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diff --git a/src/libspeex/cb_search.c b/src/libspeex/cb_search.c
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+/* Copyright (C) 2002-2006 Jean-Marc Valin
+ File: cb_search.c
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions
+ are met:
+
+ - Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+
+ - Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+
+ - Neither the name of the Xiph.org Foundation nor the names of its
+ contributors may be used to endorse or promote products derived from
+ this software without specific prior written permission.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR
+ CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "cb_search.h"
+#include "filters.h"
+#include "stack_alloc.h"
+#include "vq.h"
+#include "arch.h"
+#include "math_approx.h"
+#include "os_support.h"
+
+#ifdef _USE_SSE
+#include "cb_search_sse.h"
+#elif defined(ARM4_ASM) || defined(ARM5E_ASM)
+#include "cb_search_arm4.h"
+#elif defined(BFIN_ASM)
+#include "cb_search_bfin.h"
+#endif
+
+#ifndef OVERRIDE_COMPUTE_WEIGHTED_CODEBOOK
+static void compute_weighted_codebook(const signed char *shape_cb, const spx_word16_t *r, spx_word16_t *resp, spx_word16_t *resp2, spx_word32_t *E, int shape_cb_size, int subvect_size, char *stack)
+{
+ int i, j, k;
+ VARDECL(spx_word16_t *shape);
+ ALLOC(shape, subvect_size, spx_word16_t);
+ for (i=0;i<shape_cb_size;i++)
+ {
+ spx_word16_t *res;
+
+ res = resp+i*subvect_size;
+ for (k=0;k<subvect_size;k++)
+ shape[k] = (spx_word16_t)shape_cb[i*subvect_size+k];
+ E[i]=0;
+
+ /* Compute codeword response using convolution with impulse response */
+ for(j=0;j<subvect_size;j++)
+ {
+ spx_word32_t resj=0;
+ spx_word16_t res16;
+ for (k=0;k<=j;k++)
+ resj = MAC16_16(resj,shape[k],r[j-k]);
+#ifdef FIXED_POINT
+ res16 = EXTRACT16(SHR32(resj, 13));
+#else
+ res16 = 0.03125f*resj;
+#endif
+ /* Compute codeword energy */
+ E[i]=MAC16_16(E[i],res16,res16);
+ res[j] = res16;
+ /*printf ("%d\n", (int)res[j]);*/
+ }
+ }
+
+}
+#endif
+
+#ifndef OVERRIDE_TARGET_UPDATE
+static inline void target_update(spx_word16_t *t, spx_word16_t g, spx_word16_t *r, int len)
+{
+ int n;
+ for (n=0;n<len;n++)
+ t[n] = SUB16(t[n],PSHR32(MULT16_16(g,r[n]),13));
+}
+#endif
+
+
+
+static void split_cb_search_shape_sign_N1(
+spx_word16_t target[], /* target vector */
+spx_coef_t ak[], /* LPCs for this subframe */
+spx_coef_t awk1[], /* Weighted LPCs for this subframe */
+spx_coef_t awk2[], /* Weighted LPCs for this subframe */
+const void *par, /* Codebook/search parameters*/
+int p, /* number of LPC coeffs */
+int nsf, /* number of samples in subframe */
+spx_sig_t *exc,
+spx_word16_t *r,
+SpeexBits *bits,
+char *stack,
+int update_target
+)
+{
+ int i,j,m,q;
+ VARDECL(spx_word16_t *resp);
+#ifdef _USE_SSE
+ VARDECL(__m128 *resp2);
+ VARDECL(__m128 *E);
+#else
+ spx_word16_t *resp2;
+ VARDECL(spx_word32_t *E);
+#endif
+ VARDECL(spx_word16_t *t);
+ VARDECL(spx_sig_t *e);
+ const signed char *shape_cb;
+ int shape_cb_size, subvect_size, nb_subvect;
+ const split_cb_params *params;
+ int best_index;
+ spx_word32_t best_dist;
+ int have_sign;
+
+ params = (const split_cb_params *) par;
+ subvect_size = params->subvect_size;
+ nb_subvect = params->nb_subvect;
+ shape_cb_size = 1<<params->shape_bits;
+ shape_cb = params->shape_cb;
+ have_sign = params->have_sign;
+ ALLOC(resp, shape_cb_size*subvect_size, spx_word16_t);
+#ifdef _USE_SSE
+ ALLOC(resp2, (shape_cb_size*subvect_size)>>2, __m128);
+ ALLOC(E, shape_cb_size>>2, __m128);
+#else
+ resp2 = resp;
+ ALLOC(E, shape_cb_size, spx_word32_t);
+#endif
+ ALLOC(t, nsf, spx_word16_t);
+ ALLOC(e, nsf, spx_sig_t);
+
+ /* FIXME: Do we still need to copy the target? */
+ SPEEX_COPY(t, target, nsf);
+
+ compute_weighted_codebook(shape_cb, r, resp, resp2, E, shape_cb_size, subvect_size, stack);
+
+ for (i=0;i<nb_subvect;i++)
+ {
+ spx_word16_t *x=t+subvect_size*i;
+ /*Find new n-best based on previous n-best j*/
+ if (have_sign)
+ vq_nbest_sign(x, resp2, subvect_size, shape_cb_size, E, 1, &best_index, &best_dist, stack);
+ else
+ vq_nbest(x, resp2, subvect_size, shape_cb_size, E, 1, &best_index, &best_dist, stack);
+
+ speex_bits_pack(bits,best_index,params->shape_bits+have_sign);
+
+ {
+ int rind;
+ spx_word16_t *res;
+ spx_word16_t sign=1;
+ rind = best_index;
+ if (rind>=shape_cb_size)
+ {
+ sign=-1;
+ rind-=shape_cb_size;
+ }
+ res = resp+rind*subvect_size;
+ if (sign>0)
+ for (m=0;m<subvect_size;m++)
+ t[subvect_size*i+m] = SUB16(t[subvect_size*i+m], res[m]);
+ else
+ for (m=0;m<subvect_size;m++)
+ t[subvect_size*i+m] = ADD16(t[subvect_size*i+m], res[m]);
+
+#ifdef FIXED_POINT
+ if (sign==1)
+ {
+ for (j=0;j<subvect_size;j++)
+ e[subvect_size*i+j]=SHL32(EXTEND32(shape_cb[rind*subvect_size+j]),SIG_SHIFT-5);
+ } else {
+ for (j=0;j<subvect_size;j++)
+ e[subvect_size*i+j]=NEG32(SHL32(EXTEND32(shape_cb[rind*subvect_size+j]),SIG_SHIFT-5));
+ }
+#else
+ for (j=0;j<subvect_size;j++)
+ e[subvect_size*i+j]=sign*0.03125*shape_cb[rind*subvect_size+j];
+#endif
+
+ }
+
+ for (m=0;m<subvect_size;m++)
+ {
+ spx_word16_t g;
+ int rind;
+ spx_word16_t sign=1;
+ rind = best_index;
+ if (rind>=shape_cb_size)
+ {
+ sign=-1;
+ rind-=shape_cb_size;
+ }
+
+ q=subvect_size-m;
+#ifdef FIXED_POINT
+ g=sign*shape_cb[rind*subvect_size+m];
+#else
+ g=sign*0.03125*shape_cb[rind*subvect_size+m];
+#endif
+ target_update(t+subvect_size*(i+1), g, r+q, nsf-subvect_size*(i+1));
+ }
+ }
+
+ /* Update excitation */
+ /* FIXME: We could update the excitation directly above */
+ for (j=0;j<nsf;j++)
+ exc[j]=ADD32(exc[j],e[j]);
+
+ /* Update target: only update target if necessary */
+ if (update_target)
+ {
+ VARDECL(spx_word16_t *r2);
+ ALLOC(r2, nsf, spx_word16_t);
+ for (j=0;j<nsf;j++)
+ r2[j] = EXTRACT16(PSHR32(e[j] ,6));
+ syn_percep_zero16(r2, ak, awk1, awk2, r2, nsf,p, stack);
+ for (j=0;j<nsf;j++)
+ target[j]=SUB16(target[j],PSHR16(r2[j],2));
+ }
+}
+
+
+
+void split_cb_search_shape_sign(
+spx_word16_t target[], /* target vector */
+spx_coef_t ak[], /* LPCs for this subframe */
+spx_coef_t awk1[], /* Weighted LPCs for this subframe */
+spx_coef_t awk2[], /* Weighted LPCs for this subframe */
+const void *par, /* Codebook/search parameters*/
+int p, /* number of LPC coeffs */
+int nsf, /* number of samples in subframe */
+spx_sig_t *exc,
+spx_word16_t *r,
+SpeexBits *bits,
+char *stack,
+int complexity,
+int update_target
+)
+{
+ int i,j,k,m,n,q;
+ VARDECL(spx_word16_t *resp);
+#ifdef _USE_SSE
+ VARDECL(__m128 *resp2);
+ VARDECL(__m128 *E);
+#else
+ spx_word16_t *resp2;
+ VARDECL(spx_word32_t *E);
+#endif
+ VARDECL(spx_word16_t *t);
+ VARDECL(spx_sig_t *e);
+ VARDECL(spx_word16_t *tmp);
+ VARDECL(spx_word32_t *ndist);
+ VARDECL(spx_word32_t *odist);
+ VARDECL(int *itmp);
+ VARDECL(spx_word16_t **ot2);
+ VARDECL(spx_word16_t **nt2);
+ spx_word16_t **ot, **nt;
+ VARDECL(int **nind);
+ VARDECL(int **oind);
+ VARDECL(int *ind);
+ const signed char *shape_cb;
+ int shape_cb_size, subvect_size, nb_subvect;
+ const split_cb_params *params;
+ int N=2;
+ VARDECL(int *best_index);
+ VARDECL(spx_word32_t *best_dist);
+ VARDECL(int *best_nind);
+ VARDECL(int *best_ntarget);
+ int have_sign;
+ N=complexity;
+ if (N>10)
+ N=10;
+ /* Complexity isn't as important for the codebooks as it is for the pitch */
+ N=(2*N)/3;
+ if (N<1)
+ N=1;
+ if (N==1)
+ {
+ split_cb_search_shape_sign_N1(target,ak,awk1,awk2,par,p,nsf,exc,r,bits,stack,update_target);
+ return;
+ }
+ ALLOC(ot2, N, spx_word16_t*);
+ ALLOC(nt2, N, spx_word16_t*);
+ ALLOC(oind, N, int*);
+ ALLOC(nind, N, int*);
+
+ params = (const split_cb_params *) par;
+ subvect_size = params->subvect_size;
+ nb_subvect = params->nb_subvect;
+ shape_cb_size = 1<<params->shape_bits;
+ shape_cb = params->shape_cb;
+ have_sign = params->have_sign;
+ ALLOC(resp, shape_cb_size*subvect_size, spx_word16_t);
+#ifdef _USE_SSE
+ ALLOC(resp2, (shape_cb_size*subvect_size)>>2, __m128);
+ ALLOC(E, shape_cb_size>>2, __m128);
+#else
+ resp2 = resp;
+ ALLOC(E, shape_cb_size, spx_word32_t);
+#endif
+ ALLOC(t, nsf, spx_word16_t);
+ ALLOC(e, nsf, spx_sig_t);
+ ALLOC(ind, nb_subvect, int);
+
+ ALLOC(tmp, 2*N*nsf, spx_word16_t);
+ for (i=0;i<N;i++)
+ {
+ ot2[i]=tmp+2*i*nsf;
+ nt2[i]=tmp+(2*i+1)*nsf;
+ }
+ ot=ot2;
+ nt=nt2;
+ ALLOC(best_index, N, int);
+ ALLOC(best_dist, N, spx_word32_t);
+ ALLOC(best_nind, N, int);
+ ALLOC(best_ntarget, N, int);
+ ALLOC(ndist, N, spx_word32_t);
+ ALLOC(odist, N, spx_word32_t);
+
+ ALLOC(itmp, 2*N*nb_subvect, int);
+ for (i=0;i<N;i++)
+ {
+ nind[i]=itmp+2*i*nb_subvect;
+ oind[i]=itmp+(2*i+1)*nb_subvect;
+ }
+
+ SPEEX_COPY(t, target, nsf);
+
+ for (j=0;j<N;j++)
+ SPEEX_COPY(&ot[j][0], t, nsf);
+
+ /* Pre-compute codewords response and energy */
+ compute_weighted_codebook(shape_cb, r, resp, resp2, E, shape_cb_size, subvect_size, stack);
+
+ for (j=0;j<N;j++)
+ odist[j]=0;
+
+ /*For all subvectors*/
+ for (i=0;i<nb_subvect;i++)
+ {
+ /*"erase" nbest list*/
+ for (j=0;j<N;j++)
+ ndist[j]=VERY_LARGE32;
+ /* This is not strictly necessary, but it provides an additonal safety
+ to prevent crashes in case something goes wrong in the previous
+ steps (e.g. NaNs) */
+ for (j=0;j<N;j++)
+ best_nind[j] = best_ntarget[j] = 0;
+ /*For all n-bests of previous subvector*/
+ for (j=0;j<N;j++)
+ {
+ spx_word16_t *x=ot[j]+subvect_size*i;
+ spx_word32_t tener = 0;
+ for (m=0;m<subvect_size;m++)
+ tener = MAC16_16(tener, x[m],x[m]);
+#ifdef FIXED_POINT
+ tener = SHR32(tener,1);
+#else
+ tener *= .5;
+#endif
+ /*Find new n-best based on previous n-best j*/
+ if (have_sign)
+ vq_nbest_sign(x, resp2, subvect_size, shape_cb_size, E, N, best_index, best_dist, stack);
+ else
+ vq_nbest(x, resp2, subvect_size, shape_cb_size, E, N, best_index, best_dist, stack);
+
+ /*For all new n-bests*/
+ for (k=0;k<N;k++)
+ {
+ /* Compute total distance (including previous sub-vectors */
+ spx_word32_t err = ADD32(ADD32(odist[j],best_dist[k]),tener);
+
+ /*update n-best list*/
+ if (err<ndist[N-1])
+ {
+ for (m=0;m<N;m++)
+ {
+ if (err < ndist[m])
+ {
+ for (n=N-1;n>m;n--)
+ {
+ ndist[n] = ndist[n-1];
+ best_nind[n] = best_nind[n-1];
+ best_ntarget[n] = best_ntarget[n-1];
+ }
+ /* n is equal to m here, so they're interchangeable */
+ ndist[m] = err;
+ best_nind[n] = best_index[k];
+ best_ntarget[n] = j;
+ break;
+ }
+ }
+ }
+ }
+ if (i==0)
+ break;
+ }
+ for (j=0;j<N;j++)
+ {
+ /*previous target (we don't care what happened before*/
+ for (m=(i+1)*subvect_size;m<nsf;m++)
+ nt[j][m]=ot[best_ntarget[j]][m];
+
+ /* New code: update the rest of the target only if it's worth it */
+ for (m=0;m<subvect_size;m++)
+ {
+ spx_word16_t g;
+ int rind;
+ spx_word16_t sign=1;
+ rind = best_nind[j];
+ if (rind>=shape_cb_size)
+ {
+ sign=-1;
+ rind-=shape_cb_size;
+ }
+
+ q=subvect_size-m;
+#ifdef FIXED_POINT
+ g=sign*shape_cb[rind*subvect_size+m];
+#else
+ g=sign*0.03125*shape_cb[rind*subvect_size+m];
+#endif
+ target_update(nt[j]+subvect_size*(i+1), g, r+q, nsf-subvect_size*(i+1));
+ }
+
+ for (q=0;q<nb_subvect;q++)
+ nind[j][q]=oind[best_ntarget[j]][q];
+ nind[j][i]=best_nind[j];
+ }
+
+ /*update old-new data*/
+ /* just swap pointers instead of a long copy */
+ {
+ spx_word16_t **tmp2;
+ tmp2=ot;
+ ot=nt;
+ nt=tmp2;
+ }
+ for (j=0;j<N;j++)
+ for (m=0;m<nb_subvect;m++)
+ oind[j][m]=nind[j][m];
+ for (j=0;j<N;j++)
+ odist[j]=ndist[j];
+ }
+
+ /*save indices*/
+ for (i=0;i<nb_subvect;i++)
+ {
+ ind[i]=nind[0][i];
+ speex_bits_pack(bits,ind[i],params->shape_bits+have_sign);
+ }
+
+ /* Put everything back together */
+ for (i=0;i<nb_subvect;i++)
+ {
+ int rind;
+ spx_word16_t sign=1;
+ rind = ind[i];
+ if (rind>=shape_cb_size)
+ {
+ sign=-1;
+ rind-=shape_cb_size;
+ }
+#ifdef FIXED_POINT
+ if (sign==1)
+ {
+ for (j=0;j<subvect_size;j++)
+ e[subvect_size*i+j]=SHL32(EXTEND32(shape_cb[rind*subvect_size+j]),SIG_SHIFT-5);
+ } else {
+ for (j=0;j<subvect_size;j++)
+ e[subvect_size*i+j]=NEG32(SHL32(EXTEND32(shape_cb[rind*subvect_size+j]),SIG_SHIFT-5));
+ }
+#else
+ for (j=0;j<subvect_size;j++)
+ e[subvect_size*i+j]=sign*0.03125*shape_cb[rind*subvect_size+j];
+#endif
+ }
+ /* Update excitation */
+ for (j=0;j<nsf;j++)
+ exc[j]=ADD32(exc[j],e[j]);
+
+ /* Update target: only update target if necessary */
+ if (update_target)
+ {
+ VARDECL(spx_word16_t *r2);
+ ALLOC(r2, nsf, spx_word16_t);
+ for (j=0;j<nsf;j++)
+ r2[j] = EXTRACT16(PSHR32(e[j] ,6));
+ syn_percep_zero16(r2, ak, awk1, awk2, r2, nsf,p, stack);
+ for (j=0;j<nsf;j++)
+ target[j]=SUB16(target[j],PSHR16(r2[j],2));
+ }
+}
+
+
+void split_cb_shape_sign_unquant(
+spx_sig_t *exc,
+const void *par, /* non-overlapping codebook */
+int nsf, /* number of samples in subframe */
+SpeexBits *bits,
+char *stack,
+spx_int32_t *seed
+)
+{
+ int i,j;
+ VARDECL(int *ind);
+ VARDECL(int *signs);
+ const signed char *shape_cb;
+ int shape_cb_size, subvect_size, nb_subvect;
+ const split_cb_params *params;
+ int have_sign;
+
+ params = (const split_cb_params *) par;
+ subvect_size = params->subvect_size;
+ nb_subvect = params->nb_subvect;
+ shape_cb_size = 1<<params->shape_bits;
+ shape_cb = params->shape_cb;
+ have_sign = params->have_sign;
+
+ ALLOC(ind, nb_subvect, int);
+ ALLOC(signs, nb_subvect, int);
+
+ /* Decode codewords and gains */
+ for (i=0;i<nb_subvect;i++)
+ {
+ if (have_sign)
+ signs[i] = speex_bits_unpack_unsigned(bits, 1);
+ else
+ signs[i] = 0;
+ ind[i] = speex_bits_unpack_unsigned(bits, params->shape_bits);
+ }
+ /* Compute decoded excitation */
+ for (i=0;i<nb_subvect;i++)
+ {
+ spx_word16_t s=1;
+ if (signs[i])
+ s=-1;
+#ifdef FIXED_POINT
+ if (s==1)
+ {
+ for (j=0;j<subvect_size;j++)
+ exc[subvect_size*i+j]=SHL32(EXTEND32(shape_cb[ind[i]*subvect_size+j]),SIG_SHIFT-5);
+ } else {
+ for (j=0;j<subvect_size;j++)
+ exc[subvect_size*i+j]=NEG32(SHL32(EXTEND32(shape_cb[ind[i]*subvect_size+j]),SIG_SHIFT-5));
+ }
+#else
+ for (j=0;j<subvect_size;j++)
+ exc[subvect_size*i+j]+=s*0.03125*shape_cb[ind[i]*subvect_size+j];
+#endif
+ }
+}
+
+void noise_codebook_quant(
+spx_word16_t target[], /* target vector */
+spx_coef_t ak[], /* LPCs for this subframe */
+spx_coef_t awk1[], /* Weighted LPCs for this subframe */
+spx_coef_t awk2[], /* Weighted LPCs for this subframe */
+const void *par, /* Codebook/search parameters*/
+int p, /* number of LPC coeffs */
+int nsf, /* number of samples in subframe */
+spx_sig_t *exc,
+spx_word16_t *r,
+SpeexBits *bits,
+char *stack,
+int complexity,
+int update_target
+)
+{
+ int i;
+ VARDECL(spx_word16_t *tmp);
+ ALLOC(tmp, nsf, spx_word16_t);
+ residue_percep_zero16(target, ak, awk1, awk2, tmp, nsf, p, stack);
+
+ for (i=0;i<nsf;i++)
+ exc[i]+=SHL32(EXTEND32(tmp[i]),8);
+ SPEEX_MEMSET(target, 0, nsf);
+}
+
+
+void noise_codebook_unquant(
+spx_sig_t *exc,
+const void *par, /* non-overlapping codebook */
+int nsf, /* number of samples in subframe */
+SpeexBits *bits,
+char *stack,
+spx_int32_t *seed
+)
+{
+ int i;
+ /* FIXME: This is bad, but I don't think the function ever gets called anyway */
+ for (i=0;i<nsf;i++)
+ exc[i]=SHL32(EXTEND32(speex_rand(1, seed)),SIG_SHIFT);
+}
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