cpu.h (2560B)
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 #define AV_CPU_FLAG_FORCE 0x80000000 /* force usage of selected flags (OR) */ 25 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_XOP 0x0400 ///< Bulldozer XOP functions 42 #define AV_CPU_FLAG_FMA4 0x0800 ///< Bulldozer FMA4 functions 43 #define AV_CPU_FLAG_IWMMXT 0x0100 ///< XScale IWMMXT 44 #define AV_CPU_FLAG_ALTIVEC 0x0001 ///< standard 45 46 /** 47 * Return the flags which specify extensions supported by the CPU. 48 */ 49 int av_get_cpu_flags(void); 50 51 /* The following CPU-specific functions shall not be called directly. */ 52 int ff_get_cpu_flags_arm(void); 53 int ff_get_cpu_flags_ppc(void); 54 int ff_get_cpu_flags_x86(void); 55 56 #endif /* AVUTIL_CPU_H */