vf_signalstats.c File Reference

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

Go to the source code of this file.

Data Structures
struct	SignalstatsContext

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 int	config_props (AVFilterLink *outlink)
static void	burn_frame (SignalstatsContext *s, AVFrame *f, int x, int y)
static int	filter_brng (SignalstatsContext *s, const AVFrame *in, AVFrame *out, int y, int w, int h)
static int	filter_tout_outlier (uint8_t x, uint8_t y, uint8_t z)
static int	filter_tout (SignalstatsContext *s, const AVFrame *in, AVFrame *out, int y, int w, int h)
static void	filter_init_vrep (SignalstatsContext *s, const AVFrame *p, int w, int h)
static int	filter_vrep (SignalstatsContext *s, const AVFrame *in, AVFrame *out, int y, int w, int h)
static int	filter_frame (AVFilterLink *link, AVFrame *in)

Variables
static const AVOption	signalstats_options []
struct {
const char *   name
void(*   init )(SignalstatsContext *s, const       AVFrame *p, int w, int h)
int(*   process )(SignalstatsContext *s, const       AVFrame *in, AVFrame *out, int       y, int w, int h)
}	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 51 of file vf_signalstats.c.

#define FLAGS   AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM

Definition at line 52 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 207 of file vf_signalstats.c.

Referenced by filter_init_vrep(), and filter_vrep().

#define DEPTH   256

Definition at line 255 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 70 of file vf_signalstats.c.

static av_cold void uninit ( AVFilterContext *  ctx )

static

Definition at line 87 of file vf_signalstats.c.

static int query_formats ( AVFilterContext *  ctx )

static

Definition at line 94 of file vf_signalstats.c.

static int config_props ( AVFilterLink *  outlink )

static

Definition at line 106 of file vf_signalstats.c.

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

static

Definition at line 133 of file vf_signalstats.c.

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

static int filter_brng ( SignalstatsContext *  s, const AVFrame *  in, AVFrame *  out, int  y, int  w, int  h  )

static

Definition at line 142 of file vf_signalstats.c.

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

static

Definition at line 165 of file vf_signalstats.c.

static int filter_tout ( SignalstatsContext *  s, const AVFrame *  in, AVFrame *  out, int  y, int  w, int  h  )

static

Definition at line 170 of file vf_signalstats.c.

static void filter_init_vrep ( SignalstatsContext *  s, const AVFrame *  p, int  w, int  h  )

static

Definition at line 209 of file vf_signalstats.c.

static int filter_vrep ( SignalstatsContext *  s, const AVFrame *  in, AVFrame *  out, int  y, int  w, int  h  )

static

Definition at line 227 of file vf_signalstats.c.

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

static

Definition at line 257 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 repitition",    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 repitition",  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 54 of file vf_signalstats.c.

const char* name

Definition at line 245 of file vf_signalstats.c.

void(* init)(SignalstatsContext *s, const AVFrame *p, int w, int h)

Definition at line 246 of file vf_signalstats.c.

Referenced by command(), configure_filtergraph(), idct248_ref(), FFMPEG_FrameReceiver::initWithContext:, AVFFrameReceiver::initWithContext:, mpeg12_class(), and mpeg4_update_thread_context().

int(* process)(SignalstatsContext *s, const AVFrame *in, AVFrame *out, int y, int w, int h)

Definition at line 247 of file vf_signalstats.c.

struct { ... } filters_def[]

Initial value:

= {
    {"TOUT", NULL,              filter_tout},
    {"VREP", filter_init_vrep,  filter_vrep},
    {"BRNG", NULL,              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 450 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 459 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,
}

Definition at line 468 of file vf_signalstats.c.