vf_fade.c File Reference

video fade filter based heavily on vf_negate.c by Bobby Bingham More...

#include "libavutil/pixdesc.h"
#include "avfilter.h"

Go to the source code of this file.

Data Structures

struct  FadeContext
 

Functions

static av_cold int init (AVFilterContext *ctx, const char *args, void *opaque)
 
static int query_formats (AVFilterContext *ctx)
 
static int config_props (AVFilterLink *inlink)
 
static void draw_slice (AVFilterLink *inlink, int y, int h, int slice_dir)
 
static void end_frame (AVFilterLink *inlink)
 

Variables

AVFilter avfilter_vf_fade
 

Detailed Description

video fade filter based heavily on vf_negate.c by Bobby Bingham

Definition in file vf_fade.c.

Function Documentation

static int config_props ( AVFilterLink inlink)
static

Definition at line 85 of file vf_fade.c.

static void draw_slice ( AVFilterLink inlink,
int  y,
int  h,
int  slice_dir 
)
static

Definition at line 97 of file vf_fade.c.

static void end_frame ( AVFilterLink inlink)
static

Definition at line 137 of file vf_fade.c.

static av_cold int init ( AVFilterContext ctx,
const char *  args,
void opaque 
)
static

Definition at line 37 of file vf_fade.c.

static int query_formats ( AVFilterContext ctx)
static

Definition at line 70 of file vf_fade.c.

Variable Documentation

AVFilter avfilter_vf_fade
Initial value:
= {
.name = "fade",
.description = NULL_IF_CONFIG_SMALL("Fade in/out input video"),
.init = init,
.priv_size = sizeof(FadeContext),
.inputs = (AVFilterPad[]) {{ .name = "default",
.config_props = config_props,
.get_video_buffer = avfilter_null_get_video_buffer,
.start_frame = avfilter_null_start_frame,
.draw_slice = draw_slice,
.end_frame = end_frame,
.min_perms = AV_PERM_READ | AV_PERM_WRITE,
.rej_perms = AV_PERM_PRESERVE, },
{ .name = NULL}},
.outputs = (AVFilterPad[]) {{ .name = "default",
.type = AVMEDIA_TYPE_VIDEO, },
{ .name = NULL}},
}
static int config_props(AVFilterLink *inlink)
Definition: vf_fade.c:85
#define AV_PERM_READ
can read from the buffer
Definition: avfilter.h:81
A filter pad used for either input or output.
Definition: avfilter.h:312
static int query_formats(AVFilterContext *ctx)
Definition: vf_fade.c:70
static void end_frame(AVFilterLink *inlink)
Definition: vf_fade.c:137
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:191
NULL
Definition: eval.c:50
static av_cold int init(AVFilterContext *ctx, const char *args, void *opaque)
Definition: vf_fade.c:37
void avfilter_null_start_frame(AVFilterLink *link, AVFilterBufferRef *picref)
start_frame() handler for filters which simply pass video along
Definition: defaults.c:268
AVFilterBufferRef * avfilter_null_get_video_buffer(AVFilterLink *link, int perms, int w, int h)
get_video_buffer() handler for filters which simply pass video along
Definition: defaults.c:288
#define AV_PERM_PRESERVE
nobody else can overwrite the buffer
Definition: avfilter.h:83
static void draw_slice(AVFilterLink *inlink, int y, int h, int slice_dir)
Definition: vf_fade.c:97
#define AV_PERM_WRITE
can write to the buffer
Definition: avfilter.h:82

Definition at line 150 of file vf_fade.c.