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84 lines
3.1 KiB
84 lines
3.1 KiB
/* |
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* Copyright (c) 2000, 2001, 2002 Fabrice Bellard |
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* |
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* This file is part of Libav. |
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* |
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* Libav is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* Libav is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with Libav; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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#ifndef AVUTIL_CPU_H |
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#define AVUTIL_CPU_H |
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#include "version.h" |
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#define AV_CPU_FLAG_FORCE 0x80000000 /* force usage of selected flags (OR) */ |
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/* lower 16 bits - CPU features */ |
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#define AV_CPU_FLAG_MMX 0x0001 ///< standard MMX |
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#define AV_CPU_FLAG_MMXEXT 0x0002 ///< SSE integer functions or AMD MMX ext |
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#if FF_API_CPU_FLAG_MMX2 |
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#define AV_CPU_FLAG_MMX2 0x0002 ///< SSE integer functions or AMD MMX ext |
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#endif |
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#define AV_CPU_FLAG_3DNOW 0x0004 ///< AMD 3DNOW |
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#define AV_CPU_FLAG_SSE 0x0008 ///< SSE functions |
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#define AV_CPU_FLAG_SSE2 0x0010 ///< PIV SSE2 functions |
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#define AV_CPU_FLAG_SSE2SLOW 0x40000000 ///< SSE2 supported, but usually not faster |
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#define AV_CPU_FLAG_3DNOWEXT 0x0020 ///< AMD 3DNowExt |
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#define AV_CPU_FLAG_SSE3 0x0040 ///< Prescott SSE3 functions |
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#define AV_CPU_FLAG_SSE3SLOW 0x20000000 ///< SSE3 supported, but usually not faster |
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#define AV_CPU_FLAG_SSSE3 0x0080 ///< Conroe SSSE3 functions |
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#define AV_CPU_FLAG_ATOM 0x10000000 ///< Atom processor, some SSSE3 instructions are slower |
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#define AV_CPU_FLAG_SSE4 0x0100 ///< Penryn SSE4.1 functions |
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#define AV_CPU_FLAG_SSE42 0x0200 ///< Nehalem SSE4.2 functions |
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#define AV_CPU_FLAG_AVX 0x4000 ///< AVX functions: requires OS support even if YMM registers aren't used |
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#define AV_CPU_FLAG_XOP 0x0400 ///< Bulldozer XOP functions |
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#define AV_CPU_FLAG_FMA4 0x0800 ///< Bulldozer FMA4 functions |
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#define AV_CPU_FLAG_CMOV 0x1000 ///< i686 cmov |
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#define AV_CPU_FLAG_ALTIVEC 0x0001 ///< standard |
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#define AV_CPU_FLAG_ARMV5TE (1 << 0) |
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#define AV_CPU_FLAG_ARMV6 (1 << 1) |
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#define AV_CPU_FLAG_ARMV6T2 (1 << 2) |
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#define AV_CPU_FLAG_VFP (1 << 3) |
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#define AV_CPU_FLAG_VFPV3 (1 << 4) |
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#define AV_CPU_FLAG_NEON (1 << 5) |
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/** |
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* Return the flags which specify extensions supported by the CPU. |
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*/ |
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int av_get_cpu_flags(void); |
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/** |
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* Set a mask on flags returned by av_get_cpu_flags(). |
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* This function is mainly useful for testing. |
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* |
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* @warning this function is not thread safe. |
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*/ |
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void av_set_cpu_flags_mask(int mask); |
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/** |
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* Parse CPU flags from a string. |
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* |
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* @return a combination of AV_CPU_* flags, negative on error. |
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*/ |
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int av_parse_cpu_flags(const char *s); |
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/** |
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* @return the number of logical CPU cores present. |
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*/ |
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int av_cpu_count(void); |
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#endif /* AVUTIL_CPU_H */
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