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https://github.com/ZLMediaKit/ZLMediaKit.git
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rtp ntp时间戳采用透传方式 (#2719)
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@ -39,7 +39,7 @@ RtpPacket::Ptr RtpInfo::makeRtp(TrackType type, const void* data, size_t len, bo
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++_seq;
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header->stamp = htonl(uint64_t(stamp) * _sample_rate / 1000);
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header->ssrc = htonl(_ssrc);
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rtp->ntp_stamp = stamp;
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//有效负载
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if (data) {
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memcpy(&ptr[RtpPacket::kRtpHeaderSize + RtpPacket::kRtpTcpHeaderSize], data, len);
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@ -14,9 +14,12 @@
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using namespace std;
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using namespace toolkit;
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#define ENABLE_NTP_STAMP 0
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namespace mediakit {
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void RtspMuxer::onRtp(RtpPacket::Ptr in, bool is_key) {
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#if ENABLE_NTP_STAMP
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if (_live) {
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if (_rtp_stamp[in->type] != in->getHeader()->stamp) {
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//rtp时间戳变化才计算ntp,节省cpu资源
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@ -34,6 +37,7 @@ void RtspMuxer::onRtp(RtpPacket::Ptr in, bool is_key) {
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//点播情况下设置ntp时间戳为rtp时间戳加基准ntp时间戳
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in->ntp_stamp = _ntp_stamp_start + (in->getStamp() * uint64_t(1000) / in->sample_rate);
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}
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#endif
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_rtpRing->write(std::move(in), is_key);
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}
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@ -49,7 +53,10 @@ RtspMuxer::RtspMuxer(const TitleSdp::Ptr &title) {
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_rtpInterceptor->setDelegate(std::make_shared<RingDelegateHelper>([this](RtpPacket::Ptr in, bool is_key) {
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onRtp(std::move(in), is_key);
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}));
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#if ENABLE_NTP_STAMP
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_ntp_stamp_start = getCurrentMillisecond(true);
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#endif
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}
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bool RtspMuxer::addTrack(const Track::Ptr &track) {
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@ -75,10 +82,12 @@ bool RtspMuxer::addTrack(const Track::Ptr &track) {
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}
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void RtspMuxer::trySyncTrack() {
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#if ENABLE_NTP_STAMP
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if (_encoder[TrackAudio] && _encoder[TrackVideo]) {
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//音频时间戳同步于视频,因为音频时间戳被修改后不影响播放
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_stamp[TrackAudio].syncTo(_stamp[TrackVideo]);
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}
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#endif
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}
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bool RtspMuxer::inputFrame(const Frame::Ptr &frame) {
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