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

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().

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.

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 cvt_char().

chartab_original

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

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

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

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(), main(), 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

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 hamm24().

hamm24val

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

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

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

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().