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Code Issues Releases Wiki Activity

for #299, refine docs.

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winlin 2017-01-26 17:28:49 +08:00
parent e8353cba3b
commit 136a7ef488
22 changed files with 73 additions and 70 deletions
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24
trunk/src/protocol/srs_raw_avc.cpp
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@ -50,7 +50,7 @@ int SrsRawH264Stream::annexb_demux(SrsBuffer* stream, char** pframe, int* pnb_fr
while (!stream->empty()) {
// each frame must prefixed by annexb format.
// about annexb, @see H.264-AVC-ISO_IEC_14496-10.pdf, page 211.
// about annexb, @see ISO_IEC_14496-10-AVC-2003.pdf, page 211.
int pnb_start_code = 0;
if (!srs_avc_startswith_annexb(stream, &pnb_start_code)) {
return ERROR_H264_API_NO_PREFIXED;
@ -80,7 +80,7 @@ bool SrsRawH264Stream::is_sps(char* frame, int nb_frame)
srs_assert(nb_frame > 0);
// 5bits, 7.3.1 NAL unit syntax,
// H.264-AVC-ISO_IEC_14496-10.pdf, page 44.
// ISO_IEC_14496-10-AVC-2003.pdf, page 44.
// 7: SPS, 8: PPS, 5: I Frame, 1: P Frame
u_int8_t nal_unit_type = (char)frame[0] & 0x1f;
@ -92,7 +92,7 @@ bool SrsRawH264Stream::is_pps(char* frame, int nb_frame)
srs_assert(nb_frame > 0);
// 5bits, 7.3.1 NAL unit syntax,
// H.264-AVC-ISO_IEC_14496-10.pdf, page 44.
// ISO_IEC_14496-10-AVC-2003.pdf, page 44.
// 7: SPS, 8: PPS, 5: I Frame, 1: P Frame
u_int8_t nal_unit_type = (char)frame[0] & 0x1f;
@ -166,12 +166,12 @@ int SrsRawH264Stream::mux_sequence_header(string sps, string pps, u_int32_t dts,
}
// decode the SPS:
// @see: 7.3.2.1.1, H.264-AVC-ISO_IEC_14496-10-2012.pdf, page 62
// @see: 7.3.2.1.1, ISO_IEC_14496-10-AVC-2012.pdf, page 62
if (true) {
srs_assert((int)sps.length() >= 4);
char* frame = (char*)sps.data();
// @see: Annex A Profiles and levels, H.264-AVC-ISO_IEC_14496-10.pdf, page 205
// @see: Annex A Profiles and levels, ISO_IEC_14496-10-AVC-2003.pdf, page 205
// Baseline profile profile_idc is 66(0x42).
// Main profile profile_idc is 77(0x4d).
// Extended profile profile_idc is 88(0x58).
@ -180,7 +180,7 @@ int SrsRawH264Stream::mux_sequence_header(string sps, string pps, u_int32_t dts,
u_int8_t level_idc = frame[3];
// generate the sps/pps header
// 5.3.4.2.1 Syntax, H.264-AVC-ISO_IEC_14496-15.pdf, page 16
// 5.3.4.2.1 Syntax, ISO_IEC_14496-15-AVC-format-2012.pdf, page 16
// configurationVersion
stream.write_1bytes(0x01);
// AVCProfileIndication
@ -196,7 +196,7 @@ int SrsRawH264Stream::mux_sequence_header(string sps, string pps, u_int32_t dts,
// sps
if (true) {
// 5.3.4.2.1 Syntax, H.264-AVC-ISO_IEC_14496-15.pdf, page 16
// 5.3.4.2.1 Syntax, ISO_IEC_14496-15-AVC-format-2012.pdf, page 16
// numOfSequenceParameterSets, always 1
stream.write_1bytes(0x01);
// sequenceParameterSetLength
@ -207,7 +207,7 @@ int SrsRawH264Stream::mux_sequence_header(string sps, string pps, u_int32_t dts,
// pps
if (true) {
// 5.3.4.2.1 Syntax, H.264-AVC-ISO_IEC_14496-15.pdf, page 16
// 5.3.4.2.1 Syntax, ISO_IEC_14496-15-AVC-format-2012.pdf, page 16
// numOfPictureParameterSets, always 1
stream.write_1bytes(0x01);
// pictureParameterSetLength
@ -217,7 +217,7 @@ int SrsRawH264Stream::mux_sequence_header(string sps, string pps, u_int32_t dts,
}
// TODO: FIXME: for more profile.
// 5.3.4.2.1 Syntax, H.264-AVC-ISO_IEC_14496-15.pdf, page 16
// 5.3.4.2.1 Syntax, ISO_IEC_14496-15-AVC-format-2012.pdf, page 16
// profile_idc == 100 || profile_idc == 110 || profile_idc == 122 || profile_idc == 144
sh = "";
@ -244,12 +244,12 @@ int SrsRawH264Stream::mux_ipb_frame(char* frame, int nb_frame, string& ibp)
return ret;
}
// 5.3.4.2.1 Syntax, H.264-AVC-ISO_IEC_14496-15.pdf, page 16
// 5.3.4.2.1 Syntax, ISO_IEC_14496-15-AVC-format-2012.pdf, page 16
// lengthSizeMinusOne, or NAL_unit_length, always use 4bytes size
u_int32_t NAL_unit_length = nb_frame;
// mux the avc NALU in "ISO Base Media File Format"
// from H.264-AVC-ISO_IEC_14496-15.pdf, page 20
// from ISO_IEC_14496-15-AVC-format-2012.pdf, page 20
// NALUnitLength
stream.write_4bytes(NAL_unit_length);
// NALUnit
@ -488,7 +488,7 @@ int SrsRawAacStream::mux_sequence_header(SrsRawAacStreamCodec* codec, string& sh
sh = "";
char ch = 0;
// @see aac-mp4a-format-ISO_IEC_14496-3+2001.pdf
// @see ISO_IEC_14496-3-AAC-2001.pdf
// AudioSpecificConfig (), page 33
// 1.6.2.1 AudioSpecificConfig
// audioObjectType; 5 bslbf