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完善aac rtp解析

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This commit is contained in:
xiongziliang 2020-07-24 20:10:47 +08:00
parent 4281a1272e
commit c0fde62480
1 changed files with 17 additions and 14 deletions
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15
src/Extension/AACRtp.cpp
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@ -98,10 +98,15 @@ bool AACRtpDecoder::inputRtp(const RtpPacket::Ptr &rtppack, bool key_pos) {
return false; return false;
} }
if (!_last_dts) {
//记录第一个时间戳
_last_dts = rtppack->timeStamp;
}
//每个audio unit时间戳增量 //每个audio unit时间戳增量
auto dts_inc = (rtppack->timeStamp - _last_dts) / au_header_count; auto dts_inc = (rtppack->timeStamp - _last_dts) / au_header_count;
if (dts_inc < 0 && dts_inc > 100) { if (dts_inc < 0 && dts_inc > 100) {
//时间戳增量异常 //时间戳增量异常，忽略
dts_inc = 0; dts_inc = 0;
} }
@ -112,6 +117,8 @@ bool AACRtpDecoder::inputRtp(const RtpPacket::Ptr &rtppack, bool key_pos) {
//数据不够 //数据不够
break; break;
} }
if (size) {
//设置aac数据 //设置aac数据
_frame->_buffer.assign((char *) ptr, size); _frame->_buffer.assign((char *) ptr, size);
//设置当前audio unit时间戳 //设置当前audio unit时间戳
@ -120,17 +127,13 @@ bool AACRtpDecoder::inputRtp(const RtpPacket::Ptr &rtppack, bool key_pos) {
au_header_ptr += 2; au_header_ptr += 2;
flushData(); flushData();
} }
}
//记录上次时间戳 //记录上次时间戳
_last_dts = rtppack->timeStamp; _last_dts = rtppack->timeStamp;
return false; return false;
} }
void AACRtpDecoder::flushData() { void AACRtpDecoder::flushData() {
if (_frame->_buffer.empty()) {
//没有有效数据
return;
}
//插入adts头 //插入adts头
char adts_header[32] = {0}; char adts_header[32] = {0};
auto size = dumpAacConfig(_aac_cfg, _frame->_buffer.size(), (uint8_t *) adts_header, sizeof(adts_header)); auto size = dumpAacConfig(_aac_cfg, _frame->_buffer.size(), (uint8_t *) adts_header, sizeof(adts_header));