/*

 * 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 <stddef.h>

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

    /* lower 16 bits - CPU features */

#define AV_CPU_FLAG_MMX          0x0001 ///< standard MMX

#define AV_CPU_FLAG_MMXEXT       0x0002 ///< SSE integer functions or AMD MMX ext

#define AV_CPU_FLAG_MMX2         0x0002 ///< SSE integer functions or AMD MMX ext

#define AV_CPU_FLAG_3DNOW        0x0004 ///< AMD 3DNOW

#define AV_CPU_FLAG_SSE          0x0008 ///< SSE functions

#define AV_CPU_FLAG_SSE2         0x0010 ///< PIV SSE2 functions

#define AV_CPU_FLAG_SSE2SLOW 0x40000000 ///< SSE2 supported, but usually not faster

                                        ///< than regular MMX/SSE (e.g. Core1)

#define AV_CPU_FLAG_3DNOWEXT     0x0020 ///< AMD 3DNowExt

#define AV_CPU_FLAG_SSE3         0x0040 ///< Prescott SSE3 functions

#define AV_CPU_FLAG_SSE3SLOW 0x20000000 ///< SSE3 supported, but usually not faster

                                        ///< than regular MMX/SSE (e.g. Core1)

#define AV_CPU_FLAG_SSSE3        0x0080 ///< Conroe SSSE3 functions

#define AV_CPU_FLAG_SSSE3SLOW 0x4000000 ///< SSSE3 supported, but usually not faster

#define AV_CPU_FLAG_ATOM     0x10000000 ///< Atom processor, some SSSE3 instructions are slower

#define AV_CPU_FLAG_SSE4         0x0100 ///< Penryn SSE4.1 functions

#define AV_CPU_FLAG_SSE42        0x0200 ///< Nehalem SSE4.2 functions

#define AV_CPU_FLAG_AESNI       0x80000 ///< Advanced Encryption Standard functions

#define AV_CPU_FLAG_AVX          0x4000 ///< AVX functions: requires OS support even if YMM registers aren't used

#define AV_CPU_FLAG_AVXSLOW   0x8000000 ///< AVX supported, but slow when using YMM registers (e.g. Bulldozer)

#define AV_CPU_FLAG_XOP          0x0400 ///< Bulldozer XOP functions

#define AV_CPU_FLAG_FMA4         0x0800 ///< Bulldozer FMA4 functions

#define AV_CPU_FLAG_CMOV         0x1000 ///< supports cmov instruction

#define AV_CPU_FLAG_AVX2         0x8000 ///< AVX2 functions: requires OS support even if YMM registers aren't used

#define AV_CPU_FLAG_FMA3        0x10000 ///< Haswell FMA3 functions

#define AV_CPU_FLAG_BMI1        0x20000 ///< Bit Manipulation Instruction Set 1

#define AV_CPU_FLAG_BMI2        0x40000 ///< Bit Manipulation Instruction Set 2

#define AV_CPU_FLAG_AVX512     0x100000 ///< AVX-512 functions: requires OS support even if YMM/ZMM registers aren't used

#define AV_CPU_FLAG_AVX512ICL  0x200000 ///< F/CD/BW/DQ/VL/VNNI/IFMA/VBMI/VBMI2/VPOPCNTDQ/BITALG/GFNI/VAES/VPCLMULQDQ

#define AV_CPU_FLAG_SLOW_GATHER  0x2000000 ///< CPU has slow gathers.

#define AV_CPU_FLAG_ALTIVEC      0x0001 ///< standard

#define AV_CPU_FLAG_VSX          0x0002 ///< ISA 2.06

#define AV_CPU_FLAG_POWER8       0x0004 ///< ISA 2.07

#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)

#define AV_CPU_FLAG_ARMV8        (1 << 6)

#define AV_CPU_FLAG_VFP_VM       (1 << 7) ///< VFPv2 vector mode, deprecated in ARMv7-A and unavailable in various CPUs implementations

#define AV_CPU_FLAG_SETEND       (1 <<16)

#define AV_CPU_FLAG_MMI          (1 << 0)

#define AV_CPU_FLAG_MSA          (1 << 1)

//Loongarch SIMD extension.

#define AV_CPU_FLAG_LSX          (1 << 0)

#define AV_CPU_FLAG_LASX         (1 << 1)

/**

 * Return the flags which specify extensions supported by the CPU.

 * The returned value is affected by av_force_cpu_flags() if that was used

 * before. So av_get_cpu_flags() can easily be used in an application to

 * detect the enabled cpu flags.

 */

int av_get_cpu_flags(void);

/**

 * Disables cpu detection and forces the specified flags.

 * -1 is a special case that disables forcing of specific flags.

 */

void av_force_cpu_flags(int flags);

/**

 * Parse CPU caps from a string and update the given AV_CPU_* flags based on that.

 *

 * @return negative on error.

 */

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

/**

 * @return the number of logical CPU cores present.

 */

int av_cpu_count(void);

/**

 * Overrides cpu count detection and forces the specified count.

 * Count < 1 disables forcing of specific count.

 */

void av_cpu_force_count(int count);

/**

 * Get the maximum data alignment that may be required by FFmpeg.

 *

 * Note that this is affected by the build configuration and the CPU flags mask,

 * so e.g. if the CPU supports AVX, but libavutil has been built with

 * --disable-avx or the AV_CPU_FLAG_AVX flag has been disabled through

 *  av_set_cpu_flags_mask(), then this function will behave as if AVX is not

 *  present.

 */

size_t av_cpu_max_align(void);

#endif /* AVUTIL_CPU_H */