opencv-old/libpng-1.4.patch

   1 diff -Naur OpenCV-2.0.0-orig/src/highgui/grfmt_png.cpp OpenCV-2.0.0/src/highgui/grfmt_png.cpp
   2 --- OpenCV-2.0.0-orig/src/highgui/grfmt_png.cpp 2010-01-21 01:08:46.000000000 -0500
   3 +++ OpenCV-2.0.0/src/highgui/grfmt_png.cpp      2010-01-21 01:13:11.000000000 -0500
   4 @@ -223,7 +223,7 @@
   5                  png_set_palette_to_rgb( png_ptr );
   6
   7              if( m_color_type == PNG_COLOR_TYPE_GRAY && m_bit_depth < 8 )
   8 -                png_set_gray_1_2_4_to_8( png_ptr );
   9 +                png_set_expand_gray_1_2_4_to_8( png_ptr );
  10
  11              if( CV_MAT_CN(m_type) > 1 && color )
  12                  png_set_bgr( png_ptr ); // convert RGB to BGR