gstlal: add phase and datavalid tags

gstlal/lib/gstlal/gstlal_tags.c

 /*
- * Copyright (C) 2008,2011,2013,2014  Kipp Cannon, Chad Hanna
+ * Copyright (C) 2008,2011,2013--2015  Kipp Cannon, Chad Hanna
  * Copyrigth (C) 2010  Leo Singer
  *
  * This program is free software; you can redistribute it and/or modify
@@ -59,6 +59,8 @@ static gpointer register_tags(gpointer unused)
 	gst_tag_register(GSTLAL_TAG_CHANNEL_NAME, GST_TAG_FLAG_META, G_TYPE_STRING, "channel name", "The name of this channel, e.g., \"LSC-STRAIN\"", gst_tag_merge_strings_with_comma);
 	gst_tag_register(GSTLAL_TAG_BIAS, GST_TAG_FLAG_META, G_TYPE_FLOAT, "bias", "DC bias on channel:  units @ count = 0.", NULL);
 	gst_tag_register(GSTLAL_TAG_SLOPE, GST_TAG_FLAG_META, G_TYPE_FLOAT, "slope", "ADC calibration:  units/count.", NULL);
+	gst_tag_register(GSTLAL_TAG_PHASE, GST_TAG_FLAG_META, G_TYPE_FLOAT, "phase", "ADC heterodyne phase calibration.", NULL);
+	gst_tag_register(GSTLAL_TAG_DATAVALID, GST_TAG_FLAG_META, G_TYPE_UINT, "datavalid", "ADC data valid flag.", NULL);
 	gst_tag_register(GSTLAL_TAG_UNITS, GST_TAG_FLAG_META, G_TYPE_STRING, "units", "The units for this channel (as encoded by LAL), e.g., \"strain\".", NULL);
 	return NULL;
 }

gstlal/lib/gstlal/gstlal_tags.h

 /*
- * Copyright (C) 2000,2001,2008--2011,2013,2014  Kipp C. Cannon
+ * Copyright (C) 2000,2001,2008--2011,2013--2015  Kipp C. Cannon
  * Copyrigth (C) 2010  Leo Singer
  *
  *  This program is free software; you can redistribute it and/or modify
@@ -69,6 +69,27 @@ G_BEGIN_DECLS
 #define GSTLAL_TAG_SLOPE "adc-slope"
 
 
+/**
+ * GSTLAL_TAG_PHASE:
+ *
+ * Phase (in radian) of heterodyning signal at start of dataset.
+ */
+
+
+#define GSTLAL_TAG_PHASE "adc-phase"
+
+
+/**
+ * GSTLAL_TAG_DATAVALID:
+ *
+ * Data valid flag:  dataValid = 0 -> ADC data valid; dataValid != 0 -> ADC
+ * data suspect/not valid.
+ */
+
+
+#define GSTLAL_TAG_DATAVALID "adc-datavalid"
+
+
 /**
  * GSTLAL_TAG_UNITS:
  *