vf_signalstats.c File Reference

#include "libavutil/intreadwrite.h"
#include "libavutil/opt.h"
#include "libavutil/pixdesc.h"
#include "internal.h"

Go to the source code of this file.

Data Structures
struct	SignalstatsContext
struct	ThreadData
struct	ThreadDataHueSatMetrics

Macros
#define	OFFSET(x)   offsetof(SignalstatsContext, x)
#define	FLAGS   AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
#define	FILTER(i, j)
#define	FILTER3(j)   (FILTER(-1, j) && FILTER(0, j) && FILTER(1, j))
#define	VREP_START   4
#define	DEPTH   256
#define	SET_META(key, fmt, val)

Enumerations
enum	FilterMode {   FILTER_8TAP_SMOOTH, FILTER_8TAP_REGULAR, FILTER_8TAP_SHARP, FILTER_BILINEAR,   N_FILTERS, FILTER_SWITCHABLE = N_FILTERS, MODE_WIRES, MODE_COLORMIX,   NB_MODE, MODE_NONE, MODE_INTERLEAVE, MODE_DEINTERLEAVE,   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 int	query_formats (AVFilterContext *ctx)
static AVFrame *	alloc_frame (enum AVPixelFormat pixfmt, int w, int h)
static int	config_props (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_frame8 (AVFilterLink *link, AVFrame *in)
static int	filter_frame16 (AVFilterLink *link, AVFrame *in)
static int	filter_frame (AVFilterLink *link, AVFrame *in)

Variables
static const AVOption	signalstats_options []
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 []
AVFilter	ff_vf_signalstats

Macro Definition Documentation

OFFSET

#define OFFSET

(

x

)

offsetof(SignalstatsContext, x)

Definition at line 69 of file vf_signalstats.c.

FLAGS

#define FLAGS   AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM

Definition at line 70 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

)

(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 383 of file vf_signalstats.c.

Referenced by filter16_vrep(), and filter8_vrep().

DEPTH

#define DEPTH   256

Definition at line 465 of file vf_signalstats.c.

Referenced by filter_frame8().

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_frame16(), and filter_frame8().

Enumeration Type Documentation

FilterMode

enum FilterMode

Enumerator
FILTER_8TAP_SMOOTH
FILTER_8TAP_REGULAR
FILTER_8TAP_SHARP
FILTER_BILINEAR
N_FILTERS
FILTER_SWITCHABLE
MODE_WIRES
MODE_COLORMIX
NB_MODE
MODE_NONE
MODE_INTERLEAVE
MODE_DEINTERLEAVE
FILTER_NONE
FILTER_TOUT
FILTER_VREP
FILTER_BRNG
FILT_NUMB

Definition at line 28 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 88 of file vf_signalstats.c.

uninit()

static av_cold void uninit ( AVFilterContext *  ctx )

static

Definition at line 105 of file vf_signalstats.c.

query_formats()

static int query_formats ( AVFilterContext *  ctx )

static

Definition at line 118 of file vf_signalstats.c.

alloc_frame()

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

static

Definition at line 142 of file vf_signalstats.c.

Referenced by config_props().

config_props()

static int config_props ( AVFilterLink *  outlink )

static

Definition at line 160 of file vf_signalstats.c.

burn_frame8()

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

static

Definition at line 201 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 210 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 220 of file vf_signalstats.c.

filter16_brng()

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

static

Definition at line 254 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 289 of file vf_signalstats.c.

filter8_tout()

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

static

Definition at line 294 of file vf_signalstats.c.

filter16_tout()

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

static

Definition at line 342 of file vf_signalstats.c.

filter8_vrep()

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

static

Definition at line 385 of file vf_signalstats.c.

filter16_vrep()

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

static

Definition at line 419 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 467 of file vf_signalstats.c.

Referenced by filter_frame8().

compute_sat_hue_metrics16()

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

static

Definition at line 505 of file vf_signalstats.c.

Referenced by filter_frame16().

compute_bit_depth()

static unsigned compute_bit_depth ( uint16_t  mask )

static

Definition at line 544 of file vf_signalstats.c.

Referenced by filter_frame16(), and filter_frame8().

filter_frame8()

static int filter_frame8 ( AVFilterLink *  link, AVFrame *  in  )

static

Definition at line 549 of file vf_signalstats.c.

Referenced by filter_frame().

filter_frame16()

static int filter_frame16 ( AVFilterLink *  link, AVFrame *  in  )

static

Definition at line 767 of file vf_signalstats.c.

Referenced by filter_frame().

filter_frame()

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

static

Definition at line 984 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, "filters"},
        {"tout", "analyze pixels for temporal outliers",                0, AV_OPT_TYPE_CONST, {.i64=1<<FILTER_TOUT}, 0, 0, FLAGS, "filters"},
        {"vrep", "analyze video lines for vertical line repetition",    0, AV_OPT_TYPE_CONST, {.i64=1<<FILTER_VREP}, 0, 0, FLAGS, "filters"},
        {"brng", "analyze for pixels outside of broadcast range",       0, AV_OPT_TYPE_CONST, {.i64=1<<FILTER_BRNG}, 0, 0, FLAGS, "filters"},
    {"out", "set video filter", OFFSET(outfilter), AV_OPT_TYPE_INT, {.i64=FILTER_NONE}, -1, FILT_NUMB-1, FLAGS, "out"},
        {"tout", "highlight pixels that depict temporal outliers",              0, AV_OPT_TYPE_CONST, {.i64=FILTER_TOUT}, 0, 0, FLAGS, "out"},
        {"vrep", "highlight video lines that depict vertical line repetition",  0, AV_OPT_TYPE_CONST, {.i64=FILTER_VREP}, 0, 0, FLAGS, "out"},
        {"brng", "highlight pixels that are outside of broadcast range",        0, AV_OPT_TYPE_CONST, {.i64=FILTER_BRNG}, 0, 0, FLAGS, "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 72 of file vf_signalstats.c.

name

const char* name

Definition at line 455 of file vf_signalstats.c.

Referenced by filter_frame16(), and filter_frame8().

process8

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

Definition at line 456 of file vf_signalstats.c.

Referenced by filter_frame8().

process16

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

Definition at line 457 of file vf_signalstats.c.

Referenced by filter_frame16().

filters_def

const { ... } filters_def[]

Initial value:

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

Referenced by filter_frame16(), and filter_frame8().

signalstats_inputs

const AVFilterPad signalstats_inputs[]

static

Initial value:

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

Definition at line 995 of file vf_signalstats.c.

signalstats_outputs

const AVFilterPad signalstats_outputs[]

static

Initial value:

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

Definition at line 1004 of file vf_signalstats.c.

ff_vf_signalstats

AVFilter ff_vf_signalstats

Initial value:

= {
    .name          = "signalstats",
    .description   = "Generate statistics from video analysis.",
    .init          = init,
    .uninit        = uninit,
    .query_formats = query_formats,
    .priv_size     = sizeof(SignalstatsContext),
    .inputs        = signalstats_inputs,
    .outputs       = signalstats_outputs,
    .priv_class    = &signalstats_class,
    .flags         = AVFILTER_FLAG_SLICE_THREADS,
}

Definition at line 1013 of file vf_signalstats.c.