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vf_vignette.c File Reference
#include <float.h>
#include "libavutil/opt.h"
#include "libavutil/eval.h"
#include "libavutil/avassert.h"
#include "libavutil/pixdesc.h"
#include "avfilter.h"
#include "formats.h"
#include "internal.h"
#include "video.h"

Go to the source code of this file.

Data Structures

struct  VignetteContext
 

Macros

#define DEF_EXPR_FIELDS(name)   AVExpr *name##_pexpr; char *name##_expr; double name
 
#define OFFSET(x)   offsetof(VignetteContext, x)
 
#define FLAGS   AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
 
#define PARSE_EXPR(name)
 
#define TS2D(ts)   ((ts) == AV_NOPTS_VALUE ? NAN : (double)(ts))
 
#define TS2T(ts, tb)   ((ts) == AV_NOPTS_VALUE ? NAN : (double)(ts) * av_q2d(tb))
 

Enumerations

enum  var_name {
  VAR_CH, VAR_N, VAR_NB_IN_CHANNELS, VAR_NB_OUT_CHANNELS,
  VAR_T, VAR_S, VAR_VARS_NB, VAR_B1,
  VAR_B2, VAR_S1, VAR_S2, VAR_T1,
  VAR_T2, VAR_NB, VAR_TB, VAR_PTS,
  VAR_START_PTS, VAR_PREV_PTS, VAR_PREV_SELECTED_PTS, VAR_T,
  VAR_START_T, VAR_PREV_T, VAR_PREV_SELECTED_T, VAR_PICT_TYPE,
  VAR_I, VAR_P, VAR_B, VAR_S,
  VAR_SI, VAR_SP, VAR_BI, VAR_PICT_TYPE_I,
  VAR_PICT_TYPE_P, VAR_PICT_TYPE_B, VAR_PICT_TYPE_S, VAR_PICT_TYPE_SI,
  VAR_PICT_TYPE_SP, VAR_PICT_TYPE_BI, VAR_INTERLACE_TYPE, VAR_INTERLACE_TYPE_P,
  VAR_INTERLACE_TYPE_T, VAR_INTERLACE_TYPE_B, VAR_CONSUMED_SAMPLES_N, VAR_SAMPLES_N,
  VAR_SAMPLE_RATE, VAR_N, VAR_SELECTED_N, VAR_PREV_SELECTED_N,
  VAR_KEY, VAR_POS, VAR_SCENE, VAR_VARS_NB,
  VAR_FRAME_RATE, VAR_INTERLACED, VAR_N, VAR_NB_CONSUMED_SAMPLES,
  VAR_NB_SAMPLES, VAR_POS, VAR_PREV_INPTS, VAR_PREV_INT,
  VAR_PREV_OUTPTS, VAR_PREV_OUTT, VAR_PTS, VAR_SAMPLE_RATE,
  VAR_STARTPTS, VAR_STARTT, VAR_T, VAR_TB,
  VAR_RTCTIME, VAR_RTCSTART, VAR_S, VAR_SR,
  VAR_VARS_NB, VAR_AVTB, VAR_INTB, VAR_SR,
  VAR_VARS_NB, VAR_W, VAR_H, VAR_A,
  VAR_DAR, VAR_SAR, VAR_HSUB, VAR_VSUB,
  VARS_NB, VAR_W, VAR_H, VAR_CW,
  VAR_CH, VAR_HSUB, VAR_VSUB, VARS_NB,
  VAR_IN_W, VAR_IW, VAR_IN_H, VAR_IH,
  VAR_OUT_W, VAR_OW, VAR_OUT_H, VAR_OH,
  VAR_A, VAR_SAR, VAR_DAR, VAR_HSUB,
  VAR_VSUB, VAR_X, VAR_Y, VAR_N,
  VAR_POS, VAR_T, VAR_VARS_NB, VAR_DAR,
  VAR_HSUB, VAR_VSUB, VAR_IN_H, VAR_IH,
  VAR_IN_W, VAR_IW, VAR_SAR, VAR_X,
  VAR_Y, VAR_H, VAR_W, VAR_T,
  VAR_MAX, VARS_NB, VAR_DAR, VAR_HSUB,
  VAR_VSUB, VAR_LINE_H, VAR_LH, VAR_MAIN_H,
  VAR_h, VAR_H, VAR_MAIN_W, VAR_w,
  VAR_W, VAR_MAX_GLYPH_A, VAR_ASCENT, VAR_MAX_GLYPH_D,
  VAR_DESCENT, VAR_MAX_GLYPH_H, VAR_MAX_GLYPH_W, VAR_N,
  VAR_SAR, VAR_T, VAR_TEXT_H, VAR_TH,
  VAR_TEXT_W, VAR_TW, VAR_X, VAR_Y,
  VAR_PICT_TYPE, VAR_VARS_NB, VAR_N, VAR_POS,
  VAR_R, VAR_T, VAR_NB, VAR_N,
  VAR_PTS, VAR_R, VAR_T, VAR_TB,
  VAR_NB, VAR_W, VAR_H, VAR_VAL,
  VAR_MAXVAL, VAR_MINVAL, VAR_NEGVAL, VAR_CLIPVAL,
  VAR_VARS_NB, VAR_MAIN_W, VAR_MW, VAR_MAIN_H,
  VAR_MH, VAR_OVERLAY_W, VAR_OW, VAR_OVERLAY_H,
  VAR_OH, VAR_HSUB, VAR_VSUB, VAR_X,
  VAR_Y, VAR_N, VAR_POS, VAR_T,
  VAR_VARS_NB, VAR_IN_W, VAR_IW, VAR_IN_H,
  VAR_IH, VAR_OUT_W, VAR_OW, VAR_OUT_H,
  VAR_OH, VAR_X, VAR_Y, VAR_A,
  VAR_SAR, VAR_DAR, VAR_HSUB, VAR_VSUB,
  VARS_NB, VAR_IN_W, VAR_IW, VAR_IN_H,
  VAR_IH, VAR_OUT_W, VAR_OW, VAR_OUT_H,
  VAR_OH, VAR_HSUB, VAR_VSUB, VAR_N,
  VAR_T, VAR_VARS_NB, VAR_IN_W, VAR_IW,
  VAR_IN_H, VAR_IH, VAR_OUT_W, VAR_OW,
  VAR_OUT_H, VAR_OH, VAR_A, VAR_SAR,
  VAR_DAR, VAR_HSUB, VAR_VSUB, VAR_OHSUB,
  VAR_OVSUB, VARS_NB, VAR_W, VAR_H,
  VAR_N, VAR_PTS, VAR_R, VAR_T,
  VAR_TB, VAR_NB, VAR_IN_W, VAR_IW,
  VAR_IN_H, VAR_IH, VAR_OUT_W, VAR_OW,
  VAR_OUT_H, VAR_OH, VAR_IN, VAR_ON,
  VAR_DURATION, VAR_PDURATION, VAR_TIME, VAR_FRAME,
  VAR_ZOOM, VAR_PZOOM, VAR_X, VAR_PX,
  VAR_Y, VAR_PY, VAR_A, VAR_SAR,
  VAR_DAR, VAR_HSUB, VAR_VSUB, VARS_NB,
  VAR_X, VAR_Y, VAR_W, VAR_H,
  VAR_TIME, VAR_SPEED, VAR_TEMPO, VAR_ORDER,
  VAR_PATTERN, VAR_ROW, VAR_VARS_NB
}
 
enum  EvalMode {
  EVAL_MODE_ONCE, EVAL_MODE_FRAME, EVAL_MODE_NB, EVAL_MODE_INIT,
  EVAL_MODE_FRAME, EVAL_MODE_NB, EVAL_MODE_INIT, EVAL_MODE_FRAME,
  EVAL_MODE_NB
}
 

Functions

 AVFILTER_DEFINE_CLASS (vignette)
 
static av_cold int init (AVFilterContext *ctx)
 
static av_cold void uninit (AVFilterContext *ctx)
 
static int query_formats (AVFilterContext *ctx)
 
static double get_natural_factor (const VignetteContext *s, int x, int y)
 
static void update_context (VignetteContext *s, AVFilterLink *inlink, AVFrame *frame)
 
static double get_dither_value (VignetteContext *s)
 
static int filter_frame (AVFilterLink *inlink, AVFrame *in)
 
static int config_props (AVFilterLink *inlink)
 

Variables

static const char *const var_names []
 
static const AVOption vignette_options []
 
static const AVFilterPad vignette_inputs []
 
static const AVFilterPad vignette_outputs []
 
AVFilter ff_vf_vignette
 

Macro Definition Documentation

#define DEF_EXPR_FIELDS (   name)    AVExpr *name##_pexpr; char *name##_expr; double name

Definition at line 65 of file vf_vignette.c.

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

Definition at line 80 of file vf_vignette.c.

#define FLAGS   AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM

Definition at line 81 of file vf_vignette.c.

#define PARSE_EXPR (   name)
Value:
do { \
int ret = av_expr_parse(&s->name##_pexpr, s->name##_expr, var_names, \
NULL, NULL, NULL, NULL, 0, ctx); \
if (ret < 0) { \
av_log(ctx, AV_LOG_ERROR, "Unable to parse expression for '" \
AV_STRINGIFY(name) "'\n"); \
return ret; \
} \
} while (0)
NULL
#define NULL
Definition: coverity.c:32
s
const char * s
Definition: avisynth_c.h:631
av_expr_parse
int av_expr_parse(AVExpr **expr, const char *s, const char *const *const_names, const char *const *func1_names, double(*const *funcs1)(void *, double), const char *const *func2_names, double(*const *funcs2)(void *, double, double), int log_offset, void *log_ctx)
Parse an expression.
Definition: eval.c:652
if
if()
Definition: avfilter.c:975
av_log
#define av_log(a,...)
Definition: tableprint_vlc.h:28
AV_LOG_ERROR
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:176
return
return
Definition: audio_convert.c:415
ret
ret
Definition: avfilter.c:974
AV_STRINGIFY
#define AV_STRINGIFY(s)
Definition: macros.h:36
var_names
static const char *const var_names[]
Definition: vf_vignette.c:32
name
const char * name
Definition: opengl_enc.c:103

Referenced by init().

#define TS2D (   ts)    ((ts) == AV_NOPTS_VALUE ? NAN : (double)(ts))

Definition at line 158 of file vf_vignette.c.

Referenced by update_context().

#define TS2T (   ts,
  tb 
)    ((ts) == AV_NOPTS_VALUE ? NAN : (double)(ts) * av_q2d(tb))

Definition at line 159 of file vf_vignette.c.

Referenced by update_context().

Enumeration Type Documentation

enum var_name
Enumerator
VAR_CH 
VAR_N 
VAR_NB_IN_CHANNELS 
VAR_NB_OUT_CHANNELS 
VAR_T 
VAR_S 
VAR_VARS_NB 
VAR_B1 
VAR_B2 
VAR_S1 
VAR_S2 
VAR_T1 
VAR_T2 
VAR_NB 
VAR_TB 
VAR_PTS 
VAR_START_PTS 
VAR_PREV_PTS 
VAR_PREV_SELECTED_PTS 
VAR_T 
VAR_START_T 
VAR_PREV_T 
VAR_PREV_SELECTED_T 
VAR_PICT_TYPE 
VAR_I 
VAR_P 
VAR_B 
VAR_S 
VAR_SI 
VAR_SP 
VAR_BI 
VAR_PICT_TYPE_I 
VAR_PICT_TYPE_P 
VAR_PICT_TYPE_B 
VAR_PICT_TYPE_S 
VAR_PICT_TYPE_SI 
VAR_PICT_TYPE_SP 
VAR_PICT_TYPE_BI 
VAR_INTERLACE_TYPE 
VAR_INTERLACE_TYPE_P 
VAR_INTERLACE_TYPE_T 
VAR_INTERLACE_TYPE_B 
VAR_CONSUMED_SAMPLES_N 
VAR_SAMPLES_N 
VAR_SAMPLE_RATE 
VAR_N 
VAR_SELECTED_N 
VAR_PREV_SELECTED_N 
VAR_KEY 
VAR_POS 
VAR_SCENE 
VAR_VARS_NB 
VAR_FRAME_RATE 
VAR_INTERLACED 
VAR_N 
VAR_NB_CONSUMED_SAMPLES 
VAR_NB_SAMPLES 
VAR_POS 
VAR_PREV_INPTS 
VAR_PREV_INT 
VAR_PREV_OUTPTS 
VAR_PREV_OUTT 
VAR_PTS 
VAR_SAMPLE_RATE 
VAR_STARTPTS 
VAR_STARTT 
VAR_T 
VAR_TB 
VAR_RTCTIME 
VAR_RTCSTART 
VAR_S 
VAR_SR 
VAR_VARS_NB 
VAR_AVTB 
VAR_INTB 
VAR_SR 
VAR_VARS_NB 
VAR_W 
VAR_H 
VAR_A 
VAR_DAR 
VAR_SAR 
VAR_HSUB 
VAR_VSUB 
VARS_NB 
VAR_W 
VAR_H 
VAR_CW 
VAR_CH 
VAR_HSUB 
VAR_VSUB 
VARS_NB 
VAR_IN_W 
VAR_IW 
VAR_IN_H 
VAR_IH 
VAR_OUT_W 
VAR_OW 
VAR_OUT_H 
VAR_OH 
VAR_A 
VAR_SAR 
VAR_DAR 
VAR_HSUB 
VAR_VSUB 
VAR_X 
VAR_Y 
VAR_N 
VAR_POS 
VAR_T 
VAR_VARS_NB 
VAR_DAR 
VAR_HSUB 
VAR_VSUB 
VAR_IN_H 
VAR_IH 
VAR_IN_W 
VAR_IW 
VAR_SAR 
VAR_X 
VAR_Y 
VAR_H 
VAR_W 
VAR_T 
VAR_MAX 
VARS_NB 
VAR_DAR 
VAR_HSUB 
VAR_VSUB 
VAR_LINE_H 
VAR_LH 
VAR_MAIN_H 
VAR_h 
VAR_H 
VAR_MAIN_W 
VAR_w 
VAR_W 
VAR_MAX_GLYPH_A 
VAR_ASCENT 
VAR_MAX_GLYPH_D 
VAR_DESCENT 
VAR_MAX_GLYPH_H 
VAR_MAX_GLYPH_W 
VAR_N 
VAR_SAR 
VAR_T 
VAR_TEXT_H 
VAR_TH 
VAR_TEXT_W 
VAR_TW 
VAR_X 
VAR_Y 
VAR_PICT_TYPE 
VAR_VARS_NB 
VAR_N 
VAR_POS 
VAR_R 
VAR_T 
VAR_NB 
VAR_N 
VAR_PTS 
VAR_R 
VAR_T 
VAR_TB 
VAR_NB 
VAR_W 
VAR_H 
VAR_VAL 
VAR_MAXVAL 
VAR_MINVAL 
VAR_NEGVAL 
VAR_CLIPVAL 
VAR_VARS_NB 
VAR_MAIN_W 
VAR_MW 
VAR_MAIN_H 
VAR_MH 
VAR_OVERLAY_W 
VAR_OW 
VAR_OVERLAY_H 
VAR_OH 
VAR_HSUB 
VAR_VSUB 
VAR_X 
VAR_Y 
VAR_N 
VAR_POS 
VAR_T 
VAR_VARS_NB 
VAR_IN_W 
VAR_IW 
VAR_IN_H 
VAR_IH 
VAR_OUT_W 
VAR_OW 
VAR_OUT_H 
VAR_OH 
VAR_X 
VAR_Y 
VAR_A 
VAR_SAR 
VAR_DAR 
VAR_HSUB 
VAR_VSUB 
VARS_NB 
VAR_IN_W 
VAR_IW 
VAR_IN_H 
VAR_IH 
VAR_OUT_W 
VAR_OW 
VAR_OUT_H 
VAR_OH 
VAR_HSUB 
VAR_VSUB 
VAR_N 
VAR_T 
VAR_VARS_NB 
VAR_IN_W 
VAR_IW 
VAR_IN_H 
VAR_IH 
VAR_OUT_W 
VAR_OW 
VAR_OUT_H 
VAR_OH 
VAR_A 
VAR_SAR 
VAR_DAR 
VAR_HSUB 
VAR_VSUB 
VAR_OHSUB 
VAR_OVSUB 
VARS_NB 
VAR_W 
VAR_H 
VAR_N 
VAR_PTS 
VAR_R 
VAR_T 
VAR_TB 
VAR_NB 
VAR_IN_W 
VAR_IW 
VAR_IN_H 
VAR_IH 
VAR_OUT_W 
VAR_OW 
VAR_OUT_H 
VAR_OH 
VAR_IN 
VAR_ON 
VAR_DURATION 
VAR_PDURATION 
VAR_TIME 
VAR_FRAME 
VAR_ZOOM 
VAR_PZOOM 
VAR_X 
VAR_PX 
VAR_Y 
VAR_PY 
VAR_A 
VAR_SAR 
VAR_DAR 
VAR_HSUB 
VAR_VSUB 
VARS_NB 
VAR_X 
VAR_Y 
VAR_W 
VAR_H 
VAR_TIME 
VAR_SPEED 
VAR_TEMPO 
VAR_ORDER 
VAR_PATTERN 
VAR_ROW 
VAR_VARS_NB 

Definition at line 43 of file vf_vignette.c.

enum EvalMode
Enumerator
EVAL_MODE_ONCE 
EVAL_MODE_FRAME 
EVAL_MODE_NB 
EVAL_MODE_INIT 
EVAL_MODE_FRAME 
EVAL_MODE_NB 
EVAL_MODE_INIT 
EVAL_MODE_FRAME 
EVAL_MODE_NB 

Definition at line 54 of file vf_vignette.c.

Function Documentation

AVFILTER_DEFINE_CLASS ( vignette  )
static av_cold int init ( AVFilterContext *  ctx)
static

Definition at line 100 of file vf_vignette.c.

static av_cold void uninit ( AVFilterContext *  ctx)
static

Definition at line 120 of file vf_vignette.c.

static int query_formats ( AVFilterContext *  ctx)
static

Definition at line 129 of file vf_vignette.c.

static double get_natural_factor ( const VignetteContext *  s,
int  x,
int  y 
)
static

Definition at line 145 of file vf_vignette.c.

Referenced by update_context().

static void update_context ( VignetteContext *  s,
AVFilterLink *  inlink,
AVFrame *  frame 
)
static

Definition at line 161 of file vf_vignette.c.

Referenced by config_props(), and filter_frame().

static double get_dither_value ( VignetteContext *  s)
inlinestatic

Definition at line 201 of file vf_vignette.c.

Referenced by filter_frame().

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

Definition at line 211 of file vf_vignette.c.

static int config_props ( AVFilterLink *  inlink)
static

Definition at line 294 of file vf_vignette.c.

Variable Documentation

const char* const var_names[]
static
Initial value:
= {
"w",
"h",
"n",
"pts",
"r",
"t",
"tb",
NULL
}
NULL
#define NULL
Definition: coverity.c:32

Definition at line 32 of file vf_vignette.c.

const AVOption vignette_options[]
static
Initial value:
= {
{ "angle", "set lens angle", OFFSET(angle_expr), AV_OPT_TYPE_STRING, {.str="PI/5"}, .flags = FLAGS },
{ "a", "set lens angle", OFFSET(angle_expr), AV_OPT_TYPE_STRING, {.str="PI/5"}, .flags = FLAGS },
{ "x0", "set circle center position on x-axis", OFFSET(x0_expr), AV_OPT_TYPE_STRING, {.str="w/2"}, .flags = FLAGS },
{ "y0", "set circle center position on y-axis", OFFSET(y0_expr), AV_OPT_TYPE_STRING, {.str="h/2"}, .flags = FLAGS },
{ "mode", "set forward/backward mode", OFFSET(backward), AV_OPT_TYPE_INT, {.i64 = 0}, 0, 1, FLAGS, "mode" },
{ "forward", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = 0}, INT_MIN, INT_MAX, FLAGS, "mode"},
{ "backward", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = 1}, INT_MIN, INT_MAX, FLAGS, "mode"},
{ "eval", "specify when to evaluate expressions", OFFSET(eval_mode), AV_OPT_TYPE_INT, {.i64 = EVAL_MODE_INIT}, 0, EVAL_MODE_NB-1, FLAGS, "eval" },
{ "init", "eval expressions once during initialization", 0, AV_OPT_TYPE_CONST, {.i64=EVAL_MODE_INIT}, .flags = FLAGS, .unit = "eval" },
{ "frame", "eval expressions for each frame", 0, AV_OPT_TYPE_CONST, {.i64=EVAL_MODE_FRAME}, .flags = FLAGS, .unit = "eval" },
{ "dither", "set dithering", OFFSET(do_dither), AV_OPT_TYPE_INT, {.i64 = 1}, 0, 1, FLAGS },
{ "aspect", "set aspect ratio", OFFSET(aspect), AV_OPT_TYPE_RATIONAL, {.dbl = 1}, 0, DBL_MAX, .flags = FLAGS },
{ NULL }
}
NULL
#define NULL
Definition: coverity.c:32
EVAL_MODE_NB
Definition: vf_vignette.c:57
AV_OPT_TYPE_INT
Definition: opt.h:223
AV_OPT_TYPE_CONST
Definition: opt.h:231
AV_OPT_TYPE_STRING
Definition: opt.h:227
FLAGS
#define FLAGS
Definition: vf_vignette.c:81
OFFSET
#define OFFSET(x)
Definition: vf_vignette.c:80
EVAL_MODE_FRAME
Definition: vf_vignette.c:56
EVAL_MODE_INIT
Definition: vf_vignette.c:55
AV_OPT_TYPE_RATIONAL
Definition: opt.h:228

Definition at line 82 of file vf_vignette.c.

const AVFilterPad vignette_inputs[]
static
Initial value:
= {
{
.name = "default",
.type = AVMEDIA_TYPE_VIDEO,
.filter_frame = filter_frame,
.config_props = config_props,
},
{ NULL }
}
NULL
#define NULL
Definition: coverity.c:32
config_props
static int config_props(AVFilterLink *inlink)
Definition: vf_vignette.c:294
filter_frame
static int filter_frame(AVFilterLink *inlink, AVFrame *in)
Definition: vf_vignette.c:211
AVMEDIA_TYPE_VIDEO
Definition: avutil.h:194

Definition at line 330 of file vf_vignette.c.

const AVFilterPad vignette_outputs[]
static
Initial value:
= {
{
.name = "default",
.type = AVMEDIA_TYPE_VIDEO,
},
{ NULL }
}
NULL
#define NULL
Definition: coverity.c:32
AVMEDIA_TYPE_VIDEO
Definition: avutil.h:194

Definition at line 340 of file vf_vignette.c.

AVFilter ff_vf_vignette
Initial value:
= {
.name = "vignette",
.description = NULL_IF_CONFIG_SMALL("Make or reverse a vignette effect."),
.priv_size = sizeof(VignetteContext),
.init = init,
.uninit = uninit,
.query_formats = query_formats,
.inputs = vignette_inputs,
.outputs = vignette_outputs,
.priv_class = &vignette_class,
.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC,
}
vignette_outputs
static const AVFilterPad vignette_outputs[]
Definition: vf_vignette.c:340
outputs
static const AVFilterPad outputs[]
Definition: af_ashowinfo.c:248
init
static av_cold int init(AVFilterContext *ctx)
Definition: vf_vignette.c:100
uninit
static av_cold void uninit(AVFilterContext *ctx)
Definition: vf_vignette.c:120
AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC
#define AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC
Some filters support a generic "enable" expression option that can be used to enable or disable a fil...
Definition: avfilter.h:451
vignette_inputs
static const AVFilterPad vignette_inputs[]
Definition: vf_vignette.c:330
query_formats
static int query_formats(AVFilterContext *ctx)
Definition: vf_vignette.c:129
NULL_IF_CONFIG_SMALL
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:175
inputs
static const AVFilterPad inputs[]
Definition: af_ashowinfo.c:239
flags
static int flags
Definition: cpu.c:47

Definition at line 348 of file vf_vignette.c.

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