NuPlayerRenderer.h revision d5e56231a598b180a1d898bb7dc61b75580e59a4 
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    enum Flags {
29        FLAG_REAL_TIME = 1,
30    };
31    Renderer(const sp<MediaPlayerBase::AudioSink> &sink,
32             const sp<AMessage> &notify,
33             uint32_t flags = 0);
34
35    void queueBuffer(
36            bool audio,
37            const sp<ABuffer> &buffer,
38            const sp<AMessage> &notifyConsumed);
39
40    void queueEOS(bool audio, status_t finalResult);
41
42    void flush(bool audio);
43
44    void signalTimeDiscontinuity();
45
46    void signalAudioSinkChanged();
47
48    void pause();
49    void resume();
50
51    enum {
52        kWhatEOS                 = 'eos ',
53        kWhatFlushComplete       = 'fluC',
54        kWhatPosition            = 'posi',
55        kWhatVideoRenderingStart = 'vdrd',
56    };
57
58protected:
59    virtual ~Renderer();
60
61    virtual void onMessageReceived(const sp<AMessage> &msg);
62
63private:
64    enum {
65        kWhatDrainAudioQueue    = 'draA',
66        kWhatDrainVideoQueue    = 'draV',
67        kWhatQueueBuffer        = 'queB',
68        kWhatQueueEOS           = 'qEOS',
69        kWhatFlush              = 'flus',
70        kWhatAudioSinkChanged   = 'auSC',
71        kWhatPause              = 'paus',
72        kWhatResume             = 'resm',
73    };
74
75    struct QueueEntry {
76        sp<ABuffer> mBuffer;
77        sp<AMessage> mNotifyConsumed;
78        size_t mOffset;
79        status_t mFinalResult;
80    };
81
82    static const int64_t kMinPositionUpdateDelayUs;
83
84    sp<MediaPlayerBase::AudioSink> mAudioSink;
85    sp<AMessage> mNotify;
86    uint32_t mFlags;
87    List<QueueEntry> mAudioQueue;
88    List<QueueEntry> mVideoQueue;
89    uint32_t mNumFramesWritten;
90
91    bool mDrainAudioQueuePending;
92    bool mDrainVideoQueuePending;
93    int32_t mAudioQueueGeneration;
94    int32_t mVideoQueueGeneration;
95
96    int64_t mAnchorTimeMediaUs;
97    int64_t mAnchorTimeRealUs;
98
99    Mutex mFlushLock;  // protects the following 2 member vars.
100    bool mFlushingAudio;
101    bool mFlushingVideo;
102
103    bool mHasAudio;
104    bool mHasVideo;
105    bool mSyncQueues;
106
107    bool mPaused;
108    bool mVideoRenderingStarted;
109
110    int64_t mLastPositionUpdateUs;
111    int64_t mVideoLateByUs;
112
113    bool onDrainAudioQueue();
114    void postDrainAudioQueue(int64_t delayUs = 0);
115
116    void onDrainVideoQueue();
117    void postDrainVideoQueue();
118
119    void onQueueBuffer(const sp<AMessage> &msg);
120    void onQueueEOS(const sp<AMessage> &msg);
121    void onFlush(const sp<AMessage> &msg);
122    void onAudioSinkChanged();
123    void onPause();
124    void onResume();
125
126    void notifyEOS(bool audio, status_t finalResult);
127    void notifyFlushComplete(bool audio);
128    void notifyPosition();
129    void notifyVideoLateBy(int64_t lateByUs);
130    void notifyVideoRenderingStart();
131
132    void flushQueue(List<QueueEntry> *queue);
133    bool dropBufferWhileFlushing(bool audio, const sp<AMessage> &msg);
134    void syncQueuesDone();
135
136    DISALLOW_EVIL_CONSTRUCTORS(Renderer);
137};
138
139}  // namespace android
140
141#endif  // NUPLAYER_RENDERER_H_
142