/* * 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 -i %s -c:a aac -strict -2 -ar 44100 -ab 48k -c:v libx264 -f flv %s"; mINI::Instance()[kLog] = exeDir() + "ffmpeg/ffmpeg.log"; }); } FFmpegSource::FFmpegSource() { _poller = EventPollerPool::Instance().getPoller(); } FFmpegSource::~FFmpegSource() { NoticeCenter::Instance().delListener(this, Broadcast::kBroadcastStreamNoneReader); 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,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 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->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 weakSelf = shared_from_this(); _timer = std::make_shared(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 &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 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 || schema != strongSelf->_media_info._schema || vhost != strongSelf->_media_info._vhost || app != strongSelf->_media_info._app || stream != 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 weakSelf = shared_from_this(); _timer = std::make_shared(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); NoticeCenter::Instance().delListener(this, Broadcast::kBroadcastStreamNoneReader); NoticeCenter::Instance().addListener(this, Broadcast::kBroadcastStreamNoneReader,[weakSelf](BroadcastStreamNoneReaderArgs) { auto strongSelf = weakSelf.lock(); if (!strongSelf) { //自身已经销毁 return; } if(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; } //该流无人观看,我们停止吧 if(strongSelf->_onClose){ strongSelf->_onClose(); } }); } void FFmpegSource::setOnClose(const function &cb){ _onClose = cb; }