Add video filter to convert side by side 3D streams to anaglyph images.

This can be tested on Wild Earth 3D on freebox streams in France.

configure.ac

@@ -618,7 +618,7 @@ AC_CHECK_FUNC(getopt_long,, [
 AC_SUBST(GNUGETOPT_LIBS)
 
 AC_CHECK_LIB(m,cos,[
-  VLC_ADD_LIBS([adjust wave ripple psychedelic gradient a52tofloat32 dtstofloat32 x264 goom visual panoramix rotate noise grain scene kate flac lua chorus_flanger freetype avcodec avformat access_avio swscale postproc i420_rgb faad twolame equalizer spatializer param_eq samplerate freetype mod mpc dmo mp4 quicktime realvideo qt4 compressor headphone_channel_mixer normvol audiobargraph_a speex mono colorthres extract ball access_imem hotkeys mosaic gaussianblur dbus x264 hqdn3d],[-lm])
+  VLC_ADD_LIBS([adjust wave ripple psychedelic gradient a52tofloat32 dtstofloat32 x264 goom visual panoramix rotate noise grain scene kate flac lua chorus_flanger freetype avcodec avformat access_avio swscale postproc i420_rgb faad twolame equalizer spatializer param_eq samplerate freetype mod mpc dmo mp4 quicktime realvideo qt4 compressor headphone_channel_mixer normvol audiobargraph_a speex mono colorthres extract ball access_imem hotkeys mosaic gaussianblur dbus x264 hqdn3d anaglyph],[-lm])
   LIBM="-lm"
 ], [
   LIBM=""

modules/video_filter/Modules.am

@@ -97,6 +97,7 @@ SOURCES_atmo = atmo/atmo.cpp \
 SOURCES_gradfun = gradfun.c gradfun.h
 SOURCES_subsdelay = subsdelay.c
 SOURCES_hqdn3d = hqdn3d.c hqdn3d.h
+SOURCES_anaglyph = anaglyph.c
 noinst_HEADERS = filter_picture.h
 
 libvlc_LTLIBRARIES += \
@@ -143,4 +144,5 @@ libvlc_LTLIBRARIES += \
 	libgradfun_plugin.la \
 	libyuvp_plugin.la \
 	libantiflicker_plugin.la \
-	libhqdn3d_plugin.la
+	libhqdn3d_plugin.la \
+	libanaglyph_plugin.la