vf_hysteresis.c File Reference

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

Go to the source code of this file.

Data Structures
struct	HysteresisContext

Macros
#define	OFFSET(x)   offsetof(HysteresisContext, x)
#define	FLAGS   AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM

Functions
static int	query_formats (AVFilterContext *ctx)
static int	process_frame (FFFrameSync *fs)
static int	passed (HysteresisContext *s, int x, int y, int w)
static void	push (HysteresisContext *s, int x, int y, int w)
static void	pop (HysteresisContext *s, int *x, int *y)
static int	is_empty (HysteresisContext *s)
static void	hysteresis8 (HysteresisContext *s, const uint8_t *bsrc, const uint8_t *asrc, uint8_t *dst, ptrdiff_t blinesize, ptrdiff_t alinesize, ptrdiff_t dlinesize, int w, int h)
static void	hysteresis16 (HysteresisContext *s, const uint8_t *bbsrc, const uint8_t *aasrc, uint8_t *ddst, ptrdiff_t blinesize, ptrdiff_t alinesize, ptrdiff_t dlinesize, int w, int h)
static int	config_input (AVFilterLink *inlink)
static int	config_output (AVFilterLink *outlink)
static int	activate (AVFilterContext *ctx)
static av_cold void	uninit (AVFilterContext *ctx)
	FRAMESYNC_DEFINE_CLASS (hysteresis, HysteresisContext, fs)

Variables
static const AVOption	hysteresis_options []
static const AVFilterPad	hysteresis_inputs []
static const AVFilterPad	hysteresis_outputs []
AVFilter	ff_vf_hysteresis

Macro Definition Documentation

OFFSET

#define OFFSET

(

x

)

offsetof(HysteresisContext, x)

Definition at line 31 of file vf_hysteresis.c.

FLAGS

#define FLAGS   AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM

Definition at line 32 of file vf_hysteresis.c.

Function Documentation

query_formats()

static int query_formats ( AVFilterContext *  ctx )

static

Definition at line 61 of file vf_hysteresis.c.

process_frame()

static int process_frame ( FFFrameSync *  fs )

static

Definition at line 87 of file vf_hysteresis.c.

Referenced by config_output().

passed()

static int passed ( HysteresisContext *  s, int  x, int  y, int  w  )

static

Definition at line 140 of file vf_hysteresis.c.

Referenced by hysteresis16(), and hysteresis8().

push()

static void push ( HysteresisContext *  s, int  x, int  y, int  w  )

static

Definition at line 145 of file vf_hysteresis.c.

Referenced by hysteresis16(), and hysteresis8().

pop()

static void pop ( HysteresisContext *  s, int *  x, int *  y  )

static

Definition at line 151 of file vf_hysteresis.c.

Referenced by hysteresis16(), and hysteresis8().

is_empty()

static int is_empty ( HysteresisContext *  s )

static

Definition at line 159 of file vf_hysteresis.c.

Referenced by hysteresis16(), and hysteresis8().

hysteresis8()

static void hysteresis8 ( HysteresisContext *  s, const uint8_t *  bsrc, const uint8_t *  asrc, uint8_t *  dst, ptrdiff_t  blinesize, ptrdiff_t  alinesize, ptrdiff_t  dlinesize, int  w, int  h  )

static

Definition at line 164 of file vf_hysteresis.c.

Referenced by config_input().

hysteresis16()

static void hysteresis16 ( HysteresisContext *  s, const uint8_t *  bbsrc, const uint8_t *  aasrc, uint8_t *  ddst, ptrdiff_t  blinesize, ptrdiff_t  alinesize, ptrdiff_t  dlinesize, int  w, int  h  )

static

Definition at line 206 of file vf_hysteresis.c.

Referenced by config_input().

config_input()

static int config_input ( AVFilterLink *  inlink )

static

Definition at line 255 of file vf_hysteresis.c.

config_output()

static int config_output ( AVFilterLink *  outlink )

static

Definition at line 289 of file vf_hysteresis.c.

activate()

static int activate ( AVFilterContext *  ctx )

static

Definition at line 336 of file vf_hysteresis.c.

uninit()

static av_cold void uninit ( AVFilterContext *  ctx )

static

Definition at line 342 of file vf_hysteresis.c.

FRAMESYNC_DEFINE_CLASS()

FRAMESYNC_DEFINE_CLASS	(	hysteresis	,
		HysteresisContext	,
		fs
	)

Referenced by uninit().

Variable Documentation

hysteresis_options

const AVOption hysteresis_options[]

static

Initial value:

= {
    { "planes",    "set planes",    OFFSET(planes),    AV_OPT_TYPE_INT, {.i64=0xF}, 0, 0xF, FLAGS },
    { "threshold", "set threshold", OFFSET(threshold), AV_OPT_TYPE_INT, {.i64=0},   0, UINT16_MAX, FLAGS },
    { NULL }
}

Definition at line 55 of file vf_hysteresis.c.

hysteresis_inputs

const AVFilterPad hysteresis_inputs[]

static

Initial value:

= {
    {
        .name         = "base",
        .type         = AVMEDIA_TYPE_VIDEO,
        .config_props = config_input,
    },
    {
        .name         = "alt",
        .type         = AVMEDIA_TYPE_VIDEO,
    },
    { NULL }
}

Definition at line 353 of file vf_hysteresis.c.

hysteresis_outputs

const AVFilterPad hysteresis_outputs[]

static

Initial value:

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

Definition at line 366 of file vf_hysteresis.c.

ff_vf_hysteresis

AVFilter ff_vf_hysteresis

Initial value:

= {
    .name          = "hysteresis",
    .description   = NULL_IF_CONFIG_SMALL("Grow first stream into second stream by connecting components."),
    .preinit       = hysteresis_framesync_preinit,
    .priv_size     = sizeof(HysteresisContext),
    .uninit        = uninit,
    .query_formats = query_formats,
    .activate      = activate,
    .inputs        = hysteresis_inputs,
    .outputs       = hysteresis_outputs,
    .priv_class    = &hysteresis_class,
    .flags         = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL,
}

Definition at line 375 of file vf_hysteresis.c.