BeginEnumDescriptors(gb, nType, nLength) { // ES_info_length
switch (nType) {
case DT_ISO_639_LANGUAGE :
gb.ReadBuffer(DescBuffer, nLength);
strLanguage = ConvertString (DescBuffer, 3);
break;
case DT_AC3_AUDIO :
pes_stream_type = AUDIO_STREAM_AC3;
SkipDescriptor (gb, nType, nLength);
break;
case DT_EXTENDED_AC3_AUDIO :
pes_stream_type = AUDIO_STREAM_AC3_PLUS;
SkipDescriptor (gb, nType, nLength);
break;
case DT_SUBTITLING : {
gb.ReadBuffer(DescBuffer, nLength);
strLanguage = ConvertString (DescBuffer, 3);
pes_stream_type = SUBTITLE_STREAM;
}
break;
default :
SkipDescriptor (gb, nType, nLength);
break;
}
}
HRESULT CMpeg2DataParser::ParsePMT(CDVBChannel& Channel)
{
HRESULT hr;
CComPtr<ISectionList> pSectionList;
DWORD dwLength;
PSECTION data;
WORD wTSID;
WORD wSectionLength;
Channel.SetVideoFps(DVB_FPS_NONE);
Channel.SetVideoChroma(DVB_Chroma_NONE);
CheckNoLog(m_pData->GetSection((PID)Channel.GetPMT(), SI_PMT, &m_Filter, 15000, &pSectionList));
CheckNoLog(pSectionList->GetSectionData(0, &dwLength, &data));
CGolombBuffer gb((BYTE*)data, dwLength);
// TS_program_map_section()
CheckNoLog(ParseSIHeader(gb, SI_PMT, wSectionLength, wTSID));
gb.BitRead(3); // reserved
Channel.SetPCR((ULONG)gb.BitRead(13)); // PCR_PID
gb.BitRead(4); // reserved
BeginEnumDescriptors(gb, nType, nLength) { // for (i=0;i<N;i++) {
SkipDescriptor(gb, nType, nLength); // descriptor()
}
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;
}
