Add support for Q8 datalogger

Closes #290 (closed)

Add support for Q8 datalogger by adding all the relevant SOH channels and some corresponding parameters to the database.

Because Q8 and Q330 have a lot of overlapping channels, the current way of detecting data type can cause a lot of Q330 data sets to be detected as Q8 data sets. As a result, this MR changes how data type is detected. Before, the data type is detected by checking for signature channels and exiting early when one is found. With this MR, the possible data types are detected by checking all channels and removing the impossible data types. Afterwards, the user is given the option to choose the data type they want.

(Database updated Jan 8 2025)

q8.db

sohstationviewer/controller/processing.py

@@ -15,6 +15,7 @@ from PySide6.QtWidgets import QTextBrowser, QApplication
 from obspy.io import reftek
 from obspy import UTCDateTime
 
+from sohstationviewer.conf.dbSettings import dbConf
 from sohstationviewer.model.mseed_data.mseed_reader import \
     move_to_next_record
 
@@ -250,9 +251,23 @@ def get_data_type_from_file(path2file: Path,
     """
     file = open(path2file, 'rb')
     chans_in_stream = set()
-
     possible_data_types = set()
 
+    # Handle waveform files, which give no information about the possible data
+    # type. The standard in the industry at the moment of writing is to only
+    # multiplex SOH channels if at all, so we only need to check the first
+    # channel in a file to determine if it is a waveform file.
+    try:
+        chan = get_next_channel_from_mseed_file(file)
+        if dbConf['seisRE'].match(chan):
+            return None
+        file.seek(0)
+    except ValueError:
+        file.close()
+        if reftek.core._is_reftek130(path2file):
+            return {'RT130'}, False
+        return None
+
     while 1:
         is_eof = (file.read(1) == b'')
         if is_eof:
@@ -267,6 +282,15 @@ def get_data_type_from_file(path2file: Path,
                 return {'RT130'}, False
             return None
 
+        # Handle mass-position channels, which give no information about the
+        # possible data type. Mass-position channels are considered SOH
+        # channels, so they can be multiplexed with other SOH channels in the
+        # same file. As a result, unlike the waveform channels, we can't deal
+        # with them at the file level.
+        if chan.startswith('VM'):
+            chans_in_stream.add(chan)
+            continue
+
         if chan in chans_in_stream:
             continue
 
@@ -280,8 +304,16 @@ def get_data_type_from_file(path2file: Path,
             possible_data_types |= all_channels_dict[chan]
 
     file.close()
+
+    # Handle case where mass-position channels are not multiplexed with other
+    # SOH channels. We have to do this because mass-position-only files give
+    # an empty set for the possible data types, which means that any data sets
+    # with these files will be processed as having no data type.
+    if all(chan.startswith('VM') for chan in chans_in_stream):
+        return None
+
     is_multiplex = is_multiplex or (len(chans_in_stream) > 1)
-    return frozenset(possible_data_types), is_multiplex
+    return possible_data_types, is_multiplex
 
 
 def get_next_channel_from_mseed_file(mseed_file: BinaryIO) -> str: