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

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, FILTER_SWITCHABLE, 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_frame (const SignalstatsContext s, AVFrame f, int x, int y)

static int	filter_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	filter_tout (AVFilterContext ctx, void arg, int jobnr, int nb_jobs)

static int	filter_vrep (AVFilterContext ctx, void arg, int jobnr, int nb_jobs)

static int	compute_sat_hue_metrics (AVFilterContext ctx, void arg, int jobnr, int nb_jobs)

static int	filter_frame (AVFilterLink link, AVFrame in)

Variables
static const AVOption	signalstats_options []

struct {
const char * name

int(* process )(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

#define OFFSET ( x ) offsetof(SignalstatsContext, x)

Definition at line 65 of file vf_signalstats.c.

#define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM

Definition at line 66 of file vf_signalstats.c.

#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])

#define FILTER3 ( j ) (FILTER(-1, j) && FILTER(0, j) && FILTER(1, j))

Referenced by filter_tout().

#define VREP_START 4

Definition at line 268 of file vf_signalstats.c.

Referenced by filter_vrep().

#define DEPTH 256

Definition at line 314 of file vf_signalstats.c.

Referenced by filter_frame().

#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)

Enumeration Type Documentation

enum FilterMode

Enumerator:

FILTER_8TAP_SMOOTH
FILTER_8TAP_REGULAR
FILTER_8TAP_SHARP
FILTER_BILINEAR
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 27 of file vf_signalstats.c.

Function Documentation

AVFILTER_DEFINE_CLASS ( signalstats )

static av_cold int init ( AVFilterContext * ctx )

static

Definition at line 84 of file vf_signalstats.c.

static av_cold void uninit ( AVFilterContext * ctx )

static

Definition at line 101 of file vf_signalstats.c.

static int query_formats ( AVFilterContext * ctx )

static

Definition at line 110 of file vf_signalstats.c.

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

static

Definition at line 125 of file vf_signalstats.c.

Referenced by config_props().

static int config_props ( AVFilterLink * outlink )

static

Definition at line 141 of file vf_signalstats.c.

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

static

Definition at line 172 of file vf_signalstats.c.

Referenced by filter_brng(), filter_tout(), and filter_vrep().

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

static

Definition at line 181 of file vf_signalstats.c.

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

static

Definition at line 215 of file vf_signalstats.c.

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

static

Definition at line 220 of file vf_signalstats.c.

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

static

Definition at line 270 of file vf_signalstats.c.

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

static

Definition at line 316 of file vf_signalstats.c.

Referenced by filter_frame().

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

static

Definition at line 354 of file vf_signalstats.c.

Variable Documentation

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 68 of file vf_signalstats.c.

const char* name

Definition at line 305 of file vf_signalstats.c.

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

Definition at line 306 of file vf_signalstats.c.

Referenced by filter_frame().

struct { ... } filters_def[]

Initial value:

= {
    {"TOUT", filter_tout},
    {"VREP", filter_vrep},
    {"BRNG", filter_brng},
    {NULL}
}

Referenced by filter_frame().

const AVFilterPad signalstats_inputs[]

static

Initial value:

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

Definition at line 562 of file vf_signalstats.c.

const AVFilterPad signalstats_outputs[]

static

Initial value:

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

Definition at line 571 of file vf_signalstats.c.

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 580 of file vf_signalstats.c.

Data Structures

Macros

Enumerations

Functions

Variables

Macro Definition Documentation

Enumeration Type Documentation

Function Documentation

Variable Documentation