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| 4349 | Serge | 1 | /* |
| 2 | * Copyright (c) 2012 |
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| 3 | * MIPS Technologies, Inc., California. |
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| 4 | * |
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| 5 | * Redistribution and use in source and binary forms, with or without |
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| 6 | * modification, are permitted provided that the following conditions |
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| 7 | * are met: |
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| 8 | * 1. Redistributions of source code must retain the above copyright |
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| 9 | * notice, this list of conditions and the following disclaimer. |
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| 10 | * 2. Redistributions in binary form must reproduce the above copyright |
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| 11 | * notice, this list of conditions and the following disclaimer in the |
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| 12 | * documentation and/or other materials provided with the distribution. |
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| 13 | * 3. Neither the name of the MIPS Technologies, Inc., nor the names of its |
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| 14 | * contributors may be used to endorse or promote products derived from |
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| 15 | * this software without specific prior written permission. |
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| 16 | * |
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| 17 | * THIS SOFTWARE IS PROVIDED BY THE MIPS TECHNOLOGIES, INC. ``AS IS'' AND |
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| 18 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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| 19 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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| 20 | * ARE DISCLAIMED. IN NO EVENT SHALL THE MIPS TECHNOLOGIES, INC. BE LIABLE |
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| 21 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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| 22 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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| 23 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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| 24 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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| 25 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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| 26 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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| 27 | * SUCH DAMAGE. |
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| 28 | * |
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| 29 | * Author: Nedeljko Babic (nbabic@mips.com) |
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| 30 | * |
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| 31 | * various filters for ACELP-based codecs optimized for MIPS |
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| 32 | * |
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| 33 | * This file is part of FFmpeg. |
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| 34 | * |
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| 35 | * FFmpeg is free software; you can redistribute it and/or |
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| 36 | * modify it under the terms of the GNU Lesser General Public |
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| 37 | * License as published by the Free Software Foundation; either |
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| 38 | * version 2.1 of the License, or (at your option) any later version. |
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| 39 | * |
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| 40 | * FFmpeg is distributed in the hope that it will be useful, |
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| 41 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 42 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 43 | * Lesser General Public License for more details. |
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| 44 | * |
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| 45 | * You should have received a copy of the GNU Lesser General Public |
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| 46 | * License along with FFmpeg; if not, write to the Free Software |
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| 47 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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| 48 | */ |
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| 49 | |||
| 50 | /** |
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| 51 | * @file |
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| 52 | * Reference: libavcodec/acelp_filters.c |
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| 53 | */ |
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| 54 | #include "config.h" |
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| 55 | #include "libavutil/attributes.h" |
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| 56 | #include "libavcodec/acelp_filters.h" |
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| 57 | |||
| 58 | #if HAVE_INLINE_ASM |
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| 59 | static void ff_acelp_interpolatef_mips(float *out, const float *in, |
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| 60 | const float *filter_coeffs, int precision, |
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| 61 | int frac_pos, int filter_length, int length) |
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| 62 | { |
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| 63 | int n, i; |
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| 64 | int prec = precision * 4; |
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| 65 | int fc_offset = precision - frac_pos; |
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| 66 | float in_val_p, in_val_m, fc_val_p, fc_val_m; |
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| 67 | |||
| 68 | for (n = 0; n < length; n++) { |
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| 69 | /** |
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| 70 | * four pointers are defined in order to minimize number of |
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| 71 | * computations done in inner loop |
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| 72 | */ |
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| 73 | const float *p_in_p = &in[n]; |
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| 74 | const float *p_in_m = &in[n-1]; |
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| 75 | const float *p_filter_coeffs_p = &filter_coeffs[frac_pos]; |
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| 76 | const float *p_filter_coeffs_m = filter_coeffs + fc_offset; |
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| 77 | float v = 0; |
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| 78 | |||
| 79 | for (i = 0; i < filter_length;i++) { |
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| 80 | __asm__ volatile ( |
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| 81 | "lwc1 %[in_val_p], 0(%[p_in_p]) \n\t" |
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| 82 | "lwc1 %[fc_val_p], 0(%[p_filter_coeffs_p]) \n\t" |
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| 83 | "lwc1 %[in_val_m], 0(%[p_in_m]) \n\t" |
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| 84 | "lwc1 %[fc_val_m], 0(%[p_filter_coeffs_m]) \n\t" |
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| 85 | "addiu %[p_in_p], %[p_in_p], 4 \n\t" |
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| 86 | "madd.s %[v],%[v], %[in_val_p],%[fc_val_p] \n\t" |
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| 87 | "addiu %[p_in_m], %[p_in_m], -4 \n\t" |
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| 88 | "addu %[p_filter_coeffs_p], %[p_filter_coeffs_p], %[prec] \n\t" |
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| 89 | "addu %[p_filter_coeffs_m], %[p_filter_coeffs_m], %[prec] \n\t" |
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| 90 | "madd.s %[v],%[v],%[in_val_m], %[fc_val_m] \n\t" |
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| 91 | |||
| 92 | : [v] "=&f" (v),[p_in_p] "+r" (p_in_p), [p_in_m] "+r" (p_in_m), |
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| 93 | [p_filter_coeffs_p] "+r" (p_filter_coeffs_p), |
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| 94 | [in_val_p] "=&f" (in_val_p), [in_val_m] "=&f" (in_val_m), |
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| 95 | [fc_val_p] "=&f" (fc_val_p), [fc_val_m] "=&f" (fc_val_m), |
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| 96 | [p_filter_coeffs_m] "+r" (p_filter_coeffs_m) |
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| 97 | : [prec] "r" (prec) |
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| 98 | : "memory" |
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| 99 | ); |
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| 100 | } |
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| 101 | out[n] = v; |
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| 102 | } |
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| 103 | } |
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| 104 | |||
| 105 | static void ff_acelp_apply_order_2_transfer_function_mips(float *out, const float *in, |
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| 106 | const float zero_coeffs[2], |
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| 107 | const float pole_coeffs[2], |
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| 108 | float gain, float mem[2], int n) |
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| 109 | { |
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| 110 | /** |
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| 111 | * loop is unrolled eight times |
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| 112 | */ |
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| 113 | |||
| 114 | __asm__ volatile ( |
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| 115 | "lwc1 $f0, 0(%[mem]) \n\t" |
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| 116 | "blez %[n], ff_acelp_apply_order_2_transfer_function_end%= \n\t" |
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| 117 | "lwc1 $f1, 4(%[mem]) \n\t" |
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| 118 | "lwc1 $f2, 0(%[pole_coeffs]) \n\t" |
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| 119 | "lwc1 $f3, 4(%[pole_coeffs]) \n\t" |
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| 120 | "lwc1 $f4, 0(%[zero_coeffs]) \n\t" |
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| 121 | "lwc1 $f5, 4(%[zero_coeffs]) \n\t" |
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| 122 | |||
| 123 | "ff_acelp_apply_order_2_transfer_function_madd%=: \n\t" |
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| 124 | |||
| 125 | "lwc1 $f6, 0(%[in]) \n\t" |
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| 126 | "mul.s $f9, $f3, $f1 \n\t" |
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| 127 | "mul.s $f7, $f2, $f0 \n\t" |
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| 128 | "msub.s $f7, $f7, %[gain], $f6 \n\t" |
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| 129 | "sub.s $f7, $f7, $f9 \n\t" |
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| 130 | "madd.s $f8, $f7, $f4, $f0 \n\t" |
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| 131 | "madd.s $f8, $f8, $f5, $f1 \n\t" |
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| 132 | "lwc1 $f11, 4(%[in]) \n\t" |
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| 133 | "mul.s $f12, $f3, $f0 \n\t" |
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| 134 | "mul.s $f13, $f2, $f7 \n\t" |
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| 135 | "msub.s $f13, $f13, %[gain], $f11 \n\t" |
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| 136 | "sub.s $f13, $f13, $f12 \n\t" |
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| 137 | "madd.s $f14, $f13, $f4, $f7 \n\t" |
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| 138 | "madd.s $f14, $f14, $f5, $f0 \n\t" |
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| 139 | "swc1 $f8, 0(%[out]) \n\t" |
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| 140 | "lwc1 $f6, 8(%[in]) \n\t" |
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| 141 | "mul.s $f9, $f3, $f7 \n\t" |
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| 142 | "mul.s $f15, $f2, $f13 \n\t" |
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| 143 | "msub.s $f15, $f15, %[gain], $f6 \n\t" |
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| 144 | "sub.s $f15, $f15, $f9 \n\t" |
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| 145 | "madd.s $f8, $f15, $f4, $f13 \n\t" |
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| 146 | "madd.s $f8, $f8, $f5, $f7 \n\t" |
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| 147 | "swc1 $f14, 4(%[out]) \n\t" |
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| 148 | "lwc1 $f11, 12(%[in]) \n\t" |
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| 149 | "mul.s $f12, $f3, $f13 \n\t" |
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| 150 | "mul.s $f16, $f2, $f15 \n\t" |
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| 151 | "msub.s $f16, $f16, %[gain], $f11 \n\t" |
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| 152 | "sub.s $f16, $f16, $f12 \n\t" |
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| 153 | "madd.s $f14, $f16, $f4, $f15 \n\t" |
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| 154 | "madd.s $f14, $f14, $f5, $f13 \n\t" |
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| 155 | "swc1 $f8, 8(%[out]) \n\t" |
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| 156 | "lwc1 $f6, 16(%[in]) \n\t" |
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| 157 | "mul.s $f9, $f3, $f15 \n\t" |
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| 158 | "mul.s $f7, $f2, $f16 \n\t" |
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| 159 | "msub.s $f7, $f7, %[gain], $f6 \n\t" |
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| 160 | "sub.s $f7, $f7, $f9 \n\t" |
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| 161 | "madd.s $f8, $f7, $f4, $f16 \n\t" |
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| 162 | "madd.s $f8, $f8, $f5, $f15 \n\t" |
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| 163 | "swc1 $f14, 12(%[out]) \n\t" |
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| 164 | "lwc1 $f11, 20(%[in]) \n\t" |
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| 165 | "mul.s $f12, $f3, $f16 \n\t" |
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| 166 | "mul.s $f13, $f2, $f7 \n\t" |
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| 167 | "msub.s $f13, $f13, %[gain], $f11 \n\t" |
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| 168 | "sub.s $f13, $f13, $f12 \n\t" |
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| 169 | "madd.s $f14, $f13, $f4, $f7 \n\t" |
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| 170 | "madd.s $f14, $f14, $f5, $f16 \n\t" |
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| 171 | "swc1 $f8, 16(%[out]) \n\t" |
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| 172 | "lwc1 $f6, 24(%[in]) \n\t" |
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| 173 | "mul.s $f9, $f3, $f7 \n\t" |
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| 174 | "mul.s $f15, $f2, $f13 \n\t" |
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| 175 | "msub.s $f15, $f15, %[gain], $f6 \n\t" |
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| 176 | "sub.s $f1, $f15, $f9 \n\t" |
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| 177 | "madd.s $f8, $f1, $f4, $f13 \n\t" |
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| 178 | "madd.s $f8, $f8, $f5, $f7 \n\t" |
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| 179 | "swc1 $f14, 20(%[out]) \n\t" |
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| 180 | "lwc1 $f11, 28(%[in]) \n\t" |
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| 181 | "mul.s $f12, $f3, $f13 \n\t" |
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| 182 | "mul.s $f16, $f2, $f1 \n\t" |
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| 183 | "msub.s $f16, $f16, %[gain], $f11 \n\t" |
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| 184 | "sub.s $f0, $f16, $f12 \n\t" |
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| 185 | "madd.s $f14, $f0, $f4, $f1 \n\t" |
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| 186 | "madd.s $f14, $f14, $f5, $f13 \n\t" |
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| 187 | "swc1 $f8, 24(%[out]) \n\t" |
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| 188 | "addiu %[out], 32 \n\t" |
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| 189 | "addiu %[in], 32 \n\t" |
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| 190 | "addiu %[n], -8 \n\t" |
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| 191 | "swc1 $f14, -4(%[out]) \n\t" |
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| 192 | "bnez %[n], ff_acelp_apply_order_2_transfer_function_madd%= \n\t" |
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| 193 | "swc1 $f1, 4(%[mem]) \n\t" |
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| 194 | "swc1 $f0, 0(%[mem]) \n\t" |
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| 195 | |||
| 196 | "ff_acelp_apply_order_2_transfer_function_end%=: \n\t" |
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| 197 | |||
| 198 | : [out] "+r" (out), |
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| 199 | [in] "+r" (in), [gain] "+f" (gain), |
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| 200 | [n] "+r" (n), [mem] "+r" (mem) |
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| 201 | : [zero_coeffs] "r" (zero_coeffs), |
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| 202 | [pole_coeffs] "r" (pole_coeffs) |
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| 203 | : "$f0", "$f1", "$f2", "$f3", "$f4", "$f5", |
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| 204 | "$f6", "$f7", "$f8", "$f9", "$f10", "$f11", |
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| 205 | "$f12", "$f13", "$f14", "$f15", "$f16", "memory" |
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| 206 | ); |
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| 207 | } |
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| 208 | #endif /* HAVE_INLINE_ASM */ |
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| 209 | |||
| 210 | void ff_acelp_filter_init_mips(ACELPFContext *c) |
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| 211 | { |
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| 212 | #if HAVE_INLINE_ASM |
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| 213 | c->acelp_interpolatef = ff_acelp_interpolatef_mips; |
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| 214 | c->acelp_apply_order_2_transfer_function = ff_acelp_apply_order_2_transfer_function_mips; |
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| 215 | #endif |
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| 216 | } |