#include "captions/vbilut.h"

Include dependency graph for vbilut.cpp:

Functions
int	hamm8 (const uint8_t p, int err)

int	hamm84 (const uint8_t p, int err)

int	hamm16 (const uint8_t p, int err)

int	hamm24 (const uint8_t p, int err)

Variables
const std::array< const std::array< const uint8_t, 16 >, 1+8+8 >	lang_chars

const std::array< const uint8_t, 13 >	chartab_original

const std::array< const uint16_t, 256 >	hammtab

const std::array< const uint8_t, 256 >	hamm84tab

const std::array< const uint8_t, 256 >	unham84tab

const std::array< const uint8_t, 256 >	vbi_bit_reverse

const std::array< const std::string, 8 >	formats

const std::array< const std::string, 4 >	subtitles

const std::array< const std::array< const uint8_t, 256 >, 3 >	hamm24par
	This table generates the parity checks for hamm24/18 decoding. More...

const std::array< const uint8_t, 256 >	hamm24val
	Table to extract the lower 4 bit from hamm24/18 encoded bytes. More...

const std::array< const uint16_t, 64 >	hamm24err
	Mapping from parity checks made by table hamm24par to error results return by hamm24. More...

const std::array< const int32_t, 64 >	hamm24cor
	Mapping from parity checks made by table hamm24par to faulty bit in the decoded 18 bit word. More...

Function Documentation

◆ hamm8()

int hamm8	(	const uint8_t *	p,
		int *	err
	)

Definition at line 326 of file vbilut.cpp.

Referenced by TeletextReader::AddTeletextData(), and vt_line().

◆ hamm84()

int hamm84	(	const uint8_t *	p,
		int *	err
	)

Definition at line 333 of file vbilut.cpp.

Referenced by TeletextReader::AddTeletextData(), and TeletextDecoder::Decode().

◆ hamm16()

int hamm16	(	const uint8_t *	p,
		int *	err
	)

Definition at line 343 of file vbilut.cpp.

Referenced by TeletextReader::AddTeletextData(), TeletextDecoder::Decode(), and vt_line().

◆ hamm24()

int hamm24	(	const uint8_t *	p,
		int *	err
	)

Definition at line 352 of file vbilut.cpp.

Referenced by vt_line().

Variable Documentation

◆ lang_chars

const std::array<const std::array<const uint8_t,16>,1+8+8> lang_chars

Definition at line 4 of file vbilut.cpp.

Referenced by conv2latin(), cvt_char(), and lang_init().

◆ chartab_original

const std::array<const uint8_t,13> chartab_original

Initial value:

=
{
  0x23,0xa4,0x40,0x5b,0x5c,0x5d,0x5e,0x5f,0x27,0x7b,0x7c,0x7d,0x7e 
}

Definition at line 45 of file vbilut.cpp.

◆ hammtab

const std::array<const uint16_t,256> hammtab

Definition at line 51 of file vbilut.cpp.

Referenced by hamm16(), and hamm8().

◆ hamm84tab

const std::array<const uint8_t,256> hamm84tab

Initial value:

{
    255,255,255,255,255,255,255,255,255,  0, 
    255,  8,255,255,255,255,255,255,255,255, 
    255,255,255,255,255,255,255,255,  6,255, 
     14,255,255,255,255,255, 12,255,  4,255, 
    255,255,255,255,255,255,255,255,255, 10, 
    255,  2,255,255,255,255,255,255,255,255, 
    255,255,255,255,  1,255,  9,255,255,255, 
    255,255,255,255,255,255,255,255,255,255, 
    255,255,255,255,255,  7,255, 15,255,255, 
    255,255,255,255,255,255,255,255,255,255, 
    255,255,255,255,255,255,255,255,255, 13, 
    255,  5,255,255,255,255,255,255,255,255, 
     11,255,  3,255,255,255,255,255,255,255, 
    255,255,255, 12,255,  4,255,255,255,255, 
    255,255,255,255, 10,255,  2,255,255,255, 
    255,255,255,255,255,255,255,255,255,255, 
    255,255,255,255,255,255,255,255,  0,255, 
      8,255,255,255,255,255,255,255,255,255, 
    255,255,255,255,255,255,255,255,255,  6, 
    255, 14,255,255,255,255,255,255,255,255, 
    255,255,255,255, 13,255,  5,255,255,255, 
    255,255,255,255,255,255,255, 11,255,  3, 
    255,255,255,255,255,  1,255,  9,255,255, 
    255,255,255,255,255,255,255,255,255,255, 
    255,255,255,255,  7,255, 15,255,255,255, 
    255,255,255,255,255,255 }

Definition at line 87 of file vbilut.cpp.

Referenced by hamm84().

◆ unham84tab

const std::array<const uint8_t,256> unham84tab

Definition at line 117 of file vbilut.cpp.

◆ vbi_bit_reverse

const std::array<const uint8_t,256> vbi_bit_reverse

Definition at line 153 of file vbilut.cpp.

Referenced by CC608Decoder::DecodeVPS().

◆ formats

const std::array<const std::string, 8> formats

Initial value:

{
    "Full format 4:3, 576 lines",
    "Letterbox 14:9 centre, 504 lines",
    "Letterbox 14:9 top, 504 lines",
    "Letterbox 16:9 centre, 430 lines",
    "Letterbox 16:9 top, 430 lines",
    "Letterbox > 16:9 centre",
    "Full format 14:9 centre, 576 lines",
    "Anamorphic 16:9, 576 lines"
}

Definition at line 189 of file vbilut.cpp.

Referenced by CoreAudioData::ChannelsList(), CC608Decoder::DecodeWSS(), MythUIText::DrawSelf(), MythPainter::DrawTextLayout(), CoreAudioData::FindAC3Stream(), MythDRMPlane::FormatsToString(), MythUIText::FormatTemplate(), V4L2util::GetFormats(), MythPainter::GetImageFromTextLayout(), AudioOutputOSS::GetOutputSettings(), MythUIFileBrowser::IsImage(), MythVideoFrame::MythVideoFrame(), MythWindowVulkan::MythWindowVulkan(), CoreAudioData::OpenSPDIF(), MythRAOPConnection::ProcessRequest(), VideoBuffers::ReinitBuffer(), CoreAudioData::ResetStream(), ImageAdapterBase::SupportedImages(), and ImageAdapterBase::SupportedVideos().

◆ subtitles

const std::array<const std::string,4> subtitles

Initial value:

{
    "none",
    "in active image area",
    "out of active image area",
    "?"
}

Definition at line 201 of file vbilut.cpp.

Referenced by EITHelper::AddEIT(), and CC608Decoder::DecodeWSS().

◆ hamm24par

const std::array<const std::array<const uint8_t,256>,3> hamm24par

This table generates the parity checks for hamm24/18 decoding.

bit 0 is for test A, 1 for B, ... thanks to R. Gancarz for this fine table g

Definition at line 213 of file vbilut.cpp.

Referenced by chk_parity(), and hamm24().

◆ hamm24val

const std::array<const uint8_t,256> hamm24val

Initial value:

{
      0,  0,  0,  0,  1,  1,  1,  1,  0,  0,  0,  0,  1,  1,  1,  1,
      2,  2,  2,  2,  3,  3,  3,  3,  2,  2,  2,  2,  3,  3,  3,  3,
      4,  4,  4,  4,  5,  5,  5,  5,  4,  4,  4,  4,  5,  5,  5,  5,
      6,  6,  6,  6,  7,  7,  7,  7,  6,  6,  6,  6,  7,  7,  7,  7,
      8,  8,  8,  8,  9,  9,  9,  9,  8,  8,  8,  8,  9,  9,  9,  9,
     10, 10, 10, 10, 11, 11, 11, 11, 10, 10, 10, 10, 11, 11, 11, 11,
     12, 12, 12, 12, 13, 13, 13, 13, 12, 12, 12, 12, 13, 13, 13, 13,
     14, 14, 14, 14, 15, 15, 15, 15, 14, 14, 14, 14, 15, 15, 15, 15,
      0,  0,  0,  0,  1,  1,  1,  1,  0,  0,  0,  0,  1,  1,  1,  1,
      2,  2,  2,  2,  3,  3,  3,  3,  2,  2,  2,  2,  3,  3,  3,  3,
      4,  4,  4,  4,  5,  5,  5,  5,  4,  4,  4,  4,  5,  5,  5,  5,
      6,  6,  6,  6,  7,  7,  7,  7,  6,  6,  6,  6,  7,  7,  7,  7,
      8,  8,  8,  8,  9,  9,  9,  9,  8,  8,  8,  8,  9,  9,  9,  9,
     10, 10, 10, 10, 11, 11, 11, 11, 10, 10, 10, 10, 11, 11, 11, 11,
     12, 12, 12, 12, 13, 13, 13, 13, 12, 12, 12, 12, 13, 13, 13, 13,
     14, 14, 14, 14, 15, 15, 15, 15, 14, 14, 14, 14, 15, 15, 15, 15
}

Table to extract the lower 4 bit from hamm24/18 encoded bytes.

Definition at line 273 of file vbilut.cpp.

Referenced by hamm24().

◆ hamm24err

const std::array<const uint16_t, 64> hamm24err

Initial value:

{
    0x0000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000,
    0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000,
    0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000,
    0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000,
    0x0100, 0x0100, 0x0100, 0x0100, 0x0100, 0x0100, 0x0100, 0x0100,
    0x0100, 0x0100, 0x0100, 0x0100, 0x0100, 0x0100, 0x0100, 0x0100,
    0x0100, 0x0100, 0x0100, 0x0100, 0x0100, 0x0100, 0x0100, 0x0100,
    0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000, 0x1000,
}

Mapping from parity checks made by table hamm24par to error results return by hamm24.

(0 = no error, 0x0100 = single bit error, 0x1000 = double error)

Definition at line 299 of file vbilut.cpp.

Referenced by hamm24().

◆ hamm24cor

const std::array<const int32_t, 64> hamm24cor

Initial value:

{
    0x00000, 0x00000, 0x00000, 0x00000, 0x00000, 0x00000, 0x00000, 0x00000,
    0x00000, 0x00000, 0x00000, 0x00000, 0x00000, 0x00000, 0x00000, 0x00000,
    0x00000, 0x00000, 0x00000, 0x00000, 0x00000, 0x00000, 0x00000, 0x00000,
    0x00000, 0x00000, 0x00000, 0x00000, 0x00000, 0x00000, 0x00000, 0x00000,
    0x00000, 0x00000, 0x00000, 0x00001, 0x00000, 0x00002, 0x00004, 0x00008,
    0x00000, 0x00010, 0x00020, 0x00040, 0x00080, 0x00100, 0x00200, 0x00400,
    0x00000, 0x00800, 0x01000, 0x02000, 0x04000, 0x08000, 0x10000, 0x20000,
    0x00000, 0x00000, 0x00000, 0x00000, 0x00000, 0x00000, 0x00000, 0x00000,
}

Mapping from parity checks made by table hamm24par to faulty bit in the decoded 18 bit word.

Definition at line 315 of file vbilut.cpp.

Referenced by hamm24().

Functions

Variables

Function Documentation

◆ hamm8()

◆ hamm84()

◆ hamm16()

◆ hamm24()

Variable Documentation

◆ lang_chars

◆ chartab_original

◆ hammtab

◆ hamm84tab

◆ unham84tab

◆ vbi_bit_reverse

◆ formats

◆ subtitles

◆ hamm24par

◆ hamm24val

◆ hamm24err

◆ hamm24cor