public static byte[] MediaFrame2TSData(MediaFrame frame, TSProgramManage pm) { var msOutput = new MemoryStream(); var pes = PESPacket.MediaFrame2PES(frame); var pes_buffer = pes.GetBytes(); var msInput = new MemoryStream(pes_buffer); int PID = frame.nIsAudio == 1 ? 257 : 258; bool isFirstPack = true; do { var payload_unit_start_indicator = 0; var size = (int)(msInput.Length - msInput.Position); var max_data_len = 188 - 4;//4B为包头长度 var data_len = 0; AdaptationInfo ai = null; if ((isFirstPack || size < max_data_len)) { if (isFirstPack && (frame.nIsAudio == 0 || true)) { max_data_len = 188 - 4 - 8; //5B为包头长度 8B为adaptation长度 data_len = Math.Min(max_data_len, size); var adaptation_field_length = 188 - 4 - data_len - 1; //1B为adaptation的头,这1B不算在adaptation_field_length中 var pcr_bas = (frame.nTimetick - pm.FirstFrameTimeTick) * 90; //这里为什么是*45我也不知道, ai = new AdaptationInfo() { adaptation_field_length = (byte)adaptation_field_length, random_access_indicator = 1, PCR_flag = 1, PCR_base = pcr_bas, }; payload_unit_start_indicator = 1; } else { max_data_len = 188 - 4 - 1;//4B为包头长度 8B为adaptation长度 if (size < max_data_len) { data_len = Math.Min(max_data_len, size); var adaptation_field_length = 188 - 4 - data_len - 1; ai = new AdaptationInfo(); ai.adaptation_field_length = (byte)adaptation_field_length; } else { payload_unit_start_indicator = 0; data_len = size; } } } else { data_len = max_data_len; } byte[] data = new byte[data_len]; msInput.Read(data, 0, data.Length); TSPacket pack_pat = new TSPacket() { sync_byte = 0x47, transport_error_indicator = 0, payload_unit_start_indicator = (byte)payload_unit_start_indicator,//一帧第一个packet或者这个packet需要fill字节时 transport_priority = 0, PID = (ushort)PID, transport_scrambling_control = 0, adaptation_field_control = (byte)(ai != null ? 3 : 1), continuity_counter = pm.GetCounter(PID), AdaptationField = ai, data = data }; var buf = pack_pat.GetBytes(); msOutput.Write(buf, 0, buf.Length); isFirstPack = false; } while (msInput.Position < msInput.Length); var result = msOutput.ToArray(); return(result); }
public static byte[] GetPMTPATData(bool isOnlyVideo = false) { if (_pmt_pat_tsdata == null) { var msOutput = new MemoryStream(); TSProgramManage ts_pm = new TSProgramManage(); TS_PAT pat = new TS_PAT(); var pat_data = pat.GetBytes(); TSPacket pack_pat = new TSPacket() { sync_byte = 0x47, transport_error_indicator = 0, payload_unit_start_indicator = 1, transport_priority = 0, PID = 0, transport_scrambling_control = 0, adaptation_field_control = 1, continuity_counter = ts_pm.GetCounter(0), data = pat_data, }; var pack_pat_data = pack_pat.GetBytes(); var pack_pat_tmp = new TSPacket() { ProgramManage = ts_pm, }; msOutput.Write(pack_pat_data, 0, pack_pat_data.Length); //pack_pat_tmp.SetBytes(pack_pat_data); //pack_pat_tmp.Decode(); TS_PMT pmt = new TS_PMT(); var pmt_data = isOnlyVideo ? pmt.GetVideoBytes() : pmt.GetBytes(); TSPacket pack_pmt = new TSPacket() { sync_byte = 0x47, transport_error_indicator = 0, payload_unit_start_indicator = 1, transport_priority = 0, PID = 256,//PMT_PID transport_scrambling_control = 0, adaptation_field_control = 1, continuity_counter = ts_pm.GetCounter(256), data = pmt_data, }; var pack_pmt_data = pack_pmt.GetBytes(); var pack_pmt_tmp = new TSPacket() { ProgramManage = ts_pm, }; msOutput.Write(pack_pmt_data, 0, pack_pmt_data.Length); //pack_pmt_tmp.SetBytes(pack_pmt_data); //pack_pmt_tmp.Decode(); var _out = msOutput.ToArray(); _pmt_pat_tsdata = _out; } return(_pmt_pat_tsdata); }