HRESULT CMpeg2DataParser::ParseSDT(ULONG ulFreq) { HRESULT hr; CComPtr<ISectionList> pSectionList; DWORD dwLength; PSECTION data; WORD wTSID; WORD wONID; WORD wSectionLength; CheckNoLog (m_pData->GetSection (PID_SDT, SI_SDT, &m_Filter, 5000, &pSectionList)); CheckNoLog (pSectionList->GetSectionData (0, &dwLength, &data)); CGolombBuffer gb ((BYTE*)data, dwLength); // service_description_section() CheckNoLog (ParseSIHeader (gb, SI_SDT, wSectionLength, wTSID)); wONID = gb.BitRead(16); // original_network_id gb.BitRead(8); // reserved_future_use while (gb.GetSize() - gb.GetPos() > 4) { CDVBChannel Channel; Channel.SetFrequency (ulFreq); Channel.SetTSID (wTSID); Channel.SetONID (wONID); Channel.SetSID (gb.BitRead(16)); // service_id uimsbf gb.BitRead(6); // reserved_future_use bslbf gb.BitRead(1); // EIT_schedule_flag bslbf Channel.SetNowNextFlag(!!gb.BitRead(1)); // EIT_present_following_flag bslbf gb.BitRead(3); // running_status uimsbf Channel.SetEncrypted (!!gb.BitRead(1)); // free_CA_mode bslbf // Descriptors: BeginEnumDescriptors(gb, nType, nLength) { switch (nType) { case DT_SERVICE : gb.BitRead(8); // service_type nLength = gb.BitRead(8); // service_provider_name_length gb.ReadBuffer (DescBuffer, nLength); // service_provider_name nLength = gb.BitRead(8); // service_name_length gb.ReadBuffer (DescBuffer, nLength); // service_name DescBuffer[nLength] = 0; Channel.SetName (ConvertString (DescBuffer, nLength)); TRACE ("%15S %d\n", Channel.GetName(), Channel.GetSID()); break; default : SkipDescriptor (gb, nType, nLength); // descriptor() break; } } EndEnumDescriptors if (!Channels.Lookup(Channel.GetSID())) { Channels [Channel.GetSID()] = Channel; } } return S_OK; }
HRESULT CHdmvSub::ParseSample(IMediaSample* pSample) { CheckPointer (pSample, E_POINTER); HRESULT hr; REFERENCE_TIME rtStart = INVALID_TIME, rtStop = INVALID_TIME; BYTE* pData = NULL; int lSampleLen; hr = pSample->GetPointer(&pData); if(FAILED(hr) || pData == NULL) { return hr; } lSampleLen = pSample->GetActualDataLength(); pSample->GetTime(&rtStart, &rtStop); if (pData) { CGolombBuffer SampleBuffer (pData, lSampleLen); while (!SampleBuffer.IsEOF()) { if (m_nCurSegment == NO_SEGMENT) { HDMV_SEGMENT_TYPE nSegType = (HDMV_SEGMENT_TYPE)SampleBuffer.ReadByte(); USHORT nUnitSize = SampleBuffer.ReadShort(); lSampleLen -=3; switch (nSegType) { case PALETTE : case OBJECT : case PRESENTATION_SEG : case END_OF_DISPLAY : m_nCurSegment = nSegType; AllocSegment (nUnitSize); break; case WINDOW_DEF : case INTERACTIVE_SEG : case HDMV_SUB1 : case HDMV_SUB2 : // Ignored stuff... SampleBuffer.SkipBytes(nUnitSize); break; default : return VFW_E_SAMPLE_REJECTED; } } if (m_nCurSegment != NO_SEGMENT) { if (m_nSegBufferPos < m_nSegSize) { int nSize = min (m_nSegSize-m_nSegBufferPos, lSampleLen); SampleBuffer.ReadBuffer (m_pSegBuffer+m_nSegBufferPos, nSize); m_nSegBufferPos += nSize; } if (m_nSegBufferPos >= m_nSegSize) { CGolombBuffer SegmentBuffer (m_pSegBuffer, m_nSegSize); switch (m_nCurSegment) { case PALETTE : TRACE_HDMVSUB ("CHdmvSub:PALETTE rtStart=%10I64d\n", rtStart); ParsePalette(&SegmentBuffer, m_nSegSize); break; case OBJECT : //TRACE_HDMVSUB ("CHdmvSub:OBJECT %S\n", ReftimeToString(rtStart)); ParseObject(&SegmentBuffer, m_nSegSize); break; case PRESENTATION_SEG : TRACE_HDMVSUB ("CHdmvSub:PRESENTATION_SEG %S (size=%d)\n", ReftimeToString(rtStart), m_nSegSize); if (m_pCurrentObject) { m_pCurrentObject->m_rtStop = rtStart; m_pObjects.AddTail (m_pCurrentObject); TRACE_HDMVSUB ("CHdmvSub:HDMV : %S => %S\n", ReftimeToString (m_pCurrentObject->m_rtStart), ReftimeToString(rtStart)); m_pCurrentObject = NULL; } if (ParsePresentationSegment(&SegmentBuffer) > 0) { m_pCurrentObject->m_rtStart = rtStart; m_pCurrentObject->m_rtStop = _I64_MAX; } break; case WINDOW_DEF : // TRACE_HDMVSUB ("CHdmvSub:WINDOW_DEF %S\n", ReftimeToString(rtStart)); break; case END_OF_DISPLAY : // TRACE_HDMVSUB ("CHdmvSub:END_OF_DISPLAY %S\n", ReftimeToString(rtStart)); break; default : TRACE_HDMVSUB ("CHdmvSub:UNKNOWN Seg %d rtStart=0x%10dd\n", m_nCurSegment, rtStart); } m_nCurSegment = NO_SEGMENT; } } } } return hr; }
HRESULT CHdmvSub::ParseSample(BYTE* pData, int lSampleLen, REFERENCE_TIME rtStart, REFERENCE_TIME rtStop) { HRESULT hr = S_OK; if (pData) { CGolombBuffer SampleBuffer (pData, lSampleLen); while (!SampleBuffer.IsEOF()) { if (m_nCurSegment == NO_SEGMENT) { HDMV_SEGMENT_TYPE nSegType = (HDMV_SEGMENT_TYPE)SampleBuffer.ReadByte(); USHORT nUnitSize = SampleBuffer.ReadShort(); lSampleLen -=3; switch (nSegType) { case PALETTE : case OBJECT : case PRESENTATION_SEG : case END_OF_DISPLAY : m_nCurSegment = nSegType; AllocSegment(nUnitSize); break; case WINDOW_DEF : case INTERACTIVE_SEG : case HDMV_SUB1 : case HDMV_SUB2 : // Ignored stuff... SampleBuffer.SkipBytes(nUnitSize); break; default : return VFW_E_SAMPLE_REJECTED; } } if (m_nCurSegment != NO_SEGMENT) { if (m_nSegBufferPos < m_nSegSize) { int nSize = min(m_nSegSize - m_nSegBufferPos, lSampleLen); SampleBuffer.ReadBuffer(m_pSegBuffer + m_nSegBufferPos, nSize); m_nSegBufferPos += nSize; } if (m_nSegBufferPos >= m_nSegSize) { CGolombBuffer SegmentBuffer(m_pSegBuffer, m_nSegSize); switch (m_nCurSegment) { case PALETTE : TRACE_HDMVSUB(_T("CHdmvSub::ParseSample() : PALETTE\n")); ParsePalette(&SegmentBuffer, m_nSegSize); break; case OBJECT : TRACE_HDMVSUB(_T("CHdmvSub::ParseSample() : OBJECT\n")); ParseObject(&SegmentBuffer, m_nSegSize); break; case PRESENTATION_SEG : TRACE_HDMVSUB(_T("CHdmvSub::ParseSample() : PRESENTATION_SEG = [%10I64d], %s, size = %d\n"), rtStart, ReftimeToString(rtStart), m_nSegSize); ParsePresentationSegment(&SegmentBuffer, rtStart); break; case WINDOW_DEF : //TRACE_HDMVSUB(_T("CHdmvSub::ParseSample() : WINDOW_DEF = %10I64d, %S\n"), rtStart, ReftimeToString(rtStart)); break; case END_OF_DISPLAY : //TRACE_HDMVSUB(_T("CHdmvSub::ParseSample() : END_OF_DISPLAY = %10I64d, %S\n"), rtStart, ReftimeToString(rtStart)); break; default : TRACE_HDMVSUB(_T("CHdmvSub::ParseSample() : UNKNOWN Seg [%d] = [%10I64d], %s\n"), m_nCurSegment, rtStart, ReftimeToString(rtStart)); } m_nCurSegment = NO_SEGMENT; } } } } return hr; }