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Avoid re-reading the source sample to duplicate, to avoid pointer aliasing

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This commit is contained in:
Chris Robinson 2012-12-15 02:33:59 -08:00
parent 62a995d492
commit b41a77648e
1 changed files with 6 additions and 3 deletions
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9
apps/openmw/mwrender/videoplayer.cpp
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@ -439,18 +439,21 @@ public:
memset(stream, *mFrame->data[0], len1);
else if(n == 2)
{
const int16_t val = *((int16_t*)mFrame->data[0]);
for(size_t nb = 0;nb < len1;nb += n)
*((int16_t*)(stream+nb)) = *((int16_t*)mFrame->data[0]);
*((int16_t*)(stream+nb)) = val;
}
else if(n == 4)
{
const int32_t val = *((int32_t*)mFrame->data[0]);
for(size_t nb = 0;nb < len1;nb += n)
*((int32_t*)(stream+nb)) = *((int32_t*)mFrame->data[0]);
*((int32_t*)(stream+nb)) = val;
}
else if(n == 8)
{
const int64_t val = *((int64_t*)mFrame->data[0]);
for(size_t nb = 0;nb < len1;nb += n)
*((int64_t*)(stream+nb)) = *((int64_t*)mFrame->data[0]);
*((int64_t*)(stream+nb)) = val;
}
else
{