mirror of
https://github.com/ZLMediaKit/ZLMediaKit.git
synced 2024-11-01 09:01:33 +08:00
247 lines
9.0 KiB
C++
247 lines
9.0 KiB
C++
/*
|
||
* MIT License
|
||
*
|
||
* Copyright (c) 2016-2019 xiongziliang <771730766@qq.com>
|
||
*
|
||
* This file is part of ZLMediaKit(https://github.com/xiongziliang/ZLMediaKit).
|
||
*
|
||
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
||
* of this software and associated documentation files (the "Software"), to deal
|
||
* in the Software without restriction, including without limitation the rights
|
||
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
||
* copies of the Software, and to permit persons to whom the Software is
|
||
* furnished to do so, subject to the following conditions:
|
||
*
|
||
* The above copyright notice and this permission notice shall be included in all
|
||
* copies or substantial portions of the Software.
|
||
*
|
||
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
||
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
||
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
||
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
||
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
||
* SOFTWARE.
|
||
*/
|
||
|
||
#include "FFmpegSource.h"
|
||
#include "Common/config.h"
|
||
#include "Common/MediaSource.h"
|
||
#include "Util/File.h"
|
||
#include "System.h"
|
||
|
||
namespace FFmpeg {
|
||
#define FFmpeg_FIELD "ffmpeg."
|
||
const char kBin[] = FFmpeg_FIELD"bin";
|
||
const char kCmd[] = FFmpeg_FIELD"cmd";
|
||
const char kLog[] = FFmpeg_FIELD"log";
|
||
|
||
onceToken token([]() {
|
||
mINI::Instance()[kBin] = trim(System::execute("which ffmpeg"));
|
||
mINI::Instance()[kCmd] = "%s -re -i %s -c:a aac -strict -2 -ar 44100 -ab 48k -c:v libx264 -f flv %s";
|
||
mINI::Instance()[kLog] = "./ffmpeg/ffmpeg.log";
|
||
});
|
||
}
|
||
|
||
FFmpegSource::FFmpegSource() {
|
||
_poller = EventPollerPool::Instance().getPoller();
|
||
}
|
||
|
||
FFmpegSource::~FFmpegSource() {
|
||
DebugL;
|
||
}
|
||
|
||
|
||
void FFmpegSource::play(const string &src_url,const string &dst_url,int timeout_ms,const onPlay &cb) {
|
||
GET_CONFIG(string,ffmpeg_bin,FFmpeg::kBin);
|
||
GET_CONFIG(string,ffmpeg_cmd,FFmpeg::kCmd);
|
||
GET_CONFIG(string,ffmpeg_log,FFmpeg::kLog);
|
||
|
||
_src_url = src_url;
|
||
_dst_url = dst_url;
|
||
_media_info.parse(dst_url);
|
||
|
||
char cmd[1024] = {0};
|
||
snprintf(cmd, sizeof(cmd),ffmpeg_cmd.data(),ffmpeg_bin.data(),src_url.data(),dst_url.data());
|
||
_process.run(cmd,File::absolutePath("",ffmpeg_log));
|
||
InfoL << cmd;
|
||
|
||
if(_media_info._host == "127.0.0.1"){
|
||
//推流给自己的，通过判断流是否注册上来判断是否正常
|
||
if(_media_info._schema != RTSP_SCHEMA && _media_info._schema != RTMP_SCHEMA){
|
||
cb(SockException(Err_other,"本服务只支持rtmp/rtsp推流"));
|
||
return;
|
||
}
|
||
weak_ptr<FFmpegSource> weakSelf = shared_from_this();
|
||
findAsync(timeout_ms,[cb,weakSelf,timeout_ms](const MediaSource::Ptr &src){
|
||
auto strongSelf = weakSelf.lock();
|
||
if(!strongSelf){
|
||
//自己已经销毁
|
||
return;
|
||
}
|
||
if(src){
|
||
//推流给自己成功
|
||
cb(SockException());
|
||
strongSelf->onGetMediaSource(src);
|
||
strongSelf->startTimer(timeout_ms);
|
||
return;
|
||
}
|
||
//推流失败
|
||
if(!strongSelf->_process.wait(false)){
|
||
//ffmpeg进程已经退出
|
||
cb(SockException(Err_other,StrPrinter << "ffmpeg已经退出,exit code = " << strongSelf->_process.exit_code()));
|
||
return;
|
||
}
|
||
//ffmpeg进程还在线，但是等待推流超时
|
||
cb(SockException(Err_other,"等待超时"));
|
||
});
|
||
} else{
|
||
//推流给其他服务器的，通过判断FFmpeg进程是否在线判断是否成功
|
||
weak_ptr<FFmpegSource> weakSelf = shared_from_this();
|
||
_timer = std::make_shared<Timer>(timeout_ms / 1000,[weakSelf,cb,timeout_ms](){
|
||
auto strongSelf = weakSelf.lock();
|
||
if(!strongSelf){
|
||
//自身已经销毁
|
||
return false;
|
||
}
|
||
//FFmpeg还在线，那么我们认为推流成功
|
||
if(strongSelf->_process.wait(false)){
|
||
cb(SockException());
|
||
strongSelf->startTimer(timeout_ms);
|
||
return false;
|
||
}
|
||
//ffmpeg进程已经退出
|
||
cb(SockException(Err_other,StrPrinter << "ffmpeg已经退出,exit code = " << strongSelf->_process.exit_code()));
|
||
return false;
|
||
},_poller);
|
||
}
|
||
}
|
||
|
||
void FFmpegSource::findAsync(int maxWaitMS, const function<void(const MediaSource::Ptr &src)> &cb) {
|
||
auto src = MediaSource::find(_media_info._schema,
|
||
_media_info._vhost,
|
||
_media_info._app,
|
||
_media_info._streamid,
|
||
false);
|
||
if(src || !maxWaitMS){
|
||
cb(src);
|
||
return;
|
||
}
|
||
|
||
void *listener_tag = this;
|
||
//若干秒后执行等待媒体注册超时回调
|
||
auto onRegistTimeout = _poller->doDelayTask(maxWaitMS,[cb,listener_tag](){
|
||
//取消监听该事件
|
||
NoticeCenter::Instance().delListener(listener_tag,Broadcast::kBroadcastMediaChanged);
|
||
cb(nullptr);
|
||
return 0;
|
||
});
|
||
|
||
weak_ptr<FFmpegSource> weakSelf = shared_from_this();
|
||
auto onRegist = [listener_tag,weakSelf,cb,onRegistTimeout](BroadcastMediaChangedArgs) {
|
||
auto strongSelf = weakSelf.lock();
|
||
if(!strongSelf) {
|
||
//本身已经销毁，取消延时任务
|
||
onRegistTimeout->cancel();
|
||
NoticeCenter::Instance().delListener(listener_tag,Broadcast::kBroadcastMediaChanged);
|
||
return;
|
||
}
|
||
|
||
if (!bRegist ||
|
||
sender.getSchema() != strongSelf->_media_info._schema ||
|
||
sender.getVhost() != strongSelf->_media_info._vhost ||
|
||
sender.getApp() != strongSelf->_media_info._app ||
|
||
sender.getId() != strongSelf->_media_info._streamid) {
|
||
//不是自己感兴趣的事件，忽略之
|
||
return;
|
||
}
|
||
|
||
//查找的流终于注册上了；取消延时任务，防止多次回调
|
||
onRegistTimeout->cancel();
|
||
//取消事件监听
|
||
NoticeCenter::Instance().delListener(listener_tag,Broadcast::kBroadcastMediaChanged);
|
||
|
||
//切换到自己的线程再回复
|
||
strongSelf->_poller->async([listener_tag,weakSelf,cb](){
|
||
auto strongSelf = weakSelf.lock();
|
||
if(!strongSelf) {
|
||
return;
|
||
}
|
||
//再找一遍媒体源，一般能找到
|
||
strongSelf->findAsync(0,cb);
|
||
}, false);
|
||
};
|
||
//监听媒体注册事件
|
||
NoticeCenter::Instance().addListener(listener_tag, Broadcast::kBroadcastMediaChanged, onRegist);
|
||
}
|
||
|
||
/**
|
||
* 定时检查媒体是否在线
|
||
*/
|
||
void FFmpegSource::startTimer(int timeout_ms) {
|
||
weak_ptr<FFmpegSource> weakSelf = shared_from_this();
|
||
_timer = std::make_shared<Timer>(1, [weakSelf, timeout_ms]() {
|
||
auto strongSelf = weakSelf.lock();
|
||
if (!strongSelf) {
|
||
//自身已经销毁
|
||
return false;
|
||
}
|
||
if (strongSelf->_media_info._host == "127.0.0.1") {
|
||
//推流给自己的，我们通过检查是否已经注册来判断FFmpeg是否工作正常
|
||
strongSelf->findAsync(0, [&](const MediaSource::Ptr &src) {
|
||
//同步查找流
|
||
if (!src) {
|
||
//流不在线，重新拉流
|
||
strongSelf->play(strongSelf->_src_url, strongSelf->_dst_url, timeout_ms, [](const SockException &) {});
|
||
}
|
||
});
|
||
} else {
|
||
//推流给其他服务器的，我们通过判断FFmpeg进程是否在线，如果FFmpeg推流中断，那么它应该会自动退出
|
||
if (!strongSelf->_process.wait(false)) {
|
||
//ffmpeg不在线，重新拉流
|
||
strongSelf->play(strongSelf->_src_url, strongSelf->_dst_url, timeout_ms, [](const SockException &) {});
|
||
}
|
||
}
|
||
return true;
|
||
}, _poller);
|
||
}
|
||
|
||
void FFmpegSource::setOnClose(const function<void()> &cb){
|
||
_onClose = cb;
|
||
}
|
||
|
||
bool FFmpegSource::close(MediaSource &sender, bool force) {
|
||
auto listener = _listener.lock();
|
||
if(listener && !listener->close(sender,force)){
|
||
//关闭失败
|
||
return false;
|
||
}
|
||
//该流无人观看，我们停止吧
|
||
if(_onClose){
|
||
_onClose();
|
||
}
|
||
return true;
|
||
}
|
||
|
||
void FFmpegSource::onNoneReader(MediaSource &sender) {
|
||
auto listener = _listener.lock();
|
||
if(listener){
|
||
listener->onNoneReader(sender);
|
||
}else{
|
||
MediaSourceEvent::onNoneReader(sender);
|
||
}
|
||
}
|
||
|
||
int FFmpegSource::totalReaderCount(MediaSource &sender) {
|
||
auto listener = _listener.lock();
|
||
if(listener){
|
||
return listener->totalReaderCount(sender);
|
||
}
|
||
return 0;
|
||
}
|
||
|
||
void FFmpegSource::onGetMediaSource(const MediaSource::Ptr &src) {
|
||
_listener = src->getListener();
|
||
src->setListener(shared_from_this());
|
||
}
|