kaitai: adjustments and rearrangements for python2/3 compat

1 files changed, 111 insertions, 0 deletions

diff --git a/python/examples/kaitai/avantes_roh60.py b/python/examples/kaitai/avantes_roh60.py
new file mode 100644
index 00000000..6a17acea
--- /dev/null
+++ b/python/examples/kaitai/avantes_roh60.py
@@ -0,0 +1,111 @@
+# This is a generated file! Please edit source .ksy file and use kaitai-struct-compiler to rebuild
+
+from pkg_resources import parse_version
+from .kaitaistruct import __version__ as ks_version, KaitaiStruct, KaitaiStream, BytesIO
+import collections
+
+
+if parse_version(ks_version) < parse_version('0.7'):
+    raise Exception("Incompatible Kaitai Struct Python API: 0.7 or later is required, but you have %s" % (ks_version))
+
+class AvantesRoh60(KaitaiStruct):
+    """Avantes USB spectrometers are supplied with a Windows binary which 
+    generates one ROH and one RCM file when the user clicks "Save
+    experiment". In the version of 6.0, the ROH file contains a header 
+    of 22 four-byte floats, then the spectrum as a float array and a 
+    footer of 3 floats. The first and last pixel numbers are specified in the 
+    header and determine the (length+1) of the spectral data. In the tested 
+    files, the length is (2032-211-1)=1820 pixels, but Kaitai determines this 
+    automatically anyway.
+    
+    The wavelength calibration is stored as a polynomial with coefficients
+    of 'wlintercept', 'wlx1', ... 'wlx4', the argument of which is the
+    (pixel number + 1), as found out by comparing with the original 
+    Avantes converted data files. There is no intensity calibration saved,
+    but it is recommended to do it in your program - the CCD in the spectrometer 
+    is so uneven that one should prepare exact pixel-to-pixel calibration curves 
+    to get reasonable spectral results.
+    
+    The rest of the header floats is not known to the author. Note that the 
+    newer version of Avantes software has a different format, see also
+    https://kr.mathworks.com/examples/matlab/community/20341-reading-spectra-from-avantes-binary-files-demonstration
+    
+    The RCM file contains the user-specified comment, so it may be useful
+    for automatic conversion of data. You may wish to divide the spectra by 
+    the integration time before comparing them.
+    
+    Written and tested by Filip Dominec, 2017-2018
+    """
+    SEQ_FIELDS = ["unknown1", "wlintercept", "wlx1", "wlx2", "wlx3", "wlx4", "unknown2", "ipixfirst", "ipixlast", "unknown3", "spectrum", "integration_ms", "averaging", "pixel_smoothing"]
+    def __init__(self, _io, _parent=None, _root=None):
+        self._io = _io
+        self._parent = _parent
+        self._root = _root if _root else self
+        self._debug = collections.defaultdict(dict)
+
+    def _read(self):
+        self._debug['unknown1']['start'] = self._io.pos()
+        self.unknown1 = self._io.read_f4le()
+        self._debug['unknown1']['end'] = self._io.pos()
+        self._debug['wlintercept']['start'] = self._io.pos()
+        self.wlintercept = self._io.read_f4le()
+        self._debug['wlintercept']['end'] = self._io.pos()
+        self._debug['wlx1']['start'] = self._io.pos()
+        self.wlx1 = self._io.read_f4le()
+        self._debug['wlx1']['end'] = self._io.pos()
+        self._debug['wlx2']['start'] = self._io.pos()
+        self.wlx2 = self._io.read_f4le()
+        self._debug['wlx2']['end'] = self._io.pos()
+        self._debug['wlx3']['start'] = self._io.pos()
+        self.wlx3 = self._io.read_f4le()
+        self._debug['wlx3']['end'] = self._io.pos()
+        self._debug['wlx4']['start'] = self._io.pos()
+        self.wlx4 = self._io.read_f4le()
+        self._debug['wlx4']['end'] = self._io.pos()
+        self._debug['unknown2']['start'] = self._io.pos()
+        self.unknown2 = [None] * (9)
+        for i in range(9):
+            if not 'arr' in self._debug['unknown2']:
+                self._debug['unknown2']['arr'] = []
+            self._debug['unknown2']['arr'].append({'start': self._io.pos()})
+            self.unknown2[i] = self._io.read_f4le()
+            self._debug['unknown2']['arr'][i]['end'] = self._io.pos()
+
+        self._debug['unknown2']['end'] = self._io.pos()
+        self._debug['ipixfirst']['start'] = self._io.pos()
+        self.ipixfirst = self._io.read_f4le()
+        self._debug['ipixfirst']['end'] = self._io.pos()
+        self._debug['ipixlast']['start'] = self._io.pos()
+        self.ipixlast = self._io.read_f4le()
+        self._debug['ipixlast']['end'] = self._io.pos()
+        self._debug['unknown3']['start'] = self._io.pos()
+        self.unknown3 = [None] * (4)
+        for i in range(4):
+            if not 'arr' in self._debug['unknown3']:
+                self._debug['unknown3']['arr'] = []
+            self._debug['unknown3']['arr'].append({'start': self._io.pos()})
+            self.unknown3[i] = self._io.read_f4le()
+            self._debug['unknown3']['arr'][i]['end'] = self._io.pos()
+
+        self._debug['unknown3']['end'] = self._io.pos()
+        self._debug['spectrum']['start'] = self._io.pos()
+        self.spectrum = [None] * (((int(self.ipixlast) - int(self.ipixfirst)) - 1))
+        for i in range(((int(self.ipixlast) - int(self.ipixfirst)) - 1)):
+            if not 'arr' in self._debug['spectrum']:
+                self._debug['spectrum']['arr'] = []
+            self._debug['spectrum']['arr'].append({'start': self._io.pos()})
+            self.spectrum[i] = self._io.read_f4le()
+            self._debug['spectrum']['arr'][i]['end'] = self._io.pos()
+
+        self._debug['spectrum']['end'] = self._io.pos()
+        self._debug['integration_ms']['start'] = self._io.pos()
+        self.integration_ms = self._io.read_f4le()
+        self._debug['integration_ms']['end'] = self._io.pos()
+        self._debug['averaging']['start'] = self._io.pos()
+        self.averaging = self._io.read_f4le()
+        self._debug['averaging']['end'] = self._io.pos()
+        self._debug['pixel_smoothing']['start'] = self._io.pos()
+        self.pixel_smoothing = self._io.read_f4le()
+        self._debug['pixel_smoothing']['end'] = self._io.pos()
+
+