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修复aac rtp解码兼容性相关bug

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This commit is contained in:
xiongziliang 2024-06-15 15:11:36 +08:00
parent 170ec3c830
commit 720d6304d2
1 changed files with 22 additions and 23 deletions
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19
ext-codec/AACRtp.cpp
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@ -87,26 +87,25 @@ bool AACRtpDecoder::inputRtp(const RtpPacket::Ptr &rtp, bool key_pos) {
// 每个audio unit时间戳增量
auto dts_inc = (stamp - _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，忽略
dts_inc = 0;
}
for (int i = 0; i < au_header_count; ++i) {
for (auto i = 0u; i < (size_t)au_header_count; ++i) {
// 之后的2字节是AU_HEADER,其中高13位表示一帧AAC负载的字节长度，低3位无用
uint16_t size = ((au_header_ptr[0] << 8) | au_header_ptr[1]) >> 3;
if (ptr + size > end) {
//数据不够
auto size = ((au_header_ptr[0] << 8) | au_header_ptr[1]) >> 3;
auto len = std::min<int>(size, end - ptr);
if (len <= 0) {
break;
}
_frame->_buffer.append((char *)ptr, len);
ptr += len;
au_header_ptr += 2;
if (size) {
//设置aac数据
_frame->_buffer.assign((char *) ptr, size);
if (_frame->size() == (size_t)size) {
// 设置当前audio unit时间戳
_frame->_dts = _last_dts + i * dts_inc;
ptr += size;
au_header_ptr += 2;
flushData();
}
}