mccenc.c File Reference

#include "avformat.h"
#include "internal.h"
#include "mux.h"
#include "libavcodec/codec_id.h"
#include "libavcodec/smpte_436m.h"
#include "libavutil/avassert.h"
#include "libavutil/avstring.h"
#include "libavutil/error.h"
#include "libavutil/ffversion.h"
#include "libavutil/log.h"
#include "libavutil/macros.h"
#include "libavutil/opt.h"
#include "libavutil/parseutils.h"
#include "libavutil/rational.h"
#include "libavutil/time_internal.h"
#include "libavutil/timecode.h"

Go to the source code of this file.

Data Structures
struct	MCCContext

Macros
#define	OFFSET(x)   offsetof(MCCContext, x)
#define	ENC   AV_OPT_FLAG_ENCODING_PARAM

Enumerations
enum	MCCVersion { MCC_VERSION_1 = 1, MCC_VERSION_2 = 2, MCC_VERSION_MIN = MCC_VERSION_1, MCC_VERSION_MAX = MCC_VERSION_2 }

Functions
static int	mcc_write_header (AVFormatContext *avf)
static void	mcc_bytes_to_hex (char *dest, const uint8_t *bytes, size_t bytes_size, int use_u_alias)
	convert the input bytes to hexadecimal with mcc's aliases More...
static int	mcc_write_packet (AVFormatContext *avf, AVPacket *pkt)
static int	mcc_init (AVFormatContext *avf)
static int	mcc_query_codec (enum AVCodecID codec_id, int std_compliance)

Variables
static const char	mcc_header_v1 []
static const char	mcc_header_v2 []
static const char	mcc_ffmpeg_uuid [] = "0087C4F6-A6B4-5469-8C8E-BBF44950401D"
	generated with the bash command: More...
static AVRational	valid_time_code_rates []
static const AVOption	options []
static const AVClass	mcc_muxer_class
const FFOutputFormat	ff_mcc_muxer

Macro Definition Documentation

OFFSET

#define OFFSET

(

x

)

offsetof(MCCContext, x)

Definition at line 503 of file mccenc.c.

ENC

#define ENC   AV_OPT_FLAG_ENCODING_PARAM

Definition at line 504 of file mccenc.c.

Enumeration Type Documentation

MCCVersion

enum MCCVersion

Enumerator
MCC_VERSION_1
MCC_VERSION_2
MCC_VERSION_MIN
MCC_VERSION_MAX

Definition at line 53 of file mccenc.c.

Function Documentation

mcc_write_header()

static int mcc_write_header ( AVFormatContext *  avf )

static

Definition at line 158 of file mccenc.c.

mcc_bytes_to_hex()

static void mcc_bytes_to_hex ( char *  dest, const uint8_t *  bytes, size_t  bytes_size, int  use_u_alias  )

static

convert the input bytes to hexadecimal with mcc's aliases

Definition at line 249 of file mccenc.c.

Referenced by mcc_write_packet().

mcc_write_packet()

static int mcc_write_packet ( AVFormatContext *  avf, AVPacket *  pkt  )

static

Definition at line 325 of file mccenc.c.

mcc_init()

static int mcc_init ( AVFormatContext *  avf )

static

Definition at line 420 of file mccenc.c.

mcc_query_codec()

static int mcc_query_codec ( enum AVCodecID  codec_id, int  std_compliance  )

static

Definition at line 495 of file mccenc.c.

Variable Documentation

mcc_header_v1

const char mcc_header_v1[]

static

Definition at line 61 of file mccenc.c.

Referenced by mcc_write_header().

mcc_header_v2

const char mcc_header_v2[]

static

Definition at line 100 of file mccenc.c.

Referenced by mcc_write_header().

mcc_ffmpeg_uuid

const char mcc_ffmpeg_uuid[] = "0087C4F6-A6B4-5469-8C8E-BBF44950401D"

static

generated with the bash command:

URL="https://code.ffmpeg.org/FFmpeg/FFmpeg/src/branch/master/libavformat/mccenc.c"
python3 -c "from uuid import *; print(str(uuid5(NAMESPACE_URL, '$URL')).upper())"

Definition at line 146 of file mccenc.c.

Referenced by mcc_write_header().

valid_time_code_rates

AVRational valid_time_code_rates[]

static

Initial value:

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

Definition at line 148 of file mccenc.c.

Referenced by mcc_init().

options

const AVOption options[]

static

Initial value:

= {
    { "override_time_code_rate", "override the `Time Code Rate` value in the output", OFFSET(override_time_code_rate), AV_OPT_TYPE_STRING, { .str = NULL }, 0, INT_MAX, ENC },
    { "use_u_alias", "use the U alias for E1h 00h 00h 00h, disabled by default because some .mcc files disagree on whether it has 2 or 3 zero bytes", OFFSET(use_u_alias), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, ENC },
    { "mcc_version", "the mcc file format version", OFFSET(mcc_version), AV_OPT_TYPE_UINT, { .i64 = MCC_VERSION_2 }, MCC_VERSION_MIN, MCC_VERSION_MAX, ENC },
    { "creation_program", "the creation program", OFFSET(creation_program), AV_OPT_TYPE_STRING, { .str = NULL }, 0, INT_MAX, ENC },
    { "creation_time", "the creation time", OFFSET(creation_time), AV_OPT_TYPE_STRING, { .str = "now" }, 0, INT_MAX, ENC },
    { NULL },
}

Definition at line 506 of file mccenc.c.

mcc_muxer_class

const AVClass mcc_muxer_class

static

Initial value:

= {
    .class_name = "mcc muxer",
    .item_name  = av_default_item_name,
    .option     = options,
    .version    = LIBAVUTIL_VERSION_INT,
}

Definition at line 516 of file mccenc.c.

ff_mcc_muxer

const FFOutputFormat ff_mcc_muxer

Initial value:

= {
    .p.name           = "mcc",
    .p.long_name      = NULL_IF_CONFIG_SMALL("MacCaption"),
    .p.extensions     = "mcc",
    .p.flags          = AVFMT_GLOBALHEADER,
    .p.video_codec    = AV_CODEC_ID_NONE,
    .p.audio_codec    = AV_CODEC_ID_NONE,
    .p.subtitle_codec = AV_CODEC_ID_EIA_608,
    .p.priv_class     = &mcc_muxer_class,
    .priv_data_size   = sizeof(MCCContext),
    .init             = mcc_init,
    .query_codec      = mcc_query_codec,
    .write_header     = mcc_write_header,
    .write_packet     = mcc_write_packet,
}

Definition at line 523 of file mccenc.c.