384 lines
14 KiB
C++
384 lines
14 KiB
C++
/*
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* Copyright (c) 2016-present The ZLMediaKit project authors. All Rights Reserved.
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*
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* This file is part of ZLMediaKit(https://github.com/ZLMediaKit/ZLMediaKit).
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*
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* Use of this source code is governed by MIT-like 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 "MediaSink.h"
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#include "Common/config.h"
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#include "Extension/Factory.h"
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#define MUTE_AUDIO_INDEX 0xFFFF
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using namespace std;
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namespace mediakit{
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bool MediaSink::addTrack(const Track::Ptr &track_in) {
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if (_only_audio && track_in->getTrackType() != TrackAudio) {
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InfoL << "Only audio enabled, track ignored: " << track_in->getCodecName();
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return false;
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}
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if (!_enable_audio) {
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// 关闭音频时，加快单视频流注册速度
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if (track_in->getTrackType() == TrackAudio) {
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// 音频被全局忽略
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InfoL << "Audio disabled, audio track ignored";
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return false;
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}
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}
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if (_all_track_ready) {
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WarnL << "All track is ready, add track too late: " << track_in->getCodecName();
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return false;
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}
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// 克隆Track，只拷贝其数据，不拷贝其数据转发关系
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auto track = track_in->clone();
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auto index = track->getIndex();
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if (!_track_map.emplace(index, std::make_pair(track, false)).second) {
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WarnL << "Already add a same track: " << track->getIndex() << ", codec: " << track->getCodecName();
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return false;
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}
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_ticker.resetTime();
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_audio_add = track->getTrackType() == TrackAudio ? true : _audio_add;
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_track_ready_callback[index] = [this, track]() { onTrackReady(track); };
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track->addDelegate([this](const Frame::Ptr &frame) {
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if (_all_track_ready) {
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return onTrackFrame(frame);
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}
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auto &frame_unread = _frame_unread[frame->getIndex()];
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GET_CONFIG(uint32_t, kMaxUnreadyFrame, General::kUnreadyFrameCache);
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if (frame_unread.size() > kMaxUnreadyFrame) {
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// 未就绪的的track，不能缓存太多的帧，否则可能内存溢出
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frame_unread.clear();
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WarnL << "Cached frame of unready track(" << frame->getCodecName() << ") is too much, now cleared";
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}
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// 还有Track未就绪，先缓存之
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frame_unread.emplace_back(Frame::getCacheAbleFrame(frame));
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return true;
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});
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return true;
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}
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void MediaSink::resetTracks() {
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_audio_add = false;
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_have_video = false;
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_all_track_ready = false;
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_mute_audio_maker = nullptr;
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_ticker.resetTime();
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_track_map.clear();
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_frame_unread.clear();
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_track_ready_callback.clear();
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}
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bool MediaSink::inputFrame(const Frame::Ptr &frame) {
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auto it = _track_map.find(frame->getIndex());
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if (it == _track_map.end()) {
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return false;
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}
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// got frame
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it->second.second = true;
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auto ret = it->second.first->inputFrame(frame);
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if (_mute_audio_maker && frame->getTrackType() == TrackVideo) {
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// 视频驱动产生静音音频
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_mute_audio_maker->inputFrame(frame);
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}
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checkTrackIfReady();
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return ret;
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}
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void MediaSink::checkTrackIfReady() {
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if (!_all_track_ready && !_track_ready_callback.empty()) {
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for (auto &pr : _track_map) {
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if (pr.second.second && pr.second.first->ready()) {
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// Track由未就绪状态转换成就绪状态，我们就触发onTrackReady回调
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auto it = _track_ready_callback.find(pr.first);
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if (it != _track_ready_callback.end()) {
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it->second();
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_track_ready_callback.erase(it);
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}
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}
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}
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}
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if (!_all_track_ready) {
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GET_CONFIG(uint32_t, kMaxWaitReadyMS, General::kWaitTrackReadyMS);
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if (_ticker.elapsedTime() > kMaxWaitReadyMS) {
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// 如果超过规定时间，那么不再等待并忽略未准备好的Track
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emitAllTrackReady();
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return;
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}
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if (!_track_ready_callback.empty()) {
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// 在超时时间内，如果存在未准备好的Track，那么继续等待
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return;
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}
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if (_only_audio && _audio_add) {
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// 只开启音频
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emitAllTrackReady();
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return;
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}
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if (_track_map.size() == _max_track_size) {
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// 如果已经添加了音视频Track，并且不存在未准备好的Track，那么说明所有Track都准备好了
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emitAllTrackReady();
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return;
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}
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GET_CONFIG(uint32_t, kMaxAddTrackMS, General::kWaitAddTrackMS);
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if (_track_map.size() == 1 && _ticker.elapsedTime() > kMaxAddTrackMS) {
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// 如果只有一个Track，那么在该Track添加后，我们最多还等待若干时间(可能后面还会添加Track)
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emitAllTrackReady();
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return;
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}
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}
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}
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void MediaSink::addTrackCompleted() {
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setMaxTrackCount(_track_map.size());
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}
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void MediaSink::setMaxTrackCount(size_t i) {
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if (_all_track_ready) {
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WarnL << "All track is ready, set max track count ignored";
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return;
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}
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_max_track_size = MAX(i, 1);
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checkTrackIfReady();
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}
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void MediaSink::emitAllTrackReady() {
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if (_all_track_ready) {
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return;
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}
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DebugL << "All track ready use " << _ticker.elapsedTime() << "ms";
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if (!_track_ready_callback.empty()) {
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// 这是超时强制忽略未准备好的Track
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_track_ready_callback.clear();
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// 移除未准备好的Track
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for (auto it = _track_map.begin(); it != _track_map.end();) {
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if (!it->second.second || !it->second.first->ready()) {
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WarnL << "Track not ready for a long time, ignored: " << it->second.first->getCodecName();
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it = _track_map.erase(it);
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continue;
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}
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++it;
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}
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}
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if (!_track_map.empty()) {
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// 最少有一个有效的Track
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onAllTrackReady_l();
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// 全部Track就绪，我们一次性把之前的帧输出
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for (auto &pr : _frame_unread) {
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if (_track_map.find(pr.first) == _track_map.end()) {
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// 该Track已经被移除
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continue;
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}
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pr.second.for_each([&](const Frame::Ptr &frame) { MediaSink::inputFrame(frame); });
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}
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_frame_unread.clear();
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}
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}
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void MediaSink::onAllTrackReady_l() {
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// 是否添加静音音频
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if (_add_mute_audio) {
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addMuteAudioTrack();
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}
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onAllTrackReady();
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_all_track_ready = true;
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_have_video = (bool)getTrack(TrackVideo);
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}
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vector<Track::Ptr> MediaSink::getTracks(bool ready) const {
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vector<Track::Ptr> ret;
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for (auto &pr : _track_map) {
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if (ready && !pr.second.first->ready()) {
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continue;
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}
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ret.emplace_back(pr.second.first);
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}
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return ret;
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}
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static uint8_t s_mute_adts[] = {0xff, 0xf1, 0x6c, 0x40, 0x2d, 0x3f, 0xfc, 0x00, 0xe0, 0x34, 0x20, 0xad, 0xf2, 0x3f, 0xb5, 0xdd,
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0x73, 0xac, 0xbd, 0xca, 0xd7, 0x7d, 0x4a, 0x13, 0x2d, 0x2e, 0xa2, 0x62, 0x02, 0x70, 0x3c, 0x1c,
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0xc5, 0x63, 0x55, 0x69, 0x94, 0xb5, 0x8d, 0x70, 0xd7, 0x24, 0x6a, 0x9e, 0x2e, 0x86, 0x24, 0xea,
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0x4f, 0xd4, 0xf8, 0x10, 0x53, 0xa5, 0x4a, 0xb2, 0x9a, 0xf0, 0xa1, 0x4f, 0x2f, 0x66, 0xf9, 0xd3,
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0x8c, 0xa6, 0x97, 0xd5, 0x84, 0xac, 0x09, 0x25, 0x98, 0x0b, 0x1d, 0x77, 0x04, 0xb8, 0x55, 0x49,
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0x85, 0x27, 0x06, 0x23, 0x58, 0xcb, 0x22, 0xc3, 0x20, 0x3a, 0x12, 0x09, 0x48, 0x24, 0x86, 0x76,
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0x95, 0xe3, 0x45, 0x61, 0x43, 0x06, 0x6b, 0x4a, 0x61, 0x14, 0x24, 0xa9, 0x16, 0xe0, 0x97, 0x34,
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0xb6, 0x58, 0xa4, 0x38, 0x34, 0x90, 0x19, 0x5d, 0x00, 0x19, 0x4a, 0xc2, 0x80, 0x4b, 0xdc, 0xb7,
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0x00, 0x18, 0x12, 0x3d, 0xd9, 0x93, 0xee, 0x74, 0x13, 0x95, 0xad, 0x0b, 0x59, 0x51, 0x0e, 0x99,
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0xdf, 0x49, 0x98, 0xde, 0xa9, 0x48, 0x4b, 0xa5, 0xfb, 0xe8, 0x79, 0xc9, 0xe2, 0xd9, 0x60, 0xa5,
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0xbe, 0x74, 0xa6, 0x6b, 0x72, 0x0e, 0xe3, 0x7b, 0x28, 0xb3, 0x0e, 0x52, 0xcc, 0xf6, 0x3d, 0x39,
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0xb7, 0x7e, 0xbb, 0xf0, 0xc8, 0xce, 0x5c, 0x72, 0xb2, 0x89, 0x60, 0x33, 0x7b, 0xc5, 0xda, 0x49,
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0x1a, 0xda, 0x33, 0xba, 0x97, 0x9e, 0xa8, 0x1b, 0x6d, 0x5a, 0x77, 0xb6, 0xf1, 0x69, 0x5a, 0xd1,
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0xbd, 0x84, 0xd5, 0x4e, 0x58, 0xa8, 0x5e, 0x8a, 0xa0, 0xc2, 0xc9, 0x22, 0xd9, 0xa5, 0x53, 0x11,
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0x18, 0xc8, 0x3a, 0x39, 0xcf, 0x3f, 0x57, 0xb6, 0x45, 0x19, 0x1e, 0x8a, 0x71, 0xa4, 0x46, 0x27,
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0x9e, 0xe9, 0xa4, 0x86, 0xdd, 0x14, 0xd9, 0x4d, 0xe3, 0x71, 0xe3, 0x26, 0xda, 0xaa, 0x17, 0xb4,
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0xac, 0xe1, 0x09, 0xc1, 0x0d, 0x75, 0xba, 0x53, 0x0a, 0x37, 0x8b, 0xac, 0x37, 0x39, 0x41, 0x27,
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0x6a, 0xf0, 0xe9, 0xb4, 0xc2, 0xac, 0xb0, 0x39, 0x73, 0x17, 0x64, 0x95, 0xf4, 0xdc, 0x33, 0xbb,
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0x84, 0x94, 0x3e, 0xf8, 0x65, 0x71, 0x60, 0x7b, 0xd4, 0x5f, 0x27, 0x79, 0x95, 0x6a, 0xba, 0x76,
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0xa6, 0xa5, 0x9a, 0xec, 0xae, 0x55, 0x3a, 0x27, 0x48, 0x23, 0xcf, 0x5c, 0x4d, 0xbc, 0x0b, 0x35,
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0x5c, 0xa7, 0x17, 0xcf, 0x34, 0x57, 0xc9, 0x58, 0xc5, 0x20, 0x09, 0xee, 0xa5, 0xf2, 0x9c, 0x6c,
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0x39, 0x1a, 0x77, 0x92, 0x9b, 0xff, 0xc6, 0xae, 0xf8, 0x36, 0xba, 0xa8, 0xaa, 0x6b, 0x1e, 0x8c,
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0xc5, 0x97, 0x39, 0x6a, 0xb8, 0xa2, 0x55, 0xa8, 0xf8};
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#define MUTE_ADTS_DATA s_mute_adts
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#define MUTE_ADTS_DATA_MS 128
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static uint8_t ADTS_CONFIG[2] = { 0x15, 0x88 };
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bool MuteAudioMaker::inputFrame(const Frame::Ptr &frame) {
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if (_track_index == -1) {
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// 锁定track
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_track_index = frame->getIndex();
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}
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if (frame->getIndex() != _track_index) {
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// 不是锁定的track
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return false;
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}
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auto audio_idx = frame->dts() / MUTE_ADTS_DATA_MS;
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if (_audio_idx != audio_idx) {
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_audio_idx = audio_idx;
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auto aacFrame = std::make_shared<FrameToCache<FrameFromPtr>>(CodecAAC, (char *)MUTE_ADTS_DATA, sizeof(s_mute_adts), _audio_idx * MUTE_ADTS_DATA_MS, 0, 7);
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aacFrame->setIndex(MUTE_AUDIO_INDEX);
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return FrameDispatcher::inputFrame(aacFrame);
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}
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return false;
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}
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bool MediaSink::addMuteAudioTrack() {
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if (!_enable_audio) {
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return false;
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}
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for (auto &pr : _track_map) {
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if (pr.second.first->getTrackType() == TrackAudio) {
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return false;
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}
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}
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auto audio = Factory::getTrackByCodecId(CodecAAC);
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audio->setIndex(MUTE_AUDIO_INDEX);
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audio->setExtraData(ADTS_CONFIG, 2);
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_track_map[MUTE_AUDIO_INDEX] = std::make_pair(audio, true);
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audio->addDelegate([this](const Frame::Ptr &frame) { return onTrackFrame(frame); });
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_mute_audio_maker = std::make_shared<MuteAudioMaker>();
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_mute_audio_maker->addDelegate([audio](const Frame::Ptr &frame) { return audio->inputFrame(frame); });
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onTrackReady(audio);
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TraceL << "Mute aac track added";
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return true;
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}
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bool MediaSink::isAllTrackReady() const {
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return _all_track_ready;
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}
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void MediaSink::enableAudio(bool flag) {
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_enable_audio = flag;
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}
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void MediaSink::setOnlyAudio() {
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_only_audio = true;
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_enable_audio = true;
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_add_mute_audio = false;
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}
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void MediaSink::enableMuteAudio(bool flag) {
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_add_mute_audio = flag;
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}
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bool MediaSink::haveVideo() const {
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return _have_video;
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}
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///////////////////////////DemuxerSink//////////////////////////////
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void MediaSinkDelegate::setTrackListener(TrackListener *listener) {
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_listener = listener;
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}
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bool MediaSinkDelegate::onTrackReady(const Track::Ptr &track) {
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if (_listener) {
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_listener->addTrack(track);
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}
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return true;
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}
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void MediaSinkDelegate::onAllTrackReady() {
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if (_listener) {
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_listener->addTrackCompleted();
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}
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}
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void MediaSinkDelegate::resetTracks() {
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MediaSink::resetTracks();
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if (_listener) {
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_listener->resetTracks();
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}
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}
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///////////////////////////Demuxer//////////////////////////////
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void Demuxer::setTrackListener(TrackListener *listener, bool wait_track_ready) {
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if (wait_track_ready) {
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auto sink = std::make_shared<MediaSinkDelegate>();
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sink->setTrackListener(listener);
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_sink = std::move(sink);
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}
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_listener = listener;
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}
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bool Demuxer::addTrack(const Track::Ptr &track) {
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if (!_sink) {
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_origin_track.emplace_back(track);
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return _listener ? _listener->addTrack(track) : false;
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}
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if (_sink->addTrack(track)) {
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track->addDelegate([this](const Frame::Ptr &frame) { return _sink->inputFrame(frame); });
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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 Demuxer::addTrackCompleted() {
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if (_sink) {
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_sink->addTrackCompleted();
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} else if (_listener) {
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_listener->addTrackCompleted();
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}
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}
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void Demuxer::resetTracks() {
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if (_sink) {
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_sink->resetTracks();
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} else if (_listener) {
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_listener->resetTracks();
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}
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}
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vector<Track::Ptr> Demuxer::getTracks(bool ready) const {
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if (_sink) {
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return _sink->getTracks(ready);
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}
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vector<Track::Ptr> ret;
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for (auto &track : _origin_track) {
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if (ready && !track->ready()) {
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continue;
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}
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ret.emplace_back(track);
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}
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return ret;
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}
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} // namespace mediakit
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