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https://github.com/xiph/opus.git
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Fix for folding_decision() in stereo mode and more cleaning up of the code
now that we no longer do normalized pitch
This commit is contained in:
Jean-Marc Valin
parent
7013db7ca4
commit
d5e5436e07
6 changed files with 50 additions and 73 deletions
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@ -377,23 +377,26 @@ void deinterleave(celt_norm_t *x, int N)
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int folding_decision(const CELTMode *m, celt_norm_t *X, celt_word16_t *average, int *last_decision)
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{
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int i;
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int i, c;
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int NR=0;
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celt_word32_t ratio = EPSILON;
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const int C = CHANNELS(m);
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const celt_int16_t * restrict eBands = m->eBands;
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for (c=0;c<C;c++)
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{
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for (i=0;i<m->nbEBands;i++)
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{
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int j, N;
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int max_i=0;
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celt_word16_t max_val=EPSILON;
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celt_word32_t floor_ener=EPSILON;
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celt_norm_t * restrict x = X+eBands[i];
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celt_norm_t * restrict x = X+C*eBands[i]+c;
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N = eBands[i+1]-eBands[i];
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for (j=0;j<N;j++)
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{
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if (ABS16(x[j])>max_val)
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if (ABS16(x[C*j])>max_val)
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{
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max_val = ABS16(x[j]);
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max_val = ABS16(x[C*j]);
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max_i = j;
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}
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}
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@ -406,13 +409,13 @@ int folding_decision(const CELTMode *m, celt_norm_t *X, celt_word16_t *average,
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#else
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floor_ener = QCONST32(1.,28)-MULT16_16(max_val,max_val);
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if (max_i < N-1)
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floor_ener -= MULT16_16(x[max_i+1], x[max_i+1]);
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floor_ener -= MULT16_16(x[C*(max_i+1)], x[C*(max_i+1)]);
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if (max_i < N-2)
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floor_ener -= MULT16_16(x[max_i+2], x[max_i+2]);
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floor_ener -= MULT16_16(x[C*(max_i+2)], x[C*(max_i+2)]);
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if (max_i > 0)
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floor_ener -= MULT16_16(x[max_i-1], x[max_i-1]);
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floor_ener -= MULT16_16(x[C*(max_i-1)], x[C*(max_i-1)]);
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if (max_i > 1)
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floor_ener -= MULT16_16(x[max_i-2], x[max_i-2]);
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floor_ener -= MULT16_16(x[C*(max_i-2)], x[C*(max_i-2)]);
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floor_ener = MAX32(floor_ener, EPSILON);
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#endif
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if (N>7)
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@ -425,6 +428,7 @@ int folding_decision(const CELTMode *m, celt_norm_t *X, celt_word16_t *average,
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NR++;
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}
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}
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}
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if (NR>0)
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ratio = DIV32_16(ratio, NR);
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ratio = ADD32(HALF32(ratio), HALF32(*average));
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@ -439,7 +443,7 @@ int folding_decision(const CELTMode *m, celt_norm_t *X, celt_word16_t *average,
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}
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/* Quantisation of the residual */
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void quant_bands(const CELTMode *m, celt_norm_t * restrict X, celt_norm_t *P, const celt_ener_t *bandE, int *pulses, int shortBlocks, int fold, int total_bits, ec_enc *enc)
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void quant_bands(const CELTMode *m, celt_norm_t * restrict X, const celt_ener_t *bandE, int *pulses, int shortBlocks, int fold, int total_bits, ec_enc *enc)
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{
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int i, j, remaining_bits, balance;
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const celt_int16_t * restrict eBands = m->eBands;
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@ -493,7 +497,7 @@ void quant_bands(const CELTMode *m, celt_norm_t * restrict X, celt_norm_t *P, co
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int spread = fold ? B : 0;
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alg_quant(X+eBands[i], eBands[i+1]-eBands[i], q, spread, enc);
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} else {
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intra_fold(m, X+eBands[i], eBands[i+1]-eBands[i], norm, X+eBands[i], eBands[i], B);
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intra_fold(m, eBands[i+1]-eBands[i], norm, X+eBands[i], eBands[i], B);
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}
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for (j=eBands[i];j<eBands[i+1];j++)
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norm[j] = MULT16_16_Q15(n,X[j]);
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@ -503,7 +507,7 @@ void quant_bands(const CELTMode *m, celt_norm_t * restrict X, celt_norm_t *P, co
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#ifndef DISABLE_STEREO
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void quant_bands_stereo(const CELTMode *m, celt_norm_t * restrict X, celt_norm_t *P, const celt_ener_t *bandE, int *pulses, int shortBlocks, int fold, int total_bits, ec_enc *enc)
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void quant_bands_stereo(const CELTMode *m, celt_norm_t * restrict X, const celt_ener_t *bandE, int *pulses, int shortBlocks, int fold, int total_bits, ec_enc *enc)
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{
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int i, j, remaining_bits, balance;
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const celt_int16_t * restrict eBands = m->eBands;
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@ -515,7 +519,7 @@ void quant_bands_stereo(const CELTMode *m, celt_norm_t * restrict X, celt_norm_t
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SAVE_STACK;
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B = shortBlocks ? m->nbShortMdcts : 1;
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ALLOC(_norm, C*eBands[m->nbEBands+1], celt_norm_t);
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ALLOC(_norm, eBands[m->nbEBands+1], celt_norm_t);
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norm = _norm;
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balance = 0;
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@ -680,19 +684,13 @@ void quant_bands_stereo(const CELTMode *m, celt_norm_t * restrict X, celt_norm_t
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remaining_bits -= curr_bits;
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}
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/* If pitch isn't available, use intra-frame prediction */
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if (q1==0)
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{
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intra_fold(m, X+C*eBands[i], eBands[i+1]-eBands[i], norm, P+C*eBands[i], eBands[i], B);
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deinterleave(P+C*eBands[i], C*N);
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}
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deinterleave(X+C*eBands[i], C*N);
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if (q1 > 0) {
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int spread = fold ? B : 0;
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alg_quant(X+C*eBands[i], N, q1, spread, enc);
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} else
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for (j=C*eBands[i];j<C*eBands[i]+N;j++)
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X[j] = P[j];
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} else {
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intra_fold(m, eBands[i+1]-eBands[i], norm, X+C*eBands[i], eBands[i], B);
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}
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if (q2 > 0) {
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int spread = fold ? B : 0;
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alg_quant(X+C*eBands[i]+N, N, q2, spread, enc);
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@ -710,9 +708,8 @@ void quant_bands_stereo(const CELTMode *m, celt_norm_t * restrict X, celt_norm_t
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mid = (1./32768)*imid;
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side = (1./32768)*iside;
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#endif
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for (c=0;c<C;c++)
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for (j=0;j<N;j++)
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norm[C*(eBands[i]+j)+c] = MULT16_16_Q15(n,X[C*eBands[i]+c*N+j]);
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for (j=0;j<N;j++)
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norm[eBands[i]+j] = MULT16_16_Q15(n,X[C*eBands[i]+j]);
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for (j=0;j<N;j++)
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X[C*eBands[i]+j] = MULT16_16_Q15(X[C*eBands[i]+j], mid);
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@ -731,7 +728,7 @@ void quant_bands_stereo(const CELTMode *m, celt_norm_t * restrict X, celt_norm_t
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#endif /* DISABLE_STEREO */
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/* Decoding of the residual */
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void unquant_bands(const CELTMode *m, celt_norm_t * restrict X, celt_norm_t *P, const celt_ener_t *bandE, int *pulses, int shortBlocks, int fold, int total_bits, ec_dec *dec)
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void unquant_bands(const CELTMode *m, celt_norm_t * restrict X, const celt_ener_t *bandE, int *pulses, int shortBlocks, int fold, int total_bits, ec_dec *dec)
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{
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int i, j, remaining_bits, balance;
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const celt_int16_t * restrict eBands = m->eBands;
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@ -785,7 +782,7 @@ void unquant_bands(const CELTMode *m, celt_norm_t * restrict X, celt_norm_t *P,
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int spread = fold ? B : 0;
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alg_unquant(X+eBands[i], eBands[i+1]-eBands[i], q, spread, dec);
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} else {
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intra_fold(m, X+eBands[i], eBands[i+1]-eBands[i], norm, X+eBands[i], eBands[i], B);
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intra_fold(m, eBands[i+1]-eBands[i], norm, X+eBands[i], eBands[i], B);
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}
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for (j=eBands[i];j<eBands[i+1];j++)
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norm[j] = MULT16_16_Q15(n,X[j]);
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@ -795,7 +792,7 @@ void unquant_bands(const CELTMode *m, celt_norm_t * restrict X, celt_norm_t *P,
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#ifndef DISABLE_STEREO
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void unquant_bands_stereo(const CELTMode *m, celt_norm_t * restrict X, celt_norm_t *P, const celt_ener_t *bandE, int *pulses, int shortBlocks, int fold, int total_bits, ec_dec *dec)
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void unquant_bands_stereo(const CELTMode *m, celt_norm_t * restrict X, const celt_ener_t *bandE, int *pulses, int shortBlocks, int fold, int total_bits, ec_dec *dec)
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{
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int i, j, remaining_bits, balance;
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const celt_int16_t * restrict eBands = m->eBands;
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@ -807,7 +804,7 @@ void unquant_bands_stereo(const CELTMode *m, celt_norm_t * restrict X, celt_norm
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SAVE_STACK;
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B = shortBlocks ? m->nbShortMdcts : 1;
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ALLOC(_norm, C*eBands[m->nbEBands+1], celt_norm_t);
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ALLOC(_norm, eBands[m->nbEBands+1], celt_norm_t);
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norm = _norm;
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balance = 0;
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@ -953,23 +950,14 @@ void unquant_bands_stereo(const CELTMode *m, celt_norm_t * restrict X, celt_norm
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}
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remaining_bits -= curr_bits;
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}
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/* If pitch isn't available, use intra-frame prediction */
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if (q1==0)
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{
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intra_fold(m, X+C*eBands[i], eBands[i+1]-eBands[i], norm, P+C*eBands[i], eBands[i], B);
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deinterleave(P+C*eBands[i], C*N);
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}
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deinterleave(X+C*eBands[i], C*N);
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if (q1 > 0)
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{
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int spread = fold ? B : 0;
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alg_unquant(X+C*eBands[i], N, q1, spread, dec);
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} else
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for (j=C*eBands[i];j<C*eBands[i]+N;j++)
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X[j] = P[j];
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intra_fold(m, eBands[i+1]-eBands[i], norm, X+C*eBands[i], eBands[i], B);
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if (q2 > 0)
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{
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int spread = fold ? B : 0;
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@ -988,9 +976,8 @@ void unquant_bands_stereo(const CELTMode *m, celt_norm_t * restrict X, celt_norm
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mid = (1./32768)*imid;
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side = (1./32768)*iside;
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#endif
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for (c=0;c<C;c++)
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for (j=0;j<N;j++)
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norm[C*(eBands[i]+j)+c] = MULT16_16_Q15(n,X[C*eBands[i]+c*N+j]);
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for (j=0;j<N;j++)
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norm[eBands[i]+j] = MULT16_16_Q15(n,X[C*eBands[i]+j]);
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for (j=0;j<N;j++)
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X[C*eBands[i]+j] = MULT16_16_Q15(X[C*eBands[i]+j], mid);
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@ -87,9 +87,9 @@ int folding_decision(const CELTMode *m, celt_norm_t *X, celt_word16_t *average,
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* @param total_bits Total number of bits that can be used for the frame (including the ones already spent)
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* @param enc Entropy encoder
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*/
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void quant_bands(const CELTMode *m, celt_norm_t * restrict X, celt_norm_t *P, const celt_ener_t *bandE, int *pulses, int time_domain, int fold, int total_bits, ec_enc *enc);
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void quant_bands(const CELTMode *m, celt_norm_t * restrict X, const celt_ener_t *bandE, int *pulses, int time_domain, int fold, int total_bits, ec_enc *enc);
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void quant_bands_stereo(const CELTMode *m, celt_norm_t * restrict X, celt_norm_t *P, const celt_ener_t *bandE, int *pulses, int time_domain, int fold, int total_bits, ec_enc *enc);
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void quant_bands_stereo(const CELTMode *m, celt_norm_t * restrict X, const celt_ener_t *bandE, int *pulses, int time_domain, int fold, int total_bits, ec_enc *enc);
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/** Decoding of the residual spectrum
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* @param m Mode data
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@ -98,9 +98,9 @@ void quant_bands_stereo(const CELTMode *m, celt_norm_t * restrict X, celt_norm_t
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* @param total_bits Total number of bits that can be used for the frame (including the ones already spent)
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* @param dec Entropy decoder
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*/
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void unquant_bands(const CELTMode *m, celt_norm_t * restrict X, celt_norm_t *P, const celt_ener_t *bandE, int *pulses, int time_domain, int fold, int total_bits, ec_dec *dec);
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void unquant_bands(const CELTMode *m, celt_norm_t * restrict X, const celt_ener_t *bandE, int *pulses, int time_domain, int fold, int total_bits, ec_dec *dec);
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void unquant_bands_stereo(const CELTMode *m, celt_norm_t * restrict X, celt_norm_t *P, const celt_ener_t *bandE, int *pulses, int time_domain, int fold, int total_bits, ec_dec *dec);
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void unquant_bands_stereo(const CELTMode *m, celt_norm_t * restrict X, const celt_ener_t *bandE, int *pulses, int time_domain, int fold, int total_bits, ec_dec *dec);
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void stereo_decision(const CELTMode *m, celt_norm_t * restrict X, int *stereo_mode, int len);
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@ -506,7 +506,6 @@ int celt_encode_float(CELTEncoder * restrict st, const celt_sig_t * pcm, celt_si
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VARDECL(celt_sig_t, freq);
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VARDECL(celt_sig_t, pitch_freq);
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VARDECL(celt_norm_t, X);
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VARDECL(celt_norm_t, P);
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VARDECL(celt_ener_t, bandE);
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VARDECL(celt_word16_t, bandLogE);
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VARDECL(int, fine_quant);
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@ -674,7 +673,6 @@ int celt_encode_float(CELTEncoder * restrict st, const celt_sig_t * pcm, celt_si
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/* Deferred allocation after find_spectral_pitch() to reduce
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the peak memory usage */
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ALLOC(X, C*N, celt_norm_t); /**< Interleaved normalised MDCTs */
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ALLOC(P, C*N, celt_norm_t); /**< Interleaved normalised pitch MDCTs*/
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ALLOC(pitch_freq, C*N, celt_sig_t); /**< Interleaved signal MDCTs */
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if (has_pitch)
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@ -709,9 +707,6 @@ int celt_encode_float(CELTEncoder * restrict st, const celt_sig_t * pcm, celt_si
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{
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ec_enc_uint(&enc, pitch_index, MAX_PERIOD-(2*N-2*N4));
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ec_enc_uint(&enc, gain_id, 16);
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} else {
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for (i=0;i<C*N;i++)
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P[i] = 0;
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}
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if (shortBlocks)
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{
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@ -769,10 +764,10 @@ int celt_encode_float(CELTEncoder * restrict st, const celt_sig_t * pcm, celt_si
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/* Residual quantisation */
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if (C==1)
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quant_bands(st->mode, X, P, bandE, pulses, shortBlocks, has_fold, nbCompressedBytes*8, &enc);
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quant_bands(st->mode, X, bandE, pulses, shortBlocks, has_fold, nbCompressedBytes*8, &enc);
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#ifndef DISABLE_STEREO
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else
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quant_bands_stereo(st->mode, X, P, bandE, pulses, shortBlocks, has_fold, nbCompressedBytes*8, &enc);
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quant_bands_stereo(st->mode, X, bandE, pulses, shortBlocks, has_fold, nbCompressedBytes*8, &enc);
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#endif
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quant_energy_finalise(st->mode, bandE, st->oldBandE, error, fine_quant, fine_priority, nbCompressedBytes*8-ec_enc_tell(&enc, 0), &enc);
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@ -1205,7 +1200,6 @@ int celt_decode_float(CELTDecoder * restrict st, const unsigned char *data, int
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VARDECL(celt_sig_t, freq);
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VARDECL(celt_sig_t, pitch_freq);
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VARDECL(celt_norm_t, X);
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VARDECL(celt_norm_t, P);
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VARDECL(celt_ener_t, bandE);
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VARDECL(int, fine_quant);
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VARDECL(int, pulses);
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@ -1236,7 +1230,6 @@ int celt_decode_float(CELTDecoder * restrict st, const unsigned char *data, int
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ALLOC(freq, C*N, celt_sig_t); /**< Interleaved signal MDCTs */
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ALLOC(X, C*N, celt_norm_t); /**< Interleaved normalised MDCTs */
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ALLOC(P, C*N, celt_norm_t); /**< Interleaved normalised pitch MDCTs*/
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ALLOC(bandE, st->mode->nbEBands*C, celt_ener_t);
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if (data == NULL)
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@ -1309,10 +1302,10 @@ int celt_decode_float(CELTDecoder * restrict st, const unsigned char *data, int
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/* Decode fixed codebook and merge with pitch */
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if (C==1)
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unquant_bands(st->mode, X, P, bandE, pulses, shortBlocks, has_fold, len*8, &dec);
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unquant_bands(st->mode, X, bandE, pulses, shortBlocks, has_fold, len*8, &dec);
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#ifndef DISABLE_STEREO
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else
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unquant_bands_stereo(st->mode, X, P, bandE, pulses, shortBlocks, has_fold, len*8, &dec);
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unquant_bands_stereo(st->mode, X, bandE, pulses, shortBlocks, has_fold, len*8, &dec);
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#endif
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unquant_energy_finalise(st->mode, bandE, st->oldBandE, fine_quant, fine_priority, len*8-ec_dec_tell(&dec, 0), &dec);
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@ -124,8 +124,8 @@ static celt_int16_t *compute_ebands(celt_int32_t Fs, int frame_size, int nbShort
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celt_int16_t *eBands;
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int i, res, min_width, lin, low, high, nBark;
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//if (min_bins < nbShortMdcts)
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// min_bins = nbShortMdcts;
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/*if (min_bins < nbShortMdcts)
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min_bins = nbShortMdcts;*/
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res = (Fs+frame_size)/(2*frame_size);
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||||
min_width = min_bins*res;
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||||
|
||||
|
|
|
|||
25
libcelt/vq.c
25
libcelt/vq.c
|
|
@ -40,6 +40,10 @@
|
|||
#include "os_support.h"
|
||||
#include "rate.h"
|
||||
|
||||
#ifndef M_PI
|
||||
#define M_PI 3.141592653
|
||||
#endif
|
||||
|
||||
static void exp_rotation(celt_norm_t *X, int len, int dir, int stride, int K)
|
||||
{
|
||||
int i, k, iter;
|
||||
|
|
@ -339,11 +343,10 @@ celt_word16_t renormalise_vector(celt_norm_t *X, celt_word16_t value, int N, int
|
|||
return rE;
|
||||
}
|
||||
|
||||
static void fold(const CELTMode *m, int N, celt_norm_t *Y, celt_norm_t * restrict P, int N0, int B)
|
||||
static void fold(const CELTMode *m, int N, const celt_norm_t * restrict Y, celt_norm_t * restrict P, int N0, int B)
|
||||
{
|
||||
int j;
|
||||
const int C = CHANNELS(m);
|
||||
int id = (N0*C) % (C*B);
|
||||
int id = N0 % B;
|
||||
/* Here, we assume that id will never be greater than N0, i.e. that
|
||||
no band is wider than N0. In the unlikely case it happens, we set
|
||||
everything to zero */
|
||||
|
|
@ -357,23 +360,17 @@ static void fold(const CELTMode *m, int N, celt_norm_t *Y, celt_norm_t * restric
|
|||
//printf ("%d\n", offset);
|
||||
id += offset;
|
||||
}*/
|
||||
if (id+C*N>N0*C)
|
||||
for (j=0;j<C*N;j++)
|
||||
if (id+N>N0)
|
||||
for (j=0;j<N;j++)
|
||||
P[j] = 0;
|
||||
else
|
||||
for (j=0;j<C*N;j++)
|
||||
for (j=0;j<N;j++)
|
||||
P[j] = Y[id++];
|
||||
}
|
||||
|
||||
void intra_fold(const CELTMode *m, celt_norm_t * restrict x, int N, celt_norm_t *Y, celt_norm_t * restrict P, int N0, int B)
|
||||
void intra_fold(const CELTMode *m, int N, const celt_norm_t * restrict Y, celt_norm_t * restrict P, int N0, int B)
|
||||
{
|
||||
int c;
|
||||
const int C = CHANNELS(m);
|
||||
|
||||
fold(m, N, Y, P, N0, B);
|
||||
c=0;
|
||||
do {
|
||||
renormalise_vector(P+c, Q15ONE, N, C);
|
||||
} while (++c < C);
|
||||
renormalise_vector(P, Q15ONE, N, 1);
|
||||
}
|
||||
|
||||
|
|
|
|||
|
|
@ -74,6 +74,6 @@ celt_word16_t renormalise_vector(celt_norm_t *X, celt_word16_t value, int N, int
|
|||
* @param B Stride (number of channels multiplied by the number of MDCTs per frame)
|
||||
* @param N0 Number of valid offsets
|
||||
*/
|
||||
void intra_fold(const CELTMode *m, celt_norm_t * restrict x, int N, celt_norm_t *Y, celt_norm_t * restrict P, int N0, int B);
|
||||
void intra_fold(const CELTMode *m, int N, const celt_norm_t * restrict Y, celt_norm_t * restrict P, int N0, int B);
|
||||
|
||||
#endif /* VQ_H */
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue