avfilter: add floodfill filter

Changelog

@@ -31,6 +31,7 @@ version <next>:
 - Dolby E decoder and SMPTE 337M demuxer
 - unpremultiply video filter
 - tlut2 video filter
+- floodfill video filter
 
 version 3.3:
 - CrystalHD decoder moved to new decode API

doc/filters.texi

@@ -8404,6 +8404,43 @@ ffmpeg -i file.ts -vf find_rect=newref.pgm,cover_rect=cover.jpg:mode=cover new.m
 @end example
 @end itemize
 
+@section floodfill
+
+Flood area with values of same pixel components with another values.
+
+It accepts the following options:
+@table @option
+@item x
+Set pixel x coordinate.
+
+@item y
+Set pixel y coordinate.
+
+@item s0
+Set source #0 component value.
+
+@item s1
+Set source #1 component value.
+
+@item s2
+Set source #2 component value.
+
+@item s3
+Set source #3 component value.
+
+@item d0
+Set destination #0 component value.
+
+@item d1
+Set destination #1 component value.
+
+@item d2
+Set destination #2 component value.
+
+@item d3
+Set destination #3 component value.
+@end table
+
 @anchor{format}
 @section format
 

libavfilter/Makefile

@@ -186,6 +186,7 @@ OBJS-$(CONFIG_FIELDHINT_FILTER)              += vf_fieldhint.o
 OBJS-$(CONFIG_FIELDMATCH_FILTER)             += vf_fieldmatch.o
 OBJS-$(CONFIG_FIELDORDER_FILTER)             += vf_fieldorder.o
 OBJS-$(CONFIG_FIND_RECT_FILTER)              += vf_find_rect.o lavfutils.o
+OBJS-$(CONFIG_FLOODFILL_FILTER)              += vf_floodfill.o
 OBJS-$(CONFIG_FORMAT_FILTER)                 += vf_format.o
 OBJS-$(CONFIG_FPS_FILTER)                    += vf_fps.o
 OBJS-$(CONFIG_FRAMEPACK_FILTER)              += vf_framepack.o

libavfilter/allfilters.c

@@ -198,6 +198,7 @@ static void register_all(void)
     REGISTER_FILTER(FIELDMATCH,     fieldmatch,     vf);
     REGISTER_FILTER(FIELDORDER,     fieldorder,     vf);
     REGISTER_FILTER(FIND_RECT,      find_rect,      vf);
+    REGISTER_FILTER(FLOODFILL,      floodfill,      vf);
     REGISTER_FILTER(FORMAT,         format,         vf);
     REGISTER_FILTER(FPS,            fps,            vf);
     REGISTER_FILTER(FRAMEPACK,      framepack,      vf);

libavfilter/version.h

@@ -30,7 +30,7 @@
 #include "libavutil/version.h"
 
 #define LIBAVFILTER_VERSION_MAJOR   6
-#define LIBAVFILTER_VERSION_MINOR  97
+#define LIBAVFILTER_VERSION_MINOR  98
 #define LIBAVFILTER_VERSION_MICRO 100
 
 #define LIBAVFILTER_VERSION_INT AV_VERSION_INT(LIBAVFILTER_VERSION_MAJOR, \