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XDemuxThread.cpp
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XDemuxThread.cpp
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#include "XDemuxThread.h"
#include "XDemux.h"
#include "XVideoThread.h"
#include "XAudioThread.h"
#include <iostream>
using namespace std;
XDemuxThread::XDemuxThread()
{
}
XDemuxThread::~XDemuxThread() {
isExit = true;
wait();
}
bool XDemuxThread::open(const char *url, IVideoCall *call) {
if ( !url || url[0] == '\n' ) {
return false;
}
mux.lock();
if ( !demux ) demux = new XDemux();
if ( !vt ) vt = new XVideoThread();
if ( !at ) at = new XAudioThread();
bool re = demux->open(url);
if ( !re ) {
mux.unlock();
cout << " demux->open(url) failed!" << endl;
return false;
}
// 启动当前线程
QThread::start();
if ( vt ) vt->start();
if ( at ) at->start();
// 打开视频解码器和处理线程
re = vt->open(demux->copyVParam(), call, demux->width, demux->height);
if ( !re ) {
cout << "vt->open failed!" << endl;
}
// 打开音频解码器和处理线程
re = at->open(demux->copyAParam(), demux->sampleRate, demux->channels);
if ( !re ) {
cout << "at->open failed!" << endl;
}
totalMs = demux->totalMs;
mux.unlock();
cout << "XDemuxThread::open success! " << re << endl;
return re;
}
// 启动所有线程
void XDemuxThread::start() {
// mux.lock();
// if ( !demux ) demux = new XDemux();
// if ( !vt ) vt = new XVideoThread();
// if ( !at ) at = new XAudioThread();
// // 启动当前线程
// QThread::start();
// if ( vt ) vt->start();
// if ( at ) at->start();
// mux.unlock();
}
void XDemuxThread::setPause(bool isPause) {
mux.lock();
this->isPause = isPause;
if ( at ) at->setPause(isPause);
if ( vt ) vt->setPause(isPause);
mux.unlock();
}
void XDemuxThread::run() {
while ( !isExit ) {
mux.lock();
if ( isPause ) {
mux.unlock();
msleep(5);
continue;
}
if ( !demux ) {
mux.unlock();
msleep(5);
continue;
}
// 音视频同步
if ( vt && at ) {
pts = at->pts;
vt->synpts = at->pts;
}
AVPacket *pkt = demux->read();
if ( !pkt ) {
mux.unlock();
msleep(5);
continue;
}
if ( demux->isAudio(pkt) ) {
// 音频
if ( at ) {
at->push(pkt);
}
} else {
// 视频
if ( vt ) {
vt->push(pkt);
}
}
mux.unlock();
msleep(1);
}
}
void XDemuxThread::seek(double pos) {
// 清理缓冲
clear();
mux.lock();
bool status = this->isPause;
mux.unlock();
// 暂停
setPause(true);
mux.lock();
if ( demux )
demux->seek(pos);
// 实际要显示的位置pts
long long seekPts = pos * demux->totalMs;
while (!isExit) {
AVPacket *pkt = demux->readVideo();
if ( !pkt ) break;
bool re = vt->repaintPts(pkt, seekPts);
// 如果解码到seekPts
if ( re ) {
this->pts = seekPts;
break;
}
}
mux.unlock();
// 恢复拖动前的状态
if ( !status ) {
setPause(false);
}
}
void XDemuxThread::clear() {
mux.lock();
if ( demux ) demux->clear();
if ( vt ) vt->clear();
if ( at ) at->clear();
mux.unlock();
}
// 关闭线程,清理资源
void XDemuxThread::close() {
isExit = true;
wait();
if ( vt ) vt->close();
if ( at ) at->close();
mux.lock();
delete vt;
delete at;
vt = NULL;
at = NULL;
mux.unlock();
}