cpu.h 2.5 KB

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  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. #ifndef AVUTIL_CPU_H
  21. #define AVUTIL_CPU_H
  22. #define AV_CPU_FLAG_FORCE 0x80000000 /* force usage of selected flags (OR) */
  23. /* lower 16 bits - CPU features */
  24. #define AV_CPU_FLAG_MMX 0x0001 ///< standard MMX
  25. #define AV_CPU_FLAG_MMX2 0x0002 ///< SSE integer functions or AMD MMX ext
  26. #define AV_CPU_FLAG_3DNOW 0x0004 ///< AMD 3DNOW
  27. #define AV_CPU_FLAG_SSE 0x0008 ///< SSE functions
  28. #define AV_CPU_FLAG_SSE2 0x0010 ///< PIV SSE2 functions
  29. #define AV_CPU_FLAG_SSE2SLOW 0x40000000 ///< SSE2 supported, but usually not faster
  30. #define AV_CPU_FLAG_3DNOWEXT 0x0020 ///< AMD 3DNowExt
  31. #define AV_CPU_FLAG_SSE3 0x0040 ///< Prescott SSE3 functions
  32. #define AV_CPU_FLAG_SSE3SLOW 0x20000000 ///< SSE3 supported, but usually not faster
  33. #define AV_CPU_FLAG_SSSE3 0x0080 ///< Conroe SSSE3 functions
  34. #define AV_CPU_FLAG_ATOM 0x10000000 ///< Atom processor, some SSSE3 instructions are slower
  35. #define AV_CPU_FLAG_SSE4 0x0100 ///< Penryn SSE4.1 functions
  36. #define AV_CPU_FLAG_SSE42 0x0200 ///< Nehalem SSE4.2 functions
  37. #define AV_CPU_FLAG_AVX 0x4000 ///< AVX functions: requires OS support even if YMM registers aren't used
  38. #define AV_CPU_FLAG_IWMMXT 0x0100 ///< XScale IWMMXT
  39. #define AV_CPU_FLAG_ALTIVEC 0x0001 ///< standard
  40. /**
  41. * Return the flags which specify extensions supported by the CPU.
  42. */
  43. int av_get_cpu_flags(void);
  44. /**
  45. * Disables cpu detection and forces the specified flags.
  46. */
  47. void av_force_cpu_flags(int flags);
  48. /* The following CPU-specific functions shall not be called directly. */
  49. int ff_get_cpu_flags_arm(void);
  50. int ff_get_cpu_flags_ppc(void);
  51. int ff_get_cpu_flags_x86(void);
  52. #endif /* AVUTIL_CPU_H */