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Basic version of libsharpyuv in libwebp, in C.
It's self contained apart from a dependency on src/webp/types.h and src/dsp/cpu.h For now it's only set up as an internal library, not an installable one. Webp doesn't depend on it yet, the code is only duplicated. Change-Id: I752799894f9d4105d0d296ddebd9f9641181a1ec
This commit is contained in:
Maryla
239
src/dsp/cpu.h
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239
src/dsp/cpu.h
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// Copyright 2022 Google Inc. All Rights Reserved.
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//
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// Use of this source code is governed by a BSD-style license
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// that can be found in the COPYING file in the root of the source
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// tree. An additional intellectual property rights grant can be found
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// in the file PATENTS. All contributing project authors may
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// be found in the AUTHORS file in the root of the source tree.
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// -----------------------------------------------------------------------------
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//
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// CPU detection functions and macros.
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//
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// Author: Skal (pascal.massimino@gmail.com)
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#ifndef WEBP_DSP_CPU_H_
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#define WEBP_DSP_CPU_H_
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#ifdef HAVE_CONFIG_H
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#include "src/webp/config.h"
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#endif
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#include "src/webp/types.h"
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#if defined(__GNUC__)
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#define LOCAL_GCC_VERSION ((__GNUC__ << 8) | __GNUC_MINOR__)
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#define LOCAL_GCC_PREREQ(maj, min) (LOCAL_GCC_VERSION >= (((maj) << 8) | (min)))
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#else
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#define LOCAL_GCC_VERSION 0
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#define LOCAL_GCC_PREREQ(maj, min) 0
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#endif
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#if defined(__clang__)
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#define LOCAL_CLANG_VERSION ((__clang_major__ << 8) | __clang_minor__)
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#define LOCAL_CLANG_PREREQ(maj, min) \
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(LOCAL_CLANG_VERSION >= (((maj) << 8) | (min)))
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#else
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#define LOCAL_CLANG_VERSION 0
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#define LOCAL_CLANG_PREREQ(maj, min) 0
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#endif
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#ifndef __has_builtin
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#define __has_builtin(x) 0
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#endif
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#if !defined(HAVE_CONFIG_H)
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#if defined(_MSC_VER) && _MSC_VER > 1310 && \
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(defined(_M_X64) || defined(_M_IX86))
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#define WEBP_MSC_SSE2 // Visual C++ SSE2 targets
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#endif
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#if defined(_MSC_VER) && _MSC_VER >= 1500 && \
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(defined(_M_X64) || defined(_M_IX86))
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#define WEBP_MSC_SSE41 // Visual C++ SSE4.1 targets
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#endif
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#endif
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// WEBP_HAVE_* are used to indicate the presence of the instruction set in dsp
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// files without intrinsics, allowing the corresponding Init() to be called.
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// Files containing intrinsics will need to be built targeting the instruction
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// set so should succeed on one of the earlier tests.
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#if (defined(__SSE2__) || defined(WEBP_MSC_SSE2)) && \
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(!defined(HAVE_CONFIG_H) || defined(WEBP_HAVE_SSE2))
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#define WEBP_USE_SSE2
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#endif
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#if defined(WEBP_USE_SSE2) && !defined(WEBP_HAVE_SSE2)
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#define WEBP_HAVE_SSE2
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#endif
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#if (defined(__SSE4_1__) || defined(WEBP_MSC_SSE41)) && \
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(!defined(HAVE_CONFIG_H) || defined(WEBP_HAVE_SSE41))
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#define WEBP_USE_SSE41
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#endif
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#if defined(WEBP_USE_SSE41) && !defined(WEBP_HAVE_SSE41)
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#define WEBP_HAVE_SSE41
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#endif
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#undef WEBP_MSC_SSE41
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#undef WEBP_MSC_SSE2
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// The intrinsics currently cause compiler errors with arm-nacl-gcc and the
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// inline assembly would need to be modified for use with Native Client.
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#if ((defined(__ARM_NEON__) || defined(__aarch64__)) && \
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(!defined(HAVE_CONFIG_H) || defined(WEBP_HAVE_NEON))) && \
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!defined(__native_client__)
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#define WEBP_USE_NEON
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#endif
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#if !defined(WEBP_USE_NEON) && defined(__ANDROID__) && \
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defined(__ARM_ARCH_7A__) && defined(HAVE_CPU_FEATURES_H)
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#define WEBP_ANDROID_NEON // Android targets that may have NEON
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#define WEBP_USE_NEON
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#endif
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// Note: ARM64 is supported in Visual Studio 2017, but requires the direct
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// inclusion of arm64_neon.h; Visual Studio 2019 includes this file in
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// arm_neon.h. Compile errors were seen with Visual Studio 2019 16.4 with
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// vtbl4_u8(); a fix was made in 16.6.
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#if defined(_MSC_VER) && ((_MSC_VER >= 1700 && defined(_M_ARM)) || \
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(_MSC_VER >= 1926 && defined(_M_ARM64)))
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#define WEBP_USE_NEON
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#define WEBP_USE_INTRINSICS
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#endif
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#if defined(WEBP_USE_NEON) && !defined(WEBP_HAVE_NEON)
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#define WEBP_HAVE_NEON
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#endif
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#if defined(__mips__) && !defined(__mips64) && defined(__mips_isa_rev) && \
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(__mips_isa_rev >= 1) && (__mips_isa_rev < 6)
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#define WEBP_USE_MIPS32
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#if (__mips_isa_rev >= 2)
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#define WEBP_USE_MIPS32_R2
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#if defined(__mips_dspr2) || (defined(__mips_dsp_rev) && __mips_dsp_rev >= 2)
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#define WEBP_USE_MIPS_DSP_R2
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#endif
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#endif
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#endif
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#if defined(__mips_msa) && defined(__mips_isa_rev) && (__mips_isa_rev >= 5)
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#define WEBP_USE_MSA
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#endif
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#ifndef WEBP_DSP_OMIT_C_CODE
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#define WEBP_DSP_OMIT_C_CODE 1
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#endif
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#if defined(WEBP_USE_NEON) && WEBP_DSP_OMIT_C_CODE
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#define WEBP_NEON_OMIT_C_CODE 1
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#else
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#define WEBP_NEON_OMIT_C_CODE 0
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#endif
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#if !(LOCAL_CLANG_PREREQ(3, 8) || LOCAL_GCC_PREREQ(4, 8) || \
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defined(__aarch64__))
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#define WEBP_NEON_WORK_AROUND_GCC 1
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#else
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#define WEBP_NEON_WORK_AROUND_GCC 0
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#endif
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// This macro prevents thread_sanitizer from reporting known concurrent writes.
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#define WEBP_TSAN_IGNORE_FUNCTION
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#if defined(__has_feature)
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#if __has_feature(thread_sanitizer)
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#undef WEBP_TSAN_IGNORE_FUNCTION
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#define WEBP_TSAN_IGNORE_FUNCTION __attribute__((no_sanitize_thread))
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#endif
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#endif
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#if defined(WEBP_USE_THREAD) && !defined(_WIN32)
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#include <pthread.h> // NOLINT
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#define WEBP_DSP_INIT(func) \
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do { \
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static volatile VP8CPUInfo func##_last_cpuinfo_used = \
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(VP8CPUInfo)&func##_last_cpuinfo_used; \
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static pthread_mutex_t func##_lock = PTHREAD_MUTEX_INITIALIZER; \
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if (pthread_mutex_lock(&func##_lock)) break; \
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if (func##_last_cpuinfo_used != VP8GetCPUInfo) func(); \
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func##_last_cpuinfo_used = VP8GetCPUInfo; \
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(void)pthread_mutex_unlock(&func##_lock); \
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} while (0)
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#else // !(defined(WEBP_USE_THREAD) && !defined(_WIN32))
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#define WEBP_DSP_INIT(func) \
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do { \
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static volatile VP8CPUInfo func##_last_cpuinfo_used = \
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(VP8CPUInfo)&func##_last_cpuinfo_used; \
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if (func##_last_cpuinfo_used == VP8GetCPUInfo) break; \
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func(); \
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func##_last_cpuinfo_used = VP8GetCPUInfo; \
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} while (0)
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#endif // defined(WEBP_USE_THREAD) && !defined(_WIN32)
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// Defines an Init + helper function that control multiple initialization of
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// function pointers / tables.
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/* Usage:
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WEBP_DSP_INIT_FUNC(InitFunc) {
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...function body
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}
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*/
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#define WEBP_DSP_INIT_FUNC(name) \
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static WEBP_TSAN_IGNORE_FUNCTION void name##_body(void); \
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WEBP_TSAN_IGNORE_FUNCTION void name(void) { WEBP_DSP_INIT(name##_body); } \
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static WEBP_TSAN_IGNORE_FUNCTION void name##_body(void)
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#define WEBP_UBSAN_IGNORE_UNDEF
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#define WEBP_UBSAN_IGNORE_UNSIGNED_OVERFLOW
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#if defined(__clang__) && defined(__has_attribute)
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#if __has_attribute(no_sanitize)
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// This macro prevents the undefined behavior sanitizer from reporting
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// failures. This is only meant to silence unaligned loads on platforms that
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// are known to support them.
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#undef WEBP_UBSAN_IGNORE_UNDEF
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#define WEBP_UBSAN_IGNORE_UNDEF __attribute__((no_sanitize("undefined")))
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// This macro prevents the undefined behavior sanitizer from reporting
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// failures related to unsigned integer overflows. This is only meant to
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// silence cases where this well defined behavior is expected.
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#undef WEBP_UBSAN_IGNORE_UNSIGNED_OVERFLOW
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#define WEBP_UBSAN_IGNORE_UNSIGNED_OVERFLOW \
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__attribute__((no_sanitize("unsigned-integer-overflow")))
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#endif
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#endif
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// If 'ptr' is NULL, returns NULL. Otherwise returns 'ptr + off'.
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// Prevents undefined behavior sanitizer nullptr-with-nonzero-offset warning.
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#if !defined(WEBP_OFFSET_PTR)
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#define WEBP_OFFSET_PTR(ptr, off) (((ptr) == NULL) ? NULL : ((ptr) + (off)))
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#endif
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// Regularize the definition of WEBP_SWAP_16BIT_CSP (backward compatibility)
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#if !defined(WEBP_SWAP_16BIT_CSP)
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#define WEBP_SWAP_16BIT_CSP 0
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#endif
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// some endian fix (e.g.: mips-gcc doesn't define __BIG_ENDIAN__)
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#if !defined(WORDS_BIGENDIAN) && \
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(defined(__BIG_ENDIAN__) || defined(_M_PPC) || \
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(defined(__BYTE_ORDER__) && (__BYTE_ORDER__ == __ORDER_BIG_ENDIAN__)))
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#define WORDS_BIGENDIAN
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#endif
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typedef enum {
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kSSE2,
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kSSE3,
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kSlowSSSE3, // special feature for slow SSSE3 architectures
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kSSE4_1,
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kAVX,
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kAVX2,
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kNEON,
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kMIPS32,
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kMIPSdspR2,
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kMSA
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} CPUFeature;
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// returns true if the CPU supports the feature.
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typedef int (*VP8CPUInfo)(CPUFeature feature);
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WEBP_EXTERN VP8CPUInfo VP8GetCPUInfo;
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#endif // WEBP_DSP_CPU_H_
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