mirror of
https://github.com/ZLMediaKit/ZLMediaKit.git
synced 2024-11-26 04:31:37 +08:00
308 lines
9.2 KiB
C++
308 lines
9.2 KiB
C++
/*
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* Copyright (c) 2016 The ZLMediaKit project authors. All Rights Reserved.
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*
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* This file is part of ZLMediaKit(https://github.com/xia-chu/ZLMediaKit).
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*
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* Use of this source code is governed by MIT license that can be found in the
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* LICENSE file in the root of the source tree. All contributing project authors
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* may be found in the AUTHORS file in the root of the source tree.
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*/
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#if defined(ENABLE_RTPPROXY)
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#include "GB28181Process.h"
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#include "RtpProcess.h"
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#include "Http/HttpTSPlayer.h"
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#include "Util/File.h"
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#include "Common/config.h"
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using namespace std;
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using namespace toolkit;
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static constexpr char kRtpAppName[] = "rtp";
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//在创建_muxer对象前(也就是推流鉴权成功前)，需要先缓存frame，这样可以防止丢包，提高体验
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//但是同时需要控制缓冲长度，防止内存溢出。200帧数据，大概有10秒数据，应该足矣等待鉴权hook返回
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static constexpr size_t kMaxCachedFrame = 200;
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namespace mediakit {
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RtpProcess::RtpProcess(const string &stream_id) {
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_media_info.schema = kRtpAppName;
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_media_info.vhost = DEFAULT_VHOST;
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_media_info.app = kRtpAppName;
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_media_info.stream = stream_id;
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GET_CONFIG(string, dump_dir, RtpProxy::kDumpDir);
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{
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FILE *fp = !dump_dir.empty() ? File::create_file(File::absolutePath(_media_info.stream + ".rtp", dump_dir).data(), "wb") : nullptr;
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if (fp) {
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_save_file_rtp.reset(fp, [](FILE *fp) {
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fclose(fp);
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});
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}
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}
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{
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FILE *fp = !dump_dir.empty() ? File::create_file(File::absolutePath(_media_info.stream + ".video", dump_dir).data(), "wb") : nullptr;
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if (fp) {
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_save_file_video.reset(fp, [](FILE *fp) {
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fclose(fp);
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});
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}
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}
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}
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void RtpProcess::flush() {
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if (_process) {
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_process->flush();
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}
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}
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RtpProcess::~RtpProcess() {
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uint64_t duration = (_last_frame_time.createdTime() - _last_frame_time.elapsedTime()) / 1000;
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WarnP(this) << "RTP推流器("
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<< _media_info.shortUrl()
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<< ")断开,耗时(s):" << duration;
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//流量统计事件广播
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GET_CONFIG(uint32_t, iFlowThreshold, General::kFlowThreshold);
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if (_total_bytes >= iFlowThreshold * 1024) {
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try {
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NoticeCenter::Instance().emitEvent(Broadcast::kBroadcastFlowReport, _media_info, _total_bytes, duration, false, static_cast<SockInfo &>(*this));
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} catch (std::exception &ex) {
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WarnL << "Exception occurred: " << ex.what();
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}
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}
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}
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bool RtpProcess::inputRtp(bool is_udp, const Socket::Ptr &sock, const char *data, size_t len, const struct sockaddr *addr, uint64_t *dts_out) {
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if (!isRtp(data, len)) {
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WarnP(this) << "Not rtp packet";
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return false;
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}
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if (_sock != sock) {
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// 第一次运行本函数
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bool first = !_sock;
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_sock = sock;
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_addr.reset(new sockaddr_storage(*((sockaddr_storage *)addr)));
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if (first) {
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emitOnPublish();
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}
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}
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_total_bytes += len;
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if (_save_file_rtp) {
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uint16_t size = (uint16_t)len;
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size = htons(size);
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fwrite((uint8_t *) &size, 2, 1, _save_file_rtp.get());
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fwrite((uint8_t *) data, len, 1, _save_file_rtp.get());
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}
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if (!_process) {
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_process = std::make_shared<GB28181Process>(_media_info, this);
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}
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auto header = (RtpHeader *) data;
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onRtp(ntohs(header->seq), ntohl(header->stamp), 0/*不发送sr,所以可以设置为0*/ , 90000/*ps/ts流时间戳按照90K采样率*/, len);
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GET_CONFIG(string, dump_dir, RtpProxy::kDumpDir);
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if (_muxer && !_muxer->isEnabled() && !dts_out && dump_dir.empty()) {
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//无人访问、且不取时间戳、不导出调试文件时，我们可以直接丢弃数据
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_last_frame_time.resetTime();
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return false;
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}
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bool ret = _process ? _process->inputRtp(is_udp, data, len) : false;
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if (dts_out) {
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*dts_out = _dts;
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}
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return ret;
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}
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bool RtpProcess::inputFrame(const Frame::Ptr &frame) {
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_dts = frame->dts();
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if (_save_file_video && frame->getTrackType() == TrackVideo) {
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fwrite((uint8_t *) frame->data(), frame->size(), 1, _save_file_video.get());
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}
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if (_muxer) {
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_last_frame_time.resetTime();
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return _muxer->inputFrame(frame);
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}
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if (_cached_func.size() > kMaxCachedFrame) {
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WarnL << "cached frame of track(" << frame->getCodecName() << ") is too much, now dropped, please check your on_publish hook url in config.ini file";
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return false;
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}
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auto frame_cached = Frame::getCacheAbleFrame(frame);
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lock_guard<recursive_mutex> lck(_func_mtx);
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_cached_func.emplace_back([this, frame_cached]() {
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_last_frame_time.resetTime();
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_muxer->inputFrame(frame_cached);
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});
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return true;
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}
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bool RtpProcess::addTrack(const Track::Ptr &track) {
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if (_muxer) {
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return _muxer->addTrack(track);
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}
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lock_guard<recursive_mutex> lck(_func_mtx);
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_cached_func.emplace_back([this, track]() {
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_muxer->addTrack(track);
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});
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return true;
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}
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void RtpProcess::addTrackCompleted() {
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if (_muxer) {
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_muxer->addTrackCompleted();
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} else {
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lock_guard<recursive_mutex> lck(_func_mtx);
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_cached_func.emplace_back([this]() {
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_muxer->addTrackCompleted();
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});
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}
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}
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void RtpProcess::doCachedFunc() {
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lock_guard<recursive_mutex> lck(_func_mtx);
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for (auto &func : _cached_func) {
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func();
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}
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_cached_func.clear();
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}
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bool RtpProcess::alive() {
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if (_stop_rtp_check.load()) {
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if(_last_check_alive.elapsedTime() > 5 * 60 * 1000){
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//最多暂停5分钟的rtp超时检测，因为NAT映射有效期一般不会太长
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_stop_rtp_check = false;
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} else {
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return true;
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}
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}
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_last_check_alive.resetTime();
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GET_CONFIG(uint64_t, timeoutSec, RtpProxy::kTimeoutSec)
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if (_last_frame_time.elapsedTime() / 1000 < timeoutSec) {
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return true;
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}
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return false;
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}
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void RtpProcess::setStopCheckRtp(bool is_check){
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_stop_rtp_check = is_check;
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if (!is_check) {
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_last_frame_time.resetTime();
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}
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}
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void RtpProcess::setOnlyAudio(bool only_audio){
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_only_audio = only_audio;
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}
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void RtpProcess::onDetach() {
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if (_on_detach) {
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_on_detach();
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}
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}
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void RtpProcess::setOnDetach(function<void()> cb) {
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_on_detach = std::move(cb);
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}
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string RtpProcess::get_peer_ip() {
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if (!_addr) {
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return "::";
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}
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return SockUtil::inet_ntoa((sockaddr *)_addr.get());
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}
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uint16_t RtpProcess::get_peer_port() {
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if (!_addr) {
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return 0;
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}
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return SockUtil::inet_port((sockaddr *)_addr.get());
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}
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string RtpProcess::get_local_ip() {
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if (_sock) {
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return _sock->get_local_ip();
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}
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return "::";
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}
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uint16_t RtpProcess::get_local_port() {
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if (_sock) {
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return _sock->get_local_port();
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}
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return 0;
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}
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string RtpProcess::getIdentifier() const {
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return _media_info.stream;
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}
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void RtpProcess::emitOnPublish() {
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weak_ptr<RtpProcess> weak_self = shared_from_this();
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Broadcast::PublishAuthInvoker invoker = [weak_self](const string &err, const ProtocolOption &option) {
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auto strong_self = weak_self.lock();
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if (!strong_self) {
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return;
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}
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auto poller = strong_self->getOwnerPoller(MediaSource::NullMediaSource());
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poller->async([weak_self, err, option]() {
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auto strong_self = weak_self.lock();
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if (!strong_self) {
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return;
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}
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if (err.empty()) {
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strong_self->_muxer = std::make_shared<MultiMediaSourceMuxer>(strong_self->_media_info, 0.0f,
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option);
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if (strong_self->_only_audio) {
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strong_self->_muxer->setOnlyAudio();
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}
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strong_self->_muxer->setMediaListener(strong_self);
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strong_self->doCachedFunc();
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InfoP(strong_self) << "允许RTP推流";
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} else {
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WarnP(strong_self) << "禁止RTP推流:" << err;
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}
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});
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};
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//触发推流鉴权事件
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auto flag = NoticeCenter::Instance().emitEvent(Broadcast::kBroadcastMediaPublish, MediaOriginType::rtp_push, _media_info, invoker, static_cast<SockInfo &>(*this));
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if (!flag) {
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//该事件无人监听,默认不鉴权
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invoker("", ProtocolOption());
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}
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}
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MediaOriginType RtpProcess::getOriginType(MediaSource &sender) const{
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return MediaOriginType::rtp_push;
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}
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string RtpProcess::getOriginUrl(MediaSource &sender) const {
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return _media_info.getUrl();
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}
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std::shared_ptr<SockInfo> RtpProcess::getOriginSock(MediaSource &sender) const {
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return const_cast<RtpProcess *>(this)->shared_from_this();
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}
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toolkit::EventPoller::Ptr RtpProcess::getOwnerPoller(MediaSource &sender) {
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if (_sock) {
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return _sock->getPoller();
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}
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throw std::runtime_error("RtpProcess::getOwnerPoller failed:" + _media_info.stream);
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}
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float RtpProcess::getLossRate(MediaSource &sender, TrackType type) {
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auto expected = getExpectedPacketsInterval();
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if (!expected) {
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return -1;
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}
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return getLostInterval() * 100 / expected;
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}
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}//namespace mediakit
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#endif//defined(ENABLE_RTPPROXY)
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