repositories / deb_ffmpeg.git / blame
| Commit | Line | Data |
|---|---|---|
| 2ba45a60 DM |
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: Bojan Zivkovic (bojan@mips.com) | |
| 30 | * | |
| 31 | * Compute antialias function optimised for MIPS fixed-point architecture | |
| 32 | * | |
| 33 | * This file is part of FFmpeg. | |
| 34 | * | |
| 35 | * FFmpeg is free software; you can redistribute it and/or | |
| 36 | * modify it under the terms of the GNU Lesser General Public | |
| 37 | * License as published by the Free Software Foundation; either | |
| 38 | * version 2.1 of the License, or (at your option) any later version. | |
| 39 | * | |
| 40 | * FFmpeg is distributed in the hope that it will be useful, | |
| 41 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 42 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 43 | * Lesser General Public License for more details. | |
| 44 | * | |
| 45 | * You should have received a copy of the GNU Lesser General Public | |
| 46 | * License along with FFmpeg; if not, write to the Free Software | |
| 47 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
| 48 | */ | |
| 49 | ||
| 50 | /** | |
| 51 | * @file | |
| 52 | * Reference: libavcodec/mpegaudiodec.c | |
| 53 | */ | |
| 54 | ||
| 55 | #ifndef AVCODEC_MIPS_COMPUTE_ANTIALIAS_FIXED_H | |
| 56 | #define AVCODEC_MIPS_COMPUTE_ANTIALIAS_FIXED_H | |
| 57 | ||
| 58 | #if HAVE_INLINE_ASM | |
| 59 | static void compute_antialias_mips_fixed(MPADecodeContext *s, | |
| 60 | GranuleDef *g) | |
| 61 | { | |
| 62 | int32_t *ptr, *csa; | |
| 63 | int n, i; | |
| 64 | int MAX_lo = 0xffffffff; | |
| 65 | ||
| 66 | /* we antialias only "long" bands */ | |
| 67 | if (g->block_type == 2) { | |
| 68 | if (!g->switch_point) | |
| 69 | return; | |
| 70 | /* XXX: check this for 8000Hz case */ | |
| 71 | n = 1; | |
| 72 | } else { | |
| 73 | n = SBLIMIT - 1; | |
| 74 | } | |
| 75 | ||
| 76 | ||
| 77 | ptr = g->sb_hybrid + 18; | |
| 78 | ||
| 79 | for(i = n;i > 0;i--) { | |
| 80 | int tmp0, tmp1, tmp2, tmp00, tmp11; | |
| 81 | int temp_reg1, temp_reg2, temp_reg3, temp_reg4, temp_reg5, temp_reg6; | |
| 82 | csa = &csa_table[0][0]; | |
| 83 | ||
| 84 | /** | |
| 85 | * instructions are scheduled to minimize pipeline stall. | |
| 86 | */ | |
| 87 | __asm__ volatile ( | |
| 88 | "lw %[tmp0], -1*4(%[ptr]) \n\t" | |
| 89 | "lw %[tmp1], 0*4(%[ptr]) \n\t" | |
| 90 | "lw %[temp_reg1], 0*4(%[csa]) \n\t" | |
| 91 | "lw %[temp_reg2], 2*4(%[csa]) \n\t" | |
| 92 | "add %[tmp2], %[tmp0], %[tmp1] \n\t" | |
| 93 | "lw %[temp_reg3], 3*4(%[csa]) \n\t" | |
| 94 | "mult $ac0, %[tmp2], %[temp_reg1] \n\t" | |
| 95 | "mult $ac1, %[tmp2], %[temp_reg1] \n\t" | |
| 96 | "lw %[tmp00], -2*4(%[ptr]) \n\t" | |
| 97 | "lw %[tmp11], 1*4(%[ptr]) \n\t" | |
| 98 | "lw %[temp_reg4], 4*4(%[csa]) \n\t" | |
| 99 | "mtlo %[MAX_lo], $ac0 \n\t" | |
| 100 | "mtlo $zero, $ac1 \n\t" | |
| 101 | "msub $ac0, %[tmp1], %[temp_reg2] \n\t" | |
| 102 | "madd $ac1, %[tmp0], %[temp_reg3] \n\t" | |
| 103 | "add %[tmp2], %[tmp00], %[tmp11] \n\t" | |
| 104 | "lw %[temp_reg5], 6*4(%[csa]) \n\t" | |
| 105 | "mult $ac2, %[tmp2], %[temp_reg4] \n\t" | |
| 106 | "mult $ac3, %[tmp2], %[temp_reg4] \n\t" | |
| 107 | "mfhi %[temp_reg1], $ac0 \n\t" | |
| 108 | "mfhi %[temp_reg2], $ac1 \n\t" | |
| 109 | "lw %[temp_reg6], 7*4(%[csa]) \n\t" | |
| 110 | "mtlo %[MAX_lo], $ac2 \n\t" | |
| 111 | "msub $ac2, %[tmp11], %[temp_reg5] \n\t" | |
| 112 | "mtlo $zero, $ac3 \n\t" | |
| 113 | "madd $ac3, %[tmp00], %[temp_reg6] \n\t" | |
| 114 | "sll %[temp_reg1], %[temp_reg1], 2 \n\t" | |
| 115 | "sw %[temp_reg1], -1*4(%[ptr]) \n\t" | |
| 116 | "mfhi %[temp_reg4], $ac2 \n\t" | |
| 117 | "sll %[temp_reg2], %[temp_reg2], 2 \n\t" | |
| 118 | "mfhi %[temp_reg5], $ac3 \n\t" | |
| 119 | "sw %[temp_reg2], 0*4(%[ptr]) \n\t" | |
| 120 | "lw %[tmp0], -3*4(%[ptr]) \n\t" | |
| 121 | "lw %[tmp1], 2*4(%[ptr]) \n\t" | |
| 122 | "lw %[temp_reg1], 8*4(%[csa]) \n\t" | |
| 123 | "sll %[temp_reg4], %[temp_reg4], 2 \n\t" | |
| 124 | "add %[tmp2], %[tmp0], %[tmp1] \n\t" | |
| 125 | "sll %[temp_reg5], %[temp_reg5], 2 \n\t" | |
| 126 | "mult $ac0, %[tmp2], %[temp_reg1] \n\t" | |
| 127 | "mult $ac1, %[tmp2], %[temp_reg1] \n\t" | |
| 128 | "sw %[temp_reg4], -2*4(%[ptr]) \n\t" | |
| 129 | "sw %[temp_reg5], 1*4(%[ptr]) \n\t" | |
| 130 | "lw %[temp_reg2], 10*4(%[csa]) \n\t" | |
| 131 | "mtlo %[MAX_lo], $ac0 \n\t" | |
| 132 | "lw %[temp_reg3], 11*4(%[csa]) \n\t" | |
| 133 | "msub $ac0, %[tmp1], %[temp_reg2] \n\t" | |
| 134 | "mtlo $zero, $ac1 \n\t" | |
| 135 | "madd $ac1, %[tmp0], %[temp_reg3] \n\t" | |
| 136 | "lw %[tmp00], -4*4(%[ptr]) \n\t" | |
| 137 | "lw %[tmp11], 3*4(%[ptr]) \n\t" | |
| 138 | "mfhi %[temp_reg1], $ac0 \n\t" | |
| 139 | "lw %[temp_reg4], 12*4(%[csa]) \n\t" | |
| 140 | "mfhi %[temp_reg2], $ac1 \n\t" | |
| 141 | "add %[tmp2], %[tmp00], %[tmp11] \n\t" | |
| 142 | "mult $ac2, %[tmp2], %[temp_reg4] \n\t" | |
| 143 | "mult $ac3, %[tmp2], %[temp_reg4] \n\t" | |
| 144 | "lw %[temp_reg5], 14*4(%[csa]) \n\t" | |
| 145 | "lw %[temp_reg6], 15*4(%[csa]) \n\t" | |
| 146 | "sll %[temp_reg1], %[temp_reg1], 2 \n\t" | |
| 147 | "mtlo %[MAX_lo], $ac2 \n\t" | |
| 148 | "msub $ac2, %[tmp11], %[temp_reg5] \n\t" | |
| 149 | "mtlo $zero, $ac3 \n\t" | |
| 150 | "madd $ac3, %[tmp00], %[temp_reg6] \n\t" | |
| 151 | "sll %[temp_reg2], %[temp_reg2], 2 \n\t" | |
| 152 | "sw %[temp_reg1], -3*4(%[ptr]) \n\t" | |
| 153 | "mfhi %[temp_reg4], $ac2 \n\t" | |
| 154 | "sw %[temp_reg2], 2*4(%[ptr]) \n\t" | |
| 155 | "mfhi %[temp_reg5], $ac3 \n\t" | |
| 156 | "lw %[tmp0], -5*4(%[ptr]) \n\t" | |
| 157 | "lw %[tmp1], 4*4(%[ptr]) \n\t" | |
| 158 | "lw %[temp_reg1], 16*4(%[csa]) \n\t" | |
| 159 | "lw %[temp_reg2], 18*4(%[csa]) \n\t" | |
| 160 | "add %[tmp2], %[tmp0], %[tmp1] \n\t" | |
| 161 | "lw %[temp_reg3], 19*4(%[csa]) \n\t" | |
| 162 | "mult $ac0, %[tmp2], %[temp_reg1] \n\t" | |
| 163 | "mult $ac1, %[tmp2], %[temp_reg1] \n\t" | |
| 164 | "sll %[temp_reg4], %[temp_reg4], 2 \n\t" | |
| 165 | "sll %[temp_reg5], %[temp_reg5], 2 \n\t" | |
| 166 | "sw %[temp_reg4], -4*4(%[ptr]) \n\t" | |
| 167 | "mtlo %[MAX_lo], $ac0 \n\t" | |
| 168 | "msub $ac0, %[tmp1], %[temp_reg2] \n\t" | |
| 169 | "mtlo $zero, $ac1 \n\t" | |
| 170 | "madd $ac1, %[tmp0], %[temp_reg3] \n\t" | |
| 171 | "sw %[temp_reg5], 3*4(%[ptr]) \n\t" | |
| 172 | "lw %[tmp00], -6*4(%[ptr]) \n\t" | |
| 173 | "mfhi %[temp_reg1], $ac0 \n\t" | |
| 174 | "lw %[tmp11], 5*4(%[ptr]) \n\t" | |
| 175 | "mfhi %[temp_reg2], $ac1 \n\t" | |
| 176 | "lw %[temp_reg4], 20*4(%[csa]) \n\t" | |
| 177 | "add %[tmp2], %[tmp00], %[tmp11] \n\t" | |
| 178 | "lw %[temp_reg5], 22*4(%[csa]) \n\t" | |
| 179 | "mult $ac2, %[tmp2], %[temp_reg4] \n\t" | |
| 180 | "mult $ac3, %[tmp2], %[temp_reg4] \n\t" | |
| 181 | "lw %[temp_reg6], 23*4(%[csa]) \n\t" | |
| 182 | "sll %[temp_reg1], %[temp_reg1], 2 \n\t" | |
| 183 | "sll %[temp_reg2], %[temp_reg2], 2 \n\t" | |
| 184 | "mtlo %[MAX_lo], $ac2 \n\t" | |
| 185 | "msub $ac2, %[tmp11], %[temp_reg5] \n\t" | |
| 186 | "mtlo $zero, $ac3 \n\t" | |
| 187 | "madd $ac3, %[tmp00], %[temp_reg6] \n\t" | |
| 188 | "sw %[temp_reg1], -5*4(%[ptr]) \n\t" | |
| 189 | "sw %[temp_reg2], 4*4(%[ptr]) \n\t" | |
| 190 | "mfhi %[temp_reg4], $ac2 \n\t" | |
| 191 | "lw %[tmp0], -7*4(%[ptr]) \n\t" | |
| 192 | "mfhi %[temp_reg5], $ac3 \n\t" | |
| 193 | "lw %[tmp1], 6*4(%[ptr]) \n\t" | |
| 194 | "lw %[temp_reg1], 24*4(%[csa]) \n\t" | |
| 195 | "lw %[temp_reg2], 26*4(%[csa]) \n\t" | |
| 196 | "add %[tmp2], %[tmp0], %[tmp1] \n\t" | |
| 197 | "lw %[temp_reg3], 27*4(%[csa]) \n\t" | |
| 198 | "mult $ac0, %[tmp2], %[temp_reg1] \n\t" | |
| 199 | "mult $ac1, %[tmp2], %[temp_reg1] \n\t" | |
| 200 | "sll %[temp_reg4], %[temp_reg4], 2 \n\t" | |
| 201 | "sll %[temp_reg5], %[temp_reg5], 2 \n\t" | |
| 202 | "sw %[temp_reg4], -6*4(%[ptr]) \n\t" | |
| 203 | "mtlo %[MAX_lo], $ac0 \n\t" | |
| 204 | "msub $ac0, %[tmp1], %[temp_reg2] \n\t" | |
| 205 | "mtlo $zero, $ac1 \n\t" | |
| 206 | "madd $ac1, %[tmp0], %[temp_reg3] \n\t" | |
| 207 | "sw %[temp_reg5], 5*4(%[ptr]) \n\t" | |
| 208 | "lw %[tmp00], -8*4(%[ptr]) \n\t" | |
| 209 | "mfhi %[temp_reg1], $ac0 \n\t" | |
| 210 | "lw %[tmp11], 7*4(%[ptr]) \n\t" | |
| 211 | "mfhi %[temp_reg2], $ac1 \n\t" | |
| 212 | "lw %[temp_reg4], 28*4(%[csa]) \n\t" | |
| 213 | "add %[tmp2], %[tmp00], %[tmp11] \n\t" | |
| 214 | "lw %[temp_reg5], 30*4(%[csa]) \n\t" | |
| 215 | "mult $ac2, %[tmp2], %[temp_reg4] \n\t" | |
| 216 | "mult $ac3, %[tmp2], %[temp_reg4] \n\t" | |
| 217 | "lw %[temp_reg6], 31*4(%[csa]) \n\t" | |
| 218 | "sll %[temp_reg1], %[temp_reg1], 2 \n\t" | |
| 219 | "sll %[temp_reg2], %[temp_reg2], 2 \n\t" | |
| 220 | "mtlo %[MAX_lo], $ac2 \n\t" | |
| 221 | "msub $ac2, %[tmp11], %[temp_reg5] \n\t" | |
| 222 | "mtlo $zero, $ac3 \n\t" | |
| 223 | "madd $ac3, %[tmp00], %[temp_reg6] \n\t" | |
| 224 | "sw %[temp_reg1], -7*4(%[ptr]) \n\t" | |
| 225 | "sw %[temp_reg2], 6*4(%[ptr]) \n\t" | |
| 226 | "mfhi %[temp_reg4], $ac2 \n\t" | |
| 227 | "mfhi %[temp_reg5], $ac3 \n\t" | |
| 228 | "sll %[temp_reg4], %[temp_reg4], 2 \n\t" | |
| 229 | "sll %[temp_reg5], %[temp_reg5], 2 \n\t" | |
| 230 | "sw %[temp_reg4], -8*4(%[ptr]) \n\t" | |
| 231 | "sw %[temp_reg5], 7*4(%[ptr]) \n\t" | |
| 232 | ||
| 233 | : [tmp0] "=&r" (tmp0), [tmp1] "=&r" (tmp1), [tmp2] "=&r" (tmp2), | |
| 234 | [tmp00] "=&r" (tmp00), [tmp11] "=&r" (tmp11), | |
| 235 | [temp_reg1] "=&r" (temp_reg1), [temp_reg2] "=&r" (temp_reg2), | |
| 236 | [temp_reg3] "=&r" (temp_reg3), [temp_reg4] "=&r" (temp_reg4), | |
| 237 | [temp_reg5] "=&r" (temp_reg5), [temp_reg6] "=&r" (temp_reg6) | |
| 238 | : [csa] "r" (csa), [ptr] "r" (ptr), | |
| 239 | [MAX_lo] "r" (MAX_lo) | |
| 240 | : "memory", "hi", "lo", "$ac1hi", "$ac1lo", "$ac2hi", "$ac2lo", | |
| 241 | "$ac3hi", "$ac3lo" | |
| 242 | ); | |
| 243 | ||
| 244 | ptr += 18; | |
| 245 | } | |
| 246 | } | |
| 247 | #define compute_antialias compute_antialias_mips_fixed | |
| 248 | #endif /* HAVE_INLINE_ASM */ | |
| 249 | ||
| 250 | #endif /* AVCODEC_MIPS_COMPUTE_ANTIALIAS_FIXED_H */ |