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camera.close() should be in a finally block to make sure that we don't

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run out of resources because of failed camera initializations
This commit is contained in:
Fabio Manganiello 2019-08-25 16:51:03 +02:00
parent 69a03fa025
commit b9360cf2c5
1 changed files with 42 additions and 34 deletions
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76
platypush/plugins/camera/pi.py
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@ -124,26 +124,30 @@ class CameraPiPlugin(CameraPlugin):
"""
camera = self._get_camera(**opts)
image_file = os.path.abspath(os.path.expanduser(image_file))
camera = None
if preview:
camera.start_preview()
try:
camera = self._get_camera(**opts)
image_file = os.path.abspath(os.path.expanduser(image_file))
if warmup_time:
time.sleep(warmup_time)
if preview:
camera.start_preview()
capture_opts = {}
if resize:
capture_opts['resize'] = tuple(resize)
if warmup_time:
time.sleep(warmup_time)
camera.capture(image_file, **capture_opts)
capture_opts = {}
if resize:
capture_opts['resize'] = tuple(resize)
if preview:
camera.stop_preview()
camera.capture(image_file, **capture_opts)
camera.close()
return {'image_file': image_file}
if preview:
camera.stop_preview()
return {'image_file': image_file}
finally:
if camera:
camera.close()
@action
def capture_sequence(self, n_images, directory, name_format='image_%04d.jpg', preview=False, warmup_time=2,
@ -179,33 +183,37 @@ class CameraPiPlugin(CameraPlugin):
"""
camera = self._get_camera(**opts)
directory = os.path.abspath(os.path.expanduser(directory))
camera = None
if preview:
camera.start_preview()
try:
camera = self._get_camera(**opts)
directory = os.path.abspath(os.path.expanduser(directory))
if warmup_time:
time.sleep(warmup_time)
camera.exposure_mode = 'off'
if preview:
camera.start_preview()
camera.shutter_speed = camera.exposure_speed
g = camera.awb_gains
camera.awb_mode = 'off'
camera.awb_gains = g
capture_opts = {}
if warmup_time:
time.sleep(warmup_time)
camera.exposure_mode = 'off'
if resize:
capture_opts['resize'] = tuple(resize)
camera.shutter_speed = camera.exposure_speed
g = camera.awb_gains
camera.awb_mode = 'off'
camera.awb_gains = g
capture_opts = {}
images = [os.path.join(directory, name_format % (i+1)) for i in range(0, n_images)]
camera.capture_sequence(images, **capture_opts)
if resize:
capture_opts['resize'] = tuple(resize)
if preview:
camera.stop_preview()
images = [os.path.join(directory, name_format % (i+1)) for i in range(0, n_images)]
camera.capture_sequence(images, **capture_opts)
camera.close()
return {'image_files': images}
if preview:
camera.stop_preview()
return {'image_files': images}
finally:
camera.close()
@action
def start_time_lapse(self, directory, n_images=None, interval=0, warmup_time=2,