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      1 /*
      2  * Copyright (C) 2012 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 #include <media/stagefright/foundation/AHandler.h>
     18 #include <media/stagefright/foundation/AString.h>
     19 #include <utils/KeyedVector.h>
     20 
     21 namespace android {
     22 
     23 struct ABuffer;
     24 struct ALooper;
     25 class AudioTrack;
     26 class IGraphicBufferProducer;
     27 struct MediaCodec;
     28 class MediaCodecBuffer;
     29 struct NuMediaExtractor;
     30 class Surface;
     31 
     32 struct SimplePlayer : public AHandler {
     33     SimplePlayer();
     34 
     35     status_t setDataSource(const char *path);
     36     status_t setSurface(const sp<IGraphicBufferProducer> &bufferProducer);
     37     status_t prepare();
     38     status_t start();
     39     status_t stop();
     40     status_t reset();
     41 
     42 protected:
     43     virtual ~SimplePlayer();
     44 
     45     virtual void onMessageReceived(const sp<AMessage> &msg);
     46 
     47 private:
     48     enum State {
     49         UNINITIALIZED,
     50         UNPREPARED,
     51         STOPPED,
     52         STARTED
     53     };
     54 
     55     enum {
     56         kWhatSetDataSource,
     57         kWhatSetSurface,
     58         kWhatPrepare,
     59         kWhatStart,
     60         kWhatStop,
     61         kWhatReset,
     62         kWhatDoMoreStuff,
     63     };
     64 
     65     struct BufferInfo {
     66         size_t mIndex;
     67         size_t mOffset;
     68         size_t mSize;
     69         int64_t mPresentationTimeUs;
     70         uint32_t mFlags;
     71     };
     72 
     73     struct CodecState
     74     {
     75         sp<MediaCodec> mCodec;
     76         Vector<sp<ABuffer> > mCSD;
     77         Vector<sp<MediaCodecBuffer> > mBuffers[2];
     78 
     79         List<size_t> mAvailInputBufferIndices;
     80         List<BufferInfo> mAvailOutputBufferInfos;
     81 
     82         sp<AudioTrack> mAudioTrack;
     83         uint32_t mNumFramesWritten;
     84     };
     85 
     86     State mState;
     87     AString mPath;
     88     sp<Surface> mSurface;
     89 
     90     sp<NuMediaExtractor> mExtractor;
     91     sp<ALooper> mCodecLooper;
     92     KeyedVector<size_t, CodecState> mStateByTrackIndex;
     93     int32_t mDoMoreStuffGeneration;
     94 
     95     int64_t mStartTimeRealUs;
     96 
     97     status_t onPrepare();
     98     status_t onStart();
     99     status_t onStop();
    100     status_t onReset();
    101     status_t onDoMoreStuff();
    102     status_t onOutputFormatChanged(size_t trackIndex, CodecState *state);
    103 
    104     void renderAudio(
    105             CodecState *state, BufferInfo *info, const sp<MediaCodecBuffer> &buffer);
    106 
    107     DISALLOW_EVIL_CONSTRUCTORS(SimplePlayer);
    108 };
    109 
    110 }  // namespace android
    111