Port libmpcodecs hqdn3d filter.

Patch by Baptiste with some fixes by me.

Originally committed as revision 25880 to svn://svn.ffmpeg.org/ffmpeg/trunk

Changelog

@@ -61,6 +61,7 @@ version <next>:
 - IEC 61937 demuxer
 - Mobotix .mxg demuxer
 - frei0r source added
+- hqdn3d filter added
 
 
 version 0.6:

configure

@@ -1407,6 +1407,7 @@ blackframe_filter_deps="gpl"
 cropdetect_filter_deps="gpl"
 frei0r_filter_deps="frei0r dlopen strtok_r"
 frei0r_src_filter_deps="frei0r dlopen strtok_r"
+hqdn3d_filter_deps="gpl"
 ocv_smooth_filter_deps="libopencv"
 yadif_filter_deps="gpl"
 

doc/filters.texi

@@ -344,6 +344,33 @@ For example to horizontally flip the video in input with
 ffmpeg -i in.avi -vf "hflip" out.avi
 @end example
 
+@section hqdn3d
+
+High precision/quality 3d denoise filter. This filter aims to reduce
+image noise producing smooth images and making still images really
+still. It should enhance compressibility.
+
+It accepts the following optional parameters:
+@var{luma_spatial}:@var{chroma_spatial}:@var{luma_tmp}:@var{chroma_tmp}
+
+@table @option
+@item luma_spatial
+a non-negative float number which specifies spatial luma strength,
+defaults to 4.0
+
+@item chroma_spatial
+a non-negative float number which specifies spatial chroma strength,
+defaults to 3.0*@var{luma_spatial}/4.0
+
+@item luma_tmp
+a float number which specifies luma temporal strength, defaults to
+6.0*@var{luma_spatial}/4.0
+
+@item chroma_tmp
+a float number which specifies chroma temporal strength, defaults to
+@var{luma_tmp}*@var{chroma_spatial}/@var{luma_spatial}
+@end table
+
 @section noformat
 
 Force libavfilter not to use any of the specified pixel formats for the

libavfilter/Makefile

@@ -27,6 +27,7 @@ OBJS-$(CONFIG_FIFO_FILTER)                   += vf_fifo.o
 OBJS-$(CONFIG_FORMAT_FILTER)                 += vf_format.o
 OBJS-$(CONFIG_FREI0R_FILTER)                 += vf_frei0r.o
 OBJS-$(CONFIG_HFLIP_FILTER)                  += vf_hflip.o
+OBJS-$(CONFIG_HQDN3D_FILTER)                 += vf_hqdn3d.o
 OBJS-$(CONFIG_NOFORMAT_FILTER)               += vf_format.o
 OBJS-$(CONFIG_NULL_FILTER)                   += vf_null.o
 OBJS-$(CONFIG_OCV_SMOOTH_FILTER)             += vf_libopencv.o

libavfilter/allfilters.c

@@ -48,6 +48,7 @@ void avfilter_register_all(void)
     REGISTER_FILTER (FORMAT,      format,      vf);
     REGISTER_FILTER (FREI0R,      frei0r,      vf);
     REGISTER_FILTER (HFLIP,       hflip,       vf);
+    REGISTER_FILTER (HQDN3D,      hqdn3d,      vf);
     REGISTER_FILTER (NOFORMAT,    noformat,    vf);
     REGISTER_FILTER (NULL,        null,        vf);
     REGISTER_FILTER (OCV_SMOOTH,  ocv_smooth,  vf);

libavfilter/avfilter.h

@@ -25,8 +25,8 @@
 #include "libavutil/avutil.h"
 
 #define LIBAVFILTER_VERSION_MAJOR  1
-#define LIBAVFILTER_VERSION_MINOR 67
-#define LIBAVFILTER_VERSION_MICRO  1
+#define LIBAVFILTER_VERSION_MINOR 68
+#define LIBAVFILTER_VERSION_MICRO  0
 
 #define LIBAVFILTER_VERSION_INT AV_VERSION_INT(LIBAVFILTER_VERSION_MAJOR, \
                                                LIBAVFILTER_VERSION_MINOR, \