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Add support for BioCAM files recorded with BrainWave 6 #1882

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Add support for BioCAM files recorded with BrainWave 6 #1882

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37 changes: 27 additions & 10 deletions neo/rawio/biocamrawio.py
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Original file line number Diff line number Diff line change
Expand Up @@ -267,22 +267,39 @@ def open_biocam_file_header(filename) -> dict:
)
else: # brw v4.x
# Read recording variables
experiment_settings = json.JSONDecoder().decode(rf["ExperimentSettings"][0].decode())
max_uv = experiment_settings["ValueConverter"]["MaxAnalogValue"]
min_uv = experiment_settings["ValueConverter"]["MinAnalogValue"]
max_digital = experiment_settings["ValueConverter"]["MaxDigitalValue"]
min_digital = experiment_settings["ValueConverter"]["MinDigitalValue"]
scale_factor = experiment_settings["ValueConverter"]["ScaleFactor"]
sampling_rate = experiment_settings["TimeConverter"]["FrameRate"]
num_frames = rf["TOC"][-1, -1]

if "ExperimentSettings" in rf:
experiment_settings = json.JSONDecoder().decode(rf["ExperimentSettings"][0].decode())
max_uv = experiment_settings["ValueConverter"]["MaxAnalogValue"]
min_uv = experiment_settings["ValueConverter"]["MinAnalogValue"]
max_digital = experiment_settings["ValueConverter"]["MaxDigitalValue"]
min_digital = experiment_settings["ValueConverter"]["MinDigitalValue"]
scale_factor = experiment_settings["ValueConverter"]["ScaleFactor"]
sampling_rate = experiment_settings["TimeConverter"]["FrameRate"]
elif "ExperimentInfo" in rf:
experiment_info = json.JSONDecoder().decode(rf["ExperimentInfo"][0].decode())
signal_converter = experiment_info["SignalConverter"]["DigitalToAnalogConverter"]
max_uv = signal_converter["MaxAnalogValueMicroVolt"]
min_uv = signal_converter["MinAnalogValueMicroVolt"]
max_digital = signal_converter["MaxDigitalValue"]
min_digital = signal_converter["MinDigitalValue"]
scale_factor = 1.0
sampling_rate = experiment_info["SignalConverter"]["SampleToTimeConverter"]["FrameRateHertz"]

num_frames = rf["TOC"][-1, -1]
num_channels = None
well_ID = None
for well_ID in rf:
if well_ID.startswith("Well_"):
num_channels = len(rf[well_ID]["StoredChIdxs"])
if "StoredChIdxs" in rf[well_ID]:
num_channels = len(rf[well_ID]["StoredChIdxs"])
elif "NoisePlateElIdxs" in rf[well_ID]:
num_channels = max(rf[well_ID]["NoisePlateElIdxs"]) + 1
else:
# Fallback: assume num_channels from TOC and Raw
num_channels = len(rf[well_ID]["Raw"]) // num_frames
if "Raw" in rf[well_ID]:
if len(rf[well_ID]["Raw"]) % num_channels:
if len(rf[well_ID]["Raw"]) // num_channels * num_channels != len(rf[well_ID]["Raw"]):
raise NeoReadWriteError(
f"Length of raw data array is not multiple of channel number in {well_ID}"
)
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