add libtheora-png_sizeof.patch to build libtheora with libpng-1.6.

component/ffmpeg/buildout.cfg

@@ -2,6 +2,7 @@
 extends = 
   ../bzip2/buildout.cfg
   ../libpng/buildout.cfg
+  ../patch/buildout.cfg
   ../pkgconfig/buildout.cfg
   ../zlib/buildout.cfg
 
@@ -28,16 +29,25 @@ environment =
   PATH=${pkgconfig:location}/bin:%(PATH)s
   PKG_CONFIG_PATH=${libogg:location}/lib/pkgconfig
 
+[libtheora-png_sizeof.patch]
+recipe = hexagonit.recipe.download
+url = ${:_profile_base_location_}/${:filename}
+filename = libtheora-png_sizeof.patch
+md5sum = eaa1454081b50f05b59495a12f52b0d5
+download-only = true
+
 [libtheora]
 recipe = slapos.recipe.cmmi
 url = http://downloads.xiph.org/releases/theora/libtheora-1.1.1.tar.bz2
 md5sum = 292ab65cedd5021d6b7ddd117e07cd8e
 depends =
   ${libpng:so_version}
+patches = ${libtheora-png_sizeof.patch:location}/${libtheora-png_sizeof.patch:filename}
+patch-options = -p1
 configure-options =
   --disable-static
 environment = 
-  PATH=${pkgconfig:location}/bin:%(PATH)s
+  PATH=${patch:location}/bin:${pkgconfig:location}/bin:%(PATH)s
   PKG_CONFIG_PATH=${libogg:location}/lib/pkgconfig:${libpng:location}/lib/pkgconfig:${libvorbis:location}/lib/pkgconfig
 
 [yasm]

component/ffmpeg/libtheora-png_sizeof.patch

+--- libtheora-1.1.1/examples/png2theora.c.orig        2009-08-23 03:14:04.000000000 +0900
++++ libtheora-1.1.1/examples/png2theora.c     2013-07-16 12:40:07.629087870 +0900
+@@ -462,9 +462,9 @@
+   png_set_strip_alpha(png_ptr);
+ 
+   row_data = (png_bytep)png_malloc(png_ptr,
+-    3*height*width*png_sizeof(*row_data));
++    3*height*width*sizeof(*row_data));
+   row_pointers = (png_bytep *)png_malloc(png_ptr,
+-    height*png_sizeof(*row_pointers));
++    height*sizeof(*row_pointers));
+   for(y = 0; y < height; y++) {
+     row_pointers[y] = row_data + y*(3*width);
+   }