NuPlayerDecoderBase.h revision 3bc667014875aba35102941b3997d242c303aa0d 
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
25namespace android {
26
27struct ABuffer;
28struct MediaCodec;
29class MediaBuffer;
30class Surface;
31
32struct 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
64protected:
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
87private:
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