/***

  Olive - Non-Linear Video Editor
  Copyright (C) 2022 Olive Team

  This program is free software: you can redistribute it and/or modify
  it under the terms of the GNU General Public License as published by
  the Free Software Foundation, either version 3 of the License, or
  (at your option) any later version.

  This program is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  GNU General Public License for more details.

  You should have received a copy of the GNU General Public License
  along with this program.  If not, see <http://www.gnu.org/licenses/>.

***/

#include "exportparams.h"

namespace olive {

ExportParams::ExportParams() :
  video_scaling_method_(kStretch),
  has_custom_range_(false)
{
}

bool ExportParams::has_custom_range() const
{
  return has_custom_range_;
}

const TimeRange &ExportParams::custom_range() const
{
  return custom_range_;
}

void ExportParams::set_custom_range(const TimeRange &custom_range)
{
  has_custom_range_ = true;
  custom_range_ = custom_range;
}

const ExportParams::VideoScalingMethod &ExportParams::video_scaling_method() const
{
  return video_scaling_method_;
}

void ExportParams::set_video_scaling_method(const ExportParams::VideoScalingMethod &video_scaling_method)
{
  video_scaling_method_ = video_scaling_method;
}

const ColorTransform &ExportParams::color_transform() const
{
  return color_transform_;
}

void ExportParams::set_color_transform(const ColorTransform &color_transform)
{
  color_transform_ = color_transform;
}

QMatrix4x4 ExportParams::GenerateMatrix(ExportParams::VideoScalingMethod method,
                                        int source_width, int source_height,
                                        int dest_width, int dest_height)
{
  QMatrix4x4 preview_matrix;

  if (method == ExportParams::kStretch) {
    return preview_matrix;
  }

  float export_ar = static_cast<float>(dest_width) / static_cast<float>(dest_height);
  float source_ar = static_cast<float>(source_width) / static_cast<float>(source_height);

  if (qFuzzyCompare(export_ar, source_ar)) {
    return preview_matrix;
  }

  if ((export_ar > source_ar) == (method == ExportParams::kFit)) {
    preview_matrix.scale(source_ar / export_ar, 1.0F);
  } else {
    preview_matrix.scale(1.0F, export_ar / source_ar);
  }

  return preview_matrix;
}

void ExportParams::Save(QXmlStreamWriter *writer) const
{
  writer->writeStartElement(QStringLiteral("export"));

  writer->writeTextElement(QStringLiteral("vscale"), QString::number(video_scaling_method_));

  writer->writeTextElement(QStringLiteral("range"), QString::number(has_custom_range_));

  writer->writeTextElement(QStringLiteral("customrangein"), custom_range_.in().toString());

  writer->writeTextElement(QStringLiteral("customrangeout"), custom_range_.out().toString());

  // FIXME: Change this when color chains are implemented
  writer->writeTextElement(QStringLiteral("color"), color_transform_.output());

  EncodingParams::Save(writer);

  writer->writeEndElement(); // export
}

}