Android Open Source - Spectograph Draw Thread

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License

The source code is released under:

Copyright (c) 2013 Salman aljammaz Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the So...

Java Source Code

package net.x65.spectograph;
/*from   w w w  . ja  va 2s  .c o  m*/
import android.util.Log;
import android.graphics.Canvas;
import java.util.ArrayList;
import android.view.SurfaceHolder;

public class DrawThread extends Thread {
  private static final String TAG = DrawThread.class.getSimpleName();
  private static final int framerate = 30;

  Spectogram view;
  SurfaceHolder surfaceHolder;
  
  DrawThread(Spectogram view, SurfaceHolder surfaceHolder) {
    super();
    
    this.view = view;
    this.surfaceHolder = surfaceHolder;
  }
  
  @Override
  public void run() {
    Log.d(TAG, "Starting draw loop");
    
    while (true) {
      Canvas canvas = null;
      try {
        canvas = surfaceHolder.lockCanvas();
        synchronized (surfaceHolder) {
          // TODO framerate
          view.update();
          view.render(canvas);
        }
      } finally {
        if (canvas != null) {
          surfaceHolder.unlockCanvasAndPost(canvas);
        }
      }
    }
  }
}

Java Source Code List

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