videolan/ffmpeg
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Rename co() function to the much more descriptive name of

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do_hybrid_window(). Also change a misleading and wrong comment.

Originally committed as revision 14357 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Vitor Sessak 2008-07-24 03:23:51 +00:00
parent 5ab3d66fe5
commit 427981c7a6
1 changed files with 6 additions and 4 deletions
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10
libavcodec/ra288.c
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@ -137,7 +137,7 @@ static void prodsum(float *tgt, const float *src, int len, int n)
}
static void co(int n, int i, int j, const float *in, float *out, float *st1,
static void do_hybrid_window(int n, int i, int j, const float *in, float *out, float *st1,
float *st2, const float *table)
{
unsigned int x;
@ -158,7 +158,9 @@ static void co(int n, int i, int j, const float *in, float *out, float *st1,
st2[x] = st2[x] * 0.5625 + buffer1[x];
out[x] = st2[x] + buffer2[x];
}
*out *= 257./256.; /* to prevent clipping */
/* Multiply by the white noise correcting factor (WNCF) */
*out *= 257./256.;
}
static void update(Real288_internal *glob)
@ -169,7 +171,7 @@ static void update(Real288_internal *glob)
memcpy(buffer1 , glob->output + 20, 20*sizeof(*buffer1));
memcpy(buffer1 + 20, glob->output , 20*sizeof(*buffer1));
co(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);
@ -177,7 +179,7 @@ static void update(Real288_internal *glob)
memcpy(buffer2 , glob->history + 4, 4*sizeof(*buffer2));
memcpy(buffer2 + 4, glob->history , 4*sizeof(*buffer2));
co(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);