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/*
* $Id$
*
* (C) 2006-2012 see Authors.txt
*
* This file is part of MPC-HC.
*
* MPC-HC is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* MPC-HC is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
#include "stdafx.h"
#include <BaseClasses/streams.h>
#include <mpeg2data.h>
#include "../../DSUtil/GolombBuffer.h"
#include "Mpeg2SectionData.h"
#define BeginEnumDescriptors(gb, nType, nLength) \
{ \
BYTE DescBuffer[256]; \
int nLimit = gb.BitRead(12)+gb.GetPos(); \
while (gb.GetPos() < nLimit) \
{ \
MPEG2_DESCRIPTOR nType = (MPEG2_DESCRIPTOR)gb.BitRead(8); \
WORD nLength = gb.BitRead(8);
#define SkipDescriptor(gb, nType, nLength) \
gb.ReadBuffer(DescBuffer, nLength); \
TRACE ("Skipped descriptor : 0x%02x\n", nType); \
UNREFERENCED_PARAMETER(nType);
#define EndEnumDescriptors }}
CMpeg2DataParser::CMpeg2DataParser(IBaseFilter* pFilter)
{
m_pData = pFilter;
memset(&m_Filter, 0, sizeof(m_Filter));
m_Filter.bVersionNumber = 1;
m_Filter.wFilterSize = MPEG2_FILTER_VERSION_1_SIZE;
m_Filter.fSpecifySectionNumber = TRUE;
}
CString CMpeg2DataParser::ConvertString (BYTE* pBuffer, int nLength)
{
static const UINT16 codepages[0x20] = {
28591, // 00 - ISO 8859-1 Latin I
28595, // 01 - ISO 8859-5 Cyrillic
28596, // 02 - ISO 8859-6 Arabic
28597, // 03 - ISO 8859-7 Greek
28598, // 04 - ISO 8859-8 Hebrew
28599, // 05 - ISO 8859-9 Latin 5
28591, // 06 - ??? - ISO/IEC 8859-10 - Latin alphabet No. 6
28591, // 07 - ??? - ISO/IEC 8859-11 - Latin/Thai (draft only)
28591, // 08 - ??? - ISO/IEC 8859-12 - possibly reserved for Indian
28591, // 09 - ??? - ISO/IEC 8859-13 - Latin alphabet No. 7
28591, // 0a - ??? - ISO/IEC 8859-14 - Latin alphabet No. 8 (Celtic)
28605, // 0b - ISO 8859-15 Latin 9
28591, // 0c - réservé
28591, // 0d - réservé
28591, // 0e - réservé
28591, // 0f - réservé
// TODO !
28591, 28591, 28591, 28591, 28591, 28591, 28591, 28591,
28591, 28591, 28591, 28591, 28591, 28591, 28591, 28591
};
UINT cp = CP_ACP;
int nDestSize;
CString strResult;
if (nLength>0 && pBuffer[0]<0x20) {
cp = codepages[pBuffer[0]];
pBuffer++;
nLength--;
}
nDestSize = MultiByteToWideChar (cp, MB_PRECOMPOSED, (LPCSTR)pBuffer, nLength, NULL, 0);
if (nDestSize < 0) {
return strResult;
}
MultiByteToWideChar (cp, MB_PRECOMPOSED, (LPCSTR)pBuffer, nLength, strResult.GetBuffer(nLength), nDestSize);
strResult.ReleaseBuffer();
return strResult;
}
DVB_STREAM_TYPE CMpeg2DataParser::ConvertToDVBType(PES_STREAM_TYPE nType)
{
switch (nType) {
case VIDEO_STREAM_MPEG1 :
case VIDEO_STREAM_MPEG2 :
return DVB_MPV;
case AUDIO_STREAM_MPEG1 :
case AUDIO_STREAM_MPEG2 :
return DVB_MPA;
case VIDEO_STREAM_H264 :
return DVB_H264;
case AUDIO_STREAM_AC3 :
return DVB_AC3;
case AUDIO_STREAM_AC3_PLUS :
return DVB_EAC3;
case SUBTITLE_STREAM :
return DVB_SUBTITLE;
}
return DVB_UNKNOWN;
}
HRESULT CMpeg2DataParser::ParseSIHeader(CGolombBuffer& gb, DVB_SI SIType, WORD& wSectionLength, WORD& wTSID)
{
if (gb.BitRead(8) != SIType) {
return ERROR_INVALID_DATA; // table_id
}
gb.BitRead(1); // section_syntax_indicator
gb.BitRead(1); // reserved_future_use
gb.BitRead(2); // reserved
wSectionLength = gb.BitRead(12); // section_length
wTSID = gb.BitRead(16); // transport_stream_id
gb.BitRead(2); // reserved
gb.BitRead(5); // version_number
gb.BitRead(1); // current_next_indicator
gb.BitRead(8); // section_number
gb.BitRead(8); // last_section_number
return S_OK;
}
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 CMpeg2DataParser::ParsePAT()
{
HRESULT hr;
CComPtr<ISectionList> pSectionList;
DWORD dwLength;
PSECTION data;
WORD wTSID;
WORD wSectionLength;
CheckNoLog (m_pData->GetSection (PID_PAT, SI_PAT, &m_Filter, 5000, &pSectionList));
CheckNoLog (pSectionList->GetSectionData (0, &dwLength, &data));
CGolombBuffer gb ((BYTE*)data, dwLength);
// program_association_section()
CheckNoLog (ParseSIHeader (gb, SI_PAT, wSectionLength, wTSID));
while (gb.GetSize() - gb.GetPos() > 4) {
WORD program_number = gb.BitRead(16); // program_number
gb.BitRead(3); // reserved
if (program_number==0) {
gb.BitRead(13); // network_PID
} else {
WORD program_map_PID = gb.BitRead(13); // program_map_PID
if (Channels.Lookup(program_number)) {
Channels [program_number].SetPMT (program_map_PID);
ParsePMT (Channels [program_number]);
}
}
}
return S_OK;
}
HRESULT CMpeg2DataParser::ParsePMT(CDVBChannel& Channel)
{
HRESULT hr;
CComPtr<ISectionList> pSectionList;
DWORD dwLength;
PSECTION data;
WORD wTSID;
WORD wSectionLength;
CheckNoLog (m_pData->GetSection (Channel.GetPMT(), SI_PMT, &m_Filter, 5000, &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 (gb.BitRead(13)); // PCR_PID
gb.BitRead(4); // reserved
BeginEnumDescriptors(gb, nType, nLength) { // for (i=0;i<N;i++) {
SkipDescriptor (gb, nType, nLength); // descriptor()
}
EndEnumDescriptors
while (gb.GetSize() - gb.GetPos() > 4) {
PES_STREAM_TYPE pes_stream_type;
DVB_STREAM_TYPE dvb_stream_type;
WORD wPID;
CString strLanguage;
pes_stream_type = (PES_STREAM_TYPE)gb.BitRead(8); // stream_type
gb.BitRead(3); // reserved
wPID = gb.BitRead(13); // elementary_PID
gb.BitRead(4); // reserved
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;
}
}
EndEnumDescriptors
if ((dvb_stream_type = ConvertToDVBType(pes_stream_type)) != DVB_UNKNOWN) {
Channel.AddStreamInfo (wPID, dvb_stream_type, pes_stream_type, strLanguage);
}
}
return S_OK;
}
HRESULT CMpeg2DataParser::SetTime(CGolombBuffer& gb, PresentFollowing &NowNext)
{
char DescBuffer[10];
time_t tTime1 ,tTime2;
tm tmTime1;
tm* ptmTime;
long nDuration;
long timezone;
int daylight;
// init tm structures
time( &tTime1 );
tmTime1 = *localtime( &tTime1 );
_tzset();
_get_timezone(&timezone);
if (_get_daylight(&daylight)) {
timezone -= daylight * 3600;
}
// Start time:
tmTime1.tm_hour = gb.BitRead(4)*10;
tmTime1.tm_hour += gb.BitRead(4);
tmTime1.tm_min = gb.BitRead(4)*10;
tmTime1.tm_min += gb.BitRead(4);
tmTime1.tm_sec = gb.BitRead(4)*10;
tmTime1.tm_sec += gb.BitRead(4);
tTime1 = mktime(&tmTime1) - timezone;
ptmTime = localtime(&tTime1);
tTime1 = mktime(ptmTime);
strftime (DescBuffer,6,"%H:%M",ptmTime);
DescBuffer[6] = 0;
NowNext.StartTime = static_cast<CString> (DescBuffer);
// Duration:
nDuration = 36000*gb.BitRead(4);
nDuration += 3600*gb.BitRead(4);
nDuration += 600*gb.BitRead(4);
nDuration += 60*gb.BitRead(4);
nDuration += 10*gb.BitRead(4);
nDuration += gb.BitRead(4);
tTime2 = tTime1 + nDuration;
ptmTime = localtime(&tTime2);
strftime (DescBuffer,6,"%H:%M",ptmTime);
DescBuffer[6] = 0;
NowNext.Duration = static_cast<CString> (DescBuffer);
return S_OK;
}
HRESULT CMpeg2DataParser::ParseEIT(ULONG ulSID, PresentFollowing &NowNext)
{
HRESULT hr;
CComPtr<ISectionList> pSectionList;
DWORD dwLength;
PSECTION data;
WORD ulGetSID;
EventInformationSection InfoEvent;
int nLen;
int descriptorNumber;
int nbItems;
CString itemDesc, itemText;
CString text;
do {
CheckNoLog (m_pData->GetSection (PID_EIT, SI_EIT_act, NULL, 5000, &pSectionList));
CheckNoLog (pSectionList->GetSectionData (0, &dwLength, &data));
CGolombBuffer gb ((BYTE*)data, dwLength);
InfoEvent.TableID = gb.BitRead(8);
InfoEvent.SectionSyntaxIndicator = gb.BitRead(1);
gb.BitRead(3);
InfoEvent.SectionLength = gb.BitRead(12);
ulGetSID = gb.BitRead(8);
ulGetSID += 0x100 * gb.BitRead(8);
InfoEvent.ServiceId = ulGetSID; // This is really strange, ServiceID should be uimsbf ???
gb.BitRead(2);
InfoEvent.VersionNumber = gb.BitRead(5);
InfoEvent.CurrentNextIndicator = gb.BitRead(1);
InfoEvent.SectionNumber = gb.BitRead(8);
InfoEvent.LastSectionNumber = gb.BitRead(8);
InfoEvent.TransportStreamID = gb.BitRead(16);
InfoEvent.OriginalNetworkID = gb.BitRead(16);
InfoEvent.SegmentLastSectionNumber = gb.BitRead(8);
InfoEvent.LastTableID = gb.BitRead(8);
// Info event
InfoEvent.EventID = gb.BitRead(16);
InfoEvent.StartDate = gb.BitRead(16);
SetTime(gb, NowNext);
InfoEvent.RunninStatus = gb.BitRead(3);
InfoEvent.FreeCAMode = gb.BitRead(1);
NowNext.ExtendedDescriptorsItems.RemoveAll();
NowNext.ExtendedDescriptorsTexts.RemoveAll();
if ((InfoEvent.ServiceId == ulSID) && (InfoEvent.CurrentNextIndicator == 1) && (InfoEvent.RunninStatus == 4)) {
// Descriptors:
BeginEnumDescriptors(gb, nType, nLength) {
switch (nType) {
case DT_SHORT_EVENT:
gb.BitRead(24); // ISO_639_language_code
nLen = gb.BitRead(8); // event_name_length
gb.ReadBuffer(DescBuffer, nLen);
NowNext.cPresent = ConvertString(DescBuffer, nLen);
nLen = gb.BitRead(8); // text_length
gb.ReadBuffer(DescBuffer, nLen);
NowNext.SummaryDesc = ConvertString(DescBuffer, nLen);
break;
case DT_EXTENDED_EVENT:
descriptorNumber = gb.BitRead(4); // descriptor_number
gb.BitRead(4); // last_descriptor_number
gb.BitRead(24); // ISO_639_language_code
nbItems = gb.BitRead(8); // length_of_items
for (int i=0; i<nbItems; i++) {
nLen = gb.BitRead(8); // item_description_length
gb.ReadBuffer(DescBuffer, nLen);
itemDesc = ConvertString(DescBuffer, nLen);
nLen = gb.BitRead(8); // item_length
gb.ReadBuffer(DescBuffer, nLen);
itemText = ConvertString(DescBuffer, nLen);
NowNext.ExtendedDescriptorsItems.SetAt(itemDesc, itemText);
}
nLen = gb.BitRead(8); // text_length
gb.ReadBuffer(DescBuffer, nLen);
text = ConvertString(DescBuffer, nLen);
if (descriptorNumber == 0) { // new descriptor set
NowNext.ExtendedDescriptorsTexts.AddTail(text);
} else {
NowNext.ExtendedDescriptorsTexts.GetTail().Append(text);
}
break;
default:
SkipDescriptor (gb, nType, nLength);
break;
}
}
EndEnumDescriptors
}
m_Filter.SectionNumber++;
pSectionList.Release();
} while (((InfoEvent.ServiceId != ulSID) || (InfoEvent.CurrentNextIndicator != 1) || (InfoEvent.RunninStatus != 4)) &&
(m_Filter.SectionNumber <= 22));
if (InfoEvent.ServiceId != ulSID) {
NowNext.StartTime = _T("");
NowNext.Duration = _T("");
NowNext.cPresent = _T(" Info not available.");
NowNext.SummaryDesc = _T("");
NowNext.cFollowing = _T("");
}
return S_OK;
}
HRESULT CMpeg2DataParser::ParseNIT()
{
HRESULT hr;
CComPtr<ISectionList> pSectionList;
DWORD dwLength;
PSECTION data;
WORD wTSID;
WORD wSectionLength;
WORD transport_stream_loop_length;
CheckNoLog (m_pData->GetSection (PID_NIT, SI_NIT, &m_Filter, 5000, &pSectionList));
CheckNoLog (pSectionList->GetSectionData (0, &dwLength, &data));
CGolombBuffer gb ((BYTE*)data, dwLength);
// network_information_section()
CheckNoLog (ParseSIHeader (gb, SI_NIT, wSectionLength, wTSID));
gb.BitRead(4); // reserved_future_use
BeginEnumDescriptors(gb, nType, nLength) { // for (i=0;i<N;i++) {
SkipDescriptor (gb, nType, nLength); // descriptor()
}
EndEnumDescriptors
gb.BitRead(4); // reserved_future_use
transport_stream_loop_length = gb.BitRead(12); // network_descriptors_length
while (gb.GetSize() - gb.GetPos() > 4) {
WORD transport_stream_id = gb.BitRead(16); // transport_stream_id
UNUSED_ALWAYS(transport_stream_id);
WORD original_network_id = gb.BitRead(16); // original_network_id
UNUSED_ALWAYS(original_network_id);
gb.BitRead(4); // reserved_future_use
BeginEnumDescriptors (gb, nType, nLength) {
switch (nType) {
case DT_LOGICAL_CHANNEL :
for (int i=0; i<nLength/4; i++) {
WORD service_id = gb.BitRead (16);
gb.BitRead(6);
WORD logical_channel_number = gb.BitRead(10);
if (Channels.Lookup(service_id)) {
Channels[service_id].SetOriginNumber (logical_channel_number);
TRACE ("NIT association : %d -> %S\n", logical_channel_number, Channels[service_id].ToString());
}
}
break;
default :
SkipDescriptor (gb, nType, nLength);
break;
}
}
EndEnumDescriptors
}
return S_OK;
}
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