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Some work on index packing

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This commit is contained in:
Jean-Marc Valin 2007-12-06 15:39:38 +11:00
parent bc5cedf26f
commit 29ccab8aac
5 changed files with 16 additions and 8 deletions
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7
libcelt/bands.c
View file

@ -146,7 +146,7 @@ void pitch_quant_bands(const CELTMode *m, float *X, float *P, float *gains)
P[i] = 0;
}
void quant_bands(const CELTMode *m, float *X, float *P)
void quant_bands(const CELTMode *m, float *X, float *P, ec_enc *enc)
{
int i, j, B;
const int *eBands = m->eBands;
@ -156,11 +156,12 @@ void quant_bands(const CELTMode *m, float *X, float *P)
for (i=0;i<m->nbEBands;i++)
{
int q;
int q, id;
q = m->nbPulses[i];
if (q>0) {
float n = sqrt(B*(eBands[i+1]-eBands[i]));
alg_quant2(X+B*eBands[i], B*(eBands[i+1]-eBands[i]), q, P+B*eBands[i]);
id = alg_quant2(X+B*eBands[i], B*(eBands[i+1]-eBands[i]), q, P+B*eBands[i]);
ec_enc_uint(enc,id,ncwrs(B*(eBands[i+1]-eBands[i]), q));
for (j=B*eBands[i];j<B*eBands[i+1];j++)
norm[j] = X[j] * n;
//bits += log2(ncwrs(B*(eBands[i+1]-eBands[i]), q));

4
libcelt/bands.h
View file

@ -32,7 +32,9 @@
#ifndef BANDS_H
#define BANDS_H
#include "modes.h"
#include "entenc.h"
void compute_band_energies(const CELTMode *m, float *X, float *bands);
@ -44,7 +46,7 @@ void compute_pitch_gain(const CELTMode *m, float *X, float *P, float *gains, flo
void pitch_quant_bands(const CELTMode *m, float *X, float *P, float *gains);
void quant_bands(const CELTMode *m, float *X, float *P);
void quant_bands(const CELTMode *m, float *X, float *P, ec_enc *enc);
void pitch_renormalise_bands(const CELTMode *m, float *X, float *P);

4
libcelt/celt.c
View file

@ -235,7 +235,7 @@ int celt_encode(CELTState *st, short *pcm)
sum += X[i]*X[i];
printf ("%f\n", sum);*/
/* Residual quantisation */
quant_bands(st->mode, X, P);
quant_bands(st->mode, X, P, &st->enc);
/* Synthesis */
denormalise_bands(st->mode, X, bandE);
@ -267,7 +267,7 @@ int celt_encode(CELTState *st, short *pcm)
pcm[i*N+j] = (short)floor(.5+tmp);
}
}
printf ("%d\n", ec_byte_bytes(&st->buf));
return 0;
}

7
libcelt/vq.c
View file

@ -31,6 +31,7 @@
#include <math.h>
#include <stdlib.h>
#include "cwrs.h"
/* Algebraic pulse-base quantiser. The signal x is replaced by the sum of the pitch
a combination of pulses such that its norm is still equal to 1 */
@ -94,7 +95,7 @@ void alg_quant(float *x, int N, int K, float *p)
/* Improved algebraic pulse-base quantiser. The signal x is replaced by the sum of the pitch
a combination of pulses such that its norm is still equal to 1. The only difference with
the quantiser above is that the search is more complete. */
void alg_quant2(float *x, int N, int K, float *p)
int alg_quant2(float *x, int N, int K, float *p)
{
int L = 5;
//float tata[200];
@ -236,6 +237,10 @@ void alg_quant2(float *x, int N, int K, float *p)
for (i=0;i<N;i++)
x[i] *= E;
}
int comb[K];
int signs[K];
pulse2comb(N, K, comb, signs, iy[0]);
return icwrs(N, K, comb, signs);
}
/* Just replace the band with noise of unit energy */

2
libcelt/vq.h
View file

@ -39,7 +39,7 @@ void alg_quant(float *x, int N, int K, float *p);
/* Improved algebraic pulse-base quantiser. The signal x is replaced by the sum of the pitch
a combination of pulses such that its norm is still equal to 1. The only difference with
the quantiser above is that the search is more complete. */
void alg_quant2(float *x, int N, int K, float *p);
int alg_quant2(float *x, int N, int K, float *p);
/* Just replace the band with noise of unit energy */
void noise_quant(float *x, int N, int K, float *p);