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Commit 2a2c5cd7 authored by Wei-Ta Chen's avatar Wei-Ta Chen
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Modify the decoding logic in the FD case when a purgeable flag is set, 

and lower the threshold of bitmap size for using ashmem().

For the decoding logic, we now go through the "non-purgeable" path if isShareable is false,
irrespective of the value of the purgeable flag.
parent b9a39cd3

core/jni/android/graphics/BitmapFactory.cpp

+5 −2
Original line number Diff line number Diff line
@@ -311,7 +311,7 @@ static SkPixelRef* installPixelRef(SkBitmap* bitmap, SkStream* stream, 
                                   int sampleSize) {

    SkPixelRef* pr;

    // only use ashmem for large images, since mmaps come at a price

    if (bitmap->getSize() >= 32 * 65536) {

    if (bitmap->getSize() >= 32 * 1024) {

        pr = new SkImageRef_ashmem(stream, bitmap->config(), sampleSize);

    } else {

        pr = new SkImageRef_GlobalPool(stream, bitmap->config(), sampleSize);
@@ -520,7 +520,10 @@ static jobject nativeDecodeFileDescriptor(JNIEnv* env, jobject clazz, 
    */

    AutoFDSeek as(descriptor);



    return doDecode(env, stream, padding, bitmapFactoryOptions, true);

    /* Allow purgeable iff we own the FD, i.e., in the puregeable and

       shareable case.

    */

    return doDecode(env, stream, padding, bitmapFactoryOptions, weOwnTheFD);

}



/*  make a deep copy of the asset, and return it as a stream, or NULL if there