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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 floating-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_FLOAT_H |
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| 56 | #define AVCODEC_MIPS_COMPUTE_ANTIALIAS_FLOAT_H |
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| 57 | |||
| 58 | #if HAVE_INLINE_ASM |
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| 59 | static void compute_antialias_mips_float(MPADecodeContext *s, |
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| 60 | GranuleDef *g) |
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| 61 | { |
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| 62 | float *ptr, *ptr_end; |
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| 63 | float *csa = &csa_table[0][0]; |
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| 64 | int n; |
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| 65 | /* temporary variables */ |
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| 66 | float in1, in2, in3, in4, in5, in6, in7, in8; |
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| 67 | float out1, out2, out3, out4; |
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| 68 | |||
| 69 | ptr = g->sb_hybrid + 18; |
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| 70 | /* we antialias only "long" bands */ |
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| 71 | if (g->block_type == 2) { |
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| 72 | if (!g->switch_point) |
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| 73 | return; |
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| 74 | /* XXX: check this for 8000Hz case */ |
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| 75 | n = 1; |
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| 76 | ptr_end = ptr + 18; |
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| 77 | } else { |
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| 78 | n = 31; |
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| 79 | ptr_end = ptr + 558; |
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| 80 | } |
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| 81 | |||
| 82 | /** |
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| 83 | * instructions are scheduled to minimize pipeline stall. |
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| 84 | */ |
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| 85 | |||
| 86 | __asm__ volatile ( |
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| 87 | "compute_antialias_float_loop%=: \t\n" |
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| 88 | "lwc1 %[in1], -1*4(%[ptr]) \t\n" |
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| 89 | "lwc1 %[in2], 0(%[csa]) \t\n" |
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| 90 | "lwc1 %[in3], 1*4(%[csa]) \t\n" |
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| 91 | "lwc1 %[in4], 0(%[ptr]) \t\n" |
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| 92 | "lwc1 %[in5], -2*4(%[ptr]) \t\n" |
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| 93 | "lwc1 %[in6], 4*4(%[csa]) \t\n" |
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| 94 | "mul.s %[out1], %[in1], %[in2] \t\n" |
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| 95 | "mul.s %[out2], %[in1], %[in3] \t\n" |
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| 96 | "lwc1 %[in7], 5*4(%[csa]) \t\n" |
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| 97 | "lwc1 %[in8], 1*4(%[ptr]) \t\n" |
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| 98 | "nmsub.s %[out1], %[out1], %[in3], %[in4] \t\n" |
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| 99 | "madd.s %[out2], %[out2], %[in2], %[in4] \t\n" |
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| 100 | "mul.s %[out3], %[in5], %[in6] \t\n" |
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| 101 | "mul.s %[out4], %[in5], %[in7] \t\n" |
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| 102 | "lwc1 %[in1], -3*4(%[ptr]) \t\n" |
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| 103 | "swc1 %[out1], -1*4(%[ptr]) \t\n" |
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| 104 | "swc1 %[out2], 0(%[ptr]) \t\n" |
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| 105 | "nmsub.s %[out3], %[out3], %[in7], %[in8] \t\n" |
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| 106 | "madd.s %[out4], %[out4], %[in6], %[in8] \t\n" |
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| 107 | "lwc1 %[in2], 8*4(%[csa]) \t\n" |
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| 108 | "swc1 %[out3], -2*4(%[ptr]) \t\n" |
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| 109 | "swc1 %[out4], 1*4(%[ptr]) \t\n" |
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| 110 | "lwc1 %[in3], 9*4(%[csa]) \t\n" |
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| 111 | "lwc1 %[in4], 2*4(%[ptr]) \t\n" |
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| 112 | "mul.s %[out1], %[in1], %[in2] \t\n" |
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| 113 | "lwc1 %[in5], -4*4(%[ptr]) \t\n" |
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| 114 | "lwc1 %[in6], 12*4(%[csa]) \t\n" |
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| 115 | "mul.s %[out2], %[in1], %[in3] \t\n" |
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| 116 | "lwc1 %[in7], 13*4(%[csa]) \t\n" |
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| 117 | "nmsub.s %[out1], %[out1], %[in3], %[in4] \t\n" |
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| 118 | "lwc1 %[in8], 3*4(%[ptr]) \t\n" |
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| 119 | "mul.s %[out3], %[in5], %[in6] \t\n" |
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| 120 | "madd.s %[out2], %[out2], %[in2], %[in4] \t\n" |
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| 121 | "mul.s %[out4], %[in5], %[in7] \t\n" |
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| 122 | "swc1 %[out1], -3*4(%[ptr]) \t\n" |
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| 123 | "lwc1 %[in1], -5*4(%[ptr]) \t\n" |
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| 124 | "nmsub.s %[out3], %[out3], %[in7], %[in8] \t\n" |
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| 125 | "swc1 %[out2], 2*4(%[ptr]) \t\n" |
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| 126 | "madd.s %[out4], %[out4], %[in6], %[in8] \t\n" |
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| 127 | "lwc1 %[in2], 16*4(%[csa]) \t\n" |
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| 128 | "lwc1 %[in3], 17*4(%[csa]) \t\n" |
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| 129 | "swc1 %[out3], -4*4(%[ptr]) \t\n" |
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| 130 | "lwc1 %[in4], 4*4(%[ptr]) \t\n" |
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| 131 | "swc1 %[out4], 3*4(%[ptr]) \t\n" |
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| 132 | "mul.s %[out1], %[in1], %[in2] \t\n" |
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| 133 | "mul.s %[out2], %[in1], %[in3] \t\n" |
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| 134 | "lwc1 %[in5], -6*4(%[ptr]) \t\n" |
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| 135 | "lwc1 %[in6], 20*4(%[csa]) \t\n" |
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| 136 | "lwc1 %[in7], 21*4(%[csa]) \t\n" |
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| 137 | "nmsub.s %[out1], %[out1], %[in3], %[in4] \t\n" |
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| 138 | "madd.s %[out2], %[out2], %[in2], %[in4] \t\n" |
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| 139 | "lwc1 %[in8], 5*4(%[ptr]) \t\n" |
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| 140 | "mul.s %[out3], %[in5], %[in6] \t\n" |
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| 141 | "mul.s %[out4], %[in5], %[in7] \t\n" |
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| 142 | "swc1 %[out1], -5*4(%[ptr]) \t\n" |
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| 143 | "swc1 %[out2], 4*4(%[ptr]) \t\n" |
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| 144 | "lwc1 %[in1], -7*4(%[ptr]) \t\n" |
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| 145 | "nmsub.s %[out3], %[out3], %[in7], %[in8] \t\n" |
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| 146 | "madd.s %[out4], %[out4], %[in6], %[in8] \t\n" |
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| 147 | "lwc1 %[in2], 24*4(%[csa]) \t\n" |
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| 148 | "lwc1 %[in3], 25*4(%[csa]) \t\n" |
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| 149 | "lwc1 %[in4], 6*4(%[ptr]) \t\n" |
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| 150 | "swc1 %[out3], -6*4(%[ptr]) \t\n" |
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| 151 | "swc1 %[out4], 5*4(%[ptr]) \t\n" |
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| 152 | "mul.s %[out1], %[in1], %[in2] \t\n" |
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| 153 | "lwc1 %[in5], -8*4(%[ptr]) \t\n" |
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| 154 | "mul.s %[out2], %[in1], %[in3] \t\n" |
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| 155 | "lwc1 %[in6], 28*4(%[csa]) \t\n" |
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| 156 | "lwc1 %[in7], 29*4(%[csa]) \t\n" |
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| 157 | "nmsub.s %[out1], %[out1], %[in3], %[in4] \t\n" |
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| 158 | "lwc1 %[in8], 7*4(%[ptr]) \t\n" |
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| 159 | "madd.s %[out2], %[out2], %[in2], %[in4] \t\n" |
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| 160 | "mul.s %[out3], %[in5], %[in6] \t\n" |
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| 161 | "mul.s %[out4], %[in5], %[in7] \t\n" |
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| 162 | "swc1 %[out1], -7*4(%[ptr]) \t\n" |
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| 163 | "swc1 %[out2], 6*4(%[ptr]) \t\n" |
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| 164 | "addiu %[ptr], %[ptr], 72 \t\n" |
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| 165 | "nmsub.s %[out3], %[out3], %[in7], %[in8] \t\n" |
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| 166 | "madd.s %[out4], %[out4], %[in6], %[in8] \t\n" |
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| 167 | "swc1 %[out3], -26*4(%[ptr]) \t\n" |
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| 168 | "swc1 %[out4], -11*4(%[ptr]) \t\n" |
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| 169 | "bne %[ptr], %[ptr_end], compute_antialias_float_loop%= \t\n" |
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| 170 | |||
| 171 | : [ptr] "+r" (ptr), |
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| 172 | [in1] "=&f" (in1), [in2] "=&f" (in2), |
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| 173 | [in3] "=&f" (in3), [in4] "=&f" (in4), |
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| 174 | [in5] "=&f" (in5), [in6] "=&f" (in6), |
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| 175 | [in7] "=&f" (in7), [in8] "=&f" (in8), |
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| 176 | [out1] "=&f" (out1), [out2] "=&f" (out2), |
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| 177 | [out3] "=&f" (out3), [out4] "=&f" (out4) |
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| 178 | : [csa] "r" (csa), [ptr_end] "r" (ptr_end) |
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| 179 | : "memory" |
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| 180 | ); |
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| 181 | } |
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| 182 | #define compute_antialias compute_antialias_mips_float |
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| 183 | #endif /* HAVE_INLINE_ASM */ |
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| 184 | |||
| 185 | #endif /* AVCODEC_MIPS_COMPUTE_ANTIALIAS_FLOAT_H */ |