vf_fade.c File Reference

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

#include "libavutil/common.h"
#include "libavutil/opt.h"
#include "libavutil/pixdesc.h"
#include "avfilter.h"
#include "formats.h"
#include "internal.h"
#include "video.h"

Go to the source code of this file.

Data Structures
struct	FadeContext

Macros
#define	FADE_IN   0
#define	FADE_OUT   1
#define	OFFSET(x)   offsetof(FadeContext, x)
#define	FLAGS   AV_OPT_FLAG_VIDEO_PARAM

Functions
static av_cold int	init (AVFilterContext *ctx)
static int	query_formats (AVFilterContext *ctx)
static int	config_props (AVFilterLink *inlink)
static int	filter_slice_luma (AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
static int	filter_slice_chroma (AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
static int	filter_frame (AVFilterLink *inlink, AVFrame *frame)

Variables
static const AVOption	options []
static const AVClass	fade_class
static const AVFilterPad	avfilter_vf_fade_inputs []
static const AVFilterPad	avfilter_vf_fade_outputs []
AVFilter	ff_vf_fade

Detailed Description

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

Definition in file vf_fade.c.

Macro Definition Documentation

#define FADE_IN   0

Definition at line 36 of file vf_fade.c.

Referenced by init().

#define FADE_OUT   1

Definition at line 37 of file vf_fade.c.

Referenced by init().

#define OFFSET

(

x

)

offsetof(FadeContext, x)

Definition at line 171 of file vf_fade.c.

#define FLAGS   AV_OPT_FLAG_VIDEO_PARAM

Definition at line 172 of file vf_fade.c.

Function Documentation

static av_cold int init ( AVFilterContext *  ctx )

static

Definition at line 48 of file vf_fade.c.

static int query_formats ( AVFilterContext *  ctx )

static

Definition at line 68 of file vf_fade.c.

static int config_props ( AVFilterLink *  inlink )

static

Definition at line 83 of file vf_fade.c.

static int filter_slice_luma ( AVFilterContext *  ctx, void *  arg, int  jobnr, int  nb_jobs  )

static

Definition at line 95 of file vf_fade.c.

Referenced by filter_frame().

static int filter_slice_chroma ( AVFilterContext *  ctx, void *  arg, int  jobnr, int  nb_jobs  )

static

Definition at line 119 of file vf_fade.c.

Referenced by filter_frame().

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

static

Definition at line 145 of file vf_fade.c.

Variable Documentation

const AVOption options[]

static

Initial value:

= {
    { "type", "'in' or 'out' for fade-in/fade-out", OFFSET(type), AV_OPT_TYPE_INT, { .i64 = FADE_IN }, FADE_IN, FADE_OUT, FLAGS, "type" },
        { "in",  "fade-in",  0, AV_OPT_TYPE_CONST, { .i64 = FADE_IN },  .unit = "type" },
        { "out", "fade-out", 0, AV_OPT_TYPE_CONST, { .i64 = FADE_OUT }, .unit = "type" },
    { "start_frame", "Number of the first frame to which to apply the effect.",
                                                    OFFSET(start_frame), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, FLAGS },
    { "nb_frames",   "Number of frames to which the effect should be applied.",
                                                    OFFSET(nb_frames),   AV_OPT_TYPE_INT, { .i64 = 1 }, 0, INT_MAX, FLAGS },
    { NULL },
}

Definition at line 173 of file vf_fade.c.

const AVClass fade_class

static

Initial value:

= {
    .class_name = "fade",
    .item_name  = av_default_item_name,
    .option     = options,
    .version    = LIBAVUTIL_VERSION_INT,
}

Definition at line 184 of file vf_fade.c.

const AVFilterPad avfilter_vf_fade_inputs[]

static

Initial value:

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

Definition at line 191 of file vf_fade.c.

const AVFilterPad avfilter_vf_fade_outputs[]

static

Initial value:

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

Definition at line 203 of file vf_fade.c.

AVFilter ff_vf_fade

Initial value:

= {
    .name          = "fade",
    .description   = NULL_IF_CONFIG_SMALL("Fade in/out input video"),
    .init          = init,
    .priv_size     = sizeof(FadeContext),
    .priv_class    = &fade_class,
    .query_formats = query_formats,

    .inputs    = avfilter_vf_fade_inputs,
    .outputs   = avfilter_vf_fade_outputs,
    .flags     = AVFILTER_FLAG_SLICE_THREADS,
}

Definition at line 211 of file vf_fade.c.