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gifdec: make some constants unsigned

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fixes implicit type conversion when dealing with color types

Change-Id: Ie4f25e14d8bb2748050db4fca25147164fc6adb4
This commit is contained in:
James Zern 2016-10-31 17:51:27 -07:00
parent f048d38d38
commit fb52d4432a
1 changed files with 4 additions and 4 deletions
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8
examples/gifdec.c
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@ -21,8 +21,8 @@
#include "webp/encode.h"
#include "webp/mux_types.h"
#define GIF_TRANSPARENT_COLOR 0x00000000
#define GIF_WHITE_COLOR 0xffffffff
#define GIF_TRANSPARENT_COLOR 0x00000000u
#define GIF_WHITE_COLOR 0xffffffffu
#define GIF_TRANSPARENT_MASK 0x01
#define GIF_DISPOSE_MASK 0x07
#define GIF_DISPOSE_SHIFT 2
@ -48,7 +48,7 @@ void GIFGetBackgroundColor(const ColorMapObject* const color_map,
"white background.\n");
} else {
const GifColorType color = color_map->Colors[bgcolor_index];
*bgcolor = (0xff << 24)
*bgcolor = (0xffu << 24)
| (color.Red << 16)
| (color.Green << 8)
| (color.Blue << 0);
@ -94,7 +94,7 @@ static void Remap(const GifFileType* const gif, const uint8_t* const src,
for (i = 0; i < len; ++i) {
const GifColorType c = colors[src[i]];
dst[i] = (src[i] == transparent_index) ? GIF_TRANSPARENT_COLOR
: c.Blue | (c.Green << 8) | (c.Red << 16) | (0xff << 24);
: c.Blue | (c.Green << 8) | (c.Red << 16) | (0xffu << 24);
}
}