applier.h

/* 
 * Copyright (C) 2006-2013  Music Technology Group - Universitat Pompeu Fabra
 *
 * This file is part of Gaia
 * 
 * Gaia is free software: you can redistribute it and/or modify it under 
 * the terms of the GNU Affero General Public License as published by the Free 
 * Software Foundation (FSF), 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 Affero GNU General Public License
 * version 3 along with this program.  If not, see http://www.gnu.org/licenses/
 */

#ifndef GAIA_APPLIER_H
#define GAIA_APPLIER_H

#include "dataset.h"
#include "factory.h"
#include "transformation.h"
#include "pointlayout.h"
#include "textprogress.h"

namespace gaia2 {

class Applier {
 public:

  Applier(const Transformation& transfo) : _transfo(transfo) {}

  virtual ~Applier() {};

  void checkLayout(const PointLayout& layout) const;

  void checkLayout(const DataSet* dataset) const;

  virtual Point* mapPoint(const Point* p) const = 0;

  virtual DataSet* mapDataSet(const DataSet* dataset) const;

 protected:
  void transferHistory(const DataSet* original, DataSet* destination) const;

  void addPointsNoLayoutCheck(DataSet* dataset, const QVector<Point*>& points) const;

  Transformation _transfo;

};

typedef Factory<QString, Applier, Transformation> ApplierFactory;

void registerAppliers();

} // namespace gaia2


#define MAPDATASET_PREPARE                                        \
  checkLayout(dataset);                                           \
  DataSet* result = new DataSet;                                  \
  result->setName(dataset->name());                               \
                                                                  \
  TextProgress info(dataset->size(),                              \
                    QString("Applying '") + _transfo.analyzerName \
                    + "' transformation [%1/%2] (%3% done)",      \
                    UpdateOnPercent);                             \
  info.setSilent(!gaia2::verbose);                                \
  int npoint = 0;

#define MAPDATASET_LOOP_POINT                                     \
  QVector<Point*> v(dataset->size());                             \
  for (int i=0; i<dataset->size(); i++) {                         \
    info.update(++npoint);                                        \
    const Point* p = dataset->at(i);

#define MAPDATASET_END_LOOP_NO_RETURN                             \
    v[i] = newp;                                                  \
  }                                                               \
  addPointsNoLayoutCheck(result, v);                              \
  transferHistory(dataset, result);


#define MAPDATASET_END_LOOP                                       \
  MAPDATASET_END_LOOP_NO_RETURN;                                  \
  return result;


#endif // GAIA_APPLIER_H