mccdec.c File Reference

#include "avformat.h"
#include "demux.h"
#include "internal.h"
#include "libavcodec/bytestream.h"
#include "libavcodec/codec_id.h"
#include "libavcodec/smpte_436m.h"
#include "libavutil/attributes_internal.h"
#include "libavutil/avstring.h"
#include "libavutil/avutil.h"
#include "libavutil/error.h"
#include "libavutil/internal.h"
#include "libavutil/log.h"
#include "libavutil/macros.h"
#include "libavutil/opt.h"
#include "libavutil/rational.h"
#include "libavutil/timecode.h"
#include "subtitles.h"
#include <inttypes.h>
#include <stdbool.h>
#include <string.h>

Go to the source code of this file.

Data Structures
struct	MCCContext
struct	alias
struct	TimeTracker
struct	MCCTimecode
struct	ValidTimeCodeRate

Macros
#define	CCPAD   "\xFA\x0\x0"
#define	CCPAD3   CCPAD CCPAD CCPAD
#define	OFFSET(x)
#define	SD   AV_OPT_FLAG_SUBTITLE_PARAM | AV_OPT_FLAG_DECODING_PARAM

Functions
static int	mcc_probe (const AVProbeData *p)
static int	convert (uint8_t x)
static int	time_tracker_init (TimeTracker *tt, AVStream *st, AVRational rate, void *log_ctx)
static int	time_tracker_set_time (TimeTracker *tt, const MCCTimecode *tc, void *log_ctx)
static int	parse_time_code_rate (AVFormatContext *s, AVStream *st, TimeTracker *tt, const char *time_code_rate)
static int	mcc_parse_time_code_part (char **line_left, unsigned *value, unsigned max, const char *after_set)
static int	mcc_parse_time_code (char **line_left, MCCTimecode *tc)
static int	mcc_read_header (AVFormatContext *s)
static int	mcc_read_packet (AVFormatContext *s, AVPacket *pkt)
static int	mcc_read_seek (AVFormatContext *s, int stream_index, int64_t min_ts, int64_t ts, int64_t max_ts, int flags)
static int	mcc_read_close (AVFormatContext *s)

Variables
static attribute_nonstring const char	cc_pad [27] = CCPAD3 CCPAD3 CCPAD3
static const alias	aliases [20]
static const struct ValidTimeCodeRate	valid_time_code_rates []
static const AVOption	mcc_options []
static const AVClass	mcc_class
const FFInputFormat	ff_mcc_demuxer

Macro Definition Documentation

CCPAD

#define CCPAD   "\xFA\x0\x0"

Definition at line 85 of file mccdec.c.

CCPAD3

#define CCPAD3   CCPAD CCPAD CCPAD

Definition at line 86 of file mccdec.c.

OFFSET

#define OFFSET

(

x

)

Value:

offsetof(MCCContext, x)

Definition at line 399 of file mccdec.c.

SD

#define SD   AV_OPT_FLAG_SUBTITLE_PARAM | AV_OPT_FLAG_DECODING_PARAM

Definition at line 400 of file mccdec.c.

Function Documentation

mcc_probe()

static int mcc_probe ( const AVProbeData * p )

static

Definition at line 50 of file mccdec.c.

convert()

static int convert ( uint8_t x )

static

Definition at line 68 of file mccdec.c.

Referenced by mcc_read_header().

time_tracker_init()

static int time_tracker_init ( TimeTracker * tt, AVStream * st, AVRational rate, void * log_ctx )

static

Definition at line 121 of file mccdec.c.

Referenced by mcc_read_header(), and parse_time_code_rate().

time_tracker_set_time()

static int time_tracker_set_time ( TimeTracker * tt, const MCCTimecode * tc, void * log_ctx )

static

Definition at line 142 of file mccdec.c.

Referenced by mcc_read_header().

parse_time_code_rate()

static int parse_time_code_rate ( AVFormatContext * s, AVStream * st, TimeTracker * tt, const char * time_code_rate )

static

Definition at line 172 of file mccdec.c.

Referenced by mcc_read_header().

mcc_parse_time_code_part()

static int mcc_parse_time_code_part ( char ** line_left, unsigned * value, unsigned max, const char * after_set )

static

Definition at line 193 of file mccdec.c.

Referenced by mcc_parse_time_code().

mcc_parse_time_code()

static int mcc_parse_time_code ( char ** line_left, MCCTimecode * tc )

static

Definition at line 212 of file mccdec.c.

Referenced by mcc_read_header().

mcc_read_header()

static int mcc_read_header ( AVFormatContext * s )

static

Definition at line 242 of file mccdec.c.

mcc_read_packet()

static int mcc_read_packet ( AVFormatContext * s, AVPacket * pkt )

static

Definition at line 380 of file mccdec.c.

mcc_read_seek()

static int mcc_read_seek ( AVFormatContext * s, int stream_index, int64_t min_ts, int64_t ts, int64_t max_ts, int flags )

static

Definition at line 386 of file mccdec.c.

mcc_read_close()

static int mcc_read_close ( AVFormatContext * s )

static

Definition at line 392 of file mccdec.c.

Variable Documentation

cc_pad

attribute_nonstring const char cc_pad[27] = CCPAD3 CCPAD3 CCPAD3

static

Definition at line 88 of file mccdec.c.

aliases

const alias aliases[20]

static

Initial value:

= {
    
    { .key = 16, .len =  3, .value = cc_pad, },
    { .key = 17, .len =  6, .value = cc_pad, },
    { .key = 18, .len =  9, .value = cc_pad, },
    { .key = 19, .len = 12, .value = cc_pad, },
    { .key = 20, .len = 15, .value = cc_pad, },
    { .key = 21, .len = 18, .value = cc_pad, },
    { .key = 22, .len = 21, .value = cc_pad, },
    { .key = 23, .len = 24, .value = cc_pad, },
    { .key = 24, .len = 27, .value = cc_pad, },
    { .key = 25, .len =  3, .value = "\xFB\x80\x80", },
    { .key = 26, .len =  3, .value = "\xFC\x80\x80", },
    { .key = 27, .len =  3, .value = "\xFD\x80\x80", },
    { .key = 28, .len =  2, .value = "\x96\x69", },
    { .key = 29, .len =  2, .value = "\x61\x01", },
    { .key = 30, .len =  3, .value = "\xFC\x80\x80", },
    { .key = 31, .len =  3, .value = "\xFC\x80\x80", },
    { .key = 32, .len =  4, .value = "\xE1\x00\x00\x00", },
    { .key = 33, .len =  0, .value = NULL, },
    { .key = 34, .len =  0, .value = NULL, },
    { .key = 35, .len =  1, .value = "\x0", },
    
}

Definition at line 90 of file mccdec.c.

Referenced by mcc_read_header().

valid_time_code_rates

const struct ValidTimeCodeRate valid_time_code_rates[]

static

Initial value:

= {
    { .rate = { .num = 24, .den = 1 },       .str = "24"   },
    { .rate = { .num = 25, .den = 1 },       .str = "25"   },
    { .rate = { .num = 30000, .den = 1001 }, .str = "30DF" },
    { .rate = { .num = 30, .den = 1 },       .str = "30"   },
    { .rate = { .num = 50, .den = 1 },       .str = "50"   },
    { .rate = { .num = 60000, .den = 1001 }, .str = "60DF" },
    { .rate = { .num = 60, .den = 1 },       .str = "60"   },
}

Definition at line 162 of file mccdec.c.

Referenced by mcc_init(), and parse_time_code_rate().

mcc_options

const AVOption mcc_options[]

static

Initial value:

= {
    { "eia608_extract", "extract EIA-608/708 captions from VANC packets", OFFSET(eia608_extract), AV_OPT_TYPE_BOOL, {.i64 = 1}, 0, 1, SD },
    { NULL },
}

Definition at line 402 of file mccdec.c.

mcc_class

const AVClass mcc_class

static

Initial value:

= {
    .class_name = "mcc demuxer",
    .item_name  = av_default_item_name,
    .option     = mcc_options,
    .version    = LIBAVUTIL_VERSION_INT,
    .category   = AV_CLASS_CATEGORY_DEMUXER,
}

Definition at line 408 of file mccdec.c.

ff_mcc_demuxer

const FFInputFormat ff_mcc_demuxer

Initial value:

= {
    .p.name         = "mcc",
    .p.long_name    = NULL_IF_CONFIG_SMALL("MacCaption"),
    .p.extensions   = "mcc",
    .p.priv_class   = &mcc_class,
    .priv_data_size = sizeof(MCCContext),
    .flags_internal = FF_INFMT_FLAG_INIT_CLEANUP,
    .read_probe     = mcc_probe,
    .read_header    = mcc_read_header,
    .read_packet    = mcc_read_packet,
    .read_seek2     = mcc_read_seek,
    .read_close     = mcc_read_close,
}

Definition at line 416 of file mccdec.c.