mewin/libpng
1
0
Fork 0
mirror of https://git.code.sf.net/p/libpng/code.git synced 2025-07-10 18:04:09 +02:00
Code Issues Projects Releases Wiki Activity

[devel] Revised contrib/visupng, gregbook, and pngminim

Browse Source 
to demonstrate chop_16_to_8
This commit is contained in:
Glenn Randers-Pehrson
2011-06-16 09:08:53 -05:00
parent 5f0b9276ec
commit 850769f787
8 changed files with 27 additions and 5 deletions
Download Patch File Download Diff File Expand all files Collapse all files

10
contrib/visupng/PngFile.c
View File

@@ -175,8 +175,14 @@ BOOL PngLoadImage (PTSTR pstrFileName, png_byte **ppbImageData,
// expand images of all color-type and bit-depth to 3x8 bit RGB images
// let the library process things like alpha, transparency, background
if (iBitDepth == 16)
png_set_strip_16(png_ptr);
#ifdef PNG_READ_16_TO_8_SUPPORTED
if (iBitDepth == 16)
# ifdef PNG_READ_CHOP_16_TO_8_SUPPORTED
png_set_chop_16(png_ptr);
# else
png_set_strip_16(png_ptr);
# endif
#endif
if (iColorType == PNG_COLOR_TYPE_PALETTE)
png_set_expand(png_ptr);
if (iBitDepth < 8)