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

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

Data Structures
struct	FadeContext

Macros
#define	R 0

#define	G 1

#define	B 2

#define	A 3

#define	Y 0

#define	U 1

#define	V 2

#define	FADE_IN 0

#define	FADE_OUT 1

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

#define	FLAGS AV_OPT_FLAG_VIDEO_PARAM\|AV_OPT_FLAG_FILTERING_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_slice_alpha (AVFilterContext ctx, void arg, int jobnr, int nb_jobs)

static int	filter_frame (AVFilterLink inlink, AVFrame frame)

	AVFILTER_DEFINE_CLASS (fade)

Variables
static const enum AVPixelFormat	studio_level_pix_fmts []

static const AVOption	fade_options []

static const AVFilterPad	avfilter_vf_fade_inputs []

static const AVFilterPad	avfilter_vf_fade_outputs []

AVFilter	avfilter_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 R 0

Definition at line 39 of file vf_fade.c.

#define G 1

Definition at line 40 of file vf_fade.c.

#define B 2

Definition at line 41 of file vf_fade.c.

#define A 3

Definition at line 42 of file vf_fade.c.

#define Y 0

Definition at line 44 of file vf_fade.c.

#define U 1

Definition at line 45 of file vf_fade.c.

#define V 2

Definition at line 46 of file vf_fade.c.

#define FADE_IN 0

Definition at line 48 of file vf_fade.c.

Referenced by init().

#define FADE_OUT 1

Definition at line 49 of file vf_fade.c.

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

Definition at line 293 of file vf_fade.c.

#define FLAGS AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM

Definition at line 294 of file vf_fade.c.

Function Documentation

static av_cold int init ( AVFilterContext * ctx )

static

Definition at line 66 of file vf_fade.c.

static int query_formats ( AVFilterContext * ctx )

static

Definition at line 95 of file vf_fade.c.

static int config_props ( AVFilterLink * inlink )

static

Definition at line 120 of file vf_fade.c.

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

static

Definition at line 141 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 164 of file vf_fade.c.

Referenced by filter_frame().

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

static

Definition at line 191 of file vf_fade.c.

Referenced by filter_frame().

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

static

Definition at line 216 of file vf_fade.c.

AVFILTER_DEFINE_CLASS ( fade )

Variable Documentation

const enum AVPixelFormat studio_level_pix_fmts[]

static

Initial value:

= {
    AV_PIX_FMT_YUV444P,  AV_PIX_FMT_YUV422P,  AV_PIX_FMT_YUV420P,
    AV_PIX_FMT_YUV411P,  AV_PIX_FMT_YUV410P,
    AV_PIX_FMT_YUV440P,
    AV_PIX_FMT_NONE
}

Definition at line 113 of file vf_fade.c.

Referenced by config_props().

const AVOption fade_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" },
    { "t",    "'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 },
    { "s",           "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 = 25 }, 0, INT_MAX, FLAGS },
    { "n",           "Number of frames to which the effect should be applied.",
                                                    OFFSET(nb_frames),   AV_OPT_TYPE_INT, { .i64 = 25 }, 0, INT_MAX, FLAGS },
    { "alpha",       "fade alpha if it is available on the input", OFFSET(alpha),       AV_OPT_TYPE_INT, {.i64 = 0    }, 0,       1, FLAGS },
    { "start_time",  "Number of seconds of the beginning of the effect.",
                                                    OFFSET(start_time),  AV_OPT_TYPE_DURATION, {.i64 = 0. }, 0, INT32_MAX, FLAGS },
    { "st",          "Number of seconds of the beginning of the effect.",
                                                    OFFSET(start_time),  AV_OPT_TYPE_DURATION, {.i64 = 0. }, 0, INT32_MAX, FLAGS },
    { "duration",    "Duration of the effect in seconds.",
                                                    OFFSET(duration),    AV_OPT_TYPE_DURATION, {.i64 = 0. }, 0, INT32_MAX, FLAGS },
    { "d",           "Duration of the effect in seconds.",
                                                    OFFSET(duration),    AV_OPT_TYPE_DURATION, {.i64 = 0. }, 0, INT32_MAX, FLAGS },
    { NULL }
}

Definition at line 296 of file vf_fade.c.

const AVFilterPad avfilter_vf_fade_inputs[]

static

Initial value:

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

Definition at line 323 of file vf_fade.c.

const AVFilterPad avfilter_vf_fade_outputs[]

static

Initial value:

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

Definition at line 334 of file vf_fade.c.

AVFilter avfilter_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 342 of file vf_fade.c.

Data Structures

Macros

Functions

Variables

Detailed Description

Macro Definition Documentation

Function Documentation

Variable Documentation