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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 MediaCodecBuffer;
     31 class Surface;
     32 
     33 struct NuPlayer::DecoderBase : public AHandler {
     34     explicit DecoderBase(const sp<AMessage> &notify);
     35 
     36     void configure(const sp<AMessage> &format);
     37     void init();
     38     void setParameters(const sp<AMessage> &params);
     39 
     40     // Synchronous call to ensure decoder will not request or send out data.
     41     void pause();
     42 
     43     void setRenderer(const sp<Renderer> &renderer);
     44     virtual status_t setVideoSurface(const sp<Surface> &) { return INVALID_OPERATION; }
     45 
     46     void signalFlush();
     47     void signalResume(bool notifyComplete);
     48     void initiateShutdown();
     49 
     50     virtual sp<AMessage> getStats() const {
     51         return mStats;
     52     }
     53 
     54     virtual status_t releaseCrypto() {
     55         return INVALID_OPERATION;
     56     }
     57 
     58     enum {
     59         kWhatInputDiscontinuity  = 'inDi',
     60         kWhatVideoSizeChanged    = 'viSC',
     61         kWhatFlushCompleted      = 'flsC',
     62         kWhatShutdownCompleted   = 'shDC',
     63         kWhatResumeCompleted     = 'resC',
     64         kWhatEOS                 = 'eos ',
     65         kWhatError               = 'err ',
     66     };
     67 
     68 protected:
     69 
     70     virtual ~DecoderBase();
     71 
     72     void stopLooper();
     73 
     74     virtual void onMessageReceived(const sp<AMessage> &msg);
     75 
     76     virtual void onConfigure(const sp<AMessage> &format) = 0;
     77     virtual void onSetParameters(const sp<AMessage> &params) = 0;
     78     virtual void onSetRenderer(const sp<Renderer> &renderer) = 0;
     79     virtual void onResume(bool notifyComplete) = 0;
     80     virtual void onFlush() = 0;
     81     virtual void onShutdown(bool notifyComplete) = 0;
     82 
     83     void onRequestInputBuffers();
     84     virtual bool doRequestBuffers() = 0;
     85     virtual void handleError(int32_t err);
     86 
     87     sp<AMessage> mNotify;
     88     int32_t mBufferGeneration;
     89     bool mPaused;
     90     sp<AMessage> mStats;
     91 
     92 private:
     93     enum {
     94         kWhatConfigure           = 'conf',
     95         kWhatSetParameters       = 'setP',
     96         kWhatSetRenderer         = 'setR',
     97         kWhatPause               = 'paus',
     98         kWhatRequestInputBuffers = 'reqB',
     99         kWhatFlush               = 'flus',
    100         kWhatShutdown            = 'shuD',
    101     };
    102 
    103     sp<ALooper> mDecoderLooper;
    104     bool mRequestInputBuffersPending;
    105 
    106     DISALLOW_EVIL_CONSTRUCTORS(DecoderBase);
    107 };
    108 
    109 }  // namespace android
    110 
    111 #endif  // NUPLAYER_DECODER_BASE_H_
    112