#include <cstdio>
#include <cstdlib>
#include "mythlogging.h"
#include "captions/cc708reader.h"
#include "captions/cc708decoder.h"

Include dependency graph for cc708decoder.cpp:

Go to the source code of this file.

Macros
#define	LOC QString("CC708: ")

#define	DEBUG_CAPTIONS 0

#define	DEBUG_CC_SERVICE 0

#define	DEBUG_CC_SERVICE_2 0

#define	DEBUG_CC_RAWPACKET 0

#define	DEBUG_CC_VALIDPACKET 0

#define	DEBUG_CC_DECODE 0

#define	DEBUG_CC_PARSE 0

#define	SEND_STR

Enumerations
enum	kCCTypes { NTSC_CC_f1 = 0, NTSC_CC_f2 = 1, DTVCC_PACKET_DATA = 2, DTVCC_PACKET_START = 3 }

enum	C0 { NUL = 0x00, ETX = 0x03, BS = 0x08, FF = 0x0C, CR = 0x0D, HCR = 0x0E, EXT1 = 0x10, P16 = 0x18 }

enum	C1 { CW0 =0x80, CW1, CW2, CW3, CW4, CW5, CW6, CW7, CLW, DSW, HDW, TGW, DLW, DLY, DLC, RST, SPA =0x90, SPC, SPL, SWA =0x97, DF0, DF1, DF2, DF3, DF4, DF5, DF6, DF7 }

Functions
static void	parse_cc_packet (CC708Reader cb_cbs, CaptionPacket pkt, time_t last_seen[64])

static void	append_character (CC708Reader *cc, uint service_num, short ch)

static void	parse_cc_service_stream (CC708Reader *cc, uint service_num)

static int	handle_cc_c0_ext1_p16 (CC708Reader *cc, uint service_num, int i)

static int	handle_cc_c1 (CC708Reader *cc, uint service_num, int i)

static int	handle_cc_c2 (CC708Reader *cc, uint service_num, int i)

static int	handle_cc_c3 (CC708Reader *cc, uint service_num, int i)

static bool	rightsize_buf (CC708Reader *cc, uint service_num, uint block_size)

static void	append_cc (CC708Reader cc, uint service_num, const unsigned char blk_buf, int block_size)

Variables
const char *	cc_types [4]

ushort	CCtableG0 [0x60]

ushort	CCtableG1 [0x60]

ushort	CCtableG2 [0x60]

ushort	CCtableG3 [0x60]

Macro Definition Documentation

◆ LOC

#define LOC QString("CC708: ")

Definition at line 11 of file cc708decoder.cpp.

◆ DEBUG_CAPTIONS

#define DEBUG_CAPTIONS 0

Definition at line 13 of file cc708decoder.cpp.

◆ DEBUG_CC_SERVICE

#define DEBUG_CC_SERVICE 0

Definition at line 14 of file cc708decoder.cpp.

◆ DEBUG_CC_SERVICE_2

#define DEBUG_CC_SERVICE_2 0

Definition at line 15 of file cc708decoder.cpp.

◆ DEBUG_CC_RAWPACKET

#define DEBUG_CC_RAWPACKET 0

Definition at line 16 of file cc708decoder.cpp.

◆ DEBUG_CC_VALIDPACKET

#define DEBUG_CC_VALIDPACKET 0

Definition at line 17 of file cc708decoder.cpp.

◆ DEBUG_CC_DECODE

#define DEBUG_CC_DECODE 0

Definition at line 18 of file cc708decoder.cpp.

◆ DEBUG_CC_PARSE

#define DEBUG_CC_PARSE 0

Definition at line 19 of file cc708decoder.cpp.

◆ SEND_STR

#define SEND_STR

Value:

do { \
    if (cc->m_tempStrSize[service_num]) \
    { \
        cc->TextWrite(service_num, \
                      cc->m_tempStr[service_num], \
                      cc->m_tempStrSize[service_num]); \
        cc->m_tempStrSize[service_num] = 0; \
    } \
} while (false)

Definition at line 118 of file cc708decoder.cpp.

Enumeration Type Documentation

◆ kCCTypes

enum kCCTypes

Enumerator
NTSC_CC_f1
NTSC_CC_f2
DTVCC_PACKET_DATA
DTVCC_PACKET_START

Definition at line 21 of file cc708decoder.cpp.

◆ C0

enum C0

Enumerator
NUL
ETX
BS
FF
CR
HCR
EXT1
P16

Definition at line 86 of file cc708decoder.cpp.

◆ C1

enum C1

Enumerator
CW0
CW1
CW2
CW3
CW4
CW5
CW6
CW7
CLW
DSW
HDW
TGW
DLW
DLY
DLC
RST
SPA
SPC
SPL
SWA
DF0
DF1
DF2
DF3
DF4
DF5
DF6
DF7

Definition at line 98 of file cc708decoder.cpp.

Function Documentation

◆ parse_cc_packet()

static void parse_cc_packet	(	CC708Reader *	cb_cbs,
		CaptionPacket *	pkt,
		time_t	last_seen[64]
	)

static

Definition at line 621 of file cc708decoder.cpp.

Referenced by CC708Decoder::decode_cc_data(), and CC708Decoder::decode_cc_null().

◆ append_character()

static void append_character	(	CC708Reader *	cc,
		uint	service_num,
		short	ch
	)

static

Definition at line 706 of file cc708decoder.cpp.

Referenced by handle_cc_c0_ext1_p16(), and parse_cc_service_stream().

◆ parse_cc_service_stream()

static void parse_cc_service_stream	(	CC708Reader *	cc,
		uint	service_num
	)

static

Definition at line 129 of file cc708decoder.cpp.

Referenced by append_cc().

◆ handle_cc_c0_ext1_p16()

static int handle_cc_c0_ext1_p16	(	CC708Reader *	cc,
		uint	service_num,
		int	i
	)

static

Definition at line 305 of file cc708decoder.cpp.

Referenced by parse_cc_service_stream().

◆ handle_cc_c1()

static int handle_cc_c1	(	CC708Reader *	cc,
		uint	service_num,
		int	i
	)

static

Definition at line 369 of file cc708decoder.cpp.

Referenced by parse_cc_service_stream().

◆ handle_cc_c2()

static int handle_cc_c2	(	CC708Reader *	cc,
		uint	service_num,
		int	i
	)

static

Definition at line 505 of file cc708decoder.cpp.

Referenced by handle_cc_c0_ext1_p16().

◆ handle_cc_c3()

static int handle_cc_c3	(	CC708Reader *	cc,
		uint	service_num,
		int	i
	)

static

Definition at line 532 of file cc708decoder.cpp.

Referenced by handle_cc_c0_ext1_p16().

◆ rightsize_buf()

static bool rightsize_buf	(	CC708Reader *	cc,
		uint	service_num,
		uint	block_size
	)

static

Definition at line 560 of file cc708decoder.cpp.

Referenced by append_cc().

◆ append_cc()

static void append_cc	(	CC708Reader *	cc,
		uint	service_num,
		const unsigned char *	blk_buf,
		int	block_size
	)

static

Definition at line 596 of file cc708decoder.cpp.

Referenced by parse_cc_packet().

Variable Documentation

◆ cc_types

const char* cc_types[4]

Initial value:

=
{
    "NTSC line 21 field 1 closed captions"
    "NTSC line 21 field 2 closed captions"
    "DTVCC Channel Packet Data"
    "DTVCC Channel Packet Start"
}

Definition at line 29 of file cc708decoder.cpp.

◆ CCtableG0

ushort CCtableG0

Initial value:

=
{
    ' ', '!','\"', '#',    '$', '%', '&', '\'', 
    '(', ')', '*', '+',    ',', '-', '.', '/',  
    '0', '1', '2', '3',    '4', '5', '6', '7',  
    '8', '9', ':', ';',    '<', '=', '>', '?',  
    '@', 'A', 'B', 'C',    'D', 'E', 'F', 'G',  
    'H', 'I', 'J', 'K',    'L', 'M', 'N', 'O',  
    'P', 'Q', 'R', 'S',    'T', 'U', 'V', 'W',  
    'X', 'Y', 'Z', '[',    '\\',']', '^', '_',  
    '`', 'a', 'b', 'c',    'd', 'e', 'f', 'g',  
    'h', 'i', 'j', 'k',    'l', 'm', 'n', 'o',  
    'p', 'q', 'r', 's',    't', 'u', 'v', 'w',  
    'x', 'y', 'z', '{',    '|', '}', '~',  0x266a, 
}

Definition at line 732 of file cc708decoder.cpp.

Referenced by parse_cc_service_stream().

◆ CCtableG1

ushort CCtableG1

Definition at line 752 of file cc708decoder.cpp.

Referenced by parse_cc_service_stream().

◆ CCtableG2

ushort CCtableG2

Definition at line 787 of file cc708decoder.cpp.

Referenced by handle_cc_c0_ext1_p16().

◆ CCtableG3

ushort CCtableG3

Initial value:

=
{
    '#', 
       0, 0, 0,   0, 0, 0, 0,    0, 0, 0, 0,   0, 0, 0, 0, 
    0, 0, 0, 0,   0, 0, 0, 0,    0, 0, 0, 0,   0, 0, 0, 0, 
    0, 0, 0, 0,   0, 0, 0, 0,    0, 0, 0, 0,   0, 0, 0, 0, 
    0, 0, 0, 0,   0, 0, 0, 0,    0, 0, 0, 0,   0, 0, 0, 0, 
    0, 0, 0, 0,   0, 0, 0, 0,    0, 0, 0, 0,   0, 0, 0, 0, 
    0, 0, 0, 0,   0, 0, 0, 0,    0, 0, 0, 0,   0, 0, 0, 0, 
}

Definition at line 836 of file cc708decoder.cpp.

Referenced by handle_cc_c0_ext1_p16().

Enumerator
CW0
CW1
CW2
CW3
CW4
CW5
CW6
CW7
CLW
DSW
HDW
TGW
DLW
DLY
DLC
RST
SPA
SPC
SPL
SWA
DF0
DF1
DF2
DF3
DF4
DF5
DF6
DF7

Enumerator
CW0
CW1
CW2
CW3
CW4
CW5
CW6
CW7
CLW
DSW
HDW
TGW
DLW
DLY
DLC
RST
SPA
SPC
SPL
SWA
DF0
DF1
DF2
DF3
DF4
DF5
DF6
DF7

Macros

Enumerations

Functions

Variables

Macro Definition Documentation

◆ LOC

◆ DEBUG_CAPTIONS

◆ DEBUG_CC_SERVICE

◆ DEBUG_CC_SERVICE_2

◆ DEBUG_CC_RAWPACKET

◆ DEBUG_CC_VALIDPACKET

◆ DEBUG_CC_DECODE

◆ DEBUG_CC_PARSE

◆ SEND_STR

Enumeration Type Documentation

◆ kCCTypes

◆ C0

◆ C1

Function Documentation

◆ parse_cc_packet()

◆ append_character()

◆ parse_cc_service_stream()

◆ handle_cc_c0_ext1_p16()

◆ handle_cc_c1()

◆ handle_cc_c2()

◆ handle_cc_c3()

◆ rightsize_buf()

◆ append_cc()

Variable Documentation

◆ cc_types

◆ CCtableG0

◆ CCtableG1

◆ CCtableG2

◆ CCtableG3

Enumerator
CW0
CW1
CW2
CW3
CW4
CW5
CW6
CW7
CLW
DSW
HDW
TGW
DLW
DLY
DLC
RST
SPA
SPC
SPL
SWA
DF0
DF1
DF2
DF3
DF4
DF5
DF6
DF7