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Energy is now Laplace-encoded (very poorly for now)

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This commit is contained in:
Jean-Marc Valin 2007-12-07 17:10:14 +11:00
parent 8143be3026
commit e38c7c18f7
4 changed files with 22 additions and 11 deletions
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14
libcelt/quant_bands.c
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@ -31,10 +31,9 @@
#include "quant_bands.h"
#include "laplace.h"
#include <math.h>
int dummy_qi[100];
void quant_energy(CELTMode *m, float *eBands, float *oldEBands, ec_enc *enc)
{
int i;
@ -51,11 +50,14 @@ void quant_energy(CELTMode *m, float *eBands, float *oldEBands, ec_enc *enc)
res = .25f*(i+3.f);
//res = 1;
qi = (int)floor(.5+(x-pred-prev)/res);
dummy_qi[i] = qi;
/*if (qi > 40)
qi = 40;
if (qi < -40)
qi = -40;*/
ec_laplace_encode(enc, qi, 15000);
q = qi*res;
//printf("%f %f ", pred+prev+q, x);
//printf("%d ", qi);
//printf("%f ", x-pred-prev);
oldEBands[i] = pred+prev+q;
@ -79,9 +81,8 @@ void unquant_energy(CELTMode *m, float *eBands, float *oldEBands, ec_dec *dec)
float pred = .7*oldEBands[i];
res = .25f*(i+3.f);
qi = dummy_qi[i];
qi = ec_laplace_decode(dec, 15000);
q = qi*res;
//printf("%f %f ", pred+prev+q, x);
//printf("%d ", qi);
//printf("%f ", x-pred-prev);
@ -92,4 +93,5 @@ void unquant_energy(CELTMode *m, float *eBands, float *oldEBands, ec_dec *dec)
eBands[i] = 0;
prev = (prev + .5*q);
}
//printf ("\n");
}