//---------------------------------------------------------------------------
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 MEDIAINFO_ADVANCED
if (cc_type>=2 && !Streams[2] && Config->File_Eia708_DisplayEmptyStream_Get())
CreateStream(2);
#endif //MEDIAINFO_ADVANCED
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();
}
//---------------------------------------------------------------------------
void File_DtvccTransport::Read_Buffer_Continue()
{
//Parsing
Element_Begin(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++)
{
Element_Begin("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_Info(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_Info(DtvccTransport_cc_type(cc_type));
}
BS_End();
if (cc_valid)
{
Element_Begin("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
//Parsing
#if MEDIAINFO_DEMUX
Element_Code=Parser_Pos;
#endif //MEDIAINFO_DEMUX
if (Streams[Parser_Pos]==NULL)
Streams[Parser_Pos]=new stream;
if (Streams[Parser_Pos]->Parser==NULL)
{
if (cc_type<2)
{
#if defined(MEDIAINFO_EIA608_YES)
Streams[Parser_Pos]->Parser=new File_Eia608();
#else
Streams[Parser_Pos]->Parser=new File__Analyze();
#endif
}
else
{
#if defined(MEDIAINFO_EIA708_YES)
Streams[Parser_Pos]->Parser=new File_Eia708();
#else
Streams[Parser_Pos]->Parser=new File__Analyze();
#endif
}
Open_Buffer_Init(Streams[Parser_Pos]->Parser);
}
Demux(Buffer+(size_t)(Buffer_Offset+Element_Offset), 2, ContentType_MainStream);
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;
((File_Eia708*)Streams[2]->Parser)->AspectRatio=AspectRatio;
#endif
if (cc_type==3)
Streams[2]->Parser->Open_Buffer_Unsynch();
}
else
{
}
Open_Buffer_Continue(Streams[Parser_Pos]->Parser, Buffer+(size_t)(Buffer_Offset+Element_Offset), 2);
Element_Show();
Element_Offset+=2;
//Filled
if (!Streams[Parser_Pos]->IsFilled && Streams[Parser_Pos]->Parser->Status[IsFilled])
{
if (Count_Get(Stream_General)==0)
Accept("DTVCC Transport");
Streams_Count++;
if (Streams_Count==3)
Fill("DTVCC Transport");
Streams[Parser_Pos]->IsFilled=true;
}
}
else
Skip_XX(2, "Data");
Element_End();
}
else
Skip_XX(2, "Junk");
Element_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_End();
}
