Method step

app/src/API/Handlers/MDF4PlayerHandler.cpp:190–214

* @brief Step delta frames forward (or backward if negative; default 1) */

 * @brief Step delta frames forward (or backward if negative; default 1)
 */
API::CommandResponse API::Handlers::MDF4PlayerHandler::step(const QString& id,
                                                            const QJsonObject& params)
{
  const int delta =
    params.contains(QStringLiteral("delta")) ? params.value(QStringLiteral("delta")).toInt() : 1;

  auto& player = MDF4::Player::instance();
  if (delta == 0) {
    QJsonObject result;
    result[QStringLiteral("framePosition")] = player.framePosition();
    return CommandResponse::makeSuccess(id, result);
  }

  const int absDelta = std::abs(delta);
  const bool forward = delta > 0;
  for (int i = 0; i < absDelta; ++i)
    if (forward)
      player.nextFrame();
    else
      player.previousFrame();

  QJsonObject result;
  result[QStringLiteral("framePosition")] = player.framePosition();
  return CommandResponse::makeSuccess(id, result);
}

/**
 * @brief Seek to position