/** * Copyright 2011 JogAmp Community. All rights reserved. * * Redistribution and use in source and binary forms, with or without modification, are * permitted provided that the following conditions are met: * * 1. Redistributions of source code must retain the above copyright notice, this list of * conditions and the following disclaimer. * * 2. Redistributions in binary form must reproduce the above copyright notice, this list * of conditions and the following disclaimer in the documentation and/or other materials * provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY JogAmp Community ``AS IS'' AND ANY EXPRESS OR IMPLIED * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JogAmp Community OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * * The views and conclusions contained in the software and documentation are those of the * authors and should not be interpreted as representing official policies, either expressed * or implied, of JogAmp Community. */ package jogamp.opengl; import java.io.PrintStream; import java.util.concurrent.TimeUnit; import javax.media.opengl.FPSCounter; /** * Default implementation of FPSCounter to be used for FPSCounter implementing renderer. */ public class FPSCounterImpl implements FPSCounter { private int fpsUpdateFramesInterval; private PrintStream fpsOutputStream ; private long fpsStartTime, fpsLastUpdateTime, fpsLastPeriod, fpsTotalDuration; private int fpsTotalFrames; private float fpsLast, fpsTotal; /** Creates a disabled instance */ public FPSCounterImpl() { setUpdateFPSFrames(0, null); } /** * Increases total frame count and updates values if feature is enabled and * update interval is reached.<br> * * Shall be called by actual FPSCounter implementing renderer, after display a new frame. * */ public final synchronized void tickFPS() { fpsTotalFrames++; if(fpsUpdateFramesInterval>0 && fpsTotalFrames%fpsUpdateFramesInterval == 0) { final long now = TimeUnit.NANOSECONDS.toMillis(System.nanoTime()); fpsLastPeriod = now - fpsLastUpdateTime; fpsLastPeriod = Math.max(fpsLastPeriod, 1); // div 0 fpsLast = ( (float)fpsUpdateFramesInterval * 1000f ) / ( (float) fpsLastPeriod ) ; fpsTotalDuration = now - fpsStartTime; fpsTotalDuration = Math.max(fpsTotalDuration, 1); // div 0 fpsTotal= ( (float)fpsTotalFrames * 1000f ) / ( (float) fpsTotalDuration ) ; if(null != fpsOutputStream) { fpsOutputStream.println(toString()); } fpsLastUpdateTime = now; } } public StringBuilder toString(StringBuilder sb) { if(null==sb) { sb = new StringBuilder(); } String fpsLastS = String.valueOf(fpsLast); fpsLastS = fpsLastS.substring(0, fpsLastS.indexOf('.') + 2); String fpsTotalS = String.valueOf(fpsTotal); fpsTotalS = fpsTotalS.substring(0, fpsTotalS.indexOf('.') + 2); sb.append(fpsTotalDuration/1000 +" s: "+ fpsUpdateFramesInterval+" f / "+ fpsLastPeriod+" ms, " + fpsLastS+" fps, "+ fpsLastPeriod/fpsUpdateFramesInterval+" ms/f; "+ "total: "+ fpsTotalFrames+" f, "+ fpsTotalS+ " fps, "+ fpsTotalDuration/fpsTotalFrames+" ms/f"); return sb; } public String toString() { return toString(null).toString(); } public final synchronized void setUpdateFPSFrames(int frames, PrintStream out) { fpsUpdateFramesInterval = frames; fpsOutputStream = out; resetFPSCounter(); } public final synchronized void resetFPSCounter() { fpsStartTime = TimeUnit.NANOSECONDS.toMillis(System.nanoTime()); // overwrite startTime to real init one fpsLastUpdateTime = fpsStartTime; fpsLastPeriod = 0; fpsTotalFrames = 0; fpsLast = 0f; fpsTotal = 0f; fpsLastPeriod = 0; fpsTotalDuration=0; } public final synchronized int getUpdateFPSFrames() { return fpsUpdateFramesInterval; } public final synchronized long getFPSStartTime() { return fpsStartTime; } public final synchronized long getLastFPSUpdateTime() { return fpsLastUpdateTime; } public final synchronized long getLastFPSPeriod() { return fpsLastPeriod; } public final synchronized float getLastFPS() { return fpsLast; } public final synchronized int getTotalFPSFrames() { return fpsTotalFrames; } public final synchronized long getTotalFPSDuration() { return fpsTotalDuration; } public final synchronized float getTotalFPS() { return fpsTotal; } }