WallyHackenslacker/NxtAR-cam
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CameraImageMonitor now follows the Producer/Consumer model. Other assorted minor changes.

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Wally Hackenslacker
2013-11-28 15:48:17 -04:30
parent d6227bd300
commit 5910c711d8
5 changed files with 50 additions and 37 deletions
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43
src/ve/ucv/ciens/ccg/nxtcam/camera/CameraImageMonitor.java
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@@ -7,10 +7,12 @@ public class CameraImageMonitor{
private final String CLASS_NAME = CameraImageMonitor.class.getSimpleName();
private byte[] image;
private boolean imgChanged;
private boolean imgProduced;
private boolean imgConsumed;
private CameraImageMonitor(){
imgChanged = false;
imgProduced = false;
imgConsumed = false;
}
private static class SingletonHolder{
@@ -22,33 +24,40 @@ public class CameraImageMonitor{
}
public void setImageData(byte[] image){
Logger.log_d(TAG, CLASS_NAME + ".setImageData() :: Copying new image.");
synchronized(image){
this.image = new byte[image.length];
System.arraycopy(image, 0, this.image, 0, image.length);
imgChanged = true;
image.notifyAll();
if(imgConsumed){
Logger.log_d(TAG, CLASS_NAME + ".setImageData() :: Copying new image.");
synchronized(this.image){
//this.image = new byte[image.length];
//System.arraycopy(image, 0, this.image, 0, image.length);
this.image = image;
imgProduced = true;
imgConsumed = false;
this.image.notifyAll();
}
Logger.log_d(TAG, CLASS_NAME + ".setImageData() :: Data copy finished.");
}else{
Logger.log_d(TAG, CLASS_NAME + ".setImageData() :: Old image still valid, ignoring new image.");
}
Logger.log_d(TAG, CLASS_NAME + ".setImageData() :: Data copy finished.");
}
public byte[] getImageData(){
byte[] returnImg;
Logger.log_d(TAG, CLASS_NAME + ".getImageData() :: Entry point.");
synchronized(image){
while(!imgChanged){
Logger.log_d(TAG, CLASS_NAME + ".getImageData() :: Waiting for new data.");
try{ image.wait(); }catch(InterruptedException ie){}
while(!imgProduced){
Logger.log_d(TAG, CLASS_NAME + ".getImageData() :: Waiting for new image.");
try{ image.wait(); }catch(InterruptedException ie){ }
}
Logger.log_d(TAG, CLASS_NAME + ".getImageData() :: Retrieving new data.");
returnImg = image.clone();
imgChanged = false;
Logger.log_d(TAG, CLASS_NAME + ".getImageData() :: Retrieving new image.");
returnImg = image;
imgProduced = false;
imgConsumed = true;
}
Logger.log_d(TAG, CLASS_NAME + ".getImageData() :: New data retreived.");
Logger.log_d(TAG, CLASS_NAME + ".getImageData() :: New image retrieved.");
return returnImg;
}
public synchronized boolean hasChanged(){
return imgChanged;
return imgProduced;
}
}