/***

  Olive - Non-Linear Video Editor
  Copyright (C) 2019 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 "output.h"

#include "node/node.h"

NodeOutput::NodeOutput(const QString &id) :
  NodeParam(id)
{
}

NodeParam::Type NodeOutput::type()
{
  return kOutput;
}

NodeParam::DataType NodeOutput::data_type()
{
  return data_type_;
}

void NodeOutput::set_data_type(const NodeParam::DataType &type)
{
  if (data_type_ == type) {
    return;
  }

  data_type_ = type;

  // If this output is connected to other inputs, check if they're compatible with this new data type
  if (IsConnected()) {
    foreach (NodeEdgePtr edge, edges_) {
      if (!AreDataTypesCompatible(this, edge->input())) {
        // FIXME: Possible array out of bounds since this function removes edges while we're iterating through them?
        //        I'm not sure how Qt's `foreach` works.
        DisconnectEdge(edge);
      }
    }
  }
}

QVariant NodeOutput::get_value(const rational& time)
{
  mutex_.lock();

  QVariant v;

  if (time_ != time || !value_caching_) {
    // Update the value
    value_ = parent()->Run(this, time);

    time_ = time;
  }

  v = value_;

  mutex_.unlock();

  return v;
}

void NodeOutput::push_value(const QVariant &v, const rational &time)
{
  value_ = v;
  time_ = time;
}