1/* 2 * Copyright (c) 2012 3 * MIPS Technologies, Inc., California. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of the MIPS Technologies, Inc., nor the names of its 14 * contributors may be used to endorse or promote products derived from 15 * this software without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE MIPS TECHNOLOGIES, INC. ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE MIPS TECHNOLOGIES, INC. BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 * Author: Nedeljko Babic (nbabic@mips.com) 30 * 31 * This file is part of FFmpeg. 32 * 33 * FFmpeg is free software; you can redistribute it and/or 34 * modify it under the terms of the GNU Lesser General Public 35 * License as published by the Free Software Foundation; either 36 * version 2.1 of the License, or (at your option) any later version. 37 * 38 * FFmpeg is distributed in the hope that it will be useful, 39 * but WITHOUT ANY WARRANTY; without even the implied warranty of 40 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 41 * Lesser General Public License for more details. 42 * 43 * You should have received a copy of the GNU Lesser General Public 44 * License along with FFmpeg; if not, write to the Free Software 45 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 46 */ 47 48/** 49 * @file 50 * Reference: libavcodec/amrwbdec.c 51 */ 52#include "libavutil/avutil.h" 53#include "libavcodec/amrwbdata.h" 54#include "amrwbdec_mips.h" 55 56#if HAVE_INLINE_ASM 57void hb_fir_filter_mips(float *out, const float fir_coef[HB_FIR_SIZE + 1], 58 float mem[HB_FIR_SIZE], const float *in) 59{ 60 int i; 61 float data[AMRWB_SFR_SIZE_16k + HB_FIR_SIZE]; // past and current samples 62 63 memcpy(data, mem, HB_FIR_SIZE * sizeof(float)); 64 memcpy(data + HB_FIR_SIZE, in, AMRWB_SFR_SIZE_16k * sizeof(float)); 65 66 for (i = 0; i < AMRWB_SFR_SIZE_16k; i++) { 67 float output; 68 float * p_data = (data+i); 69 70 /** 71 * inner loop is entirely unrolled and instructions are scheduled 72 * to minimize pipeline stall 73 */ 74 __asm__ volatile( 75 "mtc1 $zero, %[output] \n\t" 76 "lwc1 $f0, 0(%[p_data]) \n\t" 77 "lwc1 $f1, 0(%[fir_coef]) \n\t" 78 "lwc1 $f2, 4(%[p_data]) \n\t" 79 "madd.s %[output], %[output], $f0, $f1 \n\t" 80 "lwc1 $f3, 4(%[fir_coef]) \n\t" 81 "lwc1 $f4, 8(%[p_data]) \n\t" 82 "madd.s %[output], %[output], $f2, $f3 \n\t" 83 "lwc1 $f5, 8(%[fir_coef]) \n\t" 84 85 "lwc1 $f0, 12(%[p_data]) \n\t" 86 "lwc1 $f1, 12(%[fir_coef]) \n\t" 87 "madd.s %[output], %[output], $f4, $f5 \n\t" 88 "lwc1 $f2, 16(%[p_data]) \n\t" 89 "madd.s %[output], %[output], $f0, $f1 \n\t" 90 "lwc1 $f3, 16(%[fir_coef]) \n\t" 91 "lwc1 $f4, 20(%[p_data]) \n\t" 92 "lwc1 $f5, 20(%[fir_coef]) \n\t" 93 "madd.s %[output], %[output], $f2, $f3 \n\t" 94 95 "lwc1 $f0, 24(%[p_data]) \n\t" 96 "lwc1 $f1, 24(%[fir_coef]) \n\t" 97 "lwc1 $f2, 28(%[p_data]) \n\t" 98 "madd.s %[output], %[output], $f4, $f5 \n\t" 99 "lwc1 $f3, 28(%[fir_coef]) \n\t" 100 "madd.s %[output], %[output], $f0, $f1 \n\t" 101 "lwc1 $f4, 32(%[p_data]) \n\t" 102 "madd.s %[output], %[output], $f2, $f3 \n\t" 103 "lwc1 $f5, 32(%[fir_coef]) \n\t" 104 "madd.s %[output], %[output], $f4, $f5 \n\t" 105 106 "lwc1 $f0, 36(%[p_data]) \n\t" 107 "lwc1 $f1, 36(%[fir_coef]) \n\t" 108 "lwc1 $f2, 40(%[p_data]) \n\t" 109 "lwc1 $f3, 40(%[fir_coef]) \n\t" 110 "madd.s %[output], %[output], $f0, $f1 \n\t" 111 "lwc1 $f4, 44(%[p_data]) \n\t" 112 "lwc1 $f5, 44(%[fir_coef]) \n\t" 113 "madd.s %[output], %[output], $f2, $f3 \n\t" 114 115 "lwc1 $f0, 48(%[p_data]) \n\t" 116 "lwc1 $f1, 48(%[fir_coef]) \n\t" 117 "lwc1 $f2, 52(%[p_data]) \n\t" 118 "madd.s %[output], %[output], $f4, $f5 \n\t" 119 "lwc1 $f3, 52(%[fir_coef]) \n\t" 120 "lwc1 $f4, 56(%[p_data]) \n\t" 121 "madd.s %[output], %[output], $f0, $f1 \n\t" 122 "lwc1 $f5, 56(%[fir_coef]) \n\t" 123 "madd.s %[output], %[output], $f2, $f3 \n\t" 124 125 "lwc1 $f0, 60(%[p_data]) \n\t" 126 "lwc1 $f1, 60(%[fir_coef]) \n\t" 127 "lwc1 $f2, 64(%[p_data]) \n\t" 128 "madd.s %[output], %[output], $f4, $f5 \n\t" 129 "lwc1 $f3, 64(%[fir_coef]) \n\t" 130 "madd.s %[output], %[output], $f0, $f1 \n\t" 131 "lwc1 $f4, 68(%[p_data]) \n\t" 132 "madd.s %[output], %[output], $f2, $f3 \n\t" 133 "lwc1 $f5, 68(%[fir_coef]) \n\t" 134 "madd.s %[output], %[output], $f4, $f5 \n\t" 135 136 "lwc1 $f0, 72(%[p_data]) \n\t" 137 "lwc1 $f1, 72(%[fir_coef]) \n\t" 138 "lwc1 $f2, 76(%[p_data]) \n\t" 139 "lwc1 $f3, 76(%[fir_coef]) \n\t" 140 "madd.s %[output], %[output], $f0, $f1 \n\t" 141 "lwc1 $f4, 80(%[p_data]) \n\t" 142 "lwc1 $f5, 80(%[fir_coef]) \n\t" 143 "madd.s %[output], %[output], $f2, $f3 \n\t" 144 145 "lwc1 $f0, 84(%[p_data]) \n\t" 146 "lwc1 $f1, 84(%[fir_coef]) \n\t" 147 "lwc1 $f2, 88(%[p_data]) \n\t" 148 "madd.s %[output], %[output], $f4, $f5 \n\t" 149 "lwc1 $f3, 88(%[fir_coef]) \n\t" 150 "lwc1 $f4, 92(%[p_data]) \n\t" 151 "madd.s %[output], %[output], $f0, $f1 \n\t" 152 "lwc1 $f5, 92(%[fir_coef]) \n\t" 153 "madd.s %[output], %[output], $f2, $f3 \n\t" 154 155 "lwc1 $f0, 96(%[p_data]) \n\t" 156 "lwc1 $f1, 96(%[fir_coef]) \n\t" 157 "lwc1 $f2, 100(%[p_data]) \n\t" 158 "madd.s %[output], %[output], $f4, $f5 \n\t" 159 "lwc1 $f3, 100(%[fir_coef]) \n\t" 160 "lwc1 $f4, 104(%[p_data]) \n\t" 161 "madd.s %[output], %[output], $f0, $f1 \n\t" 162 "lwc1 $f5, 104(%[fir_coef]) \n\t" 163 "madd.s %[output], %[output], $f2, $f3 \n\t" 164 165 "lwc1 $f0, 108(%[p_data]) \n\t" 166 "lwc1 $f1, 108(%[fir_coef]) \n\t" 167 "madd.s %[output], %[output], $f4, $f5 \n\t" 168 "lwc1 $f2, 112(%[p_data]) \n\t" 169 "lwc1 $f3, 112(%[fir_coef]) \n\t" 170 "madd.s %[output], %[output], $f0, $f1 \n\t" 171 "lwc1 $f4, 116(%[p_data]) \n\t" 172 "lwc1 $f5, 116(%[fir_coef]) \n\t" 173 "lwc1 $f0, 120(%[p_data]) \n\t" 174 "madd.s %[output], %[output], $f2, $f3 \n\t" 175 "lwc1 $f1, 120(%[fir_coef]) \n\t" 176 "madd.s %[output], %[output], $f4, $f5 \n\t" 177 "madd.s %[output], %[output], $f0, $f1 \n\t" 178 179 : [output]"=&f"(output) 180 : [fir_coef]"r"(fir_coef), [p_data]"r"(p_data) 181 : "$f0", "$f1", "$f2", "$f3", "$f4", "$f5", "memory" 182 ); 183 out[i] = output; 184 } 185 memcpy(mem, data + AMRWB_SFR_SIZE_16k, HB_FIR_SIZE * sizeof(float)); 186} 187#endif /* HAVE_INLINE_ASM */ 188