NuPlayerRenderer.h revision 3fe62150fa3dd6d25cb84aad80bc9e27ddd16c45 
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_RENDERER_H_
18
19#define NUPLAYER_RENDERER_H_
20
21#include "NuPlayer.h"
22
23namespace android {
24
25struct ABuffer;
26
27struct NuPlayer::Renderer : public AHandler {
28    Renderer(const sp<MediaPlayerBase::AudioSink> &sink,
29             const sp<AMessage> &notify);
30
31    void queueBuffer(
32            bool audio,
33            const sp<ABuffer> &buffer,
34            const sp<AMessage> &notifyConsumed);
35
36    void queueEOS(bool audio, status_t finalResult);
37
38    void flush(bool audio);
39
40    void signalTimeDiscontinuity();
41
42    void signalAudioSinkChanged();
43
44    void pause();
45    void resume();
46
47    enum {
48        kWhatEOS                = 'eos ',
49        kWhatFlushComplete      = 'fluC',
50        kWhatPosition           = 'posi',
51    };
52
53protected:
54    virtual ~Renderer();
55
56    virtual void onMessageReceived(const sp<AMessage> &msg);
57
58private:
59    enum {
60        kWhatDrainAudioQueue    = 'draA',
61        kWhatDrainVideoQueue    = 'draV',
62        kWhatQueueBuffer        = 'queB',
63        kWhatQueueEOS           = 'qEOS',
64        kWhatFlush              = 'flus',
65        kWhatAudioSinkChanged   = 'auSC',
66        kWhatPause              = 'paus',
67        kWhatResume             = 'resm',
68    };
69
70    struct QueueEntry {
71        sp<ABuffer> mBuffer;
72        sp<AMessage> mNotifyConsumed;
73        size_t mOffset;
74        status_t mFinalResult;
75    };
76
77    static const int64_t kMinPositionUpdateDelayUs;
78
79    sp<MediaPlayerBase::AudioSink> mAudioSink;
80    sp<AMessage> mNotify;
81    List<QueueEntry> mAudioQueue;
82    List<QueueEntry> mVideoQueue;
83    uint32_t mNumFramesWritten;
84
85    bool mDrainAudioQueuePending;
86    bool mDrainVideoQueuePending;
87    int32_t mAudioQueueGeneration;
88    int32_t mVideoQueueGeneration;
89
90    int64_t mAnchorTimeMediaUs;
91    int64_t mAnchorTimeRealUs;
92
93    Mutex mFlushLock;  // protects the following 2 member vars.
94    bool mFlushingAudio;
95    bool mFlushingVideo;
96
97    bool mHasAudio;
98    bool mHasVideo;
99    bool mSyncQueues;
100
101    bool mPaused;
102
103    int64_t mLastPositionUpdateUs;
104    int64_t mVideoLateByUs;
105
106    bool onDrainAudioQueue();
107    void postDrainAudioQueue(int64_t delayUs = 0);
108
109    void onDrainVideoQueue();
110    void postDrainVideoQueue();
111
112    void onQueueBuffer(const sp<AMessage> &msg);
113    void onQueueEOS(const sp<AMessage> &msg);
114    void onFlush(const sp<AMessage> &msg);
115    void onAudioSinkChanged();
116    void onPause();
117    void onResume();
118
119    void notifyEOS(bool audio, status_t finalResult);
120    void notifyFlushComplete(bool audio);
121    void notifyPosition();
122    void notifyVideoLateBy(int64_t lateByUs);
123
124    void flushQueue(List<QueueEntry> *queue);
125    bool dropBufferWhileFlushing(bool audio, const sp<AMessage> &msg);
126    void syncQueuesDone();
127
128    DISALLOW_EVIL_CONSTRUCTORS(Renderer);
129};
130
131}  // namespace android
132
133#endif  // NUPLAYER_RENDERER_H_
134