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> &notify,
+            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