FFmpeg
aacdec_mips.h
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 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  * Authors: Darko Laus (darko@mips.com)
30  * Djordje Pesut (djordje@mips.com)
31  * Mirjana Vulin (mvulin@mips.com)
32  *
33  * AAC Spectral Band Replication decoding functions optimized for MIPS
34  *
35  * This file is part of FFmpeg.
36  *
37  * FFmpeg is free software; you can redistribute it and/or
38  * modify it under the terms of the GNU Lesser General Public
39  * License as published by the Free Software Foundation; either
40  * version 2.1 of the License, or (at your option) any later version.
41  *
42  * FFmpeg is distributed in the hope that it will be useful,
43  * but WITHOUT ANY WARRANTY; without even the implied warranty of
44  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
45  * Lesser General Public License for more details.
46  *
47  * You should have received a copy of the GNU Lesser General Public
48  * License along with FFmpeg; if not, write to the Free Software
49  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
50  */
51 
52 /**
53  * @file
54  * Reference: libavcodec/aacdec.c
55  */
56 
57 #ifndef AVCODEC_MIPS_AACDEC_MIPS_H
58 #define AVCODEC_MIPS_AACDEC_MIPS_H
59 
60 #include "libavcodec/aac.h"
61 #include "libavutil/mips/asmdefs.h"
62 
63 #if HAVE_INLINE_ASM && HAVE_MIPSFPU
64 #if !HAVE_MIPS32R6 && !HAVE_MIPS64R6
65 static inline float *VMUL2_mips(float *dst, const float *v, unsigned idx,
66  const float *scale)
67 {
68  float temp0, temp1, temp2;
69  int temp3, temp4;
70  float *ret;
71 
72  __asm__ volatile(
73  "andi %[temp3], %[idx], 0x0F \n\t"
74  "andi %[temp4], %[idx], 0xF0 \n\t"
75  "sll %[temp3], %[temp3], 2 \n\t"
76  "srl %[temp4], %[temp4], 2 \n\t"
77  "lwc1 %[temp2], 0(%[scale]) \n\t"
78  "lwxc1 %[temp0], %[temp3](%[v]) \n\t"
79  "lwxc1 %[temp1], %[temp4](%[v]) \n\t"
80  "mul.s %[temp0], %[temp0], %[temp2] \n\t"
81  "mul.s %[temp1], %[temp1], %[temp2] \n\t"
82  PTR_ADDIU "%[ret], %[dst], 8 \n\t"
83  "swc1 %[temp0], 0(%[dst]) \n\t"
84  "swc1 %[temp1], 4(%[dst]) \n\t"
85 
86  : [temp0]"=&f"(temp0), [temp1]"=&f"(temp1),
87  [temp2]"=&f"(temp2), [temp3]"=&r"(temp3),
88  [temp4]"=&r"(temp4), [ret]"=&r"(ret)
89  : [idx]"r"(idx), [scale]"r"(scale), [v]"r"(v),
90  [dst]"r"(dst)
91  : "memory"
92  );
93  return ret;
94 }
95 
96 static inline float *VMUL4_mips(float *dst, const float *v, unsigned idx,
97  const float *scale)
98 {
99  int temp0, temp1, temp2, temp3;
100  float temp4, temp5, temp6, temp7, temp8;
101  float *ret;
102 
103  __asm__ volatile(
104  "andi %[temp0], %[idx], 0x03 \n\t"
105  "andi %[temp1], %[idx], 0x0C \n\t"
106  "andi %[temp2], %[idx], 0x30 \n\t"
107  "andi %[temp3], %[idx], 0xC0 \n\t"
108  "sll %[temp0], %[temp0], 2 \n\t"
109  "srl %[temp2], %[temp2], 2 \n\t"
110  "srl %[temp3], %[temp3], 4 \n\t"
111  "lwc1 %[temp4], 0(%[scale]) \n\t"
112  "lwxc1 %[temp5], %[temp0](%[v]) \n\t"
113  "lwxc1 %[temp6], %[temp1](%[v]) \n\t"
114  "lwxc1 %[temp7], %[temp2](%[v]) \n\t"
115  "lwxc1 %[temp8], %[temp3](%[v]) \n\t"
116  "mul.s %[temp5], %[temp5], %[temp4] \n\t"
117  "mul.s %[temp6], %[temp6], %[temp4] \n\t"
118  "mul.s %[temp7], %[temp7], %[temp4] \n\t"
119  "mul.s %[temp8], %[temp8], %[temp4] \n\t"
120  PTR_ADDIU "%[ret], %[dst], 16 \n\t"
121  "swc1 %[temp5], 0(%[dst]) \n\t"
122  "swc1 %[temp6], 4(%[dst]) \n\t"
123  "swc1 %[temp7], 8(%[dst]) \n\t"
124  "swc1 %[temp8], 12(%[dst]) \n\t"
125 
126  : [temp0]"=&r"(temp0), [temp1]"=&r"(temp1),
127  [temp2]"=&r"(temp2), [temp3]"=&r"(temp3),
128  [temp4]"=&f"(temp4), [temp5]"=&f"(temp5),
129  [temp6]"=&f"(temp6), [temp7]"=&f"(temp7),
130  [temp8]"=&f"(temp8), [ret]"=&r"(ret)
131  : [idx]"r"(idx), [scale]"r"(scale), [v]"r"(v),
132  [dst]"r"(dst)
133  : "memory"
134  );
135  return ret;
136 }
137 
138 static inline float *VMUL2S_mips(float *dst, const float *v, unsigned idx,
139  unsigned sign, const float *scale)
140 {
141  int temp0, temp1, temp2, temp3, temp4, temp5;
142  float temp6, temp7, temp8, temp9;
143  float *ret;
144 
145  __asm__ volatile(
146  "andi %[temp0], %[idx], 0x0F \n\t"
147  "andi %[temp1], %[idx], 0xF0 \n\t"
148  "lw %[temp4], 0(%[scale]) \n\t"
149  "srl %[temp2], %[sign], 1 \n\t"
150  "sll %[temp3], %[sign], 31 \n\t"
151  "sll %[temp2], %[temp2], 31 \n\t"
152  "sll %[temp0], %[temp0], 2 \n\t"
153  "srl %[temp1], %[temp1], 2 \n\t"
154  "lwxc1 %[temp8], %[temp0](%[v]) \n\t"
155  "lwxc1 %[temp9], %[temp1](%[v]) \n\t"
156  "xor %[temp5], %[temp4], %[temp2] \n\t"
157  "xor %[temp4], %[temp4], %[temp3] \n\t"
158  "mtc1 %[temp5], %[temp6] \n\t"
159  "mtc1 %[temp4], %[temp7] \n\t"
160  "mul.s %[temp8], %[temp8], %[temp6] \n\t"
161  "mul.s %[temp9], %[temp9], %[temp7] \n\t"
162  PTR_ADDIU "%[ret], %[dst], 8 \n\t"
163  "swc1 %[temp8], 0(%[dst]) \n\t"
164  "swc1 %[temp9], 4(%[dst]) \n\t"
165 
166  : [temp0]"=&r"(temp0), [temp1]"=&r"(temp1),
167  [temp2]"=&r"(temp2), [temp3]"=&r"(temp3),
168  [temp4]"=&r"(temp4), [temp5]"=&r"(temp5),
169  [temp6]"=&f"(temp6), [temp7]"=&f"(temp7),
170  [temp8]"=&f"(temp8), [temp9]"=&f"(temp9),
171  [ret]"=&r"(ret)
172  : [idx]"r"(idx), [scale]"r"(scale), [v]"r"(v),
173  [dst]"r"(dst), [sign]"r"(sign)
174  : "memory"
175  );
176  return ret;
177 }
178 
179 static inline float *VMUL4S_mips(float *dst, const float *v, unsigned idx,
180  unsigned sign, const float *scale)
181 {
182  int temp0, temp1, temp2, temp3, temp4;
183  float temp10, temp11, temp12, temp13, temp14, temp15, temp16, temp17;
184  float *ret;
185  unsigned int mask = 1U << 31;
186 
187  __asm__ volatile(
188  "lw %[temp0], 0(%[scale]) \n\t"
189  "andi %[temp1], %[idx], 0x03 \n\t"
190  "andi %[temp2], %[idx], 0x0C \n\t"
191  "andi %[temp3], %[idx], 0x30 \n\t"
192  "andi %[temp4], %[idx], 0xC0 \n\t"
193  "sll %[temp1], %[temp1], 2 \n\t"
194  "srl %[temp3], %[temp3], 2 \n\t"
195  "srl %[temp4], %[temp4], 4 \n\t"
196  "lwxc1 %[temp10], %[temp1](%[v]) \n\t"
197  "lwxc1 %[temp11], %[temp2](%[v]) \n\t"
198  "lwxc1 %[temp12], %[temp3](%[v]) \n\t"
199  "lwxc1 %[temp13], %[temp4](%[v]) \n\t"
200  "and %[temp1], %[sign], %[mask] \n\t"
201  "srl %[temp2], %[idx], 12 \n\t"
202  "srl %[temp3], %[idx], 13 \n\t"
203  "srl %[temp4], %[idx], 14 \n\t"
204  "andi %[temp2], %[temp2], 1 \n\t"
205  "andi %[temp3], %[temp3], 1 \n\t"
206  "andi %[temp4], %[temp4], 1 \n\t"
207  "sllv %[sign], %[sign], %[temp2] \n\t"
208  "xor %[temp1], %[temp0], %[temp1] \n\t"
209  "and %[temp2], %[sign], %[mask] \n\t"
210  "mtc1 %[temp1], %[temp14] \n\t"
211  "xor %[temp2], %[temp0], %[temp2] \n\t"
212  "sllv %[sign], %[sign], %[temp3] \n\t"
213  "mtc1 %[temp2], %[temp15] \n\t"
214  "and %[temp3], %[sign], %[mask] \n\t"
215  "sllv %[sign], %[sign], %[temp4] \n\t"
216  "xor %[temp3], %[temp0], %[temp3] \n\t"
217  "and %[temp4], %[sign], %[mask] \n\t"
218  "mtc1 %[temp3], %[temp16] \n\t"
219  "xor %[temp4], %[temp0], %[temp4] \n\t"
220  "mtc1 %[temp4], %[temp17] \n\t"
221  "mul.s %[temp10], %[temp10], %[temp14] \n\t"
222  "mul.s %[temp11], %[temp11], %[temp15] \n\t"
223  "mul.s %[temp12], %[temp12], %[temp16] \n\t"
224  "mul.s %[temp13], %[temp13], %[temp17] \n\t"
225  PTR_ADDIU "%[ret], %[dst], 16 \n\t"
226  "swc1 %[temp10], 0(%[dst]) \n\t"
227  "swc1 %[temp11], 4(%[dst]) \n\t"
228  "swc1 %[temp12], 8(%[dst]) \n\t"
229  "swc1 %[temp13], 12(%[dst]) \n\t"
230 
231  : [temp0]"=&r"(temp0), [temp1]"=&r"(temp1),
232  [temp2]"=&r"(temp2), [temp3]"=&r"(temp3),
233  [temp4]"=&r"(temp4), [temp10]"=&f"(temp10),
234  [temp11]"=&f"(temp11), [temp12]"=&f"(temp12),
235  [temp13]"=&f"(temp13), [temp14]"=&f"(temp14),
236  [temp15]"=&f"(temp15), [temp16]"=&f"(temp16),
237  [temp17]"=&f"(temp17), [ret]"=&r"(ret),
238  [sign]"+r"(sign)
239  : [idx]"r"(idx), [scale]"r"(scale), [v]"r"(v),
240  [dst]"r"(dst), [mask]"r"(mask)
241  : "memory"
242  );
243  return ret;
244 }
245 
246 #define VMUL2 VMUL2_mips
247 #define VMUL4 VMUL4_mips
248 #define VMUL2S VMUL2S_mips
249 #define VMUL4S VMUL4S_mips
250 #endif /* !HAVE_MIPS32R6 && !HAVE_MIPS64R6 */
251 #endif /* HAVE_INLINE_ASM && HAVE_MIPSFPU */
252 
253 #endif /* AVCODEC_MIPS_AACDEC_MIPS_H */
asmdefs.h
U
#define U(x)
Definition: vp56_arith.h:37
mask
static const uint16_t mask[17]
Definition: lzw.c:38
aac.h
ret
ret
Definition: filter_design.txt:187
__asm__
__asm__(".macro parse_r var r\n\t" "\\var = -1\n\t" _IFC_REG(0) _IFC_REG(1) _IFC_REG(2) _IFC_REG(3) _IFC_REG(4) _IFC_REG(5) _IFC_REG(6) _IFC_REG(7) _IFC_REG(8) _IFC_REG(9) _IFC_REG(10) _IFC_REG(11) _IFC_REG(12) _IFC_REG(13) _IFC_REG(14) _IFC_REG(15) _IFC_REG(16) _IFC_REG(17) _IFC_REG(18) _IFC_REG(19) _IFC_REG(20) _IFC_REG(21) _IFC_REG(22) _IFC_REG(23) _IFC_REG(24) _IFC_REG(25) _IFC_REG(26) _IFC_REG(27) _IFC_REG(28) _IFC_REG(29) _IFC_REG(30) _IFC_REG(31) ".iflt \\var\n\t" ".error \"Unable to parse register name \\r\"\n\t" ".endif\n\t" ".endm")
PTR_ADDIU
#define PTR_ADDIU
Definition: asmdefs.h:48
Generated on Wed Aug 24 2022 21:34:02 for FFmpeg by   doxygen 1.8.17