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Basic support for multiple Hailo models #1140

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merged 1 commit into from
Oct 24, 2024
Merged

Basic support for multiple Hailo models #1140

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12 changes: 10 additions & 2 deletions picamera2/devices/hailo/hailo.py
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Original file line number Diff line number Diff line change
Expand Up @@ -6,6 +6,9 @@


class Hailo:
TARGET = None
TARGET_REF_COUNT = 0

def __init__(self, hef_path, batch_size=None, output_type='FLOAT32'):
"""
Initialize the HailoAsyncInference class with the provided HEF model file path.
Expand All @@ -20,7 +23,10 @@ def __init__(self, hef_path, batch_size=None, output_type='FLOAT32'):

self.batch_size = batch_size
self.hef = HEF(hef_path)
self.target = VDevice(params)
if Hailo.TARGET is None:
Hailo.TARGET = VDevice(params)
Hailo.TARGET_REF_COUNT += 1
self.target = Hailo.TARGET
self.infer_model = self.target.create_infer_model(hef_path)
self.infer_model.set_batch_size(1 if batch_size is None else batch_size)
self._set_input_output(output_type)
Expand Down Expand Up @@ -175,4 +181,6 @@ def _create_bindings(self):
def close(self):
"""Release the Hailo device."""
del self.configured_infer_model
self.target.release()
Hailo.TARGET_REF_COUNT -= 1
if Hailo.TARGET_REF_COUNT == 0:
self.target.release()
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