FFmpeg
 All Data Structures Namespaces Files Functions Variables Typedefs Enumerations Enumerator Macros Groups Pages
Data Structures | Macros | Functions | Variables
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

#define OFFSET (   x)    offsetof(AssContext, x)

Definition at line 62 of file vf_subtitles.c.

Definition at line 63 of file vf_subtitles.c.

#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 }, \

Definition at line 65 of file vf_subtitles.c.

#define AR (   c)    ( (c)>>24)

Definition at line 152 of file vf_subtitles.c.

Referenced by overlay_ass_image().

#define AG (   c)    (((c)>>16)&0xFF)

Definition at line 153 of file vf_subtitles.c.

Referenced by overlay_ass_image().

#define AB (   c)    (((c)>>8) &0xFF)

Definition at line 154 of file vf_subtitles.c.

Referenced by overlay_ass_image().

#define AA (   c)    ((0xFF-c) &0xFF)

Definition at line 155 of file vf_subtitles.c.

Referenced by overlay_ass_image().

Function Documentation

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

Definition at line 82 of file vf_subtitles.c.

Referenced by init().

static av_cold int init ( AVFilterContext ctx)
static

Definition at line 92 of file vf_subtitles.c.

static av_cold void uninit ( AVFilterContext ctx)
static

Definition at line 117 of file vf_subtitles.c.

static int query_formats ( AVFilterContext ctx)
static

Definition at line 129 of file vf_subtitles.c.

static int config_input ( AVFilterLink inlink)
static

Definition at line 135 of file vf_subtitles.c.

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

Definition at line 157 of file vf_subtitles.c.

Referenced by filter_frame().

static int filter_frame ( AVFilterLink inlink,
AVFrame picref 
)
static

Definition at line 172 of file vf_subtitles.c.

Variable Documentation

const int ass_libavfilter_log_level_map[]
static
Initial value:
= {
[0] = AV_LOG_FATAL,
[1] = AV_LOG_ERROR,
[4] = AV_LOG_INFO,
[5] = AV_LOG_INFO,
[7] = AV_LOG_DEBUG,
}

Definition at line 71 of file vf_subtitles.c.

Referenced by ass_log().

const AVFilterPad ass_inputs[]
static
Initial value:
= {
{
.name = "default",
.filter_frame = filter_frame,
.config_props = config_input,
.needs_writable = 1,
},
{ NULL }
}

Definition at line 190 of file vf_subtitles.c.

const AVFilterPad ass_outputs[]
static
Initial value:
= {
{
.name = "default",
},
{ NULL }
}

Definition at line 201 of file vf_subtitles.c.