vf_midequalizer.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	MidEqualizerContext

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

Functions
	AVFILTER_DEFINE_CLASS (midequalizer)
static int	query_formats (AVFilterContext *ctx)
static int	process_frame (FFFrameSync *fs)
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 uint16_t *src, ptrdiff_t linesize, int w, int h, float *histogram, size_t hsize)
static void	compute_contrast_change (float *histogram1, float *histogram2, unsigned *cchange, size_t hsize)
static void	midequalizer8 (const uint8_t *in0, const uint8_t *in1, uint8_t *dst, ptrdiff_t linesize1, ptrdiff_t linesize2, ptrdiff_t dlinesize, int w0, int h0, int w1, int h1, float *histogram1, float *histogram2, unsigned *cchange, size_t hsize)
static void	midequalizer16 (const uint8_t *in0, const uint8_t *in1, uint8_t *dst, ptrdiff_t linesize1, ptrdiff_t linesize2, ptrdiff_t dlinesize, int w0, int h0, int w1, int h1, float *histogram1, float *histogram2, unsigned *cchange, size_t hsize)
static int	config_input0 (AVFilterLink *inlink)
static int	config_input1 (AVFilterLink *inlink)
static int	config_output (AVFilterLink *outlink)
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	midequalizer_options []
static const AVFilterPad	midequalizer_inputs []
static const AVFilterPad	midequalizer_outputs []
AVFilter	ff_vf_midequalizer

Macro Definition Documentation

#define OFFSET

(

x

)

offsetof(MidEqualizerContext, x)

Definition at line 50 of file vf_midequalizer.c.

#define FLAGS   AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM

Definition at line 51 of file vf_midequalizer.c.

Function Documentation

AVFILTER_DEFINE_CLASS

(

midequalizer

)

static int query_formats ( AVFilterContext *  ctx )

static

Definition at line 60 of file vf_midequalizer.c.

static int process_frame ( FFFrameSync *  fs )

static

Definition at line 84 of file vf_midequalizer.c.

Referenced by config_output().

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

static

Definition at line 130 of file vf_midequalizer.c.

Referenced by midequalizer8().

static void compute_histogram16 ( const uint16_t *  src, ptrdiff_t  linesize, int  w, int  h, float *  histogram, size_t  hsize  )

static

Definition at line 151 of file vf_midequalizer.c.

Referenced by midequalizer16().

static void compute_contrast_change ( float *  histogram1, float *  histogram2, unsigned *  cchange, size_t  hsize  )

static

Definition at line 172 of file vf_midequalizer.c.

Referenced by midequalizer16(), and midequalizer8().

static void midequalizer8 ( const uint8_t *  in0, const uint8_t *  in1, uint8_t *  dst, ptrdiff_t  linesize1, ptrdiff_t  linesize2, ptrdiff_t  dlinesize, int  w0, int  h0, int  w1, int  h1, float *  histogram1, float *  histogram2, unsigned *  cchange, size_t  hsize  )

static

Definition at line 186 of file vf_midequalizer.c.

Referenced by config_input0().

static void midequalizer16 ( const uint8_t *  in0, const uint8_t *  in1, uint8_t *  dst, ptrdiff_t  linesize1, ptrdiff_t  linesize2, ptrdiff_t  dlinesize, int  w0, int  h0, int  w1, int  h1, float *  histogram1, float *  histogram2, unsigned *  cchange, size_t  hsize  )

static

Definition at line 212 of file vf_midequalizer.c.

Referenced by config_input0().

static int config_input0 ( AVFilterLink *  inlink )

static

Definition at line 240 of file vf_midequalizer.c.

static int config_input1 ( AVFilterLink *  inlink )

static

Definition at line 274 of file vf_midequalizer.c.

static int config_output ( AVFilterLink *  outlink )

static

Definition at line 294 of file vf_midequalizer.c.

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

static

Definition at line 332 of file vf_midequalizer.c.

static int request_frame ( AVFilterLink *  outlink )

static

Definition at line 338 of file vf_midequalizer.c.

static av_cold void uninit ( AVFilterContext *  ctx )

static

Definition at line 344 of file vf_midequalizer.c.

Variable Documentation

const AVOption midequalizer_options[]

static

Initial value:

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

Definition at line 53 of file vf_midequalizer.c.

const AVFilterPad midequalizer_inputs[]

static

Initial value:

= {
    {
        .name         = "in0",
        .type         = AVMEDIA_TYPE_VIDEO,
        .filter_frame = filter_frame,
        .config_props = config_input0,
    },
    {
        .name         = "in1",
        .type         = AVMEDIA_TYPE_VIDEO,
        .filter_frame = filter_frame,
        .config_props = config_input1,
    },
    { NULL }
}

Definition at line 354 of file vf_midequalizer.c.

const AVFilterPad midequalizer_outputs[]

static

Initial value:

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

Definition at line 370 of file vf_midequalizer.c.

AVFilter ff_vf_midequalizer

Initial value:

= {
    .name          = "midequalizer",
    .description   = NULL_IF_CONFIG_SMALL("Apply Midway Equalization."),
    .priv_size     = sizeof(MidEqualizerContext),
    .uninit        = uninit,
    .query_formats = query_formats,
    .inputs        = midequalizer_inputs,
    .outputs       = midequalizer_outputs,
    .priv_class    = &midequalizer_class,
    .flags         = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL,
}

Definition at line 380 of file vf_midequalizer.c.