vf_amplify.c File Reference

#include "libavutil/imgutils.h"
#include "libavutil/mem.h"
#include "libavutil/opt.h"
#include "libavutil/pixdesc.h"
#include "avfilter.h"
#include "filters.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	AMPLIFY_SLICE(type, stype, clip)
#define	CLIP8(x, depth)   av_clip_uint8(lrintf(x))
#define	CLIP16(x, depth)   av_clip_uintp2_c(lrintf(x), depth)
#define	NOP(x, depth)   (x)
#define	OFFSET(x)   offsetof(AmplifyContext, x)
#define	FLAGS   AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_FILTERING_PARAM
#define	VFT   AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_FILTERING_PARAM | AV_OPT_FLAG_RUNTIME_PARAM

Functions
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 enum AVPixelFormat	pixel_fmts []
static const AVOption	amplify_options []
static const AVFilterPad	inputs []
static const AVFilterPad	outputs []
const AVFilter	ff_vf_amplify

Macro Definition Documentation

AMPLIFY_SLICE

#define AMPLIFY_SLICE	(		type,
			stype,
			clip
	)

Definition at line 97 of file vf_amplify.c.

CLIP8

#define CLIP8	(		x,
			depth
	)		av_clip_uint8(lrintf(x))

Definition at line 140 of file vf_amplify.c.

CLIP16

#define CLIP16	(		x,
			depth
	)		av_clip_uintp2_c(lrintf(x), depth)

Definition at line 141 of file vf_amplify.c.

NOP

#define NOP	(		x,
			depth
	)		(x)

Definition at line 142 of file vf_amplify.c.

OFFSET

#define OFFSET

(

x

)

offsetof(AmplifyContext, x)

Definition at line 241 of file vf_amplify.c.

FLAGS

#define FLAGS   AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_FILTERING_PARAM

Definition at line 242 of file vf_amplify.c.

VFT

#define VFT   AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_FILTERING_PARAM | AV_OPT_FLAG_RUNTIME_PARAM

Definition at line 243 of file vf_amplify.c.

Function Documentation

init()

static av_cold int init ( AVFilterContext *  ctx )

static

Definition at line 80 of file vf_amplify.c.

amplify_frame()

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

static

Definition at line 144 of file vf_amplify.c.

Referenced by filter_frame().

config_output()

static int config_output ( AVFilterLink *  outlink )

static

Definition at line 169 of file vf_amplify.c.

uninit()

static av_cold void uninit ( AVFilterContext *  ctx )

static

Definition at line 191 of file vf_amplify.c.

filter_frame()

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

static

Definition at line 203 of file vf_amplify.c.

AVFILTER_DEFINE_CLASS()

AVFILTER_DEFINE_CLASS

(

amplify

)

Variable Documentation

pixel_fmts

enum AVPixelFormat pixel_fmts[]

static

Initial value:

= {
    AV_PIX_FMT_GRAY8, AV_PIX_FMT_GRAY9,
    AV_PIX_FMT_GRAY10, AV_PIX_FMT_GRAY12, AV_PIX_FMT_GRAY14,
    AV_PIX_FMT_GRAY16, AV_PIX_FMT_GRAYF32,
    AV_PIX_FMT_YUV410P, AV_PIX_FMT_YUV411P,
    AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV422P,
    AV_PIX_FMT_YUV440P, AV_PIX_FMT_YUV444P,
    AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ422P,
    AV_PIX_FMT_YUVJ440P, AV_PIX_FMT_YUVJ444P,
    AV_PIX_FMT_YUVJ411P,
    AV_PIX_FMT_YUV420P9, AV_PIX_FMT_YUV422P9, AV_PIX_FMT_YUV444P9,
    AV_PIX_FMT_YUV420P10, AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUV444P10,
    AV_PIX_FMT_YUV440P10,
    AV_PIX_FMT_YUV444P12, AV_PIX_FMT_YUV422P12, AV_PIX_FMT_YUV420P12,
    AV_PIX_FMT_YUV440P12,
    AV_PIX_FMT_YUV444P14, AV_PIX_FMT_YUV422P14, AV_PIX_FMT_YUV420P14,
    AV_PIX_FMT_YUV420P16, AV_PIX_FMT_YUV422P16, AV_PIX_FMT_YUV444P16,
    AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRP9, AV_PIX_FMT_GBRP10,
    AV_PIX_FMT_GBRP12, AV_PIX_FMT_GBRP14, AV_PIX_FMT_GBRP16,
    AV_PIX_FMT_YUVA420P,  AV_PIX_FMT_YUVA422P,   AV_PIX_FMT_YUVA444P,
    AV_PIX_FMT_YUVA444P9, AV_PIX_FMT_YUVA444P10, AV_PIX_FMT_YUVA444P12, AV_PIX_FMT_YUVA444P16,
    AV_PIX_FMT_YUVA422P9, AV_PIX_FMT_YUVA422P10, AV_PIX_FMT_YUVA422P12, AV_PIX_FMT_YUVA422P16,
    AV_PIX_FMT_YUVA420P9, AV_PIX_FMT_YUVA420P10, AV_PIX_FMT_YUVA420P16,
    AV_PIX_FMT_GBRAP,     AV_PIX_FMT_GBRAP10,    AV_PIX_FMT_GBRAP12,    AV_PIX_FMT_GBRAP16,
    AV_PIX_FMT_GBRPF32, AV_PIX_FMT_GBRAPF32,
    AV_PIX_FMT_NONE
}

Definition at line 52 of file vf_amplify.c.

Referenced by common_init(), and query_formats().

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

Definition at line 245 of file vf_amplify.c.

inputs

const AVFilterPad inputs[]

static

Initial value:

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

Definition at line 256 of file vf_amplify.c.

outputs

const AVFilterPad outputs[]

static

Initial value:

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

Definition at line 264 of file vf_amplify.c.

ff_vf_amplify

const 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,
    FILTER_OUTPUTS(outputs),
    FILTER_INPUTS(inputs),
    FILTER_PIXFMTS_ARRAY(pixel_fmts),
    .init          = init,
    .uninit        = uninit,
    .flags         = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL | AVFILTER_FLAG_SLICE_THREADS,
    .process_command = ff_filter_process_command,
}

Definition at line 274 of file vf_amplify.c.