vf_deflicker.c File Reference

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

Go to the source code of this file.

Data Structures
struct	DeflickerContext

Macros
#define	FF_BUFQUEUE_SIZE   129
#define	SIZE   FF_BUFQUEUE_SIZE
#define	OFFSET(x)   offsetof(DeflickerContext, x)
#define	FLAGS   AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM

Enumerations
enum	smooth_mode {   ARITHMETIC_MEAN, GEOMETRIC_MEAN, HARMONIC_MEAN, QUADRATIC_MEAN,   CUBIC_MEAN, POWER_MEAN, MEDIAN, NB_SMOOTH_MODE }

Functions
	AVFILTER_DEFINE_CLASS (deflicker)
static int	query_formats (AVFilterContext *ctx)
static int	deflicker8 (AVFilterContext *ctx, const uint8_t *src, ptrdiff_t src_linesize, uint8_t *dst, ptrdiff_t dst_linesize, int w, int h, float f)
static int	deflicker16 (AVFilterContext *ctx, const uint8_t *ssrc, ptrdiff_t src_linesize, uint8_t *ddst, ptrdiff_t dst_linesize, int w, int h, float f)
static float	calc_avgy8 (AVFilterContext *ctx, AVFrame *in)
static float	calc_avgy16 (AVFilterContext *ctx, AVFrame *in)
static void	get_am_factor (AVFilterContext *ctx, float *f)
static void	get_gm_factor (AVFilterContext *ctx, float *f)
static void	get_hm_factor (AVFilterContext *ctx, float *f)
static void	get_qm_factor (AVFilterContext *ctx, float *f)
static void	get_cm_factor (AVFilterContext *ctx, float *f)
static void	get_pm_factor (AVFilterContext *ctx, float *f)
static int	comparef (const void *a, const void *b)
static void	get_median_factor (AVFilterContext *ctx, float *f)
static int	config_input (AVFilterLink *inlink)
static int	filter_frame (AVFilterLink *inlink, AVFrame *buf)
static int	request_frame (AVFilterLink *outlink)
static av_cold void	uninit (AVFilterContext *ctx)

Variables
static const AVOption	deflicker_options []
static const AVFilterPad	inputs []
static const AVFilterPad	outputs []
AVFilter	ff_vf_deflicker

Macro Definition Documentation

#define FF_BUFQUEUE_SIZE   129

Definition at line 27 of file vf_deflicker.c.

#define SIZE   FF_BUFQUEUE_SIZE

Definition at line 34 of file vf_deflicker.c.

#define OFFSET

(

x

)

offsetof(DeflickerContext, x)

Definition at line 73 of file vf_deflicker.c.

#define FLAGS   AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM

Definition at line 74 of file vf_deflicker.c.

Enumeration Type Documentation

enum smooth_mode

Enumerator
ARITHMETIC_MEAN
GEOMETRIC_MEAN
HARMONIC_MEAN
QUADRATIC_MEAN
CUBIC_MEAN
POWER_MEAN
MEDIAN
NB_SMOOTH_MODE

Definition at line 36 of file vf_deflicker.c.

Function Documentation

AVFILTER_DEFINE_CLASS

(

deflicker

)

static int query_formats ( AVFilterContext *  ctx )

static

Definition at line 94 of file vf_deflicker.c.

static int deflicker8 ( AVFilterContext *  ctx, const uint8_t *  src, ptrdiff_t  src_linesize, uint8_t *  dst, ptrdiff_t  dst_linesize, int  w, int  h, float  f  )

static

Definition at line 120 of file vf_deflicker.c.

Referenced by config_input().

static int deflicker16 ( AVFilterContext *  ctx, const uint8_t *  ssrc, ptrdiff_t  src_linesize, uint8_t *  ddst, ptrdiff_t  dst_linesize, int  w, int  h, float  f  )

static

Definition at line 139 of file vf_deflicker.c.

Referenced by config_input().

static float calc_avgy8 ( AVFilterContext *  ctx, AVFrame *  in  )

static

Definition at line 162 of file vf_deflicker.c.

Referenced by config_input().

static float calc_avgy16 ( AVFilterContext *  ctx, AVFrame *  in  )

static

Definition at line 185 of file vf_deflicker.c.

Referenced by config_input().

static void get_am_factor ( AVFilterContext *  ctx, float *  f  )

static

Definition at line 208 of file vf_deflicker.c.

Referenced by config_input().

static void get_gm_factor ( AVFilterContext *  ctx, float *  f  )

static

Definition at line 223 of file vf_deflicker.c.

Referenced by config_input().

static void get_hm_factor ( AVFilterContext *  ctx, float *  f  )

static

Definition at line 238 of file vf_deflicker.c.

Referenced by config_input().

static void get_qm_factor ( AVFilterContext *  ctx, float *  f  )

static

Definition at line 253 of file vf_deflicker.c.

Referenced by config_input().

static void get_cm_factor ( AVFilterContext *  ctx, float *  f  )

static

Definition at line 269 of file vf_deflicker.c.

Referenced by config_input().

static void get_pm_factor ( AVFilterContext *  ctx, float *  f  )

static

Definition at line 285 of file vf_deflicker.c.

Referenced by config_input().

static int comparef ( const void *  a, const void *  b  )

static

Definition at line 301 of file vf_deflicker.c.

Referenced by get_median_factor().

static void get_median_factor ( AVFilterContext *  ctx, float *  f  )

static

Definition at line 307 of file vf_deflicker.c.

Referenced by config_input().

static int config_input ( AVFilterLink *  inlink )

static

Definition at line 317 of file vf_deflicker.c.

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

static

Definition at line 356 of file vf_deflicker.c.

Referenced by request_frame().

static int request_frame ( AVFilterLink *  outlink )

static

Definition at line 415 of file vf_deflicker.c.

static av_cold void uninit ( AVFilterContext *  ctx )

static

Definition at line 435 of file vf_deflicker.c.

Variable Documentation

const AVOption deflicker_options[]

static

Initial value:

= {
    { "size",  "set how many frames to use",  OFFSET(size), AV_OPT_TYPE_INT, {.i64=5}, 2, SIZE, FLAGS },
    { "s",     "set how many frames to use",  OFFSET(size), AV_OPT_TYPE_INT, {.i64=5}, 2, SIZE, FLAGS },
    { "mode",  "set how to smooth luminance", OFFSET(mode), AV_OPT_TYPE_INT, {.i64=0}, 0, NB_SMOOTH_MODE-1, FLAGS, "mode" },
    { "m",     "set how to smooth luminance", OFFSET(mode), AV_OPT_TYPE_INT, {.i64=0}, 0, NB_SMOOTH_MODE-1, FLAGS, "mode" },
        { "am",      "arithmetic mean", 0, AV_OPT_TYPE_CONST, {.i64=ARITHMETIC_MEAN},  0, 0, FLAGS, "mode" },
        { "gm",      "geometric mean",  0, AV_OPT_TYPE_CONST, {.i64=GEOMETRIC_MEAN},   0, 0, FLAGS, "mode" },
        { "hm",      "harmonic mean",   0, AV_OPT_TYPE_CONST, {.i64=HARMONIC_MEAN},    0, 0, FLAGS, "mode" },
        { "qm",      "quadratic mean",  0, AV_OPT_TYPE_CONST, {.i64=QUADRATIC_MEAN},   0, 0, FLAGS, "mode" },
        { "cm",      "cubic mean",      0, AV_OPT_TYPE_CONST, {.i64=CUBIC_MEAN},       0, 0, FLAGS, "mode" },
        { "pm",      "power mean",      0, AV_OPT_TYPE_CONST, {.i64=POWER_MEAN},       0, 0, FLAGS, "mode" },
        { "median",  "median",          0, AV_OPT_TYPE_CONST, {.i64=MEDIAN},           0, 0, FLAGS, "mode" },
    { "bypass", "leave frames unchanged",  OFFSET(bypass), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1, FLAGS },
    { NULL }
}

Definition at line 76 of file vf_deflicker.c.

const AVFilterPad inputs[]

static

Initial value:

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

Definition at line 443 of file vf_deflicker.c.

const AVFilterPad outputs[]

static

Initial value:

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

Definition at line 453 of file vf_deflicker.c.

AVFilter ff_vf_deflicker

Initial value:

= {
    .name          = "deflicker",
    .description   = NULL_IF_CONFIG_SMALL("Remove temporal frame luminance variations."),
    .priv_size     = sizeof(DeflickerContext),
    .priv_class    = &deflicker_class,
    .uninit        = uninit,
    .query_formats = query_formats,
    .inputs        = inputs,
    .outputs       = outputs,
}

Definition at line 462 of file vf_deflicker.c.