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      1 /*
      2  * Copyright (C) 2010 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 #ifndef NUPLAYER_DECODER_BASE_H_
     18 
     19 #define NUPLAYER_DECODER_BASE_H_
     20 
     21 #include "NuPlayer.h"
     22 
     23 #include <media/stagefright/foundation/AHandler.h>
     24 
     25 namespace android {
     26 
     27 struct ABuffer;
     28 struct MediaCodec;
     29 struct MediaBuffer;
     30 
     31 struct NuPlayer::DecoderBase : public AHandler {
     32     DecoderBase(const sp<AMessage> &notify);
     33 
     34     void configure(const sp<AMessage> &format);
     35     void init();
     36 
     37     void setRenderer(const sp<Renderer> &renderer);
     38 
     39     status_t getInputBuffers(Vector<sp<ABuffer> > *dstBuffers) const;
     40     void signalFlush();
     41     void signalResume(bool notifyComplete);
     42     void initiateShutdown();
     43 
     44     virtual void getStats(
     45             int64_t *mNumFramesTotal,
     46             int64_t *mNumFramesDropped) const = 0;
     47 
     48     enum {
     49         kWhatInputDiscontinuity  = 'inDi',
     50         kWhatVideoSizeChanged    = 'viSC',
     51         kWhatFlushCompleted      = 'flsC',
     52         kWhatShutdownCompleted   = 'shDC',
     53         kWhatResumeCompleted     = 'resC',
     54         kWhatEOS                 = 'eos ',
     55         kWhatError               = 'err ',
     56     };
     57 
     58 protected:
     59 
     60     virtual ~DecoderBase();
     61 
     62     virtual void onMessageReceived(const sp<AMessage> &msg);
     63 
     64     virtual void onConfigure(const sp<AMessage> &format) = 0;
     65     virtual void onSetRenderer(const sp<Renderer> &renderer) = 0;
     66     virtual void onGetInputBuffers(Vector<sp<ABuffer> > *dstBuffers) = 0;
     67     virtual void onResume(bool notifyComplete) = 0;
     68     virtual void onFlush(bool notifyComplete) = 0;
     69     virtual void onShutdown(bool notifyComplete) = 0;
     70 
     71     void onRequestInputBuffers();
     72     void scheduleRequestBuffers();
     73     virtual void doRequestBuffers() = 0;
     74     virtual void handleError(int32_t err);
     75 
     76     sp<AMessage> mNotify;
     77     int32_t mBufferGeneration;
     78 
     79 private:
     80     enum {
     81         kWhatConfigure           = 'conf',
     82         kWhatSetRenderer         = 'setR',
     83         kWhatGetInputBuffers     = 'gInB',
     84         kWhatRequestInputBuffers = 'reqB',
     85         kWhatFlush               = 'flus',
     86         kWhatShutdown            = 'shuD',
     87     };
     88 
     89     sp<ALooper> mDecoderLooper;
     90     bool mRequestInputBuffersPending;
     91 
     92     DISALLOW_EVIL_CONSTRUCTORS(DecoderBase);
     93 };
     94 
     95 }  // namespace android
     96 
     97 #endif  // NUPLAYER_DECODER_BASE_H_
     98