FFmpeg
Data Structures | Macros | Functions
ass.h File Reference
#include "avcodec.h"
#include "libavutil/bprint.h"

Go to the source code of this file.

Data Structures

struct  FFASSDecoderContext
 

Macros

#define ASS_DEFAULT_PLAYRESX   384
 
#define ASS_DEFAULT_PLAYRESY   288
 
Default values for ASS style
#define ASS_DEFAULT_FONT   "Arial"
 
#define ASS_DEFAULT_FONT_SIZE   16
 
#define ASS_DEFAULT_COLOR   0xffffff
 
#define ASS_DEFAULT_BACK_COLOR   0
 
#define ASS_DEFAULT_BOLD   0
 
#define ASS_DEFAULT_ITALIC   0
 
#define ASS_DEFAULT_UNDERLINE   0
 
#define ASS_DEFAULT_ALIGNMENT   2
 
#define ASS_DEFAULT_BORDERSTYLE   1
 

Functions

int ff_ass_subtitle_header (AVCodecContext *avctx, const char *font, int font_size, int color, int back_color, int bold, int italic, int underline, int border_style, int alignment)
 Generate a suitable AVCodecContext.subtitle_header for SUBTITLE_ASS. More...
 
int ff_ass_subtitle_header_default (AVCodecContext *avctx)
 Generate a suitable AVCodecContext.subtitle_header for SUBTITLE_ASS with default style. More...
 
char * ff_ass_get_dialog (int readorder, int layer, const char *style, const char *speaker, const char *text)
 Craft an ASS dialog string. More...
 
int ff_ass_add_rect (AVSubtitle *sub, const char *dialog, int readorder, int layer, const char *style, const char *speaker)
 Add an ASS dialog to a subtitle. More...
 
void ff_ass_decoder_flush (AVCodecContext *avctx)
 Helper to flush a text subtitles decoder making use of the FFASSDecoderContext. More...
 
void ff_ass_bprint_text_event (AVBPrint *buf, const char *p, int size, const char *linebreaks, int keep_ass_markup)
 Escape a text subtitle using ASS syntax into an AVBPrint buffer. More...
 

Macro Definition Documentation

#define ASS_DEFAULT_PLAYRESX   384

Definition at line 28 of file ass.h.

Referenced by capture_screen(), ff_ass_subtitle_header(), and srt_to_ass().

#define ASS_DEFAULT_PLAYRESY   288

Definition at line 29 of file ass.h.

Referenced by capture_screen(), ff_ass_subtitle_header(), and srt_to_ass().

#define ASS_DEFAULT_FONT   "Arial"
#define ASS_DEFAULT_FONT_SIZE   16

Definition at line 36 of file ass.h.

Referenced by ff_ass_subtitle_header_default(), init_decoder(), microdvd_init(), and srt_style_apply().

#define ASS_DEFAULT_COLOR   0xffffff
#define ASS_DEFAULT_BACK_COLOR   0
#define ASS_DEFAULT_BOLD   0
#define ASS_DEFAULT_ITALIC   0
#define ASS_DEFAULT_UNDERLINE   0
#define ASS_DEFAULT_ALIGNMENT   2
#define ASS_DEFAULT_BORDERSTYLE   1

Function Documentation

int ff_ass_subtitle_header ( AVCodecContext avctx,
const char *  font,
int  font_size,
int  color,
int  back_color,
int  bold,
int  italic,
int  underline,
int  border_style,
int  alignment 
)

Generate a suitable AVCodecContext.subtitle_header for SUBTITLE_ASS.

Parameters
avctxpointer to the AVCodecContext
fontname of the default font face to use
font_sizedefault font size to use
colordefault text color to use (ABGR)
back_colordefault background color to use (ABGR)
bold1 for bold text, 0 for normal text
italic1 for italic text, 0 for normal text
underline1 for underline text, 0 for normal text
alignmentposition of the text (left, center, top...), defined after the layout of the numpad (1-3 sub, 4-6 mid, 7-9 top)
Returns
>= 0 on success otherwise an error code <0

Definition at line 29 of file ass.c.

Referenced by ff_ass_subtitle_header_default(), init_decoder(), microdvd_init(), and mov_text_init().

int ff_ass_subtitle_header_default ( AVCodecContext avctx)

Generate a suitable AVCodecContext.subtitle_header for SUBTITLE_ASS with default style.

Parameters
avctxpointer to the AVCodecContext
Returns
>= 0 on success otherwise an error code <0

Definition at line 80 of file ass.c.

Referenced by mov_text_init(), my_ass_subtitle_header(), sami_init(), srt_decode_frame(), and teletext_init_decoder().

char* ff_ass_get_dialog ( int  readorder,
int  layer,
const char *  style,
const char *  speaker,
const char *  text 
)

Craft an ASS dialog string.

Definition at line 93 of file ass.c.

Referenced by create_ass_text(), ff_ass_add_rect(), and gen_sub_ass().

int ff_ass_add_rect ( AVSubtitle sub,
const char *  dialog,
int  readorder,
int  layer,
const char *  style,
const char *  speaker 
)
void ff_ass_decoder_flush ( AVCodecContext avctx)

Helper to flush a text subtitles decoder making use of the FFASSDecoderContext.

Definition at line 124 of file ass.c.

Referenced by srt_decode_frame().

void ff_ass_bprint_text_event ( AVBPrint *  buf,
const char *  p,
int  size,
const char *  linebreaks,
int  keep_ass_markup 
)

Escape a text subtitle using ASS syntax into an AVBPrint buffer.

Newline characters will be escaped to .

Parameters
bufpointer to an initialized AVBPrint buffer
psource text
sizesize of the source text
linebreaksadditional newline chars, which will be escaped to
keep_ass_markupbraces and backslash will not be escaped if set

Definition at line 131 of file ass.c.

Referenced by create_ass_text(), and text_decode_frame().