avfilter: add dedot video filter

Changelog

@@ -4,6 +4,7 @@ releases are sorted from youngest to oldest.
 version <next>:
 - tpad filter
 - AV1 decoding support through libdav1d
+- dedot filter
 
 
 version 4.1:

doc/filters.texi

@@ -7761,6 +7761,30 @@ had noise.
 
 The @code{deconvolve} filter also supports the @ref{framesync} options.
 
+@section dedot
+
+Reduce cross-luminance (dot-crawl) and cross-color (rainbows) from video.
+
+It accepts the following options:
+
+@table @option
+@item m
+Set mode of operation. Can be combination of @var{dotcrawl} for cross-luminance reduction and/or
+@var{rainbows} for cross-color reduction.
+
+@item lt
+Set spatial luma threshold. Lower values increases reduction of cross-luminance.
+
+@item tl
+Set tolerance for temporal luma. Higher values increases reduction of cross-luminance.
+
+@item tc
+Set tolerance for chroma temporal variation. Higher values increases reduction of cross-color.
+
+@item ct
+Set temporal chroma threshold. Lower values increases reduction of cross-color.
+@end table
+
 @section deflate
 
 Apply deflate effect to the video.

libavfilter/Makefile

@@ -194,6 +194,7 @@ OBJS-$(CONFIG_DEBAND_FILTER)                 += vf_deband.o
 OBJS-$(CONFIG_DEBLOCK_FILTER)                += vf_deblock.o
 OBJS-$(CONFIG_DECIMATE_FILTER)               += vf_decimate.o
 OBJS-$(CONFIG_DECONVOLVE_FILTER)             += vf_convolve.o framesync.o
+OBJS-$(CONFIG_DEDOT_FILTER)                  += vf_dedot.o
 OBJS-$(CONFIG_DEFLATE_FILTER)                += vf_neighbor.o
 OBJS-$(CONFIG_DEFLICKER_FILTER)              += vf_deflicker.o
 OBJS-$(CONFIG_DEINTERLACE_QSV_FILTER)        += vf_deinterlace_qsv.o

libavfilter/allfilters.c

@@ -182,6 +182,7 @@ extern AVFilter ff_vf_deband;
 extern AVFilter ff_vf_deblock;
 extern AVFilter ff_vf_decimate;
 extern AVFilter ff_vf_deconvolve;
+extern AVFilter ff_vf_dedot;
 extern AVFilter ff_vf_deflate;
 extern AVFilter ff_vf_deflicker;
 extern AVFilter ff_vf_deinterlace_qsv;

libavfilter/version.h

@@ -30,7 +30,7 @@
 #include "libavutil/version.h"
 
 #define LIBAVFILTER_VERSION_MAJOR   7
-#define LIBAVFILTER_VERSION_MINOR  43
+#define LIBAVFILTER_VERSION_MINOR  44
 #define LIBAVFILTER_VERSION_MICRO 100
 
 #define LIBAVFILTER_VERSION_INT AV_VERSION_INT(LIBAVFILTER_VERSION_MAJOR, \