/*****************************************************************************
* vlc_cpu.h: CPU capabilities
*****************************************************************************
- * Copyright (C) 1998-2009 the VideoLAN team
+ * Copyright (C) 1998-2009 VLC authors and VideoLAN
*
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation; either version 2.1 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Lesser General Public License for more details.
*
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
*****************************************************************************/
/**
* \file
- * This file provides CPU-specific optimization flags.
+ * This file provides CPU features detection.
*/
#ifndef VLC_CPU_H
# define VLC_CPU_H 1
+VLC_API unsigned vlc_CPU(void);
+
# if defined (__i386__) || defined (__x86_64__)
-# define CPU_CAPABILITY_MMX (1<<3)
-# define CPU_CAPABILITY_3DNOW (1<<4)
-# define CPU_CAPABILITY_MMXEXT (1<<5)
-# define CPU_CAPABILITY_SSE (1<<6)
-# define CPU_CAPABILITY_SSE2 (1<<7)
-# define CPU_CAPABILITY_SSE3 (1<<8)
-# define CPU_CAPABILITY_SSSE3 (1<<9)
-# define CPU_CAPABILITY_SSE4_1 (1<<10)
-# define CPU_CAPABILITY_SSE4_2 (1<<11)
-# define CPU_CAPABILITY_SSE4A (1<<12)
+# define HAVE_FPU 1
+# define VLC_CPU_MMX 0x00000008
+# define VLC_CPU_3dNOW 0x00000010
+# define VLC_CPU_MMXEXT 0x00000020
+# define VLC_CPU_SSE 0x00000040
+# define VLC_CPU_SSE2 0x00000080
+# define VLC_CPU_SSE3 0x00000100
+# define VLC_CPU_SSSE3 0x00000200
+# define VLC_CPU_SSE4_1 0x00000400
+# define VLC_CPU_SSE4_2 0x00000800
+# define VLC_CPU_SSE4A 0x00001000
+# define VLC_CPU_AVX 0x00002000
+# define VLC_CPU_AVX2 0x00004000
+# define VLC_CPU_XOP 0x00008000
+# define VLC_CPU_FMA4 0x00010000
+
+# if defined (__MMX__)
+# define vlc_CPU_MMX() (1)
+# define VLC_MMX
# else
-# define CPU_CAPABILITY_MMX (0)
-# define CPU_CAPABILITY_3DNOW (0)
-# define CPU_CAPABILITY_MMXEXT (0)
-# define CPU_CAPABILITY_SSE (0)
-# define CPU_CAPABILITY_SSE2 (0)
-# define CPU_CAPABILITY_SSE3 (0)
-# define CPU_CAPABILITY_SSSE3 (0)
-# define CPU_CAPABILITY_SSE4_1 (0)
-# define CPU_CAPABILITY_SSE4_2 (0)
-# define CPU_CAPABILITY_SSE4A (0)
+# define vlc_CPU_MMX() ((vlc_CPU() & VLC_CPU_MMX) != 0)
+# if VLC_GCC_VERSION(4, 4) || defined(__clang__)
+# define VLC_MMX __attribute__ ((__target__ ("mmx")))
+# else
+# define VLC_MMX VLC_MMX_is_not_implemented_on_this_compiler
+# endif
# endif
-# if defined (__ppc__) || defined (__ppc64__) || defined (__powerpc__)
-# define CPU_CAPABILITY_ALTIVEC (1<<16)
+# if defined (__SSE__)
+# define vlc_CPU_MMXEXT() (1)
+# define vlc_CPU_SSE() (1)
+# define VLC_SSE
# else
-# define CPU_CAPABILITY_ALTIVEC (0)
+# define vlc_CPU_MMXEXT() ((vlc_CPU() & VLC_CPU_MMXEXT) != 0)
+# define vlc_CPU_SSE() ((vlc_CPU() & VLC_CPU_SSE) != 0)
+# if VLC_GCC_VERSION(4, 4) || defined(__clang__)
+# define VLC_SSE __attribute__ ((__target__ ("sse")))
+# else
+# define VLC_SSE VLC_SSE_is_not_implemented_on_this_compiler
+# endif
# endif
-# if defined (__arm__)
-# define CPU_CAPABILITY_NEON (1<<24)
+# ifdef __SSE2__
+# define vlc_CPU_SSE2() (1)
# else
-# define CPU_CAPABILITY_NEON (0)
+# define vlc_CPU_SSE2() ((vlc_CPU() & VLC_CPU_SSE2) != 0)
# endif
-VLC_API unsigned vlc_CPU( void );
-VLC_API unsigned vlc_GetCPUCount( void );
+# ifdef __SSE3__
+# define vlc_CPU_SSE3() (1)
+# else
+# define vlc_CPU_SSE3() ((vlc_CPU() & VLC_CPU_SSE3) != 0)
+# endif
-/** Are floating point operations fast?
- * If this bit is not set, you should try to use fixed-point instead.
- */
-# if defined (__i386__) || defined (__x86_64__)
-# define HAVE_FPU 1
+# ifdef __SSSE3__
+# define vlc_CPU_SSSE3() (1)
+# else
+# define vlc_CPU_SSSE3() ((vlc_CPU() & VLC_CPU_SSSE3) != 0)
+# endif
+
+# ifdef __SSE4_1__
+# define vlc_CPU_SSE4_1() (1)
+# else
+# define vlc_CPU_SSE4_1() ((vlc_CPU() & VLC_CPU_SSE4_1) != 0)
+# endif
+
+# ifdef __SSE4_2__
+# define vlc_CPU_SSE4_2() (1)
+# else
+# define vlc_CPU_SSE4_2() ((vlc_CPU() & VLC_CPU_SSE4_2) != 0)
+# endif
+
+# ifdef __SSE4A__
+# define vlc_CPU_SSE4A() (1)
+# else
+# define vlc_CPU_SSE4A() ((vlc_CPU() & VLC_CPU_SSE4A) != 0)
+# endif
+
+# ifdef __AVX__
+# define vlc_CPU_AVX() (1)
+# else
+# define vlc_CPU_AVX() ((vlc_CPU() & VLC_CPU_AVX) != 0)
+# endif
-# elif defined (__powerpc__) || defined (__ppc__) || defined (__ppc64__)
+# ifdef __AVX2__
+# define vlc_CPU_AVX2() (1)
+# else
+# define vlc_CPU_AVX2() ((vlc_CPU() & VLC_CPU_AVX2) != 0)
+# endif
+
+# ifdef __3dNOW__
+# define vlc_CPU_3dNOW() (1)
+# else
+# define vlc_CPU_3dNOW() ((vlc_CPU() & VLC_CPU_3dNOW) != 0)
+# endif
+
+# ifdef __XOP__
+# define vlc_CPU_XOP() (1)
+# else
+# define vlc_CPU_XOP() ((vlc_CPU() & VLC_CPU_XOP) != 0)
+# endif
+
+# ifdef __FMA4__
+# define vlc_CPU_FMA4() (1)
+# else
+# define vlc_CPU_FMA4() ((vlc_CPU() & VLC_CPU_FMA4) != 0)
+# endif
+
+# elif defined (__ppc__) || defined (__ppc64__) || defined (__powerpc__)
# define HAVE_FPU 1
+# define VLC_CPU_ALTIVEC 2
+
+# ifdef ALTIVEC
+# define vlc_CPU_ALTIVEC() (1)
+# else
+# define vlc_CPU_ALTIVEC() ((vlc_CPU() & VLC_CPU_ALTIVEC) != 0)
+# endif
# elif defined (__arm__)
-# define HAVE_FPU 0 /* revisit later? */
+# if defined (__VFP_FP__) && !defined (__SOFTFP__)
+# define HAVE_FPU 1
+# else
+# define HAVE_FPU 0
+# endif
+# define VLC_CPU_ARMv6 4
+# define VLC_CPU_ARM_NEON 2
+
+# if defined (__ARM_ARCH_7A__)
+# define VLC_CPU_ARM_ARCH 7
+# elif defined (__ARM_ARCH_6__) || defined (__ARM_ARCH_6T2__)
+# define VLC_CPU_ARM_ARCH 6
+# else
+# define VLC_CPU_ARM_ARCH 4
+# endif
+
+# if (VLC_CPU_ARM_ARCH >= 6)
+# define vlc_CPU_ARMv6() (1)
+# else
+# define vlc_CPU_ARMv6() ((vlc_CPU() & VLC_CPU_ARMv6) != 0)
+# endif
+
+# ifdef __ARM_NEON__
+# define vlc_CPU_ARM_NEON() (1)
+# else
+# define vlc_CPU_ARM_NEON() ((vlc_CPU() & VLC_CPU_ARM_NEON) != 0)
+# endif
+
+# elif defined (__aarch64__)
+# define HAVE_FPU 1
# elif defined (__sparc__)
# define HAVE_FPU 1
+# elif defined (__mips_hard_float)
+# define HAVE_FPU 1
+
# else
+/**
+ * Are single precision floating point operations "fast"?
+ * If this preprocessor constant is zero, floating point should be avoided
+ * (especially relevant for audio codecs).
+ */
# define HAVE_FPU 0
# endif
-typedef void *(*vlc_memcpy_t) (void *tgt, const void *src, size_t n);
-
-VLC_API void vlc_fastmem_register(vlc_memcpy_t cpy);
-
#endif /* !VLC_CPU_H */
-
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