diff options
Diffstat (limited to 'libs/libgui/png.c')
| -rw-r--r-- | libs/libgui/png.c | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/libs/libgui/png.c b/libs/libgui/png.c index 2ff3340..c405c3c 100644 --- a/libs/libgui/png.c +++ b/libs/libgui/png.c @@ -381,8 +381,10 @@ static long png_filesize(const char *filename) /* load file into buffer that already has the correct allocated size. Returns error code.*/ static u32 png_buffer_file(u8 *out, u32 size, const char *filename) { - u32 readsize; - readsize = read(filename, out, 0, size); + if (!out) + return 78; + + u32 readsize = read(filename, out, 0, size); if (readsize != size) return 78; @@ -3730,7 +3732,12 @@ static void getPixelColorRGBA8(u8 *r, u8 *g, u8 *b, u8 *a, const u8 *in, u32 i, 1U); /*highest possible value for this bit depth*/ u32 j = i * mode->bitdepth; u32 value = readBitsFromReversedStream(&j, in, mode->bitdepth); - *r = *g = *b = (value * 255) / highest; + + if (highest) + *r = *g = *b = (value * 255) / highest; + else + *r = *g = *b = value; + if (mode->key_defined && value == mode->key_r) *a = 0; else |