vf_convolve.c File Reference

#include "libavutil/imgutils.h"
#include "libavutil/opt.h"
#include "libavutil/pixdesc.h"
#include "libavcodec/avfft.h"
#include "avfilter.h"
#include "formats.h"
#include "framesync.h"
#include "internal.h"
#include "video.h"

Go to the source code of this file.

Data Structures
struct	ConvolveContext

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

Functions
	FRAMESYNC_DEFINE_CLASS (convolve, ConvolveContext, fs)
static int	query_formats (AVFilterContext *ctx)
static int	config_input_main (AVFilterLink *inlink)
static int	config_input_impulse (AVFilterLink *inlink)
static void	fft_horizontal (ConvolveContext *s, FFTComplex *fft_hdata, AVFrame *in, int w, int h, int n, int plane, float scale)
static void	fft_vertical (ConvolveContext *s, FFTComplex *fft_hdata, FFTComplex *fft_vdata, int n, int plane)
static void	ifft_vertical (ConvolveContext *s, int n, int plane)
static void	ifft_horizontal (ConvolveContext *s, AVFrame *out, int w, int h, int n, int plane)
static int	do_convolve (FFFrameSync *fs)
static int	config_output (AVFilterLink *outlink)
static int	activate (AVFilterContext *ctx)
static av_cold void	uninit (AVFilterContext *ctx)

Variables
static const AVOption	convolve_options []
static const AVFilterPad	convolve_inputs []
static const AVFilterPad	convolve_outputs []
AVFilter	ff_vf_convolve

Macro Definition Documentation

#define OFFSET

(

x

)

offsetof(ConvolveContext, x)

Definition at line 56 of file vf_convolve.c.

#define FLAGS   AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM

Definition at line 57 of file vf_convolve.c.

Function Documentation

FRAMESYNC_DEFINE_CLASS	(	convolve	,
		ConvolveContext	,
		fs
	)

static int query_formats ( AVFilterContext *  ctx )

static

Definition at line 69 of file vf_convolve.c.

static int config_input_main ( AVFilterLink *  inlink )

static

Definition at line 98 of file vf_convolve.c.

static int config_input_impulse ( AVFilterLink *  inlink )

static

Definition at line 138 of file vf_convolve.c.

static void fft_horizontal ( ConvolveContext *  s, FFTComplex *  fft_hdata, AVFrame *  in, int  w, int  h, int  n, int  plane, float  scale  )

static

Definition at line 155 of file vf_convolve.c.

Referenced by do_convolve().

static void fft_vertical ( ConvolveContext *  s, FFTComplex *  fft_hdata, FFTComplex *  fft_vdata, int  n, int  plane  )

static

Definition at line 195 of file vf_convolve.c.

Referenced by do_convolve().

static void ifft_vertical ( ConvolveContext *  s, int  n, int  plane  )

static

Definition at line 214 of file vf_convolve.c.

Referenced by do_convolve().

static void ifft_horizontal ( ConvolveContext *  s, AVFrame *  out, int  w, int  h, int  n, int  plane  )

static

Definition at line 228 of file vf_convolve.c.

Referenced by do_convolve().

static int do_convolve ( FFFrameSync *  fs )

static

Definition at line 257 of file vf_convolve.c.

Referenced by config_output().

static int config_output ( AVFilterLink *  outlink )

static

Definition at line 331 of file vf_convolve.c.

static int activate ( AVFilterContext *  ctx )

static

Definition at line 361 of file vf_convolve.c.

static av_cold void uninit ( AVFilterContext *  ctx )

static

Definition at line 367 of file vf_convolve.c.

Variable Documentation

const AVOption convolve_options[]

static

Initial value:

= {
    { "planes",  "set planes to convolve",                  OFFSET(planes),   AV_OPT_TYPE_INT,   {.i64=7}, 0, 15, FLAGS },
    { "impulse", "when to process impulses",                OFFSET(impulse),  AV_OPT_TYPE_INT,   {.i64=1}, 0,  1, FLAGS, "impulse" },
    {   "first", "process only first impulse, ignore rest", 0,                AV_OPT_TYPE_CONST, {.i64=0}, 0,  0, FLAGS, "impulse" },
    {   "all",   "process all impulses",                    0,                AV_OPT_TYPE_CONST, {.i64=1}, 0,  0, FLAGS, "impulse" },
    { NULL },
}

Definition at line 59 of file vf_convolve.c.

const AVFilterPad convolve_inputs[]

static

Initial value:

= {
    {
        .name          = "main",
        .type          = AVMEDIA_TYPE_VIDEO,
        .config_props  = config_input_main,
    },{
        .name          = "impulse",
        .type          = AVMEDIA_TYPE_VIDEO,
        .config_props  = config_input_impulse,
    },
    { NULL }
}

Definition at line 384 of file vf_convolve.c.

const AVFilterPad convolve_outputs[]

static

Initial value:

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

Definition at line 397 of file vf_convolve.c.

AVFilter ff_vf_convolve

Initial value:

= {
    .name          = "convolve",
    .description   = NULL_IF_CONFIG_SMALL("Convolve first video stream with second video stream."),
    .preinit       = convolve_framesync_preinit,
    .uninit        = uninit,
    .query_formats = query_formats,
    .activate      = activate,
    .priv_size     = sizeof(ConvolveContext),
    .priv_class    = &convolve_class,
    .inputs        = convolve_inputs,
    .outputs       = convolve_outputs,
    .flags         = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL,
}

Definition at line 406 of file vf_convolve.c.