Reuse frame decoder for sequential frame retrievel
Allow sequential frame retrieval to reuse the decoder without
re-init and re-seek.
Get rid of IMediaMetadataRetriever api that retrieves multiple
frames at a time, this method could hold up more memory than
what's needed, because the client side has to copy the frames
to a separate set of bitmaps anyways.
This change is needed to support animation Drawbles efficiently
which typically get one frame at a time.
bug: 120414514
test: cts MediaMetadataRetrieverTest, local tests that tests MetadataRetriever thumbnails
Change-Id: I09924408b51bc7491fc5dee121dce9a286c5911f
diff --git a/media/libmedia/mediametadataretriever.cpp b/media/libmedia/mediametadataretriever.cpp
index e61b04d..2ae76b3 100644
--- a/media/libmedia/mediametadataretriever.cpp
+++ b/media/libmedia/mediametadataretriever.cpp
@@ -179,18 +179,16 @@
index, colorFormat, left, top, right, bottom);
}
-status_t MediaMetadataRetriever::getFrameAtIndex(
- std::vector<sp<IMemory> > *frames,
- int frameIndex, int numFrames, int colorFormat, bool metaOnly) {
- ALOGV("getFrameAtIndex: frameIndex(%d), numFrames(%d), colorFormat(%d) metaOnly(%d)",
- frameIndex, numFrames, colorFormat, metaOnly);
+sp<IMemory> MediaMetadataRetriever::getFrameAtIndex(
+ int index, int colorFormat, bool metaOnly) {
+ ALOGV("getFrameAtIndex: index(%d), colorFormat(%d) metaOnly(%d)",
+ index, colorFormat, metaOnly);
Mutex::Autolock _l(mLock);
if (mRetriever == 0) {
ALOGE("retriever is not initialized");
- return INVALID_OPERATION;
+ return NULL;
}
- return mRetriever->getFrameAtIndex(
- frames, frameIndex, numFrames, colorFormat, metaOnly);
+ return mRetriever->getFrameAtIndex(index, colorFormat, metaOnly);
}
const char* MediaMetadataRetriever::extractMetadata(int keyCode)