blob: 56e8860809188742fe58c69c2541e152a5f7633f (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
|
//#define LOG_NDEBUG 0
#define LOG_TAG "RepeaterSource"
#include <utils/Log.h>
#include "RepeaterSource.h"
#include <media/stagefright/foundation/ADebug.h>
#include <media/stagefright/foundation/ALooper.h>
#include <media/stagefright/foundation/AMessage.h>
#include <media/stagefright/MediaBuffer.h>
#include <media/stagefright/MetaData.h>
namespace android {
RepeaterSource::RepeaterSource(const sp<MediaSource> &source, double rateHz)
: mSource(source),
mRateHz(rateHz),
mBuffer(NULL),
mResult(OK),
mStartTimeUs(-1ll),
mFrameCount(0) {
}
RepeaterSource::~RepeaterSource() {
stop();
}
status_t RepeaterSource::start(MetaData *params) {
status_t err = mSource->start(params);
if (err != OK) {
return err;
}
mBuffer = NULL;
mResult = OK;
mStartTimeUs = -1ll;
mFrameCount = 0;
mLooper = new ALooper;
mLooper->setName("repeater_looper");
mLooper->start();
mReflector = new AHandlerReflector<RepeaterSource>(this);
mLooper->registerHandler(mReflector);
postRead();
return OK;
}
status_t RepeaterSource::stop() {
if (mLooper != NULL) {
mLooper->stop();
mLooper.clear();
mReflector.clear();
}
return mSource->stop();
}
sp<MetaData> RepeaterSource::getFormat() {
return mSource->getFormat();
}
status_t RepeaterSource::read(
MediaBuffer **buffer, const ReadOptions *options) {
int64_t seekTimeUs;
ReadOptions::SeekMode seekMode;
CHECK(options == NULL || !options->getSeekTo(&seekTimeUs, &seekMode));
int64_t bufferTimeUs = -1ll;
if (mStartTimeUs < 0ll) {
Mutex::Autolock autoLock(mLock);
while (mBuffer == NULL && mResult == OK) {
mCondition.wait(mLock);
}
mStartTimeUs = ALooper::GetNowUs();
bufferTimeUs = mStartTimeUs;
} else {
bufferTimeUs = mStartTimeUs + (mFrameCount * 1000000ll) / mRateHz;
int64_t nowUs = ALooper::GetNowUs();
int64_t delayUs = bufferTimeUs - nowUs;
if (delayUs > 0ll) {
usleep(delayUs);
}
}
Mutex::Autolock autoLock(mLock);
if (mResult != OK) {
CHECK(mBuffer == NULL);
return mResult;
}
mBuffer->add_ref();
*buffer = mBuffer;
(*buffer)->meta_data()->setInt64(kKeyTime, bufferTimeUs);
++mFrameCount;
return OK;
}
void RepeaterSource::postRead() {
(new AMessage(kWhatRead, mReflector->id()))->post();
}
void RepeaterSource::onMessageReceived(const sp<AMessage> &msg) {
switch (msg->what()) {
case kWhatRead:
{
MediaBuffer *buffer;
status_t err = mSource->read(&buffer);
Mutex::Autolock autoLock(mLock);
if (mBuffer != NULL) {
mBuffer->release();
mBuffer = NULL;
}
mBuffer = buffer;
mResult = err;
mCondition.broadcast();
if (err == OK) {
postRead();
}
break;
}
default:
TRESPASS();
}
}
} // namespace android
|
