ttmlenc.c File Reference

TTML subtitle encoder. More...

#include "avcodec.h"
#include "codec_internal.h"
#include "libavutil/bprint.h"
#include "libavutil/internal.h"
#include "libavutil/mem.h"
#include "ass_split.h"
#include "ttmlenc.h"

Go to the source code of this file.

Data Structures
struct	TTMLContext

Functions
static void	ttml_text_cb (void *priv, const char *text, int len)
static void	ttml_new_line_cb (void *priv, int forced)
static int	ttml_encode_frame (AVCodecContext *avctx, uint8_t *buf, int bufsize, const AVSubtitle *sub)
static av_cold int	ttml_encode_close (AVCodecContext *avctx)
static const char *	ttml_get_display_alignment (int alignment)
static const char *	ttml_get_text_alignment (int alignment)
static void	ttml_get_origin (ASSScriptInfo script_info, ASSStyle style, int *origin_left, int *origin_top)
static void	ttml_get_extent (ASSScriptInfo script_info, ASSStyle style, int *width, int *height)
static int	ttml_write_region (AVCodecContext *avctx, AVBPrint *buf, ASSScriptInfo script_info, ASSStyle style)
static int	ttml_write_header_content (AVCodecContext *avctx)
static av_cold int	ttml_encode_init (AVCodecContext *avctx)

Variables
static const ASSCodesCallbacks	ttml_callbacks
const FFCodec	ff_ttml_encoder

Detailed Description

TTML subtitle encoder.

See also

https://www.w3.org/TR/ttml1/

https://www.w3.org/TR/ttml2/

https://www.w3.org/TR/ttml-imsc/rec

Definition in file ttmlenc.c.

Function Documentation

ttml_text_cb()

static void ttml_text_cb ( void * priv, const char * text, int len )

static

Definition at line 44 of file ttmlenc.c.

ttml_new_line_cb()

static void ttml_new_line_cb ( void * priv, int forced )

static

Definition at line 67 of file ttmlenc.c.

ttml_encode_frame()

static int ttml_encode_frame ( AVCodecContext * avctx, uint8_t * buf, int bufsize, const AVSubtitle * sub )

static

Definition at line 79 of file ttmlenc.c.

ttml_encode_close()

static av_cold int ttml_encode_close ( AVCodecContext * avctx )

static

Definition at line 141 of file ttmlenc.c.

ttml_get_display_alignment()

static const char * ttml_get_display_alignment ( int alignment )

static

Definition at line 150 of file ttmlenc.c.

Referenced by ttml_write_region().

ttml_get_text_alignment()

static const char * ttml_get_text_alignment ( int alignment )

static

Definition at line 170 of file ttmlenc.c.

Referenced by ttml_write_region().

ttml_get_origin()

static void ttml_get_origin ( ASSScriptInfo script_info, ASSStyle style, int * origin_left, int * origin_top )

static

Definition at line 190 of file ttmlenc.c.

Referenced by ttml_write_region().

ttml_get_extent()

static void ttml_get_extent ( ASSScriptInfo script_info, ASSStyle style, int * width, int * height )

static

Definition at line 199 of file ttmlenc.c.

Referenced by ttml_write_region().

ttml_write_region()

static int ttml_write_region ( AVCodecContext * avctx, AVBPrint * buf, ASSScriptInfo script_info, ASSStyle style )

static

Definition at line 210 of file ttmlenc.c.

Referenced by ttml_write_header_content().

ttml_write_header_content()

static int ttml_write_header_content ( AVCodecContext * avctx )

static

Definition at line 293 of file ttmlenc.c.

Referenced by ttml_encode_init().

ttml_encode_init()

static av_cold int ttml_encode_init ( AVCodecContext * avctx )

static

Definition at line 365 of file ttmlenc.c.

Variable Documentation

ttml_callbacks

const ASSCodesCallbacks ttml_callbacks

static

Initial value:

= {
    .text             = ttml_text_cb,
    .new_line         = ttml_new_line_cb,
}

Definition at line 74 of file ttmlenc.c.

Referenced by ttml_encode_frame().

ff_ttml_encoder

const FFCodec ff_ttml_encoder

Initial value:

= {
    .p.name         = "ttml",
    CODEC_LONG_NAME("TTML subtitle"),
    .p.type         = AVMEDIA_TYPE_SUBTITLE,
    .p.id           = AV_CODEC_ID_TTML,
    .priv_data_size = sizeof(TTMLContext),
    .init           = ttml_encode_init,
    FF_CODEC_ENCODE_SUB_CB(ttml_encode_frame),
    .close          = ttml_encode_close,
    .caps_internal  = FF_CODEC_CAP_INIT_CLEANUP,
}

Definition at line 382 of file ttmlenc.c.