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Simplify co(), use memcpy/memmove and colmult() when useful. 

Originally committed as revision 14355 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Vitor Sessak 2008-07-24 03:19:52 +00:00
parent a149c1a59f
commit bf75ac57b8
1 changed files with 4 additions and 8 deletions
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12
libavcodec/ra288.c
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@ -141,19 +141,15 @@ static void co(int n, int i, int j, const float *in, float *out, float *st1,
float *st2, const float *table) float *st2, const float *table)
{ {
unsigned int x; unsigned int x;
const float *fp;
float buffer1[37]; float buffer1[37];
float buffer2[37]; float buffer2[37];
float work[111]; float work[111];
/* rotate and multiply */ /* rotate and multiply */
fp = st1 + i; memmove(st1 , st1 + i, (n + j)*sizeof(*st1));
for (x=0; x < n + i + j; x++) { memcpy (st1 + n + j, in , i *sizeof(*st1));
if (x == n + j)
fp=in; colmult(work, table, st1, n + i + j);
st1[x] = *(fp++);
work[x] = table[x] * st1[x];
}
prodsum(buffer1, work + n , i, n); prodsum(buffer1, work + n , i, n);
prodsum(buffer2, work + n + i, j, n); prodsum(buffer2, work + n + i, j, n);