vf_amplify.c File Reference

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

Go to the source code of this file.

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

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

Functions
static int	query_formats (AVFilterContext *ctx)
static av_cold int	init (AVFilterContext *ctx)
static int	amplify_frame (AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
static int	config_output (AVFilterLink *outlink)
static av_cold void	uninit (AVFilterContext *ctx)
static int	filter_frame (AVFilterLink *inlink, AVFrame *in)
	AVFILTER_DEFINE_CLASS (amplify)

Variables
static const AVOption	amplify_options []
static const AVFilterPad	inputs []
static const AVFilterPad	outputs []
AVFilter	ff_vf_amplify

Macro Definition Documentation

OFFSET

#define OFFSET

(

x

)

offsetof(AmplifyContext, x)

Definition at line 269 of file vf_amplify.c.

FLAGS

#define FLAGS   AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_FILTERING_PARAM

Definition at line 270 of file vf_amplify.c.

Function Documentation

query_formats()

static int query_formats ( AVFilterContext *  ctx )

static

Definition at line 53 of file vf_amplify.c.

init()

static av_cold int init ( AVFilterContext *  ctx )

static

Definition at line 82 of file vf_amplify.c.

amplify_frame()

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

static

Definition at line 99 of file vf_amplify.c.

Referenced by filter_frame().

config_output()

static int config_output ( AVFilterLink *  outlink )

static

Definition at line 205 of file vf_amplify.c.

uninit()

static av_cold void uninit ( AVFilterContext *  ctx )

static

Definition at line 227 of file vf_amplify.c.

filter_frame()

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

static

Definition at line 239 of file vf_amplify.c.

AVFILTER_DEFINE_CLASS()

AVFILTER_DEFINE_CLASS

(

amplify

)

Variable Documentation

amplify_options

const AVOption amplify_options[]

static

Initial value:

= {
    { "radius", "set radius", OFFSET(radius), AV_OPT_TYPE_INT, {.i64=2}, 1, 63, .flags = FLAGS },
    { "factor", "set factor", OFFSET(factor), AV_OPT_TYPE_FLOAT, {.dbl=2}, 0, UINT16_MAX, .flags = FLAGS },
    { "threshold", "set threshold", OFFSET(threshold), AV_OPT_TYPE_FLOAT, {.dbl=10}, 0, UINT16_MAX, .flags = FLAGS },
    { "tolerance", "set tolerance", OFFSET(tolerance), AV_OPT_TYPE_FLOAT, {.dbl=0}, 0, UINT16_MAX, .flags = FLAGS },
    { "low", "set low limit for amplification", OFFSET(llimit), AV_OPT_TYPE_INT, {.i64=UINT16_MAX}, 0, UINT16_MAX, .flags = FLAGS },
    { "high", "set high limit for amplification", OFFSET(hlimit), AV_OPT_TYPE_INT, {.i64=UINT16_MAX}, 0, UINT16_MAX, .flags = FLAGS },
    { "planes", "set what planes to filter", OFFSET(planes), AV_OPT_TYPE_FLAGS, {.i64=7},    0, 15,  FLAGS },
    { NULL },
}

Definition at line 272 of file vf_amplify.c.

inputs

const AVFilterPad inputs[]

static

Initial value:

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

Definition at line 283 of file vf_amplify.c.

outputs

const AVFilterPad outputs[]

static

Initial value:

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

Definition at line 292 of file vf_amplify.c.

ff_vf_amplify

AVFilter ff_vf_amplify

Initial value:

= {
    .name          = "amplify",
    .description   = NULL_IF_CONFIG_SMALL("Amplify changes between successive video frames."),
    .priv_size     = sizeof(AmplifyContext),
    .priv_class    = &amplify_class,
    .query_formats = query_formats,
    .outputs       = outputs,
    .inputs        = inputs,
    .init          = init,
    .uninit        = uninit,
    .flags         = AVFILTER_FLAG_SLICE_THREADS,
}

Definition at line 303 of file vf_amplify.c.