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Diffstat (limited to 'media/libstagefright/filters/GraphicBufferListener.h')
-rw-r--r-- | media/libstagefright/filters/GraphicBufferListener.h | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/media/libstagefright/filters/GraphicBufferListener.h b/media/libstagefright/filters/GraphicBufferListener.h new file mode 100644 index 0000000..b3e0ee3 --- /dev/null +++ b/media/libstagefright/filters/GraphicBufferListener.h @@ -0,0 +1,70 @@ +/* + * Copyright (C) 2014 The Android Open Source Project + * + * 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. + */ + +#ifndef GRAPHIC_BUFFER_LISTENER_H_ +#define GRAPHIC_BUFFER_LISTENER_H_ + +#include <gui/BufferQueue.h> + +namespace android { + +struct AMessage; + +struct GraphicBufferListener : public BufferQueue::ConsumerListener { +public: + GraphicBufferListener() {}; + + status_t init( + const sp<AMessage> ¬ify, + size_t bufferWidth, size_t bufferHeight, size_t bufferCount); + + virtual void onFrameAvailable(const BufferItem& item); + virtual void onBuffersReleased(); + virtual void onSidebandStreamChanged(); + + // Returns the handle to the producer side of the BufferQueue. Buffers + // queued on this will be received by GraphicBufferListener. + sp<IGraphicBufferProducer> getIGraphicBufferProducer() const { + return mProducer; + } + + BufferQueue::BufferItem getBufferItem(); + sp<GraphicBuffer> getBuffer(BufferQueue::BufferItem item); + status_t releaseBuffer(BufferQueue::BufferItem item); + + enum { + kWhatFrameAvailable = 'frav', + }; + +private: + sp<AMessage> mNotify; + size_t mNumFramesAvailable; + + mutable Mutex mMutex; + + // Our BufferQueue interfaces. mProducer is passed to the producer through + // getIGraphicBufferProducer, and mConsumer is used internally to retrieve + // the buffers queued by the producer. + sp<IGraphicBufferProducer> mProducer; + sp<IGraphicBufferConsumer> mConsumer; + + // Cache of GraphicBuffers from the buffer queue. + sp<GraphicBuffer> mBufferSlot[BufferQueue::NUM_BUFFER_SLOTS]; +}; + +} // namespace android + +#endif // GRAPHIC_BUFFER_LISTENER_H |