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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 class MediaBuffer;
     30 class Surface;
     31 
     32 struct NuPlayer::DecoderBase : public AHandler {
     33     DecoderBase(const sp<AMessage> &notify);
     34 
     35     void configure(const sp<AMessage> &format);
     36     void init();
     37     void setParameters(const sp<AMessage> &params);
     38 
     39     // Synchronous call to ensure decoder will not request or send out data.
     40     void pause();
     41 
     42     void setRenderer(const sp<Renderer> &renderer);
     43     virtual status_t setVideoSurface(const sp<Surface> &) { return INVALID_OPERATION; }
     44 
     45     status_t getInputBuffers(Vector<sp<ABuffer> > *dstBuffers) const;
     46     void signalFlush();
     47     void signalResume(bool notifyComplete);
     48     void initiateShutdown();
     49 
     50     virtual sp<AMessage> getStats() const {
     51         return mStats;
     52     }
     53 
     54     enum {
     55         kWhatInputDiscontinuity  = 'inDi',
     56         kWhatVideoSizeChanged    = 'viSC',
     57         kWhatFlushCompleted      = 'flsC',
     58         kWhatShutdownCompleted   = 'shDC',
     59         kWhatResumeCompleted     = 'resC',
     60         kWhatEOS                 = 'eos ',
     61         kWhatError               = 'err ',
     62     };
     63 
     64 protected:
     65 
     66     virtual ~DecoderBase();
     67 
     68     virtual void onMessageReceived(const sp<AMessage> &msg);
     69 
     70     virtual void onConfigure(const sp<AMessage> &format) = 0;
     71     virtual void onSetParameters(const sp<AMessage> &params) = 0;
     72     virtual void onSetRenderer(const sp<Renderer> &renderer) = 0;
     73     virtual void onGetInputBuffers(Vector<sp<ABuffer> > *dstBuffers) = 0;
     74     virtual void onResume(bool notifyComplete) = 0;
     75     virtual void onFlush() = 0;
     76     virtual void onShutdown(bool notifyComplete) = 0;
     77 
     78     void onRequestInputBuffers();
     79     virtual bool doRequestBuffers() = 0;
     80     virtual void handleError(int32_t err);
     81 
     82     sp<AMessage> mNotify;
     83     int32_t mBufferGeneration;
     84     bool mPaused;
     85     sp<AMessage> mStats;
     86 
     87 private:
     88     enum {
     89         kWhatConfigure           = 'conf',
     90         kWhatSetParameters       = 'setP',
     91         kWhatSetRenderer         = 'setR',
     92         kWhatPause               = 'paus',
     93         kWhatGetInputBuffers     = 'gInB',
     94         kWhatRequestInputBuffers = 'reqB',
     95         kWhatFlush               = 'flus',
     96         kWhatShutdown            = 'shuD',
     97     };
     98 
     99     sp<ALooper> mDecoderLooper;
    100     bool mRequestInputBuffersPending;
    101 
    102     DISALLOW_EVIL_CONSTRUCTORS(DecoderBase);
    103 };
    104 
    105 }  // namespace android
    106 
    107 #endif  // NUPLAYER_DECODER_BASE_H_
    108