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* init table once

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Originally committed as revision 1203 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Zdenek Kabelac 2002-11-12 10:01:27 +00:00
parent 4555345704
commit 5abd509acd
1 changed files with 11 additions and 7 deletions
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18
libavcodec/dsputil.c
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@ -1344,16 +1344,20 @@ static void clear_blocks_c(DCTELEM *blocks)
void dsputil_init(DSPContext* c, unsigned mask)
{
static int init_done = 0;
int i;
for(i=0;i<256;i++) cropTbl[i + MAX_NEG_CROP] = i;
for(i=0;i<MAX_NEG_CROP;i++) {
cropTbl[i] = 0;
cropTbl[i + MAX_NEG_CROP + 256] = 255;
}
if (!init_done) {
for(i=0;i<256;i++) cropTbl[i + MAX_NEG_CROP] = i;
for(i=0;i<MAX_NEG_CROP;i++) {
cropTbl[i] = 0;
cropTbl[i + MAX_NEG_CROP + 256] = 255;
}
for(i=0;i<512;i++) {
squareTbl[i] = (i - 256) * (i - 256);
for(i=0;i<512;i++) {
squareTbl[i] = (i - 256) * (i - 256);
}
init_done = 1;
}
c->get_pixels = get_pixels_c;