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A GIF color map cannot have more than 256 colors

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This commit is contained in:
David Capello 2015-07-17 12:57:32 -03:00
parent ae2f04f855
commit 65fe7dbccf
1 changed files with 3 additions and 0 deletions
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3
src/app/file/gif_format.cpp
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@ -658,6 +658,9 @@ bool GifFormat::onLoad(FileOp* fop)
#ifdef ENABLE_SAVE
static int next_power_of_two(int color_map_size)
{
if (color_map_size > 256)
return 256;
for (int i = 30; i >= 0; --i) {
if (color_map_size & (1 << i)) {
color_map_size = (1 << (i + (color_map_size & (1 << (i - 1)) ? 1: 0)));