avfilter: add maskedmin/maskedmax filters

Changelog

@@ -17,6 +17,7 @@ version <next>:
 - anlms filter
 - arnndn filter
 - bilateral filter
+- maskedmin and maskedmax filters
 
 
 version 4.2:

doc/filters.texi

@@ -12672,6 +12672,22 @@ copied from first stream.
 By default value 0xf, all planes will be processed.
 @end table
 
+@section maskedmax
+
+Merge the second and third input stream into output stream using absolute differences
+between second input stream and first input stream and absolute difference between
+third input stream and first input stream. The picked value will be from second input
+stream if second absolute difference is greater than first one or from third input stream
+otherwise.
+
+This filter accepts the following options:
+@table @option
+@item planes
+Set which planes will be processed as bitmap, unprocessed planes will be
+copied from first stream.
+By default value 0xf, all planes will be processed.
+@end table
+
 @section maskedmerge
 
 Merge the first input stream with the second input stream using per pixel
@@ -12691,6 +12707,22 @@ copied from first stream.
 By default value 0xf, all planes will be processed.
 @end table
 
+@section maskedmin
+
+Merge the second and third input stream into output stream using absolute differences
+between second input stream and first input stream and absolute difference between
+third input stream and first input stream. The picked value will be from second input
+stream if second absolute difference is less than first one or from third input stream
+otherwise.
+
+This filter accepts the following options:
+@table @option
+@item planes
+Set which planes will be processed as bitmap, unprocessed planes will be
+copied from first stream.
+By default value 0xf, all planes will be processed.
+@end table
+
 @section maskfun
 Create mask from input video.
 

libavfilter/Makefile

@@ -292,7 +292,9 @@ OBJS-$(CONFIG_LUT3D_FILTER)                  += vf_lut3d.o
 OBJS-$(CONFIG_LUTRGB_FILTER)                 += vf_lut.o
 OBJS-$(CONFIG_LUTYUV_FILTER)                 += vf_lut.o
 OBJS-$(CONFIG_MASKEDCLAMP_FILTER)            += vf_maskedclamp.o framesync.o
+OBJS-$(CONFIG_MASKEDMAX_FILTER)              += vf_maskedminmax.o framesync.o
 OBJS-$(CONFIG_MASKEDMERGE_FILTER)            += vf_maskedmerge.o framesync.o
+OBJS-$(CONFIG_MASKEDMIN_FILTER)              += vf_maskedminmax.o framesync.o
 OBJS-$(CONFIG_MASKFUN_FILTER)                += vf_maskfun.o
 OBJS-$(CONFIG_MCDEINT_FILTER)                += vf_mcdeint.o
 OBJS-$(CONFIG_MERGEPLANES_FILTER)            += vf_mergeplanes.o framesync.o

libavfilter/allfilters.c

@@ -277,7 +277,9 @@ extern AVFilter ff_vf_lut3d;
 extern AVFilter ff_vf_lutrgb;
 extern AVFilter ff_vf_lutyuv;
 extern AVFilter ff_vf_maskedclamp;
+extern AVFilter ff_vf_maskedmax;
 extern AVFilter ff_vf_maskedmerge;
+extern AVFilter ff_vf_maskedmin;
 extern AVFilter ff_vf_maskfun;
 extern AVFilter ff_vf_mcdeint;
 extern AVFilter ff_vf_mergeplanes;

libavfilter/version.h

@@ -30,7 +30,7 @@
 #include "libavutil/version.h"
 
 #define LIBAVFILTER_VERSION_MAJOR   7
-#define LIBAVFILTER_VERSION_MINOR  64
+#define LIBAVFILTER_VERSION_MINOR  65
 #define LIBAVFILTER_VERSION_MICRO 100