init

.gitignore

@@ -1,12 +1,36 @@
-*.class
-
-# Mobile Tools for Java (J2ME)
-.mtj.tmp/
-
-# Package Files #
-*.jar
+# maven ignore
+target/
 *.war
-*.ear
+*.zip
+*.tar
+*.tar.gz
 
-# virtual machine crash logs, see http://www.java.com/en/download/help/error_hotspot.xml
-hs_err_pid*
+# eclipse ignore
+.settings/
+.project
+.classpath
+.tern-project
+
+# idea ignore
+.idea/
+*.ipr
+*.iml
+*.iws
+
+# temp ignore
+.svn/
+generated/
+.externalToolBuilders/
+logs/
+*.log
+*.cache
+*.diff
+*.patch
+*.tmp
+*.java~
+*.properties~
+*.xml~
+
+# system ignore
+.DS_Store
+Thumbs.db

README.md

@@ -1,2 +1,11 @@
 # j-webp
 Java Image I/O reader and writer for the Google WebP image format.
+
+基于[webp project of Luciad](https://bitbucket.org/luciad/webp-imageio) 0.4.2版本修改.
+
+实际上只修改了`com.luciad.imageio.webp.WebP.loadNativeLibrary`这一个方法.  
+因为按他默认的加载方式, 需要把native的so/dll/dylib等文件放到OS对应的`java.library.path`对应的目录才能加载到, 这会给部署带来一些不便.
+
+所以我们这里换成了[native-lib-loader](https://github.com/scijava/native-lib-loader)自动加载, 编译构建好的包里已经包含了各种OS上的native文件, 使用时会自动加载.
+
+具体使用方法可参看`src/main/java/example`下的源码.

pom.xml

@@ -0,0 +1,25 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+
+    <groupId>net.wangq</groupId>
+    <artifactId>webp</artifactId>
+    <version>1.0-SNAPSHOT</version>
+
+    <properties>
+        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+        <maven.compiler.source>1.7</maven.compiler.source>
+        <maven.compiler.target>1.7</maven.compiler.target>
+    </properties>
+
+    <dependencies>
+        <dependency>
+            <groupId>org.scijava</groupId>
+            <artifactId>native-lib-loader</artifactId>
+            <version>2.1.3</version>
+        </dependency>
+    </dependencies>
+
+</project>

src/main/java/com/luciad/imageio/webp/VP8StatusCode.java

@@ -0,0 +1,38 @@
+/*
+ * Copyright 2013 Luciad (http://www.luciad.com)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.luciad.imageio.webp;
+
+enum VP8StatusCode {
+  VP8_STATUS_OK,
+  VP8_STATUS_OUT_OF_MEMORY,
+  VP8_STATUS_INVALID_PARAM,
+  VP8_STATUS_BITSTREAM_ERROR,
+  VP8_STATUS_UNSUPPORTED_FEATURE,
+  VP8_STATUS_SUSPENDED,
+  VP8_STATUS_USER_ABORT,
+  VP8_STATUS_NOT_ENOUGH_DATA,;
+
+  private static VP8StatusCode[] VALUES = values();
+
+  public static VP8StatusCode getStatusCode( int aValue ) {
+    if ( aValue >= 0 && aValue < VALUES.length ) {
+      return VALUES[ aValue ];
+    }
+    else {
+      return null;
+    }
+  }
+}

src/main/java/com/luciad/imageio/webp/WebP.java

@@ -0,0 +1,428 @@
+/*
+ * Copyright 2013 Luciad (http://www.luciad.com)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.luciad.imageio.webp;
+
+import org.scijava.nativelib.NativeLibraryUtil;
+
+import java.awt.image.*;
+import java.io.IOException;
+import java.nio.ByteOrder;
+import java.util.Hashtable;
+
+final class WebP {
+  private static boolean NATIVE_LIBRARY_LOADED = false;
+
+  static synchronized void loadNativeLibrary() {
+    if ( !NATIVE_LIBRARY_LOADED ) {
+      NATIVE_LIBRARY_LOADED = true;
+      NativeLibraryUtil.loadNativeLibrary(WebP.class, "webp-imageio");
+    }
+  }
+
+  static {
+    loadNativeLibrary();
+  }
+
+  private WebP() {
+  }
+
+  public static BufferedImage decode( WebPReadParam aReadParam, byte[] aData, int aOffset, int aLength ) throws IOException {
+    if ( aReadParam == null ) {
+      throw new NullPointerException( "Decoder options may not be null" );
+    }
+
+    if ( aData == null ) {
+      throw new NullPointerException( "Input data may not be null" );
+    }
+
+    if ( aOffset + aLength > aData.length ) {
+      throw new IllegalArgumentException( "Offset/length exceeds array size" );
+    }
+
+    int[] out = new int[4];
+    int[] pixels = decode( aReadParam.fPointer, aData, aOffset, aLength, out, ByteOrder.nativeOrder().equals( ByteOrder.BIG_ENDIAN ) );
+    VP8StatusCode status = VP8StatusCode.getStatusCode( out[0] );
+    switch ( status ) {
+      case VP8_STATUS_OK:
+        break;
+      case VP8_STATUS_OUT_OF_MEMORY:
+        throw new OutOfMemoryError();
+      default:
+        throw new IOException( "Decode returned code " + status );
+    }
+
+    int width = out[1];
+    int height = out[2];
+    boolean alpha = out[3] != 0;
+
+    ColorModel colorModel;
+    if ( alpha ) {
+      colorModel = new DirectColorModel( 32, 0x00ff0000, 0x0000ff00, 0x000000ff, 0xff000000 );
+    } else {
+      colorModel = new DirectColorModel( 24, 0x00ff0000, 0x0000ff00, 0x000000ff, 0x00000000 );
+    }
+
+    SampleModel sampleModel = colorModel.createCompatibleSampleModel( width, height );
+    DataBufferInt db = new DataBufferInt( pixels, width * height );
+    WritableRaster raster = WritableRaster.createWritableRaster( sampleModel, db, null );
+
+    return new BufferedImage( colorModel, raster, false, new Hashtable<Object, Object>() );
+  }
+
+  private static native int[] decode( long aDecoderOptionsPointer, byte[] aData, int aOffset, int aLength, int[] aFlags, boolean aBigEndian );
+
+  public static int[] getInfo( byte[] aData, int aOffset, int aLength ) throws IOException {
+    int[] out = new int[2];
+    int result = getInfo( aData, aOffset, aLength, out );
+    if (result == 0) {
+      throw new IOException( "Invalid WebP data" );
+    }
+
+    return out;
+  }
+
+  private static native int getInfo( byte[] aData, int aOffset, int aLength, int[] aOut );
+
+  public static byte[] encode( WebPWriteParam aWriteParam, RenderedImage aImage ) throws IOException {
+    if ( aWriteParam == null ) {
+      throw new NullPointerException( "Encoder options may not be null" );
+    }
+
+    if ( aImage == null ) {
+      throw new NullPointerException( "Image may not be null" );
+    }
+
+    boolean encodeAlpha = hasTranslucency( aImage );
+    if ( encodeAlpha ) {
+      byte[] rgbaData = getRGBA( aImage );
+      return encodeRGBA( aWriteParam.getPointer(), rgbaData, aImage.getWidth(), aImage.getHeight(), aImage.getWidth() * 4 );
+    }
+    else {
+      byte[] rgbData = getRGB( aImage );
+      return encodeRGB( aWriteParam.getPointer(), rgbData, aImage.getWidth(), aImage.getHeight(), aImage.getWidth() * 3 );
+    }
+  }
+
+  private static native byte[] encodeRGBA( long aConfig, byte[] aRgbaData, int aWidth, int aHeight, int aStride );
+
+  private static native byte[] encodeRGB( long aConfig, byte[] aRgbaData, int aWidth, int aHeight, int aStride );
+
+  private static boolean hasTranslucency( RenderedImage aRi ) {
+    return aRi.getColorModel().hasAlpha();
+  }
+
+  private static int getShift( int aMask ) {
+    int shift = 0;
+    while ( ( ( aMask >> shift ) & 0x1 ) == 0 ) {
+      shift++;
+    }
+    return shift;
+  }
+
+  private static byte[] getRGB( RenderedImage aRi ) throws IOException {
+    int width = aRi.getWidth();
+    int height = aRi.getHeight();
+
+    ColorModel colorModel = aRi.getColorModel();
+    if ( colorModel instanceof ComponentColorModel ) {
+      ComponentSampleModel sampleModel = ( ComponentSampleModel ) aRi.getSampleModel();
+      int type = sampleModel.getTransferType();
+      if ( type == DataBuffer.TYPE_BYTE ) {
+        return extractComponentRGBByte( width, height, sampleModel, ( ( DataBufferByte ) aRi.getData().getDataBuffer() ) );
+      }
+      else if ( type == DataBuffer.TYPE_INT ) {
+        return extractComponentRGBInt( width, height, sampleModel, ( ( DataBufferInt ) aRi.getData().getDataBuffer() ) );
+      }
+      else {
+        throw new IOException( "Incompatible image: " + aRi );
+      }
+    }
+    else if ( colorModel instanceof DirectColorModel ) {
+      SinglePixelPackedSampleModel sampleModel = ( SinglePixelPackedSampleModel ) aRi.getSampleModel();
+      int type = sampleModel.getTransferType();
+      if ( type == DataBuffer.TYPE_INT ) {
+        return extractDirectRGBInt( width, height, ( DirectColorModel ) colorModel, sampleModel, ( ( DataBufferInt ) aRi.getData().getDataBuffer() ) );
+      }
+      else {
+        throw new IOException( "Incompatible image: " + aRi );
+      }
+    }
+
+    return extractGenericRGB( aRi, width, height, colorModel );
+  }
+
+  private static byte[] extractGenericRGB( RenderedImage aRi, int aWidth, int aHeight, ColorModel aColorModel ) {
+    Object dataElements = null;
+    byte[] rgbData = new byte[ aWidth * aHeight * 3 ];
+    for ( int b = 0, y = 0; y < aHeight; y++ ) {
+      for ( int x = 0; x < aWidth; x++, b += 3 ) {
+        dataElements = aRi.getData().getDataElements( x, y, dataElements );
+        rgbData[ b ] = ( byte ) aColorModel.getRed( dataElements );
+        rgbData[ b + 1 ] = ( byte ) aColorModel.getGreen( dataElements );
+        rgbData[ b + 2 ] = ( byte ) aColorModel.getBlue( dataElements );
+      }
+    }
+    return rgbData;
+  }
+
+  private static byte[] extractDirectRGBInt( int aWidth, int aHeight, DirectColorModel aColorModel, SinglePixelPackedSampleModel aSampleModel, DataBufferInt aDataBuffer ) {
+    byte[] out = new byte[ aWidth * aHeight * 3 ];
+
+    int rMask = aColorModel.getRedMask();
+    int gMask = aColorModel.getGreenMask();
+    int bMask = aColorModel.getBlueMask();
+    int rShift = getShift( rMask );
+    int gShift = getShift( gMask );
+    int bShift = getShift( bMask );
+    int[] bank = aDataBuffer.getBankData()[ 0 ];
+    int scanlineStride = aSampleModel.getScanlineStride();
+    int scanIx = 0;
+    for ( int b = 0, y = 0; y < aHeight; y++ ) {
+      int pixIx = scanIx;
+      for ( int x = 0; x < aWidth; x++, b += 3 ) {
+        int pixel = bank[ pixIx++ ];
+        out[ b ] = ( byte ) ( ( pixel & rMask ) >>> rShift );
+        out[ b + 1 ] = ( byte ) ( ( pixel & gMask ) >>> gShift );
+        out[ b + 2 ] = ( byte ) ( ( pixel & bMask ) >>> bShift );
+      }
+      scanIx += scanlineStride;
+    }
+    return out;
+  }
+
+  private static byte[] extractComponentRGBInt( int aWidth, int aHeight, ComponentSampleModel aSampleModel, DataBufferInt aDataBuffer ) {
+    byte[] out = new byte[ aWidth * aHeight * 3 ];
+
+    int[] bankIndices = aSampleModel.getBankIndices();
+    int[] rBank = aDataBuffer.getBankData()[ bankIndices[ 0 ] ];
+    int[] gBank = aDataBuffer.getBankData()[ bankIndices[ 1 ] ];
+    int[] bBank = aDataBuffer.getBankData()[ bankIndices[ 2 ] ];
+
+    int[] bankOffsets = aSampleModel.getBandOffsets();
+    int rScanIx = bankOffsets[ 0 ];
+    int gScanIx = bankOffsets[ 1 ];
+    int bScanIx = bankOffsets[ 2 ];
+
+    int pixelStride = aSampleModel.getPixelStride();
+    int scanlineStride = aSampleModel.getScanlineStride();
+    for ( int b = 0, y = 0; y < aHeight; y++ ) {
+      int rPixIx = rScanIx;
+      int gPixIx = gScanIx;
+      int bPixIx = bScanIx;
+      for ( int x = 0; x < aWidth; x++, b += 3 ) {
+        out[ b ] = ( byte ) rBank[ rPixIx ];
+        rPixIx += pixelStride;
+        out[ b + 1 ] = ( byte ) gBank[ gPixIx ];
+        gPixIx += pixelStride;
+        out[ b + 2 ] = ( byte ) bBank[ bPixIx ];
+        bPixIx += pixelStride;
+      }
+      rScanIx += scanlineStride;
+      gScanIx += scanlineStride;
+      bScanIx += scanlineStride;
+    }
+    return out;
+  }
+
+  private static byte[] extractComponentRGBByte( int aWidth, int aHeight, ComponentSampleModel aSampleModel, DataBufferByte aDataBuffer ) {
+    byte[] out = new byte[ aWidth * aHeight * 3 ];
+
+    int[] bankIndices = aSampleModel.getBankIndices();
+    byte[] rBank = aDataBuffer.getBankData()[ bankIndices[ 0 ] ];
+    byte[] gBank = aDataBuffer.getBankData()[ bankIndices[ 1 ] ];
+    byte[] bBank = aDataBuffer.getBankData()[ bankIndices[ 2 ] ];
+
+    int[] bankOffsets = aSampleModel.getBandOffsets();
+    int rScanIx = bankOffsets[ 0 ];
+    int gScanIx = bankOffsets[ 1 ];
+    int bScanIx = bankOffsets[ 2 ];
+
+    int pixelStride = aSampleModel.getPixelStride();
+    int scanlineStride = aSampleModel.getScanlineStride();
+    for ( int b = 0, y = 0; y < aHeight; y++ ) {
+      int rPixIx = rScanIx;
+      int gPixIx = gScanIx;
+      int bPixIx = bScanIx;
+      for ( int x = 0; x < aWidth; x++, b += 3 ) {
+        out[ b ] = rBank[ rPixIx ];
+        rPixIx += pixelStride;
+        out[ b + 1 ] = gBank[ gPixIx ];
+        gPixIx += pixelStride;
+        out[ b + 2 ] = bBank[ bPixIx ];
+        bPixIx += pixelStride;
+      }
+      rScanIx += scanlineStride;
+      gScanIx += scanlineStride;
+      bScanIx += scanlineStride;
+    }
+    return out;
+  }
+
+  private static byte[] getRGBA( RenderedImage aRi ) throws IOException {
+    int width = aRi.getWidth();
+    int height = aRi.getHeight();
+
+    ColorModel colorModel = aRi.getColorModel();
+    if ( colorModel instanceof ComponentColorModel ) {
+      ComponentSampleModel sampleModel = ( ComponentSampleModel ) aRi.getSampleModel();
+      int type = sampleModel.getTransferType();
+      if ( type == DataBuffer.TYPE_BYTE ) {
+        return extractComponentRGBAByte( width, height, sampleModel, ( ( DataBufferByte ) aRi.getData().getDataBuffer() ) );
+      }
+      else if ( type == DataBuffer.TYPE_INT ) {
+        return extractComponentRGBAInt( width, height, sampleModel, ( ( DataBufferInt ) aRi.getData().getDataBuffer() ) );
+      }
+      else {
+        throw new IOException( "Incompatible image: " + aRi );
+      }
+    }
+    else if ( colorModel instanceof DirectColorModel ) {
+      SinglePixelPackedSampleModel sampleModel = ( SinglePixelPackedSampleModel ) aRi.getSampleModel();
+      int type = sampleModel.getTransferType();
+      if ( type == DataBuffer.TYPE_INT ) {
+        return extractDirectRGBAInt( width, height, ( DirectColorModel ) colorModel, sampleModel, ( ( DataBufferInt ) aRi.getData().getDataBuffer() ) );
+      }
+      else {
+        throw new IOException( "Incompatible image: " + aRi );
+      }
+    }
+
+    return extractGenericRGBA( aRi, width, height, colorModel );
+  }
+
+  private static byte[] extractGenericRGBA( RenderedImage aRi, int aWidth, int aHeight, ColorModel aColorModel ) {
+    Object dataElements = null;
+    byte[] rgbData = new byte[ aWidth * aHeight * 4 ];
+    for ( int b = 0, y = 0; y < aHeight; y++ ) {
+      for ( int x = 0; x < aWidth; x++, b += 4 ) {
+        dataElements = aRi.getData().getDataElements( x, y, dataElements );
+        rgbData[ b ] = ( byte ) aColorModel.getRed( dataElements );
+        rgbData[ b + 1 ] = ( byte ) aColorModel.getGreen( dataElements );
+        rgbData[ b + 2 ] = ( byte ) aColorModel.getBlue( dataElements );
+        rgbData[ b + 3 ] = ( byte ) aColorModel.getAlpha( dataElements );
+      }
+    }
+    return rgbData;
+  }
+
+  private static byte[] extractDirectRGBAInt( int aWidth, int aHeight, DirectColorModel aColorModel, SinglePixelPackedSampleModel aSampleModel, DataBufferInt aDataBuffer ) {
+    byte[] out = new byte[ aWidth * aHeight * 4 ];
+
+    int rMask = aColorModel.getRedMask();
+    int gMask = aColorModel.getGreenMask();
+    int bMask = aColorModel.getBlueMask();
+    int aMask = aColorModel.getAlphaMask();
+    int rShift = getShift( rMask );
+    int gShift = getShift( gMask );
+    int bShift = getShift( bMask );
+    int aShift = getShift( aMask );
+    int[] bank = aDataBuffer.getBankData()[ 0 ];
+    int scanlineStride = aSampleModel.getScanlineStride();
+    int scanIx = 0;
+    for ( int b = 0, y = 0; y < aHeight; y++ ) {
+      int pixIx = scanIx;
+      for ( int x = 0; x < aWidth; x++, b += 4 ) {
+        int pixel = bank[ pixIx++ ];
+        out[ b ] = ( byte ) ( ( pixel & rMask ) >>> rShift );
+        out[ b + 1 ] = ( byte ) ( ( pixel & gMask ) >>> gShift );
+        out[ b + 2 ] = ( byte ) ( ( pixel & bMask ) >>> bShift );
+        out[ b + 3 ] = ( byte ) ( ( pixel & aMask ) >>> aShift );
+      }
+      scanIx += scanlineStride;
+    }
+    return out;
+  }
+
+  private static byte[] extractComponentRGBAInt( int aWidth, int aHeight, ComponentSampleModel aSampleModel, DataBufferInt aDataBuffer ) {
+    byte[] out = new byte[ aWidth * aHeight * 4 ];
+
+    int[] bankIndices = aSampleModel.getBankIndices();
+    int[] rBank = aDataBuffer.getBankData()[ bankIndices[ 0 ] ];
+    int[] gBank = aDataBuffer.getBankData()[ bankIndices[ 1 ] ];
+    int[] bBank = aDataBuffer.getBankData()[ bankIndices[ 2 ] ];
+    int[] aBank = aDataBuffer.getBankData()[ bankIndices[ 3 ] ];
+
+    int[] bankOffsets = aSampleModel.getBandOffsets();
+    int rScanIx = bankOffsets[ 0 ];
+    int gScanIx = bankOffsets[ 1 ];
+    int bScanIx = bankOffsets[ 2 ];
+    int aScanIx = bankOffsets[ 3 ];
+
+    int pixelStride = aSampleModel.getPixelStride();
+    int scanlineStride = aSampleModel.getScanlineStride();
+    for ( int b = 0, y = 0; y < aHeight; y++ ) {
+      int rPixIx = rScanIx;
+      int gPixIx = gScanIx;
+      int bPixIx = bScanIx;
+      int aPixIx = aScanIx;
+      for ( int x = 0; x < aWidth; x++, b += 4 ) {
+        out[ b ] = ( byte ) rBank[ rPixIx ];
+        rPixIx += pixelStride;
+        out[ b + 1 ] = ( byte ) gBank[ gPixIx ];
+        gPixIx += pixelStride;
+        out[ b + 2 ] = ( byte ) bBank[ bPixIx ];
+        bPixIx += pixelStride;
+        out[ b + 3 ] = ( byte ) aBank[ aPixIx ];
+        aPixIx += pixelStride;
+      }
+      rScanIx += scanlineStride;
+      gScanIx += scanlineStride;
+      bScanIx += scanlineStride;
+      aScanIx += scanlineStride;
+    }
+    return out;
+  }
+
+  private static byte[] extractComponentRGBAByte( int aWidth, int aHeight, ComponentSampleModel aSampleModel, DataBufferByte aDataBuffer ) {
+    byte[] out = new byte[ aWidth * aHeight * 4 ];
+
+    int[] bankIndices = aSampleModel.getBankIndices();
+    byte[] rBank = aDataBuffer.getBankData()[ bankIndices[ 0 ] ];
+    byte[] gBank = aDataBuffer.getBankData()[ bankIndices[ 1 ] ];
+    byte[] bBank = aDataBuffer.getBankData()[ bankIndices[ 2 ] ];
+    byte[] aBank = aDataBuffer.getBankData()[ bankIndices[ 3 ] ];
+
+    int[] bankOffsets = aSampleModel.getBandOffsets();
+    int rScanIx = bankOffsets[ 0 ];
+    int gScanIx = bankOffsets[ 1 ];
+    int bScanIx = bankOffsets[ 2 ];
+    int aScanIx = bankOffsets[ 3 ];
+
+    int pixelStride = aSampleModel.getPixelStride();
+    int scanlineStride = aSampleModel.getScanlineStride();
+    for ( int b = 0, y = 0; y < aHeight; y++ ) {
+      int rPixIx = rScanIx;
+      int gPixIx = gScanIx;
+      int bPixIx = bScanIx;
+      int aPixIx = aScanIx;
+      for ( int x = 0; x < aWidth; x++, b += 4 ) {
+        out[ b ] = rBank[ rPixIx ];
+        rPixIx += pixelStride;
+        out[ b + 1 ] = gBank[ gPixIx ];
+        gPixIx += pixelStride;
+        out[ b + 2 ] = bBank[ bPixIx ];
+        bPixIx += pixelStride;
+        out[ b + 3 ] = aBank[ aPixIx ];
+        aPixIx += pixelStride;
+      }
+      rScanIx += scanlineStride;
+      gScanIx += scanlineStride;
+      bScanIx += scanlineStride;
+      aScanIx += scanlineStride;
+    }
+    return out;
+  }
+}

src/main/java/com/luciad/imageio/webp/WebPImageReaderSpi.java

@@ -0,0 +1,106 @@
+/*
+ * Copyright 2013 Luciad (http://www.luciad.com)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.luciad.imageio.webp;
+
+import javax.imageio.ImageReader;
+import javax.imageio.spi.ImageReaderSpi;
+import javax.imageio.stream.ImageInputStream;
+import java.io.IOException;
+import java.nio.ByteOrder;
+import java.util.Arrays;
+import java.util.Locale;
+
+/**
+ *
+ */
+public class WebPImageReaderSpi extends ImageReaderSpi {
+  private static final byte[] RIFF = new byte[]{ 'R', 'I', 'F', 'F' };
+  private static final byte[] WEBP = new byte[]{ 'W', 'E', 'B', 'P' };
+  private static final byte[] VP8_ = new byte[]{ 'V', 'P', '8', ' ' };
+  private static final byte[] VP8X = new byte[]{ 'V', 'P', '8', 'X' };
+
+  public WebPImageReaderSpi() {
+    super(
+        "Luciad",
+        "1.0",
+        new String[]{ "WebP", "webp" },
+        new String[]{ "webp" },
+        new String[]{ "image/webp" },
+        WebPReader.class.getName(),
+        new Class[] { ImageInputStream.class },
+        new String[]{ WebPImageWriterSpi.class.getName() },
+        false,
+        null,
+        null,
+        null,
+        null,
+        false,
+        null,
+        null,
+        null,
+        null
+    );
+  }
+
+  @Override
+  public ImageReader createReaderInstance( Object extension ) throws IOException {
+    return new WebPReader( this );
+  }
+
+  @Override
+  public boolean canDecodeInput( Object source ) throws IOException {
+    if ( !( source instanceof ImageInputStream ) ) {
+      return false;
+    }
+
+    ImageInputStream stream = ( ImageInputStream ) source;
+    byte[] b = new byte[ 4 ];
+    ByteOrder oldByteOrder = stream.getByteOrder();
+    stream.mark();
+    stream.setByteOrder( ByteOrder.LITTLE_ENDIAN );
+
+    try {
+      stream.readFully( b );
+      if ( !Arrays.equals( b, RIFF ) ) {
+        return false;
+      }
+      long chunkLength = stream.readUnsignedInt();
+      long streamLength = stream.length();
+      if ( streamLength != -1 && streamLength != chunkLength + 8 ) {
+        return false;
+      }
+      stream.readFully( b );
+      if ( !Arrays.equals( b, WEBP ) ) {
+        return false;
+      }
+
+      stream.readFully( b );
+      if ( !Arrays.equals( b, VP8_ ) && !Arrays.equals( b, VP8X ) ) {
+        return false;
+      }
+    } finally {
+      stream.setByteOrder( oldByteOrder );
+      stream.reset();
+    }
+
+    return true;
+  }
+
+  @Override
+  public String getDescription( Locale locale ) {
+    return "WebP Reader";
+  }
+}

src/main/java/com/luciad/imageio/webp/WebPImageWriterSpi.java

@@ -0,0 +1,110 @@
+/*
+ * Copyright 2013 Luciad (http://www.luciad.com)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.luciad.imageio.webp;
+
+import javax.imageio.ImageTypeSpecifier;
+import javax.imageio.ImageWriter;
+import javax.imageio.spi.ImageWriterSpi;
+import javax.imageio.stream.ImageOutputStream;
+import java.awt.color.ColorSpace;
+import java.awt.image.ColorModel;
+import java.awt.image.ComponentColorModel;
+import java.awt.image.ComponentSampleModel;
+import java.awt.image.DataBuffer;
+import java.awt.image.DirectColorModel;
+import java.awt.image.SampleModel;
+import java.awt.image.SinglePixelPackedSampleModel;
+import java.io.IOException;
+import java.util.Locale;
+
+/**
+ *
+ */
+public class WebPImageWriterSpi extends ImageWriterSpi {
+  public WebPImageWriterSpi() {
+    super(
+        "Luciad",
+        "1.0",
+        new String[]{ "WebP", "webp" },
+        new String[]{ "webp" },
+        new String[]{ "image/webp" },
+        WebPReader.class.getName(),
+        new Class[]{ ImageOutputStream.class },
+        new String[]{ WebPImageReaderSpi.class.getName() },
+        false,
+        null,
+        null,
+        null,
+        null,
+        false,
+        null,
+        null,
+        null,
+        null
+    );
+  }
+
+  @Override
+  public boolean canEncodeImage( ImageTypeSpecifier type ) {
+    ColorModel colorModel = type.getColorModel();
+    SampleModel sampleModel = type.getSampleModel();
+    int transferType = sampleModel.getTransferType();
+
+    if ( colorModel instanceof ComponentColorModel ) {
+      if ( !( sampleModel instanceof ComponentSampleModel ) ) {
+        return false;
+      }
+
+      if ( transferType != DataBuffer.TYPE_BYTE && transferType != DataBuffer.TYPE_INT ) {
+        return false;
+      }
+    }
+    else if ( colorModel instanceof DirectColorModel ) {
+      if ( !( sampleModel instanceof SinglePixelPackedSampleModel ) ) {
+        return false;
+      }
+
+      if ( transferType != DataBuffer.TYPE_INT ) {
+        return false;
+      }
+    }
+
+    ColorSpace colorSpace = colorModel.getColorSpace();
+    if ( !( colorSpace.isCS_sRGB() ) ) {
+      return false;
+    }
+
+    int[] sampleSize = sampleModel.getSampleSize();
+    for ( int i = 0; i < sampleSize.length; i++ ) {
+      if ( sampleSize[ i ] > 8 ) {
+        return false;
+      }
+    }
+
+
+    return true;
+  }
+
+  @Override
+  public ImageWriter createWriterInstance( Object extension ) throws IOException {
+    return new WebPWriter( this );
+  }
+
+  @Override
+  public String getDescription( Locale locale ) {
+    return "WebP Writer";
+  }
+}

src/main/java/com/luciad/imageio/webp/WebPReadParam.java

@@ -0,0 +1,200 @@
+/*
+ * Copyright 2013 Luciad (http://www.luciad.com)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.luciad.imageio.webp;
+
+import javax.imageio.ImageReadParam;
+
+public final class WebPReadParam extends ImageReadParam {
+  static {
+    WebP.loadNativeLibrary();
+  }
+
+  long fPointer;
+
+  public WebPReadParam() {
+    fPointer = createDecoderOptions();
+    if ( fPointer == 0 ) {
+      throw new OutOfMemoryError();
+    }
+  }
+
+  @Override
+  protected void finalize() throws Throwable {
+    super.finalize();
+    deleteDecoderOptions( fPointer );
+    fPointer = 0L;
+  }
+
+  public int getCropHeight() {
+    return getCropHeight( fPointer );
+  }
+
+  public void setCropHeight( int aCropHeight ) {
+    setCropHeight( fPointer, aCropHeight );
+  }
+
+  public int getCropLeft() {
+    return getCropLeft( fPointer );
+  }
+
+  public void setCropLeft( int aCropLeft ) {
+    setCropLeft( fPointer, aCropLeft );
+  }
+
+  public int getCropTop() {
+    return getCropTop( fPointer );
+  }
+
+  public void setCropTop( int aCropTop ) {
+    setCropTop( fPointer, aCropTop );
+  }
+
+  public int getCropWidth() {
+    return getCropWidth( fPointer );
+  }
+
+  public void setCropWidth( int aCropWidth ) {
+    setCropWidth( fPointer, aCropWidth );
+  }
+
+  public boolean isForceRotation() {
+    return isForceRotation( fPointer );
+  }
+
+  public void setForceRotation( boolean aForceRotation ) {
+    setForceRotation( fPointer, aForceRotation );
+  }
+
+  public boolean isEnhancement() {
+    return !isNoEnhancement( fPointer );
+  }
+
+  public void setEnhancement( boolean aEnhancement ) {
+    setNoEnhancement( fPointer, !aEnhancement );
+  }
+
+  public boolean isFancyUpsampling() {
+    return !isNoFancyUpsampling( fPointer );
+  }
+
+  public void setFancyUpsampling( boolean aFancyUpsampling ) {
+    setNoFancyUpsampling( fPointer, !aFancyUpsampling );
+  }
+
+  public int getScaledHeight() {
+    return getScaledHeight( fPointer );
+  }
+
+  public void setScaledHeight( int aScaledHeight ) {
+    setScaledHeight( fPointer, aScaledHeight );
+  }
+
+  public int getScaledWidth() {
+    return getScaledWidth( fPointer );
+  }
+
+  public void setScaledWidth( int aScaledWidth ) {
+    setScaledWidth( fPointer, aScaledWidth );
+  }
+
+  public boolean isUseCropping() {
+    return isUseCropping( fPointer );
+  }
+
+  public void setUseCropping( boolean aUseCropping ) {
+    setUseCropping( fPointer, aUseCropping );
+  }
+
+  public boolean isUseScaling() {
+    return isUseScaling( fPointer );
+  }
+
+  public void setUseScaling( boolean aUseScaling ) {
+    setUseScaling( fPointer, aUseScaling );
+  }
+
+  public boolean isUseThreads() {
+    return isUseThreads( fPointer );
+  }
+
+  public void setUseThreads( boolean aUseThreads ) {
+    setUseThreads( fPointer, aUseThreads );
+  }
+
+  public boolean isBypassFiltering() {
+    return isBypassFiltering( fPointer );
+  }
+
+  public void setBypassFiltering( boolean aBypassFiltering ) {
+    setBypassFiltering( fPointer, aBypassFiltering );
+  }
+
+  private static native long createDecoderOptions();
+
+  private static native void deleteDecoderOptions( long aPointer );
+
+  private static native int getCropHeight( long aPointer );
+
+  private static native void setCropHeight( long aPointer, int aCropHeight );
+
+  private static native int getCropLeft( long aPointer );
+
+  private static native void setCropLeft( long aPointer, int aCropLeft );
+
+  private static native int getCropTop( long aPointer );
+
+  private static native void setCropTop( long aPointer, int aCropTop );
+
+  private static native int getCropWidth( long aPointer );
+
+  private static native void setCropWidth( long aPointer, int aCropWidth );
+
+  private static native boolean isForceRotation( long aPointer );
+
+  private static native void setForceRotation( long aPointer, boolean aForceRotation );
+
+  private static native boolean isNoEnhancement( long aPointer );
+
+  private static native void setNoEnhancement( long aPointer, boolean aNoEnhancement );
+
+  private static native boolean isNoFancyUpsampling( long aPointer );
+
+  private static native void setNoFancyUpsampling( long aPointer, boolean aFancyUpsampling );
+
+  private static native int getScaledHeight( long aPointer );
+
+  private static native void setScaledHeight( long aPointer, int aScaledHeight );
+
+  private static native int getScaledWidth( long aPointer );
+
+  private static native void setScaledWidth( long aPointer, int aScaledWidth );
+
+  private static native boolean isUseCropping( long aPointer );
+
+  private static native void setUseCropping( long aPointer, boolean aUseCropping );
+
+  private static native boolean isUseScaling( long aPointer );
+
+  private static native void setUseScaling( long aPointer, boolean aUseScaling );
+
+  private static native boolean isUseThreads( long aPointer );
+
+  private static native void setUseThreads( long aPointer, boolean aUseThreads );
+
+  private static native boolean isBypassFiltering( long aPointer );
+
+  private static native void setBypassFiltering( long aPointer, boolean aBypassFiltering );
+}

src/main/java/com/luciad/imageio/webp/WebPReader.java

@@ -0,0 +1,151 @@
+/*
+ * Copyright 2013 Luciad (http://www.luciad.com)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.luciad.imageio.webp;
+
+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 java.awt.image.BufferedImage;
+import java.io.ByteArrayOutputStream;
+import java.io.IOException;
+import java.util.Collections;
+import java.util.Iterator;
+
+class WebPReader extends ImageReader {
+  private byte[] fData;
+  private int fWidth;
+  private int fHeight;
+
+  WebPReader( ImageReaderSpi originatingProvider ) {
+    super( originatingProvider );
+  }
+
+  @Override
+  public void setInput( Object input, boolean seekForwardOnly, boolean ignoreMetadata ) {
+    super.setInput( input, seekForwardOnly, ignoreMetadata );
+    fData = null;
+    fWidth = -1;
+    fHeight = -1;
+  }
+
+  @Override
+  public int getNumImages( boolean allowSearch ) throws IOException {
+    return 1;
+  }
+
+  private void readHeader() throws IOException {
+    if ( fWidth != -1 && fHeight != -1 ) {
+      return;
+    }
+
+    readData();
+    int[] info = WebP.getInfo( fData, 0, fData.length );
+    fWidth = info[ 0 ];
+    fHeight = info[ 1 ];
+  }
+
+  private void readData() throws IOException {
+    if ( fData != null ) {
+      return;
+    }
+
+    ImageInputStream input = ( ImageInputStream ) getInput();
+    long length = input.length();
+    if ( length > Integer.MAX_VALUE ) {
+      throw new IOException( "Cannot read image of size " + length );
+    }
+
+    if ( input.getStreamPosition() != 0L ) {
+      if ( isSeekForwardOnly() ) {
+        throw new IOException();
+      }
+      else {
+        input.seek( 0 );
+      }
+    }
+
+    byte[] data;
+    if ( length > 0 ) {
+      data = new byte[ ( int ) length ];
+      input.readFully( data );
+    }
+    else {
+      ByteArrayOutputStream out = new ByteArrayOutputStream();
+      byte[] buffer = new byte[ 4096 ];
+      int bytesRead;
+      while ( ( bytesRead = input.read( buffer ) ) != -1 ) {
+        out.write( buffer, 0, bytesRead );
+      }
+      out.close();
+      data = out.toByteArray();
+    }
+    fData = data;
+  }
+
+  private void checkIndex( int imageIndex ) {
+    if ( imageIndex != 0 ) {
+      throw new IndexOutOfBoundsException( "Invalid image index: " + imageIndex );
+    }
+  }
+
+  @Override
+  public int getWidth( int imageIndex ) throws IOException {
+    checkIndex( imageIndex );
+    readHeader();
+    return fWidth;
+  }
+
+  @Override
+  public int getHeight( int imageIndex ) throws IOException {
+    checkIndex( imageIndex );
+    readHeader();
+    return fHeight;
+  }
+
+  @Override
+  public IIOMetadata getStreamMetadata() throws IOException {
+    return null;
+  }
+
+  @Override
+  public IIOMetadata getImageMetadata( int imageIndex ) throws IOException {
+    return null;
+  }
+
+  @Override
+  public Iterator<ImageTypeSpecifier> getImageTypes( int imageIndex ) throws IOException {
+    return Collections.singletonList(
+        ImageTypeSpecifier.createFromBufferedImageType( BufferedImage.TYPE_INT_ARGB )
+    ).iterator();
+  }
+
+  @Override
+  public ImageReadParam getDefaultReadParam() {
+    return new WebPReadParam();
+  }
+
+  @Override
+  public BufferedImage read( int imageIndex, ImageReadParam param ) throws IOException {
+    checkIndex( imageIndex );
+    readData();
+    readHeader();
+    WebPReadParam options = param != null ? (WebPReadParam) param : new WebPReadParam();
+    return WebP.decode( options, fData, 0, fData.length );
+  }
+}

src/main/java/com/luciad/imageio/webp/WebPWriteParam.java

@@ -0,0 +1,337 @@
+/*
+ * Copyright 2013 Luciad (http://www.luciad.com)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.luciad.imageio.webp;
+
+import javax.imageio.ImageWriteParam;
+import java.util.Locale;
+
+public class WebPWriteParam extends ImageWriteParam {
+  static {
+    WebP.loadNativeLibrary();
+  }
+
+  long fPointer;
+  private final int defaultLossless;
+
+  public WebPWriteParam( Locale aLocale ) {
+    super( aLocale );
+    fPointer = createConfig();
+    if ( fPointer == 0 ) {
+      throw new OutOfMemoryError();
+    }
+    defaultLossless = getLossless( fPointer );
+    canWriteCompressed = true;
+    compressionTypes = new String[]{
+        "Lossy",
+        "Lossless"
+    };
+    compressionType = compressionTypes[defaultLossless];
+    compressionQuality = getQuality( fPointer ) / 100f;
+    compressionMode = MODE_EXPLICIT;
+  }
+
+  @Override
+  protected void finalize() throws Throwable {
+    super.finalize();
+    deleteConfig( fPointer );
+    fPointer = 0L;
+  }
+
+  private static native long createConfig();
+
+  private static native void deleteConfig( long aPointer );
+
+  long getPointer() {
+    return fPointer;
+  }
+
+  @Override
+  public float getCompressionQuality() {
+    return super.getCompressionQuality();
+  }
+
+  @Override
+  public void setCompressionQuality( float quality ) {
+    super.setCompressionQuality( quality );
+    setQuality( fPointer, quality * 100f );
+  }
+
+  @Override
+  public void setCompressionType( String compressionType ) {
+    super.setCompressionType( compressionType );
+    for ( int i = 0; i < compressionTypes.length; i++ ) {
+      if ( compressionTypes[i].equals( compressionType ) ) {
+        setLossless( fPointer, i );
+        break;
+      }
+    }
+
+  }
+
+  @Override
+  public void unsetCompression() {
+    super.unsetCompression();
+    setLossless( fPointer, defaultLossless );
+  }
+
+  public int getTargetSize() {
+    return getTargetSize( fPointer );
+  }
+
+  public void setTargetSize( int aTargetSize ) {
+    setTargetSize( fPointer, aTargetSize );
+  }
+
+  public float getTargetPSNR() {
+    return getTargetPSNR( fPointer );
+  }
+
+  public void setTargetPSNR( float aTargetPSNR ) {
+    setTargetPSNR( fPointer, aTargetPSNR );
+  }
+
+  public int getMethod() {
+    return getMethod( fPointer );
+  }
+
+  public void setMethod( int aMethod ) {
+    setMethod( fPointer, aMethod );
+  }
+
+  public int getSegments() {
+    return getSegments( fPointer );
+  }
+
+  public void setSegments( int aSegments ) {
+    setSegments( fPointer, aSegments );
+  }
+
+  public int getSnsStrength() {
+    return getSnsStrength( fPointer );
+  }
+
+  public void setSnsStrength( int aSnsStrength ) {
+    setSnsStrength( fPointer, aSnsStrength );
+  }
+
+  public int getFilterStrength() {
+    return getFilterStrength( fPointer );
+  }
+
+  public void setFilterStrength( int aFilterStrength ) {
+    setFilterStrength( fPointer, aFilterStrength );
+  }
+
+  public int getFilterSharpness() {
+    return getFilterSharpness( fPointer );
+  }
+
+  public void setFilterSharpness( int aFilterSharpness ) {
+    setFilterSharpness( fPointer, aFilterSharpness );
+  }
+
+  public int getFilterType() {
+    return getFilterType( fPointer );
+  }
+
+  public void setFilterType( int aFilterType ) {
+    setFilterType( fPointer, aFilterType );
+  }
+
+  public boolean isAutoAdjustFilterStrength() {
+    return getAutofilter( fPointer ) != 0;
+  }
+
+  public void setAutoAdjustFilterStrength( boolean aAutofilter ) {
+    setAutofilter( fPointer, aAutofilter ? 1 : 0 );
+  }
+
+  public int getEntropyAnalysisPassCount() {
+    return getPass( fPointer );
+  }
+
+  public void setEntropyAnalysisPassCount( int aPass ) {
+    setPass( fPointer, aPass );
+  }
+
+  public boolean isShowCompressed() {
+    return getShowCompressed( fPointer ) != 0;
+  }
+
+  public void setShowCompressed( boolean aShowCompressed ) {
+    setShowCompressed( fPointer, aShowCompressed ? 1 : 0 );
+  }
+
+  public int getPreprocessing() {
+    return getPreprocessing( fPointer );
+  }
+
+  public void setPreprocessing( int aPreprocessing ) {
+    setPreprocessing( fPointer, aPreprocessing );
+  }
+
+  public int getPartitions() {
+    return getPartitions( fPointer );
+  }
+
+  public void setPartitions( int aPartitions ) {
+    setPartitions( fPointer, aPartitions );
+  }
+
+  public int getPartitionLimit() {
+    return getPartitionLimit( fPointer );
+  }
+
+  public void setPartitionLimit( int aPartitionLimit ) {
+    setPartitionLimit( fPointer, aPartitionLimit );
+  }
+
+  public int getAlphaCompression() {
+    return getAlphaCompression( fPointer );
+  }
+
+  public void setAlphaCompression( int aAlphaCompression ) {
+    setAlphaCompression( fPointer, aAlphaCompression );
+  }
+
+  public int getAlphaFiltering() {
+    return getAlphaFiltering( fPointer );
+  }
+
+  public void setAlphaFiltering( int aAlphaFiltering ) {
+    setAlphaFiltering( fPointer, aAlphaFiltering );
+  }
+
+  public int getAlphaQuality() {
+    return getAlphaQuality( fPointer );
+  }
+
+  public void setAlphaQuality( int aAlphaQuality ) {
+    setAlphaQuality( fPointer, aAlphaQuality );
+  }
+
+  public boolean isEmulateJpegSize() {
+    return getEmulateJpegSize( fPointer ) != 0;
+  }
+
+  public void setEmulateJpegSize( boolean aEmulateJpegSize ) {
+    setEmulateJpegSize( fPointer, aEmulateJpegSize ? 1 : 0 );
+  }
+
+  public int getThreadLevel() {
+    return getThreadLevel( fPointer );
+  }
+
+  public void setThreadLevel( int aThreadLevel ) {
+    setThreadLevel( fPointer, aThreadLevel );
+  }
+
+  public boolean isReduceMemoryUsage() {
+    return getLowMemory( fPointer ) != 0;
+  }
+
+  public void setReduceMemoryUsage( boolean aLowMemory ) {
+    setLowMemory( fPointer, aLowMemory ? 1 : 0 );
+  }
+
+  private static native float getQuality( long aPointer );
+
+  private static native void setQuality( long aPointer, float aQuality );
+
+  private static native int getTargetSize( long aPointer );
+
+  private static native void setTargetSize( long aPointer, int aTargetSize );
+
+  private static native float getTargetPSNR( long aPointer );
+
+  private static native void setTargetPSNR( long aPointer, float aTargetPSNR );
+
+  private static native int getMethod( long aPointer );
+
+  private static native void setMethod( long aPointer, int aMethod );
+
+  private static native int getSegments( long aPointer );
+
+  private static native void setSegments( long aPointer, int aSegments );
+
+  private static native int getSnsStrength( long aPointer );
+
+  private static native void setSnsStrength( long aPointer, int aSnsStrength );
+
+  private static native int getFilterStrength( long aPointer );
+
+  private static native void setFilterStrength( long aPointer, int aFilterStrength );
+
+  private static native int getFilterSharpness( long aPointer );
+
+  private static native void setFilterSharpness( long aPointer, int aFilterSharpness );
+
+  private static native int getFilterType( long aPointer );
+
+  private static native void setFilterType( long aPointer, int aFilterType );
+
+  private static native int getAutofilter( long aPointer );
+
+  private static native void setAutofilter( long aPointer, int aAutofilter );
+
+  private static native int getPass( long aPointer );
+
+  private static native void setPass( long aPointer, int aPass );
+
+  private static native int getShowCompressed( long aPointer );
+
+  private static native void setShowCompressed( long aPointer, int aShowCompressed );
+
+  private static native int getPreprocessing( long aPointer );
+
+  private static native void setPreprocessing( long aPointer, int aPreprocessing );
+
+  private static native int getPartitions( long aPointer );
+
+  private static native void setPartitions( long aPointer, int aPartitions );
+
+  private static native int getPartitionLimit( long aPointer );
+
+  private static native void setPartitionLimit( long aPointer, int aPartitionLimit );
+
+  private static native int getAlphaCompression( long aPointer );
+
+  private static native void setAlphaCompression( long aPointer, int aAlphaCompression );
+
+  private static native int getAlphaFiltering( long aPointer );
+
+  private static native void setAlphaFiltering( long aPointer, int aAlphaFiltering );
+
+  private static native int getAlphaQuality( long aPointer );
+
+  private static native void setAlphaQuality( long aPointer, int aAlphaQuality );
+
+  private static native int getLossless( long aPointer );
+
+  private static native void setLossless( long aPointer, int aLossless );
+
+  private static native int getEmulateJpegSize( long aPointer );
+
+  private static native void setEmulateJpegSize( long aPointer, int aEmulateJpegSize );
+
+  private static native int getThreadLevel( long aPointer );
+
+  private static native void setThreadLevel( long aPointer, int aThreadLevel );
+
+  private static native int getLowMemory( long aPointer );
+
+  private static native void setLowMemory( long aPointer, int aLowMemory );
+}

src/main/java/com/luciad/imageio/webp/WebPWriter.java

@@ -0,0 +1,72 @@
+/*
+ * Copyright 2013 Luciad (http://www.luciad.com)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.luciad.imageio.webp;
+
+import javax.imageio.IIOImage;
+import javax.imageio.ImageTypeSpecifier;
+import javax.imageio.ImageWriteParam;
+import javax.imageio.ImageWriter;
+import javax.imageio.metadata.IIOMetadata;
+import javax.imageio.spi.ImageWriterSpi;
+import javax.imageio.stream.ImageOutputStream;
+import java.awt.image.RenderedImage;
+import java.io.IOException;
+
+class WebPWriter extends ImageWriter {
+  WebPWriter( ImageWriterSpi originatingProvider ) {
+    super( originatingProvider );
+  }
+
+  @Override
+  public ImageWriteParam getDefaultWriteParam() {
+    return new WebPWriteParam( getLocale() );
+  }
+
+  @Override
+  public IIOMetadata convertImageMetadata( IIOMetadata inData, ImageTypeSpecifier imageType, ImageWriteParam param ) {
+    return null;
+  }
+
+  @Override
+  public IIOMetadata convertStreamMetadata( IIOMetadata inData, ImageWriteParam param ) {
+    return null;
+  }
+
+  @Override
+  public IIOMetadata getDefaultImageMetadata( ImageTypeSpecifier imageType, ImageWriteParam param ) {
+    return null;
+  }
+
+  @Override
+  public IIOMetadata getDefaultStreamMetadata( ImageWriteParam param ) {
+    return null;
+  }
+
+  @Override
+  public void write( IIOMetadata streamMetadata, IIOImage image, ImageWriteParam param ) throws IOException {
+    if ( param == null ) {
+      param = getDefaultWriteParam();
+    }
+
+    WebPWriteParam writeParam = (WebPWriteParam) param;
+
+    ImageOutputStream output = ( ImageOutputStream ) getOutput();
+    RenderedImage ri = image.getRenderedImage();
+
+    byte[] encodedData = WebP.encode(writeParam, ri);
+    output.write( encodedData );
+  }
+}

src/main/java/example/DecodingTest.java

@@ -0,0 +1,38 @@
+package example;
+
+import com.luciad.imageio.webp.WebPReadParam;
+
+import javax.imageio.ImageIO;
+import javax.imageio.ImageReader;
+import javax.imageio.stream.FileImageInputStream;
+import java.awt.image.BufferedImage;
+import java.io.File;
+import java.io.IOException;
+
+public class DecodingTest {
+
+    public static void main(String args[]) throws IOException {
+        String inputWebpPath = "test_pic/test.webp";
+        String outputJpgPath = "test_pic/test_.jpg";
+        String outputJpegPath = "test_pic/test_.jpeg";
+        String outputPngPath = "test_pic/test_.png";
+
+        // Obtain a WebP ImageReader instance
+        ImageReader reader = ImageIO.getImageReadersByMIMEType("image/webp").next();
+
+        // Configure decoding parameters
+        WebPReadParam readParam = new WebPReadParam();
+        readParam.setBypassFiltering(true);
+
+        // Configure the input on the ImageReader
+        reader.setInput(new FileImageInputStream(new File(inputWebpPath)));
+
+        // Decode the image
+        BufferedImage image = reader.read(0, readParam);
+
+        ImageIO.write(image, "png", new File(outputPngPath));
+        ImageIO.write(image, "jpg", new File(outputJpgPath));
+        ImageIO.write(image, "jpeg", new File(outputJpegPath));
+
+    }
+}

src/main/java/example/EncodingTest.java

@@ -0,0 +1,36 @@
+package example;
+
+import com.luciad.imageio.webp.WebPWriteParam;
+
+import javax.imageio.IIOImage;
+import javax.imageio.ImageIO;
+import javax.imageio.ImageWriter;
+import javax.imageio.stream.FileImageOutputStream;
+import java.awt.image.BufferedImage;
+import java.io.File;
+import java.io.IOException;
+
+public class EncodingTest {
+
+    public static void main(String args[]) throws IOException {
+        String inputPngPath = "test_pic/test.png";
+        String inputJpgPath = "test_pic/test.jpg";
+        String outputWebpPath = "test_pic/test_.webp";
+
+        // Obtain an image to encode from somewhere
+        BufferedImage image = ImageIO.read(new File(inputJpgPath));
+
+        // Obtain a WebP ImageWriter instance
+        ImageWriter writer = ImageIO.getImageWritersByMIMEType("image/webp").next();
+
+        // Configure encoding parameters
+        WebPWriteParam writeParam = new WebPWriteParam(writer.getLocale());
+        writeParam.setCompressionMode(WebPWriteParam.MODE_DEFAULT);
+
+        // Configure the output on the ImageWriter
+        writer.setOutput(new FileImageOutputStream(new File(outputWebpPath)));
+
+        // Encode
+        writer.write(null, new IIOImage(image, null, null), writeParam);
+    }
+}

src/main/resources/META-INF/services/javax.imageio.spi.ImageReaderSpi

@@ -0,0 +1 @@
+com.luciad.imageio.webp.WebPImageReaderSpi

src/main/resources/META-INF/services/javax.imageio.spi.ImageWriterSpi

@@ -0,0 +1 @@
+com.luciad.imageio.webp.WebPImageWriterSpi