/*
 * 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 2
 * 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, write to the Free Software Foundation,
 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 * Copyright 2011, Blender Foundation.
 */

#include "COM_MovieClipNode.h"
#include "COM_ConvertColorProfileOperation.h"
#include "COM_ExecutionSystem.h"
#include "COM_MovieClipOperation.h"
#include "COM_SetValueOperation.h"

#include "BKE_movieclip.h"
#include "BKE_tracking.h"

#include "DNA_movieclip_types.h"

#include "IMB_imbuf.h"

namespace blender::compositor {

MovieClipNode::MovieClipNode(bNode *editorNode) : Node(editorNode)
{
  /* pass */
}

void MovieClipNode::convertToOperations(NodeConverter &converter,
                                        const CompositorContext &context) const
{
  NodeOutput *outputMovieClip = this->getOutputSocket(0);
  NodeOutput *alphaMovieClip = this->getOutputSocket(1);
  NodeOutput *offsetXMovieClip = this->getOutputSocket(2);
  NodeOutput *offsetYMovieClip = this->getOutputSocket(3);
  NodeOutput *scaleMovieClip = this->getOutputSocket(4);
  NodeOutput *angleMovieClip = this->getOutputSocket(5);

  bNode *editorNode = this->getbNode();
  MovieClip *movieClip = (MovieClip *)editorNode->id;
  MovieClipUser *movieClipUser = (MovieClipUser *)editorNode->storage;
  bool cacheFrame = !context.isRendering();

  ImBuf *ibuf = nullptr;
  if (movieClip) {
    if (cacheFrame) {
      ibuf = BKE_movieclip_get_ibuf(movieClip, movieClipUser);
    }
    else {
      ibuf = BKE_movieclip_get_ibuf_flag(
          movieClip, movieClipUser, movieClip->flag, MOVIECLIP_CACHE_SKIP);
    }
  }

  /* Always connect the output image. */
  MovieClipOperation *operation = new MovieClipOperation();
  operation->setMovieClip(movieClip);
  operation->setMovieClipUser(movieClipUser);
  operation->setFramenumber(context.getFramenumber());
  operation->setCacheFrame(cacheFrame);

  converter.addOperation(operation);
  converter.mapOutputSocket(outputMovieClip, operation->getOutputSocket());
  converter.addPreview(operation->getOutputSocket());

  MovieClipAlphaOperation *alphaOperation = new MovieClipAlphaOperation();
  alphaOperation->setMovieClip(movieClip);
  alphaOperation->setMovieClipUser(movieClipUser);
  alphaOperation->setFramenumber(context.getFramenumber());
  alphaOperation->setCacheFrame(cacheFrame);

  converter.addOperation(alphaOperation);
  converter.mapOutputSocket(alphaMovieClip, alphaOperation->getOutputSocket());

  MovieTrackingStabilization *stab = &movieClip->tracking.stabilization;
  float loc[2], scale, angle;
  loc[0] = 0.0f;
  loc[1] = 0.0f;
  scale = 1.0f;
  angle = 0.0f;

  if (ibuf) {
    if (stab->flag & TRACKING_2D_STABILIZATION) {
      int clip_framenr = BKE_movieclip_remap_scene_to_clip_frame(movieClip,
                                                                 context.getFramenumber());

      BKE_tracking_stabilization_data_get(
          movieClip, clip_framenr, ibuf->x, ibuf->y, loc, &scale, &angle);
    }
  }

  converter.addOutputValue(offsetXMovieClip, loc[0]);
  converter.addOutputValue(offsetYMovieClip, loc[1]);
  converter.addOutputValue(scaleMovieClip, scale);
  converter.addOutputValue(angleMovieClip, angle);

  if (ibuf) {
    IMB_freeImBuf(ibuf);
  }
}

}  // namespace blender::compositor