limiting number of consecutive frames

src/main/java/com/elphel/imagej/lwir/LwirReader.java

@@ -189,7 +189,10 @@ public class LwirReader {
 				} catch (Exception e) {
 					LOGGER.error("Something is wrong!");
 				}
-
+				if (dt==null) {
+					System.out.println("n="+n+", i="+i+", dt is NULL! (may need to reduce number of acquire images to "+(n-1));
+				}
+//				System.out.println("n="+n+", i="+i+", dt="+dt);
 				img_seconds[n][i] = Double.parseDouble(dt.substring(dt.lastIndexOf(":")+1));
 				try {
 					img_numbers[n][i] = Integer.parseInt((String) imps[n][i].getProperty("STD_Image_Number"));
@@ -497,6 +500,11 @@ public class LwirReader {
 			calibrate(lrp); // seems to work. test calibration duration and if any images are sent during calibration
 		}
 		int num_frames = lrp.avg_number + lrp.eo_lag + 2 * lrp.max_frame_diff;
+		if (num_frames > lrp.num_frames) {
+			LOGGER.warn("acquire(): Wanted to acquire "+num_frames+", but hard limit is set to "+lrp.num_frames+
+					" TDOD: stop EO compressor after acquisition of the required number of frames") ;
+			num_frames = lrp.num_frames;
+		}
 		ImagePlus [][] imps = readAllMultiple(
 				num_frames,
 //				lrp.lwir_telemetry,

src/main/java/com/elphel/imagej/lwir/LwirReaderParameters.java

@@ -38,6 +38,7 @@ import ij.Prefs;
 public class LwirReaderParameters {
 	private boolean parameters_updated =     false;
 	protected int     avg_number =           4; // number of measurements to average
+	protected int     num_frames =           7; // misses images if high quality large size?
 	protected boolean lwir_ffc =             true;
 	protected boolean avg_all =              true;
 	protected String  lwir_ip =              "192.168.0.36";
@@ -84,6 +85,9 @@ public class LwirReaderParameters {
 
 
 	// --- interface methods
+	public int getNumFrames() {
+		return num_frames;
+	}
 	public int getLwirChn0 () {
 		return lwir_chn0;
 	}
@@ -113,6 +117,7 @@ public class LwirReaderParameters {
 	}
 	public void setProperties(String prefix,Properties properties){
 		properties.setProperty(prefix+"avg_number",          this.avg_number+"");
+		properties.setProperty(prefix+"num_frames",          this.num_frames+"");
 		properties.setProperty(prefix+"lwir_ffc",            this.lwir_ffc+"");
 		properties.setProperty(prefix+"avg_all",             this.avg_all+"");
 		properties.setProperty(prefix+"lwir_ip",             this.lwir_ip+"");
@@ -158,6 +163,8 @@ public class LwirReaderParameters {
 		if (properties.getProperty(prefix+"vnir_lag")!=null)            this.eo_lag=Integer.parseInt(properties.getProperty(prefix+"vnir_lag")); // old version
 
 		if (properties.getProperty(prefix+"avg_number")!=null)          this.avg_number=Integer.parseInt(properties.getProperty(prefix+"avg_number"));
+		if (properties.getProperty(prefix+"num_frames")!=null)          this.num_frames=Integer.parseInt(properties.getProperty(prefix+"num_frames"));
+
 		if (properties.getProperty(prefix+"lwir_ffc")!=null)            this.lwir_ffc= Boolean.parseBoolean(properties.getProperty(prefix+"lwir_ffc"));
 		if (properties.getProperty(prefix+"avg_all")!=null)             this.avg_all= Boolean.parseBoolean(properties.getProperty(prefix+"avg_all"));
 		if (properties.getProperty(prefix+"lwir_ip")!=null)             this.lwir_ip=      properties.getProperty(prefix+"lwir_ip");
@@ -190,6 +197,7 @@ public class LwirReaderParameters {
 	public LwirReaderParameters clone() { //  throws CloneNotSupportedException {
 		LwirReaderParameters lrp =  new LwirReaderParameters();
 		lrp.avg_number=             this.avg_number;
+		lrp.num_frames=             this.num_frames;
 		lrp.lwir_ffc=               this.lwir_ffc;
 		lrp.avg_all=                this.avg_all;
 		lrp.lwir_ip=                this.lwir_ip;
@@ -292,6 +300,8 @@ public class LwirReaderParameters {
 
 	public void dialogQuestions(GenericJTabbedDialog gd) {
 		gd.addNumericField("Number to average",this.avg_number,           0,3,"","Number of acquired consecutive images to average");
+		gd.addNumericField("Number of sets to acquire",this.num_frames,   0,3,"","Total number, may be limited by EO quality/frame size (last will be missed/null)");
+		
 		gd.addCheckbox    ("Run FFC",       this.lwir_ffc, "Perform calibration before each measurements to average (takes ~1.6 sec, 15 frames)");
 		gd.addCheckbox    ("Average all",   this.avg_all, "Average all simultaneously acquired images (unchecked - only requested number to average)");
 		gd.addStringField ("LWIR IP",       this.lwir_ip, 20, "LWIR camera IP address");
@@ -322,6 +332,7 @@ public class LwirReaderParameters {
 
 	public void dialogAnswers(GenericJTabbedDialog gd) {
 		this.avg_number =        (int) gd.getNextNumber();
+		this.num_frames =        (int) gd.getNextNumber();
 		this.lwir_ffc =                gd.getNextBoolean();
 		this.avg_all =                 gd.getNextBoolean();
 		this.lwir_ip =                 gd.getNextString();