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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: Bojan Zivkovic (bojan@mips.com) |
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| 30 | * |
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| 31 | * Compute antialias function optimised for MIPS fixed-point architecture |
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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/mpegaudiodec.c |
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| 53 | */ |
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| 54 | |||
| 55 | #ifndef AVCODEC_MIPS_COMPUTE_ANTIALIAS_FIXED_H |
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| 56 | #define AVCODEC_MIPS_COMPUTE_ANTIALIAS_FIXED_H |
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| 57 | |||
| 58 | #if HAVE_INLINE_ASM |
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| 59 | static void compute_antialias_mips_fixed(MPADecodeContext *s, |
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| 60 | GranuleDef *g) |
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| 61 | { |
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| 62 | int32_t *ptr, *csa; |
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| 63 | int n, i; |
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| 64 | int MAX_lo = 0xffffffff; |
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| 65 | |||
| 66 | /* we antialias only "long" bands */ |
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| 67 | if (g->block_type == 2) { |
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| 68 | if (!g->switch_point) |
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| 69 | return; |
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| 70 | /* XXX: check this for 8000Hz case */ |
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| 71 | n = 1; |
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| 72 | } else { |
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| 73 | n = SBLIMIT - 1; |
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| 74 | } |
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| 75 | |||
| 76 | |||
| 77 | ptr = g->sb_hybrid + 18; |
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| 78 | |||
| 79 | for(i = n;i > 0;i--) { |
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| 80 | int tmp0, tmp1, tmp2, tmp00, tmp11; |
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| 81 | int temp_reg1, temp_reg2, temp_reg3, temp_reg4, temp_reg5, temp_reg6; |
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| 82 | csa = &csa_table[0][0]; |
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| 83 | |||
| 84 | /** |
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| 85 | * instructions are scheduled to minimize pipeline stall. |
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| 86 | */ |
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| 87 | __asm__ volatile ( |
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| 88 | "lw %[tmp0], -1*4(%[ptr]) \n\t" |
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| 89 | "lw %[tmp1], 0*4(%[ptr]) \n\t" |
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| 90 | "lw %[temp_reg1], 0*4(%[csa]) \n\t" |
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| 91 | "lw %[temp_reg2], 2*4(%[csa]) \n\t" |
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| 92 | "add %[tmp2], %[tmp0], %[tmp1] \n\t" |
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| 93 | "lw %[temp_reg3], 3*4(%[csa]) \n\t" |
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| 94 | "mult $ac0, %[tmp2], %[temp_reg1] \n\t" |
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| 95 | "mult $ac1, %[tmp2], %[temp_reg1] \n\t" |
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| 96 | "lw %[tmp00], -2*4(%[ptr]) \n\t" |
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| 97 | "lw %[tmp11], 1*4(%[ptr]) \n\t" |
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| 98 | "lw %[temp_reg4], 4*4(%[csa]) \n\t" |
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| 99 | "mtlo %[MAX_lo], $ac0 \n\t" |
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| 100 | "mtlo $zero, $ac1 \n\t" |
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| 101 | "msub $ac0, %[tmp1], %[temp_reg2] \n\t" |
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| 102 | "madd $ac1, %[tmp0], %[temp_reg3] \n\t" |
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| 103 | "add %[tmp2], %[tmp00], %[tmp11] \n\t" |
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| 104 | "lw %[temp_reg5], 6*4(%[csa]) \n\t" |
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| 105 | "mult $ac2, %[tmp2], %[temp_reg4] \n\t" |
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| 106 | "mult $ac3, %[tmp2], %[temp_reg4] \n\t" |
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| 107 | "mfhi %[temp_reg1], $ac0 \n\t" |
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| 108 | "mfhi %[temp_reg2], $ac1 \n\t" |
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| 109 | "lw %[temp_reg6], 7*4(%[csa]) \n\t" |
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| 110 | "mtlo %[MAX_lo], $ac2 \n\t" |
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| 111 | "msub $ac2, %[tmp11], %[temp_reg5] \n\t" |
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| 112 | "mtlo $zero, $ac3 \n\t" |
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| 113 | "madd $ac3, %[tmp00], %[temp_reg6] \n\t" |
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| 114 | "sll %[temp_reg1], %[temp_reg1], 2 \n\t" |
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| 115 | "sw %[temp_reg1], -1*4(%[ptr]) \n\t" |
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| 116 | "mfhi %[temp_reg4], $ac2 \n\t" |
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| 117 | "sll %[temp_reg2], %[temp_reg2], 2 \n\t" |
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| 118 | "mfhi %[temp_reg5], $ac3 \n\t" |
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| 119 | "sw %[temp_reg2], 0*4(%[ptr]) \n\t" |
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| 120 | "lw %[tmp0], -3*4(%[ptr]) \n\t" |
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| 121 | "lw %[tmp1], 2*4(%[ptr]) \n\t" |
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| 122 | "lw %[temp_reg1], 8*4(%[csa]) \n\t" |
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| 123 | "sll %[temp_reg4], %[temp_reg4], 2 \n\t" |
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| 124 | "add %[tmp2], %[tmp0], %[tmp1] \n\t" |
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| 125 | "sll %[temp_reg5], %[temp_reg5], 2 \n\t" |
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| 126 | "mult $ac0, %[tmp2], %[temp_reg1] \n\t" |
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| 127 | "mult $ac1, %[tmp2], %[temp_reg1] \n\t" |
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| 128 | "sw %[temp_reg4], -2*4(%[ptr]) \n\t" |
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| 129 | "sw %[temp_reg5], 1*4(%[ptr]) \n\t" |
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| 130 | "lw %[temp_reg2], 10*4(%[csa]) \n\t" |
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| 131 | "mtlo %[MAX_lo], $ac0 \n\t" |
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| 132 | "lw %[temp_reg3], 11*4(%[csa]) \n\t" |
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| 133 | "msub $ac0, %[tmp1], %[temp_reg2] \n\t" |
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| 134 | "mtlo $zero, $ac1 \n\t" |
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| 135 | "madd $ac1, %[tmp0], %[temp_reg3] \n\t" |
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| 136 | "lw %[tmp00], -4*4(%[ptr]) \n\t" |
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| 137 | "lw %[tmp11], 3*4(%[ptr]) \n\t" |
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| 138 | "mfhi %[temp_reg1], $ac0 \n\t" |
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| 139 | "lw %[temp_reg4], 12*4(%[csa]) \n\t" |
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| 140 | "mfhi %[temp_reg2], $ac1 \n\t" |
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| 141 | "add %[tmp2], %[tmp00], %[tmp11] \n\t" |
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| 142 | "mult $ac2, %[tmp2], %[temp_reg4] \n\t" |
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| 143 | "mult $ac3, %[tmp2], %[temp_reg4] \n\t" |
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| 144 | "lw %[temp_reg5], 14*4(%[csa]) \n\t" |
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| 145 | "lw %[temp_reg6], 15*4(%[csa]) \n\t" |
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| 146 | "sll %[temp_reg1], %[temp_reg1], 2 \n\t" |
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| 147 | "mtlo %[MAX_lo], $ac2 \n\t" |
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| 148 | "msub $ac2, %[tmp11], %[temp_reg5] \n\t" |
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| 149 | "mtlo $zero, $ac3 \n\t" |
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| 150 | "madd $ac3, %[tmp00], %[temp_reg6] \n\t" |
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| 151 | "sll %[temp_reg2], %[temp_reg2], 2 \n\t" |
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| 152 | "sw %[temp_reg1], -3*4(%[ptr]) \n\t" |
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| 153 | "mfhi %[temp_reg4], $ac2 \n\t" |
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| 154 | "sw %[temp_reg2], 2*4(%[ptr]) \n\t" |
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| 155 | "mfhi %[temp_reg5], $ac3 \n\t" |
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| 156 | "lw %[tmp0], -5*4(%[ptr]) \n\t" |
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| 157 | "lw %[tmp1], 4*4(%[ptr]) \n\t" |
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| 158 | "lw %[temp_reg1], 16*4(%[csa]) \n\t" |
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| 159 | "lw %[temp_reg2], 18*4(%[csa]) \n\t" |
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| 160 | "add %[tmp2], %[tmp0], %[tmp1] \n\t" |
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| 161 | "lw %[temp_reg3], 19*4(%[csa]) \n\t" |
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| 162 | "mult $ac0, %[tmp2], %[temp_reg1] \n\t" |
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| 163 | "mult $ac1, %[tmp2], %[temp_reg1] \n\t" |
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| 164 | "sll %[temp_reg4], %[temp_reg4], 2 \n\t" |
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| 165 | "sll %[temp_reg5], %[temp_reg5], 2 \n\t" |
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| 166 | "sw %[temp_reg4], -4*4(%[ptr]) \n\t" |
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| 167 | "mtlo %[MAX_lo], $ac0 \n\t" |
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| 168 | "msub $ac0, %[tmp1], %[temp_reg2] \n\t" |
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| 169 | "mtlo $zero, $ac1 \n\t" |
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| 170 | "madd $ac1, %[tmp0], %[temp_reg3] \n\t" |
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| 171 | "sw %[temp_reg5], 3*4(%[ptr]) \n\t" |
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| 172 | "lw %[tmp00], -6*4(%[ptr]) \n\t" |
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| 173 | "mfhi %[temp_reg1], $ac0 \n\t" |
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| 174 | "lw %[tmp11], 5*4(%[ptr]) \n\t" |
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| 175 | "mfhi %[temp_reg2], $ac1 \n\t" |
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| 176 | "lw %[temp_reg4], 20*4(%[csa]) \n\t" |
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| 177 | "add %[tmp2], %[tmp00], %[tmp11] \n\t" |
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| 178 | "lw %[temp_reg5], 22*4(%[csa]) \n\t" |
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| 179 | "mult $ac2, %[tmp2], %[temp_reg4] \n\t" |
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| 180 | "mult $ac3, %[tmp2], %[temp_reg4] \n\t" |
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| 181 | "lw %[temp_reg6], 23*4(%[csa]) \n\t" |
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| 182 | "sll %[temp_reg1], %[temp_reg1], 2 \n\t" |
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| 183 | "sll %[temp_reg2], %[temp_reg2], 2 \n\t" |
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| 184 | "mtlo %[MAX_lo], $ac2 \n\t" |
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| 185 | "msub $ac2, %[tmp11], %[temp_reg5] \n\t" |
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| 186 | "mtlo $zero, $ac3 \n\t" |
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| 187 | "madd $ac3, %[tmp00], %[temp_reg6] \n\t" |
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| 188 | "sw %[temp_reg1], -5*4(%[ptr]) \n\t" |
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| 189 | "sw %[temp_reg2], 4*4(%[ptr]) \n\t" |
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| 190 | "mfhi %[temp_reg4], $ac2 \n\t" |
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| 191 | "lw %[tmp0], -7*4(%[ptr]) \n\t" |
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| 192 | "mfhi %[temp_reg5], $ac3 \n\t" |
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| 193 | "lw %[tmp1], 6*4(%[ptr]) \n\t" |
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| 194 | "lw %[temp_reg1], 24*4(%[csa]) \n\t" |
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| 195 | "lw %[temp_reg2], 26*4(%[csa]) \n\t" |
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| 196 | "add %[tmp2], %[tmp0], %[tmp1] \n\t" |
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| 197 | "lw %[temp_reg3], 27*4(%[csa]) \n\t" |
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| 198 | "mult $ac0, %[tmp2], %[temp_reg1] \n\t" |
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| 199 | "mult $ac1, %[tmp2], %[temp_reg1] \n\t" |
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| 200 | "sll %[temp_reg4], %[temp_reg4], 2 \n\t" |
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| 201 | "sll %[temp_reg5], %[temp_reg5], 2 \n\t" |
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| 202 | "sw %[temp_reg4], -6*4(%[ptr]) \n\t" |
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| 203 | "mtlo %[MAX_lo], $ac0 \n\t" |
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| 204 | "msub $ac0, %[tmp1], %[temp_reg2] \n\t" |
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| 205 | "mtlo $zero, $ac1 \n\t" |
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| 206 | "madd $ac1, %[tmp0], %[temp_reg3] \n\t" |
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| 207 | "sw %[temp_reg5], 5*4(%[ptr]) \n\t" |
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| 208 | "lw %[tmp00], -8*4(%[ptr]) \n\t" |
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| 209 | "mfhi %[temp_reg1], $ac0 \n\t" |
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| 210 | "lw %[tmp11], 7*4(%[ptr]) \n\t" |
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| 211 | "mfhi %[temp_reg2], $ac1 \n\t" |
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| 212 | "lw %[temp_reg4], 28*4(%[csa]) \n\t" |
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| 213 | "add %[tmp2], %[tmp00], %[tmp11] \n\t" |
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| 214 | "lw %[temp_reg5], 30*4(%[csa]) \n\t" |
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| 215 | "mult $ac2, %[tmp2], %[temp_reg4] \n\t" |
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| 216 | "mult $ac3, %[tmp2], %[temp_reg4] \n\t" |
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| 217 | "lw %[temp_reg6], 31*4(%[csa]) \n\t" |
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| 218 | "sll %[temp_reg1], %[temp_reg1], 2 \n\t" |
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| 219 | "sll %[temp_reg2], %[temp_reg2], 2 \n\t" |
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| 220 | "mtlo %[MAX_lo], $ac2 \n\t" |
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| 221 | "msub $ac2, %[tmp11], %[temp_reg5] \n\t" |
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| 222 | "mtlo $zero, $ac3 \n\t" |
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| 223 | "madd $ac3, %[tmp00], %[temp_reg6] \n\t" |
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| 224 | "sw %[temp_reg1], -7*4(%[ptr]) \n\t" |
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| 225 | "sw %[temp_reg2], 6*4(%[ptr]) \n\t" |
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| 226 | "mfhi %[temp_reg4], $ac2 \n\t" |
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| 227 | "mfhi %[temp_reg5], $ac3 \n\t" |
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| 228 | "sll %[temp_reg4], %[temp_reg4], 2 \n\t" |
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| 229 | "sll %[temp_reg5], %[temp_reg5], 2 \n\t" |
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| 230 | "sw %[temp_reg4], -8*4(%[ptr]) \n\t" |
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| 231 | "sw %[temp_reg5], 7*4(%[ptr]) \n\t" |
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| 232 | |||
| 233 | : [tmp0] "=&r" (tmp0), [tmp1] "=&r" (tmp1), [tmp2] "=&r" (tmp2), |
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| 234 | [tmp00] "=&r" (tmp00), [tmp11] "=&r" (tmp11), |
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| 235 | [temp_reg1] "=&r" (temp_reg1), [temp_reg2] "=&r" (temp_reg2), |
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| 236 | [temp_reg3] "=&r" (temp_reg3), [temp_reg4] "=&r" (temp_reg4), |
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| 237 | [temp_reg5] "=&r" (temp_reg5), [temp_reg6] "=&r" (temp_reg6) |
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| 238 | : [csa] "r" (csa), [ptr] "r" (ptr), |
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| 239 | [MAX_lo] "r" (MAX_lo) |
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| 240 | : "memory", "hi", "lo", "$ac1hi", "$ac1lo", "$ac2hi", "$ac2lo", |
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| 241 | "$ac3hi", "$ac3lo" |
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| 242 | ); |
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| 243 | |||
| 244 | ptr += 18; |
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| 245 | } |
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| 246 | } |
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| 247 | #define compute_antialias compute_antialias_mips_fixed |
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| 248 | #endif /* HAVE_INLINE_ASM */ |
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| 249 | |||
| 250 | #endif /* AVCODEC_MIPS_COMPUTE_ANTIALIAS_FIXED_H */ |