FFmpeg
 All Data Structures Files Functions Variables Typedefs Enumerations Enumerator Macros Groups Pages
dsputil_mips.c
Go to the documentation of this file.
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 is
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: Zoran Lukic (zoranl@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 #include "config.h"
48 #include "libavcodec/dsputil.h"
49 
50 #if HAVE_INLINE_ASM
51 static void vector_fmul_window_mips(float *dst, const float *src0,
52  const float *src1, const float *win, int len)
53 {
54  int i, j;
55  /*
56  * variables used in inline assembler
57  */
58  float * dst_i, * dst_j, * dst_i2, * dst_j2;
59  float temp, temp1, temp2, temp3, temp4, temp5, temp6, temp7;
60 
61  dst += len;
62  win += len;
63  src0 += len;
64 
65  for (i = -len, j = len - 1; i < 0; i += 8, j -= 8) {
66 
67  dst_i = dst + i;
68  dst_j = dst + j;
69 
70  dst_i2 = dst + i + 4;
71  dst_j2 = dst + j - 4;
72 
73  __asm__ volatile (
74  "mul.s %[temp], %[s1], %[wi] \n\t"
75  "mul.s %[temp1], %[s1], %[wj] \n\t"
76  "mul.s %[temp2], %[s11], %[wi1] \n\t"
77  "mul.s %[temp3], %[s11], %[wj1] \n\t"
78 
79  "msub.s %[temp], %[temp], %[s0], %[wj] \n\t"
80  "madd.s %[temp1], %[temp1], %[s0], %[wi] \n\t"
81  "msub.s %[temp2], %[temp2], %[s01], %[wj1] \n\t"
82  "madd.s %[temp3], %[temp3], %[s01], %[wi1] \n\t"
83 
84  "swc1 %[temp], 0(%[dst_i]) \n\t" /* dst[i] = s0*wj - s1*wi; */
85  "swc1 %[temp1], 0(%[dst_j]) \n\t" /* dst[j] = s0*wi + s1*wj; */
86  "swc1 %[temp2], 4(%[dst_i]) \n\t" /* dst[i+1] = s01*wj1 - s11*wi1; */
87  "swc1 %[temp3], -4(%[dst_j]) \n\t" /* dst[j-1] = s01*wi1 + s11*wj1; */
88 
89  "mul.s %[temp4], %[s12], %[wi2] \n\t"
90  "mul.s %[temp5], %[s12], %[wj2] \n\t"
91  "mul.s %[temp6], %[s13], %[wi3] \n\t"
92  "mul.s %[temp7], %[s13], %[wj3] \n\t"
93 
94  "msub.s %[temp4], %[temp4], %[s02], %[wj2] \n\t"
95  "madd.s %[temp5], %[temp5], %[s02], %[wi2] \n\t"
96  "msub.s %[temp6], %[temp6], %[s03], %[wj3] \n\t"
97  "madd.s %[temp7], %[temp7], %[s03], %[wi3] \n\t"
98 
99  "swc1 %[temp4], 8(%[dst_i]) \n\t" /* dst[i+2] = s02*wj2 - s12*wi2; */
100  "swc1 %[temp5], -8(%[dst_j]) \n\t" /* dst[j-2] = s02*wi2 + s12*wj2; */
101  "swc1 %[temp6], 12(%[dst_i]) \n\t" /* dst[i+2] = s03*wj3 - s13*wi3; */
102  "swc1 %[temp7], -12(%[dst_j]) \n\t" /* dst[j-3] = s03*wi3 + s13*wj3; */
103  : [temp]"=&f"(temp), [temp1]"=&f"(temp1), [temp2]"=&f"(temp2),
104  [temp3]"=&f"(temp3), [temp4]"=&f"(temp4), [temp5]"=&f"(temp5),
105  [temp6]"=&f"(temp6), [temp7]"=&f"(temp7)
106  : [dst_j]"r"(dst_j), [dst_i]"r" (dst_i),
107  [s0] "f"(src0[i]), [wj] "f"(win[j]), [s1] "f"(src1[j]),
108  [wi] "f"(win[i]), [s01]"f"(src0[i + 1]),[wj1]"f"(win[j - 1]),
109  [s11]"f"(src1[j - 1]), [wi1]"f"(win[i + 1]), [s02]"f"(src0[i + 2]),
110  [wj2]"f"(win[j - 2]), [s12]"f"(src1[j - 2]),[wi2]"f"(win[i + 2]),
111  [s03]"f"(src0[i + 3]), [wj3]"f"(win[j - 3]), [s13]"f"(src1[j - 3]),
112  [wi3]"f"(win[i + 3])
113  : "memory"
114  );
115 
116  __asm__ volatile (
117  "mul.s %[temp], %[s1], %[wi] \n\t"
118  "mul.s %[temp1], %[s1], %[wj] \n\t"
119  "mul.s %[temp2], %[s11], %[wi1] \n\t"
120  "mul.s %[temp3], %[s11], %[wj1] \n\t"
121 
122  "msub.s %[temp], %[temp], %[s0], %[wj] \n\t"
123  "madd.s %[temp1], %[temp1], %[s0], %[wi] \n\t"
124  "msub.s %[temp2], %[temp2], %[s01], %[wj1] \n\t"
125  "madd.s %[temp3], %[temp3], %[s01], %[wi1] \n\t"
126 
127  "swc1 %[temp], 0(%[dst_i2]) \n\t" /* dst[i] = s0*wj - s1*wi; */
128  "swc1 %[temp1], 0(%[dst_j2]) \n\t" /* dst[j] = s0*wi + s1*wj; */
129  "swc1 %[temp2], 4(%[dst_i2]) \n\t" /* dst[i+1] = s01*wj1 - s11*wi1; */
130  "swc1 %[temp3], -4(%[dst_j2]) \n\t" /* dst[j-1] = s01*wi1 + s11*wj1; */
131 
132  "mul.s %[temp4], %[s12], %[wi2] \n\t"
133  "mul.s %[temp5], %[s12], %[wj2] \n\t"
134  "mul.s %[temp6], %[s13], %[wi3] \n\t"
135  "mul.s %[temp7], %[s13], %[wj3] \n\t"
136 
137  "msub.s %[temp4], %[temp4], %[s02], %[wj2] \n\t"
138  "madd.s %[temp5], %[temp5], %[s02], %[wi2] \n\t"
139  "msub.s %[temp6], %[temp6], %[s03], %[wj3] \n\t"
140  "madd.s %[temp7], %[temp7], %[s03], %[wi3] \n\t"
141 
142  "swc1 %[temp4], 8(%[dst_i2]) \n\t" /* dst[i+2] = s02*wj2 - s12*wi2; */
143  "swc1 %[temp5], -8(%[dst_j2]) \n\t" /* dst[j-2] = s02*wi2 + s12*wj2; */
144  "swc1 %[temp6], 12(%[dst_i2]) \n\t" /* dst[i+2] = s03*wj3 - s13*wi3; */
145  "swc1 %[temp7], -12(%[dst_j2]) \n\t" /* dst[j-3] = s03*wi3 + s13*wj3; */
146  : [temp]"=&f"(temp),
147  [temp1]"=&f"(temp1), [temp2]"=&f"(temp2), [temp3]"=&f"(temp3),
148  [temp4]"=&f"(temp4), [temp5]"=&f"(temp5), [temp6]"=&f"(temp6),
149  [temp7] "=&f" (temp7)
150  : [dst_j2]"r"(dst_j2), [dst_i2]"r"(dst_i2),
151  [s0] "f"(src0[i + 4]), [wj] "f"(win[j - 4]), [s1] "f"(src1[j - 4]),
152  [wi] "f"(win[i + 4]), [s01]"f"(src0[i + 5]),[wj1]"f"(win[j - 5]),
153  [s11]"f"(src1[j - 5]), [wi1]"f"(win[i + 5]), [s02]"f"(src0[i + 6]),
154  [wj2]"f"(win[j - 6]), [s12]"f"(src1[j - 6]),[wi2]"f"(win[i + 6]),
155  [s03]"f"(src0[i + 7]), [wj3]"f"(win[j - 7]), [s13]"f"(src1[j - 7]),
156  [wi3]"f"(win[i + 7])
157  : "memory"
158  );
159  }
160 }
161 #endif /* HAVE_INLINE_ASM */
162 
163 av_cold void ff_dsputil_init_mips( DSPContext* c, AVCodecContext *avctx )
164 {
165 #if HAVE_INLINE_ASM
166  c->vector_fmul_window = vector_fmul_window_mips;
167 #endif
168 }
Generated on Sat May 25 2013 03:58:36 for FFmpeg by   doxygen 1.8.2