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/* Copyright (c) MediaArea.net SARL. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license that can
* be found in the License.html file in the root of the source tree.
*/
//---------------------------------------------------------------------------
// Pre-compilation
#include "MediaInfo/PreComp.h"
#ifdef __BORLANDC__
#pragma hdrstop
#endif
//---------------------------------------------------------------------------
//---------------------------------------------------------------------------
#include "MediaInfo/Setup.h"
//---------------------------------------------------------------------------
//---------------------------------------------------------------------------
#if defined(MEDIAINFO_DTVCCTRANSPORT_YES)
//---------------------------------------------------------------------------
//---------------------------------------------------------------------------
#include "MediaInfo/Text/File_DtvccTransport.h"
#if defined(MEDIAINFO_EIA608_YES)
#include "MediaInfo/Text/File_Eia608.h"
#endif
#if defined(MEDIAINFO_EIA708_YES)
#include "MediaInfo/Text/File_Eia708.h"
#endif
#if MEDIAINFO_EVENTS
#include "MediaInfo/MediaInfo_Events.h"
#endif //MEDIAINFO_EVENTS
//---------------------------------------------------------------------------
//---------------------------------------------------------------------------
namespace MediaInfoLib
{
//---------------------------------------------------------------------------
//***************************************************************************
// Infos
//***************************************************************************
//---------------------------------------------------------------------------
const char* DtvccTransport_cc_type (int8u cc_type)
{
switch (cc_type)
{
case 0 : return "CEA-608 line 21 field 1 closed captions"; //closed caption 3 if this is second field
case 1 : return "CEA-608 line 21 field 2 closed captions"; //closed caption 4 if this is second field
case 2 : return "DTVCC Channel Packet Data";
case 3 : return "DTVCC Channel Packet Start";
default : return "";
}
}
//***************************************************************************
// Constructor/Destructor
//***************************************************************************
//---------------------------------------------------------------------------
File_DtvccTransport::File_DtvccTransport()
:File__Analyze()
{
//Configuration
ParserName=__T("DTVCC Transport");
#if MEDIAINFO_EVENTS
ParserIDs[0]=MediaInfo_Parser_DtvccTransport;
StreamIDs_Width[0]=1;
#endif //MEDIAINFO_EVENTS
PTS_DTS_Needed=true;
//In
Format=Format_Unknown;
AspectRatio=0;
//Temp
Streams.resize(3); //CEA-608 Field 1, CEA-608 Field 2, CEA-708 Channel
}
//---------------------------------------------------------------------------
File_DtvccTransport::~File_DtvccTransport()
{
for (size_t Pos=0; Pos<Streams.size(); Pos++)
delete Streams[Pos]; //Streams[Pos]=NULL
}
//***************************************************************************
// Streams management
//***************************************************************************
//---------------------------------------------------------------------------
void File_DtvccTransport::Streams_Update()
{
Clear(Stream_Text);
//Per stream
for (size_t Pos=0; Pos<Streams.size(); Pos++)
if (Streams[Pos] && Streams[Pos]->Parser && Streams[Pos]->Parser->Status[IsFilled] /*&& Streams[Pos]->Parser->Status[IsUpdated]*/ && Streams[Pos]->Parser->Count_Get(Stream_Text))
Streams_Update_PerStream(Pos);
}
//---------------------------------------------------------------------------
void File_DtvccTransport::Streams_Update_PerStream(size_t Pos)
{
if (Streams[Pos]==NULL)
return;
Update(Streams[Pos]->Parser);
if (Streams[Pos]->Parser)
{
for (size_t Pos2=0; Pos2<Streams[Pos]->Parser->Count_Get(Stream_Text); Pos2++)
{
Stream_Prepare(Stream_Text);
Merge(*Streams[Pos]->Parser, Stream_Text, Pos2, StreamPos_Last);
Fill(Stream_Text, StreamPos_Last, "MuxingMode", Format==Format_DVD?__T("DVD-Video"):__T("DTVCC Transport"));
Fill(Stream_Text, StreamPos_Last, Text_ID, Streams[Pos]->Parser->Retrieve(Stream_Text, Pos2, Text_ID), true);
}
Ztring LawRating=Streams[Pos]->Parser->Retrieve(Stream_General, 0, General_LawRating);
if (!LawRating.empty())
Fill(Stream_General, 0, General_LawRating, LawRating, true);
Ztring Title=Streams[Pos]->Parser->Retrieve(Stream_General, 0, General_Title);
if (!Title.empty() && Retrieve(Stream_General, 0, General_Title).empty())
Fill(Stream_General, 0, General_Title, Title);
}
}
//---------------------------------------------------------------------------
void File_DtvccTransport::Streams_Finish()
{
Clear(Stream_Text);
if (ServiceDescriptors)
{
if (ServiceDescriptors->ServiceDescriptors608.find(0)!=ServiceDescriptors->ServiceDescriptors608.end())
CreateStream(0);
if (ServiceDescriptors->ServiceDescriptors608.find(1)!=ServiceDescriptors->ServiceDescriptors608.end())
CreateStream(1);
if (!ServiceDescriptors->ServiceDescriptors708.empty())
CreateStream(2);
}
//Per stream
for (size_t Pos=0; Pos<Streams.size(); Pos++)
if (Streams[Pos] && Streams[Pos]->Parser && Streams[Pos]->Parser->Status[IsAccepted] /*&& Streams[Pos]->Parser->Status[IsUpdated]*/)
{
Finish(Streams[Pos]->Parser);
Streams_Update_PerStream(Pos);
}
}
//***************************************************************************
// Buffer - Synchro
//***************************************************************************
//---------------------------------------------------------------------------
void File_DtvccTransport::Read_Buffer_Unsynched()
{
//Parsing
for (size_t Pos=0; Pos<Streams.size(); Pos++)
if (Streams[Pos] && Streams[Pos]->Parser)
Streams[Pos]->Parser->Open_Buffer_Unsynch();
}
//***************************************************************************
// Buffer - Global
//***************************************************************************
//---------------------------------------------------------------------------
void File_DtvccTransport::Read_Buffer_Continue()
{
//Parsing
Element_Begin1(Format==Format_DVD?"DVD Captions":"DTVCC Transport");
int8u cc_count;
bool process_cc_data_flag, additional_data_flag;
BS_Begin();
if (Format==Format_DVD)
{
//Modified DTVCC Transport from DVD
Skip_SB( "field 1 then field 2");
Get_S1 (7, cc_count, "cc_count");
process_cc_data_flag=true;
additional_data_flag=false;
}
else
{
//Normal DTVCC Transport
bool process_em_data_flag;
Get_SB (process_em_data_flag, "process_em_data_flag");
Get_SB (process_cc_data_flag, "process_cc_data_flag");
Get_SB (additional_data_flag, "additional_data_flag");
Get_S1 (5, cc_count, "cc_count");
Skip_S1(8, process_em_data_flag?"em_data":"reserved"); //Emergency message
}
BS_End();
if (process_cc_data_flag)
{
for (int8u Pos=0; Pos<cc_count; Pos++)
{
if (Element_Offset+3>Element_Size)
break; //Found one stream with bad cc_count, we discard cc_count without flagging the stream as untrusted for the moment
Element_Begin1("cc");
int8u cc_type;
bool cc_valid;
BS_Begin();
Mark_1();
Mark_1_NoTrustError();
Mark_1_NoTrustError();
Mark_1_NoTrustError();
Mark_1_NoTrustError();
if (Format==Format_DVD)
{
//Modified DTVCC Transport from DVD
Mark_1();
Mark_1();
Get_S1 (1, cc_type, "cc_type"); Param_Info1(DtvccTransport_cc_type(cc_type));
cc_valid=true;
}
else
{
//Normal DTVCC Transport
Get_SB ( cc_valid, "cc_valid");
Get_S1 (2, cc_type, "cc_type"); Param_Info1(DtvccTransport_cc_type(cc_type));
}
BS_End();
if (cc_valid)
{
Element_Begin1("cc_data");
//Calculating the parser position
int8u Parser_Pos=cc_type==3?2:cc_type; //cc_type 2 and 3 are for the same text
//Stream creation
if (Streams[Parser_Pos]==NULL)
CreateStream(Parser_Pos);
//Parsing
#if MEDIAINFO_DEMUX
Element_Code=Parser_Pos;
Demux(Buffer+(size_t)(Buffer_Offset+Element_Offset), 2, ContentType_MainStream);
#endif //MEDIAINFO_DEMUX
if (!Streams[Parser_Pos]->Parser->Status[IsFinished])
{
//Parsing
if (Streams[Parser_Pos]->Parser->PTS_DTS_Needed)
{
Streams[Parser_Pos]->Parser->FrameInfo.PCR=FrameInfo.PCR;
Streams[Parser_Pos]->Parser->FrameInfo.PTS=FrameInfo.PTS;
Streams[Parser_Pos]->Parser->FrameInfo.DTS=FrameInfo.DTS;
}
if (Parser_Pos==2)
{
#if defined(MEDIAINFO_EIA708_YES)
((File_Eia708*)Streams[2]->Parser)->cc_type=cc_type;
if (AspectRatio)
((File_Eia708*)Streams[2]->Parser)->AspectRatio=AspectRatio;
#endif
if (cc_type==3)
{
((File_Eia708*)Streams[2]->Parser)->cc_type=4; //Magic value saying that the buffer must be kept (this is only a point of synchro from the undelying layer)
Open_Buffer_Continue(Streams[Parser_Pos]->Parser, Buffer+(size_t)(Buffer_Offset+Element_Offset), 0);
((File_Eia708*)Streams[2]->Parser)->cc_type=3;
}
}
else
{
}
#if defined(MEDIAINFO_EIA608_YES) || defined(MEDIAINFO_EIA708_YES)
Streams[Parser_Pos]->Parser->ServiceDescriptors=ServiceDescriptors;
#endif
Open_Buffer_Continue(Streams[Parser_Pos]->Parser, Buffer+(size_t)(Buffer_Offset+Element_Offset), 2);
Element_Show();
Element_Offset+=2;
}
else
Skip_XX(2, "Data");
Element_End0();
}
else
Skip_XX(2, "Junk");
Element_End0();
}
FILLING_BEGIN();
if (!Status[IsAccepted])
Accept("DTVCC Transport");
FILLING_END();
}
else
Skip_XX(cc_count*2, "Junk");
if (Format==Format_A53_4_GA94_03)
{
//Normal DTVCC Transport
BS_Begin();
Mark_1_NoTrustError();
Mark_1_NoTrustError();
Mark_1_NoTrustError();
Mark_1_NoTrustError();
Mark_1_NoTrustError();
Mark_1_NoTrustError();
Mark_1_NoTrustError();
Mark_1_NoTrustError();
BS_End();
if (additional_data_flag)
{
Skip_XX(Element_Size-Element_Offset, "additional_user_data");
}
while (Element_Offset<Element_Size)
{
Skip_B1( "Zero"); //TODO: test Zero
}
}
Element_End0();
}
//***************************************************************************
// Helpers
//***************************************************************************
//---------------------------------------------------------------------------
void File_DtvccTransport::CreateStream(int8u Parser_Pos)
{
if (Streams[Parser_Pos])
return; //Already done
//Parsing
#if MEDIAINFO_DEMUX
Element_Code=Parser_Pos;
#endif //MEDIAINFO_DEMUX
//Creation of the parser
Streams[Parser_Pos]=new stream;
#if defined(MEDIAINFO_EIA608_YES) || defined(MEDIAINFO_EIA708_YES)
if (Parser_Pos<2)
{
#if defined(MEDIAINFO_EIA608_YES)
Streams[Parser_Pos]->Parser=new File_Eia608();
((File_Eia608*)Streams[Parser_Pos]->Parser)->cc_type=Parser_Pos;
#else //defined(MEDIAINFO_EIA608_YES)
Streams[Parser_Pos]->Parser=new File__Analyze();
#endif //defined(MEDIAINFO_EIA608_YES)
}
else
{
#if defined(MEDIAINFO_EIA708_YES)
Streams[Parser_Pos]->Parser=new File_Eia708();
#else //defined(MEDIAINFO_EIA708_YES)
Streams[Parser_Pos]->Parser=new File__Analyze();
#endif //defined(MEDIAINFO_EIA708_YES)
}
#else //defined(MEDIAINFO_EIA608_YES) || defined(MEDIAINFO_EIA708_YES)
Streams[Parser_Pos]->Parser=new File__Analyze();
#endif //defined(MEDIAINFO_EIA608_YES) || defined(MEDIAINFO_EIA708_YES)
//Init
Streams[Parser_Pos]->Parser->ServiceDescriptors=ServiceDescriptors;
Open_Buffer_Init(Streams[Parser_Pos]->Parser);
Streams[Parser_Pos]->Parser->Accept();
}
//***************************************************************************
// C++
//***************************************************************************
} //NameSpace
#endif //MEDIAINFO_DTVCCTRANSPORT_YES
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