PixelProperties.h

/*
 * #%L
 * OME-FILES C++ library for image IO.
 * Copyright © 2006 - 2015 Open Microscopy Environment:
 *   - Massachusetts Institute of Technology
 *   - National Institutes of Health
 *   - University of Dundee
 *   - Board of Regents of the University of Wisconsin-Madison
 *   - Glencoe Software, Inc.
 * %%
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#ifndef OME_FILES_PIXELPROPERTIES_H
#define OME_FILES_PIXELPROPERTIES_H

#include <cstdint>
#include <complex>

#include <ome/common/boolean.h>
#include <ome/common/endian.h>

#include <ome/files/Types.h>

#include <ome/xml/model/enums/PixelType.h>

namespace ome
{
  namespace files
  {

    template<int>
    struct PixelProperties;

    template<class P>
    struct PixelPropertiesBase
    {
      static pixel_size_type
      pixel_byte_size()
      {
        return sizeof(typename P::std_type);
      }

      static pixel_size_type
      pixel_bit_size()
      {
        return pixel_byte_size() * 8;
      }

      static pixel_size_type
      pixel_significant_bit_size()
      {
        return pixel_bit_size();
      }
    };

    template<>
    struct PixelProperties<::ome::xml::model::enums::PixelType::INT8> :
      public PixelPropertiesBase<PixelProperties<::ome::xml::model::enums::PixelType::INT8>>
    {
      typedef int8_t std_type;

      typedef boost::endian::big_int8_t big_type;
      typedef boost::endian::little_int8_t little_type;
      typedef boost::endian::native_int8_t native_type;

      static const bool is_signed = true;
      static const bool is_integer = true;
      static const bool is_complex = false;
    };

    template<>
    struct PixelProperties<::ome::xml::model::enums::PixelType::INT16> :
      public PixelPropertiesBase<PixelProperties<::ome::xml::model::enums::PixelType::INT16>>
    {
      typedef int16_t std_type;

      typedef boost::endian::big_int16_t big_type;
      typedef boost::endian::little_int16_t little_type;
      typedef boost::endian::native_int16_t native_type;

      static const bool is_signed = true;
      static const bool is_integer = true;
      static const bool is_complex = false;
    };

    template<>
    struct PixelProperties<::ome::xml::model::enums::PixelType::INT32> :
      public PixelPropertiesBase<PixelProperties<::ome::xml::model::enums::PixelType::INT32>>
    {
      typedef int32_t std_type;

      typedef boost::endian::big_int32_t big_type;
      typedef boost::endian::little_int32_t little_type;
      typedef boost::endian::native_int32_t native_type;

      static const bool is_signed = true;
      static const bool is_integer = true;
      static const bool is_complex = false;
    };

    template<>
    struct PixelProperties<::ome::xml::model::enums::PixelType::UINT8> :
      public PixelPropertiesBase<PixelProperties<::ome::xml::model::enums::PixelType::UINT8>>
    {
      typedef uint8_t std_type;

      typedef boost::endian::big_uint8_t big_type;
      typedef boost::endian::little_uint8_t little_type;
      typedef boost::endian::native_uint8_t native_type;

      static const bool is_signed = false;
      static const bool is_integer = true;
      static const bool is_complex = false;
    };

    template<>
    struct PixelProperties<::ome::xml::model::enums::PixelType::UINT16> :
      public PixelPropertiesBase<struct PixelProperties<::ome::xml::model::enums::PixelType::UINT16>>
    {
      typedef uint16_t std_type;

      typedef boost::endian::big_uint16_t big_type;
      typedef boost::endian::little_uint16_t little_type;
      typedef boost::endian::native_uint16_t native_type;

      static const bool is_signed = false;
      static const bool is_integer = true;
      static const bool is_complex = false;
    };

    template<>
    struct PixelProperties<::ome::xml::model::enums::PixelType::UINT32> :
      public PixelPropertiesBase<PixelProperties<::ome::xml::model::enums::PixelType::UINT32>>
    {
      typedef uint32_t std_type;

      typedef boost::endian::big_uint32_t big_type;
      typedef boost::endian::little_uint32_t little_type;
      typedef boost::endian::native_uint32_t native_type;

      static const bool is_signed = false;
      static const bool is_integer = true;
      static const bool is_complex = false;
    };

    template<>
    struct PixelProperties<::ome::xml::model::enums::PixelType::FLOAT> :
      public PixelPropertiesBase<PixelProperties<::ome::xml::model::enums::PixelType::FLOAT>>
    {
      typedef float std_type;

      typedef boost::endian::big_float32_t big_type;
      typedef boost::endian::little_float32_t little_type;
      typedef boost::endian::native_float32_t native_type;

      static const bool is_signed = true;
      static const bool is_integer = false;
      static const bool is_complex = false;
    };

    template<>
    struct PixelProperties<::ome::xml::model::enums::PixelType::DOUBLE> :
      public PixelPropertiesBase<PixelProperties<::ome::xml::model::enums::PixelType::DOUBLE>>
    {
      typedef double std_type;

      typedef boost::endian::big_float64_t big_type;
      typedef boost::endian::little_float64_t little_type;
      typedef boost::endian::native_float64_t native_type;

      static const bool is_signed = true;
      static const bool is_integer = false;
      static const bool is_complex = false;
    };

    template<>
    struct PixelProperties<::ome::xml::model::enums::PixelType::BIT> :
      public PixelPropertiesBase<PixelProperties<::ome::xml::model::enums::PixelType::BIT>>
    {
      typedef bool std_type;

      typedef ome::common::boolean big_type;
      typedef ome::common::boolean little_type;
      typedef ome::common::boolean native_type;

      static const bool is_signed = false;
      static const bool is_integer = true;
      static const bool is_complex = false;

      static pixel_size_type
      pixel_significant_bit_size()
      {
        return 1;
      }
    };

    template<>
    struct PixelProperties<::ome::xml::model::enums::PixelType::COMPLEXFLOAT> :
      public PixelPropertiesBase<PixelProperties<::ome::xml::model::enums::PixelType::COMPLEXFLOAT>>
    {
      typedef std::complex<float> std_type;

      typedef std::complex<boost::endian::big_float32_t> big_type;
      typedef std::complex<boost::endian::little_float32_t> little_type;
      typedef std::complex<boost::endian::native_float32_t> native_type;

      static const bool is_signed = true;
      static const bool is_integer = false;
      static const bool is_complex = true;
    };

    template<>
    struct PixelProperties<::ome::xml::model::enums::PixelType::COMPLEXDOUBLE> :
      public PixelPropertiesBase<PixelProperties<::ome::xml::model::enums::PixelType::COMPLEXDOUBLE>>
    {
      typedef std::complex<double> std_type;

      typedef std::complex<boost::endian::big_float64_t> big_type;
      typedef std::complex<boost::endian::little_float64_t> little_type;
      typedef std::complex<boost::endian::native_float64_t> native_type;

      static const bool is_signed = true;
      static const bool is_integer = false;
      static const bool is_complex = true;
    };

    template<int, int>
    struct PixelEndianProperties;

    template<int P>
    struct PixelEndianProperties<P, ENDIAN_BIG>
    {
      typedef typename PixelProperties<P>::big_type type;
    };

    template<int P>
    struct PixelEndianProperties<P, ENDIAN_LITTLE>
    {
      typedef typename PixelProperties<P>::little_type type;
    };

    template<int P>
    struct PixelEndianProperties<P, ENDIAN_NATIVE>
    {
      typedef typename PixelProperties<P>::native_type type;
    };

    pixel_size_type
    bytesPerPixel(::ome::xml::model::enums::PixelType pixeltype);

    pixel_size_type
    bitsPerPixel(::ome::xml::model::enums::PixelType pixeltype);

    pixel_size_type
    significantBitsPerPixel(::ome::xml::model::enums::PixelType pixeltype);

    bool
    isSigned(::ome::xml::model::enums::PixelType pixeltype);

    bool
    isInteger(::ome::xml::model::enums::PixelType pixeltype);

    bool
    isFloatingPoint(::ome::xml::model::enums::PixelType pixeltype);

    bool
    isComplex(::ome::xml::model::enums::PixelType pixeltype);

    ::ome::xml::model::enums::PixelType
    pixelTypeFromBytes(pixel_size_type bytes,
                       bool            is_signed = false,
                       bool            is_integer = true,
                       bool            is_complex = false);

    ::ome::xml::model::enums::PixelType
    pixelTypeFromBits(pixel_size_type bytes,
                      bool            is_signed = false,
                      bool            is_integer = true,
                      bool            is_complex = false);

    template<typename T>
    inline void
    byteswap(T& value)
    {
      boost::endian::reverse(value);
    }

    template<>
    inline void
    byteswap(std::complex<float>& value)
    {
      // For pre-C++11 compatibility, it's not possible to byteswap in
      // place.
      value = std::complex<float>(reverse_value(value.real()),
                                  reverse_value(value.imag()));
    }

    template<>
    inline void
    byteswap(std::complex<double>& value)
    {
      // For pre-C++11 compatibility, it's not possible to byteswap in
      // place.
      value = std::complex<double>(reverse_value(value.real()),
                                   reverse_value(value.imag()));
    }

  }
}

#endif // OME_FILES_PIXELPROPERTIES_H

/*
 * Local Variables:
 * mode:C++
 * End:
 */