mirror of
https://github.com/ZLMediaKit/ZLMediaKit.git
synced 2024-10-06 12:13:49 +08:00
302 lines
11 KiB
C++
302 lines
11 KiB
C++
/*
|
||
* Copyright (c) 2016 The ZLMediaKit project authors. All Rights Reserved.
|
||
*
|
||
* This file is part of ZLMediaKit(https://github.com/xiongziliang/ZLMediaKit).
|
||
*
|
||
* Use of this source code is governed by MIT license that can be found in the
|
||
* LICENSE file in the root of the source tree. All contributing project authors
|
||
* may be found in the AUTHORS file in the root of the source tree.
|
||
*/
|
||
|
||
#include "FFmpegSource.h"
|
||
#include "Common/config.h"
|
||
#include "Common/MediaSource.h"
|
||
#include "Util/File.h"
|
||
#include "System.h"
|
||
#include "Thread/WorkThreadPool.h"
|
||
#include "Network/sockutil.h"
|
||
|
||
namespace FFmpeg {
|
||
#define FFmpeg_FIELD "ffmpeg."
|
||
const string kBin = FFmpeg_FIELD"bin";
|
||
const string kCmd = FFmpeg_FIELD"cmd";
|
||
const string kLog = FFmpeg_FIELD"log";
|
||
const string kSnap = FFmpeg_FIELD"snap";
|
||
|
||
onceToken token([]() {
|
||
#ifdef _WIN32
|
||
string ffmpeg_bin = trim(System::execute("where ffmpeg"));
|
||
#else
|
||
string ffmpeg_bin = trim(System::execute("which ffmpeg"));
|
||
#endif
|
||
//默认ffmpeg命令路径为环境变量中路径
|
||
mINI::Instance()[kBin] = ffmpeg_bin.empty() ? "ffmpeg" : ffmpeg_bin;
|
||
//ffmpeg日志保存路径
|
||
mINI::Instance()[kLog] = "./ffmpeg/ffmpeg.log";
|
||
mINI::Instance()[kCmd] = "%s -re -i %s -c:a aac -strict -2 -ar 44100 -ab 48k -c:v libx264 -f flv %s";
|
||
mINI::Instance()[kSnap] = "%s -i %s -y -f mjpeg -t 0.001 %s";
|
||
});
|
||
}
|
||
|
||
FFmpegSource::FFmpegSource() {
|
||
_poller = EventPollerPool::Instance().getPoller();
|
||
}
|
||
|
||
FFmpegSource::~FFmpegSource() {
|
||
DebugL;
|
||
}
|
||
|
||
static bool is_local_ip(const string &ip){
|
||
if (ip == "127.0.0.1" || ip == "localhost") {
|
||
return true;
|
||
}
|
||
auto ips = SockUtil::getInterfaceList();
|
||
for (auto &obj : ips) {
|
||
if (ip == obj["ip"]) {
|
||
return true;
|
||
}
|
||
}
|
||
return false;
|
||
}
|
||
|
||
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.empty() ? "" : File::absolutePath("",ffmpeg_log));
|
||
InfoL << cmd;
|
||
|
||
if (is_local_ip(_media_info._host)) {
|
||
//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);
|
||
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 (is_local_ip(strongSelf->_media_info._host)) {
|
||
//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, 这里原先是10秒超时，实际发现10秒不够，改成20秒了
|
||
if(strongSelf->_replay_ticker.elapsedTime() > 20 * 1000){
|
||
//上次重试时间超过10秒，那么再重试FFmpeg拉流
|
||
strongSelf->_replay_ticker.resetTime();
|
||
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, [weakSelf](const SockException &ex) {
|
||
if(!ex){
|
||
//没有错误
|
||
return;
|
||
}
|
||
auto strongSelf = weakSelf.lock();
|
||
if (!strongSelf) {
|
||
//自身已经销毁
|
||
return;
|
||
}
|
||
//上次重试时间超过10秒，那么再重试FFmpeg拉流
|
||
strongSelf->startTimer(10 * 1000);
|
||
});
|
||
}
|
||
}
|
||
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;
|
||
}
|
||
|
||
MediaOriginType FFmpegSource::getOriginType(MediaSource &sender) const{
|
||
return MediaOriginType::ffmpeg_pull;
|
||
}
|
||
|
||
string FFmpegSource::getOriginUrl(MediaSource &sender) const{
|
||
return _src_url;
|
||
}
|
||
|
||
std::shared_ptr<SockInfo> FFmpegSource::getOriginSock(MediaSource &sender) const {
|
||
return nullptr;
|
||
}
|
||
|
||
void FFmpegSource::onGetMediaSource(const MediaSource::Ptr &src) {
|
||
auto listener = src->getListener();
|
||
if (listener.lock().get() != this) {
|
||
//防止多次进入onGetMediaSource函数导致无效递归调用的bug
|
||
_listener = listener;
|
||
src->setListener(shared_from_this());
|
||
} else {
|
||
WarnL << "多次触发onGetMediaSource事件:"
|
||
<< src->getSchema() << "/"
|
||
<< src->getVhost() << "/"
|
||
<< src->getApp() << "/"
|
||
<< src->getId();
|
||
}
|
||
}
|
||
|
||
void FFmpegSnap::makeSnap(const string &play_url, const string &save_path, float timeout_sec, const function<void(bool)> &cb) {
|
||
GET_CONFIG(string,ffmpeg_bin,FFmpeg::kBin);
|
||
GET_CONFIG(string,ffmpeg_snap,FFmpeg::kSnap);
|
||
GET_CONFIG(string,ffmpeg_log,FFmpeg::kLog);
|
||
|
||
std::shared_ptr<Process> process = std::make_shared<Process>();
|
||
auto delayTask = EventPollerPool::Instance().getPoller()->doDelayTask(timeout_sec * 1000,[process,cb](){
|
||
if(process->wait(false)){
|
||
//FFmpeg进程还在运行，超时就关闭它
|
||
process->kill(2000);
|
||
}
|
||
return 0;
|
||
});
|
||
|
||
WorkThreadPool::Instance().getPoller()->async([process,play_url,save_path,delayTask,cb](){
|
||
char cmd[1024] = {0};
|
||
snprintf(cmd, sizeof(cmd),ffmpeg_snap.data(),ffmpeg_bin.data(),play_url.data(),save_path.data());
|
||
process->run(cmd,ffmpeg_log.empty() ? "" : File::absolutePath("",ffmpeg_log));
|
||
//等待FFmpeg进程退出
|
||
process->wait(true);
|
||
//FFmpeg进程退出了可以取消定时器了
|
||
delayTask->cancel();
|
||
//执行回调函数
|
||
cb(process->exit_code() == 0);
|
||
});
|
||
}
|
||
|