#include <sstream> /* std::ostringstream */</sstream>

#include "tfxparam.h"

#include "stdfx.h"

#include "tfxattributes.h"

#include "ino_common.h"

#include "igs_gaussian_blur.h"

//------------------------------------------------------------

class ino_blur final : public TStandardRasterFx {

  FX_PLUGIN_DECLARATION(ino_blur)

  TRasterFxPort m_input;

  TRasterFxPort m_refer;

  TDoubleParamP m_radius;

  TIntEnumParamP m_ref_mode;

public:

  ino_blur() : m_radius(1.0), m_ref_mode(new TIntEnumParam(0, "Red")) {

    addInputPort("Source", this->m_input);

    addInputPort("Reference", this->m_refer);

    bindParam(this, "radius", this->m_radius);

    bindParam(this, "reference", this->m_ref_mode);

    this->m_radius->setMeasureName("fxLength");

    this->m_radius->setValueRange(0.0, 1000.0);

    this->m_ref_mode->addItem(1, "Green");

    this->m_ref_mode->addItem(2, "Blue");

    this->m_ref_mode->addItem(3, "Alpha");

    this->m_ref_mode->addItem(4, "Luminance");

    this->m_ref_mode->addItem(-1, "Nothing");

  }

  //------------------------------------------------------------

  double get_render_real_radius(const double frame, const TAffine affine) {

    /*--- ベクトルにする --- */

    TPointD rend_vect;

    rend_vect.x = this->m_radius->getValue(frame);

    rend_vect.y = 0.0;

    /*--- render用単位にする ---*/

    rend_vect = rend_vect * ino::pixel_per_mm();

    /* 単位変換(mm --> render_pixel) */

    /*--- 回転と拡大縮小のGeometryを反映させる ---*/

    /* 以下は、

toonz/main/sources/stdfx/motionblurfx.cpp

586-592行を参照して書いた

*/

    TAffine aff(affine);

    aff.a13 = aff.a23 = 0; /* 移動変換をしないで... */

    rend_vect         = aff * rend_vect;

    /*--- 方向は無視して長さを返す ---*/

    return sqrt(rend_vect.x * rend_vect.x + rend_vect.y * rend_vect.y);

  }

  void get_render_enlarge(const double frame, const TAffine affine,

                          TRectD &bBox) {

    const int margin = igs::gaussian_blur_hv::int_radius(

        this->get_render_real_radius(frame, affine));

    if (0 < margin) {

      bBox = bBox.enlarge(static_cast<double>(margin));</double>

    }

  }

  //------------------------------------------------------------

  bool doGetBBox(double frame, TRectD &bBox,

                 const TRenderSettings &info) override {

    if (false == this->m_input.isConnected()) {

      bBox = TRectD();

      return false;

    }

    const bool ret = this->m_input->doGetBBox(frame, bBox, info);

    this->get_render_enlarge(frame, info.m_affine, bBox);

    return ret;

  }

  int getMemoryRequirement(const TRectD &rect, double frame,

                           const TRenderSettings &info) override {

    TRectD bBox(rect);

    this->get_render_enlarge(frame, info.m_affine, bBox);

    return TRasterFx::memorySize(bBox, info.m_bpp);

  }

  void transform(double frame, int port, const TRectD &rectOnOutput,

                 const TRenderSettings &infoOnOutput, TRectD &rectOnInput,

                 TRenderSettings &infoOnInput) override {

    rectOnInput = rectOnOutput;

    infoOnInput = infoOnOutput;

    this->get_render_enlarge(frame, infoOnOutput.m_affine, rectOnInput);

  }

  bool canHandle(const TRenderSettings &info, double frame) override {

    if (0 == this->m_radius->getValue(frame)) {

      return true;

    } else {

      return isAlmostIsotropic(info.m_affine);

    }

  }

  void doCompute(TTile &tile, double frame,

                 const TRenderSettings &rend_sets) override;

};

FX_PLUGIN_IDENTIFIER(ino_blur, "inoBlurFx");

//------------------------------------------------------------

namespace {

void fx_(const TRasterP in_ras  // with margin

         ,

         TRasterP out_ras  // no margin

         ,

         const TRasterP refer_ras, const int refer_mode, const int int_radius,

         const double real_radius) {

  TRasterGR8P out_buffer(out_ras->getLy(),

                         out_ras->getLx() * ino::channels() *

                             ((TRaster64P)in_ras ? sizeof(unsigned short)

                                                 : sizeof(unsigned char)));

  const int buffer_bytes = igs::gaussian_blur_hv::buffer_bytes(

      in_ras->getLy(), in_ras->getLx(), int_radius);

  TRasterGR8P cvt_buffer(buffer_bytes, 1);

  out_buffer->lock();

  cvt_buffer->lock();

  igs::gaussian_blur_hv::convert(

      in_ras->getRawData()  // const void *in_with_margin (BGRA)

      ,

      out_buffer->getRawData()  // void *out_no_margin (BGRA)

      ,

      in_ras->getLy()  // const int height_with_margin

      ,

      in_ras->getLx()  // const int width_with_margin

      ,

      ino::channels()  // const int channels

      ,

      ino::bits(in_ras)  // const int bits

      ,

      (((refer_ras != nullptr) && (0 <= refer_mode))

           ? refer_ras->getRawData()

           : nullptr)  // BGRA // const unsigned char *ref

      ,

      (((refer_ras != nullptr) && (0 <= refer_mode)) ? ino::bits(refer_ras)

                                                     : 0)  // const int ref_bits

      ,

      refer_mode  // const int refer_mode

      ,

      cvt_buffer->getRawData()  // void *buffer

      ,

      buffer_bytes  // int buffer_bytes

      ,

      int_radius  // const int int_radius

      ,

      real_radius  // const double real_radius // , 0.25

      );

  ino::arr_to_ras(out_buffer->getRawData(), ino::channels(), out_ras, 0);

  cvt_buffer->unlock();

  out_buffer->unlock();

}

}

//------------------------------------------------------------

void ino_blur::doCompute(TTile &tile, double frame,

                         const TRenderSettings &rend_sets) {

  /*------ 接続していなければ処理しない ----------------------*/

  if (!this->m_input.isConnected()) {

    tile.getRaster()->clear(); /* 塗りつぶしクリア */

    return;

  }

  /*------ サポートしていないPixelタイプはエラーを投げる -----*/

  if (!((TRaster32P)tile.getRaster()) && !((TRaster64P)tile.getRaster())) {

    throw TRopException("unsupported input pixel type");

  }

  /*------ ボケ足長さの実際の長さをえる ----------------------*/

  const double real_radius =

      this->get_render_real_radius(frame, rend_sets.m_affine);

  const int int_radius = igs::gaussian_blur_hv::int_radius(real_radius);

  /*------ ボケ足長さがゼロのときはblur処理しない ------------*/

  if (0 == int_radius) {

    this->m_input->compute(tile, frame, rend_sets);

    return;

  }

  /*------- 動作パラメータを得る -----------------------------*/

  const int refer_mode = this->m_ref_mode->getValue();

  /*------ 表示の範囲を得る ----------------------------------*/

  TRectD bBox =

      TRectD(tile.m_pos /* Render画像上(Pixel単位)の位置 */

             ,

             TDimensionD(/* Render画像上(Pixel単位)のサイズ */

                         tile.getRaster()->getLx(), tile.getRaster()->getLy()));

  /*------ ぼけ半径(=マージン)分表示範囲を広げる -------------*/

  if (0 < int_radius) {

    bBox = bBox.enlarge(static_cast<double>(int_radius));</double>

  }

  /* ------ margin付き画像生成 ------------------------------ */

  /*

void allocateAndCompute(

TTile &tile

,const TPointD &pos

,const TDimension &size // TDimension = TDimensionI = TDimensionT<int></int>

,TRasterP templateRas

,double frame

,const TRenderSettings &info

);

*/

  TTile enlarge_tile;

  this->m_input->allocateAndCompute(

      enlarge_tile, bBox.getP00(),

      TDimensionI(/* Pixel単位に四捨五入 */

                  static_cast<int>(bBox.getLx() + 0.5),</int>

                  static_cast<int>(bBox.getLy() + 0.5)),</int>

      tile.getRaster(), frame, rend_sets);

  /*------ 参照画像生成 --------------------------------------*/

  TTile refer_tile;

  bool refer_sw = false;

  if (this->m_refer.isConnected()) {

    refer_sw = true;

    this->m_refer->allocateAndCompute(

        refer_tile, tile.m_pos /* TPointD */

        ,

        tile.getRaster()->getSize() /* Pixel単位 */

        ,

        tile.getRaster(), frame, rend_sets);

  }

  /* ------ 保存すべき画像メモリを塗りつぶしクリア ---------- */

  tile.getRaster()->clear(); /* 塗りつぶしクリア */

  /* ------ (app_begin)log記憶 ------------------------------ */

  const bool log_sw = ino::log_enable_sw();

  if (log_sw) {

    std::ostringstream os;

    os << "params"

       << "  usr_radius " << this->m_radius->getValue(frame) << "  real_radius "

       << real_radius << "  int_radius " << int_radius << "  refer_mode "

       << refer_mode << "  tile"

       << " pos " << tile.m_pos << " w " << tile.getRaster()->getLx() << " h "

       << tile.getRaster()->getLy() << "  enl_tile"

       << " w " << enlarge_tile.getRaster()->getLx() << " h "

       << enlarge_tile.getRaster()->getLy() << "  pixbits "

       << ino::pixel_bits(tile.getRaster()) << "  frame " << frame

       << "  affine a11 " << rend_sets.m_affine.a11 << "  a12 "

       << rend_sets.m_affine.a12 << "  a21 " << rend_sets.m_affine.a21

       << "  a22 " << rend_sets.m_affine.a22;

    if (refer_sw) {

      os << "  refer_tile"

         << " pos " << refer_tile.m_pos << " x "

         << refer_tile.getRaster()->getLx() << " y "

         << refer_tile.getRaster()->getLy();

    }

  }

  /* ------ fx処理 ------------------------------------------ */

  try {

    tile.getRaster()->lock();

    enlarge_tile.getRaster()->lock();

    if (refer_tile.getRaster() != nullptr) {

      refer_tile.getRaster()->lock();

    }

    fx_(enlarge_tile.getRaster()  // in with margin

        ,

        tile.getRaster()  // out with no margin

        ,

        refer_tile.getRaster(), refer_mode

        ,

        int_radius  // margin

        ,

        real_radius);

    if (refer_tile.getRaster() != nullptr) {

      refer_tile.getRaster()->unlock();

    }

    enlarge_tile.getRaster()->unlock();

    tile.getRaster()->unlock();

  }

  /* ------ error処理 --------------------------------------- */

  catch (std::bad_alloc &e) {

    if (refer_tile.getRaster() != nullptr) {

      refer_tile.getRaster()->unlock();

    }

    enlarge_tile.getRaster()->unlock();

    tile.getRaster()->unlock();

    if (log_sw) {

      std::string str("std::bad_alloc <");

      str += e.what();

      str += '>';

    }

    throw;

  } catch (std::exception &e) {

    if (refer_tile.getRaster() != nullptr) {

      refer_tile.getRaster()->unlock();

    }

    enlarge_tile.getRaster()->unlock();

    tile.getRaster()->unlock();

    if (log_sw) {

      std::string str("exception <");

      str += e.what();

      str += '>';

    }

    throw;

  } catch (...) {

    if (refer_tile.getRaster() != nullptr) {

      refer_tile.getRaster()->unlock();

    }

    enlarge_tile.getRaster()->unlock();

    tile.getRaster()->unlock();

    if (log_sw) {

      std::string str("other exception");

    }

    throw;

  }

}