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PLC cleanup

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Pitch search can now go up to 720 samples
This commit is contained in:
Jean-Marc Valin 2011-05-13 17:24:25 -04:00
parent ba547467c0
commit 5f3d1afc05
1 changed files with 11 additions and 11 deletions
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22
libcelt/celt.c
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@ -317,13 +317,13 @@ static int transient_analysis(const celt_word32 * restrict in, int len, int C,
int is_transient = 0;
int block;
int N;
/* FIXME: Make that smaller */
celt_word16 bins[50];
VARDECL(celt_word16, bins);
SAVE_STACK;
ALLOC(tmp, len, celt_word16);
block = overlap/2;
N=len/block;
ALLOC(bins, N, celt_word16);
if (C==1)
{
for (i=0;i<len;i++)
@ -2106,15 +2106,15 @@ static void celt_decode_lost(CELTDecoder * restrict st, celt_word16 * restrict p
plc = 0;
} else if (st->loss_count == 0)
{
celt_word16 pitch_buf[MAX_PERIOD>>1];
int len2 = len;
/* FIXME: This is a kludge */
if (len2>MAX_PERIOD>>1)
len2 = MAX_PERIOD>>1;
pitch_downsample(out_mem, pitch_buf, MAX_PERIOD, C);
pitch_search(pitch_buf+((MAX_PERIOD-len2)>>1), pitch_buf, len2,
MAX_PERIOD-len2-100, &pitch_index);
pitch_index = MAX_PERIOD-len2-pitch_index;
celt_word16 pitch_buf[DECODE_BUFFER_SIZE>>1];
/* Corresponds to a min pitch of 67 Hz. It's possible to save CPU in this
search by using only part of the decode buffer */
int poffset = 720;
pitch_downsample(decode_mem, pitch_buf, DECODE_BUFFER_SIZE, C);
/* Max pitch is 100 samples (480 Hz) */
pitch_search(pitch_buf+((poffset)>>1), pitch_buf, DECODE_BUFFER_SIZE-poffset,
poffset-100, &pitch_index);
pitch_index = poffset-pitch_index;
st->last_pitch_index = pitch_index;
} else {
pitch_index = st->last_pitch_index;