Go to most recent revision | Details | Last modification | View Log | RSS feed
| Rev | Author | Line No. | Line |
|---|---|---|---|
| 4349 | Serge | 1 | /* |
| 2 | * Copyright (c) 2000, 2001, 2002 Fabrice Bellard |
||
| 3 | * |
||
| 4 | * This file is part of FFmpeg. |
||
| 5 | * |
||
| 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. |
||
| 10 | * |
||
| 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. |
||
| 15 | * |
||
| 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 |
||
| 19 | */ |
||
| 20 | |||
| 21 | #ifndef AVUTIL_CPU_H |
||
| 22 | #define AVUTIL_CPU_H |
||
| 23 | |||
| 24 | #include "attributes.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 ///< standard MMX |
||
| 30 | #define AV_CPU_FLAG_MMXEXT 0x0002 ///< SSE integer functions or AMD MMX ext |
||
| 31 | #define AV_CPU_FLAG_MMX2 0x0002 ///< SSE integer functions or AMD MMX ext |
||
| 32 | #define AV_CPU_FLAG_3DNOW 0x0004 ///< AMD 3DNOW |
||
| 33 | #define AV_CPU_FLAG_SSE 0x0008 ///< SSE functions |
||
| 34 | #define AV_CPU_FLAG_SSE2 0x0010 ///< PIV SSE2 functions |
||
| 35 | #define AV_CPU_FLAG_SSE2SLOW 0x40000000 ///< SSE2 supported, but usually not faster |
||
| 36 | ///< than regular MMX/SSE (e.g. Core1) |
||
| 37 | #define AV_CPU_FLAG_3DNOWEXT 0x0020 ///< AMD 3DNowExt |
||
| 38 | #define AV_CPU_FLAG_SSE3 0x0040 ///< Prescott SSE3 functions |
||
| 39 | #define AV_CPU_FLAG_SSE3SLOW 0x20000000 ///< SSE3 supported, but usually not faster |
||
| 40 | ///< than regular MMX/SSE (e.g. Core1) |
||
| 41 | #define AV_CPU_FLAG_SSSE3 0x0080 ///< Conroe SSSE3 functions |
||
| 42 | #define AV_CPU_FLAG_ATOM 0x10000000 ///< Atom processor, some SSSE3 instructions are slower |
||
| 43 | #define AV_CPU_FLAG_SSE4 0x0100 ///< Penryn SSE4.1 functions |
||
| 44 | #define AV_CPU_FLAG_SSE42 0x0200 ///< Nehalem SSE4.2 functions |
||
| 45 | #define AV_CPU_FLAG_AVX 0x4000 ///< AVX functions: requires OS support even if YMM registers aren't used |
||
| 46 | #define AV_CPU_FLAG_XOP 0x0400 ///< Bulldozer XOP functions |
||
| 47 | #define AV_CPU_FLAG_FMA4 0x0800 ///< Bulldozer FMA4 functions |
||
| 48 | // #if LIBAVUTIL_VERSION_MAJOR <52 |
||
| 49 | #define AV_CPU_FLAG_CMOV 0x1001000 ///< supports cmov instruction |
||
| 50 | // #else |
||
| 51 | // #define AV_CPU_FLAG_CMOV 0x1000 ///< supports cmov instruction |
||
| 52 | // #endif |
||
| 53 | #define AV_CPU_FLAG_AVX2 0x8000 ///< AVX2 functions: requires OS support even if YMM registers aren't used |
||
| 54 | |||
| 55 | #define AV_CPU_FLAG_ALTIVEC 0x0001 ///< standard |
||
| 56 | |||
| 57 | #define AV_CPU_FLAG_ARMV5TE (1 << 0) |
||
| 58 | #define AV_CPU_FLAG_ARMV6 (1 << 1) |
||
| 59 | #define AV_CPU_FLAG_ARMV6T2 (1 << 2) |
||
| 60 | #define AV_CPU_FLAG_VFP (1 << 3) |
||
| 61 | #define AV_CPU_FLAG_VFPV3 (1 << 4) |
||
| 62 | #define AV_CPU_FLAG_NEON (1 << 5) |
||
| 63 | |||
| 64 | /** |
||
| 65 | * Return the flags which specify extensions supported by the CPU. |
||
| 66 | * The returned value is affected by av_force_cpu_flags() if that was used |
||
| 67 | * before. So av_get_cpu_flags() can easily be used in a application to |
||
| 68 | * detect the enabled cpu flags. |
||
| 69 | */ |
||
| 70 | int av_get_cpu_flags(void); |
||
| 71 | |||
| 72 | /** |
||
| 73 | * Disables cpu detection and forces the specified flags. |
||
| 74 | * -1 is a special case that disables forcing of specific flags. |
||
| 75 | */ |
||
| 76 | void av_force_cpu_flags(int flags); |
||
| 77 | |||
| 78 | /** |
||
| 79 | * Set a mask on flags returned by av_get_cpu_flags(). |
||
| 80 | * This function is mainly useful for testing. |
||
| 81 | * Please use av_force_cpu_flags() and av_get_cpu_flags() instead which are more flexible |
||
| 82 | * |
||
| 83 | * @warning this function is not thread safe. |
||
| 84 | */ |
||
| 85 | attribute_deprecated void av_set_cpu_flags_mask(int mask); |
||
| 86 | |||
| 87 | /** |
||
| 88 | * Parse CPU flags from a string. |
||
| 89 | * |
||
| 90 | * The returned flags contain the specified flags as well as related unspecified flags. |
||
| 91 | * |
||
| 92 | * This function exists only for compatibility with libav. |
||
| 93 | * Please use av_parse_cpu_caps() when possible. |
||
| 94 | * @return a combination of AV_CPU_* flags, negative on error. |
||
| 95 | */ |
||
| 96 | attribute_deprecated |
||
| 97 | int av_parse_cpu_flags(const char *s); |
||
| 98 | |||
| 99 | /** |
||
| 100 | * Parse CPU caps from a string and update the given AV_CPU_* flags based on that. |
||
| 101 | * |
||
| 102 | * @return negative on error. |
||
| 103 | */ |
||
| 104 | int av_parse_cpu_caps(unsigned *flags, const char *s); |
||
| 105 | |||
| 106 | /** |
||
| 107 | * @return the number of logical CPU cores present. |
||
| 108 | */ |
||
| 109 | int av_cpu_count(void); |
||
| 110 | |||
| 111 | #endif /* AVUTIL_CPU_H */ |