Toshihiro Shimizu 890ddd
#include "igs_color_rgb_hls.h"
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namespace {
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void pixel_rgba_(const double red_in, const double gre_in, const double blu_in,
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                 double &red_out, double &gre_out, double &blu_out,
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                 const double hue_pivot  // 0.0  ...0...360...
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                 ,
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                 const double hue_scale  // 1.0  ...1...
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                 ,
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                 const double hue_shift  // 0.0  ...0...360...
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                 ,
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                 const double lig_pivot  // 0.0  ...0...1...
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                 ,
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                 const double lig_scale  // 1.0  ...1...
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                 ,
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                 const double lig_shift  // 0.0  ...0...1...
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                 ,
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                 const double sat_pivot  // 0.0  ...0...1...
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                 ,
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                 const double sat_scale  // 1.0  ...1...
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                 ,
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                 const double sat_shift  // 0.0  ...0...1...
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                 ) {
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  double hue, lig, sat;
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  igs::color::rgb_to_hls(red_in, gre_in, blu_in, hue, lig, sat);
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  if ((1.0 != hue_scale) || (0.0 != hue_shift)) {
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    hue -= hue_pivot;
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    while (hue < -180.0) {
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      hue += 360.0;
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    }
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    while (180.0 <= hue) {
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      hue -= 360.0;
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    }
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    hue *= hue_scale;
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    hue += hue_pivot;
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    hue += hue_shift;
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    while (hue < 0.0) {
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      hue += 360.0;
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    }
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    while (360.0 <= hue) {
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      hue -= 360.0;
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    }
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  }
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  if ((1.0 != lig_scale) || (0.0 != lig_shift)) {
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    lig -= lig_pivot;
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    lig *= lig_scale;
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    lig += lig_pivot;
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    lig += lig_shift;
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    lig = (lig < 0.0) ? 0.0 : ((1.0 < lig) ? 1.0 : lig);
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  }
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  if ((1.0 != sat_scale) || (0.0 != sat_shift)) {
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    sat -= sat_pivot;
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    sat *= sat_scale;
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    sat += sat_pivot;
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    sat += sat_shift;
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    sat = (sat < 0.0) ? 0.0 : ((1.0 < sat) ? 1.0 : sat);
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  }
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  igs::color::hls_to_rgb(hue, lig, sat, red_out, gre_out, blu_out);
Toshihiro Shimizu 890ddd
}
Toshihiro Shimizu 890ddd
}
Toshihiro Shimizu 890ddd
//------------------------------------------------------------
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#include <limits>           /* std::numeric_limits */</limits>
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#include "igs_ifx_common.h" /* igs::image::rgba */
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#include "igs_hls_adjust.h"
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namespace {
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/* raster画像にノイズをのせるtemplate */
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template <class class="" it,="" rt=""></class>
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void change_template_(
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    IT *image_array, const int height, const int width, const int channels
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    ,
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    const RT *ref /* 求める画像(out)と同じ高さ、幅、チャンネル数 */
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    ,
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    const int ref_mode /* 0=R,1=G,2=B,3=A,4=Luminance,5=Nothing */
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    ,
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    const double hue_pivot, const double hue_scale, const double hue_shift,
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    const double lig_pivot, const double lig_scale, const double lig_shift,
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    const double sat_pivot, const double sat_scale, const double sat_shift
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    ,
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    const bool add_blend_sw) {
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  const int t_max      = std::numeric_limits<it>::max();</it>
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  const double div_val = static_cast<double>(t_max);</double>
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  const double mul_val = static_cast<double>(t_max) + 0.999999;</double>
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  const int pixsize    = height * width;
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  const int r_max      = std::numeric_limits<rt>::max();</rt>
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  if (igs::image::rgba::siz == channels) {
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    using namespace igs::image::rgba;
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    for (int ii = 0; ii < pixsize; ++ii, image_array += channels) {
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      /* 変化量初期値 */
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      double refv = 1.0;
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      /* 参照画像あればピクセル単位の画像変化量を得る */
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      if (ref != 0) {
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        refv *= igs::color::ref_value(ref, channels, r_max, ref_mode);
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        ref += channels; /* continue;の前に行うこと */
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      }
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      /* 加算合成で、Alpha値ゼロならRGB値を計算する必要はない */
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      if (add_blend_sw && (0 == image_array[alp])) {
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        continue;
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      }
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      /* 加算合成でなくAlpha合成の時は、
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      Alpha値がゼロでもRGB値は存在する(してもよい) */
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      /* RGB値を正規化 */
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      const IT *const ia = image_array;
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      const double rr1   = static_cast<double>(ia[red]) / div_val;</double>
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      const double gg1   = static_cast<double>(ia[gre]) / div_val;</double>
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      const double bb1   = static_cast<double>(ia[blu]) / div_val;</double>
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      /* pivot,scale,shiftによってRGB値を変化する */
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      double rr2, gg2, bb2;
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      pixel_rgba_(rr1, gg1, bb1, rr2, gg2, bb2, hue_pivot, hue_scale, hue_shift,
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                  lig_pivot, lig_scale, lig_shift, sat_pivot, sat_scale,
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                  sat_shift);
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      /* 加算合成で、その値がMaxでなければ変化量に乗算 */
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      if (add_blend_sw && (ia[alp] < t_max)) {
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        refv *= static_cast<double>(ia[alp]) / div_val;</double>
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      }
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      /* ピクセル単位の変化量があれば、RGBを調整する */
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      if ((ref != 0) || (add_blend_sw && (ia[alp] < t_max))) {
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        rr2 = rr1 + (rr2 - rr1) * refv;
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        gg2 = gg1 + (gg2 - gg1) * refv;
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        bb2 = bb1 + (bb2 - bb1) * refv;
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      }
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      /* 結果をRGBに戻す */
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      image_array[red] = static_cast<it>(rr2 * mul_val);</it>
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      image_array[gre] = static_cast<it>(gg2 * mul_val);</it>
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      image_array[blu] = static_cast<it>(bb2 * mul_val);</it>
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    }
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  } else if (igs::image::rgb::siz == channels) {
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    using namespace igs::image::rgb;
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    for (int ii = 0; ii < pixsize; ++ii, image_array += channels) {
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      double refv = 1.0;
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      if (ref != 0) {
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        refv *= igs::color::ref_value(ref, channels, r_max, ref_mode);
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        ref += channels;
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      }
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      const IT *const ia = image_array;
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      const double rr1   = static_cast<double>(ia[red]) / div_val;</double>
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      const double gg1   = static_cast<double>(ia[gre]) / div_val;</double>
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      const double bb1   = static_cast<double>(ia[blu]) / div_val;</double>
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      double rr2, gg2, bb2;
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      pixel_rgba_(rr1, gg1, bb1, rr2, gg2, bb2, hue_pivot, hue_scale, hue_shift,
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                  lig_pivot, lig_scale, lig_shift, sat_pivot, sat_scale,
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                  sat_shift);
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      if (ref != 0) {
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        rr2 = rr1 + (rr2 - rr1) * refv;
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        gg2 = gg1 + (gg2 - gg1) * refv;
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        bb2 = bb1 + (bb2 - bb1) * refv;
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      }
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      image_array[red] = static_cast<it>(rr2 * mul_val);</it>
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      image_array[gre] = static_cast<it>(gg2 * mul_val);</it>
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      image_array[blu] = static_cast<it>(bb2 * mul_val);</it>
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    }
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  } else if (1 == channels) { /* grayscale */
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    for (int ii = 0; ii < pixsize; ++ii, image_array += channels) {
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      double refv = 1.0;
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      if (ref != 0) {
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        refv *= igs::color::ref_value(ref, channels, r_max, ref_mode);
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        ref += channels;
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      }
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      double li1 = static_cast<double>(image_array[0]) / div_val,</double>
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             li2 = (li1 - lig_pivot) * lig_scale + lig_pivot + lig_shift;
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      li2        = (li2 < 0.0) ? 0.0 : ((1.0 < li2) ? 1.0 : li2);
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      if (ref != 0) {
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        li2 = li1 + (li2 - li1) * refv;
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      }
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      image_array[0] = static_cast<it>(li2 * mul_val);</it>
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    }
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  }
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}
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}
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#include <stdexcept> /* std::domain_error  */</stdexcept>
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void igs::hls_adjust::change(
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    unsigned char *image_array, const int height, const int width,
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    const int channels, const int bits
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    ,
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    const unsigned char *ref /* 求める画像と同じ高、幅、channels数 */
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    ,
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    const int ref_bits /* refがゼロのときはここもゼロ */
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    ,
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    const int ref_mode /* 0=R,1=G,2=B,3=A,4=Luminance,5=Nothing */
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    ,
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    const double hue_pivot, const double hue_scale, const double hue_shift,
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    const double lig_pivot, const double lig_scale, const double lig_shift,
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    const double sat_pivot, const double sat_scale, const double sat_shift
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    ,
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    const bool add_blend_sw) {
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  if ((1.0 == hue_scale) && (0.0 == hue_shift) && (1.0 == lig_scale) &&
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      (0.0 == lig_shift) && (1.0 == sat_scale) && (0.0 == sat_shift)) {
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    return;
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  }
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  if ((igs::image::rgba::siz != channels) &&
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      (igs::image::rgb::siz != channels) && (1 != channels) /* grayscale */
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      ) {
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    throw std::domain_error("Bad channels,Not rgba/rgb/grayscale");
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  }
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  /* rgb(a)画像にhls(a)でドットノイズを加える */
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  if ((std::numeric_limits<unsigned char="">::digits == bits) &&</unsigned>
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      ((std::numeric_limits<unsigned char="">::digits == ref_bits) ||</unsigned>
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       (0 == ref_bits))) {
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    change_template_(image_array, height, width, channels, ref, ref_mode,
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                     hue_pivot, hue_scale, hue_shift, lig_pivot, lig_scale,
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                     lig_shift, sat_pivot, sat_scale, sat_shift, add_blend_sw);
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  } else if ((std::numeric_limits<unsigned short="">::digits == bits) &&</unsigned>
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             ((std::numeric_limits<unsigned char="">::digits == ref_bits) ||</unsigned>
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              (0 == ref_bits))) {
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    change_template_(reinterpret_cast<unsigned *="" short="">(image_array), height,</unsigned>
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                     width, channels, ref, ref_mode, hue_pivot, hue_scale,
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                     hue_shift, lig_pivot, lig_scale, lig_shift, sat_pivot,
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                     sat_scale, sat_shift, add_blend_sw);
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  } else if ((std::numeric_limits<unsigned short="">::digits == bits) &&</unsigned>
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             (std::numeric_limits<unsigned short="">::digits == ref_bits)) {</unsigned>
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    change_template_(reinterpret_cast<unsigned *="" short="">(image_array), height,</unsigned>
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                     width, channels,
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                     reinterpret_cast<const *="" short="" unsigned="">(ref), ref_mode,</const>
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                     hue_pivot, hue_scale, hue_shift, lig_pivot, lig_scale,
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                     lig_shift, sat_pivot, sat_scale, sat_shift, add_blend_sw);
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  } else if ((std::numeric_limits<unsigned char="">::digits == bits) &&</unsigned>
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             (std::numeric_limits<unsigned short="">::digits == ref_bits)) {</unsigned>
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    change_template_(image_array, height, width, channels,
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                     reinterpret_cast<const *="" short="" unsigned="">(ref), ref_mode,</const>
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                     hue_pivot, hue_scale, hue_shift, lig_pivot, lig_scale,
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                     lig_shift, sat_pivot, sat_scale, sat_shift, add_blend_sw);
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  } else {
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    throw std::domain_error("Bad bits,Not uchar/ushort");
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  }
Toshihiro Shimizu 890ddd
}