libavutil/cpu.h

Go to the documentation of this file.

/*
 * Copyright (c) 2000, 2001, 2002 Fabrice Bellard
 *
 * This file is part of FFmpeg.
 *
 * FFmpeg 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.
 *
 * FFmpeg 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with FFmpeg; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 */

#ifndef AVUTIL_CPU_H
#define AVUTIL_CPU_H

#include "attributes.h"

#define AV_CPU_FLAG_FORCE    0x80000000 /* force usage of selected flags (OR) */

    /* lower 16 bits - CPU features */
#define AV_CPU_FLAG_MMX          0x0001 
#define AV_CPU_FLAG_MMXEXT       0x0002 
#define AV_CPU_FLAG_MMX2         0x0002 
#define AV_CPU_FLAG_3DNOW        0x0004 
#define AV_CPU_FLAG_SSE          0x0008 
#define AV_CPU_FLAG_SSE2         0x0010 
#define AV_CPU_FLAG_SSE2SLOW 0x40000000 
#define AV_CPU_FLAG_3DNOWEXT     0x0020 
#define AV_CPU_FLAG_SSE3         0x0040 
#define AV_CPU_FLAG_SSE3SLOW 0x20000000 
#define AV_CPU_FLAG_SSSE3        0x0080 
#define AV_CPU_FLAG_ATOM     0x10000000 
#define AV_CPU_FLAG_SSE4         0x0100 
#define AV_CPU_FLAG_SSE42        0x0200 
#define AV_CPU_FLAG_AVX          0x4000 
#define AV_CPU_FLAG_XOP          0x0400 
#define AV_CPU_FLAG_FMA4         0x0800 
// #if LIBAVUTIL_VERSION_MAJOR <52
#define AV_CPU_FLAG_CMOV      0x1001000 
// #else
// #define AV_CPU_FLAG_CMOV         0x1000 ///< supports cmov instruction
// #endif

#define AV_CPU_FLAG_ALTIVEC      0x0001 

#define AV_CPU_FLAG_ARMV5TE      (1 << 0)
#define AV_CPU_FLAG_ARMV6        (1 << 1)
#define AV_CPU_FLAG_ARMV6T2      (1 << 2)
#define AV_CPU_FLAG_VFP          (1 << 3)
#define AV_CPU_FLAG_VFPV3        (1 << 4)
#define AV_CPU_FLAG_NEON         (1 << 5)

int av_get_cpu_flags(void);

void av_force_cpu_flags(int flags);

attribute_deprecated void av_set_cpu_flags_mask(int mask);

attribute_deprecated
int av_parse_cpu_flags(const char *s);

int av_parse_cpu_caps(unsigned *flags, const char *s);

/* The following CPU-specific functions shall not be called directly. */
int ff_get_cpu_flags_arm(void);
int ff_get_cpu_flags_ppc(void);
int ff_get_cpu_flags_x86(void);

#endif /* AVUTIL_CPU_H */

---