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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 | |
57 | void 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 */ |