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1 /* |
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2 * Copyright (c) 2000, 2001, 2002 Fabrice Bellard |
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3 * |
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4 * This file is part of Libav. |
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5 * |
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6 * Libav is free software; you can redistribute it and/or |
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7 * modify it under the terms of the GNU Lesser General Public |
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8 * License as published by the Free Software Foundation; either |
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9 * version 2.1 of the License, or (at your option) any later version. |
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10 * |
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11 * Libav is distributed in the hope that it will be useful, |
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12 * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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14 * Lesser General Public License for more details. |
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15 * |
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16 * You should have received a copy of the GNU Lesser General Public |
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17 * License along with Libav; if not, write to the Free Software |
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18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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19 */ |
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20 |
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21 #ifndef AVUTIL_CPU_H |
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22 #define AVUTIL_CPU_H |
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23 |
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24 #include "version.h" |
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25 |
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26 #define AV_CPU_FLAG_FORCE 0x80000000 /* force usage of selected flags (OR) */ |
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27 |
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28 /* lower 16 bits - CPU features */ |
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29 #define AV_CPU_FLAG_MMX 0x0001 ///< standard MMX |
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30 #define AV_CPU_FLAG_MMXEXT 0x0002 ///< SSE integer functions or AMD MMX ext |
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31 #if LIBAVUTIL_VERSION_MAJOR < 52 |
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32 #define AV_CPU_FLAG_MMX2 0x0002 ///< SSE integer functions or AMD MMX ext |
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33 #endif |
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34 #define AV_CPU_FLAG_3DNOW 0x0004 ///< AMD 3DNOW |
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35 #define AV_CPU_FLAG_SSE 0x0008 ///< SSE functions |
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36 #define AV_CPU_FLAG_SSE2 0x0010 ///< PIV SSE2 functions |
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37 #define AV_CPU_FLAG_SSE2SLOW 0x40000000 ///< SSE2 supported, but usually not faster |
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38 #define AV_CPU_FLAG_3DNOWEXT 0x0020 ///< AMD 3DNowExt |
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39 #define AV_CPU_FLAG_SSE3 0x0040 ///< Prescott SSE3 functions |
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40 #define AV_CPU_FLAG_SSE3SLOW 0x20000000 ///< SSE3 supported, but usually not faster |
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41 #define AV_CPU_FLAG_SSSE3 0x0080 ///< Conroe SSSE3 functions |
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42 #define AV_CPU_FLAG_ATOM 0x10000000 ///< Atom processor, some SSSE3 instructions are slower |
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43 #define AV_CPU_FLAG_SSE4 0x0100 ///< Penryn SSE4.1 functions |
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44 #define AV_CPU_FLAG_SSE42 0x0200 ///< Nehalem SSE4.2 functions |
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45 #define AV_CPU_FLAG_AVX 0x4000 ///< AVX functions: requires OS support even if YMM registers aren't used |
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46 #define AV_CPU_FLAG_XOP 0x0400 ///< Bulldozer XOP functions |
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47 #define AV_CPU_FLAG_FMA4 0x0800 ///< Bulldozer FMA4 functions |
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48 #define AV_CPU_FLAG_CMOV 0x1000 ///< i686 cmov |
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49 |
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50 #define AV_CPU_FLAG_ALTIVEC 0x0001 ///< standard |
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51 |
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52 #define AV_CPU_FLAG_ARMV5TE (1 << 0) |
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53 #define AV_CPU_FLAG_ARMV6 (1 << 1) |
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54 #define AV_CPU_FLAG_ARMV6T2 (1 << 2) |
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55 #define AV_CPU_FLAG_VFP (1 << 3) |
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56 #define AV_CPU_FLAG_VFPV3 (1 << 4) |
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57 #define AV_CPU_FLAG_NEON (1 << 5) |
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58 |
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59 /** |
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60 * Return the flags which specify extensions supported by the CPU. |
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61 */ |
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62 int av_get_cpu_flags(void); |
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63 |
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64 /** |
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65 * Set a mask on flags returned by av_get_cpu_flags(). |
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66 * This function is mainly useful for testing. |
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67 * |
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68 * @warning this function is not thread safe. |
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69 */ |
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70 void av_set_cpu_flags_mask(int mask); |
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71 |
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72 /** |
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73 * Parse CPU flags from a string. |
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74 * |
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75 * @return a combination of AV_CPU_* flags, negative on error. |
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76 */ |
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77 int av_parse_cpu_flags(const char *s); |
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78 |
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79 /* The following CPU-specific functions shall not be called directly. */ |
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80 int ff_get_cpu_flags_arm(void); |
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81 int ff_get_cpu_flags_ppc(void); |
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82 int ff_get_cpu_flags_x86(void); |
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83 |
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84 #endif /* AVUTIL_CPU_H */ |