frameworks/vavideodecoder/VAVideoDecoder.h

/*
* Copyright (c) 2009-2011 Intel Corporation.  All rights reserved.
*
* 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 VA_VIDEO_DECODER_H_
#define VA_VIDEO_DECODER_H_

#include <media/stagefright/MediaBuffer.h>
#include <media/stagefright/MediaSource.h>
#include <utils/Vector.h>

class IVideoDecoder;

namespace android {

struct VAVideoDecoder : public MediaSource,
                        public MediaBufferObserver {
    VAVideoDecoder(const sp<MediaSource> &source);

    virtual status_t start(MetaData *params);
    virtual status_t stop();
    virtual sp<MetaData> getFormat();
    virtual status_t read(MediaBuffer **buffer, const ReadOptions *options);
    virtual void signalBufferReturned(MediaBuffer* buffer) {}

protected:
    virtual ~VAVideoDecoder();

private:
    MediaBuffer *getOutputBuffer(bool bDraining = false);
    VAVideoDecoder(const VAVideoDecoder &);
    VAVideoDecoder &operator=(const VAVideoDecoder &);

private:
    enum {
        NUM_OF_MEDIA_BUFFER = 20,
    };
    sp<MediaSource> mSource;
    bool mStarted;
    bool mRawOutput;
    sp<MetaData> mFormat;
    Vector<MediaBuffer *> mFrames;
    MediaBuffer *mInputBuffer;
    int64_t mTargetTimeUs;
    uint32_t mFrameIndex;
    uint32_t mErrorCount;
    IVideoDecoder *mDecoder;
};

} // namespace android

#endif  // VA_VIDEO_DECODER_H_