mirror of https://code.videolan.org/videolan/vlc
193 lines
4.9 KiB
C
193 lines
4.9 KiB
C
/*****************************************************************************
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* vlc_cpu.h: CPU capabilities
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*****************************************************************************
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* Copyright (C) 1998-2009 VLC authors and VideoLAN
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation; either version 2.1 of the License, or
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* (at your option) any later version.
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*
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* This program 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
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* GNU 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 License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
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*****************************************************************************/
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/**
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* \file
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* This file provides CPU features detection.
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*/
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#ifndef VLC_CPU_H
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# define VLC_CPU_H 1
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VLC_API unsigned vlc_CPU(void);
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# if defined (__i386__) || defined (__x86_64__)
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# define HAVE_FPU 1
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# define VLC_CPU_MMX 0x00000008
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# define VLC_CPU_3dNOW 0x00000010
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# define VLC_CPU_MMXEXT 0x00000020
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# define VLC_CPU_SSE 0x00000040
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# define VLC_CPU_SSE2 0x00000080
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# define VLC_CPU_SSE3 0x00000100
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# define VLC_CPU_SSSE3 0x00000200
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# define VLC_CPU_SSE4_1 0x00000400
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# define VLC_CPU_SSE4_2 0x00000800
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# define VLC_CPU_SSE4A 0x00001000
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# define VLC_CPU_AVX 0x00002000
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# define VLC_CPU_AVX2 0x00004000
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# define VLC_CPU_XOP 0x00008000
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# define VLC_CPU_FMA4 0x00010000
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# if defined (__MMX__)
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# define vlc_CPU_MMX() (1)
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# define VLC_MMX
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# else
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# define vlc_CPU_MMX() ((vlc_CPU() & VLC_CPU_MMX) != 0)
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# define VLC_MMX __attribute__ ((__target__ ("mmx")))
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# endif
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# if defined (__SSE__)
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# define vlc_CPU_MMXEXT() (1)
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# define vlc_CPU_SSE() (1)
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# define VLC_SSE
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# else
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# define vlc_CPU_MMXEXT() ((vlc_CPU() & VLC_CPU_MMXEXT) != 0)
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# define vlc_CPU_SSE() ((vlc_CPU() & VLC_CPU_SSE) != 0)
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# define VLC_SSE __attribute__ ((__target__ ("sse")))
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# endif
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# ifdef __SSE2__
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# define vlc_CPU_SSE2() (1)
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# else
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# define vlc_CPU_SSE2() ((vlc_CPU() & VLC_CPU_SSE2) != 0)
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# endif
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# ifdef __SSE3__
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# define vlc_CPU_SSE3() (1)
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# else
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# define vlc_CPU_SSE3() ((vlc_CPU() & VLC_CPU_SSE3) != 0)
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# endif
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# ifdef __SSSE3__
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# define vlc_CPU_SSSE3() (1)
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# else
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# define vlc_CPU_SSSE3() ((vlc_CPU() & VLC_CPU_SSSE3) != 0)
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# endif
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# ifdef __SSE4_1__
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# define vlc_CPU_SSE4_1() (1)
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# else
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# define vlc_CPU_SSE4_1() ((vlc_CPU() & VLC_CPU_SSE4_1) != 0)
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# endif
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# ifdef __SSE4_2__
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# define vlc_CPU_SSE4_2() (1)
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# else
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# define vlc_CPU_SSE4_2() ((vlc_CPU() & VLC_CPU_SSE4_2) != 0)
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# endif
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# ifdef __SSE4A__
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# define vlc_CPU_SSE4A() (1)
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# else
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# define vlc_CPU_SSE4A() ((vlc_CPU() & VLC_CPU_SSE4A) != 0)
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# endif
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# ifdef __AVX__
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# define vlc_CPU_AVX() (1)
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# else
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# define vlc_CPU_AVX() ((vlc_CPU() & VLC_CPU_AVX) != 0)
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# endif
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# ifdef __AVX2__
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# define vlc_CPU_AVX2() (1)
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# else
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# define vlc_CPU_AVX2() ((vlc_CPU() & VLC_CPU_AVX2) != 0)
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# endif
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# ifdef __3dNOW__
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# define vlc_CPU_3dNOW() (1)
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# else
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# define vlc_CPU_3dNOW() ((vlc_CPU() & VLC_CPU_3dNOW) != 0)
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# endif
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# ifdef __XOP__
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# define vlc_CPU_XOP() (1)
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# else
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# define vlc_CPU_XOP() ((vlc_CPU() & VLC_CPU_XOP) != 0)
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# endif
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# ifdef __FMA4__
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# define vlc_CPU_FMA4() (1)
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# else
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# define vlc_CPU_FMA4() ((vlc_CPU() & VLC_CPU_FMA4) != 0)
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# endif
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# elif defined (__ppc__) || defined (__ppc64__) || defined (__powerpc__)
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# define HAVE_FPU 1
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# define VLC_CPU_ALTIVEC 2
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# ifdef ALTIVEC
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# define vlc_CPU_ALTIVEC() (1)
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# else
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# define vlc_CPU_ALTIVEC() ((vlc_CPU() & VLC_CPU_ALTIVEC) != 0)
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# endif
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# elif defined (__arm__)
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# if defined (__VFP_FP__) && !defined (__SOFTFP__)
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# define HAVE_FPU 1
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# else
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# define HAVE_FPU 0
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# endif
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# define VLC_CPU_ARMv6 4
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# define VLC_CPU_ARM_NEON 2
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# if defined (__ARM_ARCH_7A__)
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# define VLC_CPU_ARM_ARCH 7
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# elif defined (__ARM_ARCH_6__) || defined (__ARM_ARCH_6T2__)
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# define VLC_CPU_ARM_ARCH 6
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# else
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# define VLC_CPU_ARM_ARCH 4
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# endif
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# if (VLC_CPU_ARM_ARCH >= 6)
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# define vlc_CPU_ARMv6() (1)
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# else
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# define vlc_CPU_ARMv6() ((vlc_CPU() & VLC_CPU_ARMv6) != 0)
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# endif
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# ifdef __ARM_NEON__
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# define vlc_CPU_ARM_NEON() (1)
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# else
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# define vlc_CPU_ARM_NEON() ((vlc_CPU() & VLC_CPU_ARM_NEON) != 0)
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# endif
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# elif defined (__aarch64__)
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# define HAVE_FPU 1
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// NEON is mandatory for general purpose ARMv8-a CPUs
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# define vlc_CPU_ARM64_NEON() (1)
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# elif defined (__sparc__)
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# define HAVE_FPU 1
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# elif defined (__mips_hard_float)
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# define HAVE_FPU 1
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# else
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/**
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* Are single precision floating point operations "fast"?
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* If this preprocessor constant is zero, floating point should be avoided
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* (especially relevant for audio codecs).
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*/
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# define HAVE_FPU 0
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# endif
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#endif /* !VLC_CPU_H */
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