1 /* Copyright (C) 2004 Jean-Marc Valin */ 2 /** 3 @file cb_search_arm4.h 4 @brief Fixed codebook functions (ARM4 version) 5 */ 6 /* 7 Redistribution and use in source and binary forms, with or without 8 modification, are permitted provided that the following conditions 9 are met: 10 11 - Redistributions of source code must retain the above copyright 12 notice, this list of conditions and the following disclaimer. 13 14 - Redistributions in binary form must reproduce the above copyright 15 notice, this list of conditions and the following disclaimer in the 16 documentation and/or other materials provided with the distribution. 17 18 - Neither the name of the Xiph.org Foundation nor the names of its 19 contributors may be used to endorse or promote products derived from 20 this software without specific prior written permission. 21 22 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 23 ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 24 LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 25 A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR 26 CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 27 EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 28 PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 29 PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 30 LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 31 NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 32 SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 33 */ 34 35 /* This optimization is temporaly disabled until it is fixed to account for the fact 36 that "r" is now a 16-bit array */ 37 #if 0 38 #define OVERRIDE_COMPUTE_WEIGHTED_CODEBOOK 39 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) 40 { 41 int i, j, k; 42 //const signed char *shape; 43 for (i=0;i<shape_cb_size;i+=4) 44 { 45 46 //shape = shape_cb; 47 E[0]=0; 48 E[1]=0; 49 E[2]=0; 50 E[3]=0; 51 52 /* Compute codeword response using convolution with impulse response */ 53 for(j=0;j<subvect_size;j++) 54 { 55 #if 1 56 spx_word16_t *res; 57 res = resp+j; 58 spx_word32_t resj0,resj1,resj2,resj3; 59 spx_word32_t dead1, dead2, dead3, dead4, dead5, dead6, dead7, dead8; 60 __asm__ __volatile__ ( 61 "mov %0, #0 \n\t" 62 "mov %1, #0 \n\t" 63 "mov %2, #0 \n\t" 64 "mov %3, #0 \n\t" 65 ".weighted%=: \n\t" 66 "ldrsb %8, [%6] \n\t" 67 "ldr %10, [%5], #-4 \n\t" 68 "mov %9, %6 \n\t" 69 "ldrsb %11, [%9, %7]! \n\t" 70 "mla %0, %10, %8, %0 \n\t" 71 "ldrsb %8, [%9, %7]! \n\t" 72 "mla %1, %10, %11, %1 \n\t" 73 "ldrsb %11, [%9, %7]! \n\t" 74 "mla %2, %10, %8, %2 \n\t" 75 "subs %4, %4, #1 \n\t" 76 "mla %3, %10, %11, %3 \n\t" 77 "add %6, %6, #1 \n\t" 78 "bne .weighted%= \n\t" 79 : "=r" (resj0), "=r" (resj1), "=r" (resj2), "=r" (resj3), 80 "=r" (dead1), "=r" (dead2), "=r" (dead3), "=r" (dead4), 81 "=r" (dead5), "=r" (dead6), "=r" (dead7), "=r" (dead8) 82 : "4" (j+1), "5" (r+j), "6" (shape_cb), "7" (subvect_size) 83 : "cc", "memory"); 84 #else 85 spx_word16_t *res; 86 res = resp+j; 87 spx_word32_t resj0=0; 88 spx_word32_t resj1=0; 89 spx_word32_t resj2=0; 90 spx_word32_t resj3=0; 91 for (k=0;k<=j;k++) 92 { 93 const signed char *shape=shape_cb+k; 94 resj0 = MAC16_16(resj0,*shape,r[j-k]); 95 shape += subvect_size; 96 resj1 = MAC16_16(resj1,*shape,r[j-k]); 97 shape += subvect_size; 98 resj2 = MAC16_16(resj2,*shape,r[j-k]); 99 shape += subvect_size; 100 resj3 = MAC16_16(resj3,*shape,r[j-k]); 101 shape += subvect_size; 102 } 103 #endif 104 105 #ifdef FIXED_POINT 106 resj0 = SHR(resj0, 11); 107 resj1 = SHR(resj1, 11); 108 resj2 = SHR(resj2, 11); 109 resj3 = SHR(resj3, 11); 110 #else 111 resj0 *= 0.03125; 112 resj1 *= 0.03125; 113 resj2 *= 0.03125; 114 resj3 *= 0.03125; 115 #endif 116 117 /* Compute codeword energy */ 118 E[0]=ADD32(E[0],MULT16_16(resj0,resj0)); 119 E[1]=ADD32(E[1],MULT16_16(resj1,resj1)); 120 E[2]=ADD32(E[2],MULT16_16(resj2,resj2)); 121 E[3]=ADD32(E[3],MULT16_16(resj3,resj3)); 122 *res = resj0; 123 res += subvect_size; 124 *res = resj1; 125 res += subvect_size; 126 *res = resj2; 127 res += subvect_size; 128 *res = resj3; 129 res += subvect_size; 130 } 131 resp += subvect_size<<2; 132 shape_cb += subvect_size<<2; 133 E+=4; 134 } 135 136 } 137 #endif 138
