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minor optimisation+tuning of vq search

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This commit is contained in:
Jean-Marc Valin 2008-02-12 23:00:18 +11:00
parent 636f5c86ab
commit ac1e03d78e
2 changed files with 21 additions and 5 deletions
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10
libcelt/vq.c
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@ -115,10 +115,11 @@ void alg_quant(float *x, float *W, int N, int K, float *p, float alpha, ec_enc *
for (j=0;j<N;j++)
{
int sign;
//if (x[j]>0) sign=1; else sign=-1;
for (sign=-1;sign<=1;sign+=2)
{
/* All pulses at one location must have the same size */
if (iy[m][j]*sign < 0)
if (iy[m][j]*sign < 0 || (x[j]*sign<0 && pulsesLeft>((K+1)>>1)))
continue;
//fprintf (stderr, "%d/%d %d/%d %d/%d\n", i, K, m, L2, j, N);
float tmp_xy, tmp_yy, tmp_yp;
@ -200,6 +201,13 @@ void alg_quant(float *x, float *W, int N, int K, float *p, float alpha, ec_enc *
pulsesLeft -= pulsesAtOnce;
}
if (0) {
float err=0;
for (i=0;i<N;i++)
err += (x[i]-gain[0]*y[0][i])*(x[i]-gain[0]*y[0][i]);
//if (N<=10)
//printf ("%f %d %d\n", err, K, N);
}
for (i=0;i<N;i++)
x[i] = p[i]+gain[0]*y[0][i];
if (0) {