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Code Issues Releases Activity

Give parameters of do_hybrid_window() more meaningful names

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Originally committed as revision 14358 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Vitor Sessak 2008-07-24 03:28:01 +00:00
parent 427981c7a6
commit 0f72a2b7d3
1 changed files with 15 additions and 12 deletions
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27
libavcodec/ra288.c
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@ -137,8 +137,9 @@ static void prodsum(float *tgt, const float *src, int len, int n)
}
static void do_hybrid_window(int n, int i, int j, const float *in, float *out, float *st1,
float *st2, const float *table)
static void do_hybrid_window(int order, int n, int non_rec, const float *in,
float *out, float *hist, float *out2,
const float *window)
{
unsigned int x;
float buffer1[37];
@ -146,17 +147,17 @@ static void do_hybrid_window(int n, int i, int j, const float *in, float *out, f
float work[111];
/* rotate and multiply */
memmove(st1 , st1 + i, (n + j)*sizeof(*st1));
memcpy (st1 + n + j, in , i *sizeof(*st1));
memmove(hist , hist + n, (order + non_rec)*sizeof(*hist));
memcpy (hist + order + non_rec, in , n *sizeof(*hist));
colmult(work, table, st1, n + i + j);
colmult(work, window, hist, order + n + non_rec);
prodsum(buffer1, work + n , i, n);
prodsum(buffer2, work + n + i, j, n);
prodsum(buffer1, work + order , n , order);
prodsum(buffer2, work + order + n, non_rec, order);
for (x=0; x <= n; x++) {
st2[x] = st2[x] * 0.5625 + buffer1[x];
out[x] = st2[x] + buffer2[x];
for (x=0; x <= order; x++) {
out2[x] = out2[x] * 0.5625 + buffer1[x];
out [x] = out2[x] + buffer2[x];
}
/* Multiply by the white noise correcting factor (WNCF) */
@ -171,7 +172,8 @@ static void update(Real288_internal *glob)
memcpy(buffer1 , glob->output + 20, 20*sizeof(*buffer1));
memcpy(buffer1 + 20, glob->output , 20*sizeof(*buffer1));
do_hybrid_window(36, 40, 35, buffer1, temp1, glob->st1a, glob->st1b, table1);
do_hybrid_window(36, 40, 35, buffer1, temp1, glob->st1a, glob->st1b,
table1);
if (pred(temp1, glob->st1, 36))
colmult(glob->pr1, glob->st1, table1a, 36);
@ -179,7 +181,8 @@ static void update(Real288_internal *glob)
memcpy(buffer2 , glob->history + 4, 4*sizeof(*buffer2));
memcpy(buffer2 + 4, glob->history , 4*sizeof(*buffer2));
do_hybrid_window(10, 8, 20, buffer2, temp2, glob->st2a, glob->st2b, table2);
do_hybrid_window(10, 8, 20, buffer2, temp2, glob->st2a, glob->st2b,
table2);
if (pred(temp2, glob->st2, 10))
colmult(glob->pr2, glob->st2, table2a, 10);