summaryrefslogtreecommitdiff
path: root/drivers/speex/quant_lsp.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/speex/quant_lsp.c')
-rw-r--r--drivers/speex/quant_lsp.c385
1 files changed, 0 insertions, 385 deletions
diff --git a/drivers/speex/quant_lsp.c b/drivers/speex/quant_lsp.c
deleted file mode 100644
index a09e370ef8..0000000000
--- a/drivers/speex/quant_lsp.c
+++ /dev/null
@@ -1,385 +0,0 @@
-/* Copyright (C) 2002 Jean-Marc Valin
- File: quant_lsp.c
- LSP vector quantization
-
- 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.
-*/
-
-
-#include "config.h"
-
-
-#include "quant_lsp.h"
-#include "os_support.h"
-#include <math.h>
-#ifndef M_PI
-#define M_PI 3.14159265358979323846
-#endif
-
-#include "arch.h"
-
-#ifdef BFIN_ASM
-#include "quant_lsp_bfin.h"
-#endif
-
-#ifdef FIXED_POINT
-
-#define LSP_LINEAR(i) (SHL16(i+1,11))
-#define LSP_LINEAR_HIGH(i) (ADD16(MULT16_16_16(i,2560),6144))
-#define LSP_DIV_256(x) (SHL16((spx_word16_t)x, 5))
-#define LSP_DIV_512(x) (SHL16((spx_word16_t)x, 4))
-#define LSP_DIV_1024(x) (SHL16((spx_word16_t)x, 3))
-#define LSP_PI 25736
-
-#else
-
-#define LSP_LINEAR(i) (.25*(i)+.25)
-#define LSP_LINEAR_HIGH(i) (.3125*(i)+.75)
-#define LSP_SCALE 256.
-#define LSP_DIV_256(x) (0.0039062*(x))
-#define LSP_DIV_512(x) (0.0019531*(x))
-#define LSP_DIV_1024(x) (0.00097656*(x))
-#define LSP_PI M_PI
-
-#endif
-
-static void compute_quant_weights(spx_lsp_t *qlsp, spx_word16_t *quant_weight, int order)
-{
- int i;
- spx_word16_t tmp1, tmp2;
- for (i=0;i<order;i++)
- {
- if (i==0)
- tmp1 = qlsp[i];
- else
- tmp1 = qlsp[i]-qlsp[i-1];
- if (i==order-1)
- tmp2 = LSP_PI-qlsp[i];
- else
- tmp2 = qlsp[i+1]-qlsp[i];
- if (tmp2<tmp1)
- tmp1 = tmp2;
-#ifdef FIXED_POINT
- quant_weight[i] = DIV32_16(81920,ADD16(300,tmp1));
-#else
- quant_weight[i] = 10/(.04+tmp1);
-#endif
- }
-
-}
-
-/* Note: x is modified*/
-#ifndef OVERRIDE_LSP_QUANT
-static int lsp_quant(spx_word16_t *x, const signed char *cdbk, int nbVec, int nbDim)
-{
- int i,j;
- spx_word32_t dist;
- spx_word16_t tmp;
- spx_word32_t best_dist=VERY_LARGE32;
- int best_id=0;
- const signed char *ptr=cdbk;
- for (i=0;i<nbVec;i++)
- {
- dist=0;
- for (j=0;j<nbDim;j++)
- {
- tmp=SUB16(x[j],SHL16((spx_word16_t)*ptr++,5));
- dist=MAC16_16(dist,tmp,tmp);
- }
- if (dist<best_dist)
- {
- best_dist=dist;
- best_id=i;
- }
- }
-
- for (j=0;j<nbDim;j++)
- x[j] = SUB16(x[j],SHL16((spx_word16_t)cdbk[best_id*nbDim+j],5));
-
- return best_id;
-}
-#endif
-
-/* Note: x is modified*/
-#ifndef OVERRIDE_LSP_WEIGHT_QUANT
-static int lsp_weight_quant(spx_word16_t *x, spx_word16_t *weight, const signed char *cdbk, int nbVec, int nbDim)
-{
- int i,j;
- spx_word32_t dist;
- spx_word16_t tmp;
- spx_word32_t best_dist=VERY_LARGE32;
- int best_id=0;
- const signed char *ptr=cdbk;
- for (i=0;i<nbVec;i++)
- {
- dist=0;
- for (j=0;j<nbDim;j++)
- {
- tmp=SUB16(x[j],SHL16((spx_word16_t)*ptr++,5));
- dist=MAC16_32_Q15(dist,weight[j],MULT16_16(tmp,tmp));
- }
- if (dist<best_dist)
- {
- best_dist=dist;
- best_id=i;
- }
- }
-
- for (j=0;j<nbDim;j++)
- x[j] = SUB16(x[j],SHL16((spx_word16_t)cdbk[best_id*nbDim+j],5));
- return best_id;
-}
-#endif
-
-void lsp_quant_nb(spx_lsp_t *lsp, spx_lsp_t *qlsp, int order, SpeexBits *bits)
-{
- int i;
- int id;
- spx_word16_t quant_weight[10];
-
- for (i=0;i<order;i++)
- qlsp[i]=lsp[i];
-
- compute_quant_weights(qlsp, quant_weight, order);
-
- for (i=0;i<order;i++)
- qlsp[i]=SUB16(qlsp[i],LSP_LINEAR(i));
-
-#ifndef FIXED_POINT
- for (i=0;i<order;i++)
- qlsp[i] = LSP_SCALE*qlsp[i];
-#endif
- id = lsp_quant(qlsp, cdbk_nb, NB_CDBK_SIZE, order);
- speex_bits_pack(bits, id, 6);
-
- for (i=0;i<order;i++)
- qlsp[i]*=2;
-
- id = lsp_weight_quant(qlsp, quant_weight, cdbk_nb_low1, NB_CDBK_SIZE_LOW1, 5);
- speex_bits_pack(bits, id, 6);
-
- for (i=0;i<5;i++)
- qlsp[i]*=2;
-
- id = lsp_weight_quant(qlsp, quant_weight, cdbk_nb_low2, NB_CDBK_SIZE_LOW2, 5);
- speex_bits_pack(bits, id, 6);
-
- id = lsp_weight_quant(qlsp+5, quant_weight+5, cdbk_nb_high1, NB_CDBK_SIZE_HIGH1, 5);
- speex_bits_pack(bits, id, 6);
-
- for (i=5;i<10;i++)
- qlsp[i]*=2;
-
- id = lsp_weight_quant(qlsp+5, quant_weight+5, cdbk_nb_high2, NB_CDBK_SIZE_HIGH2, 5);
- speex_bits_pack(bits, id, 6);
-
-#ifdef FIXED_POINT
- for (i=0;i<order;i++)
- qlsp[i]=PSHR16(qlsp[i],2);
-#else
- for (i=0;i<order;i++)
- qlsp[i]=qlsp[i] * .00097656;
-#endif
-
- for (i=0;i<order;i++)
- qlsp[i]=lsp[i]-qlsp[i];
-}
-
-void lsp_unquant_nb(spx_lsp_t *lsp, int order, SpeexBits *bits)
-{
- int i, id;
- for (i=0;i<order;i++)
- lsp[i]=LSP_LINEAR(i);
-
-
- id=speex_bits_unpack_unsigned(bits, 6);
- for (i=0;i<10;i++)
- lsp[i] = ADD32(lsp[i], LSP_DIV_256(cdbk_nb[id*10+i]));
-
- id=speex_bits_unpack_unsigned(bits, 6);
- for (i=0;i<5;i++)
- lsp[i] = ADD16(lsp[i], LSP_DIV_512(cdbk_nb_low1[id*5+i]));
-
- id=speex_bits_unpack_unsigned(bits, 6);
- for (i=0;i<5;i++)
- lsp[i] = ADD32(lsp[i], LSP_DIV_1024(cdbk_nb_low2[id*5+i]));
-
- id=speex_bits_unpack_unsigned(bits, 6);
- for (i=0;i<5;i++)
- lsp[i+5] = ADD32(lsp[i+5], LSP_DIV_512(cdbk_nb_high1[id*5+i]));
-
- id=speex_bits_unpack_unsigned(bits, 6);
- for (i=0;i<5;i++)
- lsp[i+5] = ADD32(lsp[i+5], LSP_DIV_1024(cdbk_nb_high2[id*5+i]));
-}
-
-
-void lsp_quant_lbr(spx_lsp_t *lsp, spx_lsp_t *qlsp, int order, SpeexBits *bits)
-{
- int i;
- int id;
- spx_word16_t quant_weight[10];
-
- for (i=0;i<order;i++)
- qlsp[i]=lsp[i];
-
- compute_quant_weights(qlsp, quant_weight, order);
-
- for (i=0;i<order;i++)
- qlsp[i]=SUB16(qlsp[i],LSP_LINEAR(i));
-#ifndef FIXED_POINT
- for (i=0;i<order;i++)
- qlsp[i]=qlsp[i]*LSP_SCALE;
-#endif
- id = lsp_quant(qlsp, cdbk_nb, NB_CDBK_SIZE, order);
- speex_bits_pack(bits, id, 6);
-
- for (i=0;i<order;i++)
- qlsp[i]*=2;
-
- id = lsp_weight_quant(qlsp, quant_weight, cdbk_nb_low1, NB_CDBK_SIZE_LOW1, 5);
- speex_bits_pack(bits, id, 6);
-
- id = lsp_weight_quant(qlsp+5, quant_weight+5, cdbk_nb_high1, NB_CDBK_SIZE_HIGH1, 5);
- speex_bits_pack(bits, id, 6);
-
-#ifdef FIXED_POINT
- for (i=0;i<order;i++)
- qlsp[i] = PSHR16(qlsp[i],1);
-#else
- for (i=0;i<order;i++)
- qlsp[i] = qlsp[i]*0.0019531;
-#endif
-
- for (i=0;i<order;i++)
- qlsp[i]=lsp[i]-qlsp[i];
-}
-
-void lsp_unquant_lbr(spx_lsp_t *lsp, int order, SpeexBits *bits)
-{
- int i, id;
- for (i=0;i<order;i++)
- lsp[i]=LSP_LINEAR(i);
-
-
- id=speex_bits_unpack_unsigned(bits, 6);
- for (i=0;i<10;i++)
- lsp[i] += LSP_DIV_256(cdbk_nb[id*10+i]);
-
- id=speex_bits_unpack_unsigned(bits, 6);
- for (i=0;i<5;i++)
- lsp[i] += LSP_DIV_512(cdbk_nb_low1[id*5+i]);
-
- id=speex_bits_unpack_unsigned(bits, 6);
- for (i=0;i<5;i++)
- lsp[i+5] += LSP_DIV_512(cdbk_nb_high1[id*5+i]);
-
-}
-
-
-#ifdef DISABLE_WIDEBAND
-void lsp_quant_high(spx_lsp_t *lsp, spx_lsp_t *qlsp, int order, SpeexBits *bits)
-{
- speex_fatal("Wideband and Ultra-wideband are disabled");
-}
-void lsp_unquant_high(spx_lsp_t *lsp, int order, SpeexBits *bits)
-{
- speex_fatal("Wideband and Ultra-wideband are disabled");
-}
-#else
-extern const signed char high_lsp_cdbk[];
-extern const signed char high_lsp_cdbk2[];
-
-
-void lsp_quant_high(spx_lsp_t *lsp, spx_lsp_t *qlsp, int order, SpeexBits *bits)
-{
- int i;
- int id;
- spx_word16_t quant_weight[10];
-
- for (i=0;i<order;i++)
- qlsp[i]=lsp[i];
-
- compute_quant_weights(qlsp, quant_weight, order);
-
- /* quant_weight[0] = 10/(qlsp[1]-qlsp[0]);
- quant_weight[order-1] = 10/(qlsp[order-1]-qlsp[order-2]);
- for (i=1;i<order-1;i++)
- {
- tmp1 = 10/(qlsp[i]-qlsp[i-1]);
- tmp2 = 10/(qlsp[i+1]-qlsp[i]);
- quant_weight[i] = tmp1 > tmp2 ? tmp1 : tmp2;
- }*/
-
- for (i=0;i<order;i++)
- qlsp[i]=SUB16(qlsp[i],LSP_LINEAR_HIGH(i));
-#ifndef FIXED_POINT
- for (i=0;i<order;i++)
- qlsp[i] = qlsp[i]*LSP_SCALE;
-#endif
- id = lsp_quant(qlsp, high_lsp_cdbk, 64, order);
- speex_bits_pack(bits, id, 6);
-
- for (i=0;i<order;i++)
- qlsp[i]*=2;
-
- id = lsp_weight_quant(qlsp, quant_weight, high_lsp_cdbk2, 64, order);
- speex_bits_pack(bits, id, 6);
-
-#ifdef FIXED_POINT
- for (i=0;i<order;i++)
- qlsp[i] = PSHR16(qlsp[i],1);
-#else
- for (i=0;i<order;i++)
- qlsp[i] = qlsp[i]*0.0019531;
-#endif
-
- for (i=0;i<order;i++)
- qlsp[i]=lsp[i]-qlsp[i];
-}
-
-void lsp_unquant_high(spx_lsp_t *lsp, int order, SpeexBits *bits)
-{
-
- int i, id;
- for (i=0;i<order;i++)
- lsp[i]=LSP_LINEAR_HIGH(i);
-
-
- id=speex_bits_unpack_unsigned(bits, 6);
- for (i=0;i<order;i++)
- lsp[i] += LSP_DIV_256(high_lsp_cdbk[id*order+i]);
-
-
- id=speex_bits_unpack_unsigned(bits, 6);
- for (i=0;i<order;i++)
- lsp[i] += LSP_DIV_512(high_lsp_cdbk2[id*order+i]);
-}
-
-#endif
-
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-01 21:31:25 +0000