2 * Copyright (c) 2000, 2001, 2002 Fabrice Bellard
4 * This file is part of FFmpeg.
6 * FFmpeg 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.
11 * FFmpeg 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.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with FFmpeg; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
24 #define AV_CPU_FLAG_FORCE 0x80000000 /* force usage of selected flags (OR) */
26 /* lower 16 bits - CPU features */
27 #define AV_CPU_FLAG_MMX 0x0001 ///< standard MMX
28 #define AV_CPU_FLAG_MMX2 0x0002 ///< SSE integer functions or AMD MMX ext
29 #define AV_CPU_FLAG_3DNOW 0x0004 ///< AMD 3DNOW
30 #define AV_CPU_FLAG_SSE 0x0008 ///< SSE functions
31 #define AV_CPU_FLAG_SSE2 0x0010 ///< PIV SSE2 functions
32 #define AV_CPU_FLAG_SSE2SLOW 0x40000000 ///< SSE2 supported, but usually not faster
33 #define AV_CPU_FLAG_3DNOWEXT 0x0020 ///< AMD 3DNowExt
34 #define AV_CPU_FLAG_SSE3 0x0040 ///< Prescott SSE3 functions
35 #define AV_CPU_FLAG_SSE3SLOW 0x20000000 ///< SSE3 supported, but usually not faster
36 #define AV_CPU_FLAG_SSSE3 0x0080 ///< Conroe SSSE3 functions
37 #define AV_CPU_FLAG_ATOM 0x10000000 ///< Atom processor, some SSSE3 instructions are slower
38 #define AV_CPU_FLAG_SSE4 0x0100 ///< Penryn SSE4.1 functions
39 #define AV_CPU_FLAG_SSE42 0x0200 ///< Nehalem SSE4.2 functions
40 #define AV_CPU_FLAG_AVX 0x4000 ///< AVX functions: requires OS support even if YMM registers aren't used
41 #define AV_CPU_FLAG_IWMMXT 0x0100 ///< XScale IWMMXT
42 #define AV_CPU_FLAG_ALTIVEC 0x0001 ///< standard
45 * Return the flags which specify extensions supported by the CPU.
47 int av_get_cpu_flags(void);
49 /* The following CPU-specific functions shall not be called directly. */
50 int ff_get_cpu_flags_arm(void);
51 int ff_get_cpu_flags_ppc(void);
52 int ff_get_cpu_flags_x86(void);
54 #endif /* AVUTIL_CPU_H */