1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
|
/*
* Format Conversion Utils for MIPS
*
* Copyright (c) 2012
* MIPS Technologies, Inc., California.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the MIPS Technologies, Inc., nor the names of is
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE MIPS TECHNOLOGIES, INC. ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE MIPS TECHNOLOGIES, INC. BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* Author: Zoran Lukic (zoranl@mips.com)
* Author: Nedeljko Babic (nbabic@mips.com)
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "config.h"
#include "libavutil/attributes.h"
#include "libavcodec/fmtconvert.h"
#include "libavutil/mips/asmdefs.h"
#if HAVE_INLINE_ASM
static void int32_to_float_fmul_scalar_mips(float *dst, const int *src,
float mul, int len)
{
/*
* variables used in inline assembler
*/
float temp1, temp3, temp5, temp7, temp9, temp11, temp13, temp15;
int rpom1, rpom2, rpom11, rpom21, rpom12, rpom22, rpom13, rpom23;
const int *src_end = src + len;
/*
* loop is 8 times unrolled in assembler in order to achieve better performance
*/
__asm__ volatile (
"i32tf_lp%=: \n\t"
"lw %[rpom11], 0(%[src]) \n\t"
"lw %[rpom21], 4(%[src]) \n\t"
"lw %[rpom1], 8(%[src]) \n\t"
"lw %[rpom2], 12(%[src]) \n\t"
"mtc1 %[rpom11], %[temp1] \n\t"
"mtc1 %[rpom21], %[temp3] \n\t"
"mtc1 %[rpom1], %[temp5] \n\t"
"mtc1 %[rpom2], %[temp7] \n\t"
"lw %[rpom13], 16(%[src]) \n\t"
"lw %[rpom23], 20(%[src]) \n\t"
"lw %[rpom12], 24(%[src]) \n\t"
"lw %[rpom22], 28(%[src]) \n\t"
"mtc1 %[rpom13], %[temp9] \n\t"
"mtc1 %[rpom23], %[temp11] \n\t"
"mtc1 %[rpom12], %[temp13] \n\t"
"mtc1 %[rpom22], %[temp15] \n\t"
PTR_ADDIU "%[src], 32 \n\t"
"cvt.s.w %[temp1], %[temp1] \n\t"
"cvt.s.w %[temp3], %[temp3] \n\t"
"cvt.s.w %[temp5], %[temp5] \n\t"
"cvt.s.w %[temp7], %[temp7] \n\t"
"cvt.s.w %[temp9], %[temp9] \n\t"
"cvt.s.w %[temp11], %[temp11] \n\t"
"cvt.s.w %[temp13], %[temp13] \n\t"
"cvt.s.w %[temp15], %[temp15] \n\t"
"mul.s %[temp1], %[temp1], %[mul] \n\t"
"mul.s %[temp3], %[temp3], %[mul] \n\t"
"mul.s %[temp5], %[temp5], %[mul] \n\t"
"mul.s %[temp7], %[temp7], %[mul] \n\t"
"mul.s %[temp9], %[temp9], %[mul] \n\t"
"mul.s %[temp11], %[temp11], %[mul] \n\t"
"mul.s %[temp13], %[temp13], %[mul] \n\t"
"mul.s %[temp15], %[temp15], %[mul] \n\t"
"swc1 %[temp1], 0(%[dst]) \n\t" /*dst[i] = src[i] * mul; */
"swc1 %[temp3], 4(%[dst]) \n\t" /*dst[i+1] = src[i+1] * mul;*/
"swc1 %[temp5], 8(%[dst]) \n\t" /*dst[i+2] = src[i+2] * mul;*/
"swc1 %[temp7], 12(%[dst]) \n\t" /*dst[i+3] = src[i+3] * mul;*/
"swc1 %[temp9], 16(%[dst]) \n\t" /*dst[i+4] = src[i+4] * mul;*/
"swc1 %[temp11], 20(%[dst]) \n\t" /*dst[i+5] = src[i+5] * mul;*/
"swc1 %[temp13], 24(%[dst]) \n\t" /*dst[i+6] = src[i+6] * mul;*/
"swc1 %[temp15], 28(%[dst]) \n\t" /*dst[i+7] = src[i+7] * mul;*/
PTR_ADDIU "%[dst], 32 \n\t"
"bne %[src], %[src_end], i32tf_lp%= \n\t"
: [temp1]"=&f"(temp1), [temp11]"=&f"(temp11),
[temp13]"=&f"(temp13), [temp15]"=&f"(temp15),
[temp3]"=&f"(temp3), [temp5]"=&f"(temp5),
[temp7]"=&f"(temp7), [temp9]"=&f"(temp9),
[rpom1]"=&r"(rpom1), [rpom2]"=&r"(rpom2),
[rpom11]"=&r"(rpom11), [rpom21]"=&r"(rpom21),
[rpom12]"=&r"(rpom12), [rpom22]"=&r"(rpom22),
[rpom13]"=&r"(rpom13), [rpom23]"=&r"(rpom23),
[dst]"+r"(dst), [src]"+r"(src)
: [mul]"f"(mul), [src_end]"r"(src_end)
: "memory"
);
}
#endif /* HAVE_INLINE_ASM */
av_cold void ff_fmt_convert_init_mips(FmtConvertContext *c)
{
#if HAVE_INLINE_ASM
c->int32_to_float_fmul_scalar = int32_to_float_fmul_scalar_mips;
#endif
}
|
