summaryrefslogtreecommitdiffstats
path: root/media/ffvpx/libavutil/arm/intmath.h
blob: 5311a7d52b17b692edea2965fb8ab73eee1ed986 (plain)
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
/*
 * Copyright (c) 2010 Mans Rullgard <mans@mansr.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
 */

#ifndef AVUTIL_ARM_INTMATH_H
#define AVUTIL_ARM_INTMATH_H

#include <stdint.h>

#include "config.h"
#include "libavutil/attributes.h"

#if HAVE_INLINE_ASM

#if HAVE_ARMV6_INLINE

#define av_clip_uint8 av_clip_uint8_arm
static av_always_inline av_const int av_clip_uint8_arm(int a)
{
    int x;
    __asm__ ("usat %0, #8,  %1" : "=r"(x) : "r"(a));
    return x;
}

#define av_clip_int8 av_clip_int8_arm
static av_always_inline av_const int av_clip_int8_arm(int a)
{
    int x;
    __asm__ ("ssat %0, #8,  %1" : "=r"(x) : "r"(a));
    return x;
}

#define av_clip_uint16 av_clip_uint16_arm
static av_always_inline av_const int av_clip_uint16_arm(int a)
{
    int x;
    __asm__ ("usat %0, #16, %1" : "=r"(x) : "r"(a));
    return x;
}

#define av_clip_int16 av_clip_int16_arm
static av_always_inline av_const int av_clip_int16_arm(int a)
{
    int x;
    __asm__ ("ssat %0, #16, %1" : "=r"(x) : "r"(a));
    return x;
}

#define av_clip_intp2 av_clip_intp2_arm
static av_always_inline av_const int av_clip_intp2_arm(int a, int p)
{
    unsigned x;
    __asm__ ("ssat %0, %2, %1" : "=r"(x) : "r"(a), "i"(p+1));
    return x;
}

#define av_clip_uintp2 av_clip_uintp2_arm
static av_always_inline av_const unsigned av_clip_uintp2_arm(int a, int p)
{
    unsigned x;
    __asm__ ("usat %0, %2, %1" : "=r"(x) : "r"(a), "i"(p));
    return x;
}

#define av_sat_add32 av_sat_add32_arm
static av_always_inline int av_sat_add32_arm(int a, int b)
{
    int r;
    __asm__ ("qadd %0, %1, %2" : "=r"(r) : "r"(a), "r"(b));
    return r;
}

#define av_sat_dadd32 av_sat_dadd32_arm
static av_always_inline int av_sat_dadd32_arm(int a, int b)
{
    int r;
    __asm__ ("qdadd %0, %1, %2" : "=r"(r) : "r"(a), "r"(b));
    return r;
}

#define av_sat_sub32 av_sat_sub32_arm
static av_always_inline int av_sat_sub32_arm(int a, int b)
{
    int r;
    __asm__ ("qsub %0, %1, %2" : "=r"(r) : "r"(a), "r"(b));
    return r;
}

#define av_sat_dsub32 av_sat_dsub32_arm
static av_always_inline int av_sat_dsub32_arm(int a, int b)
{
    int r;
    __asm__ ("qdsub %0, %1, %2" : "=r"(r) : "r"(a), "r"(b));
    return r;
}

#endif /* HAVE_ARMV6_INLINE */

#if HAVE_ASM_MOD_Q

#define av_clipl_int32 av_clipl_int32_arm
static av_always_inline av_const int32_t av_clipl_int32_arm(int64_t a)
{
    int x, y;
    __asm__ ("adds   %1, %R2, %Q2, lsr #31  \n\t"
             "itet   ne                     \n\t"
             "mvnne  %1, #1<<31             \n\t"
             "moveq  %0, %Q2                \n\t"
             "eorne  %0, %1,  %R2, asr #31  \n\t"
             : "=r"(x), "=&r"(y) : "r"(a) : "cc");
    return x;
}

#endif /* HAVE_ASM_MOD_Q */

#endif /* HAVE_INLINE_ASM */

#endif /* AVUTIL_ARM_INTMATH_H */