avfilter: add rgbashift filter

Changelog

@@ -5,6 +5,7 @@ version <next>:
 - tpad filter
 - AV1 decoding support through libdav1d
 - dedot filter
+- chromashift and rgbashift filters
 
 
 version 4.1:

doc/filters.texi

@@ -14311,6 +14311,31 @@ trim=end=5,reverse
 @end example
 @end itemize
 
+@section rgbashift
+Shift R/G/B/A pixels horizontally and/or vertically.
+
+The filter accepts the following options:
+@table @option
+@item rh
+Set amount to shift red horizontally.
+@item rv
+Set amount to shift red vertically.
+@item gh
+Set amount to shift green horizontally.
+@item gv
+Set amount to shift green vertically.
+@item bh
+Set amount to shift blue horizontally.
+@item bv
+Set amount to shift blue vertically.
+@item ah
+Set amount to shift alpha horizontally.
+@item av
+Set amount to shift alpha vertically.
+@item edge
+Set edge mode, can be @var{smear}, default, or @var{warp}.
+@end table
+
 @section roberts
 Apply roberts cross operator to input video stream.
 

libavfilter/Makefile

@@ -330,6 +330,7 @@ OBJS-$(CONFIG_REMOVEGRAIN_FILTER)            += vf_removegrain.o
 OBJS-$(CONFIG_REMOVELOGO_FILTER)             += bbox.o lswsutils.o lavfutils.o vf_removelogo.o
 OBJS-$(CONFIG_REPEATFIELDS_FILTER)           += vf_repeatfields.o
 OBJS-$(CONFIG_REVERSE_FILTER)                += f_reverse.o
+OBJS-$(CONFIG_RGBASHIFT_FILTER)              += vf_chromashift.o
 OBJS-$(CONFIG_ROBERTS_FILTER)                += vf_convolution.o
 OBJS-$(CONFIG_ROBERTS_OPENCL_FILTER)         += vf_convolution_opencl.o opencl.o \
                                                 opencl/convolution.o

libavfilter/allfilters.c

@@ -314,6 +314,7 @@ extern AVFilter ff_vf_removegrain;
 extern AVFilter ff_vf_removelogo;
 extern AVFilter ff_vf_repeatfields;
 extern AVFilter ff_vf_reverse;
+extern AVFilter ff_vf_rgbashift;
 extern AVFilter ff_vf_roberts;
 extern AVFilter ff_vf_roberts_opencl;
 extern AVFilter ff_vf_rotate;

libavfilter/version.h

@@ -30,7 +30,7 @@
 #include "libavutil/version.h"
 
 #define LIBAVFILTER_VERSION_MAJOR   7
-#define LIBAVFILTER_VERSION_MINOR  44
+#define LIBAVFILTER_VERSION_MINOR  45
 #define LIBAVFILTER_VERSION_MICRO 100
 
 #define LIBAVFILTER_VERSION_INT AV_VERSION_INT(LIBAVFILTER_VERSION_MAJOR, \