vf_tmidequalizer.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"

Go to the source code of this file.

Data Structures
struct	TMidEqualizerContext

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

Functions
	AVFILTER_DEFINE_CLASS (tmidequalizer)
static int	query_formats (AVFilterContext *ctx)
static void	compute_contrast_function (const float *const histograms[256], const float *const kernel, int nb_frames, int radius, int hsize, float *f, int idx)
static void	apply_contrast_change8 (const uint8_t *src, ptrdiff_t src_linesize, uint8_t *dst, ptrdiff_t dst_linesize, int w, int h, float *change, float *orig)
static void	apply_contrast_change16 (const uint8_t *ssrc, ptrdiff_t src_linesize, uint8_t *ddst, ptrdiff_t dst_linesize, int w, int h, float *change, float *orig)
static int	filter_frame (AVFilterLink *inlink, AVFrame *in)
static void	compute_histogram8 (const uint8_t *src, ptrdiff_t linesize, int w, int h, float *histogram, size_t hsize)
static void	compute_histogram16 (const uint8_t *ssrc, ptrdiff_t linesize, int w, int h, float *histogram, size_t hsize)
static int	config_input (AVFilterLink *inlink)
static int	request_frame (AVFilterLink *outlink)
static void	free_histograms (AVFilterContext *ctx, int x, int nb_frames)
static av_cold void	uninit (AVFilterContext *ctx)

Variables
static const AVOption	tmidequalizer_options []
static const AVFilterPad	tmidequalizer_inputs []
static const AVFilterPad	tmidequalizer_outputs []
AVFilter	ff_vf_tmidequalizer

Macro Definition Documentation

OFFSET

#define OFFSET

(

x

)

offsetof(TMidEqualizerContext, x)

Definition at line 58 of file vf_tmidequalizer.c.

FLAGS

#define FLAGS   AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM

Definition at line 59 of file vf_tmidequalizer.c.

Function Documentation

AVFILTER_DEFINE_CLASS()

AVFILTER_DEFINE_CLASS

(

tmidequalizer

)

query_formats()

static int query_formats ( AVFilterContext *  ctx )

static

Definition at line 70 of file vf_tmidequalizer.c.

compute_contrast_function()

static void compute_contrast_function ( const float *const  histograms[256], const float *const  kernel, int  nb_frames, int  radius, int  hsize, float *  f, int  idx  )

static

Definition at line 99 of file vf_tmidequalizer.c.

Referenced by filter_frame().

apply_contrast_change8()

static void apply_contrast_change8 ( const uint8_t *  src, ptrdiff_t  src_linesize, uint8_t *  dst, ptrdiff_t  dst_linesize, int  w, int  h, float *  change, float *  orig  )

static

Definition at line 141 of file vf_tmidequalizer.c.

Referenced by config_input().

apply_contrast_change16()

static void apply_contrast_change16 ( const uint8_t *  ssrc, ptrdiff_t  src_linesize, uint8_t *  ddst, ptrdiff_t  dst_linesize, int  w, int  h, float *  change, float *  orig  )

static

Definition at line 154 of file vf_tmidequalizer.c.

Referenced by config_input().

filter_frame()

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

static

Definition at line 170 of file vf_tmidequalizer.c.

Referenced by request_frame().

compute_histogram8()

static void compute_histogram8 ( const uint8_t *  src, ptrdiff_t  linesize, int  w, int  h, float *  histogram, size_t  hsize  )

static

Definition at line 288 of file vf_tmidequalizer.c.

Referenced by config_input().

compute_histogram16()

static void compute_histogram16 ( const uint8_t *  ssrc, ptrdiff_t  linesize, int  w, int  h, float *  histogram, size_t  hsize  )

static

Definition at line 306 of file vf_tmidequalizer.c.

Referenced by config_input().

config_input()

static int config_input ( AVFilterLink *  inlink )

static

Definition at line 326 of file vf_tmidequalizer.c.

request_frame()

static int request_frame ( AVFilterLink *  outlink )

static

Definition at line 374 of file vf_tmidequalizer.c.

free_histograms()

static void free_histograms ( AVFilterContext *  ctx, int  x, int  nb_frames  )

static

Definition at line 388 of file vf_tmidequalizer.c.

Referenced by uninit().

uninit()

static av_cold void uninit ( AVFilterContext *  ctx )

static

Definition at line 397 of file vf_tmidequalizer.c.

Variable Documentation

tmidequalizer_options

const AVOption tmidequalizer_options[]

static

Initial value:

= {
    { "radius", "set radius", OFFSET(radius), AV_OPT_TYPE_INT,   {.i64=5},   1, 127, FLAGS },
    { "sigma",  "set sigma",  OFFSET(sigma),  AV_OPT_TYPE_FLOAT, {.dbl=0.5}, 0,   1, FLAGS },
    { "planes", "set planes", OFFSET(planes), AV_OPT_TYPE_INT,   {.i64=0xF}, 0, 0xF, FLAGS },
    { NULL }
}

Definition at line 61 of file vf_tmidequalizer.c.

tmidequalizer_inputs

const AVFilterPad tmidequalizer_inputs[]

static

Initial value:

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

Definition at line 411 of file vf_tmidequalizer.c.

tmidequalizer_outputs

const AVFilterPad tmidequalizer_outputs[]

static

Initial value:

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

Definition at line 421 of file vf_tmidequalizer.c.

ff_vf_tmidequalizer

AVFilter ff_vf_tmidequalizer

Initial value:

= {
    .name          = "tmidequalizer",
    .description   = NULL_IF_CONFIG_SMALL("Apply Temporal Midway Equalization."),
    .priv_size     = sizeof(TMidEqualizerContext),
    .uninit        = uninit,
    .query_formats = query_formats,
    .inputs        = tmidequalizer_inputs,
    .outputs       = tmidequalizer_outputs,
    .priv_class    = &tmidequalizer_class,
    .flags         = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL,
}

Definition at line 430 of file vf_tmidequalizer.c.