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RTC: 修复gop没有sps/pps导致的秒开失败问题 (#2959)

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rtc场景下，如果directProxy设置为1，sdp没有传递sps/pps，因此gop的开始需要是rtp sps/pps配置帧而不是idr关键帧，这样才能保证秒开。
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yujitai 2023-11-07 19:34:40 +08:00 committed by GitHub
parent c95ccbd544
commit 433ecb1c5c
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GPG Key ID: 4AEE18F83AFDEB23
4 changed files with 15 additions and 9 deletions
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12
src/Extension/H264Rtp.cpp
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@ -44,13 +44,15 @@ H264Frame::Ptr H264RtpDecoder::obtainFrame() {
bool H264RtpDecoder::inputRtp(const RtpPacket::Ptr &rtp, bool key_pos) {
auto seq = rtp->getSeq();
auto ret = decodeRtp(rtp);
if (!_gop_dropped && seq != (uint16_t) (_last_seq + 1) && _last_seq) {
auto last_is_gop = _is_gop;
_is_gop = decodeRtp(rtp);
if (!_gop_dropped && seq != (uint16_t)(_last_seq + 1) && _last_seq) {
_gop_dropped = true;
WarnL << "start drop h264 gop, last seq:" << _last_seq << ", rtp:\r\n" << rtp->dumpString();
}
_last_seq = seq;
return ret;
// 确保有sps rtp的时候，gop从sps开始；否则从关键帧开始
return _is_gop && !last_is_gop;
}
/*
@ -74,7 +76,7 @@ bool H264RtpDecoder::singleFrame(const RtpPacket::Ptr &rtp, const uint8_t *ptr,
_frame->_buffer.assign("\x00\x00\x00\x01", 4);
_frame->_buffer.append((char *) ptr, size);
_frame->_pts = stamp;
auto key = _frame->keyFrame();
auto key = _frame->keyFrame() || _frame->configFrame();
outputFrame(rtp, _frame);
return key;
}
@ -127,7 +129,7 @@ bool H264RtpDecoder::mergeFu(const RtpPacket::Ptr &rtp, const uint8_t *ptr, ssiz
if (!fu->end_bit) {
//非末尾包
return fu->start_bit ? _frame->keyFrame() : false;
return fu->start_bit ? (_frame->keyFrame() || _frame->configFrame()) : false;
}
//确保下一次fu必须收到第一个包

1
src/Extension/H264Rtp.h
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@ -51,6 +51,7 @@ private:
void outputFrame(const RtpPacket::Ptr &rtp, const H264Frame::Ptr &frame);
private:
bool _is_gop = false;
bool _gop_dropped = false;
bool _fu_dropped = true;
uint16_t _last_seq = 0;

10
src/Extension/H265Rtp.cpp
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@ -163,7 +163,7 @@ bool H265RtpDecoder::mergeFu(const RtpPacket::Ptr &rtp, const uint8_t *ptr, ssiz
if (!e_bit) {
//非末尾包
return s_bit ? _frame->keyFrame() : false;
return s_bit ? (_frame->keyFrame() || _frame->configFrame()) : false;
}
//确保下一次fu必须收到第一个包
@ -175,13 +175,15 @@ bool H265RtpDecoder::mergeFu(const RtpPacket::Ptr &rtp, const uint8_t *ptr, ssiz
bool H265RtpDecoder::inputRtp(const RtpPacket::Ptr &rtp, bool) {
auto seq = rtp->getSeq();
auto ret = decodeRtp(rtp);
auto last_is_gop = _is_gop;
_is_gop = decodeRtp(rtp);
if (!_gop_dropped && seq != (uint16_t) (_last_seq + 1) && _last_seq) {
_gop_dropped = true;
WarnL << "start drop h265 gop, last seq:" << _last_seq << ", rtp:\r\n" << rtp->dumpString();
}
_last_seq = seq;
return ret;
// 确保有sps rtp的时候，gop从sps开始；否则从关键帧开始
return _is_gop && !last_is_gop;
}
bool H265RtpDecoder::decodeRtp(const RtpPacket::Ptr &rtp) {
@ -220,7 +222,7 @@ bool H265RtpDecoder::singleFrame(const RtpPacket::Ptr &rtp, const uint8_t *ptr,
_frame->_buffer.assign("\x00\x00\x00\x01", 4);
_frame->_buffer.append((char *) ptr, size);
_frame->_pts = stamp;
auto key = _frame->keyFrame();
auto key = _frame->keyFrame() || _frame->configFrame();
outputFrame(rtp, _frame);
return key;
}

1
src/Extension/H265Rtp.h
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@ -51,6 +51,7 @@ private:
void outputFrame(const RtpPacket::Ptr &rtp, const H265Frame::Ptr &frame);
private:
bool _is_gop = false;
bool _using_donl_field = false;
bool _gop_dropped = false;
bool _fu_dropped = true;