Android 2.3 图库Gif支持实现攻略

    modified:   external/skia/include/images/SkMovie.h
    modified:   external/skia/src/images/SkMovie.cpp
    modified:   external/skia/src/images/SkMovie_gif.cpp
    modified:   frameworks/base/core/jni/android/graphics/Movie.cpp
    new file:   frameworks/base/graphics/java/android/graphics/GifDecoder.java
    modified:   frameworks/base/graphics/java/android/graphics/Movie.java
    modified:   packages/apps/Gallery3D/src/com/cooliris/media/CropImage.java
    modified:   packages/apps/Gallery3D/src/com/cooliris/media/DisplayItem.java
    modified:   packages/apps/Gallery3D/src/com/cooliris/media/GridDrawManager.java
    modified:   packages/apps/Gallery3D/src/com/cooliris/media/GridLayer.java
    modified:   packages/apps/Gallery3D/src/com/cooliris/media/MediaItem.java
    modified:   packages/apps/Gallery3D/src/com/cooliris/media/MediaItemTexture.java
    modified:   packages/apps/Gallery3D/src/com/cooliris/media/UriTexture.java
    modified:   packages/apps/Gallery3D/src/com/cooliris/media/Util.java
    modified:   packages/apps/Gallery3D/src/com/cooliris/wallpaper/RandomDataSource.java
    
diff --git a/external/skia/include/images/SkMovie.h b/external/skia/include/images/SkMovie.h
index 45962a5..2ed0a6e 100644
--- a/external/skia/include/images/SkMovie.h
+++ b/external/skia/include/images/SkMovie.h
@@ -53,6 +53,15 @@ public:
     */
     bool setTime(SkMSec);
 
+    //for add gif start Seven 
+    //the following 3 methods are intented for no one but Movie to use.
+    //please see Movie.cpp for information
+    virtual int getGifFrameDuration(int frameIndex);
+    virtual int getGifTotalFrameCount();
+    SkBitmap* createGifFrameBitmap();

+    virtual bool setCurrFrame(int frameIndex);
+    //for and gif end Seven 
+
     // return the right bitmap for the current time code
     const SkBitmap& bitmap();
     
diff --git a/external/skia/src/images/SkMovie.cpp b/external/skia/src/images/SkMovie.cpp
index 7186ed5..a90cef9 100644
--- a/external/skia/src/images/SkMovie.cpp
+++ b/external/skia/src/images/SkMovie.cpp
@@ -59,6 +59,55 @@ bool SkMovie::setTime(SkMSec time)
     return changed;
 }
 
+//for add gif begin Seven 
+int SkMovie::getGifFrameDuration(int frameIndex)
+{
+    return 0;
+}
+
+int SkMovie::getGifTotalFrameCount()
+{
+    return 0;
+}
+
+bool SkMovie::setCurrFrame(int frameIndex)
+{
+    return true;
+}
+