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125 lines
3.7 KiB
125 lines
3.7 KiB
import six
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import struct
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import re
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class LabelMap(object):
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"""
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Contains pointers to metadata. This might only be valid for V3 files.
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"""
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def __init__(self, raw_binary_data):
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self._data = raw_binary_data
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self._image_data = {}
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def image_attributes(self):
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return self._get_location(six.b("ImageAttributesLV!"))
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def _get_location(self, label):
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try:
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label_location = self._data.index(label) + len(label)
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return self._parse_data_location(label_location)
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except ValueError:
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return None
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def _parse_data_location(self, label_location):
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location, length = struct.unpack("QQ", self._data[label_location: label_location + 16])
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return location
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@property
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def image_text_info(self):
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return self._get_location(six.b("ImageTextInfoLV!"))
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@property
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def image_metadata(self):
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return self._get_location(six.b("ImageMetadataLV!"))
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@property
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def image_metadata_sequence(self):
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# there is always only one of these, even though it has a pipe followed by a zero, which is how they do indexes
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return self._get_location(six.b("ImageMetadataSeqLV|0!"))
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def get_image_data_location(self, index):
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if not self._image_data:
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regex = re.compile(six.b("""ImageDataSeq\|(\d+)!"""))
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for match in regex.finditer(self._data):
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if match:
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location = self._parse_data_location(match.end())
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self._image_data[int(match.group(1))] = location
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return self._image_data[index]
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@property
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def image_calibration(self):
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return self._get_location(six.b("ImageCalibrationLV|0!"))
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@property
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def image_attributes(self):
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return self._get_location(six.b("ImageAttributesLV!"))
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@property
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def x_data(self):
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return self._get_location(six.b("CustomData|X!"))
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@property
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def y_data(self):
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return self._get_location(six.b("CustomData|Y!"))
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@property
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def z_data(self):
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return self._get_location(six.b("CustomData|Z!"))
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@property
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def roi_metadata(self):
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return self._get_location(six.b("CustomData|RoiMetadata_v1!"))
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@property
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def pfs_status(self):
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return self._get_location(six.b("CustomData|PFS_STATUS!"))
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@property
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def pfs_offset(self):
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return self._get_location(six.b("CustomData|PFS_OFFSET!"))
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@property
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def guid(self):
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return self._get_location(six.b("CustomData|GUIDStore!"))
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@property
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def description(self):
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return self._get_location(six.b("CustomData|CustomDescriptionV1_0!"))
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@property
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def camera_exposure_time(self):
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return self._get_location(six.b("CustomData|Camera_ExposureTime1!"))
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@property
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def camera_temp(self):
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return self._get_location(six.b("CustomData|CameraTemp1!"))
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@property
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def acquisition_times(self):
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return self._get_location(six.b("CustomData|AcqTimesCache!"))
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@property
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def acquisition_times_2(self):
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return self._get_location(six.b("CustomData|AcqTimes2Cache!"))
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@property
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def acquisition_frames(self):
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return self._get_location(six.b("CustomData|AcqFramesCache!"))
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@property
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def lut_data(self):
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return self._get_location(six.b("CustomDataVar|LUTDataV1_0!"))
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@property
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def grabber_settings(self):
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return self._get_location(six.b("CustomDataVar|GrabberCameraSettingsV1_0!"))
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@property
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def custom_data(self):
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return self._get_location(six.b("CustomDataVar|CustomDataV2_0!"))
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@property
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def app_info(self):
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return self._get_location(six.b("CustomDataVar|AppInfo_V1_0!"))
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