vbilut.h File Reference

#include <array>
#include <cstdint>
#include <string>

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Enumerations
enum	vbimode : std::uint8_t { VBI_IVTV , VBI_DVB , VBI_DVB_SUBTITLE }

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...

Enumeration Type Documentation

vbimode

enum vbimode : std::uint8_t

Enumerator
VBI_IVTV
VBI_DVB	< IVTV packet
VBI_DVB_SUBTITLE	< DVB packet < DVB subtitle packet

Definition at line 21 of file vbilut.h.

Function Documentation

hamm16()

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

Definition at line 343 of file vbilut.cpp.

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

hamm24()

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

Definition at line 352 of file vbilut.cpp.

hamm8()

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

Definition at line 326 of file vbilut.cpp.

Referenced by TeletextReader::AddTeletextData().

hamm84()

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

Definition at line 333 of file vbilut.cpp.

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

Variable Documentation

chartab_original

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

extern

Definition at line 45 of file vbilut.cpp.

formats

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

extern

Definition at line 188 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(), main(), MythVideoFrame::MythVideoFrame(), MythWindowVulkan::MythWindowVulkan(), CoreAudioData::OpenSPDIF(), MythRAOPConnection::ProcessRequest(), VideoBuffers::ReinitBuffer(), CoreAudioData::ResetStream(), ImageAdapterBase::SupportedImages(), and ImageAdapterBase::SupportedVideos().

hamm24cor

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

extern

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

Definition at line 314 of file vbilut.cpp.

Referenced by hamm24().

hamm24err

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

extern

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 298 of file vbilut.cpp.

Referenced by hamm24().

hamm24par

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

extern

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 212 of file vbilut.cpp.

Referenced by hamm24().

hamm24val

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

extern

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

Definition at line 272 of file vbilut.cpp.

Referenced by hamm24().

hamm84tab

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

extern

Definition at line 86 of file vbilut.cpp.

Referenced by hamm84().

hammtab

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

extern

Definition at line 50 of file vbilut.cpp.

Referenced by hamm16(), and hamm8().

lang_chars

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

extern

Definition at line 3 of file vbilut.cpp.

Referenced by cvt_char().

subtitles

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

extern

Definition at line 200 of file vbilut.cpp.

Referenced by CC608Decoder::DecodeWSS().

unham84tab

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

extern

Definition at line 116 of file vbilut.cpp.

vbi_bit_reverse

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

extern

Definition at line 152 of file vbilut.cpp.

Referenced by CC608Decoder::DecodeVPS().