vf_signalstats.c File Reference

#include "libavutil/intreadwrite.h"
#include "libavutil/mem.h"
#include "libavutil/opt.h"
#include "libavutil/pixdesc.h"
#include "filters.h"

Go to the source code of this file.

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

Macros
#define	OFFSET(x)
#define	FLAGS   AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
#define	FILTER(i, j)
#define	FILTER3(j)
#define	VREP_START   4
#define	SET_META(key, fmt, val)

Enumerations
enum	FilterMode {   FILTER_NONE = -1 , FILTER_TOUT , FILTER_VREP , FILTER_BRNG ,   FILT_NUMB }

Functions
	AVFILTER_DEFINE_CLASS (signalstats)
static av_cold int	init (AVFilterContext *ctx)
static av_cold void	uninit (AVFilterContext *ctx)
static AVFrame *	alloc_frame (enum AVPixelFormat pixfmt, int w, int h)
static int	config_output (AVFilterLink *outlink)
static void	burn_frame8 (const SignalstatsContext *s, AVFrame *f, int x, int y)
static void	burn_frame16 (const SignalstatsContext *s, AVFrame *f, int x, int y)
static int	filter8_brng (AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
static int	filter16_brng (AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
static int	filter_tout_outlier (uint8_t x, uint8_t y, uint8_t z)
static int	filter8_tout (AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
static int	filter16_tout (AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
static int	filter8_vrep (AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
static int	filter16_vrep (AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
static int	compute_sat_hue_metrics8 (AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
static int	compute_sat_hue_metrics16 (AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
static unsigned	compute_bit_depth (uint16_t mask)
static int	filter_frame (AVFilterLink *link, AVFrame *in)

Variables
static const AVOption	signalstats_options []
static enum AVPixelFormat	pix_fmts []
struct {
const char *   name
int(*   process8 )(AVFilterContext *ctx, void       *arg, int jobnr, int nb_jobs)
int(*   process16 )(AVFilterContext *ctx, void       *arg, int jobnr, int nb_jobs)
}	filters_def []
static const AVFilterPad	signalstats_inputs []
static const AVFilterPad	signalstats_outputs []
const FFFilter	ff_vf_signalstats

Macro Definition Documentation

OFFSET

#define OFFSET

(

x

)

Value:

offsetof(SignalstatsContext, x)

Definition at line 71 of file vf_signalstats.c.

FLAGS

#define FLAGS   AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM

Definition at line 72 of file vf_signalstats.c.

FILTER

#define FILTER	(		i,
			j )

Value:

        filter_tout_outlier(p[(y-j) * lw + x + i], \
                            p[    y * lw + x + i], \
                            p[(y+j) * lw + x + i])

FILTER3

#define FILTER3

(

j

)

Value:

(FILTER(-1, j) && FILTER(0, j) && FILTER(1, j))

Referenced by filter16_tout(), and filter8_tout().

VREP_START

#define VREP_START   4

Definition at line 376 of file vf_signalstats.c.

Referenced by filter16_vrep(), and filter8_vrep().

SET_META

#define SET_META	(		key,
			fmt,
			val )

Value:

    do {                                \
    snprintf(metabuf, sizeof(metabuf), fmt, val);                   \
    av_dict_set(&out->metadata, "lavfi.signalstats." key, metabuf, 0);   \
} while (0)

Referenced by filter_frame().

Enumeration Type Documentation

FilterMode

enum FilterMode

Enumerator
FILTER_NONE
FILTER_TOUT
FILTER_VREP
FILTER_BRNG
FILT_NUMB

Definition at line 29 of file vf_signalstats.c.

Function Documentation

AVFILTER_DEFINE_CLASS()

AVFILTER_DEFINE_CLASS

(

signalstats

)

init()

static av_cold int init ( AVFilterContext * ctx )

static

Definition at line 90 of file vf_signalstats.c.

uninit()

static av_cold void uninit ( AVFilterContext * ctx )

static

Definition at line 107 of file vf_signalstats.c.

alloc_frame()

static AVFrame * alloc_frame ( enum AVPixelFormat pixfmt, int w, int h )

static

Definition at line 136 of file vf_signalstats.c.

Referenced by config_output().

config_output()

static int config_output ( AVFilterLink * outlink )

static

Definition at line 154 of file vf_signalstats.c.

burn_frame8()

static void burn_frame8 ( const SignalstatsContext * s, AVFrame * f, int x, int y )

static

Definition at line 194 of file vf_signalstats.c.

Referenced by filter8_brng(), filter8_tout(), and filter8_vrep().

burn_frame16()

static void burn_frame16 ( const SignalstatsContext * s, AVFrame * f, int x, int y )

static

Definition at line 203 of file vf_signalstats.c.

Referenced by filter16_brng(), filter16_tout(), and filter16_vrep().

filter8_brng()

static int filter8_brng ( AVFilterContext * ctx, void * arg, int jobnr, int nb_jobs )

static

Definition at line 213 of file vf_signalstats.c.

filter16_brng()

static int filter16_brng ( AVFilterContext * ctx, void * arg, int jobnr, int nb_jobs )

static

Definition at line 247 of file vf_signalstats.c.

filter_tout_outlier()

static int filter_tout_outlier ( uint8_t x, uint8_t y, uint8_t z )

static

Definition at line 282 of file vf_signalstats.c.

filter8_tout()

static int filter8_tout ( AVFilterContext * ctx, void * arg, int jobnr, int nb_jobs )

static

Definition at line 287 of file vf_signalstats.c.

filter16_tout()

static int filter16_tout ( AVFilterContext * ctx, void * arg, int jobnr, int nb_jobs )

static

Definition at line 335 of file vf_signalstats.c.

filter8_vrep()

static int filter8_vrep ( AVFilterContext * ctx, void * arg, int jobnr, int nb_jobs )

static

Definition at line 378 of file vf_signalstats.c.

filter16_vrep()

static int filter16_vrep ( AVFilterContext * ctx, void * arg, int jobnr, int nb_jobs )

static

Definition at line 412 of file vf_signalstats.c.

compute_sat_hue_metrics8()

static int compute_sat_hue_metrics8 ( AVFilterContext * ctx, void * arg, int jobnr, int nb_jobs )

static

Definition at line 458 of file vf_signalstats.c.

Referenced by filter_frame().

compute_sat_hue_metrics16()

static int compute_sat_hue_metrics16 ( AVFilterContext * ctx, void * arg, int jobnr, int nb_jobs )

static

Definition at line 496 of file vf_signalstats.c.

Referenced by filter_frame().

compute_bit_depth()

static unsigned compute_bit_depth ( uint16_t mask )

static

Definition at line 535 of file vf_signalstats.c.

Referenced by filter_frame().

filter_frame()

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

static

Definition at line 540 of file vf_signalstats.c.

Variable Documentation

signalstats_options

const AVOption signalstats_options[]

static

Initial value:

= {
    {"stat", "set statistics filters", OFFSET(filters), AV_OPT_TYPE_FLAGS, {.i64=0}, 0, INT_MAX, FLAGS, .unit = "filters"},
        {"tout", "analyze pixels for temporal outliers",                0, AV_OPT_TYPE_CONST, {.i64=1<<FILTER_TOUT}, 0, 0, FLAGS, .unit = "filters"},
        {"vrep", "analyze video lines for vertical line repetition",    0, AV_OPT_TYPE_CONST, {.i64=1<<FILTER_VREP}, 0, 0, FLAGS, .unit = "filters"},
        {"brng", "analyze for pixels outside of broadcast range",       0, AV_OPT_TYPE_CONST, {.i64=1<<FILTER_BRNG}, 0, 0, FLAGS, .unit = "filters"},
    {"out", "set video filter", OFFSET(outfilter), AV_OPT_TYPE_INT, {.i64=FILTER_NONE}, -1, FILT_NUMB-1, FLAGS, .unit = "out"},
        {"tout", "highlight pixels that depict temporal outliers",              0, AV_OPT_TYPE_CONST, {.i64=FILTER_TOUT}, 0, 0, FLAGS, .unit = "out"},
        {"vrep", "highlight video lines that depict vertical line repetition",  0, AV_OPT_TYPE_CONST, {.i64=FILTER_VREP}, 0, 0, FLAGS, .unit = "out"},
        {"brng", "highlight pixels that are outside of broadcast range",        0, AV_OPT_TYPE_CONST, {.i64=FILTER_BRNG}, 0, 0, FLAGS, .unit = "out"},
    {"c",     "set highlight color", OFFSET(rgba_color), AV_OPT_TYPE_COLOR, {.str="yellow"}, .flags=FLAGS},
    {"color", "set highlight color", OFFSET(rgba_color), AV_OPT_TYPE_COLOR, {.str="yellow"}, .flags=FLAGS},
    {NULL}
}

Definition at line 74 of file vf_signalstats.c.

pix_fmts

enum AVPixelFormat pix_fmts[]

static

Initial value:

= {
    AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV411P,
    AV_PIX_FMT_YUV440P,
    AV_PIX_FMT_YUVJ422P, AV_PIX_FMT_YUVJ444P, AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ411P,
    AV_PIX_FMT_YUVJ440P,
    AV_PIX_FMT_YUV444P9, AV_PIX_FMT_YUV422P9, AV_PIX_FMT_YUV420P9,
    AV_PIX_FMT_YUV444P10, AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUV420P10,
    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_YUV444P16, AV_PIX_FMT_YUV422P16, AV_PIX_FMT_YUV420P16,
    AV_PIX_FMT_NONE
}

Definition at line 121 of file vf_signalstats.c.

name

const char* name

Definition at line 448 of file vf_signalstats.c.

process8

int(* process8) (AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)	(	AVFilterContext *	ctx,
		void *	arg,
		int	jobnr,
		int	nb_jobs )

Definition at line 449 of file vf_signalstats.c.

Referenced by filter_frame().

process16

int(* process16) (AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)	(	AVFilterContext *	ctx,
		void *	arg,
		int	jobnr,
		int	nb_jobs )

Definition at line 450 of file vf_signalstats.c.

Referenced by filter_frame().

[struct]

const struct { ... } filters_def[]

Initial value:

= {
    {"TOUT", filter8_tout, filter16_tout},
    {"VREP", filter8_vrep, filter16_vrep},
    {"BRNG", filter8_brng, filter16_brng},
    {NULL}
}

Referenced by filter_frame().

signalstats_inputs

const AVFilterPad signalstats_inputs[]

static

Initial value:

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

Definition at line 814 of file vf_signalstats.c.

signalstats_outputs

const AVFilterPad signalstats_outputs[]

static

Initial value:

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

Definition at line 822 of file vf_signalstats.c.

ff_vf_signalstats

const FFFilter ff_vf_signalstats

Initial value:

= {
    .p.name        = "signalstats",
    .p.description = "Generate statistics from video analysis.",
    .p.priv_class  = &signalstats_class,
    .p.flags       = AVFILTER_FLAG_SLICE_THREADS,
    .init          = init,
    .uninit        = uninit,
    .priv_size     = sizeof(SignalstatsContext),
    FILTER_INPUTS(signalstats_inputs),
    FILTER_OUTPUTS(signalstats_outputs),
    FILTER_PIXFMTS_ARRAY(pix_fmts),
}

Definition at line 830 of file vf_signalstats.c.