//---------------------------------------------------------------------------
void File_Dirac::Synched_Init()
{
//Temp
Dirac_base_video_format((int32u)-1, frame_width, frame_height, chroma_format, source_sampling,
clean_width, clean_height, clean_left_offset, clean_top_offset,
frame_rate, pixel_aspect_ratio);
//Default stream values
Streams.resize(0x100);
Streams[0x00].Searching_Payload=true; //Sequence header
}
//---------------------------------------------------------------------------
bool File_Dirac::Synchronize()
{
//Synchronizing
while (Buffer_Offset+5<=Buffer_Size
&& CC4(Buffer+Buffer_Offset)!=0x42424344) //"BBCD"
Buffer_Offset++;
if (Buffer_Offset+5>Buffer_Size)
{
//Parsing last bytes
if (Buffer_Offset+4==Buffer_Size)
{
if (CC4(Buffer+Buffer_Offset)!=0x42424344)
{
Buffer_Offset++;
if (CC3(Buffer+Buffer_Offset)!=0x424243)
{
Buffer_Offset++;
if (CC2(Buffer+Buffer_Offset)!=0x4242)
{
Buffer_Offset++;
if (CC1(Buffer+Buffer_Offset)!=0x42)
Buffer_Offset++;
}
}
}
}
return false;
}
//Synched is OK
Synched=true;
if (Streams.empty())
{
//Count of a Packets
Frame_Count=0;
//Temp
Dirac_base_video_format((int32u)-1, frame_width, frame_height, chroma_format, source_sampling,
clean_width, clean_height, clean_left_offset, clean_top_offset,
frame_rate, pixel_aspect_ratio);
//Default stream values
Streams.resize(0x100);
Streams[0x00].Searching_Payload=true; //Sequence header
}
return true;
}
//---------------------------------------------------------------------------
File_Dirac::File_Dirac()
:File__Analyze()
{
//In
Frame_Count_Valid=1;
//Count of a Packets
Frame_Count=0;
//Temp
Dirac_base_video_format((int8u)-1, frame_width, frame_height, chroma_format, source_sampling,
clean_width, clean_height, clean_left_offset, clean_top_offset,
frame_rate, pixel_aspect_ratio);
//Default stream values
Stream[0x00].Searching_Payload=true; //Sequence header
}
//---------------------------------------------------------------------------
// Packet "00"
void File_Dirac::Sequence_header()
{
Element_Name("Sequence header");
//Parsing
int32u version_major, version_minor, profile, level, base_video_format;
BS_Begin();
Get_UI(version_major, "version major");
Get_UI(version_minor, "version minor");
Get_UI(profile, "profile");
Get_UI(level, "level");
if (version_major<=2)
{
Get_UI(base_video_format, "base video format"); //Param_Info1(Dirac_base_video_format(base_video_format));
Dirac_base_video_format(base_video_format, frame_width, frame_height, chroma_format, source_sampling,
clean_width, clean_height, clean_left_offset, clean_top_offset,
frame_rate, pixel_aspect_ratio);
TEST_SB_SKIP( "custom dimensions flag");
Get_UI (frame_width, "frame width");
Get_UI (frame_height, "frame height");
TEST_SB_END();
TEST_SB_SKIP( "custom chroma format flag");
Get_UI (chroma_format, "chroma format"); Param_Info1(Dirac_chroma_format(chroma_format));
TEST_SB_END();
TEST_SB_SKIP( "custom scan format flag");
Get_UI (source_sampling, "source sampling"); Param_Info1(Dirac_source_sampling(source_sampling));
TEST_SB_END();
TEST_SB_SKIP( "frame rate flag");
int32u frame_rate_index;
Get_UI (frame_rate_index, "index"); Param_Info1(Dirac_frame_rate(frame_rate_index));
if (frame_rate_index==0)
{
int32u frame_rate_numer, frame_rate_denom;
Get_UI (frame_rate_numer, "frame rate numer");
Get_UI (frame_rate_denom, "frame rate denom");
frame_rate=((float32)frame_rate_numer)/((float32)frame_rate_denom);
}
else
frame_rate=Dirac_frame_rate(frame_rate_index);
TEST_SB_END();
TEST_SB_SKIP( "pixel aspect ratio flag");
int32u pixel_aspect_ratio_index;
Get_UI (pixel_aspect_ratio_index, "index"); Param_Info1(Dirac_pixel_aspect_ratio(pixel_aspect_ratio_index));
if (pixel_aspect_ratio_index==0)
{
int32u pixel_aspect_ratio_numer, pixel_aspect_ratio_denom;
Get_UI (pixel_aspect_ratio_numer, "pixel aspect ratio numer");
Get_UI (pixel_aspect_ratio_denom, "pixel aspect ratio denom");
pixel_aspect_ratio=((float32)pixel_aspect_ratio_numer)/((float32)pixel_aspect_ratio_denom);
}
else
pixel_aspect_ratio=Dirac_pixel_aspect_ratio(pixel_aspect_ratio_index);
TEST_SB_END();
TESTELSE_SB_SKIP( "custom clean area flag");
Get_UI (clean_width, "clean width");
Get_UI (clean_height, "clean height");
Get_UI (clean_left_offset, "clean left offset");
Get_UI (clean_top_offset, "clean top offset");
TESTELSE_SB_ELSE( "custom clean area flag");
clean_width=frame_width;
clean_height=frame_height;
TESTELSE_SB_END();
TEST_SB_SKIP( "custom signal range flag");
int32u custom_signal_range_index;
Get_UI(custom_signal_range_index, "index");
if (custom_signal_range_index==0)
{
Skip_UI( "luma offset");
Skip_UI( "luma excursion");
Skip_UI( "chroma offset");
Skip_UI( "chroma excursion");
}
TEST_SB_END();
TEST_SB_SKIP( "custom colour spec flag");
int32u custom_colour_spec_index;
Get_UI(custom_colour_spec_index, "index");
if (custom_colour_spec_index==0)
{
TEST_SB_SKIP( "custom colour primaries flag");
Skip_UI( "custom colour primaries index");
TEST_SB_END();
TEST_SB_SKIP( "colour matrix flag");
Skip_UI( "colour matrix index");
TEST_SB_END();
TEST_SB_SKIP( "custom transfer function flag");
Skip_UI( "custom transfer function index");
TEST_SB_END();
}
TEST_SB_END();
Info_UI(picture_coding_mode, "picture coding mode"); Param_Info1(Dirac_picture_coding_mode(picture_coding_mode));
}
else
{
Skip_XX(Element_Size-Element_Offset, "Unknown");
}
FILLING_BEGIN();
//Autorisation of other streams
Streams[0x10].Searching_Payload=true; //End_of_Sequence
Streams[0x20].Searching_Payload=true; //Auxiliary_data
Streams[0x30].Searching_Payload=true; //Padding_data
Streams[0x0C].Searching_Payload=true; //Intra_Reference_Picture
Streams[0x08].Searching_Payload=true; //Intra_Non_Reference_Picture
Streams[0x4C].Searching_Payload=true; //Intra_Reference_Picture_No
Streams[0x48].Searching_Payload=true; //Intra_Non_Reference_Picture_No
Streams[0x0D].Searching_Payload=true; //Inter_Reference_Picture_1
Streams[0x0E].Searching_Payload=true; //Inter_Reference_Picture_2
Streams[0x09].Searching_Payload=true; //Inter_Non_Reference_Picture_1
Streams[0x0A].Searching_Payload=true; //Inter_Non_Reference_Picture_2
Streams[0xCC].Searching_Payload=true; //Reference_Picture_Low
Streams[0xC8].Searching_Payload=true; //Intra_Non_Reference_Picture_Low
FILLING_END();
}
