0cfed22ed4
Description: 由于仓库中的Tesseract不是最新版本导致产生了一个bug，因此将Tesseract源码集成到项目中 Log: no Change-Id: I088de95d6c6ab670406daa8d47ed2ed46929c2c0
88 lines
3.1 KiB
C++
88 lines
3.1 KiB
C++
///////////////////////////////////////////////////////////////////////
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// File: simddetect.h
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// Description: Architecture detector.
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// Author: Stefan Weil (based on code from Ray Smith)
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//
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// (C) Copyright 2014, Google Inc.
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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// http://www.apache.org/licenses/LICENSE-2.0
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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///////////////////////////////////////////////////////////////////////
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#ifndef TESSERACT_ARCH_SIMDDETECT_H_
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#define TESSERACT_ARCH_SIMDDETECT_H_
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#include <tesseract/export.h>
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namespace tesseract {
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// Function pointer for best calculation of dot product.
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using DotProductFunction = double (*)(const double *, const double *, int);
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extern DotProductFunction DotProduct;
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// Architecture detector. Add code here to detect any other architectures for
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// SIMD-based faster dot product functions. Intended to be a single static
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// object, but it does no real harm to have more than one.
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class SIMDDetect {
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public:
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// Returns true if AVX is available on this system.
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static inline bool IsAVXAvailable() {
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return detector.avx_available_;
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}
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// Returns true if AVX2 (integer support) is available on this system.
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static inline bool IsAVX2Available() {
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return detector.avx2_available_;
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}
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// Returns true if AVX512 Foundation (float) is available on this system.
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static inline bool IsAVX512FAvailable() {
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return detector.avx512F_available_;
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}
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// Returns true if AVX512 integer is available on this system.
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static inline bool IsAVX512BWAvailable() {
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return detector.avx512BW_available_;
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}
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// Returns true if FMA is available on this system.
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static inline bool IsFMAAvailable() {
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return detector.fma_available_;
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}
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// Returns true if SSE4.1 is available on this system.
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static inline bool IsSSEAvailable() {
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return detector.sse_available_;
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}
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// Returns true if NEON is available on this system.
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static inline bool IsNEONAvailable() {
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return detector.neon_available_;
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}
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// Update settings after config variable was set.
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static TESS_API void Update();
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private:
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// Constructor, must set all static member variables.
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SIMDDetect();
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private:
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// Singleton.
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static SIMDDetect detector;
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// If true, then AVX has been detected.
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static TESS_API bool avx_available_;
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static TESS_API bool avx2_available_;
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static TESS_API bool avx512F_available_;
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static TESS_API bool avx512BW_available_;
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// If true, then FMA has been detected.
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static TESS_API bool fma_available_;
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// If true, then SSe4.1 has been detected.
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static TESS_API bool sse_available_;
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// If true, then NEON has been detected.
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static TESS_API bool neon_available_;
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};
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} // namespace tesseract
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#endif // TESSERACT_ARCH_SIMDDETECT_H_
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