Author: [log in to unmask]
Date: Sun Mar 29 11:06:07 2015
New Revision: 2620
Log:
Added methods to extract the APV ID from the data and get the physical channel number.
Modified:
java/trunk/evio/src/main/java/org/hps/evio/SvtEvioUtils.java
Modified: java/trunk/evio/src/main/java/org/hps/evio/SvtEvioUtils.java
=============================================================================
--- java/trunk/evio/src/main/java/org/hps/evio/SvtEvioUtils.java (original)
+++ java/trunk/evio/src/main/java/org/hps/evio/SvtEvioUtils.java Sun Mar 29 11:06:07 2015
@@ -14,6 +14,10 @@
private static final int TOTAL_SAMPLES = 6;
public static final int SAMPLE_MASK = 0xFFFF;
+
+ // TODO: Move these to constants class
+ public static final int APV25_PER_HYBRID = 5;
+ public static final int CHANNELS_PER_APV25 = 128;
//--- Test Run ---//
private static final int TEST_RUN_SAMPLE_HEADER_INDEX = 0;
@@ -25,6 +29,7 @@
private static final int ENG_RUN_SAMPLE_HEADER_INDEX = 3;
private static final int FEB_MASK = 0xFF;
private static final int FEB_HYBRID_MASK = 0x3;
+ private static final int ENG_RUN_APV_MASK = 0x7;
private static final int ENG_RUN_CHANNEL_MASK = 0x7F;
/**
@@ -83,6 +88,16 @@
}
/**
+ * Extract and return the APV ID associated with the samples.
+ *
+ * @param data : sample block of data
+ * @return An APV ID in the range of 0-4
+ */
+ public static int getApv(int[] data) {
+ return (data[ENG_RUN_SAMPLE_HEADER_INDEX] >>> 23) & ENG_RUN_APV_MASK;
+ }
+
+ /**
* Extract and return the channel number associated with the samples
*
* @param data : sample block of data
@@ -91,6 +106,32 @@
public static int getChannelNumber(int[] data) {
return (data[ENG_RUN_SAMPLE_HEADER_INDEX] >>> 16) & ENG_RUN_CHANNEL_MASK;
}
+
+ /**
+ * Extract the physical channel number associated with the samples
+ *
+ * @param data : sample block of data
+ * @return A channel number in the range 0-639
+ * @throws RuntimeException if the physical channel number is out of range
+ */
+ public static int getPhysicalChannelNumber(int[] data) {
+
+ // Extract the channel number from the data
+ int channel = SvtEvioUtils.getChannelNumber(data);
+
+ // Extract the APV ID from the data
+ int apv = SvtEvioUtils.getApv(data);
+
+ // Get the physical channel number
+ int physicalChannel = (APV25_PER_HYBRID - apv - 1) * CHANNELS_PER_APV25 + channel;
+
+ // Check that the physical channel number is valid. If not, throw an exception
+ if (physicalChannel < 0 || physicalChannel >= APV25_PER_HYBRID * CHANNELS_PER_APV25) {
+ throw new RuntimeException("Physical channel " + physicalChannel + " is outside of valid range!");
+ }
+ return physicalChannel;
+ }
+
/**
* Extract and return the nth SVT sample.
