vf_colormap.c File Reference

#include "libavutil/attributes.h"
#include "libavutil/avassert.h"
#include "libavutil/common.h"
#include "libavutil/opt.h"
#include "avfilter.h"
#include "filters.h"
#include "framesync.h"
#include "video.h"

Go to the source code of this file.

Data Structures
struct	ColorMapContext
struct	ThreadData
	Used for passing data between threads. More...

Macros
#define	MAX_SIZE   64
#define	OFFSET(x)   offsetof(ColorMapContext, x)
#define	FLAGS   AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_RUNTIME_PARAM
#define	P2(x)   ((x)*(x))

Enumerations
enum	KernelType { EUCLIDEAN, WEUCLIDEAN, NB_KERNELS }

Functions
static int	gauss_make_triangular (double *A, int *p, int n)
static void	gauss_solve_triangular (const double *A, const int *p, double *b, int n)
static int	gauss_solve (double *A, double *b, int n)
static float	euclidean_kernel (const float *x, const float *y)
static float	weuclidean_kernel (const float *x, const float *y)
static void	build_map (AVFilterContext *ctx)
static int	colormap_slice (AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
static int	import_map (AVFilterLink *inlink, AVFrame *in)
static int	process_frame (FFFrameSync *fs)
static int	config_output (AVFilterLink *outlink)
static int	activate (AVFilterContext *ctx)
static av_cold void	uninit (AVFilterContext *ctx)
	AVFILTER_DEFINE_CLASS (colormap)

Variables
static const AVOption	colormap_options []
static const AVFilterPad	inputs []
static const AVFilterPad	outputs []
const AVFilter	ff_vf_colormap

Detailed Description

Compute a look-up table from map of colors.

Definition in file vf_colormap.c.

Macro Definition Documentation

MAX_SIZE

#define MAX_SIZE   64

Definition at line 35 of file vf_colormap.c.

OFFSET

#define OFFSET

(

x

)

offsetof(ColorMapContext, x)

Definition at line 67 of file vf_colormap.c.

FLAGS

#define FLAGS   AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_RUNTIME_PARAM

Definition at line 68 of file vf_colormap.c.

P2

#define P2

(

x

)

((x)*(x))

Definition at line 150 of file vf_colormap.c.

Enumeration Type Documentation

KernelType

enum KernelType

Enumerator
EUCLIDEAN
WEUCLIDEAN
NB_KERNELS

Definition at line 37 of file vf_colormap.c.

Function Documentation

gauss_make_triangular()

static int gauss_make_triangular ( double *  A, int *  p, int  n  )

static

Definition at line 82 of file vf_colormap.c.

Referenced by build_map(), and gauss_solve().

gauss_solve_triangular()

static void gauss_solve_triangular ( const double *  A, const int *  p, double *  b, int  n  )

static

Definition at line 116 of file vf_colormap.c.

Referenced by build_map(), and gauss_solve().

gauss_solve()

static int gauss_solve ( double *  A, double *  b, int  n  )

static

Definition at line 136 of file vf_colormap.c.

Referenced by build_map().

euclidean_kernel()

static float euclidean_kernel ( const float *  x, const float *  y  )

static

Definition at line 152 of file vf_colormap.c.

Referenced by process_frame().

weuclidean_kernel()

static float weuclidean_kernel ( const float *  x, const float *  y  )

static

Definition at line 160 of file vf_colormap.c.

Referenced by process_frame().

build_map()

static void build_map ( AVFilterContext *  ctx )

static

Definition at line 169 of file vf_colormap.c.

Referenced by process_frame().

colormap_slice()

static int colormap_slice ( AVFilterContext *  ctx, void *  arg, int  jobnr, int  nb_jobs  )

static

Definition at line 303 of file vf_colormap.c.

Referenced by process_frame().

import_map()

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

static

Definition at line 375 of file vf_colormap.c.

Referenced by process_frame().

process_frame()

static int process_frame ( FFFrameSync *  fs )

static

Definition at line 422 of file vf_colormap.c.

Referenced by config_output().

config_output()

static int config_output ( AVFilterLink *  outlink )

static

Definition at line 483 of file vf_colormap.c.

activate()

static int activate ( AVFilterContext *  ctx )

static

Definition at line 526 of file vf_colormap.c.

uninit()

static av_cold void uninit ( AVFilterContext *  ctx )

static

Definition at line 532 of file vf_colormap.c.

AVFILTER_DEFINE_CLASS()

AVFILTER_DEFINE_CLASS

(

colormap

)

Variable Documentation

colormap_options

const AVOption colormap_options[]

static

Initial value:

= {
    { "patch_size", "set patch size", OFFSET(w), AV_OPT_TYPE_IMAGE_SIZE, {.str = "64x64"}, 0, 0, FLAGS },
    { "nb_patches", "set number of patches", OFFSET(size), AV_OPT_TYPE_INT, {.i64 = 0}, 0, MAX_SIZE, FLAGS },
    { "type", "set the target type used",  OFFSET(target_type), AV_OPT_TYPE_INT, {.i64=1}, 0, 1, FLAGS, .unit = "type" },
    {   "relative", "the target colors are relative", 0, AV_OPT_TYPE_CONST, {.i64=0}, 0, 1, FLAGS, .unit = "type" },
    {   "absolute", "the target colors are absolute", 0, AV_OPT_TYPE_CONST, {.i64=1}, 0, 1, FLAGS, .unit = "type" },
    { "kernel", "set the kernel used for measuring color difference",  OFFSET(kernel_type), AV_OPT_TYPE_INT, {.i64=0}, 0, NB_KERNELS-1, FLAGS, .unit = "kernel" },
    {   "euclidean",   "square root of sum of squared differences",         0, AV_OPT_TYPE_CONST, {.i64=EUCLIDEAN},   0, 0, FLAGS, .unit = "kernel" },
    {   "weuclidean",  "weighted square root of sum of squared differences",0, AV_OPT_TYPE_CONST, {.i64=WEUCLIDEAN},  0, 0, FLAGS, .unit = "kernel" },
    { NULL }
}

Definition at line 70 of file vf_colormap.c.

inputs

const AVFilterPad inputs[]

static

Initial value:

= {
    {
        .name = "default",
        .type = AVMEDIA_TYPE_VIDEO,
    },
    {
        .name = "source",
        .type = AVMEDIA_TYPE_VIDEO,
    },
    {
        .name = "target",
        .type = AVMEDIA_TYPE_VIDEO,
    },
}

Definition at line 539 of file vf_colormap.c.

outputs

const AVFilterPad outputs[]

static

Initial value:

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

Definition at line 554 of file vf_colormap.c.

ff_vf_colormap

const AVFilter ff_vf_colormap

Initial value:

= {
    .name          = "colormap",
    .description   = NULL_IF_CONFIG_SMALL("Apply custom Color Maps to video stream."),
    .priv_class    = &colormap_class,
    .priv_size     = sizeof(ColorMapContext),
    .activate      = activate,
    FILTER_INPUTS(inputs),
    FILTER_OUTPUTS(outputs),
    FILTER_PIXFMTS(AV_PIX_FMT_GBRPF32, AV_PIX_FMT_GBRAPF32),
    .flags         = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL |
                     AVFILTER_FLAG_SLICE_THREADS,
    .process_command = ff_filter_process_command,
    .uninit        = uninit,
}

Definition at line 564 of file vf_colormap.c.