mirror of
https://github.com/ZLMediaKit/ZLMediaKit.git
synced 2024-11-27 13:49:01 +08:00
419 lines
13 KiB
C++
419 lines
13 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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#include "RtmpPlayer.h"
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#include "Rtmp/utils.h"
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#include "Util/util.h"
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#include "Util/onceToken.h"
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#include "Thread/ThreadPool.h"
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using namespace toolkit;
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using namespace mediakit::Client;
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namespace mediakit {
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RtmpPlayer::RtmpPlayer(const EventPoller::Ptr &poller) : TcpClient(poller) {}
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RtmpPlayer::~RtmpPlayer() {
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DebugL << endl;
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}
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void RtmpPlayer::teardown() {
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if (alive()) {
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shutdown(SockException(Err_shutdown,"teardown"));
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}
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_app.clear();
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_stream_id.clear();
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_tc_url.clear();
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_beat_timer.reset();
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_play_timer.reset();
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_rtmp_recv_timer.reset();
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_seek_ms = 0;
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RtmpProtocol::reset();
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CLEAR_ARR(_fist_stamp);
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CLEAR_ARR(_now_stamp);
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lock_guard<recursive_mutex> lck(_mtx_on_result);
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_map_on_result.clear();
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lock_guard<recursive_mutex> lck2(_mtx_on_status);
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_deque_on_status.clear();
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}
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void RtmpPlayer::play(const string &strUrl) {
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teardown();
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string host_url = FindField(strUrl.data(), "://", "/");
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_app = FindField(strUrl.data(), (host_url + "/").data(), "/");
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_stream_id = FindField(strUrl.data(), (host_url + "/" + _app + "/").data(), NULL);
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_tc_url = string("rtmp://") + host_url + "/" + _app;
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if (!_app.size() || !_stream_id.size()) {
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onPlayResult_l(SockException(Err_other, "rtmp url非法"), false);
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return;
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}
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DebugL << host_url << " " << _app << " " << _stream_id;
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auto iPort = atoi(FindField(host_url.data(), ":", NULL).data());
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if (iPort <= 0) {
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//rtmp 默认端口1935
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iPort = 1935;
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} else {
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//服务器域名
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host_url = FindField(host_url.data(), NULL, ":");
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}
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if (!(*this)[kNetAdapter].empty()) {
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setNetAdapter((*this)[kNetAdapter]);
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}
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weak_ptr<RtmpPlayer> weak_self = dynamic_pointer_cast<RtmpPlayer>(shared_from_this());
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float play_timeout_sec = (*this)[kTimeoutMS].as<int>() / 1000.0f;
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_play_timer.reset(new Timer(play_timeout_sec, [weak_self]() {
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auto strong_self = weak_self.lock();
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if (!strong_self) {
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return false;
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}
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strong_self->onPlayResult_l(SockException(Err_timeout, "play rtmp timeout"), false);
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return false;
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}, getPoller()));
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_metadata_got = false;
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startConnect(host_url, iPort, play_timeout_sec);
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}
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void RtmpPlayer::onErr(const SockException &ex){
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//定时器_pPlayTimer为空后表明握手结束了
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onPlayResult_l(ex, !_play_timer);
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}
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void RtmpPlayer::onPlayResult_l(const SockException &ex, bool handshake_done) {
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if (ex.getErrCode() == Err_shutdown) {
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//主动shutdown的，不触发回调
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return;
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}
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WarnL << ex.getErrCode() << " " << ex.what();
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if (!handshake_done) {
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//开始播放阶段
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_play_timer.reset();
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//是否为性能测试模式
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_benchmark_mode = (*this)[Client::kBenchmarkMode].as<int>();
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onPlayResult(ex);
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} else if (ex) {
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//播放成功后异常断开回调
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onShutdown(ex);
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} else {
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//恢复播放
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onResume();
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}
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if (!ex) {
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//播放成功，恢复rtmp接收超时定时器
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_rtmp_recv_ticker.resetTime();
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auto timeout_ms = (*this)[kMediaTimeoutMS].as<uint64_t>();
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weak_ptr<RtmpPlayer> weakSelf = dynamic_pointer_cast<RtmpPlayer>(shared_from_this());
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auto lam = [weakSelf, timeout_ms]() {
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auto strongSelf = weakSelf.lock();
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if (!strongSelf) {
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return false;
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}
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if (strongSelf->_rtmp_recv_ticker.elapsedTime() > timeout_ms) {
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//接收rtmp媒体数据超时
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SockException ex(Err_timeout, "receive rtmp timeout");
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strongSelf->onPlayResult_l(ex, true);
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return false;
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}
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return true;
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};
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//创建rtmp数据接收超时检测定时器
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_rtmp_recv_timer = std::make_shared<Timer>(timeout_ms / 2000.0f, lam, getPoller());
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} else {
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shutdown(SockException(Err_shutdown,"teardown"));
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}
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}
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void RtmpPlayer::onConnect(const SockException &err){
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if (err.getErrCode() != Err_success) {
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onPlayResult_l(err, false);
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return;
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}
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weak_ptr<RtmpPlayer> weakSelf = dynamic_pointer_cast<RtmpPlayer>(shared_from_this());
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startClientSession([weakSelf]() {
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auto strongSelf = weakSelf.lock();
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if (!strongSelf) {
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return;
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}
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strongSelf->send_connect();
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});
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}
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void RtmpPlayer::onRecv(const Buffer::Ptr &buf){
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try {
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if (_benchmark_mode && !_play_timer) {
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//在性能测试模式下，如果rtmp握手完毕后，不再解析rtmp包
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_rtmp_recv_ticker.resetTime();
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return;
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}
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onParseRtmp(buf->data(), buf->size());
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} catch (exception &e) {
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SockException ex(Err_other, e.what());
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//定时器_pPlayTimer为空后表明握手结束了
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onPlayResult_l(ex, !_play_timer);
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}
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}
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void RtmpPlayer::pause(bool bPause) {
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send_pause(bPause);
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}
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inline void RtmpPlayer::send_connect() {
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AMFValue obj(AMF_OBJECT);
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obj.set("app", _app);
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obj.set("tcUrl", _tc_url);
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//未使用代理
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obj.set("fpad", false);
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//参考librtmp,什么作用?
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obj.set("capabilities", 15);
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//SUPPORT_VID_CLIENT_SEEK 支持seek
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obj.set("videoFunction", 1);
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//只支持aac
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obj.set("audioCodecs", (double) (0x0400));
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//只支持H264
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obj.set("videoCodecs", (double) (0x0080));
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sendInvoke("connect", obj);
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addOnResultCB([this](AMFDecoder &dec) {
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//TraceL << "connect result";
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dec.load<AMFValue>();
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auto val = dec.load<AMFValue>();
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auto level = val["level"].as_string();
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auto code = val["code"].as_string();
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if (level != "status") {
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throw std::runtime_error(StrPrinter << "connect 失败:" << level << " " << code << endl);
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}
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send_createStream();
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});
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}
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inline void RtmpPlayer::send_createStream() {
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AMFValue obj(AMF_NULL);
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sendInvoke("createStream", obj);
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addOnResultCB([this](AMFDecoder &dec) {
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//TraceL << "createStream result";
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dec.load<AMFValue>();
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_stream_index = dec.load<int>();
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send_play();
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});
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}
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inline void RtmpPlayer::send_play() {
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AMFEncoder enc;
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enc << "play" << ++_send_req_id << nullptr << _stream_id << (double) _stream_index;
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sendRequest(MSG_CMD, enc.data());
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auto fun = [](AMFValue &val) {
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//TraceL << "play onStatus";
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auto level = val["level"].as_string();
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auto code = val["code"].as_string();
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if (level != "status") {
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throw std::runtime_error(StrPrinter << "play 失败:" << level << " " << code << endl);
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}
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};
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addOnStatusCB(fun);
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addOnStatusCB(fun);
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}
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inline void RtmpPlayer::send_pause(bool pause) {
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AMFEncoder enc;
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enc << "pause" << ++_send_req_id << nullptr << pause;
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sendRequest(MSG_CMD, enc.data());
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auto fun = [this, pause](AMFValue &val) {
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//TraceL << "pause onStatus";
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auto level = val["level"].as_string();
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auto code = val["code"].as_string();
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if (level != "status") {
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if (!pause) {
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throw std::runtime_error(StrPrinter << "pause 恢复播放失败:" << level << " " << code << endl);
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}
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} else {
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_paused = pause;
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if (!pause) {
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onPlayResult_l(SockException(Err_success, "resum rtmp success"), true);
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} else {
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//暂停播放
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_rtmp_recv_timer.reset();
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}
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}
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};
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addOnStatusCB(fun);
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_beat_timer.reset();
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if (pause) {
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weak_ptr<RtmpPlayer> weakSelf = dynamic_pointer_cast<RtmpPlayer>(shared_from_this());
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_beat_timer.reset(new Timer((*this)[kBeatIntervalMS].as<int>() / 1000.0f, [weakSelf]() {
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auto strongSelf = weakSelf.lock();
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if (!strongSelf) {
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return false;
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}
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uint32_t timeStamp = (uint32_t)::time(NULL);
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strongSelf->sendUserControl(CONTROL_PING_REQUEST, timeStamp);
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return true;
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}, getPoller()));
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}
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}
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void RtmpPlayer::onCmd_result(AMFDecoder &dec){
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auto req_id = dec.load<int>();
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lock_guard<recursive_mutex> lck(_mtx_on_result);
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auto it = _map_on_result.find(req_id);
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if (it != _map_on_result.end()) {
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it->second(dec);
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_map_on_result.erase(it);
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} else {
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WarnL << "unhandled _result";
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}
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}
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void RtmpPlayer::onCmd_onStatus(AMFDecoder &dec) {
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AMFValue val;
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while (true) {
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val = dec.load<AMFValue>();
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if (val.type() == AMF_OBJECT) {
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break;
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}
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}
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if (val.type() != AMF_OBJECT) {
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throw std::runtime_error("onStatus:the result object was not found");
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}
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lock_guard<recursive_mutex> lck(_mtx_on_status);
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if (_deque_on_status.size()) {
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_deque_on_status.front()(val);
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_deque_on_status.pop_front();
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} else {
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auto level = val["level"];
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auto code = val["code"].as_string();
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if (level.type() == AMF_STRING) {
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if (level.as_string() != "status") {
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throw std::runtime_error(StrPrinter << "onStatus 失败:" << level.as_string() << " " << code << endl);
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}
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}
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//WarnL << "unhandled onStatus:" << code;
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}
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}
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void RtmpPlayer::onCmd_onMetaData(AMFDecoder &dec) {
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//TraceL;
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auto val = dec.load<AMFValue>();
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if (!onCheckMeta(val)) {
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throw std::runtime_error("onCheckMeta failed");
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}
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_metadata_got = true;
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}
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void RtmpPlayer::onStreamDry(uint32_t stream_index) {
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//TraceL << stream_index;
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onPlayResult_l(SockException(Err_other, "rtmp stream dry"), true);
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}
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void RtmpPlayer::onMediaData_l(const RtmpPacket::Ptr &chunk_data) {
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_rtmp_recv_ticker.resetTime();
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if (!_play_timer) {
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//已经触发了onPlayResult事件，直接触发onMediaData事件
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onMediaData(chunk_data);
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return;
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}
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if (chunk_data->isCfgFrame()) {
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//输入配置帧以便初始化完成各个track
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onMediaData(chunk_data);
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} else {
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//先触发onPlayResult事件，这个时候解码器才能初始化完毕
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onPlayResult_l(SockException(Err_success, "play rtmp success"), false);
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//触发onPlayResult事件后，再把帧数据输入到解码器
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onMediaData(chunk_data);
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}
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}
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void RtmpPlayer::onRtmpChunk(RtmpPacket &chunk_data) {
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typedef void (RtmpPlayer::*rtmp_func_ptr)(AMFDecoder &dec);
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static unordered_map<string, rtmp_func_ptr> s_func_map;
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static onceToken token([]() {
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s_func_map.emplace("_error", &RtmpPlayer::onCmd_result);
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s_func_map.emplace("_result", &RtmpPlayer::onCmd_result);
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s_func_map.emplace("onStatus", &RtmpPlayer::onCmd_onStatus);
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s_func_map.emplace("onMetaData", &RtmpPlayer::onCmd_onMetaData);
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});
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switch (chunk_data.type_id) {
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case MSG_CMD:
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case MSG_CMD3:
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case MSG_DATA:
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case MSG_DATA3: {
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AMFDecoder dec(chunk_data.buffer, 0);
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std::string type = dec.load<std::string>();
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auto it = s_func_map.find(type);
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if (it != s_func_map.end()) {
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auto fun = it->second;
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(this->*fun)(dec);
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} else {
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WarnL << "can not support cmd:" << type;
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}
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break;
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}
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case MSG_AUDIO:
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case MSG_VIDEO: {
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auto idx = chunk_data.type_id % 2;
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if (_now_stamp_ticker[idx].elapsedTime() > 500) {
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//计算播放进度时间轴用
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_now_stamp[idx] = chunk_data.time_stamp;
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}
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if (!_metadata_got) {
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if (!onCheckMeta(TitleMeta().getMetadata())) {
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throw std::runtime_error("onCheckMeta failed");
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}
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_metadata_got = true;
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}
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onMediaData_l(std::make_shared<RtmpPacket>(std::move(chunk_data)));
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break;
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}
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default: break;
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}
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}
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uint32_t RtmpPlayer::getProgressMilliSecond() const{
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uint32_t stamp[2] = {0, 0};
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for (auto i = 0; i < 2; i++) {
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stamp[i] = _now_stamp[i] - _fist_stamp[i];
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}
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return _seek_ms + MAX(stamp[0], stamp[1]);
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}
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void RtmpPlayer::seekToMilliSecond(uint32_t seekMS){
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if (_paused) {
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pause(false);
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}
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AMFEncoder enc;
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enc << "seek" << ++_send_req_id << nullptr << seekMS * 1.0;
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sendRequest(MSG_CMD, enc.data());
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addOnStatusCB([this, seekMS](AMFValue &val) {
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//TraceL << "seek result";
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_now_stamp_ticker[0].resetTime();
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_now_stamp_ticker[1].resetTime();
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int iTimeInc = seekMS - getProgressMilliSecond();
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for (auto i = 0; i < 2; i++) {
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_fist_stamp[i] = _now_stamp[i] + iTimeInc;
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_now_stamp[i] = _fist_stamp[i];
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}
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_seek_ms = seekMS;
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});
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}
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} /* namespace mediakit */
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