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Move code unrelated to lpc filtering out of lpc_filter()

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Originally committed as revision 13915 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Vitor Sessak
2008-06-23 20:05:42 +00:00
parent 5983d1c480
commit d5d3536dcb
1 changed files with 7 additions and 6 deletions
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13
libavcodec/ra144.c
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@@ -136,15 +136,11 @@ static void add_wav(int n, int skip_first, int *m, const int16_t *s1,
dest[i] = ((*(s1++))*v[0] + (*(s2++))*v[1] + (*(s3++))*v[2]) >> 12;
}
static void lpc_filter(const int16_t *lpc_coefs, const int16_t *adapt_coef,
uint16_t *statbuf, int len)
static void lpc_filter(const int16_t *lpc_coefs, uint16_t *statbuf, int len)
{
int x, i;
int16_t *ptr = statbuf;
memcpy(statbuf, statbuf + 40, 20);
memcpy(statbuf + 10, adapt_coef, len * 2);
for (i=0; i<len; i++) {
int sum = 0;
int new_val;
@@ -229,7 +225,12 @@ static void do_output_subblock(RA144Context *ractx,
add_wav(gain, cba_idx, m, buffer_a, cb1_vects[cb1_idx], cb2_vects[cb2_idx],
block);
lpc_filter(lpc_coefs, block, ractx->curr_sblock, BLOCKSIZE);
memcpy(ractx->curr_sblock, ractx->curr_sblock + 40,
10*sizeof(*ractx->curr_sblock));
memcpy(ractx->curr_sblock + 10, block,
BLOCKSIZE*sizeof(*ractx->curr_sblock));
lpc_filter(lpc_coefs, ractx->curr_sblock, BLOCKSIZE);
}
static void int_to_int16(int16_t *out, const int *inp)