#include "stdfx.h"

#include "tfxparam.h"

//#include "trop.h"

#include <math.h></math.h>

#include "tpixelutils.h"

#include "globalcontrollablefx.h"

//==================================================================

class ChannelMixerFx final : public GlobalControllableFx {

  FX_PLUGIN_DECLARATION(ChannelMixerFx)

  TRasterFxPort m_input;

  TDoubleParamP m_r_r;

  TDoubleParamP m_g_r;

  TDoubleParamP m_b_r;

  TDoubleParamP m_m_r;

  TDoubleParamP m_r_g;

  TDoubleParamP m_g_g;

  TDoubleParamP m_b_g;

  TDoubleParamP m_m_g;

  TDoubleParamP m_r_b;

  TDoubleParamP m_g_b;

  TDoubleParamP m_b_b;

  TDoubleParamP m_m_b;

  TDoubleParamP m_r_m;

  TDoubleParamP m_g_m;

  TDoubleParamP m_b_m;

  TDoubleParamP m_m_m;

public:

  ChannelMixerFx()

      : m_r_r(1.0)

      , m_g_r(0.0)

      , m_b_r(0.0)

      , m_m_r(0.0)

      , m_r_g(0.0)

      , m_g_g(1.0)

      , m_b_g(0.0)

      , m_m_g(0.0)

      , m_r_b(0.0)

      , m_g_b(0.0)

      , m_b_b(1.0)

      , m_m_b(0.0)

      , m_r_m(0.0)

      , m_g_m(0.0)

      , m_b_m(0.0)

      , m_m_m(1.0)

  {

    addInputPort("Source", m_input);

    bindParam(this, "red_to_red", m_r_r);

    bindParam(this, "green_to_red", m_g_r);

    bindParam(this, "blue_to_red", m_b_r);

    bindParam(this, "matte_to_red", m_m_r);

    bindParam(this, "red_to_green", m_r_g);

    bindParam(this, "green_to_green", m_g_g);

    bindParam(this, "blue_to_green", m_b_g);

    bindParam(this, "matte_to_green", m_m_g);

    bindParam(this, "red_to_blue", m_r_b);

    bindParam(this, "green_to_blue", m_g_b);

    bindParam(this, "blue_to_blue", m_b_b);

    bindParam(this, "matte_to_blue", m_m_b);

    bindParam(this, "red_to_matte", m_r_m);

    bindParam(this, "green_to_matte", m_g_m);

    bindParam(this, "blue_to_matte", m_b_m);

    bindParam(this, "matte_to_matte", m_m_m);

    m_r_r->setValueRange(0, 1);

    m_r_g->setValueRange(0, 1);

    m_r_b->setValueRange(0, 1);

    m_r_m->setValueRange(0, 1);

    m_g_r->setValueRange(0, 1);

    m_g_g->setValueRange(0, 1);

    m_g_b->setValueRange(0, 1);

    m_g_m->setValueRange(0, 1);

    m_b_r->setValueRange(0, 1);

    m_b_g->setValueRange(0, 1);

    m_b_b->setValueRange(0, 1);

    m_b_m->setValueRange(0, 1);

    m_m_r->setValueRange(0, 1);

    m_m_g->setValueRange(0, 1);

    m_m_b->setValueRange(0, 1);

    m_m_m->setValueRange(0, 1);

  }

  ~ChannelMixerFx(){};

  bool doGetBBox(double frame, TRectD &bBox,

                 const TRenderSettings &info) override {

    if (m_input.isConnected())

      return m_input->doGetBBox(frame, bBox, info);

    else {

      bBox = TRectD();

      return false;

    }

  };

  void doCompute(TTile &tile, double frame, const TRenderSettings &ri) override;

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

    return true;

  }

};

namespace {

template <typename channel_type="" pixel,="" typename=""></typename>

void depremult(PIXEL *pix) {

  if (!pix->m) return;

  double depremult = (double)PIXEL::maxChannelValue / pix->m;

  pix->r           = (CHANNEL_TYPE)(pix->r * depremult);

  pix->g           = (CHANNEL_TYPE)(pix->g * depremult);

  pix->b           = (CHANNEL_TYPE)(pix->b * depremult);

}

}  // namespace

template <typename channel_type="" pixel,="" typename=""></typename>

void doChannelMixer(TRasterPT<pixel> ras, double r_r, double r_g, double r_b,</pixel>

                    double r_m, double g_r, double g_g, double g_b, double g_m,

                    double b_r, double b_g, double b_b, double b_m, double m_r,

                    double m_g, double m_b, double m_m) {

  double aux = (double)PIXEL::maxChannelValue;

  int j;

  ras->lock();

  for (j = 0; j < ras->getLy(); j++) {

    PIXEL *pix    = ras->pixels(j);

    PIXEL *endPix = pix + ras->getLx();

    while (pix < endPix) {

      depremult<pixel, channel_type="">(pix);  // if removed, a black line appears</pixel,>

                                            // in the edge of a level (default

                                            // values, not black lines)

      double red   = pix->r * r_r + pix->g * g_r + pix->b * b_r + pix->m * m_r;

      double green = pix->r * r_g + pix->g * g_g + pix->b * b_g + pix->m * m_g;

      double blue  = pix->r * r_b + pix->g * g_b + pix->b * b_b + pix->m * m_b;

      double matte = pix->r * r_m + pix->g * g_m + pix->b * b_m + pix->m * m_m;

      red          = tcrop(red, 0.0, aux);

      green        = tcrop(green, 0.0, aux);

      blue         = tcrop(blue, 0.0, aux);

      matte        = tcrop(matte, 0.0, aux);

      pix->r       = (CHANNEL_TYPE)red;

      pix->g       = (CHANNEL_TYPE)green;

      pix->b       = (CHANNEL_TYPE)blue;

      pix->m       = (CHANNEL_TYPE)matte;

      *pix = premultiply(*pix);  // if removed, a white edged line appears in

                                 // the edge of a level (if m>r, g, b)

      pix++;

    }

  }

  ras->unlock();

}

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

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

                               const TRenderSettings &ri) {

  if (!m_input.isConnected()) return;

  m_input->compute(tile, frame, ri);

  double r_r = m_r_r->getValue(frame);

  double r_g = m_r_g->getValue(frame);

  double r_b = m_r_b->getValue(frame);

  double r_m = m_r_m->getValue(frame);

  double g_r = m_g_r->getValue(frame);

  double g_g = m_g_g->getValue(frame);

  double g_b = m_g_b->getValue(frame);

  double g_m = m_g_m->getValue(frame);

  double b_r = m_b_r->getValue(frame);

  double b_g = m_b_g->getValue(frame);

  double b_b = m_b_b->getValue(frame);

  double b_m = m_b_m->getValue(frame);

  double m_r = m_m_r->getValue(frame);

  double m_g = m_m_g->getValue(frame);

  double m_b = m_m_b->getValue(frame);

  double m_m = m_m_m->getValue(frame);

  TRaster32P raster32 = tile.getRaster();

  if (raster32)

    doChannelMixer<tpixel32, uchar="">(raster32, r_r, r_g, r_b, r_m, g_r, g_g, g_b,</tpixel32,>

                                    g_m, b_r, b_g, b_b, b_m, m_r, m_g, m_b,

                                    m_m);

  else {

    TRaster64P raster64 = tile.getRaster();

    if (raster64)

      doChannelMixer<tpixel64, ushort="">(raster64, r_r, r_g, r_b, r_m, g_r, g_g,</tpixel64,>

                                       g_b, g_m, b_r, b_g, b_b, b_m, m_r, m_g,

                                       m_b, m_m);

    else

      throw TException("Brightness&Contrast: unsupported Pixel Type");

  }

}

FX_PLUGIN_IDENTIFIER(ChannelMixerFx, "channelMixerFx")