assertEquals(7, stream.readBits(3)); // 111
+        assertEquals(3, stream.getBitOffset());
+        assertEquals(0, stream.getStreamPosition());
+
+        assertEquals(8, stream.readBits(4)); // 1000
+        assertEquals(7, stream.getBitOffset());
+        assertEquals(0, stream.getStreamPosition());
+
+        assertEquals(12, stream.readBits(5)); // 01100
+        assertEquals(4, stream.getBitOffset());
+        assertEquals(1, stream.getStreamPosition());
+
+        assertEquals(50, stream.readBits(6)); // 110010
+        assertEquals(2, stream.getBitOffset());
+        assertEquals(2, stream.getStreamPosition());
+
+        assertEquals(42, stream.readBits(6)); // 101010
+        assertEquals(0, stream.getBitOffset());
+        assertEquals(3, stream.getStreamPosition());
+
+        // Full reset, read same sequence again
+        stream.seek(0);
+        assertEquals(0, stream.getBitOffset());
+        assertEquals(0, stream.getStreamPosition());
+
+        // Read all bits multi-byte
+        assertEquals(0xF0C, stream.readBits(12)); // 111100001100
+        assertEquals(4, stream.getBitOffset());
+        assertEquals(1, stream.getStreamPosition());
+
+        assertEquals(0xCAA, stream.readBits(12)); // 110010101010
+        assertEquals(0, stream.getBitOffset());
+        assertEquals(3, stream.getStreamPosition());
+
+        // Full reset, read same sequence again, all bits in one go
+        stream.seek(0);
+        assertEquals(0, stream.getBitOffset());
+        assertEquals(0, stream.getStreamPosition());
+
+        assertEquals(0xF0CCAA, stream.readBits(24));
+    }
+
+    @Test
+    public void testReadBitsRandom() throws IOException {
+        long value = random.nextLong();
+        byte[] bytes = new byte[8];
+        ByteBuffer.wrap(bytes).putLong(value);
+
+        // Create wrapper stream
+        BufferedImageInputStream stream = new BufferedImageInputStream(new ByteArrayImageInputStream(bytes));
+
+        for (int i = 1; i < 64; i++) {
+            stream.seek(0);
+            assertEquals(i + " bits differ", value >>> (64L - i), stream.readBits(i));
+        }
+    }
+
+    @Test
+    public void testClose() throws IOException {
+        // Create wrapper stream
+        ImageInputStream mock = mock(ImageInputStream.class);
+        BufferedImageInputStream stream = new BufferedImageInputStream(mock);
+
+        stream.close();
+        verify(mock, never()).close();
+    }
+
     // TODO: Write other tests
 
     // TODO: Create test that exposes read += -1 (eof) bug

imageio/imageio-core/src/test/java/com/twelvemonkeys/imageio/stream/ByteArrayImageInputStreamSpiTest.java

@@ -0,0 +1,16 @@
+package com.twelvemonkeys.imageio.stream;
+
+import javax.imageio.spi.ImageInputStreamSpi;
+
+public class ByteArrayImageInputStreamSpiTest extends ImageInputStreamSpiTest<byte[]> {
+
+    @Override
+    protected ImageInputStreamSpi createProvider() {
+        return new ByteArrayImageInputStreamSpi();
+    }
+
+    @Override
+    protected byte[] createInput() {
+        return new byte[0];
+    }
+}

imageio/imageio-core/src/test/java/com/twelvemonkeys/imageio/stream/ImageInputStreamSpiTest.java

@@ -0,0 +1,84 @@
+package com.twelvemonkeys.imageio.stream;
+
+import org.junit.Test;
+
+import javax.imageio.ImageIO;
+import javax.imageio.spi.ImageInputStreamSpi;
+import java.io.IOException;
+import java.lang.reflect.ParameterizedType;
+import java.util.Locale;
+
+import static org.junit.Assert.*;
+
+abstract class ImageInputStreamSpiTest<T> {
+    private final ImageInputStreamSpi provider = createProvider();
+
+    @SuppressWarnings("unchecked")
+    private final Class<T> inputClass = (Class<T>) ((ParameterizedType) getClass().getGenericSuperclass()).getActualTypeArguments()[0];
+
+    protected abstract ImageInputStreamSpi createProvider();
+
+    protected abstract T createInput();
+
+    @Test
+    public void testInputClass() {
+        assertEquals(inputClass, provider.getInputClass());
+    }
+
+    @Test
+    public void testVendorName() {
+        assertNotNull(provider.getVendorName());
+        assertEquals("TwelveMonkeys", provider.getVendorName());
+    }
+
+    @Test
+    public void testVersion() {
+        assertNotNull(provider.getVersion());
+    }
+
+    @Test
+    public void testDescription() {
+        assertNotNull(provider.getDescription(null));
+        assertNotNull(provider.getDescription(Locale.ENGLISH));
+    }
+
+    @Test(expected = IllegalArgumentException.class)
+    public void createNull() throws IOException {
+        provider.createInputStreamInstance(null);
+    }
+
+    @Test(expected = IllegalArgumentException.class)
+    public void createNullCached() throws IOException {
+        provider.createInputStreamInstance(null, true, ImageIO.getCacheDirectory());
+    }
+
+    @Test
+    public void createCachedNullCache() throws IOException {
+        try {
+            provider.createInputStreamInstance(createInput(), true, null);
+        }
+        catch (IllegalArgumentException expected) {
+            // All good
+            assertFalse(provider.needsCacheFile());
+        }
+    }
+
+    @Test
+    public void create() throws IOException {
+        assertNotNull(provider.createInputStreamInstance(createInput()));
+    }
+
+    @Test
+    public void createCached() throws IOException {
+        if (provider.canUseCacheFile()) {
+            assertNotNull(provider.createInputStreamInstance(createInput(), true, ImageIO.getCacheDirectory()));
+        }
+    }
+
+    @Test
+    public void createNonCached() throws IOException {
+        if (!provider.needsCacheFile()) {
+            assertNotNull(provider.createInputStreamInstance(createInput(), false, ImageIO.getCacheDirectory()));
+        }
+    }
+}

imageio/imageio-core/src/test/java/com/twelvemonkeys/imageio/stream/StreamProviderInfoTest.java

@@ -0,0 +1,23 @@
+package com.twelvemonkeys.imageio.stream;
+
+import com.twelvemonkeys.imageio.spi.ProviderInfo;
+
+import org.junit.Test;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNotNull;
+
+public class StreamProviderInfoTest {
+    private final ProviderInfo providerInfo = new StreamProviderInfo();
+
+    @Test
+    public void testVendorName() {
+        assertNotNull(providerInfo.getVendorName());
+        assertEquals("TwelveMonkeys", providerInfo.getVendorName());
+    }
+
+    @Test
+    public void testVersion() {
+        assertNotNull(providerInfo.getVersion());
+    }
+}

imageio/imageio-core/src/test/java/com/twelvemonkeys/imageio/stream/URLImageInputStreamSpiTest.java

@@ -0,0 +1,16 @@
+package com.twelvemonkeys.imageio.stream;
+
+import javax.imageio.spi.ImageInputStreamSpi;
+import java.net.URL;
+
+public class URLImageInputStreamSpiTest extends ImageInputStreamSpiTest<URL> {
+    @Override
+    protected ImageInputStreamSpi createProvider() {
+        return new URLImageInputStreamSpi();
+    }
+
+    @Override
+    protected URL createInput() {
+        return getClass().getResource("/empty-stream.txt");
+    }
+}

imageio/imageio-core/src/test/java/com/twelvemonkeys/imageio/util/ImageReaderAbstractTest.java

@@ -31,6 +31,7 @@
 package com.twelvemonkeys.imageio.util;
 
 import com.twelvemonkeys.imageio.stream.URLImageInputStreamSpi;
+
 import org.junit.Ignore;
 import org.junit.Test;
 import org.mockito.InOrder;
@@ -49,6 +50,7 @@ import java.awt.image.RenderedImage;
 import java.awt.image.SampleModel;
 import java.io.File;
 import java.io.IOException;
+import java.lang.reflect.ParameterizedType;
 import java.net.URL;
 import java.util.ArrayList;
 import java.util.Arrays;
@@ -69,27 +71,26 @@ public abstract class ImageReaderAbstractTest<T extends ImageReader> {
     // TODO: Should we really test if the provider is installed?
     //       - Pro: Tests the META-INF/services config
     //       - Con: Not all providers should be installed at runtime...
+    // TODO: Create own subclass for testing the Spis?
 
     static {
         IIORegistry.getDefaultInstance().registerServiceProvider(new URLImageInputStreamSpi());
         ImageIO.setUseCache(false);
     }
 
-    protected abstract List<TestData> getTestData();
+    @SuppressWarnings("unchecked")
+    private final Class<T> readerClass = (Class<T>) ((ParameterizedType) getClass().getGenericSuperclass()).getActualTypeArguments()[0];
+
+    protected final ImageReaderSpi provider = createProvider();
 
     protected abstract ImageReaderSpi createProvider();
 
-    protected abstract Class<T> getReaderClass();
-
-    protected T createReader() {
-        try {
-            return getReaderClass().newInstance();
-        }
-        catch (InstantiationException | IllegalAccessException e) {
-            throw new RuntimeException(e);
-        }
+    protected final T createReader() throws IOException {
+        return readerClass.cast(provider.createReaderInstance(null));
     }
 
+    protected abstract List<TestData> getTestData();
+
     protected abstract List<String> getFormatNames();
 
     protected abstract List<String> getSuffixes();
@@ -101,9 +102,7 @@ public abstract class ImageReaderAbstractTest<T extends ImageReader> {
     }
 
     protected static void failBecause(String message, Throwable exception) {
-        AssertionError error = new AssertionError(message);
-        error.initCause(exception);
-        throw error;
+        throw new AssertionError(message, exception);
     }
 
     protected void assertProviderInstalledForName(final String pFormat, final Class<? extends ImageReader> pReaderClass) {
@@ -123,17 +122,20 @@ public abstract class ImageReaderAbstractTest<T extends ImageReader> {
         boolean found = false;
         while (pReaders.hasNext()) {
             ImageReader reader = pReaders.next();
-            if (reader.getClass() == pReaderClass) {
+            if (reader.getClass() == pReaderClass && isOurProvider(reader.getOriginatingProvider())) {
                 found = true;
             }
         }
 
-        assertTrue(String.format("%s not installed for %s", pReaderClass.getSimpleName(), pFormat), found);
+        assertTrue(String.format("%s not provided by %s for '%s'", pReaderClass.getSimpleName(), provider.getClass().getSimpleName(), pFormat), found);
+    }
+
+    private boolean isOurProvider(final ImageReaderSpi spi) {
+        return provider.getClass().isInstance(spi);
     }
 
     @Test
     public void testProviderInstalledForNames() {
-        Class<? extends ImageReader> readerClass = getReaderClass();
         for (String name : getFormatNames()) {
             assertProviderInstalledForName(name, readerClass);
         }
@@ -141,7 +143,6 @@ public abstract class ImageReaderAbstractTest<T extends ImageReader> {
 
     @Test
     public void testProviderInstalledForSuffixes() {
-        Class<? extends ImageReader> readerClass = getReaderClass();
         for (String suffix : getSuffixes()) {
             assertProviderInstalledForSuffix(suffix, readerClass);
         }
@@ -149,7 +150,6 @@ public abstract class ImageReaderAbstractTest<T extends ImageReader> {
 
     @Test
     public void testProviderInstalledForMIMETypes() {
-        Class<? extends ImageReader> readerClass = getReaderClass();
         for (String type : getMIMETypes()) {
             assertProviderInstalledForMIMEType(type, readerClass);
         }
@@ -159,7 +159,6 @@ public abstract class ImageReaderAbstractTest<T extends ImageReader> {
     public void testProviderCanRead() throws IOException {
         List<TestData> testData = getTestData();
 
-        ImageReaderSpi provider = createProvider();
         for (TestData data : testData) {
             ImageInputStream stream = data.getInputStream();
             assertNotNull(stream);
@@ -172,7 +171,7 @@ public abstract class ImageReaderAbstractTest<T extends ImageReader> {
         boolean canRead = false;
 
         try {
-            canRead = createProvider().canDecodeInput(null);
+            canRead = provider.canDecodeInput(null);
         }
         catch (IllegalArgumentException ignore) {
         }
@@ -187,7 +186,7 @@ public abstract class ImageReaderAbstractTest<T extends ImageReader> {
     }
 
     @Test
-    public void testSetInput() {
+    public void testSetInput() throws IOException {
         // Should just pass with no exceptions
         ImageReader reader = createReader();
         assertNotNull(reader);
@@ -200,7 +199,7 @@ public abstract class ImageReaderAbstractTest<T extends ImageReader> {
     }
 
     @Test
-    public void testSetInputNull() {
+    public void testSetInputNull() throws IOException {
         // Should just pass with no exceptions
         ImageReader reader = createReader();
         assertNotNull(reader);
@@ -209,7 +208,7 @@ public abstract class ImageReaderAbstractTest<T extends ImageReader> {
     }
 
     @Test
-    public void testRead() {
+    public void testRead() throws IOException {
         ImageReader reader = createReader();
 
         for (TestData data : getTestData()) {
@@ -243,7 +242,7 @@ public abstract class ImageReaderAbstractTest<T extends ImageReader> {
     }
 
     @Test
-    public void testReadIndexNegative() {
+    public void testReadIndexNegative() throws IOException {
         ImageReader reader = createReader();
         TestData data = getTestData().get(0);
         reader.setInput(data.getInputStream());
@@ -264,7 +263,7 @@ public abstract class ImageReaderAbstractTest<T extends ImageReader> {
     }
 
     @Test
-    public void testReadIndexOutOfBounds() {
+    public void testReadIndexOutOfBounds() throws IOException {
         ImageReader reader = createReader();
         TestData data = getTestData().get(0);
         reader.setInput(data.getInputStream());
@@ -285,7 +284,7 @@ public abstract class ImageReaderAbstractTest<T extends ImageReader> {
     }
 
     @Test
-    public void testReadNoInput() {
+    public void testReadNoInput() throws IOException {
         ImageReader reader = createReader();
         // Do not set input
 
@@ -325,7 +324,7 @@ public abstract class ImageReaderAbstractTest<T extends ImageReader> {
     }
 
     @Test
-    public void testReadIndexNegativeWithParam() {
+    public void testReadIndexNegativeWithParam() throws IOException {
         ImageReader reader = createReader();
         TestData data = getTestData().get(0);
         reader.setInput(data.getInputStream());
@@ -347,7 +346,7 @@ public abstract class ImageReaderAbstractTest<T extends ImageReader> {
     }
 
     @Test
-    public void testReadIndexOutOfBoundsWithParam() {
+    public void testReadIndexOutOfBoundsWithParam() throws IOException {
         ImageReader reader = createReader();
         TestData data = getTestData().get(0);
         reader.setInput(data.getInputStream());
@@ -369,7 +368,7 @@ public abstract class ImageReaderAbstractTest<T extends ImageReader> {
     }
 
     @Test
-    public void testReadNoInputWithParam() {
+    public void testReadNoInputWithParam() throws IOException {
         ImageReader reader = createReader();
         // Do not set input
 
@@ -390,7 +389,7 @@ public abstract class ImageReaderAbstractTest<T extends ImageReader> {
     }
 
     @Test
-    public void testReadWithNewParam() {
+    public void testReadWithNewParam() throws IOException {
         ImageReader reader = createReader();
         TestData data = getTestData().get(0);
         reader.setInput(data.getInputStream());
@@ -411,7 +410,7 @@ public abstract class ImageReaderAbstractTest<T extends ImageReader> {
     }
 
     @Test
-    public void testReadWithDefaultParam() {
+    public void testReadWithDefaultParam() throws IOException {
         ImageReader reader = createReader();
         TestData data = getTestData().get(0);
         reader.setInput(data.getInputStream());
@@ -432,7 +431,7 @@ public abstract class ImageReaderAbstractTest<T extends ImageReader> {
     }
 
     @Test
-    public void testReadWithNullParam() {
+    public void testReadWithNullParam() throws IOException {
         ImageReader reader = createReader();
         TestData data = getTestData().get(0);
         reader.setInput(data.getInputStream());
@@ -453,7 +452,7 @@ public abstract class ImageReaderAbstractTest<T extends ImageReader> {
     }
 
     @Test
-    public void testReadWithSizeParam() {
+    public void testReadWithSizeParam() throws IOException {
         ImageReader reader = createReader();
         TestData data = getTestData().get(0);
         reader.setInput(data.getInputStream());
@@ -479,7 +478,7 @@ public abstract class ImageReaderAbstractTest<T extends ImageReader> {
     }
 
     @Test
-    public void testReadWithSubsampleParamDimensions() {
+    public void testReadWithSubsampleParamDimensions() throws IOException {
         ImageReader reader = createReader();
         TestData data = getTestData().get(0);
         reader.setInput(data.getInputStream());
@@ -530,6 +529,7 @@ public abstract class ImageReaderAbstractTest<T extends ImageReader> {
     // TODO: Subsample all test data
     // TODO: Subsample with varying ratios and offsets
 
+    @SuppressWarnings("SameParameterValue")
     protected final void assertSubsampledImageDataEquals(String message, BufferedImage expected, BufferedImage actual, ImageReadParam param) throws IOException {
         assertNotNull("Expected image was null", expected);
         assertNotNull("Actual image was null!", actual);
@@ -595,7 +595,7 @@ public abstract class ImageReaderAbstractTest<T extends ImageReader> {
     }
 
     @Test
-    public void testReadWithSourceRegionParam() {
+    public void testReadWithSourceRegionParam() throws IOException {
         ImageReader reader = createReader();
         TestData data = getTestData().get(0);
         reader.setInput(data.getInputStream());
@@ -626,40 +626,53 @@ public abstract class ImageReaderAbstractTest<T extends ImageReader> {
 
     protected void assertReadWithSourceRegionParamEqualImage(final Rectangle r, final TestData data, final int imageIndex) throws IOException {
         ImageReader reader = createReader();
-        reader.setInput(data.getInputStream());
-        ImageReadParam param = reader.getDefaultReadParam();
+        try (ImageInputStream inputStream = data.getInputStream()) {
+            reader.setInput(inputStream);
+            ImageReadParam param = reader.getDefaultReadParam();
 
-        // Read full image and get sub image for comparison
-        final BufferedImage roi = reader.read(imageIndex, param).getSubimage(r.x, r.y, r.width, r.height);
+            // Read full image and get sub image for comparison
+            BufferedImage original = reader.read(imageIndex, param);
+            final BufferedImage roi = original.getSubimage(r.x, r.y, r.width, r.height);
 
-        param.setSourceRegion(r);
+            param.setSourceRegion(r);
 
-        final BufferedImage image = reader.read(imageIndex, param);
+            final BufferedImage image = reader.read(imageIndex, param);
 
-//        try {
-//            SwingUtilities.invokeAndWait(new Runnable() {
-//                public void run() {
-//                    JPanel panel = new JPanel(new FlowLayout());
-//                    panel.add(new JLabel(new BufferedImageIcon(roi, r.width * 10, r.height * 10, true)));
-//                    panel.add(new JLabel(new BufferedImageIcon(image, r.width * 10, r.height * 10, true)));
-//                    JOptionPane.showConfirmDialog(null, panel);
-//                }
-//            });
-//        }
-//        catch (Exception e) {
-//            throw new RuntimeException(e);
-//        }
+            assertNotNull("Image was null!", image);
+            assertEquals("Read image has wrong width: " + image.getWidth(), r.width, image.getWidth());
+            assertEquals("Read image has wrong height: " + image.getHeight(), r.height, image.getHeight());
 
-        assertNotNull("Image was null!", image);
-        assertEquals("Read image has wrong width: " + image.getWidth(), r.width, image.getWidth());
-        assertEquals("Read image has wrong height: " + image.getHeight(), r.height, image.getHeight());
-        assertImageDataEquals("Images differ", roi, image);
+            try {
+                assertImageDataEquals("Images differ", roi, image);
+            }
+            catch (AssertionError e) {
+                File tempExpected = File.createTempFile("junit-expected-", ".png");
+                System.err.println("tempExpected.getAbsolutePath(): " + tempExpected.getAbsolutePath());
 
-        reader.dispose();
+                Graphics2D graphics = original.createGraphics();
+                try {
+                    graphics.setColor(Color.RED);
+                    graphics.draw(r);
+                }
+                finally {
+                    graphics.dispose();
+                }
+
+                ImageIO.write(original, "PNG", tempExpected);
+                File tempActual = File.createTempFile("junit-actual-", ".png");
+                System.err.println("tempActual.getAbsolutePath(): " + tempActual.getAbsolutePath());
+                ImageIO.write(image, "PNG", tempActual);
+
+                throw e;
+            }
+        }
+        finally {
+            reader.dispose();
+        }
     }
 
     @Test
-    public void testReadWithSizeAndSourceRegionParam() {
+    public void testReadWithSizeAndSourceRegionParam() throws IOException {
         // TODO: Is this test correct???
         ImageReader reader = createReader();
         TestData data = getTestData().get(0);
@@ -690,7 +703,7 @@ public abstract class ImageReaderAbstractTest<T extends ImageReader> {
     }
 
     @Test
-    public void testReadWithSubsampleAndSourceRegionParam() {
+    public void testReadWithSubsampleAndSourceRegionParam() throws IOException {
         // NOTE: The "standard" (com.sun.imageio.plugin.*) ImageReaders pass
         // this test, so the test should be correct...
         ImageReader reader = createReader();
@@ -716,7 +729,7 @@ public abstract class ImageReaderAbstractTest<T extends ImageReader> {
     }
 
     @Test
-    public void testReadAsRenderedImageIndexNegative() {
+    public void testReadAsRenderedImageIndexNegative() throws IOException {
         ImageReader reader = createReader();
         TestData data = getTestData().get(0);
         reader.setInput(data.getInputStream());
@@ -739,7 +752,7 @@ public abstract class ImageReaderAbstractTest<T extends ImageReader> {
     }
 
     @Test
-    public void testReadAsRenderedImageIndexOutOfBounds() throws IIOException {
+    public void testReadAsRenderedImageIndexOutOfBounds() throws IOException {
         ImageReader reader = createReader();
         TestData data = getTestData().get(0);
         reader.setInput(data.getInputStream());
@@ -766,7 +779,7 @@ public abstract class ImageReaderAbstractTest<T extends ImageReader> {
     }
 
     @Test
-    public void testReadAsRenderedImageNoInput() {
+    public void testReadAsRenderedImageNoInput() throws IOException {
         ImageReader reader = createReader();
         // Do not set input
 
@@ -788,7 +801,7 @@ public abstract class ImageReaderAbstractTest<T extends ImageReader> {
     }
 
     @Test
-    public void testReadAsRenderedImage() {
+    public void testReadAsRenderedImage() throws IOException {
         ImageReader reader = createReader();
         TestData data = getTestData().get(0);
         reader.setInput(data.getInputStream());
@@ -811,7 +824,7 @@ public abstract class ImageReaderAbstractTest<T extends ImageReader> {
     }
 
     @Test
-    public void testReadAsRenderedImageWithDefaultParam() {
+    public void testReadAsRenderedImageWithDefaultParam() throws IOException {
         ImageReader reader = createReader();
         TestData data = getTestData().get(0);
         reader.setInput(data.getInputStream());
@@ -834,7 +847,7 @@ public abstract class ImageReaderAbstractTest<T extends ImageReader> {
     }
 
     @Test
-    public void testGetDefaultReadParam() {
+    public void testGetDefaultReadParam() throws IOException {
         ImageReader reader = createReader();
         ImageReadParam param = reader.getDefaultReadParam();
         assertNotNull(param);
@@ -842,7 +855,7 @@ public abstract class ImageReaderAbstractTest<T extends ImageReader> {
     }
 
     @Test
-    public void testGetFormatName() {
+    public void testGetFormatName() throws IOException {
         ImageReader reader = createReader();
         TestData data = getTestData().get(0);
         reader.setInput(data.getInputStream());
@@ -858,7 +871,7 @@ public abstract class ImageReaderAbstractTest<T extends ImageReader> {
     }
 
     @Test
-    public void testGetMinIndex() {
+    public void testGetMinIndex() throws IOException {
         ImageReader reader = createReader();
         TestData data = getTestData().get(0);
         reader.setInput(data.getInputStream());
@@ -874,7 +887,7 @@ public abstract class ImageReaderAbstractTest<T extends ImageReader> {
     }
 
     @Test
-    public void testGetMinIndexNoInput() {
+    public void testGetMinIndexNoInput() throws IOException {
         ImageReader reader = createReader();
         int num = 0;
 
@@ -888,7 +901,7 @@ public abstract class ImageReaderAbstractTest<T extends ImageReader> {
     }
 
     @Test
-    public void testGetNumImages() {
+    public void testGetNumImages() throws IOException {
         ImageReader reader = createReader();
         TestData data = getTestData().get(0);
         reader.setInput(data.getInputStream());
@@ -917,7 +930,7 @@ public abstract class ImageReaderAbstractTest<T extends ImageReader> {
     }
 
     @Test
-    public void testGetNumImagesNoInput() {
+    public void testGetNumImagesNoInput() throws IOException {
         ImageReader reader = createReader();
         int num = -1;
 
@@ -945,7 +958,7 @@ public abstract class ImageReaderAbstractTest<T extends ImageReader> {
     }
 
     @Test
-    public void testGetWidth() {
+    public void testGetWidth() throws IOException {
         ImageReader reader = createReader();
         TestData data = getTestData().get(0);
         reader.setInput(data.getInputStream());
@@ -962,7 +975,7 @@ public abstract class ImageReaderAbstractTest<T extends ImageReader> {
     }
 
     @Test
-    public void testGetWidthIndexOutOfBounds() {
+    public void testGetWidthIndexOutOfBounds() throws IOException {
         ImageReader reader = createReader();
         TestData data = getTestData().get(0);
         reader.setInput(data.getInputStream());
@@ -983,13 +996,13 @@ public abstract class ImageReaderAbstractTest<T extends ImageReader> {
     }
 
     @Test
-    public void testGetWidthNoInput() {
+    public void testGetWidthNoInput() throws IOException {
         ImageReader reader = createReader();
 
         int width = 0;
         try {
             width = reader.getWidth(0);
-            fail("Width read without imput");
+            fail("Width read without input");
         }
         catch (IllegalStateException ignore) {
         }
@@ -1001,7 +1014,7 @@ public abstract class ImageReaderAbstractTest<T extends ImageReader> {
     }
 
     @Test
-    public void testGetHeight() {
+    public void testGetHeight() throws IOException {
         ImageReader reader = createReader();
         TestData data = getTestData().get(0);
         reader.setInput(data.getInputStream());
@@ -1018,13 +1031,13 @@ public abstract class ImageReaderAbstractTest<T extends ImageReader> {
     }
 
     @Test
-    public void testGetHeightNoInput() {
+    public void testGetHeightNoInput() throws IOException {
         ImageReader reader = createReader();
 
         int height = 0;
         try {
             height = reader.getHeight(0);
-            fail("height read without imput");
+            fail("height read without input");
         }
         catch (IllegalStateException ignore) {
         }
@@ -1036,7 +1049,7 @@ public abstract class ImageReaderAbstractTest<T extends ImageReader> {
     }
 
     @Test
-    public void testGetHeightIndexOutOfBounds() {
+    public void testGetHeightIndexOutOfBounds() throws IOException {
         ImageReader reader = createReader();
         TestData data = getTestData().get(0);
         reader.setInput(data.getInputStream());
@@ -1057,7 +1070,7 @@ public abstract class ImageReaderAbstractTest<T extends ImageReader> {
     }
 
     @Test
-    public void testGetAspectRatio() {
+    public void testGetAspectRatio() throws IOException {
         ImageReader reader = createReader();
         TestData data = getTestData().get(0);
         reader.setInput(data.getInputStream());
@@ -1075,7 +1088,7 @@ public abstract class ImageReaderAbstractTest<T extends ImageReader> {
     }
 
     @Test
-    public void testGetAspectRatioNoInput() {
+    public void testGetAspectRatioNoInput() throws IOException {
         ImageReader reader = createReader();
 
         float aspectRatio = 0f;
@@ -1093,7 +1106,7 @@ public abstract class ImageReaderAbstractTest<T extends ImageReader> {
     }
 
     @Test
-    public void testGetAspectRatioIndexOutOfBounds() {
+    public void testGetAspectRatioIndexOutOfBounds() throws IOException {
         ImageReader reader = createReader();
         TestData data = getTestData().get(0);
         reader.setInput(data.getInputStream());
@@ -1114,13 +1127,13 @@ public abstract class ImageReaderAbstractTest<T extends ImageReader> {
     }
 
     @Test
-    public void testDisposeBeforeRead() {
+    public void testDisposeBeforeRead() throws IOException {
         ImageReader reader = createReader();
         reader.dispose(); // Just pass with no exceptions
     }
 
     @Test
-    public void testDisposeAfterRead() {
+    public void testDisposeAfterRead() throws IOException {
         ImageReader reader = createReader();
         TestData data = getTestData().get(0);
         reader.setInput(data.getInputStream());
@@ -1128,21 +1141,21 @@ public abstract class ImageReaderAbstractTest<T extends ImageReader> {
     }
 
     @Test
-    public void testAddIIOReadProgressListener() {
+    public void testAddIIOReadProgressListener() throws IOException {
         ImageReader reader = createReader();
         reader.addIIOReadProgressListener(mock(IIOReadProgressListener.class));
         reader.dispose();
     }
 
     @Test
-    public void testAddIIOReadProgressListenerNull() {
+    public void testAddIIOReadProgressListenerNull() throws IOException {
         ImageReader reader = createReader();
         reader.addIIOReadProgressListener(null);
         reader.dispose();
     }
 
     @Test
-    public void testAddIIOReadProgressListenerCallbacks() {
+    public void testAddIIOReadProgressListenerCallbacks() throws IOException {
         ImageReader reader = createReader();
         TestData data = getTestData().get(0);
         reader.setInput(data.getInputStream());
@@ -1166,7 +1179,7 @@ public abstract class ImageReaderAbstractTest<T extends ImageReader> {
     }
 
     @Test
-    public void testMultipleAddIIOReadProgressListenerCallbacks() {
+    public void testMultipleAddIIOReadProgressListenerCallbacks() throws IOException {
         ImageReader reader = createReader();
         TestData data = getTestData().get(0);
         reader.setInput(data.getInputStream());
@@ -1204,21 +1217,21 @@ public abstract class ImageReaderAbstractTest<T extends ImageReader> {
     }
 
     @Test
-    public void testRemoveIIOReadProgressListenerNull() {
+    public void testRemoveIIOReadProgressListenerNull() throws IOException {
         ImageReader reader = createReader();
         reader.removeIIOReadProgressListener(null);
         reader.dispose();
     }
 
     @Test
-    public void testRemoveIIOReadProgressListenerNone() {
+    public void testRemoveIIOReadProgressListenerNone() throws IOException {
         ImageReader reader = createReader();
         reader.removeIIOReadProgressListener(mock(IIOReadProgressListener.class));
         reader.dispose();
     }
 
     @Test
-    public void testRemoveIIOReadProgressListener() {
+    public void testRemoveIIOReadProgressListener() throws IOException {
         ImageReader reader = createReader();
         TestData data = getTestData().get(0);
         reader.setInput(data.getInputStream());
@@ -1240,7 +1253,7 @@ public abstract class ImageReaderAbstractTest<T extends ImageReader> {
     }
 
     @Test
-    public void testRemoveIIOReadProgressListenerMultiple() {
+    public void testRemoveIIOReadProgressListenerMultiple() throws IOException {
         ImageReader reader = createReader();
         TestData data = getTestData().get(0);
         reader.setInput(data.getInputStream());
@@ -1272,7 +1285,7 @@ public abstract class ImageReaderAbstractTest<T extends ImageReader> {
     }
 
     @Test
-    public void testRemoveAllIIOReadProgressListeners() {
+    public void testRemoveAllIIOReadProgressListeners() throws IOException {
         ImageReader reader = createReader();
         TestData data = getTestData().get(0);
         reader.setInput(data.getInputStream());
@@ -1295,7 +1308,7 @@ public abstract class ImageReaderAbstractTest<T extends ImageReader> {
     }
 
     @Test
-    public void testRemoveAllIIOReadProgressListenersMultiple() {
+    public void testRemoveAllIIOReadProgressListenersMultiple() throws IOException {
         ImageReader reader = createReader();
         TestData data = getTestData().get(0);
         reader.setInput(data.getInputStream());
@@ -1322,7 +1335,7 @@ public abstract class ImageReaderAbstractTest<T extends ImageReader> {
     }
 
     @Test
-    public void testAbort() {
+    public void testAbort() throws IOException {
         final ImageReader reader = createReader();
         TestData data = getTestData().get(0);
         reader.setInput(data.getInputStream());
@@ -1336,7 +1349,7 @@ public abstract class ImageReaderAbstractTest<T extends ImageReader> {
         // Create a listener that just makes the reader abort immediately...
         IIOReadProgressListener abortingListener = mock(IIOReadProgressListener.class, "Aborter");
         Answer<Void> abort = new Answer<Void>() {
-            public Void answer(InvocationOnMock invocation) throws Throwable {
+            public Void answer(InvocationOnMock invocation) {
                 reader.abort();
                 return null;
             }
@@ -1387,7 +1400,7 @@ public abstract class ImageReaderAbstractTest<T extends ImageReader> {
                 }
             }
 
-            assertTrue("ImageTypeSepcifier from getRawImageType should be in the iterator from getImageTypes", rawFound);
+            assertTrue("ImageTypeSpecifier from getRawImageType should be in the iterator from getImageTypes", rawFound);
         }
         reader.dispose();
     }
@@ -1569,7 +1582,6 @@ public abstract class ImageReaderAbstractTest<T extends ImageReader> {
         reader.dispose();
     }
 
-    @SuppressWarnings("ConstantConditions")
     @Test
     public void testSetDestinationOffsetNull() throws IOException {
         final ImageReader reader = createReader();
@@ -1620,7 +1632,7 @@ public abstract class ImageReaderAbstractTest<T extends ImageReader> {
             assertEquals(expectedModel.getDataType(), resultModel.getDataType());
             assertEquals(expectedModel.getNumBands(), resultModel.getNumBands());
             assertEquals(expectedModel.getNumDataElements(), resultModel.getNumDataElements());
-            assertTrue(Arrays.equals(expectedModel.getSampleSize(), resultModel.getSampleSize()));
+            assertArrayEquals(expectedModel.getSampleSize(), resultModel.getSampleSize());
             assertEquals(expectedModel.getTransferType(), resultModel.getTransferType());
             for (int i = 0; i < expectedModel.getNumBands(); i++) {
                 assertEquals(expectedModel.getSampleSize(i), resultModel.getSampleSize(i));
@@ -1692,20 +1704,18 @@ public abstract class ImageReaderAbstractTest<T extends ImageReader> {
 
     @Ignore("TODO: Implement")
     @Test
-    public void testSetDestinationBands() throws IOException {
+    public void testSetDestinationBands() {
         throw new UnsupportedOperationException("Method testSetDestinationBands not implemented"); // TODO: Implement
     }
 
     @Ignore("TODO: Implement")
     @Test
-    public void testSetSourceBands() throws IOException {
+    public void testSetSourceBands() {
         throw new UnsupportedOperationException("Method testSetDestinationBands not implemented"); // TODO: Implement
     }
 
     @Test
     public void testProviderAndMetadataFormatNamesMatch() throws IOException {
-        ImageReaderSpi provider = createProvider();
-
         ImageReader reader = createReader();
         reader.setInput(getTestData().get(0).getInputStream());
 
@@ -1826,7 +1836,7 @@ public abstract class ImageReaderAbstractTest<T extends ImageReader> {
 
         @Override
         public String toString() {
-            return getClass().getSimpleName() + ": " + String.valueOf(input);
+            return String.format("%s: %s", getClass().getSimpleName(), input);
         }
     }
 }

imageio/imageio-core/src/test/java/com/twelvemonkeys/imageio/util/ImageWriterAbstractTest.java

@@ -31,6 +31,7 @@
 package com.twelvemonkeys.imageio.util;
 
 import com.twelvemonkeys.imageio.stream.URLImageInputStreamSpi;
+
 import org.junit.Test;
 import org.mockito.InOrder;
 
@@ -39,12 +40,14 @@ import javax.imageio.ImageWriteParam;
 import javax.imageio.ImageWriter;
 import javax.imageio.event.IIOWriteProgressListener;
 import javax.imageio.spi.IIORegistry;
+import javax.imageio.spi.ImageWriterSpi;
 import javax.imageio.stream.ImageOutputStream;
 import java.awt.*;
 import java.awt.image.BufferedImage;
 import java.awt.image.RenderedImage;
 import java.io.ByteArrayOutputStream;
 import java.io.IOException;
+import java.lang.reflect.ParameterizedType;
 import java.net.URL;
 import java.util.List;
 
@@ -59,7 +62,7 @@ import static org.mockito.Mockito.*;
  * @author last modified by $Author: haku $
  * @version $Id: ImageReaderAbstractTestCase.java,v 1.0 18.nov.2004 17:38:33 haku Exp $
  */
-public abstract class ImageWriterAbstractTest {
+public abstract class ImageWriterAbstractTest<T extends ImageWriter> {
 
     // TODO: Move static block + getClassLoaderResource to common superclass for reader/writer test cases or delegate.
 
@@ -68,7 +71,16 @@ public abstract class ImageWriterAbstractTest {
         ImageIO.setUseCache(false);
     }
 
-    protected abstract ImageWriter createImageWriter();
+    @SuppressWarnings("unchecked")
+    private final Class<T> writerClass = (Class<T>) ((ParameterizedType) getClass().getGenericSuperclass()).getActualTypeArguments()[0];
+
+    protected final ImageWriterSpi provider = createProvider();
+
+    protected abstract ImageWriterSpi createProvider();
+
+    protected final T createWriter() throws IOException {
+        return writerClass.cast(provider.createWriterInstance(null));
+    }
 
     protected abstract List<? extends RenderedImage> getTestData();
 
@@ -104,22 +116,22 @@ public abstract class ImageWriterAbstractTest {
     @Test
     public void testSetOutput() throws IOException {
         // Should just pass with no exceptions
-        ImageWriter writer = createImageWriter();
+        ImageWriter writer = createWriter();
         assertNotNull(writer);
         writer.setOutput(ImageIO.createImageOutputStream(new ByteArrayOutputStream()));
     }
 
     @Test
-    public void testSetOutputNull() {
+    public void testSetOutputNull() throws IOException {
         // Should just pass with no exceptions
-        ImageWriter writer = createImageWriter();
+        ImageWriter writer = createWriter();
         assertNotNull(writer);
         writer.setOutput(null);
     }
 
     @Test
     public void testWrite() throws IOException {
-        ImageWriter writer = createImageWriter();
+        ImageWriter writer = createWriter();
 
         for (RenderedImage testData : getTestData()) {
             ByteArrayOutputStream buffer = new ByteArrayOutputStream();
@@ -136,10 +148,9 @@ public abstract class ImageWriterAbstractTest {
         }
     }
 
-    @SuppressWarnings("ConstantConditions")
     @Test
     public void testWriteNull() throws IOException {
-        ImageWriter writer = createImageWriter();
+        ImageWriter writer = createWriter();
         ByteArrayOutputStream buffer = new ByteArrayOutputStream();
         writer.setOutput(ImageIO.createImageOutputStream(buffer));
 
@@ -156,8 +167,8 @@ public abstract class ImageWriterAbstractTest {
     }
 
     @Test(expected = IllegalStateException.class)
-    public void testWriteNoOutput() {
-        ImageWriter writer = createImageWriter();
+    public void testWriteNoOutput() throws IOException {
+        ImageWriter writer = createWriter();
 
         try {
             writer.write(getTestData(0));
@@ -168,8 +179,8 @@ public abstract class ImageWriterAbstractTest {
     }
 
     @Test
-    public void testGetDefaultWriteParam() {
-        ImageWriter writer = createImageWriter();
+    public void testGetDefaultWriteParam() throws IOException {
+        ImageWriter writer = createWriter();
         ImageWriteParam param = writer.getDefaultWriteParam();
         assertNotNull("Default ImageWriteParam is null", param);
     }
@@ -178,20 +189,20 @@ public abstract class ImageWriterAbstractTest {
     // TODO: Source region and subsampling at least
 
     @Test
-    public void testAddIIOWriteProgressListener() {
-        ImageWriter writer = createImageWriter();
+    public void testAddIIOWriteProgressListener() throws IOException {
+        ImageWriter writer = createWriter();
         writer.addIIOWriteProgressListener(mock(IIOWriteProgressListener.class));
     }
 
     @Test
-    public void testAddIIOWriteProgressListenerNull() {
-        ImageWriter writer = createImageWriter();
+    public void testAddIIOWriteProgressListenerNull() throws IOException {
+        ImageWriter writer = createWriter();
         writer.addIIOWriteProgressListener(null);
     }
 
     @Test
     public void testAddIIOWriteProgressListenerCallbacks() throws IOException {
-        ImageWriter writer = createImageWriter();
+        ImageWriter writer = createWriter();
         ByteArrayOutputStream buffer = new ByteArrayOutputStream();
         writer.setOutput(ImageIO.createImageOutputStream(buffer));
 
@@ -214,7 +225,7 @@ public abstract class ImageWriterAbstractTest {
 
     @Test
     public void testMultipleAddIIOWriteProgressListenerCallbacks() throws IOException {
-        ImageWriter writer = createImageWriter();
+        ImageWriter writer = createWriter();
         ByteArrayOutputStream buffer = new ByteArrayOutputStream();
         writer.setOutput(ImageIO.createImageOutputStream(buffer));
 
@@ -250,20 +261,20 @@ public abstract class ImageWriterAbstractTest {
     }
 
     @Test
-    public void testRemoveIIOWriteProgressListenerNull() {
-        ImageWriter writer = createImageWriter();
+    public void testRemoveIIOWriteProgressListenerNull() throws IOException {
+        ImageWriter writer = createWriter();
         writer.removeIIOWriteProgressListener(null);
     }
 
     @Test
-    public void testRemoveIIOWriteProgressListenerNone() {
-        ImageWriter writer = createImageWriter();
+    public void testRemoveIIOWriteProgressListenerNone() throws IOException {
+        ImageWriter writer = createWriter();
         writer.removeIIOWriteProgressListener(mock(IIOWriteProgressListener.class));
     }
 
     @Test
     public void testRemoveIIOWriteProgressListener() throws IOException {
-        ImageWriter writer = createImageWriter();
+        ImageWriter writer = createWriter();
         ByteArrayOutputStream buffer = new ByteArrayOutputStream();
         writer.setOutput(ImageIO.createImageOutputStream(buffer));
 
@@ -284,7 +295,7 @@ public abstract class ImageWriterAbstractTest {
 
     @Test
     public void testRemoveIIOWriteProgressListenerMultiple() throws IOException {
-        ImageWriter writer = createImageWriter();
+        ImageWriter writer = createWriter();
         ByteArrayOutputStream buffer = new ByteArrayOutputStream();
         writer.setOutput(ImageIO.createImageOutputStream(buffer));
 
@@ -316,7 +327,7 @@ public abstract class ImageWriterAbstractTest {
 
     @Test
     public void testRemoveAllIIOWriteProgressListeners() throws IOException {
-        ImageWriter writer = createImageWriter();
+        ImageWriter writer = createWriter();
         ByteArrayOutputStream buffer = new ByteArrayOutputStream();
         writer.setOutput(ImageIO.createImageOutputStream(buffer));
 
@@ -339,7 +350,7 @@ public abstract class ImageWriterAbstractTest {
 
     @Test
     public void testRemoveAllIIOWriteProgressListenersMultiple() throws IOException {
-        ImageWriter writer = createImageWriter();
+        ImageWriter writer = createWriter();
         ByteArrayOutputStream buffer = new ByteArrayOutputStream();
         writer.setOutput(ImageIO.createImageOutputStream(buffer));
 

imageio/imageio-core/src/test/java/com/twelvemonkeys/imageio/util/UInt32ImageTypeSpecifierTest.java

@@ -31,6 +31,7 @@
 package com.twelvemonkeys.imageio.util;
 
 import com.twelvemonkeys.imageio.color.ColorSpaces;
+
 import org.junit.Test;
 
 import javax.imageio.ImageTypeSpecifier;
@@ -39,7 +40,8 @@ import java.awt.image.ComponentColorModel;
 import java.awt.image.DataBuffer;
 import java.awt.image.PixelInterleavedSampleModel;
 
-import static org.hamcrest.core.Is.is;
+import static org.hamcrest.CoreMatchers.instanceOf;
+import static org.hamcrest.MatcherAssert.assertThat;
 import static org.junit.Assert.*;
 
 public class UInt32ImageTypeSpecifierTest {
@@ -55,13 +57,13 @@ public class UInt32ImageTypeSpecifierTest {
         assertEquals(1, spec.getNumComponents());
         assertEquals(32, spec.getBitsPerBand(0));
 
-        assertThat(spec.getColorModel(), is(ComponentColorModel.class));
+        assertThat(spec.getColorModel(), instanceOf(ComponentColorModel.class));
         assertFalse(spec.getColorModel().hasAlpha());
         assertFalse(spec.getColorModel().isAlphaPremultiplied());
         assertEquals(1, spec.getColorModel().getNumComponents());
         assertEquals(1, spec.getColorModel().getNumColorComponents());
 
-        assertThat(spec.getSampleModel(), is(PixelInterleavedSampleModel.class));
+        assertThat(spec.getSampleModel(), instanceOf(PixelInterleavedSampleModel.class));
         assertEquals(1, spec.getSampleModel().getNumBands());
         assertEquals(1, spec.getSampleModel().getNumDataElements());
     }
@@ -74,13 +76,13 @@ public class UInt32ImageTypeSpecifierTest {
         assertEquals(32, spec.getBitsPerBand(0));
         assertEquals(32, spec.getBitsPerBand(1));
 
-        assertThat(spec.getColorModel(), is(ComponentColorModel.class));
+        assertThat(spec.getColorModel(), instanceOf(ComponentColorModel.class));
         assertTrue(spec.getColorModel().hasAlpha());
         assertFalse(spec.getColorModel().isAlphaPremultiplied());
         assertEquals(2, spec.getColorModel().getNumComponents());
         assertEquals(1, spec.getColorModel().getNumColorComponents());
 
-        assertThat(spec.getSampleModel(), is(PixelInterleavedSampleModel.class));
+        assertThat(spec.getSampleModel(), instanceOf(PixelInterleavedSampleModel.class));
         assertEquals(2, spec.getSampleModel().getNumBands());
         assertEquals(2, spec.getSampleModel().getNumDataElements());
     }
@@ -95,13 +97,13 @@ public class UInt32ImageTypeSpecifierTest {
         assertEquals(32, spec.getBitsPerBand(1));
         assertEquals(32, spec.getBitsPerBand(2));
 
-        assertThat(spec.getColorModel(), is(ComponentColorModel.class));
+        assertThat(spec.getColorModel(), instanceOf(ComponentColorModel.class));
         assertFalse(spec.getColorModel().hasAlpha());
         assertFalse(spec.getColorModel().isAlphaPremultiplied());
         assertEquals(3, spec.getColorModel().getNumComponents());
         assertEquals(3, spec.getColorModel().getNumColorComponents());
 
-        assertThat(spec.getSampleModel(), is(PixelInterleavedSampleModel.class));
+        assertThat(spec.getSampleModel(), instanceOf(PixelInterleavedSampleModel.class));
         assertEquals(3, spec.getSampleModel().getNumBands());
         assertEquals(3, spec.getSampleModel().getNumDataElements());
     }
@@ -116,13 +118,13 @@ public class UInt32ImageTypeSpecifierTest {
         assertEquals(32, spec.getBitsPerBand(2));
         assertEquals(32, spec.getBitsPerBand(3));
 
-        assertThat(spec.getColorModel(), is(ComponentColorModel.class));
+        assertThat(spec.getColorModel(), instanceOf(ComponentColorModel.class));
         assertTrue(spec.getColorModel().hasAlpha());
         assertFalse(spec.getColorModel().isAlphaPremultiplied());
         assertEquals(4, spec.getColorModel().getNumComponents());
         assertEquals(3, spec.getColorModel().getNumColorComponents());
 
-        assertThat(spec.getSampleModel(), is(PixelInterleavedSampleModel.class));
+        assertThat(spec.getSampleModel(), instanceOf(PixelInterleavedSampleModel.class));
         assertEquals(4, spec.getSampleModel().getNumBands());
         assertEquals(4, spec.getSampleModel().getNumDataElements());
     }
@@ -137,13 +139,13 @@ public class UInt32ImageTypeSpecifierTest {
         assertEquals(32, spec.getBitsPerBand(2));
         assertEquals(32, spec.getBitsPerBand(3));
 
-        assertThat(spec.getColorModel(), is(ComponentColorModel.class));
+        assertThat(spec.getColorModel(), instanceOf(ComponentColorModel.class));
         assertTrue(spec.getColorModel().hasAlpha());
         assertTrue(spec.getColorModel().isAlphaPremultiplied());
         assertEquals(4, spec.getColorModel().getNumComponents());
         assertEquals(3, spec.getColorModel().getNumColorComponents());
 
-        assertThat(spec.getSampleModel(), is(PixelInterleavedSampleModel.class));
+        assertThat(spec.getSampleModel(), instanceOf(PixelInterleavedSampleModel.class));
         assertEquals(4, spec.getSampleModel().getNumBands());
         assertEquals(4, spec.getSampleModel().getNumDataElements());
     }
@@ -159,13 +161,13 @@ public class UInt32ImageTypeSpecifierTest {
         assertEquals(32, spec.getBitsPerBand(2));
         assertEquals(32, spec.getBitsPerBand(3));
 
-        assertThat(spec.getColorModel(), is(ComponentColorModel.class));
+        assertThat(spec.getColorModel(), instanceOf(ComponentColorModel.class));
         assertFalse(spec.getColorModel().hasAlpha());
         assertFalse(spec.getColorModel().isAlphaPremultiplied());
         assertEquals(4, spec.getColorModel().getNumComponents());
         assertEquals(4, spec.getColorModel().getNumColorComponents());
 
-        assertThat(spec.getSampleModel(), is(PixelInterleavedSampleModel.class));
+        assertThat(spec.getSampleModel(), instanceOf(PixelInterleavedSampleModel.class));
         assertEquals(4, spec.getSampleModel().getNumBands());
         assertEquals(4, spec.getSampleModel().getNumDataElements());
     }
@@ -181,13 +183,13 @@ public class UInt32ImageTypeSpecifierTest {
         assertEquals(32, spec.getBitsPerBand(3));
         assertEquals(32, spec.getBitsPerBand(4));
 
-        assertThat(spec.getColorModel(), is(ComponentColorModel.class));
+        assertThat(spec.getColorModel(), instanceOf(ComponentColorModel.class));
         assertTrue(spec.getColorModel().hasAlpha());
         assertFalse(spec.getColorModel().isAlphaPremultiplied());
         assertEquals(5, spec.getColorModel().getNumComponents());
         assertEquals(4, spec.getColorModel().getNumColorComponents());
 
-        assertThat(spec.getSampleModel(), is(PixelInterleavedSampleModel.class));
+        assertThat(spec.getSampleModel(), instanceOf(PixelInterleavedSampleModel.class));
         assertEquals(5, spec.getSampleModel().getNumBands());
         assertEquals(5, spec.getSampleModel().getNumDataElements());
     }

imageio/imageio-hdr/pom.xml

@@ -4,7 +4,7 @@
     <parent>
         <groupId>com.twelvemonkeys.imageio</groupId>
         <artifactId>imageio</artifactId>
-        <version>3.6</version>
+        <version>3.6.2</version>
     </parent>
     <artifactId>imageio-hdr</artifactId>
     <name>TwelveMonkeys :: ImageIO :: HDR plugin</name>
@@ -21,6 +21,7 @@
             <groupId>com.twelvemonkeys.imageio</groupId>
             <artifactId>imageio-core</artifactId>
             <type>test-jar</type>
+            <scope>test</scope>
         </dependency>
         <dependency>
             <groupId>com.twelvemonkeys.imageio</groupId>

imageio/imageio-hdr/src/test/java/com/twelvemonkeys/imageio/plugins/hdr/HDRImageReaderTest.java

@@ -46,26 +46,16 @@ import java.util.List;
  * @version $Id: TGAImageReaderTest.java,v 1.0 03.07.14 22:28 haraldk Exp$
  */
 public class HDRImageReaderTest extends ImageReaderAbstractTest<HDRImageReader> {
-    @Override
-    protected List<TestData> getTestData() {
-        return Arrays.asList(
-                new TestData(getClassLoaderResource("/hdr/memorial_o876.hdr"), new Dimension(512, 768))
-        );
-    }
-
     @Override
     protected ImageReaderSpi createProvider() {
         return new HDRImageReaderSpi();
     }
 
     @Override
-    protected Class<HDRImageReader> getReaderClass() {
-        return HDRImageReader.class;
-    }
-
-    @Override
-    protected HDRImageReader createReader() {
-        return new HDRImageReader(createProvider());
+    protected List<TestData> getTestData() {
+        return Collections.singletonList(
+                new TestData(getClassLoaderResource("/hdr/memorial_o876.hdr"), new Dimension(512, 768))
+        );
     }
 
     @Override

imageio/imageio-hdr/src/test/java/com/twelvemonkeys/imageio/plugins/hdr/tonemap/DefaultToneMapperTest.java

@@ -0,0 +1,31 @@
+package com.twelvemonkeys.imageio.plugins.hdr.tonemap;
+
+import org.junit.Test;
+
+import static org.junit.Assert.assertArrayEquals;
+
+public class DefaultToneMapperTest {
+
+    private final DefaultToneMapper mapper = new DefaultToneMapper();
+
+    @Test
+    public void testMap0() {
+        float[] rgb = {0};
+        mapper.map(rgb);
+        assertArrayEquals(new float[]{0}, rgb, 0);
+    }
+
+    @Test
+    public void testMap1() {
+        float[] rgb = {1};
+        mapper.map(rgb);
+        assertArrayEquals(new float[]{0.5f}, rgb, 0);
+    }
+
+    @Test
+    public void testMapMax() {
+        float[] rgb = {Float.MAX_VALUE};
+        mapper.map(rgb);
+        assertArrayEquals(new float[]{1}, rgb, 0);
+    }
+}

imageio/imageio-hdr/src/test/java/com/twelvemonkeys/imageio/plugins/hdr/tonemap/GammaToneMapperTest.java

@@ -0,0 +1,38 @@
+package com.twelvemonkeys.imageio.plugins.hdr.tonemap;
+
+import org.junit.Test;
+
+import static org.junit.Assert.assertArrayEquals;
+
+public class GammaToneMapperTest {
+    private final GammaToneMapper mapper = new GammaToneMapper();
+
+    @Test
+    public void testMap0() {
+        float[] rgb = {0};
+        mapper.map(rgb);
+        assertArrayEquals(new float[]{0}, rgb, 0);
+    }
+
+    @Test
+    public void testMap1() {
+        float[] rgb = {1};
+        mapper.map(rgb);
+        assertArrayEquals(new float[]{0.5f}, rgb, 0);
+    }
+
+    @Test
+    public void testMap16() {
+        float[] rgb = {15.999999f};
+        mapper.map(rgb);
+        assertArrayEquals(new float[]{1}, rgb, 0);
+    }
+
+    @Test
+    public void testMapMax() {
+        float[] rgb = {Float.MAX_VALUE};
+        mapper.map(rgb);
+        assertArrayEquals(new float[]{1}, rgb, 0);
+    }
+
+}

imageio/imageio-hdr/src/test/java/com/twelvemonkeys/imageio/plugins/hdr/tonemap/NullToneMapperTest.java

@@ -0,0 +1,31 @@
+package com.twelvemonkeys.imageio.plugins.hdr.tonemap;
+
+import org.junit.Test;
+
+import static org.junit.Assert.assertArrayEquals;
+
+public class NullToneMapperTest {
+    private final NullToneMapper mapper = new NullToneMapper();
+
+    @Test
+    public void testMap0() {
+        float[] rgb = {0};
+        mapper.map(rgb);
+        assertArrayEquals(new float[]{0}, rgb, 0);
+    }
+
+    @Test
+    public void testMap1() {
+        float[] rgb = {1};
+        mapper.map(rgb);
+        assertArrayEquals(new float[]{1}, rgb, 0);
+    }
+
+    @Test
+    public void testMapMax() {
+        float[] rgb = {Float.MAX_VALUE};
+        mapper.map(rgb);
+        assertArrayEquals(new float[]{Float.MAX_VALUE}, rgb, 0);
+    }
+
+}

imageio/imageio-icns/pom.xml

@@ -4,7 +4,7 @@
     <parent>
         <groupId>com.twelvemonkeys.imageio</groupId>
         <artifactId>imageio</artifactId>
-        <version>3.6</version>
+        <version>3.6.2</version>
     </parent>
     <artifactId>imageio-icns</artifactId>
     <name>TwelveMonkeys :: ImageIO :: ICNS plugin</name>
@@ -19,6 +19,7 @@
             <groupId>com.twelvemonkeys.imageio</groupId>
             <artifactId>imageio-core</artifactId>
             <type>test-jar</type>
+            <scope>test</scope>
         </dependency>
     </dependencies>
 </project>

imageio/imageio-icns/src/test/java/com/twelvemonkeys/imageio/plugins/icns/ICNSImageReaderTest.java

@@ -31,10 +31,10 @@
 package com.twelvemonkeys.imageio.plugins.icns;
 
 import com.twelvemonkeys.imageio.util.ImageReaderAbstractTest;
+
 import org.junit.Ignore;
 import org.junit.Test;
 
-import javax.imageio.ImageReader;
 import javax.imageio.spi.ImageReaderSpi;
 import java.awt.*;
 import java.io.IOException;
@@ -49,7 +49,12 @@ import java.util.List;
  * @author last modified by $Author: haraldk$
  * @version $Id: ICNSImageReaderTest.java,v 1.0 25.10.11 18:44 haraldk Exp$
  */
-public class ICNSImageReaderTest extends ImageReaderAbstractTest {
+public class ICNSImageReaderTest extends ImageReaderAbstractTest<ICNSImageReader> {
+    @Override
+    protected ImageReaderSpi createProvider() {
+        return new ICNSImageReaderSpi();
+    }
+
     @Override
     protected List<TestData> getTestData() {
         return Arrays.asList(
@@ -105,21 +110,6 @@ public class ICNSImageReaderTest extends ImageReaderAbstractTest {
         );
     }
 
-    @Override
-    protected ImageReaderSpi createProvider() {
-        return new ICNSImageReaderSpi();
-    }
-
-    @Override
-    protected ImageReader createReader() {
-        return new ICNSImageReader();
-    }
-
-    @Override
-    protected Class getReaderClass() {
-        return ICNSImageReader.class;
-    }
-
     @Override
     protected List<String> getFormatNames() {
         return Collections.singletonList("icns");

imageio/imageio-icns/src/test/java/com/twelvemonkeys/imageio/plugins/icns/ICNSImageWriterTest.java

@@ -31,11 +31,13 @@
 package com.twelvemonkeys.imageio.plugins.icns;
 
 import com.twelvemonkeys.imageio.util.ImageWriterAbstractTest;
+
 import org.junit.Test;
 
 import javax.imageio.IIOImage;
 import javax.imageio.ImageIO;
 import javax.imageio.ImageWriter;
+import javax.imageio.spi.ImageWriterSpi;
 import javax.imageio.stream.ImageOutputStream;
 import java.awt.image.BufferedImage;
 import java.awt.image.RenderedImage;
@@ -53,13 +55,11 @@ import static org.junit.Assert.assertTrue;
  * @author last modified by $Author: harald.kuhr$
  * @version $Id: ICNSImageWriterTest.java,v 1.0 25/08/2018 harald.kuhr Exp$
  */
-public class ICNSImageWriterTest extends ImageWriterAbstractTest {
-
-    private final ICNSImageWriterSpi provider = new ICNSImageWriterSpi();
+public class ICNSImageWriterTest extends ImageWriterAbstractTest<ICNSImageWriter> {
 
     @Override
-    protected ImageWriter createImageWriter() {
-        return provider.createWriterInstance(null);
+    protected ImageWriterSpi createProvider() {
+        return new ICNSImageWriterSpi();
     }
 
     @Override
@@ -81,7 +81,7 @@ public class ICNSImageWriterTest extends ImageWriterAbstractTest {
     @Test(expected = IllegalArgumentException.class)
     public void testWriteNonSquare() throws IOException {
         // ICNS only supports square icons (except some arcane 16x12 we don't currently support)
-        ImageWriter writer = createImageWriter();
+        ImageWriter writer = createWriter();
         try (ImageOutputStream stream = ImageIO.createImageOutputStream(new ByteArrayOutputStream())) {
 
             writer.setOutput(stream);
@@ -97,7 +97,7 @@ public class ICNSImageWriterTest extends ImageWriterAbstractTest {
     @Test(expected = IllegalArgumentException.class)
     public void testWriteBadSize() throws IOException {
         // ICNS only supports sizes in multiples of 2 (16, 32, 64, ..., 1024 + 48 and 96)
-        ImageWriter writer = createImageWriter();
+        ImageWriter writer = createWriter();
         try (ImageOutputStream stream = ImageIO.createImageOutputStream(new ByteArrayOutputStream())) {
 
             writer.setOutput(stream);
@@ -111,8 +111,8 @@ public class ICNSImageWriterTest extends ImageWriterAbstractTest {
     }
 
     @Test
-    public void testSequencesSupported() {
-        ImageWriter writer = createImageWriter();
+    public void testSequencesSupported() throws IOException {
+        ImageWriter writer = createWriter();
         try {
             assertTrue(writer.canWriteSequence());
         }
@@ -124,7 +124,7 @@ public class ICNSImageWriterTest extends ImageWriterAbstractTest {
     @Test(expected = IllegalStateException.class)
     public void testWriteSequenceNotStarted() throws IOException {
         // ICNS only supports sizes in multiples of 2 (16, 32, 64, ..., 1024 + 48 and 96)
-        ImageWriter writer = createImageWriter();
+        ImageWriter writer = createWriter();
         try (ImageOutputStream stream = ImageIO.createImageOutputStream(new ByteArrayOutputStream())) {
 
             writer.setOutput(stream);
@@ -141,7 +141,7 @@ public class ICNSImageWriterTest extends ImageWriterAbstractTest {
     @Test(expected = IllegalStateException.class)
     public void testEndSequenceNotStarted() throws IOException {
         // ICNS only supports sizes in multiples of 2 (16, 32, 64, ..., 1024 + 48 and 96)
-        ImageWriter writer = createImageWriter();
+        ImageWriter writer = createWriter();
         try (ImageOutputStream stream = ImageIO.createImageOutputStream(new ByteArrayOutputStream())) {
 
             writer.setOutput(stream);
@@ -155,7 +155,7 @@ public class ICNSImageWriterTest extends ImageWriterAbstractTest {
     @Test(expected = IllegalStateException.class)
     public void testPrepareSequenceAlreadyStarted() throws IOException {
         // ICNS only supports sizes in multiples of 2 (16, 32, 64, ..., 1024 + 48 and 96)
-        ImageWriter writer = createImageWriter();
+        ImageWriter writer = createWriter();
         try (ImageOutputStream stream = ImageIO.createImageOutputStream(new ByteArrayOutputStream())) {
 
             writer.setOutput(stream);
@@ -169,7 +169,7 @@ public class ICNSImageWriterTest extends ImageWriterAbstractTest {
 
     @Test
     public void testWriteSequence() throws IOException {
-        ImageWriter writer = createImageWriter();
+        ImageWriter writer = createWriter();
         ByteArrayOutputStream output = new ByteArrayOutputStream();
 
         try (ImageOutputStream stream = ImageIO.createImageOutputStream(output)) {

imageio/imageio-iff/pom.xml

@@ -4,7 +4,7 @@
     <parent>
         <groupId>com.twelvemonkeys.imageio</groupId>
         <artifactId>imageio</artifactId>
-        <version>3.6</version>
+        <version>3.6.2</version>
     </parent>
     <artifactId>imageio-iff</artifactId>
     <name>TwelveMonkeys :: ImageIO :: IFF plugin</name>
@@ -22,6 +22,7 @@
             <groupId>com.twelvemonkeys.imageio</groupId>
             <artifactId>imageio-core</artifactId>
             <type>test-jar</type>
+            <scope>test</scope>
         </dependency>
     </dependencies>
 </project>

imageio/imageio-iff/src/test/java/com/twelvemonkeys/imageio/plugins/iff/IFFImageReaderTest.java

@@ -31,6 +31,7 @@
 package com.twelvemonkeys.imageio.plugins.iff;
 
 import com.twelvemonkeys.imageio.util.ImageReaderAbstractTest;
+
 import org.junit.Test;
 
 import javax.imageio.ImageIO;
@@ -54,6 +55,12 @@ import static org.junit.Assert.*;
  * @version $Id: IFFImageReaderTestCase.java,v 1.0 Apr 1, 2008 10:39:17 PM haraldk Exp$
  */
 public class IFFImageReaderTest extends ImageReaderAbstractTest<IFFImageReader> {
+    @Override
+    protected ImageReaderSpi createProvider() {
+        return new IFFImageReaderSpi();
+    }
+
+    @Override
     protected List<TestData> getTestData() {
         return Arrays.asList(
                 // 32 bit - Ok
@@ -85,22 +92,17 @@ public class IFFImageReaderTest extends ImageReaderAbstractTest<IFFImageReader>
         );
     }
 
-    protected ImageReaderSpi createProvider() {
-        return new IFFImageReaderSpi();
-    }
-
-    protected Class<IFFImageReader> getReaderClass() {
-        return IFFImageReader.class;
-    }
-
+    @Override
     protected List<String> getFormatNames() {
         return Collections.singletonList("iff");
     }
 
+    @Override
     protected List<String> getSuffixes() {
         return Arrays.asList("iff", "ilbm", "ham", "ham8", "lbm");
     }
 
+    @Override
     protected List<String> getMIMETypes() {
         return Arrays.asList("image/iff", "image/x-iff");
     }

imageio/imageio-iff/src/test/java/com/twelvemonkeys/imageio/plugins/iff/IFFImageWriterTest.java

@@ -32,10 +32,12 @@ package com.twelvemonkeys.imageio.plugins.iff;
 
 import com.twelvemonkeys.image.MonochromeColorModel;
 import com.twelvemonkeys.imageio.util.ImageWriterAbstractTest;
+
 import org.junit.Test;
 
 import javax.imageio.ImageIO;
 import javax.imageio.ImageWriter;
+import javax.imageio.spi.ImageWriterSpi;
 import javax.imageio.stream.ImageInputStream;
 import javax.imageio.stream.ImageOutputStream;
 import java.awt.color.ColorSpace;
@@ -56,12 +58,10 @@ import static org.junit.Assert.*;
  * @author last modified by $Author: haraldk$
  * @version $Id: JPEG2000ImageWriterTest.java,v 1.0 20.01.12 12:19 haraldk Exp$
  */
-public class IFFImageWriterTest extends ImageWriterAbstractTest {
-    private final IFFImageWriterSpi provider = new IFFImageWriterSpi();
-
+public class IFFImageWriterTest extends ImageWriterAbstractTest<IFFImageWriter> {
     @Override
-    protected ImageWriter createImageWriter() {
-        return new IFFImageWriter(provider);
+    protected ImageWriterSpi createProvider() {
+        return new IFFImageWriterSpi();
     }
 
     @Override
@@ -81,7 +81,7 @@ public class IFFImageWriterTest extends ImageWriterAbstractTest {
 
     @Test
     public void testWriteReadCompare() throws IOException {
-        ImageWriter writer = createImageWriter();
+        ImageWriter writer = createWriter();
 
         List<? extends RenderedImage> testData = getTestData();
 
@@ -116,9 +116,7 @@ public class IFFImageWriterTest extends ImageWriterAbstractTest {
                 assertSameData(original, written);
             }
             catch (IOException e) {
-                AssertionError fail = new AssertionError("Failure writing test data " + i + " " + e);
-                fail.initCause(e);
-                throw fail;
+                throw new AssertionError("Failure writing test data " + i + " " + e, e);
             }
         }
     }

imageio/imageio-jpeg/pom.xml

@@ -4,7 +4,7 @@
     <parent>
         <groupId>com.twelvemonkeys.imageio</groupId>
         <artifactId>imageio</artifactId>
-        <version>3.6</version>
+        <version>3.6.2</version>
     </parent>
     <artifactId>imageio-jpeg</artifactId>
     <name>TwelveMonkeys :: ImageIO :: JPEG plugin</name>
@@ -21,6 +21,7 @@
             <groupId>com.twelvemonkeys.imageio</groupId>
             <artifactId>imageio-core</artifactId>
             <type>test-jar</type>
+            <scope>test</scope>
         </dependency>
         <dependency>
             <groupId>com.twelvemonkeys.imageio</groupId>

imageio/imageio-jpeg/src/main/java/com/twelvemonkeys/imageio/plugins/jpeg/JPEGImageReader.java

@@ -30,6 +30,37 @@
 
 package com.twelvemonkeys.imageio.plugins.jpeg;
 
+import java.awt.*;
+import java.awt.color.ColorSpace;
+import java.awt.color.ICC_ColorSpace;
+import java.awt.color.ICC_Profile;
+import java.awt.image.*;
+import java.io.DataInput;
+import java.io.DataInputStream;
+import java.io.EOFException;
+import java.io.File;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.SequenceInputStream;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.Iterator;
+import java.util.List;
+
+import javax.imageio.IIOException;
+import javax.imageio.ImageIO;
+import javax.imageio.ImageReadParam;
+import javax.imageio.ImageReader;
+import javax.imageio.ImageTypeSpecifier;
+import javax.imageio.event.IIOReadUpdateListener;
+import javax.imageio.event.IIOReadWarningListener;
+import javax.imageio.metadata.IIOMetadata;
+import javax.imageio.metadata.IIOMetadataFormatImpl;
+import javax.imageio.metadata.IIOMetadataNode;
+import javax.imageio.spi.ImageReaderSpi;
+import javax.imageio.stream.ImageInputStream;
+
 import com.twelvemonkeys.imageio.ImageReaderBase;
 import com.twelvemonkeys.imageio.color.ColorSpaces;
 import com.twelvemonkeys.imageio.color.YCbCrConverter;
@@ -49,24 +80,6 @@ import com.twelvemonkeys.imageio.util.ProgressListenerBase;
 import com.twelvemonkeys.lang.Validate;
 import com.twelvemonkeys.xml.XMLSerializer;
 
-import javax.imageio.*;
-import javax.imageio.event.IIOReadUpdateListener;
-import javax.imageio.event.IIOReadWarningListener;
-import javax.imageio.metadata.IIOMetadata;
-import javax.imageio.metadata.IIOMetadataFormatImpl;
-import javax.imageio.metadata.IIOMetadataNode;
-import javax.imageio.spi.ImageReaderSpi;
-import javax.imageio.stream.ImageInputStream;
-import javax.imageio.stream.MemoryCacheImageInputStream;
-import java.awt.*;
-import java.awt.color.ColorSpace;
-import java.awt.color.ICC_ColorSpace;
-import java.awt.color.ICC_Profile;
-import java.awt.image.*;
-import java.io.*;
-import java.util.List;
-import java.util.*;
-
 /**
  * A JPEG {@code ImageReader} implementation based on the JRE {@code JPEGImageReader},
  * that adds support and properly handles cases where the JRE version throws exceptions.
@@ -123,8 +136,6 @@ public final class JPEGImageReader extends ImageReaderBase {
     private ImageReader thumbnailReader;
     private List<ThumbnailReader> thumbnails;
 
-    private JPEGImage10MetadataCleaner metadataCleaner;
-
     /** Cached list of JPEG segments we filter from the underlying stream */
     private List<Segment> segments;
 
@@ -158,8 +169,6 @@ public final class JPEGImageReader extends ImageReaderBase {
             thumbnailReader.reset();
         }
 
-        metadataCleaner = null;
-
         installListeners();
     }
 
@@ -469,15 +478,12 @@ public final class JPEGImageReader extends ImageReaderBase {
         }
 
         // We'll need a read param
-        Rectangle origSourceRegion;
         if (param == null) {
             param = delegate.getDefaultReadParam();
-            origSourceRegion = null;
-        }
-        else {
-            origSourceRegion = param.getSourceRegion();
         }
 
+        Rectangle origSourceRegion = param.getSourceRegion();
+
         Rectangle srcRegion = new Rectangle();
         Rectangle dstRegion = new Rectangle();
         computeRegions(param, origWidth, origHeight, image, srcRegion, dstRegion);
@@ -903,16 +909,16 @@ public final class JPEGImageReader extends ImageReaderBase {
 
         if (!exifSegments.isEmpty()) {
             Application exif = exifSegments.get(0);
-            InputStream data = exif.data();
+            int offset = exif.identifier.length() + 2; // Incl. pad
 
-            if (data.read() == -1) { // Read pad
+            if (exif.data.length <= offset) {
                 processWarningOccurred("Exif chunk has no data.");
             }
             else {
-                ImageInputStream stream = new MemoryCacheImageInputStream(data);
-                return (CompoundDirectory) new TIFFReader().read(stream);
-
-                // TODO: Directory offset of thumbnail is wrong/relative to container stream, causing trouble for the TIFFReader...
+                // TODO: Consider returning ByteArrayImageInputStream from Segment.data()
+                try (ImageInputStream stream = new ByteArrayImageInputStream(exif.data, offset, exif.data.length - offset)) {
+                    return (CompoundDirectory) new TIFFReader().read(stream);
+                }
             }
         }
 
@@ -1123,13 +1129,13 @@ public final class JPEGImageReader extends ImageReaderBase {
                 Application exif = exifSegments.get(0);
 
                 // Identifier is "Exif\0" + 1 byte pad
-                int offset = exif.identifier.length() + 2;
+                int dataOffset = exif.identifier.length() + 2;
 
-                if (exif.data.length <= offset) {
+                if (exif.data.length <= dataOffset) {
                     processWarningOccurred("Exif chunk has no data.");
                 }
                 else {
-                    ImageInputStream stream = new ByteArrayImageInputStream(exif.data, offset, exif.data.length - offset);
+                    ImageInputStream stream = new ByteArrayImageInputStream(exif.data, dataOffset, exif.data.length - dataOffset);
                     CompoundDirectory exifMetadata = (CompoundDirectory) new TIFFReader().read(stream);
 
                     if (exifMetadata.directoryCount() == 2) {
@@ -1140,14 +1146,18 @@ public final class JPEGImageReader extends ImageReaderBase {
                         int compression = compressionEntry == null ? 6 : ((Number) compressionEntry.getValue()).intValue();
 
                         if (compression == 6) {
-                            if (ifd1.getEntryById(TIFF.TAG_JPEG_INTERCHANGE_FORMAT) != null) {
-                                Entry jpegLength = ifd1.getEntryById(TIFF.TAG_JPEG_INTERCHANGE_FORMAT_LENGTH);
+                            Entry jpegOffEntry = ifd1.getEntryById(TIFF.TAG_JPEG_INTERCHANGE_FORMAT);
+                            if (jpegOffEntry != null) {
+                                Entry jpegLenEntry = ifd1.getEntryById(TIFF.TAG_JPEG_INTERCHANGE_FORMAT_LENGTH);
 
-                                if ((jpegLength == null || ((Number) jpegLength.getValue()).longValue() > 0)) {
+                                // Test if Exif thumbnail is contained within the Exif segment (offset + length <= segment.length)
+                                long jpegOffset = ((Number) jpegOffEntry.getValue()).longValue();
+                                long jpegLength = jpegLenEntry != null ? ((Number) jpegLenEntry.getValue()).longValue() : -1;
+                                if (jpegLength > 0 && jpegOffset + jpegLength <= stream.length()) {
                                     thumbnails.add(new EXIFThumbnailReader(thumbnailProgressDelegator, getThumbnailReader(), 0, thumbnails.size(), ifd1, stream));
                                 }
                                 else {
-                                    processWarningOccurred("EXIF IFD with empty (zero-length) thumbnail");
+                                    processWarningOccurred("EXIF IFD with empty or incomplete JPEG thumbnail");
                                 }
                             }
                             else {

imageio/imageio-jpeg/src/test/java/com/twelvemonkeys/imageio/plugins/jpeg/JPEGImageReaderTest.java

@@ -32,6 +32,7 @@ package com.twelvemonkeys.imageio.plugins.jpeg;
 
 import com.twelvemonkeys.imageio.util.ImageReaderAbstractTest;
 import com.twelvemonkeys.lang.StringUtil;
+
 import org.hamcrest.core.IsInstanceOf;
 import org.junit.Test;
 import org.mockito.internal.matchers.GreaterThan;
@@ -60,6 +61,7 @@ import java.util.List;
 import java.util.*;
 
 import static com.twelvemonkeys.imageio.util.IIOUtil.lookupProviderByName;
+import static org.hamcrest.MatcherAssert.assertThat;
 import static org.junit.Assert.*;
 import static org.junit.Assume.assumeNoException;
 import static org.junit.Assume.assumeNotNull;
@@ -77,7 +79,10 @@ import static org.mockito.Mockito.*;
  */
 public class JPEGImageReaderTest extends ImageReaderAbstractTest<JPEGImageReader> {
 
-    private static final JPEGImageReaderSpi SPI = new JPEGImageReaderSpi(lookupDelegateProvider());
+    @Override
+    protected ImageReaderSpi createProvider() {
+        return new JPEGImageReaderSpi(lookupDelegateProvider());
+    }
 
     private static ImageReaderSpi lookupDelegateProvider() {
         return lookupProviderByName(IIORegistry.getDefaultInstance(), "com.sun.imageio.plugins.jpeg.JPEGImageReaderSpi", ImageReaderSpi.class);
@@ -133,26 +138,6 @@ public class JPEGImageReaderTest extends ImageReaderAbstractTest<JPEGImageReader
         // More test data in specific tests below
     }
 
-    @Override
-    protected ImageReaderSpi createProvider() {
-        return SPI;
-    }
-
-    @Override
-    protected JPEGImageReader createReader() {
-        try {
-            return (JPEGImageReader) SPI.createReaderInstance();
-        }
-        catch (IOException e) {
-            throw new RuntimeException(e);
-        }
-    }
-
-    @Override
-    protected Class<JPEGImageReader> getReaderClass() {
-        return JPEGImageReader.class;
-    }
-
     @Override
     protected boolean allowsNullRawImageType() {
         return true;
@@ -205,7 +190,7 @@ public class JPEGImageReaderTest extends ImageReaderAbstractTest<JPEGImageReader
         }
     }
 
-    private static void assertJPEGPixelsEqual(byte[] expected, byte[] actual, int actualOffset) {
+    private static void assertJPEGPixelsEqual(byte[] expected, byte[] actual, @SuppressWarnings("SameParameterValue") int actualOffset) {
         for (int i = 0; i < expected.length; i++) {
             assertEquals(String.format("Difference in pixel %d", i), expected[i], actual[i + actualOffset], 5);
         }
@@ -550,7 +535,7 @@ public class JPEGImageReaderTest extends ImageReaderAbstractTest<JPEGImageReader
     }
 
     @Test
-    public void testBrokenReadRasterAfterGetMetadataException() {
+    public void testBrokenReadRasterAfterGetMetadataException() throws IOException {
         // See issue #107, from PDFBox team
         JPEGImageReader reader = createReader();
 
@@ -585,7 +570,6 @@ public class JPEGImageReaderTest extends ImageReaderAbstractTest<JPEGImageReader
     public void testSPIRecognizesBrokenJPEG() throws IOException {
         // TODO: There's a bug in com.sun.imageio.plugins.png.PNGImageReaderSpi.canDecode
         // causing files < 8 bytes to not be recognized as anything...
-        ImageReaderSpi provider = createProvider();
         for (TestData data : getBrokenTestData()) {
             assertTrue(data.toString(), provider.canDecodeInput(data.getInputStream()));
         }
@@ -594,7 +578,7 @@ public class JPEGImageReaderTest extends ImageReaderAbstractTest<JPEGImageReader
     // TODO: Consider wrapping the delegate in JPEGImageReader with methods that don't throw
     // runtime exceptions, and instead throw IIOException?
     @Test
-    public void testBrokenGetRawImageType() {
+    public void testBrokenGetRawImageType() throws IOException {
         JPEGImageReader reader = createReader();
 
         try {
@@ -620,7 +604,7 @@ public class JPEGImageReaderTest extends ImageReaderAbstractTest<JPEGImageReader
     }
 
     @Test(timeout = 200)
-    public void testBrokenGetRawImageTypeIgnoreMetadata() {
+    public void testBrokenGetRawImageTypeIgnoreMetadata() throws IOException {
         JPEGImageReader reader = createReader();
 
         try {
@@ -646,7 +630,7 @@ public class JPEGImageReaderTest extends ImageReaderAbstractTest<JPEGImageReader
     }
 
     @Test
-    public void testBrokenGetImageTypes() {
+    public void testBrokenGetImageTypes() throws IOException {
         JPEGImageReader reader = createReader();
 
         try {
@@ -672,7 +656,7 @@ public class JPEGImageReaderTest extends ImageReaderAbstractTest<JPEGImageReader
     }
 
     @Test(timeout = 200)
-    public void testBrokenGetImageTypesIgnoreMetadata() {
+    public void testBrokenGetImageTypesIgnoreMetadata() throws IOException {
         JPEGImageReader reader = createReader();
 
         try {
@@ -698,7 +682,7 @@ public class JPEGImageReaderTest extends ImageReaderAbstractTest<JPEGImageReader
     }
 
     @Test
-    public void testBrokenRead() {
+    public void testBrokenRead() throws IOException {
         JPEGImageReader reader = createReader();
 
         try {
@@ -724,7 +708,7 @@ public class JPEGImageReaderTest extends ImageReaderAbstractTest<JPEGImageReader
     }
 
     @Test
-    public void testBrokenGetDimensions() {
+    public void testBrokenGetDimensions() throws IOException {
         JPEGImageReader reader = createReader();
 
         try {
@@ -753,7 +737,7 @@ public class JPEGImageReaderTest extends ImageReaderAbstractTest<JPEGImageReader
     }
 
     @Test
-    public void testBrokenGetImageMetadata() {
+    public void testBrokenGetImageMetadata() throws IOException {
         JPEGImageReader reader = createReader();
 
         try {
@@ -1504,9 +1488,9 @@ public class JPEGImageReaderTest extends ImageReaderAbstractTest<JPEGImageReader
                         throw new AssertionError(String.format("Reading metadata failed for %s image %s: %s", testData, i, e.getMessage()), e);
                     }
                 }
-                catch (IIOException ignore) {
+                catch (IIOException warn) {
                     // The reference reader will fail on certain images, we'll just ignore that
-                    System.err.println(String.format("WARNING: Reading reference metadata failed for %s image %s: %s", testData, i, ignore.getMessage()));
+                    System.err.printf("WARNING: Reading reference metadata failed for %s image %s: %s%n", testData, i, warn.getMessage());
                 }
             }
         }

imageio/imageio-jpeg/src/test/java/com/twelvemonkeys/imageio/plugins/jpeg/JPEGImageWriterTest.java

@@ -33,6 +33,7 @@ package com.twelvemonkeys.imageio.plugins.jpeg;
 import com.twelvemonkeys.imageio.stream.ByteArrayImageInputStream;
 import com.twelvemonkeys.imageio.util.IIOUtil;
 import com.twelvemonkeys.imageio.util.ImageWriterAbstractTest;
+
 import org.junit.Test;
 import org.w3c.dom.NodeList;
 
@@ -47,17 +48,23 @@ import javax.imageio.stream.ImageOutputStream;
 import javax.imageio.stream.MemoryCacheImageOutputStream;
 import java.awt.*;
 import java.awt.color.ColorSpace;
+import java.awt.color.ICC_Profile;
 import java.awt.image.BufferedImage;
+import java.awt.image.ComponentColorModel;
+import java.awt.image.DataBuffer;
 import java.awt.image.RenderedImage;
 import java.io.ByteArrayOutputStream;
 import java.io.IOException;
 import java.net.URL;
+import java.nio.charset.StandardCharsets;
 import java.util.Arrays;
 import java.util.Iterator;
 import java.util.List;
 
 import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertNotNull;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.when;
 
 /**
  * JPEGImageWriterTest
@@ -66,22 +73,14 @@ import static org.junit.Assert.assertNotNull;
  * @author last modified by $Author: haraldk$
  * @version $Id: JPEGImageWriterTest.java,v 1.0 06.02.12 17:05 haraldk Exp$
  */
-public class JPEGImageWriterTest extends ImageWriterAbstractTest {
-
-    private static final JPEGImageWriterSpi SPI = new JPEGImageWriterSpi(lookupDelegateProvider());
-
+public class JPEGImageWriterTest extends ImageWriterAbstractTest<JPEGImageWriter> {
     private static ImageWriterSpi lookupDelegateProvider() {
         return IIOUtil.lookupProviderByName(IIORegistry.getDefaultInstance(), "com.sun.imageio.plugins.jpeg.JPEGImageWriterSpi", ImageWriterSpi.class);
     }
 
     @Override
-    protected ImageWriter createImageWriter() {
-        try {
-            return SPI.createWriterInstance();
-        }
-        catch (IOException e) {
-            throw new RuntimeException(e);
-        }
+    protected ImageWriterSpi createProvider() {
+        return new JPEGImageWriterSpi(lookupDelegateProvider());
     }
 
     @Override
@@ -97,14 +96,18 @@ public class JPEGImageWriterTest extends ImageWriterAbstractTest {
     }
 
     @Test
-    public void testReaderForWriter() {
-        ImageWriter writer = createImageWriter();
+    public void testReaderForWriter() throws IOException {
+        ImageWriter writer = createWriter();
         ImageReader reader = ImageIO.getImageReader(writer);
         assertNotNull(reader);
         assertEquals(writer.getClass().getPackage(), reader.getClass().getPackage());
     }
 
     private ByteArrayOutputStream transcode(final ImageReader reader, final URL resource, final ImageWriter writer, int outCSType) throws IOException {
+        return transcode(reader, resource, writer, outCSType, true);
+    }
+
+    private ByteArrayOutputStream transcode(final ImageReader reader, final URL resource, final ImageWriter writer, int outCSType, boolean embedICCProfile) throws IOException {
         try (ImageInputStream input = ImageIO.createImageInputStream(resource)) {
             reader.setInput(input);
             ImageTypeSpecifier specifier = null;
@@ -125,6 +128,14 @@ public class JPEGImageWriterTest extends ImageWriterAbstractTest {
             readParam.setDestinationType(specifier);
             IIOImage image = reader.readAll(0, readParam);
 
+            if (!embedICCProfile) {
+                // Get rid of the color model/icc profile
+                ColorSpace fakeCS = mock(ColorSpace.class);
+                when(fakeCS.getType()).thenReturn(ColorSpace.TYPE_CMYK);
+                when(fakeCS.getNumComponents()).thenReturn(4);
+                specifier = new ImageTypeSpecifier(new ComponentColorModel(fakeCS, false, false, Transparency.OPAQUE, DataBuffer.TYPE_BYTE), image.getRenderedImage().getSampleModel());
+            }
+
             // Write it back
             ByteArrayOutputStream bytes = new ByteArrayOutputStream(1024);
             try (ImageOutputStream output = new MemoryCacheImageOutputStream(bytes)) {
@@ -140,7 +151,7 @@ public class JPEGImageWriterTest extends ImageWriterAbstractTest {
 
     @Test
     public void testTranscodeWithMetadataRGBtoRGB() throws IOException {
-        ImageWriter writer = createImageWriter();
+        ImageWriter writer = createWriter();
         ImageReader reader = ImageIO.getImageReader(writer);
 
         ByteArrayOutputStream stream = transcode(reader, getClassLoaderResource("/jpeg/jfif-jfxx-thumbnail-olympus-d320l.jpg"), writer, ColorSpace.TYPE_RGB);
@@ -151,11 +162,18 @@ public class JPEGImageWriterTest extends ImageWriterAbstractTest {
         reader.setInput(new ByteArrayImageInputStream(stream.toByteArray()));
         BufferedImage image = reader.read(0);
         assertNotNull(image);
+
+        // Test color space type RGB (encoded as YCbCr) in standard metadata
+        IIOMetadata metadata = reader.getImageMetadata(0);
+        IIOMetadataNode standard = (IIOMetadataNode) metadata.getAsTree(IIOMetadataFormatImpl.standardMetadataFormatName);
+        NodeList colorSpaceType = standard.getElementsByTagName("ColorSpaceType");
+        assertEquals(1, colorSpaceType.getLength());
+        assertEquals("YCbCr", ((IIOMetadataNode) colorSpaceType.item(0)).getAttribute("name"));
     }
 
     @Test
     public void testTranscodeWithMetadataCMYKtoCMYK() throws IOException {
-        ImageWriter writer = createImageWriter();
+        ImageWriter writer = createWriter();
         ImageReader reader = ImageIO.getImageReader(writer);
 
         ByteArrayOutputStream stream = transcode(reader, getClassLoaderResource("/jpeg/cmyk-sample-multiple-chunk-icc.jpg"), writer, ColorSpace.TYPE_CMYK);
@@ -168,11 +186,65 @@ public class JPEGImageWriterTest extends ImageWriterAbstractTest {
         assertEquals(100, image.getWidth());
         assertEquals(100, image.getHeight());
 
+        // Test color space type CMYK in standard metadata
         IIOMetadata metadata = reader.getImageMetadata(0);
         IIOMetadataNode standard = (IIOMetadataNode) metadata.getAsTree(IIOMetadataFormatImpl.standardMetadataFormatName);
         NodeList colorSpaceType = standard.getElementsByTagName("ColorSpaceType");
         assertEquals(1, colorSpaceType.getLength());
         assertEquals("CMYK", ((IIOMetadataNode) colorSpaceType.item(0)).getAttribute("name"));
+
+        // Test APP2/ICC_PROFILE segments form native metadata
+        IIOMetadataNode nativeMeta = (IIOMetadataNode) metadata.getAsTree(JPEGImage10Metadata.JAVAX_IMAGEIO_JPEG_IMAGE_1_0);
+        NodeList unknown = nativeMeta.getElementsByTagName("unknown");
+        assertEquals(11, unknown.getLength()); // We write longer segments than the original, so we get less segments
+
+        ByteArrayOutputStream iccSegments = new ByteArrayOutputStream(1024 * 1024);
+
+        for (int i = 0; i < unknown.getLength(); i++) {
+            IIOMetadataNode node = (IIOMetadataNode) unknown.item(i);
+            byte[] data = (byte[]) node.getUserObject();
+
+            // 226 -> E2, FFE2 -> APP2 marker, ICC_PROFILE
+            String markerId = "ICC_PROFILE";
+            if (node.getAttribute("MarkerTag").equals("226")
+                    && markerId.equals(new String(data, 0, markerId.length(), StandardCharsets.US_ASCII))) {
+                int offset = markerId.length() + 3; // ICC_PROFILE + null + index + count
+                iccSegments.write(Arrays.copyOfRange(data, offset, data.length));
+            }
+        }
+
+        ICC_Profile profile = ICC_Profile.getInstance(iccSegments.toByteArray());
+        assertNotNull(profile); // Assumption, we either have a valid profile, or getInstance blew up...
+        assertEquals(ColorSpace.TYPE_CMYK, profile.getColorSpaceType());
+    }
+
+    @Test
+    public void testTranscodeWithMetadataCMYKtoCMYKNoProfile() throws IOException {
+        ImageWriter writer = createWriter();
+        ImageReader reader = ImageIO.getImageReader(writer);
+
+        // TODO: Add flag to allow removing the ICC profile from image
+        ByteArrayOutputStream stream = transcode(reader, getClassLoaderResource("/jpeg/cmyk-sample-multiple-chunk-icc.jpg"), writer, ColorSpace.TYPE_CMYK, false);
+
+        reader.reset();
+        reader.setInput(new ByteArrayImageInputStream(stream.toByteArray()));
+
+        BufferedImage image = reader.read(0);
+        assertNotNull(image);
+        assertEquals(100, image.getWidth());
+        assertEquals(100, image.getHeight());
+
+        // Test color space type CMYK in standard metadata
+        IIOMetadata metadata = reader.getImageMetadata(0);
+        IIOMetadataNode standard = (IIOMetadataNode) metadata.getAsTree(IIOMetadataFormatImpl.standardMetadataFormatName);
+        NodeList colorSpaceType = standard.getElementsByTagName("ColorSpaceType");
+        assertEquals(1, colorSpaceType.getLength());
+        assertEquals("CMYK", ((IIOMetadataNode) colorSpaceType.item(0)).getAttribute("name"));
+
+        // Test APP2/ICC_PROFILE segments form native metadata
+        IIOMetadataNode nativeMeta = (IIOMetadataNode) metadata.getAsTree(JPEGImage10Metadata.JAVAX_IMAGEIO_JPEG_IMAGE_1_0);
+        NodeList unknown = nativeMeta.getElementsByTagName("unknown");
+        assertEquals(0, unknown.getLength());
     }
 
     // TODO: YCCK

imageio/imageio-jpeg/src/test/java/com/twelvemonkeys/imageio/plugins/jpeg/JPEGSegmentImageInputStreamTest.java

@@ -34,6 +34,7 @@ import com.twelvemonkeys.imageio.metadata.jpeg.JPEG;
 import com.twelvemonkeys.imageio.metadata.jpeg.JPEGSegment;
 import com.twelvemonkeys.imageio.metadata.jpeg.JPEGSegmentUtil;
 import com.twelvemonkeys.imageio.stream.URLImageInputStreamSpi;
+
 import org.junit.Test;
 import org.mockito.internal.matchers.LessOrEqual;
 
@@ -46,7 +47,9 @@ import java.io.IOException;
 import java.net.URL;
 import java.util.List;
 
-import static org.junit.Assert.*;
+import static org.hamcrest.MatcherAssert.assertThat;
+import static org.junit.Assert.assertArrayEquals;
+import static org.junit.Assert.assertEquals;
 
 /**
  * JPEGSegmentImageInputStreamTest

imageio/imageio-metadata/pom.xml

@@ -3,7 +3,7 @@
     <parent>
 	<groupId>com.twelvemonkeys.imageio</groupId>        
 	<artifactId>imageio</artifactId>        
-        <version>3.6</version>
+        <version>3.6.2</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
     <artifactId>imageio-metadata</artifactId>
@@ -21,6 +21,7 @@
             <groupId>com.twelvemonkeys.imageio</groupId>
             <artifactId>imageio-core</artifactId>
             <type>test-jar</type>
+            <scope>test</scope>
         </dependency>
     </dependencies>
 </project>

imageio/imageio-metadata/src/main/java/com/twelvemonkeys/imageio/metadata/AbstractEntry.java

@@ -30,12 +30,12 @@
 
 package com.twelvemonkeys.imageio.metadata;
 
-import com.twelvemonkeys.lang.Validate;
-import com.twelvemonkeys.util.CollectionUtil;
-
 import java.lang.reflect.Array;
 import java.util.Arrays;
 
+import com.twelvemonkeys.lang.Validate;
+import com.twelvemonkeys.util.CollectionUtil;
+
 /**
  * AbstractEntry
  *
@@ -84,17 +84,21 @@ public abstract class AbstractEntry implements Entry {
     }
 
     public String getValueAsString() {
-        if (valueCount() > 1) {
-            if (valueCount() < 16) {
+        int count = valueCount();
+
+        if (count == 0 && value != null && value.getClass().isArray() && Array.getLength(value) == 0) {
+            return "";
+        }
+        if (count > 1) {
+            if (count < 16) {
                 return arrayToString(value);
             }
             else {
                 String first = arrayToString(CollectionUtil.subArray(value, 0, 4));
-                String last = arrayToString(CollectionUtil.subArray(value, valueCount() - 4, 4));
-                return String.format("%s ... %s (%d)", first.substring(0, first.length() - 1), last.substring(1), valueCount());
+                String last = arrayToString(CollectionUtil.subArray(value, count - 4, 4));
+                return String.format("%s ... %s (%d)", first.substring(0, first.length() - 1), last.substring(1), count);
             }
         }
-
         if (value != null && value.getClass().isArray() && Array.getLength(value) == 1) {
             return String.valueOf(Array.get(value, 0));
         }

imageio/imageio-metadata/src/main/java/com/twelvemonkeys/imageio/metadata/exif/Rational.java

@@ -41,7 +41,6 @@ package com.twelvemonkeys.imageio.metadata.exif;
  *
  * @deprecated Use com.twelvemonkeys.imageio.metadata.tiff.Rational instead.
  */
-@SuppressWarnings("deprecation")
 public final class Rational extends Number implements Comparable<Rational> {
     private final com.twelvemonkeys.imageio.metadata.tiff.Rational delegate;
 

imageio/imageio-metadata/src/main/java/com/twelvemonkeys/imageio/metadata/jpeg/JPEGSegmentUtil.java

@@ -48,7 +48,7 @@ import java.io.ByteArrayOutputStream;
 import java.io.EOFException;
 import java.io.File;
 import java.io.IOException;
-import java.nio.charset.Charset;
+import java.nio.charset.StandardCharsets;
 import java.util.*;
 
 import static com.twelvemonkeys.lang.Validate.notNull;
@@ -154,7 +154,7 @@ public final class JPEGSegmentUtil {
     }
 
     static String asAsciiString(final byte[] data, final int offset, final int length) {
-        return new String(data, offset, length, Charset.forName("ascii"));
+        return new String(data, offset, length, StandardCharsets.US_ASCII);
     }
 
     static void readSOI(final ImageInputStream stream) throws IOException {

imageio/imageio-metadata/src/main/java/com/twelvemonkeys/imageio/metadata/tiff/Rational.java

@@ -143,7 +143,7 @@ public final class Rational extends Number implements Comparable<Rational> {
         double thisVal = doubleValue();
         double otherVal = pOther.doubleValue();
 
-        return thisVal < otherVal ? -1 : thisVal == otherVal ? 0 : 1;
+        return Double.compare(thisVal, otherVal);
     }
 
     /// Object overrides

imageio/imageio-metadata/src/main/java/com/twelvemonkeys/imageio/metadata/tiff/TIFFReader.java

@@ -30,15 +30,8 @@
 
 package com.twelvemonkeys.imageio.metadata.tiff;
 
-import com.twelvemonkeys.imageio.metadata.Directory;
-import com.twelvemonkeys.imageio.metadata.Entry;
-import com.twelvemonkeys.imageio.metadata.MetadataReader;
-import com.twelvemonkeys.lang.StringUtil;
-import com.twelvemonkeys.lang.Validate;
+import static com.twelvemonkeys.imageio.metadata.tiff.TIFFEntry.getValueLength;
 
-import javax.imageio.IIOException;
-import javax.imageio.ImageIO;
-import javax.imageio.stream.ImageInputStream;
 import java.io.EOFException;
 import java.io.File;
 import java.io.IOException;
@@ -46,7 +39,15 @@ import java.nio.ByteOrder;
 import java.nio.charset.StandardCharsets;
 import java.util.*;
 
-import static com.twelvemonkeys.imageio.metadata.tiff.TIFFEntry.getValueLength;
+import javax.imageio.IIOException;
+import javax.imageio.ImageIO;
+import javax.imageio.stream.ImageInputStream;
+
+import com.twelvemonkeys.imageio.metadata.Directory;
+import com.twelvemonkeys.imageio.metadata.Entry;
+import com.twelvemonkeys.imageio.metadata.MetadataReader;
+import com.twelvemonkeys.lang.StringUtil;
+import com.twelvemonkeys.lang.Validate;
 
 /**
  * TIFFReader
@@ -336,7 +337,8 @@ public final class TIFFReader extends MetadataReader {
         else {
             long valueOffset = readOffset(pInput); // This is the *value* iff the value size is <= offsetSize
 
-            if (length > 0 && length < valueOffset + valueLength) {
+            // Note: This a precaution
+            if (count >= Integer.MAX_VALUE || length > 0 && length < valueOffset + valueLength) {
                 value = new EOFException(String.format("TIFF value offset or size too large: %d/%d bytes (length: %d bytes)", valueOffset, valueLength, length));
             }
             else {
@@ -367,7 +369,7 @@ public final class TIFFReader extends MetadataReader {
         long pos = pInput.getStreamPosition();
         try {
             pInput.seek(pOffset);
-            return readValue(pInput, pType, pCount);
+            return readValue(pInput, pType, pCount, longOffsets);
         }
         catch (EOFException e) {
             // TODO: Add warning listener API and report problem to client code
@@ -379,10 +381,10 @@ public final class TIFFReader extends MetadataReader {
     }
 
     private Object readValueInLine(final ImageInputStream pInput, final short pType, final int pCount) throws IOException {
-        return readValue(pInput, pType, pCount);
+        return readValue(pInput, pType, pCount, longOffsets);
     }
 
-    private static Object readValue(final ImageInputStream pInput, final short pType, final int pCount) throws IOException {
+    private static Object readValue(final ImageInputStream pInput, final short pType, final int pCount, boolean bigTIFF) throws IOException {
         // TODO: Review value "widening" for the unsigned types. Right now it's inconsistent. Should we leave it to client code?
         // TODO: New strategy: Leave data as is, instead perform the widening in TIFFEntry.getValue.
         // TODO: Add getValueByte/getValueUnsignedByte/getValueShort/getValueUnsignedShort/getValueInt/etc... in API.
@@ -513,24 +515,24 @@ public final class TIFFReader extends MetadataReader {
             case TIFF.TYPE_LONG8:
             case TIFF.TYPE_SLONG8:
             case TIFF.TYPE_IFD8:
-                // TODO: Assert BigTiff (version == 43)
+                if (bigTIFF) {
+                    if (pCount == 1) {
+                        long val = pInput.readLong();
+                        if (pType != TIFF.TYPE_SLONG8 && val < 0) {
+                            throw new IIOException(String.format("Value > %s", Long.MAX_VALUE));
+                        }
 
-                if (pCount == 1) {
-                    long val = pInput.readLong();
-                    if (pType != TIFF.TYPE_SLONG8 && val < 0) {
-                        throw new IIOException(String.format("Value > %s", Long.MAX_VALUE));
+                        return val;
                     }
 
-                    return val;
-                }
+                    long[] longs = new long[pCount];
+                    for (int i = 0; i < pCount; i++) {
+                        longs[i] = pInput.readLong();
+                    }
 
-                long[] longs = new long[pCount];
-                for (int i = 0; i < pCount; i++) {
-                    longs[i] = pInput.readLong();
+                    return longs;
                 }
 
-                return longs;
-
             default:
                 // Spec says skip unknown values
                 return new Unknown(pType, pCount, pos);

imageio/imageio-metadata/src/test/java/com/twelvemonkeys/imageio/metadata/MetadataReaderAbstractTest.java

@@ -31,10 +31,11 @@
 package com.twelvemonkeys.imageio.metadata;
 
 import com.twelvemonkeys.imageio.stream.URLImageInputStreamSpi;
+
 import org.hamcrest.Description;
 import org.hamcrest.Matcher;
+import org.hamcrest.TypeSafeMatcher;
 import org.junit.Test;
-import org.junit.internal.matchers.TypeSafeMatcher;
 
 import javax.imageio.ImageIO;
 import javax.imageio.spi.IIORegistry;
@@ -58,7 +59,7 @@ public abstract class MetadataReaderAbstractTest {
         ImageIO.setUseCache(false);
     }
 
-    protected final URL getResource(final String name) throws IOException {
+    protected final URL getResource(final String name) {
         return getClass().getResource(name);
     }
 

imageio/imageio-metadata/src/test/java/com/twelvemonkeys/imageio/metadata/exif/EXIFReaderTest.java

@@ -35,6 +35,7 @@ import com.twelvemonkeys.imageio.metadata.Directory;
 import com.twelvemonkeys.imageio.metadata.MetadataReaderAbstractTest;
 import com.twelvemonkeys.imageio.metadata.tiff.TIFF;
 import com.twelvemonkeys.imageio.stream.SubImageInputStream;
+
 import org.junit.Test;
 
 import javax.imageio.ImageIO;
@@ -44,6 +45,7 @@ import java.io.IOException;
 import java.io.InputStream;
 
 import static org.hamcrest.CoreMatchers.instanceOf;
+import static org.hamcrest.MatcherAssert.assertThat;
 import static org.junit.Assert.*;
 
 /**

imageio/imageio-metadata/src/test/java/com/twelvemonkeys/imageio/metadata/iptc/IPTCReaderTest.java

@@ -32,14 +32,15 @@ package com.twelvemonkeys.imageio.metadata.iptc;
 
 import com.twelvemonkeys.imageio.metadata.Directory;
 import com.twelvemonkeys.imageio.metadata.MetadataReaderAbstractTest;
+
 import org.junit.Test;
 
 import javax.imageio.ImageIO;
 import java.io.IOException;
 import java.io.InputStream;
 
+import static org.hamcrest.MatcherAssert.assertThat;
 import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertThat;
 
 /**
  * IPTCReaderTest

imageio/imageio-metadata/src/test/java/com/twelvemonkeys/imageio/metadata/tiff/TIFFReaderTest.java

@@ -30,6 +30,20 @@
 
 package com.twelvemonkeys.imageio.metadata.tiff;
 
+import static org.hamcrest.CoreMatchers.instanceOf;
+import static org.hamcrest.MatcherAssert.assertThat;
+import static org.junit.Assert.*;
+
+import java.io.EOFException;
+import java.io.IOException;
+import java.io.InputStream;
+
+import javax.imageio.ImageIO;
+import javax.imageio.stream.ImageInputStream;
+import javax.imageio.stream.MemoryCacheImageInputStream;
+
+import org.junit.Test;
+
 import com.twelvemonkeys.imageio.metadata.CompoundDirectory;
 import com.twelvemonkeys.imageio.metadata.Directory;
 import com.twelvemonkeys.imageio.metadata.Entry;
@@ -37,16 +51,6 @@ import com.twelvemonkeys.imageio.metadata.MetadataReaderAbstractTest;
 import com.twelvemonkeys.imageio.metadata.exif.EXIF;
 import com.twelvemonkeys.imageio.stream.ByteArrayImageInputStream;
 import com.twelvemonkeys.imageio.stream.SubImageInputStream;
-import org.junit.Test;
-
-import javax.imageio.ImageIO;
-import javax.imageio.stream.ImageInputStream;
-import java.io.EOFException;
-import java.io.IOException;
-import java.io.InputStream;
-
-import static org.hamcrest.CoreMatchers.instanceOf;
-import static org.junit.Assert.*;
 
 /**
  * TIFFReaderTest
@@ -346,6 +350,21 @@ public class TIFFReaderTest extends MetadataReaderAbstractTest {
         }
     }
 
+    @Test
+    public void testReadWithoutOOME() throws IOException {
+        // This EXIF segment from a JPEG contains an Interop IFD, containing a weird value that could be interpreted
+        // as a huge SLONG8 field (valid for BigTIFF only).
+        // OutOfMemoryError would only happen if length of stream is not known (ie. reading from underlying stream).
+        try (InputStream stream = getResource("/exif/exif-bad-interop-oome.bin").openStream()) {
+            CompoundDirectory directory = (CompoundDirectory) createReader().read(new MemoryCacheImageInputStream(stream));
+            assertEquals(2, directory.directoryCount());
+            assertEquals(11, directory.getDirectory(0).size());
+            assertEquals(6, directory.getDirectory(1).size());
+            assertEquals("Picasa", directory.getDirectory(0).getEntryById(TIFF.TAG_SOFTWARE).getValue());
+            assertEquals("2020:11:17 16:05:37", directory.getDirectory(0).getEntryById(TIFF.TAG_DATE_TIME).getValueAsString());
+        }
+    }
+
     @Test(timeout = 200)
     public void testReadCyclicExifWithoutLoopOrOOME() throws IOException {
         // This EXIF segment has an interesting bug...

imageio/imageio-metadata/src/test/java/com/twelvemonkeys/imageio/metadata/xmp/XMPReaderTest.java

@@ -34,6 +34,7 @@ import com.twelvemonkeys.imageio.metadata.CompoundDirectory;
 import com.twelvemonkeys.imageio.metadata.Directory;
 import com.twelvemonkeys.imageio.metadata.Entry;
 import com.twelvemonkeys.imageio.metadata.MetadataReaderAbstractTest;
+
 import org.junit.Test;
 
 import javax.imageio.ImageIO;
@@ -46,7 +47,9 @@ import java.util.HashMap;
 import java.util.Iterator;
 
 import static org.hamcrest.CoreMatchers.instanceOf;
-import static org.junit.Assert.*;
+import static org.hamcrest.MatcherAssert.assertThat;
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNotNull;
 
 /**
  * XMPReaderTest
@@ -377,6 +380,7 @@ public class XMPReaderTest extends MetadataReaderAbstractTest {
         // photoshop|http://ns.adobe.com/photoshop/1.0/
         Directory photoshop = getDirectoryByNS(compound, XMP.NS_PHOTOSHOP);
 
+        assertNotNull(photoshop);
         assertEquals(3, photoshop.size());
         assertThat(photoshop.getEntryById("http://ns.adobe.com/photoshop/1.0/ColorMode"), hasValue("1"));
         assertThat(photoshop.getEntryById("http://ns.adobe.com/photoshop/1.0/ICCProfile"), hasValue("Dot Gain 20%"));
@@ -392,6 +396,8 @@ public class XMPReaderTest extends MetadataReaderAbstractTest {
 
         // xapMM|http://ns.adobe.com/xap/1.0/mm/
         Directory mm = getDirectoryByNS(compound, XMP.NS_XAP_MM);
+
+        assertNotNull(mm);
         assertEquals(3, mm.size());
         assertThat(directory.getEntryById("http://ns.adobe.com/xap/1.0/mm/DocumentID"), hasValue("uuid:6DCA50CC7D53DD119F20F5A7EA4C9BEC"));
         assertThat(directory.getEntryById("http://ns.adobe.com/xap/1.0/mm/InstanceID"), hasValue("uuid:6ECA50CC7D53DD119F20F5A7EA4C9BEC"));
@@ -416,6 +422,8 @@ public class XMPReaderTest extends MetadataReaderAbstractTest {
 
         // dc|http://purl.org/dc/elements/1.1/
         Directory dc = getDirectoryByNS(compound, XMP.NS_DC);
+
+        assertNotNull(dc);
         assertEquals(1, dc.size());
 
         assertThat(dc.getEntryById("http://purl.org/dc/elements/1.1/format"), hasValue("image/jpeg"));
@@ -430,6 +438,8 @@ public class XMPReaderTest extends MetadataReaderAbstractTest {
 
         // tiff|http://ns.adobe.com/tiff/1.0/
         Directory tiff = getDirectoryByNS(compound, XMP.NS_TIFF);
+
+        assertNotNull(tiff);
         assertEquals(5, tiff.size());
         assertThat(tiff.getEntryById("http://ns.adobe.com/tiff/1.0/Orientation"), hasValue("1"));
         assertThat(tiff.getEntryById("http://ns.adobe.com/tiff/1.0/XResolution"), hasValue("720000/10000"));
@@ -447,6 +457,8 @@ public class XMPReaderTest extends MetadataReaderAbstractTest {
 
         // xap|http://ns.adobe.com/xap/1.0/
         Directory xap = getDirectoryByNS(compound, XMP.NS_XAP);
+
+        assertNotNull(xap);
         assertEquals(4, xap.size());
         assertThat(xap.getEntryById("http://ns.adobe.com/xap/1.0/ModifyDate"), hasValue("2008-07-16T14:44:49-07:00"));
         assertThat(xap.getEntryById("http://ns.adobe.com/xap/1.0/CreatorTool"), hasValue("Adobe Photoshop CS3 Windows"));
@@ -463,6 +475,8 @@ public class XMPReaderTest extends MetadataReaderAbstractTest {
 
         // exif|http://ns.adobe.com/exif/1.0/
         Directory exif = getDirectoryByNS(compound, XMP.NS_EXIF);
+
+        assertNotNull(exif);
         assertEquals(4, exif.size());
         assertThat(exif.getEntryById("http://ns.adobe.com/exif/1.0/ColorSpace"), hasValue("-1")); // SIC. Same as unsigned short 65535, meaning "uncalibrated"?
         assertThat(exif.getEntryById("http://ns.adobe.com/exif/1.0/PixelXDimension"), hasValue("426"));

imageio/imageio-pcx/pom.xml

@@ -4,7 +4,7 @@
     <parent>
         <groupId>com.twelvemonkeys.imageio</groupId>
         <artifactId>imageio</artifactId>
-        <version>3.6</version>
+        <version>3.6.2</version>
     </parent>
     <artifactId>imageio-pcx</artifactId>
     <name>TwelveMonkeys :: ImageIO :: PCX plugin</name>
@@ -21,6 +21,7 @@
             <groupId>com.twelvemonkeys.imageio</groupId>
             <artifactId>imageio-core</artifactId>
             <type>test-jar</type>
+            <scope>test</scope>
         </dependency>
     </dependencies>
 </project>

imageio/imageio-pcx/src/test/java/com/twelvemonkeys/imageio/plugins/dcx/DCXImageReaderTest.java

@@ -31,6 +31,7 @@
 package com.twelvemonkeys.imageio.plugins.dcx;
 
 import com.twelvemonkeys.imageio.util.ImageReaderAbstractTest;
+
 import org.junit.Test;
 
 import javax.imageio.ImageIO;
@@ -54,12 +55,6 @@ import static org.junit.Assert.assertNotNull;
  * @version $Id: DCXImageReaderTest.java,v 1.0 03.07.14 22:28 haraldk Exp$
  */
 public class DCXImageReaderTest extends ImageReaderAbstractTest<DCXImageReader> {
-    @Override
-    protected List<TestData> getTestData() {
-        return Collections.singletonList(
-                new TestData(getClassLoaderResource("/dcx/input.dcx"), new Dimension(70, 46)) // RLE encoded RGB (the only sample I've found)
-        );
-    }
 
     @Override
     protected ImageReaderSpi createProvider() {
@@ -67,13 +62,10 @@ public class DCXImageReaderTest extends ImageReaderAbstractTest<DCXImageReader>
     }
 
     @Override
-    protected Class<DCXImageReader> getReaderClass() {
-        return DCXImageReader.class;
-    }
-
-    @Override
-    protected DCXImageReader createReader() {
-        return new DCXImageReader(createProvider());
+    protected List<TestData> getTestData() {
+        return Collections.singletonList(
+                new TestData(getClassLoaderResource("/dcx/input.dcx"), new Dimension(70, 46)) // RLE encoded RGB (the only sample I've found)
+        );
     }
 
     @Override

imageio/imageio-pcx/src/test/java/com/twelvemonkeys/imageio/plugins/pcx/PCXImageReaderTest.java

@@ -31,6 +31,7 @@
 package com.twelvemonkeys.imageio.plugins.pcx;
 
 import com.twelvemonkeys.imageio.util.ImageReaderAbstractTest;
+
 import org.junit.Test;
 
 import javax.imageio.ImageIO;
@@ -55,6 +56,11 @@ import static org.junit.Assert.assertNotNull;
  * @version $Id: PCXImageReaderTest.java,v 1.0 03.07.14 22:28 haraldk Exp$
  */
 public class PCXImageReaderTest extends ImageReaderAbstractTest<PCXImageReader> {
+    @Override
+    protected ImageReaderSpi createProvider() {
+        return new PCXImageReaderSpi();
+    }
+
     @Override
     protected List<TestData> getTestData() {
         return Arrays.asList(
@@ -79,21 +85,6 @@ public class PCXImageReaderTest extends ImageReaderAbstractTest<PCXImageReader>
         );
     }
 
-    @Override
-    protected ImageReaderSpi createProvider() {
-        return new PCXImageReaderSpi();
-    }
-
-    @Override
-    protected Class<PCXImageReader> getReaderClass() {
-        return PCXImageReader.class;
-    }
-
-    @Override
-    protected PCXImageReader createReader() {
-        return new PCXImageReader(createProvider());
-    }
-
     @Override
     protected List<String> getFormatNames() {
         return Arrays.asList("PCX", "pcx");

imageio/imageio-pdf/pom.xml

@@ -4,7 +4,7 @@
     <parent>
         <groupId>com.twelvemonkeys.imageio</groupId>
         <artifactId>imageio</artifactId>
-        <version>3.6</version>
+        <version>3.6.2</version>
     </parent>
     <artifactId>imageio-pdf</artifactId>
     <name>TwelveMonkeys :: ImageIO :: PDF plugin</name>
@@ -22,6 +22,7 @@
             <groupId>com.twelvemonkeys.imageio</groupId>
             <artifactId>imageio-core</artifactId>
             <type>test-jar</type>
+            <scope>test</scope>
         </dependency>
     </dependencies>
 </project>

imageio/imageio-pict/pom.xml

@@ -4,7 +4,7 @@
     <parent>
         <groupId>com.twelvemonkeys.imageio</groupId>
         <artifactId>imageio</artifactId>
-        <version>3.6</version>
+        <version>3.6.2</version>
     </parent>
     <artifactId>imageio-pict</artifactId>
     <name>TwelveMonkeys :: ImageIO :: PICT plugin</name>
@@ -19,6 +19,7 @@
             <groupId>com.twelvemonkeys.imageio</groupId>
             <artifactId>imageio-core</artifactId>
             <type>test-jar</type>
+            <scope>test</scope>
         </dependency>
     </dependencies>
 

imageio/imageio-pict/src/main/java/com/twelvemonkeys/imageio/plugins/pict/PICTImageReaderSpi.java

@@ -60,6 +60,13 @@ public final class PICTImageReaderSpi extends ImageReaderSpiBase {
         }
 
         ImageInputStream stream = (ImageInputStream) pSource;
+
+        // PICT format don't have good magic and our method often gives false positives,
+        // We'll check for other known formats (BMP, GIF, JPEG, PNG, PSD, TIFF) first
+        if (isOtherFormat(stream)) {
+            return false;
+        }
+
         stream.mark();
 
         try {
@@ -68,13 +75,12 @@ public final class PICTImageReaderSpi extends ImageReaderSpiBase {
                 return true;
             }
             else {
-                // Skip header 512 bytes for file-based streams
-                stream.reset();
-
-                // We need to set mark again, to make sure the reset call in
+                // We need to reset AND set mark again, to make sure the reset call in
                 // the finally block will not consume existing marks
+                stream.reset();
                 stream.mark();
 
+                // Skip header 512 bytes for file-based streams
                 skipNullHeader(stream);
             }
 
@@ -88,6 +94,60 @@ public final class PICTImageReaderSpi extends ImageReaderSpiBase {
         }
     }
 
+    // TODO: Candidate util method.
+    //      Might need to be able to exclude some formats
+    //      Might need to return the format matched...
+    static boolean isOtherFormat(final ImageInputStream stream) throws IOException {
+        stream.mark();
+
+        try {
+            byte[] signature = new byte[8];
+            stream.readFully(signature);
+
+            // BMP: off: 0, len: 2, magic: 'B', 'M'
+            // GIF: off: 0, len: 6, magic: 'G', 'I', 'F', '8', ('7' | '9'), 'a' (use only "GIF8"?)
+            // JPEG: off 0, len: 2, magic: 0xffd8 (SOI marker)
+            // PNG: off: 0, len: 8, magic: 0x89, 'P', 'N', 'G', 0x0d0a1a0a
+            // PSD: off: 0, len: 4, magic: '8', 'B', 'P', 'S'
+            // TIFF: off: 0, len: 4, magic: ('I', 'I', 0x00, (0x42 | 0x43)) | ('M', 'M', (0x42 | 0x43), 0x00) (43 is bigTiff)
+            if (signature[0] == 'B' && signature[1] == 'M') {
+                // BMP
+                return true;
+            }
+            if (signature[0] == 'G' && signature[1] == 'I' && signature[2] == 'F' && signature[3] == '8'
+                    && (signature[4] == '7' || signature[4] == '9') && signature[5] == 'a') {
+                // GIF
+                return true;
+            }
+            if (signature[0] == (byte) 0xFF && signature[1] == (byte) 0xD8 && signature[2] == (byte) 0xFF) {
+                // JPEG
+                return true;
+            }
+            if (signature[0] == (byte) 0x89 && signature[1] == 'P' && signature[2] == 'N' && signature[3] == 'G'
+                    && signature[4] == 0x0D && signature[5] == 0x0A && signature[6] == 0x1A && signature[7] == 0x0A) {
+                // PNG
+                return true;
+            }
+            if (signature[0] == '8' && signature[1] == 'B' && signature[2] == 'P' && signature[3] == 'S') {
+                // PSD
+                return true;
+            }
+            if ((signature[0] == 'I' && signature[1] == 'I' && (signature[2] == 42 ||  signature[2] == 43) && signature[3] == 0x00)
+                || signature[0] == 'M' && signature[1] == 'M' && signature[2] == 0x00 && (signature[3] == 42 ||  signature[3] == 43)) {
+                // TIFF/BigTIFF
+                return true;
+            }
+        }
+        catch (EOFException ignore) {
+            // Can't be any of the formats
+        }
+        finally {
+            stream.reset();
+        }
+
+        return false;
+    }
+
     static void skipNullHeader(final ImageInputStream pStream) throws IOException {
         // NOTE: Only skip if FILE FORMAT, not needed for Mac OS DnD
         // Spec says "platform dependent", may not be all nulls..
@@ -102,10 +162,6 @@ public final class PICTImageReaderSpi extends ImageReaderSpiBase {
         // Sanity check bounding box
         int y1 = pStream.readUnsignedShort();
         int x1 = pStream.readUnsignedShort();
-        // TODO: Figure out if frame can ever start at negative bounds...
-        // if (x1 != 0 || y1 != 0) {
-        //     return false;
-        // }
 
         int y2 = pStream.readUnsignedShort();
         int x2 = pStream.readUnsignedShort();

imageio/imageio-pict/src/test/java/com/twelvemonkeys/imageio/plugins/pict/PICTImageReaderTest.java

@@ -33,6 +33,7 @@ package com.twelvemonkeys.imageio.plugins.pict;
 import com.twelvemonkeys.imageio.stream.ByteArrayImageInputStream;
 import com.twelvemonkeys.imageio.stream.ByteArrayImageInputStreamSpi;
 import com.twelvemonkeys.imageio.util.ImageReaderAbstractTest;
+
 import org.junit.Ignore;
 import org.junit.Test;
 
@@ -46,8 +47,8 @@ import java.util.Arrays;
 import java.util.Collections;
 import java.util.List;
 
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertFalse;
+import static com.twelvemonkeys.imageio.plugins.pict.PICTImageReaderSpi.isOtherFormat;
+import static org.junit.Assert.*;
 
 /**
  * ICOImageReaderTestCase
@@ -62,7 +63,10 @@ public class PICTImageReaderTest extends ImageReaderAbstractTest<PICTImageReader
         IIORegistry.getDefaultInstance().registerServiceProvider(new ByteArrayImageInputStreamSpi());
     }
 
-    static ImageReaderSpi sProvider = new PICTImageReaderSpi();
+    @Override
+    protected ImageReaderSpi createProvider() {
+        return new PICTImageReaderSpi();
+    }
 
     // TODO: Should also test the clipboard format (without 512 byte header)
     protected List<TestData> getTestData() {
@@ -91,31 +95,53 @@ public class PICTImageReaderTest extends ImageReaderAbstractTest<PICTImageReader
         );
     }
 
-    protected ImageReaderSpi createProvider() {
-        return sProvider;
-    }
-
     @Override
-    protected PICTImageReader createReader() {
-        return new PICTImageReader(sProvider);
-    }
-
-    protected Class<PICTImageReader> getReaderClass() {
-        return PICTImageReader.class;
-    }
-
     protected List<String> getFormatNames() {
         return Collections.singletonList("pict");
     }
 
+    @Override
     protected List<String> getSuffixes() {
         return Arrays.asList("pct", "pict");
     }
 
+    @Override
     protected List<String> getMIMETypes() {
         return Arrays.asList("image/pict", "image/x-pict");
     }
 
+    @Test
+    public void testIsOtherFormat() throws IOException {
+        assertFalse(isOtherFormat(new ByteArrayImageInputStream(new byte[8])));
+
+        // BMP
+        assertTrue(isOtherFormat(new ByteArrayImageInputStream(new byte[] {'B', 'M', 0, 0, 0, 0, 0, 0})));
+
+        // GIF
+        assertTrue(isOtherFormat(new ByteArrayImageInputStream(new byte[] {'G', 'I', 'F', '8', '7', 'a', 0, 0})));
+        assertTrue(isOtherFormat(new ByteArrayImageInputStream(new byte[] {'G', 'I', 'F', '8', '9', 'a', 0, 0})));
+
+        // JPEG (JFIF, EXIF, "raw")
+        assertTrue(isOtherFormat(new ByteArrayImageInputStream(new byte[] {(byte) 0xFF, (byte) 0xD8, (byte) 0xFF, (byte) 0xE0, 0, 0, 0, 0})));
+        assertTrue(isOtherFormat(new ByteArrayImageInputStream(new byte[] {(byte) 0xFF, (byte) 0xD8, (byte) 0xFF, (byte) 0xE1, 0, 0, 0, 0})));
+        assertTrue(isOtherFormat(new ByteArrayImageInputStream(new byte[] {(byte) 0xFF, (byte) 0xD8, (byte) 0xFF, (byte) 0xDB, 0, 0, 0, 0})));
+        assertTrue(isOtherFormat(new ByteArrayImageInputStream(new byte[] {(byte) 0xFF, (byte) 0xD8, (byte) 0xFF, (byte) 0xC4, 0, 0, 0, 0})));
+
+        // PNG
+        assertTrue(isOtherFormat(new ByteArrayImageInputStream(new byte[] {(byte) 0x89, 'P', 'N', 'G', 0x0D, 0x0A, 0x1A, 0x0A})));
+
+        // PSD
+        assertTrue(isOtherFormat(new ByteArrayImageInputStream(new byte[] {'8', 'B', 'P', 'S', 0, 0, 0, 0})));
+
+        // TIFF (Little Endian, Big Endian)
+        assertTrue(isOtherFormat(new ByteArrayImageInputStream(new byte[] {'I', 'I', 42, 0, 0, 0, 0, 0})));
+        assertTrue(isOtherFormat(new ByteArrayImageInputStream(new byte[] {'M', 'M', 0, 42, 0, 0, 0, 0})));
+
+        // BigTIFF (Little Endian, Big Endian)
+        assertTrue(isOtherFormat(new ByteArrayImageInputStream(new byte[] {'I', 'I', 43, 0, 0, 0, 0, 0})));
+        assertTrue(isOtherFormat(new ByteArrayImageInputStream(new byte[] {'M', 'M', 0, 43, 0, 0, 0, 0})));
+    }
+
     @Ignore("Known issue")
     @Test
     @Override
@@ -130,7 +156,7 @@ public class PICTImageReaderTest extends ImageReaderAbstractTest<PICTImageReader
             stream.mark();
             stream.seek(123);
 
-            sProvider.canDecodeInput(stream);
+            ((ImageReaderSpi) new PICTImageReaderSpi()).canDecodeInput(stream);
 
             assertEquals(123, stream.getStreamPosition());
             stream.reset();
@@ -144,35 +170,39 @@ public class PICTImageReaderTest extends ImageReaderAbstractTest<PICTImageReader
     public void testProviderNotMatchJPEG() throws IOException {
         // This JPEG contains PICT magic bytes at locations a PICT would normally have them.
         // We should not claim to be able read it.
-        assertFalse(sProvider.canDecodeInput(
+        assertFalse(((ImageReaderSpi) new PICTImageReaderSpi()).canDecodeInput(
                 new TestData(getClassLoaderResource("/jpeg/R-7439-1151526181.jpeg"),
                 new Dimension(386, 396)
         )));
+        assertFalse(((ImageReaderSpi) new PICTImageReaderSpi()).canDecodeInput(
+                new TestData(getClassLoaderResource("/jpeg/89497426-adc19a00-d7ff-11ea-8ad1-0cbcd727b62a.jpeg"),
+                new Dimension(640, 480)
+        )));
     }
 
     @Test
-    public void testDataExtV2() throws IOException, InterruptedException {
+    public void testDataExtV2() throws IOException {
         PICTImageReader reader = createReader();
         reader.setInput(new ByteArrayImageInputStream(DATA_EXT_V2));
         reader.read(0);
     }
 
     @Test
-    public void testDataV2() throws IOException, InterruptedException {
+    public void testDataV2() throws IOException {
         PICTImageReader reader = createReader();
         reader.setInput(new ByteArrayImageInputStream(DATA_V2));
         reader.read(0);
     }
 
     @Test
-    public void testDataV1() throws IOException, InterruptedException {
+    public void testDataV1() throws IOException {
         PICTImageReader reader = createReader();
         reader.setInput(new ByteArrayImageInputStream(DATA_V1));
         reader.read(0);
     }
 
     @Test
-    public void testDataV1OvalRect() throws IOException, InterruptedException {
+    public void testDataV1OvalRect() throws IOException {
         PICTImageReader reader = createReader();
         reader.setInput(new ByteArrayImageInputStream(DATA_V1_OVAL_RECT));
         reader.read(0);
@@ -193,7 +223,7 @@ public class PICTImageReaderTest extends ImageReaderAbstractTest<PICTImageReader
     }
 
     @Test
-    public void testDataV1CopyBits() throws IOException, InterruptedException {
+    public void testDataV1CopyBits() throws IOException {
         PICTImageReader reader = createReader();
         reader.setInput(new ByteArrayImageInputStream(DATA_V1_COPY_BITS));
         reader.read(0);

imageio/imageio-pict/src/test/java/com/twelvemonkeys/imageio/plugins/pict/PICTImageWriterTest.java

@@ -32,10 +32,12 @@ package com.twelvemonkeys.imageio.plugins.pict;
 
 import com.twelvemonkeys.imageio.stream.ByteArrayImageInputStream;
 import com.twelvemonkeys.imageio.util.ImageWriterAbstractTest;
+
 import org.junit.Test;
 
 import javax.imageio.ImageIO;
 import javax.imageio.ImageWriter;
+import javax.imageio.spi.ImageWriterSpi;
 import javax.imageio.stream.ImageInputStream;
 import javax.imageio.stream.ImageOutputStream;
 import java.awt.color.ColorSpace;
@@ -55,12 +57,10 @@ import static org.junit.Assert.*;
  * @author last modified by $Author: haraldk$
  * @version $Id: PICTImageWriterTest.java,v 1.0 20.01.12 12:26 haraldk Exp$
  */
-public class PICTImageWriterTest extends ImageWriterAbstractTest {
-    private final PICTImageWriterSpi provider = new PICTImageWriterSpi();
-
+public class PICTImageWriterTest extends ImageWriterAbstractTest<PICTImageWriter> {
     @Override
-    protected ImageWriter createImageWriter() {
-        return new PICTImageWriter(provider);
+    protected ImageWriterSpi createProvider() {
+        return new PICTImageWriterSpi();
     }
 
     @Override
@@ -79,7 +79,7 @@ public class PICTImageWriterTest extends ImageWriterAbstractTest {
 
     @Test
     public void testWriteReadCompare() throws IOException {
-        ImageWriter writer = createImageWriter();
+        ImageWriter writer = createWriter();
 
         List<? extends RenderedImage> testData = getTestData();
         for (int i = 0; i < testData.size(); i++) {

imageio/imageio-pnm/pom.xml

@@ -4,7 +4,7 @@
     <parent>
         <groupId>com.twelvemonkeys.imageio</groupId>
         <artifactId>imageio</artifactId>
-        <version>3.6</version>
+        <version>3.6.2</version>
     </parent>
     <artifactId>imageio-pnm</artifactId>
     <name>TwelveMonkeys :: ImageIO :: PNM plugin</name>
@@ -22,6 +22,7 @@
             <groupId>com.twelvemonkeys.imageio</groupId>
             <artifactId>imageio-core</artifactId>
             <type>test-jar</type>
+            <scope>test</scope>
         </dependency>
     </dependencies>
 </project>

imageio/imageio-pnm/src/main/java/com/twelvemonkeys/imageio/plugins/pnm/HeaderWriter.java

@@ -30,6 +30,8 @@
 
 package com.twelvemonkeys.imageio.plugins.pnm;
 
+import com.twelvemonkeys.imageio.ImageWriterBase;
+
 import org.w3c.dom.NodeList;
 
 import javax.imageio.IIOImage;
@@ -40,27 +42,30 @@ import javax.imageio.spi.ImageWriterSpi;
 import javax.imageio.stream.ImageOutputStream;
 import java.awt.image.DataBuffer;
 import java.io.IOException;
-import java.nio.charset.Charset;
 import java.util.Locale;
 
+import static java.nio.charset.StandardCharsets.UTF_8;
+
 abstract class HeaderWriter {
-    protected static final Charset UTF8 = Charset.forName("UTF8");
     protected final ImageOutputStream imageOutput;
 
     protected HeaderWriter(final ImageOutputStream imageOutput) {
         this.imageOutput = imageOutput;
     }
 
-    public static void write(final IIOImage image, final ImageWriterSpi provider, final ImageOutputStream imageOutput) throws IOException {
-        // TODO: This is somewhat sketchy...
-        if (provider.getFormatNames()[0].equals("pam")) {
-            new PAMHeaderWriter(imageOutput).writeHeader(image, provider);
+    public static void write(final IIOImage image, final ImageWriterBase writer, final ImageOutputStream imageOutput) throws IOException {
+        createHeaderWriter(writer.getFormatName(), imageOutput).writeHeader(image, writer.getOriginatingProvider());
+    }
+
+    private static HeaderWriter createHeaderWriter(final String formatName, final ImageOutputStream imageOutput) {
+        if (formatName.equals("pam")) {
+            return new PAMHeaderWriter(imageOutput);
         }
-        else if (provider.getFormatNames()[0].equals("pnm")) {
-            new PNMHeaderWriter(imageOutput).writeHeader(image, provider);
+        else if (formatName.equals("pnm")) {
+            return new PNMHeaderWriter(imageOutput);
         }
         else {
-            throw new AssertionError("Unsupported provider: " + provider);
+            throw new AssertionError("Unsupported format: " + formatName);
         }
     }
 
@@ -101,7 +106,7 @@ abstract class HeaderWriter {
 
     protected final void writeComments(final IIOMetadata metadata, final ImageWriterSpi provider) throws IOException {
         // TODO: Only write creator if not already present
-        imageOutput.write(String.format("# CREATOR: %s %s\n", provider.getVendorName(), provider.getDescription(Locale.getDefault())).getBytes(UTF8));
+        imageOutput.write(String.format("# CREATOR: %s %s\n", provider.getVendorName(), provider.getDescription(Locale.getDefault())).getBytes(UTF_8));
 
         // Comments from metadata
         if (metadata != null && metadata.isStandardMetadataFormatSupported()) {
@@ -111,7 +116,7 @@ abstract class HeaderWriter {
             for (int i = 0; i < textEntries.getLength(); i++) {
                 // TODO: Write on the format "# KEYWORD: value" (if keyword != comment)?
                 IIOMetadataNode textEntry = (IIOMetadataNode) textEntries.item(i);
-                imageOutput.write(String.format("# %s", textEntry.getAttribute("value")).getBytes(UTF8));
+                imageOutput.write(String.format("# %s", textEntry.getAttribute("value")).getBytes(UTF_8));
             }
         }
     }

imageio/imageio-pnm/src/main/java/com/twelvemonkeys/imageio/plugins/pnm/PAMHeaderParser.java

@@ -66,7 +66,7 @@ final class PAMHeaderParser extends HeaderParser {
         int depth = -1;
         int maxVal = -1;
         TupleType tupleType = null;
-        List<String> comments = new ArrayList<String>();
+        List<String> comments = new ArrayList<>();
 
         String line;
         while ((line = input.readLine()) != null && !line.startsWith(ENDHDR)) {

imageio/imageio-pnm/src/main/java/com/twelvemonkeys/imageio/plugins/pnm/PAMHeaderWriter.java

@@ -35,6 +35,8 @@ import javax.imageio.spi.ImageWriterSpi;
 import javax.imageio.stream.ImageOutputStream;
 import java.io.IOException;
 
+import static java.nio.charset.StandardCharsets.UTF_8;
+
 final class PAMHeaderWriter extends HeaderWriter {
     public PAMHeaderWriter(final ImageOutputStream imageOutput) {
         super(imageOutput);
@@ -48,14 +50,14 @@ final class PAMHeaderWriter extends HeaderWriter {
         // Comments
         writeComments(image.getMetadata(), provider);
         // Write width/height and number of channels
-        imageOutput.write(String.format("WIDTH %s\nHEIGHT %s\n", getWidth(image), getHeight(image)).getBytes(UTF8));
-        imageOutput.write(String.format("DEPTH %s\n", getNumBands(image)).getBytes(UTF8));
+        imageOutput.write(String.format("WIDTH %s\nHEIGHT %s\n", getWidth(image), getHeight(image)).getBytes(UTF_8));
+        imageOutput.write(String.format("DEPTH %s\n", getNumBands(image)).getBytes(UTF_8));
 
         // TODO: maxSample (8 or16 bit)
-        imageOutput.write(String.format("MAXVAL %s\n", getMaxVal(image)).getBytes(UTF8));
+        imageOutput.write(String.format("MAXVAL %s\n", getMaxVal(image)).getBytes(UTF_8));
 
         // TODO: Determine tuple type based on input color model and image data
         TupleType tupleType = getNumBands(image) > 3 ? TupleType.RGB_ALPHA : TupleType.RGB;
-        imageOutput.write(String.format("TUPLTYPE %s\nENDHDR\n", tupleType).getBytes(UTF8));
+        imageOutput.write(String.format("TUPLTYPE %s\nENDHDR\n", tupleType).getBytes(UTF_8));
     }
 }

imageio/imageio-pnm/src/main/java/com/twelvemonkeys/imageio/plugins/pnm/PAMImageReaderSpi.java

@@ -0,0 +1,75 @@
+/*
+ * Copyright (c) 2020, Harald Kuhr
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * * Redistributions of source code must retain the above copyright notice, this
+ *   list of conditions and the following disclaimer.
+ *
+ * * Redistributions in binary form must reproduce the above copyright notice,
+ *   this list of conditions and the following disclaimer in the documentation
+ *   and/or other materials provided with the distribution.
+ *
+ * * Neither the name of the copyright holder nor the names of its
+ *   contributors may be used to endorse or promote products derived from
+ *   this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+package com.twelvemonkeys.imageio.plugins.pnm;
+
+import com.twelvemonkeys.imageio.spi.ImageReaderSpiBase;
+
+import javax.imageio.ImageReader;
+import javax.imageio.stream.ImageInputStream;
+import java.io.IOException;
+import java.util.Locale;
+
+public final class PAMImageReaderSpi extends ImageReaderSpiBase {
+
+    /**
+     * Creates a {@code PAMImageReaderSpi}.
+     */
+    public PAMImageReaderSpi() {
+        super(new PAMProviderInfo());
+    }
+
+    @Override
+    public boolean canDecodeInput(final Object source) throws IOException {
+        if (!(source instanceof ImageInputStream)) {
+            return false;
+        }
+
+        ImageInputStream stream = (ImageInputStream) source;
+        stream.mark();
+
+        try {
+            return stream.readShort() == PNM.PAM && stream.readInt() != PNM.XV_THUMBNAIL_MAGIC;
+        }
+        finally {
+            stream.reset();
+        }
+    }
+
+    @Override
+    public ImageReader createReaderInstance(final Object extension) {
+        return new PNMImageReader(this);
+    }
+
+    @Override
+    public String getDescription(final Locale locale) {
+        return "NetPBM Portable Arbitrary Map (PAM) image reader";
+    }
+}

imageio/imageio-pnm/src/main/java/com/twelvemonkeys/imageio/plugins/pnm/PAMImageWriterSpi.java

@@ -30,39 +30,19 @@
 
 package com.twelvemonkeys.imageio.plugins.pnm;
 
-import com.twelvemonkeys.imageio.spi.ProviderInfo;
+import com.twelvemonkeys.imageio.spi.ImageWriterSpiBase;
 
 import javax.imageio.ImageTypeSpecifier;
 import javax.imageio.ImageWriter;
-import javax.imageio.spi.ImageWriterSpi;
-import javax.imageio.stream.ImageOutputStream;
 import java.util.Locale;
 
-public final class PAMImageWriterSpi extends ImageWriterSpi {
+public final class PAMImageWriterSpi extends ImageWriterSpiBase {
 
     /**
      * Creates a {@code PAMImageWriterSpi}.
      */
     public PAMImageWriterSpi() {
-        this(new PNMProviderInfo());
-    }
-
-    private PAMImageWriterSpi(final ProviderInfo pProviderInfo) {
-        super(
-                pProviderInfo.getVendorName(),
-                pProviderInfo.getVersion(),
-                new String[] {"pam", "PAM"},
-                new String[] {"pam"},
-                new String[] {
-                        // No official IANA record exists, these are conventional
-                        "image/x-portable-arbitrarymap" // PAM
-                },
-                "com.twelvemonkeys.imageio.plugins.pnm.PNMImageWriter",
-                new Class[] {ImageOutputStream.class},
-                new String[] {"com.twelvemonkeys.imageio.plugins.pnm.PNMImageReaderSpi"},
-                true, null, null, null, null,
-                true, null, null, null, null
-        );
+        super(new PAMProviderInfo());
     }
 
     public boolean canEncodeImage(final ImageTypeSpecifier pType) {

imageio/imageio-pnm/src/main/java/com/twelvemonkeys/imageio/plugins/pnm/PAMProviderInfo.java

@@ -0,0 +1,72 @@
+/*
+ * Copyright (c) 2020, Harald Kuhr
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * * Redistributions of source code must retain the above copyright notice, this
+ *   list of conditions and the following disclaimer.
+ *
+ * * Redistributions in binary form must reproduce the above copyright notice,
+ *   this list of conditions and the following disclaimer in the documentation
+ *   and/or other materials provided with the distribution.
+ *
+ * * Neither the name of the copyright holder nor the names of its
+ *   contributors may be used to endorse or promote products derived from
+ *   this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+package com.twelvemonkeys.imageio.plugins.pnm;
+
+import com.twelvemonkeys.imageio.spi.ReaderWriterProviderInfo;
+
+/**
+ * PAMProviderInfo.
+ *
+ * @author <a href="mailto:harald.kuhr@gmail.com">Harald Kuhr</a>
+ * @author last modified by $Author: harald.kuhr$
+ * @version $Id: PAMProviderInfo.java,v 1.0 20/03/15 harald.kuhr Exp$
+ */
+class PAMProviderInfo extends ReaderWriterProviderInfo {
+    public PAMProviderInfo() {
+        super(PAMProviderInfo.class,
+                new String[] {
+                        "pam",
+                        "PAM"
+                },
+                new String[] {"pam"},
+                new String[] {
+                        // No official IANA record exists, these are conventional
+                        "image/x-portable-arbitrarymap"
+                },
+                "com.twelvemonkeys.imageio.plugins.pnm.PNMImageReader",
+                new String[] {
+                        "com.twelvemonkeys.imageio.plugins.pnm.PAMImageReaderSpi",
+                        "com.twelvemonkeys.imageio.plugins.pnm.PNMImageReaderSpi"
+                },
+                "com.twelvemonkeys.imageio.plugins.pnm.PNMImageWriter",
+                new String[] {
+                        "com.twelvemonkeys.imageio.plugins.pnm.PAMImageWriterSpi",
+                        "com.twelvemonkeys.imageio.plugins.pnm.PNMImageWriterSpi"
+                },
+                true, // supports standard stream metadata
+                null, null, // native stream format name and class
+                null, null, // extra stream formats
+                true, // supports standard image metadata
+                null, null,
+                null, null // extra image metadata formats
+        );
+    }
+}

imageio/imageio-pnm/src/main/java/com/twelvemonkeys/imageio/plugins/pnm/PFMHeaderParser.java

@@ -71,7 +71,7 @@ final class PFMHeaderParser extends HeaderParser {
         int height = 0;
         float maxSample = tupleType == TupleType.BLACKANDWHITE_WHITE_IS_ZERO ? 1 : 0; // PBM has no maxSample line
 
-        List<String> comments = new ArrayList<String>();
+        List<String> comments = new ArrayList<>();
 
         while (width == 0 || height == 0 || maxSample == 0) {
             String line = input.readLine();

imageio/imageio-pnm/src/main/java/com/twelvemonkeys/imageio/plugins/pnm/PNMHeader.java

@@ -45,6 +45,7 @@ final class PNMHeader {
     private final TupleType tupleType;
     private final int width;
     private final int height;
+    private final float maxSampleFloat;
     private final int maxSample;
 
     private final List<String> comments;
@@ -57,8 +58,9 @@ final class PNMHeader {
         this.height = isTrue(height > 0, height, "height must be greater than: %d");
         isTrue(depth == tupleType.getSamplesPerPixel(), depth, String.format("incorrect depth for %s, expected %d: %d", tupleType, tupleType.getSamplesPerPixel(), depth));
         this.maxSample = isTrue(tupleType.isValidMaxSample(maxSample), maxSample, "maxSample out of range: %d");
+        this.maxSampleFloat = this.maxSample;
 
-        this.comments = Collections.unmodifiableList(new ArrayList<String>(comments));
+        this.comments = Collections.unmodifiableList(new ArrayList<>(comments));
 
         byteOrder = ByteOrder.BIG_ENDIAN;
     }
@@ -70,10 +72,11 @@ final class PNMHeader {
         this.height = isTrue(height > 0, height, "height must be greater than: %d");
         isTrue(depth == tupleType.getSamplesPerPixel(), depth, String.format("incorrect depth for %s, expected %d: %d", tupleType, tupleType.getSamplesPerPixel(), depth));
 
-        this.maxSample = -1;
+        this.maxSample = 1;
+        this.maxSampleFloat = maxSample;
         this.byteOrder = byteOrder;
 
-        this.comments = Collections.unmodifiableList(new ArrayList<String>(comments));
+        this.comments = Collections.unmodifiableList(new ArrayList<>(comments));
     }
 
     private boolean isValidFileType(final short fileType) {
@@ -118,11 +121,8 @@ final class PNMHeader {
         if (maxSample <= PNM.MAX_VAL_16BIT) {
             return 16;
         }
-        if ((maxSample & 0xffffffffL) <= PNM.MAX_VAL_32BIT) {
-            return 32;
-        }
 
-        throw new AssertionError("maxSample exceeds 32 bit");
+        return 32;
     }
 
     public int getTransferType() {
@@ -135,11 +135,8 @@ final class PNMHeader {
         if (maxSample <= PNM.MAX_VAL_16BIT) {
             return DataBuffer.TYPE_USHORT;
         }
-        if ((maxSample & 0xffffffffL) <= PNM.MAX_VAL_32BIT) {
-            return DataBuffer.TYPE_INT;
-        }
 
-        throw new AssertionError("maxSample exceeds 32 bit");
+        return DataBuffer.TYPE_INT;
     }
 
     public List<String> getComments() {

imageio/imageio-pnm/src/main/java/com/twelvemonkeys/imageio/plugins/pnm/PNMHeaderParser.java

@@ -68,7 +68,7 @@ final class PNMHeaderParser extends HeaderParser {
         int height = 0;
         int maxSample = tupleType == TupleType.BLACKANDWHITE_WHITE_IS_ZERO ? 1 : 0; // PBM has no maxSample line
 
-        List<String> comments = new ArrayList<String>();
+        List<String> comments = new ArrayList<>();
 
         while (width == 0 || height == 0 || maxSample == 0) {
             String line = input.readLine();

imageio/imageio-pnm/src/main/java/com/twelvemonkeys/imageio/plugins/pnm/PNMHeaderWriter.java

@@ -35,6 +35,8 @@ import javax.imageio.spi.ImageWriterSpi;
 import javax.imageio.stream.ImageOutputStream;
 import java.io.IOException;
 
+import static java.nio.charset.StandardCharsets.UTF_8;
+
 final class PNMHeaderWriter extends HeaderWriter {
     public PNMHeaderWriter(final ImageOutputStream imageOutput) {
         super(imageOutput);
@@ -52,11 +54,11 @@ final class PNMHeaderWriter extends HeaderWriter {
         writeComments(image.getMetadata(), provider);
 
         // Dimensions (width/height)
-        imageOutput.write(String.format("%s %s\n", getWidth(image), getHeight(image)).getBytes(HeaderWriter.UTF8));
+        imageOutput.write(String.format("%s %s\n", getWidth(image), getHeight(image)).getBytes(UTF_8));
 
         // MaxSample
         if (type != PNM.PBM) {
-            imageOutput.write(String.format("%s\n", getMaxVal(image)).getBytes(HeaderWriter.UTF8));
+            imageOutput.write(String.format("%s\n", getMaxVal(image)).getBytes(UTF_8));
         }
     }
 }

imageio/imageio-pnm/src/main/java/com/twelvemonkeys/imageio/plugins/pnm/PNMImageReader.java

@@ -49,11 +49,13 @@ import java.io.DataInput;
 import java.io.DataInputStream;
 import java.io.File;
 import java.io.IOException;
-import java.nio.charset.Charset;
+import java.nio.charset.StandardCharsets;
 import java.util.ArrayList;
 import java.util.Iterator;
 import java.util.List;
 
+import static com.twelvemonkeys.imageio.util.IIOUtil.subsampleRow;
+
 public final class PNMImageReader extends ImageReaderBase {
     // TODO: Allow reading unknown tuple types as Raster!
     // TODO: readAsRenderedImage?
@@ -83,7 +85,7 @@ public final class PNMImageReader extends ImageReaderBase {
 
     static String asASCII(final short type) {
         byte[] asciiBytes = {(byte) ((type >> 8) & 0xff), (byte) (type & 0xff)};
-        return new String(asciiBytes, Charset.forName("ASCII"));
+        return new String(asciiBytes, StandardCharsets.US_ASCII);
     }
 
     @Override
@@ -150,7 +152,6 @@ public final class PNMImageReader extends ImageReaderBase {
 
             default:
                 // TODO: Allow reading unknown tuple types as Raster!
-
                 throw new AssertionError("Unknown PNM tuple type: " + header.getTupleType());
         }
     }
@@ -169,7 +170,7 @@ public final class PNMImageReader extends ImageReaderBase {
     public Iterator<ImageTypeSpecifier> getImageTypes(final int imageIndex) throws IOException {
         ImageTypeSpecifier rawType = getRawImageType(imageIndex);
 
-        List<ImageTypeSpecifier> specifiers = new ArrayList<ImageTypeSpecifier>();
+        List<ImageTypeSpecifier> specifiers = new ArrayList<>();
 
         switch (header.getTupleType()) {
             case RGB:
@@ -261,7 +262,7 @@ public final class PNMImageReader extends ImageReaderBase {
         for (int y = 0; y < height; y++) {
             switch (transferType) {
                 case DataBuffer.TYPE_BYTE:
-                    readRowByte(destRaster, clippedRow, colorConvert, rowDataByte, samplesPerPixel, input, y, srcRegion, xSub, ySub);
+                    readRowByte(destRaster, clippedRow, colorConvert, rowDataByte, header.getBitsPerSample(), samplesPerPixel, input, y, srcRegion, xSub, ySub);
                     break;
                 case DataBuffer.TYPE_USHORT:
                     readRowUShort(destRaster, clippedRow, rowDataUShort, samplesPerPixel, input, y, srcRegion, xSub, ySub);
@@ -339,7 +340,7 @@ public final class PNMImageReader extends ImageReaderBase {
                              Raster rowRaster,
                              final ColorConvertOp colorConvert,
                              final byte[] rowDataByte,
-                             final int samplesPerPixel,
+                             final int bitsPerSample, final int samplesPerPixel,
                              final DataInput input, final int y,
                              final Rectangle srcRegion,
                              final int xSub, final int ySub) throws IOException {
@@ -352,7 +353,9 @@ public final class PNMImageReader extends ImageReaderBase {
         input.readFully(rowDataByte);
 
         // Subsample (horizontal)
-        subsampleHorizontal(rowDataByte, rowDataByte.length, samplesPerPixel, xSub);
+        if (xSub > 1) {
+            subsampleRow(rowDataByte, srcRegion.x, srcRegion.width, rowDataByte, 0, samplesPerPixel, bitsPerSample, xSub);
+        }
 
         normalize(rowDataByte, 0, rowDataByte.length / xSub);
 
@@ -379,7 +382,9 @@ public final class PNMImageReader extends ImageReaderBase {
         readFully(input, rowDataUShort);
 
         // Subsample (horizontal)
-        subsampleHorizontal(rowDataUShort, rowDataUShort.length, samplesPerPixel, xSub);
+        if (xSub > 1) {
+            subsampleRow(rowDataUShort, srcRegion.x, srcRegion.width, rowDataUShort, 0, samplesPerPixel, 16, xSub);
+        }
 
         normalize(rowDataUShort);
 
@@ -402,11 +407,14 @@ public final class PNMImageReader extends ImageReaderBase {
         readFully(input, rowDataFloat);
 
         // Subsample (horizontal)
-        subsampleHorizontal(rowDataFloat, rowDataFloat.length, samplesPerPixel, xSub);
+        if (xSub > 1) {
+            subsampleRow(rowDataFloat, srcRegion.x, srcRegion.width, rowDataFloat, 0, samplesPerPixel, 32, xSub);
+        }
 
         normalize(rowDataFloat);
 
-        int destY = (y - srcRegion.y) / ySub;
+        // Note: PFM is stored bottom to top!
+        int destY = destRaster.getHeight() - 1 - (y - srcRegion.y) / ySub;
         // TODO: ColorConvertOp if needed
         destRaster.setDataElements(0, destY, rowRaster);
     }
@@ -437,19 +445,6 @@ public final class PNMImageReader extends ImageReaderBase {
         }
     }
 
-    @SuppressWarnings("SuspiciousSystemArraycopy")
-    private void subsampleHorizontal(final Object data, final int length, final int samplesPerPixel, final int xSub) {
-        if (xSub == 1) {
-            return;
-        }
-
-        // TODO: Super-special 1 bit subsampling handling for PBM
-
-        for (int x = 0; x < length / xSub; x += samplesPerPixel) {
-            System.arraycopy(data, x * xSub, data, x, samplesPerPixel);
-        }
-    }
-
     private void normalize(final byte[] rowData, final int start, final int length) {
         switch (header.getTupleType()) {
             case BLACKANDWHITE:
@@ -484,13 +479,9 @@ public final class PNMImageReader extends ImageReaderBase {
     }
 
     private void normalize(final float[] rowData) {
-        // TODO: Do the real thing, find min/max and normalize to range 0...255? But only if not reading raster..? Only support reading as raster?
         // Normalize
         for (int i = 0; i < rowData.length; i++) {
-//            if (rowData[i] > 275f /*header.getMaxSampleFloat()*/) {
-//                System.out.println("rowData[" + i + "]: " + rowData[i]);
-//            }
-//            rowData[i] = rowData[i] / 275f /*header.getMaxSampleFloat()*/;
+            rowData[i] = Math.min(1, rowData[i]); // Clamp
         }
     }
 

imageio/imageio-pnm/src/main/java/com/twelvemonkeys/imageio/plugins/pnm/PNMImageReaderSpi.java

@@ -30,51 +30,20 @@
 
 package com.twelvemonkeys.imageio.plugins.pnm;
 
-import com.twelvemonkeys.imageio.spi.ProviderInfo;
+import com.twelvemonkeys.imageio.spi.ImageReaderSpiBase;
 
 import javax.imageio.ImageReader;
-import javax.imageio.spi.ImageReaderSpi;
 import javax.imageio.stream.ImageInputStream;
 import java.io.IOException;
 import java.util.Locale;
 
-public final class PNMImageReaderSpi extends ImageReaderSpi {
+public final class PNMImageReaderSpi extends ImageReaderSpiBase {
 
     /**
      * Creates a {@code PNMImageReaderSpi}.
      */
     public PNMImageReaderSpi() {
-        this(new PNMProviderInfo());
-    }
-
-    private PNMImageReaderSpi(final ProviderInfo providerInfo) {
-        super(
-                providerInfo.getVendorName(),
-                providerInfo.getVersion(),
-                new String[] {
-                        "pnm", "pbm", "pgm", "ppm", "pam", "pfm",
-                        "PNM", "PBM", "PGM", "PPM", "PAM", "PFM"
-                },
-                new String[] {"pbm", "pgm", "ppm", "pam", "pfm"},
-                new String[] {
-                        // No official IANA record exists, these are conventional
-                        "image/x-portable-pixmap",
-                        "image/x-portable-anymap",
-                        "image/x-portable-arbitrarymap" // PAM
-                },
-                "com.twelvemonkeys.imageio.plugins.pnm.PNMImageReader",
-                new Class[] {ImageInputStream.class},
-                new String[] {
-                        "com.twelvemonkeys.imageio.plugins.pnm.PNMImageWriterSpi",
-                        "com.twelvemonkeys.imageio.plugins.pnm.PAMImageWriterSpi"
-                },
-                true, // supports standard stream metadata
-                null, null, // native stream format name and class
-                null, null, // extra stream formats
-                true, // supports standard image metadata
-                null, null,
-                null, null // extra image metadata formats
-        );
+        super(new PNMProviderInfo());
     }
 
     @Override
@@ -100,8 +69,6 @@ public final class PNMImageReaderSpi extends ImageReaderSpi {
                 case PNM.PFM_GRAY:
                 case PNM.PFM_RGB:
                     return true;
-                case PNM.PAM:
-                    return stream.readInt() != PNM.XV_THUMBNAIL_MAGIC;
                 default:
                     return false;
             }
@@ -112,12 +79,12 @@ public final class PNMImageReaderSpi extends ImageReaderSpi {
     }
 
     @Override
-    public ImageReader createReaderInstance(final Object extension) throws IOException {
+    public ImageReader createReaderInstance(final Object extension) {
         return new PNMImageReader(this);
     }
 
     @Override
     public String getDescription(final Locale locale) {
-        return "NetPBM Portable Any Map (PNM and PAM) image reader";
+        return "NetPBM Portable Any Map (PNM) image reader";
     }
 }

imageio/imageio-pnm/src/main/java/com/twelvemonkeys/imageio/plugins/pnm/PNMImageWriter.java

@@ -65,10 +65,11 @@ public final class PNMImageWriter extends ImageWriterBase {
 
     @Override
     public void write(final IIOMetadata streamMetadata, final IIOImage image, final ImageWriteParam param) throws IOException {
+        assertOutput();
         // TODO: Issue warning if streamMetadata is non-null?
         // TODO: Issue warning if IIOImage contains thumbnails or other data we can't store?
 
-        HeaderWriter.write(image, getOriginatingProvider(), imageOutput);
+        HeaderWriter.write(image, this, imageOutput);
 
         // TODO: Sub region
         // TODO: Subsampling

imageio/imageio-pnm/src/main/java/com/twelvemonkeys/imageio/plugins/pnm/PNMImageWriterSpi.java

@@ -30,15 +30,13 @@
 
 package com.twelvemonkeys.imageio.plugins.pnm;
 
-import com.twelvemonkeys.imageio.spi.ProviderInfo;
+import com.twelvemonkeys.imageio.spi.ImageWriterSpiBase;
 
 import javax.imageio.ImageTypeSpecifier;
 import javax.imageio.ImageWriter;
-import javax.imageio.spi.ImageWriterSpi;
-import javax.imageio.stream.ImageOutputStream;
 import java.util.Locale;
 
-public final class PNMImageWriterSpi extends ImageWriterSpi {
+public final class PNMImageWriterSpi extends ImageWriterSpiBase {
 
     // TODO: Consider one Spi for each sub-format, as it makes no sense for the writer to write PPM if client code requested PBM or PGM format.
     // ...Then again, what if user asks for PNM? :-P
@@ -47,29 +45,7 @@ public final class PNMImageWriterSpi extends ImageWriterSpi {
      * Creates a {@code PNMImageWriterSpi}.
      */
     public PNMImageWriterSpi() {
-        this(new PNMProviderInfo());
-    }
-
-    private PNMImageWriterSpi(final ProviderInfo pProviderInfo) {
-        super(
-                pProviderInfo.getVendorName(),
-                pProviderInfo.getVersion(),
-                new String[] {
-                        "pnm", "pbm", "pgm", "ppm",
-                        "PNM", "PBM", "PGM", "PPM"
-                },
-                new String[] {"pbm", "pgm", "ppm"},
-                new String[] {
-                        // No official IANA record exists, these are conventional
-                        "image/x-portable-pixmap",
-                        "image/x-portable-anymap"
-                },
-                "com.twelvemonkeys.imageio.plugins.pnm.PNMImageWriter",
-                new Class[] {ImageOutputStream.class},
-                new String[] {"com.twelvemonkeys.imageio.plugins.pnm.PNMImageReaderSpi"},
-                true, null, null, null, null,
-                true, null, null, null, null
-        );
+        super(new PNMProviderInfo());
     }
 
     public boolean canEncodeImage(final ImageTypeSpecifier pType) {