diff options
Diffstat (limited to 'contrib/gregbook/readpng.c')
| -rw-r--r-- | contrib/gregbook/readpng.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/contrib/gregbook/readpng.c b/contrib/gregbook/readpng.c index abfc1fb4c..df42c301b 100644 --- a/contrib/gregbook/readpng.c +++ b/contrib/gregbook/readpng.c @@ -229,8 +229,14 @@ uch *readpng_get_image(double display_exponent, int *pChannels, ulg *pRowbytes) png_set_expand(png_ptr); if (png_get_valid(png_ptr, info_ptr, PNG_INFO_tRNS)) png_set_expand(png_ptr); +#ifdef PNG_READ_16_TO_8_SUPPORTED if (bit_depth == 16) +# ifdef PNG_READ_SCALE_16_TO_8_SUPPORTED + png_set_scale_16(png_ptr); +# else png_set_strip_16(png_ptr); +# endif +#endif if (color_type == PNG_COLOR_TYPE_GRAY || color_type == PNG_COLOR_TYPE_GRAY_ALPHA) png_set_gray_to_rgb(png_ptr); @@ -263,7 +269,8 @@ uch *readpng_get_image(double display_exponent, int *pChannels, ulg *pRowbytes) return NULL; } - Trace((stderr, "readpng_get_image: channels = %d, rowbytes = %ld, height = %ld\n", *pChannels, rowbytes, height)); + Trace((stderr, "readpng_get_image: channels = %d, rowbytes = %ld, height = %ld\n", + *pChannels, rowbytes, height)); /* set the individual row_pointers to point at the correct offsets */ |