Merge "Initialize mMetaData correctly, fix ref count" (7ef724dc) · Commits · e / devices / smdk4412 / android_frameworks_av

media/libmediaextractor/MediaBuffer.cpp

+7 −7

Original line number	Diff line number	Diff line
		@@ -39,7 +39,7 @@ MediaBuffer::MediaBuffer(void *data, size_t size)
		mRangeOffset(0),
		mRangeLength(size),
		mOwnsData(false),
		mMetaData(new MetaData),
		mMetaData(new MetaDataBase),
		mOriginal(NULL) {
		}

		@@ -51,7 +51,7 @@ MediaBuffer::MediaBuffer(size_t size)
		mRangeOffset(0),
		mRangeLength(size),
		mOwnsData(true),
		mMetaData(new MetaData),
		mMetaData(new MetaDataBase),
		mOriginal(NULL) {
		if (size < kSharedMemThreshold
		\|\| std::atomic_load_explicit(&mUseSharedMemory, std::memory_order_seq_cst) == 0) {
		@@ -84,7 +84,7 @@ MediaBuffer::MediaBuffer(const sp<ABuffer> &buffer)
		mRangeLength(mSize),
		mBuffer(buffer),
		mOwnsData(false),
		mMetaData(new MetaData),
		mMetaData(new MetaDataBase),
		mOriginal(NULL) {
		}

		@@ -96,7 +96,7 @@ void MediaBuffer::release() {
		return;
		}

		int prevCount = __sync_fetch_and_sub(&mRefCount, 1);
		int prevCount = mRefCount.fetch_sub(1);
		if (prevCount == 1) {
		if (mObserver == NULL) {
		delete this;
		@@ -110,13 +110,13 @@ void MediaBuffer::release() {

		void MediaBuffer::claim() {
		CHECK(mObserver != NULL);
		CHECK_EQ(mRefCount, 1);
		CHECK_EQ(mRefCount.load(std::memory_order_relaxed), 1);

		mRefCount = 0;
		mRefCount.store(0, std::memory_order_relaxed);
		}

		void MediaBuffer::add_ref() {
		(void) __sync_fetch_and_add(&mRefCount, 1);
		(void) mRefCount.fetch_add(1);
		}

		void *MediaBuffer::data() const {

+4 −2

Original line number	Diff line number	Diff line
		@@ -86,12 +86,14 @@ public:
		virtual MediaBufferBase *clone();

		// sum of localRefcount() and remoteRefcount()
		// Result should be treated as approximate unless the result precludes concurrent accesses.
		virtual int refcount() const {
		return localRefcount() + remoteRefcount();
		}

		// Result should be treated as approximate unless the result precludes concurrent accesses.
		virtual int localRefcount() const {
		return mRefCount;
		return mRefCount.load(std::memory_order_relaxed);
		}

		virtual int remoteRefcount() const {
		@@ -146,7 +148,7 @@ private:
		void claim();

		MediaBufferObserver *mObserver;
		int mRefCount;
		std::atomic<int> mRefCount;

		void *mData;
		size_t mSize, mRangeOffset, mRangeLength;