vf_subtitles.c File Reference

Libass subtitles burning filter. More...

#include <ass/ass.h>
#include "config.h"
#include "libavutil/avstring.h"
#include "libavutil/imgutils.h"
#include "libavutil/opt.h"
#include "libavutil/parseutils.h"
#include "drawutils.h"
#include "avfilter.h"
#include "internal.h"
#include "formats.h"
#include "video.h"

Go to the source code of this file.

Data Structures
struct	AssContext

Macros
#define	OFFSET(x)   offsetof(AssContext, x)
#define	FLAGS   AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
#define	COMMON_OPTIONS
#define	AR(c)   ( (c)>>24)
#define	AG(c)   (((c)>>16)&0xFF)
#define	AB(c)   (((c)>>8) &0xFF)
#define	AA(c)   ((0xFF-(c)) &0xFF)

Functions
static void	ass_log (int ass_level, const char *fmt, va_list args, void *ctx)
static av_cold int	init (AVFilterContext *ctx)
static av_cold void	uninit (AVFilterContext *ctx)
static int	query_formats (AVFilterContext *ctx)
static int	config_input (AVFilterLink *inlink)
static void	overlay_ass_image (AssContext *ass, AVFrame *picref, const ASS_Image *image)
static int	filter_frame (AVFilterLink *inlink, AVFrame *picref)

Variables
static const int	ass_libavfilter_log_level_map []
static const AVFilterPad	ass_inputs []
static const AVFilterPad	ass_outputs []

Detailed Description

Libass subtitles burning filter.

See also

{http://www.matroska.org/technical/specs/subtitles/ssa.html}

Definition in file vf_subtitles.c.

Macro Definition Documentation

OFFSET

#define OFFSET

(

x

)

offsetof(AssContext, x)

Definition at line 65 of file vf_subtitles.c.

FLAGS

#define FLAGS   AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM

Definition at line 66 of file vf_subtitles.c.

COMMON_OPTIONS

#define COMMON_OPTIONS

Value:

{"filename",       "set the filename of file to read",                         OFFSET(filename),   AV_OPT_TYPE_STRING,     {.str = NULL},  CHAR_MIN, CHAR_MAX, FLAGS }, \
    {"f",              "set the filename of file to read",                         OFFSET(filename),   AV_OPT_TYPE_STRING,     {.str = NULL},  CHAR_MIN, CHAR_MAX, FLAGS }, \
    {"original_size",  "set the size of the original video (used to scale fonts)", OFFSET(original_w), AV_OPT_TYPE_IMAGE_SIZE, {.str = NULL},  CHAR_MIN, CHAR_MAX, FLAGS }, \
    {"fontsdir",       "set the directory containing the fonts to read",           OFFSET(fontsdir),   AV_OPT_TYPE_STRING,     {.str = NULL},  CHAR_MIN, CHAR_MAX, FLAGS }, \
    {"alpha",          "enable processing of alpha channel",                       OFFSET(alpha),      AV_OPT_TYPE_BOOL,       {.i64 = 0   },         0,        1, FLAGS }, \

Definition at line 68 of file vf_subtitles.c.

AR

#define AR

(

c

)

( (c)>>24)

Definition at line 158 of file vf_subtitles.c.

Referenced by overlay_ass_image().

AG

#define AG

(

c

)

(((c)>>16)&0xFF)

Definition at line 159 of file vf_subtitles.c.

Referenced by overlay_ass_image().

AB

#define AB

(

c

)

(((c)>>8) &0xFF)

Definition at line 160 of file vf_subtitles.c.

Referenced by overlay_ass_image().

AA

#define AA

(

c

)

((0xFF-(c)) &0xFF)

Definition at line 161 of file vf_subtitles.c.

Referenced by overlay_ass_image().

Function Documentation

ass_log()

static void ass_log ( int  ass_level, const char *  fmt, va_list  args, void *  ctx  )

static

Definition at line 87 of file vf_subtitles.c.

Referenced by init().

init()

static av_cold int init ( AVFilterContext *  ctx )

static

Definition at line 97 of file vf_subtitles.c.

uninit()

static av_cold void uninit ( AVFilterContext *  ctx )

static

Definition at line 124 of file vf_subtitles.c.

query_formats()

static int query_formats ( AVFilterContext *  ctx )

static

Definition at line 136 of file vf_subtitles.c.

config_input()

static int config_input ( AVFilterLink *  inlink )

static

Definition at line 141 of file vf_subtitles.c.

overlay_ass_image()

static void overlay_ass_image ( AssContext *  ass, AVFrame *  picref, const ASS_Image *  image  )

static

Definition at line 163 of file vf_subtitles.c.

Referenced by filter_frame().

filter_frame()

static int filter_frame ( AVFilterLink *  inlink, AVFrame *  picref  )

static

Definition at line 178 of file vf_subtitles.c.

Variable Documentation

ass_libavfilter_log_level_map

const int ass_libavfilter_log_level_map[]

static

Initial value:

= {
    [0] = AV_LOG_FATAL,     
    [1] = AV_LOG_ERROR,     
    [2] = AV_LOG_WARNING,   
    [3] = AV_LOG_WARNING,   
    [4] = AV_LOG_INFO,      
    [5] = AV_LOG_INFO,      
    [6] = AV_LOG_VERBOSE,   
    [7] = AV_LOG_DEBUG,     
}

Definition at line 76 of file vf_subtitles.c.

Referenced by ass_log().

ass_inputs

const AVFilterPad ass_inputs[]

static

Initial value:

= {
    {
        .name             = "default",
        .type             = AVMEDIA_TYPE_VIDEO,
        .filter_frame     = filter_frame,
        .config_props     = config_input,
        .needs_writable   = 1,
    },
    { NULL }
}

Definition at line 196 of file vf_subtitles.c.

ass_outputs

const AVFilterPad ass_outputs[]

static

Initial value:

= {
    {
        .name = "default",
        .type = AVMEDIA_TYPE_VIDEO,
    },
    { NULL }
}

Definition at line 207 of file vf_subtitles.c.