Android Open Source - Operation-Valkyrie Filter Manager

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License

The source code is released under:

Terms and conditions Preamble: This Agreement, signed on Jun 10, 2012 [hereinafter: Effective Date] governs the relationship between the Enduser, a private person, (hereinafter: Licensee) and Paul N...

Java Source Code

package valkyrie.filter;
/*w w  w .j av a 2s .c  o m*/
import java.util.ArrayList;

import valkyrie.filter.nofilter.NoFilter;
import valkyrie.ui.LayoutManager;
import valkyrie.ui.preview.CameraPreviewViewCV;

import android.content.Context;
import android.util.Log;

/**
 * 
 * COPYRIGHT: Paul Neuhold, Laurenz Theuerkauf, Alexander Ritz, Jakob Schweighofer, Milo Tischler
 * ? Milo Tischler, Jakob Schweighofer, Alexander Ritz, Paul Neuhold, Laurenz Theuerkauf
 * 
 */

/**
 * Manages the various filters and initializes the filters
 */
public class FilterManager {
  private static final String TAG = "FilterManager";

  private Context context = null;
  private CameraPreviewViewCV cameraPreview = null;
  private IFilter activeFilter = new NoFilter();
  private ArrayList<IFilter> filters = new ArrayList<IFilter>();

  /**
   * Setup the filters by their names from the filterArray
   * 
   * @param Context context
   * @param Integer filterArray
   * @param CameraPreviewViewCV cameraPreview
   */
  public FilterManager(Context context, Integer filterArray, CameraPreviewViewCV cameraPreview) {
    Log.i(TAG, "Initialized opencv camera");

    this.context = context;
    this.cameraPreview = cameraPreview;

    this.filters.clear();

    String[] filterNames = this.context.getResources().getStringArray(filterArray);

    for (String filterName : filterNames) {
      IFilter filter = null;

      try {
        filter = (IFilter) Class.forName(filterName).newInstance();
      } catch (IllegalAccessException e) {
        Log.e(TAG, e.getMessage());
      } catch (InstantiationException e) {
        Log.e(TAG, e.getMessage());
      } catch (ClassNotFoundException e) {
        Log.e(TAG, e.getMessage());
      } finally {
        if (filter != null) {
          filter.setup(new FilterInternalStorage(filter, context), new FilterAssets(filter, context),
              this.isFirstRun());

          Log.i(TAG, "Load and setup filter: " + filter.getClass().getName());

          this.filters.add(filter);
        }
      }
    }
  }

  /**
   * Sets the active filter to the given one. Also informs the cameraPreview and the LayoutManager
   * 
   * @param IFilter filter
   */
  public void setActiveFilter(IFilter filter) {
    for (IFilter storedFilter : this.filters) {
      if (filter.getClass().getName().equals(storedFilter.getClass().getName()))  {
        Log.i(TAG, "Successfully changed active filter to: " + storedFilter.getClass().getName());
        this.activeFilter = storedFilter;

        this.cameraPreview.setFilter(this.activeFilter);
        
        // notify UI about filter change
        LayoutManager.getInstance().notifyUI(this.activeFilter);
      }
    }
  }

  /**
   * Returns the active filter
   * 
   * @return IFilter
   */
  public IFilter getActiveFilter() {  
    return this.activeFilter;
  }

  /**
   * Returns the list of all filters
   * 
   * @return ArrayList<IFilter>
   */
  public ArrayList<IFilter> getFilterList() {
    return this.filters;
  }

  private Boolean isFirstRun() {
    // TODO: implement via shared preferences for filter setup methode
    return true;
  }
}

Java Source Code List

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