138 lines
4.9 KiB
C
138 lines
4.9 KiB
C
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/* Copyright (C) 2004 Jean-Marc Valin */
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/**
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@file cb_search_arm4.h
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@brief Fixed codebook functions (ARM4 version)
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*/
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/*
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions
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are met:
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- Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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- Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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- Neither the name of the Xiph.org Foundation nor the names of its
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contributors may be used to endorse or promote products derived from
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this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR
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CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/* This optimization is temporaly disabled until it is fixed to account for the fact
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that "r" is now a 16-bit array */
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#if 0
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#define OVERRIDE_COMPUTE_WEIGHTED_CODEBOOK
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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)
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{
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int i, j, k;
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//const signed char *shape;
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for (i=0;i<shape_cb_size;i+=4)
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{
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//shape = shape_cb;
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E[0]=0;
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E[1]=0;
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E[2]=0;
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E[3]=0;
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/* Compute codeword response using convolution with impulse response */
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for(j=0;j<subvect_size;j++)
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{
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#if 1
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spx_word16_t *res;
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res = resp+j;
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spx_word32_t resj0,resj1,resj2,resj3;
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spx_word32_t dead1, dead2, dead3, dead4, dead5, dead6, dead7, dead8;
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__asm__ __volatile__ (
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"mov %0, #0 \n\t"
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"mov %1, #0 \n\t"
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"mov %2, #0 \n\t"
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"mov %3, #0 \n\t"
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".weighted%=: \n\t"
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"ldrsb %8, [%6] \n\t"
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"ldr %10, [%5], #-4 \n\t"
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"mov %9, %6 \n\t"
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"ldrsb %11, [%9, %7]! \n\t"
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"mla %0, %10, %8, %0 \n\t"
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"ldrsb %8, [%9, %7]! \n\t"
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"mla %1, %10, %11, %1 \n\t"
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"ldrsb %11, [%9, %7]! \n\t"
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"mla %2, %10, %8, %2 \n\t"
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"subs %4, %4, #1 \n\t"
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"mla %3, %10, %11, %3 \n\t"
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"add %6, %6, #1 \n\t"
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"bne .weighted%= \n\t"
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: "=r" (resj0), "=r" (resj1), "=r" (resj2), "=r" (resj3),
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"=r" (dead1), "=r" (dead2), "=r" (dead3), "=r" (dead4),
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"=r" (dead5), "=r" (dead6), "=r" (dead7), "=r" (dead8)
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: "4" (j+1), "5" (r+j), "6" (shape_cb), "7" (subvect_size)
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: "cc", "memory");
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#else
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spx_word16_t *res;
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res = resp+j;
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spx_word32_t resj0=0;
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spx_word32_t resj1=0;
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spx_word32_t resj2=0;
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spx_word32_t resj3=0;
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for (k=0;k<=j;k++)
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{
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const signed char *shape=shape_cb+k;
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resj0 = MAC16_16(resj0,*shape,r[j-k]);
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shape += subvect_size;
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resj1 = MAC16_16(resj1,*shape,r[j-k]);
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shape += subvect_size;
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resj2 = MAC16_16(resj2,*shape,r[j-k]);
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shape += subvect_size;
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resj3 = MAC16_16(resj3,*shape,r[j-k]);
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shape += subvect_size;
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}
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#endif
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#ifdef FIXED_POINT
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resj0 = SHR(resj0, 11);
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resj1 = SHR(resj1, 11);
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resj2 = SHR(resj2, 11);
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resj3 = SHR(resj3, 11);
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#else
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resj0 *= 0.03125;
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resj1 *= 0.03125;
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resj2 *= 0.03125;
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resj3 *= 0.03125;
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#endif
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/* Compute codeword energy */
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E[0]=ADD32(E[0],MULT16_16(resj0,resj0));
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E[1]=ADD32(E[1],MULT16_16(resj1,resj1));
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E[2]=ADD32(E[2],MULT16_16(resj2,resj2));
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E[3]=ADD32(E[3],MULT16_16(resj3,resj3));
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*res = resj0;
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res += subvect_size;
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*res = resj1;
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res += subvect_size;
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*res = resj2;
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res += subvect_size;
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*res = resj3;
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res += subvect_size;
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}
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resp += subvect_size<<2;
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shape_cb += subvect_size<<2;
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E+=4;
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}
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}
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#endif
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