cpu.h
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1 /*
2  * Copyright (c) 2000, 2001, 2002 Fabrice Bellard
3  *
4  * This file is part of Libav.
5  *
6  * Libav is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2.1 of the License, or (at your option) any later version.
10  *
11  * Libav is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with Libav; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19  */
20 
21 #ifndef AVUTIL_CPU_H
22 #define AVUTIL_CPU_H
23 
24 #include "version.h"
25 
26 #define AV_CPU_FLAG_FORCE 0x80000000 /* force usage of selected flags (OR) */
27 
28  /* lower 16 bits - CPU features */
29 #define AV_CPU_FLAG_MMX 0x0001
30 #define AV_CPU_FLAG_MMXEXT 0x0002
31 #if FF_API_CPU_FLAG_MMX2
32 #define AV_CPU_FLAG_MMX2 0x0002
33 #endif
34 #define AV_CPU_FLAG_3DNOW 0x0004
35 #define AV_CPU_FLAG_SSE 0x0008
36 #define AV_CPU_FLAG_SSE2 0x0010
37 #define AV_CPU_FLAG_SSE2SLOW 0x40000000
38 #define AV_CPU_FLAG_3DNOWEXT 0x0020
39 #define AV_CPU_FLAG_SSE3 0x0040
40 #define AV_CPU_FLAG_SSE3SLOW 0x20000000
41 #define AV_CPU_FLAG_SSSE3 0x0080
42 #define AV_CPU_FLAG_ATOM 0x10000000
43 #define AV_CPU_FLAG_SSE4 0x0100
44 #define AV_CPU_FLAG_SSE42 0x0200
45 #define AV_CPU_FLAG_AVX 0x4000
46 #define AV_CPU_FLAG_XOP 0x0400
47 #define AV_CPU_FLAG_FMA4 0x0800
48 #define AV_CPU_FLAG_CMOV 0x1000
49 
50 #define AV_CPU_FLAG_ALTIVEC 0x0001
51 
52 #define AV_CPU_FLAG_ARMV5TE (1 << 0)
53 #define AV_CPU_FLAG_ARMV6 (1 << 1)
54 #define AV_CPU_FLAG_ARMV6T2 (1 << 2)
55 #define AV_CPU_FLAG_VFP (1 << 3)
56 #define AV_CPU_FLAG_VFPV3 (1 << 4)
57 #define AV_CPU_FLAG_NEON (1 << 5)
58 
62 int av_get_cpu_flags(void);
63 
70 void av_set_cpu_flags_mask(int mask);
71 
77 int av_parse_cpu_flags(const char *s);
78 
79 /* The following CPU-specific functions shall not be called directly. */
80 int ff_get_cpu_flags_arm(void);
81 int ff_get_cpu_flags_ppc(void);
82 int ff_get_cpu_flags_x86(void);
83 
84 #endif /* AVUTIL_CPU_H */
void av_set_cpu_flags_mask(int mask)
Set a mask on flags returned by av_get_cpu_flags().
Definition: cpu.c:42
static const uint16_t mask[17]
Definition: lzw.c:38
Libavutil version macros.
int ff_get_cpu_flags_x86(void)
Definition: cpu.c:89
int ff_get_cpu_flags_arm(void)
Definition: cpu.c:136
int av_parse_cpu_flags(const char *s)
Parse CPU flags from a string.
Definition: cpu.c:48
int ff_get_cpu_flags_ppc(void)
This function MAY rely on signal() or fork() in order to make sure AltiVec is present.
Definition: cpu.c:38
int av_get_cpu_flags(void)
Return the flags which specify extensions supported by the CPU.
Definition: cpu.c:25