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vf_normalize.c File Reference
#include "libavutil/imgutils.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  NormalizeContext


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


static void normalize (NormalizeContext *s, AVFrame *in, AVFrame *out)
static int query_formats (AVFilterContext *ctx)
static int config_input (AVFilterLink *inlink)
static av_cold void uninit (AVFilterContext *ctx)
static int filter_frame (AVFilterLink *inlink, AVFrame *in)


static const AVOption normalize_options []
static const AVFilterPad inputs []
static const AVFilterPad outputs []
AVFilter ff_vf_normalize

Macro Definition Documentation

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

Definition at line 107 of file vf_normalize.c.

Definition at line 108 of file vf_normalize.c.

Function Documentation

static void normalize ( NormalizeContext s,
AVFrame in,
AVFrame out 

Definition at line 124 of file vf_normalize.c.

Referenced by compute_lpc_coefs(), and filter_frame().

static int query_formats ( AVFilterContext ctx)

Definition at line 255 of file vf_normalize.c.

static int config_input ( AVFilterLink inlink)

Definition at line 282 of file vf_normalize.c.

static av_cold void uninit ( AVFilterContext ctx)

Definition at line 313 of file vf_normalize.c.

static int filter_frame ( AVFilterLink inlink,
AVFrame in 

Definition at line 323 of file vf_normalize.c.

Variable Documentation

const AVOption normalize_options[]
Initial value:
= {
{ "blackpt", "output color to which darkest input color is mapped", OFFSET(blackpt), AV_OPT_TYPE_COLOR, { .str = "black" }, CHAR_MIN, CHAR_MAX, FLAGS },
{ "whitept", "output color to which brightest input color is mapped", OFFSET(whitept), AV_OPT_TYPE_COLOR, { .str = "white" }, CHAR_MIN, CHAR_MAX, FLAGS },
{ "smoothing", "amount of temporal smoothing of the input range, to reduce flicker", OFFSET(smoothing), AV_OPT_TYPE_INT, {.i64=0}, 0, INT_MAX/8, FLAGS },
{ "independence", "proportion of independent to linked channel normalization", OFFSET(independence), AV_OPT_TYPE_FLOAT, {.dbl=1.0}, 0.0, 1.0, FLAGS },
{ "strength", "strength of filter, from no effect to full normalization", OFFSET(strength), AV_OPT_TYPE_FLOAT, {.dbl=1.0}, 0.0, 1.0, FLAGS },
{ NULL }
#define NULL
Definition: coverity.c:32
#define OFFSET(x)
Definition: vf_normalize.c:107
#define FLAGS
Definition: vf_normalize.c:108

Definition at line 110 of file vf_normalize.c.

const AVFilterPad inputs[]
Initial value:
= {
.name = "default",
.filter_frame = filter_frame,
.config_props = config_input,
{ NULL }
#define NULL
Definition: coverity.c:32
static int filter_frame(AVFilterLink *inlink, AVFrame *in)
Definition: vf_normalize.c:323
static int config_input(AVFilterLink *inlink)
Definition: vf_normalize.c:282

Definition at line 359 of file vf_normalize.c.

const AVFilterPad outputs[]
Initial value:
= {
.name = "default",
{ NULL }
#define NULL
Definition: coverity.c:32

Definition at line 369 of file vf_normalize.c.

AVFilter ff_vf_normalize
Initial value:
= {
.name = "normalize",
.description = NULL_IF_CONFIG_SMALL("Normalize RGB video."),
.priv_size = sizeof(NormalizeContext),
.priv_class = &normalize_class,
static int query_formats(AVFilterContext *ctx)
Definition: vf_normalize.c:255
static const AVFilterPad outputs[]
Definition: vf_normalize.c:369
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:186
static const AVFilterPad inputs[]
Definition: vf_normalize.c:359
static av_cold void uninit(AVFilterContext *ctx)
Definition: vf_normalize.c:313

Definition at line 377 of file vf_normalize.c.