vf_feedback.c File Reference

feedback video filter More...

#include "libavutil/fifo.h"
#include "libavutil/imgutils.h"
#include "libavutil/opt.h"
#include "libavutil/internal.h"
#include "avfilter.h"
#include "filters.h"
#include "formats.h"
#include "video.h"

Go to the source code of this file.

Data Structures
struct	FeedbackContext

Macros
#define	OFFSET(x)
#define	FLAGS   (AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_FILTERING_PARAM)
#define	TFLAGS   (AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_FILTERING_PARAM | AV_OPT_FLAG_RUNTIME_PARAM)

Functions
static void	adjust_pos (AVFilterContext *ctx, FeedbackContext *s)
static void	adjust_parameters (AVFilterContext *ctx, FeedbackContext *s)
static int	config_input (AVFilterLink *inlink)
static int	config_output (AVFilterLink *outlink)
static int	query_formats (const AVFilterContext *ctx, AVFilterFormatsConfig **cfg_in, AVFilterFormatsConfig **cfg_out)
static int	activate (AVFilterContext *ctx)
static av_cold int	init (AVFilterContext *ctx)
static av_cold void	uninit (AVFilterContext *ctx)
	AVFILTER_DEFINE_CLASS (feedback)

Variables
static const AVFilterPad	inputs []
static const AVFilterPad	outputs []
static const AVOption	feedback_options []
const FFFilter	ff_vf_feedback

Detailed Description

feedback video filter

Definition in file vf_feedback.c.

Macro Definition Documentation

OFFSET

#define OFFSET

(

x

)

Value:

offsetof(FeedbackContext, x)

Definition at line 318 of file vf_feedback.c.

FLAGS

#define FLAGS   (AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_FILTERING_PARAM)

Definition at line 319 of file vf_feedback.c.

TFLAGS

#define TFLAGS   (AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_FILTERING_PARAM | AV_OPT_FLAG_RUNTIME_PARAM)

Definition at line 320 of file vf_feedback.c.

Function Documentation

adjust_pos()

static void adjust_pos ( AVFilterContext * ctx, FeedbackContext * s )

static

Definition at line 47 of file vf_feedback.c.

Referenced by activate(), and adjust_parameters().

adjust_parameters()

static void adjust_parameters ( AVFilterContext * ctx, FeedbackContext * s )

static

Definition at line 55 of file vf_feedback.c.

Referenced by config_input(), and config_output().

config_input()

static int config_input ( AVFilterLink * inlink )

static

Definition at line 75 of file vf_feedback.c.

config_output()

static int config_output ( AVFilterLink * outlink )

static

Definition at line 94 of file vf_feedback.c.

query_formats()

static int query_formats ( const AVFilterContext * ctx, AVFilterFormatsConfig ** cfg_in, AVFilterFormatsConfig ** cfg_out )

static

Definition at line 109 of file vf_feedback.c.

activate()

static int activate ( AVFilterContext * ctx )

static

Definition at line 119 of file vf_feedback.c.

init()

static av_cold int init ( AVFilterContext * ctx )

static

Definition at line 263 of file vf_feedback.c.

uninit()

static av_cold void uninit ( AVFilterContext * ctx )

static

Definition at line 274 of file vf_feedback.c.

AVFILTER_DEFINE_CLASS()

AVFILTER_DEFINE_CLASS

(

feedback

)

Variable Documentation

inputs

const AVFilterPad inputs[]

static

Initial value:

= {
    {
        .name         = "default",
        .type         = AVMEDIA_TYPE_VIDEO,
        .config_props = config_input,
    },
    {
        .name         = "feedin",
        .type         = AVMEDIA_TYPE_VIDEO,
        .config_props = config_input,
    },
}

Definition at line 292 of file vf_feedback.c.

outputs

const AVFilterPad outputs[]

static

Initial value:

= {
    {
        .name         = "default",
        .type         = AVMEDIA_TYPE_VIDEO,
        .config_props = config_output,
    },
    {
        .name         = "feedout",
        .type         = AVMEDIA_TYPE_VIDEO,
        .config_props = config_output,
    },
}

Definition at line 305 of file vf_feedback.c.

feedback_options

const AVOption feedback_options[]

static

Initial value:

= {
    { "x", "set top left crop position", OFFSET(x), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, TFLAGS },
    { "y", "set top left crop position", OFFSET(y), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, TFLAGS },
    { "w", "set crop size",              OFFSET(w), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, FLAGS },
    { "h", "set crop size",              OFFSET(h), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, FLAGS },
    { NULL }
}

Definition at line 322 of file vf_feedback.c.

ff_vf_feedback

const FFFilter ff_vf_feedback

Initial value:

= {
    .p.name        = "feedback",
    .p.description = NULL_IF_CONFIG_SMALL("Apply feedback video filter."),
    .p.priv_class  = &feedback_class,
    .p.flags       = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL,
    .priv_size   = sizeof(FeedbackContext),
    .activate    = activate,
    .init        = init,
    .uninit      = uninit,
    FILTER_INPUTS(inputs),
    FILTER_OUTPUTS(outputs),
    FILTER_QUERY_FUNC2(query_formats),
    .process_command = ff_filter_process_command,
}

Definition at line 332 of file vf_feedback.c.