avfilter: add arnndn filter

Changelog

@@ -15,6 +15,7 @@ version <next>:
 - scroll video filter
 - photosensitivity filter
 - anlms filter
+- arnndn filter
 
 
 version 4.2:

doc/filters.texi

@@ -2116,6 +2116,17 @@ atrim=end=5,areverse
 @end example
 @end itemize
 
+@section arnndn
+
+Reduce noise from speech using Recurrent Neural Networks.
+
+This filter accepts the following options:
+
+@table @option
+@item model, m
+Set train model file to load. This option is always required.
+@end table
+
 @section asetnsamples
 
 Set the number of samples per each output audio frame.

libavfilter/Makefile

@@ -72,6 +72,7 @@ OBJS-$(CONFIG_APULSATOR_FILTER)              += af_apulsator.o
 OBJS-$(CONFIG_AREALTIME_FILTER)              += f_realtime.o
 OBJS-$(CONFIG_ARESAMPLE_FILTER)              += af_aresample.o
 OBJS-$(CONFIG_AREVERSE_FILTER)               += f_reverse.o
+OBJS-$(CONFIG_ARNNDN_FILTER)                 += af_arnndn.o
 OBJS-$(CONFIG_ASELECT_FILTER)                += f_select.o
 OBJS-$(CONFIG_ASENDCMD_FILTER)               += f_sendcmd.o
 OBJS-$(CONFIG_ASETNSAMPLES_FILTER)           += af_asetnsamples.o

libavfilter/allfilters.c

@@ -65,6 +65,7 @@ extern AVFilter ff_af_apulsator;
 extern AVFilter ff_af_arealtime;
 extern AVFilter ff_af_aresample;
 extern AVFilter ff_af_areverse;
+extern AVFilter ff_af_arnndn;
 extern AVFilter ff_af_aselect;
 extern AVFilter ff_af_asendcmd;
 extern AVFilter ff_af_asetnsamples;

libavfilter/version.h

@@ -30,8 +30,8 @@
 #include "libavutil/version.h"
 
 #define LIBAVFILTER_VERSION_MAJOR   7
-#define LIBAVFILTER_VERSION_MINOR  62
-#define LIBAVFILTER_VERSION_MICRO 101
+#define LIBAVFILTER_VERSION_MINOR  63
+#define LIBAVFILTER_VERSION_MICRO 100
 
 
 #define LIBAVFILTER_VERSION_INT AV_VERSION_INT(LIBAVFILTER_VERSION_MAJOR, \