tesseract::SIMDDetect Class Reference

#include <simddetect.h>

Static Public Member Functions
static bool	IsAVXAvailable ()
static bool	IsAVX2Available ()
static bool	IsAVX512FAvailable ()
static bool	IsAVX512BWAvailable ()
static bool	IsAVX512VNNIAvailable ()
static bool	IsFMAAvailable ()
static bool	IsSSEAvailable ()
static bool	IsNEONAvailable ()
static TESS_API void	Update ()

Detailed Description

Definition at line 32 of file simddetect.h.

Member Function Documentation

IsAVX2Available()

static bool tesseract::SIMDDetect::IsAVX2Available ( )

inlinestatic

Definition at line 39 of file simddetect.h.

                                       {
    return detector.avx2_available_;
  }

IsAVX512BWAvailable()

static bool tesseract::SIMDDetect::IsAVX512BWAvailable ( )

inlinestatic

Definition at line 47 of file simddetect.h.

                                           {
    return detector.avx512BW_available_;
  }

IsAVX512FAvailable()

static bool tesseract::SIMDDetect::IsAVX512FAvailable ( )

inlinestatic

Definition at line 43 of file simddetect.h.

                                          {
    return detector.avx512F_available_;
  }

IsAVX512VNNIAvailable()

static bool tesseract::SIMDDetect::IsAVX512VNNIAvailable ( )

inlinestatic

Definition at line 51 of file simddetect.h.

                                             {
    return detector.avx512VNNI_available_;
  }

IsAVXAvailable()

static bool tesseract::SIMDDetect::IsAVXAvailable ( )

inlinestatic

Definition at line 35 of file simddetect.h.

                                      {
    return detector.avx_available_;
  }

IsFMAAvailable()

static bool tesseract::SIMDDetect::IsFMAAvailable ( )

inlinestatic

Definition at line 55 of file simddetect.h.

                                      {
    return detector.fma_available_;
  }

IsNEONAvailable()

static bool tesseract::SIMDDetect::IsNEONAvailable ( )

inlinestatic

Definition at line 63 of file simddetect.h.

                                       {
    return detector.neon_available_;
  }

IsSSEAvailable()

static bool tesseract::SIMDDetect::IsSSEAvailable ( )

inlinestatic

Definition at line 59 of file simddetect.h.

                                      {
    return detector.sse_available_;
  }

Update()

void tesseract::SIMDDetect::Update ( )

static

Definition at line 272 of file simddetect.cpp.

                        {
  // Select code for calculation of dot product based on the
  // value of the config variable if that value is not empty.
  const char *dotproduct_method = "generic";
  if (dotproduct == "auto") {
    // Automatic detection. Nothing to be done.
  } else if (dotproduct == "generic") {
    // Generic code selected by config variable.
    SetDotProduct(DotProductGeneric);
    dotproduct_method = "generic";
  } else if (dotproduct == "native") {
    // Native optimized code selected by config variable.
    SetDotProduct(DotProductNative, IntSimdMatrix::intSimdMatrix);
    dotproduct_method = "native";
#if defined(HAVE_AVX2)
  } else if (dotproduct == "avx2") {
    // AVX2 selected by config variable.
    SetDotProduct(DotProductAVX, &IntSimdMatrix::intSimdMatrixAVX2);
    dotproduct_method = "avx2";
#endif
#if defined(HAVE_AVX)
  } else if (dotproduct == "avx") {
    // AVX selected by config variable.
    SetDotProduct(DotProductAVX, &IntSimdMatrix::intSimdMatrixSSE);
    dotproduct_method = "avx";
#endif
#if defined(HAVE_FMA)
  } else if (dotproduct == "fma") {
    // FMA selected by config variable.
    SetDotProduct(DotProductFMA, IntSimdMatrix::intSimdMatrix);
    dotproduct_method = "fma";
#endif
#if defined(HAVE_SSE4_1)
  } else if (dotproduct == "sse") {
    // SSE selected by config variable.
    SetDotProduct(DotProductSSE, &IntSimdMatrix::intSimdMatrixSSE);
    dotproduct_method = "sse";
#endif
#if defined(HAVE_FRAMEWORK_ACCELERATE)
  } else if (dotproduct == "accelerate") {
    SetDotProduct(DotProductAccelerate, IntSimdMatrix::intSimdMatrix);
#endif
#if defined(HAVE_NEON) || defined(__aarch64__)
  } else if (dotproduct == "neon" && neon_available_) {
    // NEON selected by config variable.
    SetDotProduct(DotProductNEON, &IntSimdMatrix::intSimdMatrixNEON);
    dotproduct_method = "neon";
#endif
  } else if (dotproduct == "std::inner_product") {
    // std::inner_product selected by config variable.
    SetDotProduct(DotProductStdInnerProduct, IntSimdMatrix::intSimdMatrix);
    dotproduct_method = "std::inner_product";
  } else {
    // Unsupported value of config variable.
    tprintf("Warning, ignoring unsupported config variable value: dotproduct=%s\n",
            dotproduct.c_str());
    tprintf(
        "Supported values for dotproduct: auto generic native"
#if defined(HAVE_AVX2)
        " avx2"
#endif
#if defined(HAVE_AVX)
        " avx"
#endif
#if defined(HAVE_FMA)
        " fma"
#endif
#if defined(HAVE_SSE4_1)
        " sse"
#endif
#if defined(HAVE_FRAMEWORK_ACCELERATE)
        " accelerate"
#endif
        " std::inner_product.\n");
  }
 
  dotproduct.set_value(dotproduct_method);
}

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The documentation for this class was generated from the following files:

• /media/home/debian/src/github/tesseract-ocr/tesseract/src/arch/simddetect.h
• /media/home/debian/src/github/tesseract-ocr/tesseract/src/arch/simddetect.cpp