NuPlayerDecoderBase.h revision 7137ec7e005a5a6e3c0edb91cfacf16a31f4bf6a 
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;
29struct MediaBuffer;
30
31struct NuPlayer::DecoderBase : public AHandler {
32    DecoderBase();
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();
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        kWhatEOS                 = 'eos ',
54        kWhatError               = 'err ',
55    };
56
57protected:
58
59    virtual ~DecoderBase();
60
61    virtual void onMessageReceived(const sp<AMessage> &msg);
62
63    virtual void onConfigure(const sp<AMessage> &format) = 0;
64    virtual void onSetRenderer(const sp<Renderer> &renderer) = 0;
65    virtual void onGetInputBuffers(Vector<sp<ABuffer> > *dstBuffers) = 0;
66    virtual void onResume() = 0;
67    virtual void onFlush(bool notifyComplete) = 0;
68    virtual void onShutdown(bool notifyComplete) = 0;
69
70    void onRequestInputBuffers();
71    void scheduleRequestBuffers();
72    virtual void doRequestBuffers() = 0;
73
74private:
75    enum {
76        kWhatConfigure           = 'conf',
77        kWhatSetRenderer         = 'setR',
78        kWhatGetInputBuffers     = 'gInB',
79        kWhatRequestInputBuffers = 'reqB',
80        kWhatFlush               = 'flus',
81        kWhatShutdown            = 'shuD',
82    };
83
84    sp<ALooper> mDecoderLooper;
85    bool mRequestInputBuffersPending;
86
87    DISALLOW_EVIL_CONSTRUCTORS(DecoderBase);
88};
89
90}  // namespace android
91
92#endif  // NUPLAYER_DECODER_BASE_H_
93