def Camera_List():
'''
Thin wrapper around list_devices to improve formatting.
'''
class Cam(object):
def __init__(self, d):
self.device = d
@property
def name(self):
return self.device.friendlyName
@property
def src_id(self):
return self.device.symbolicName
# TODO: property bus_info
devices = vi.DeviceList()
_getVideoInputInstance().getListOfDevices(devices)
cam_list = []
for d in devices:
cam_list.append(Cam(d))
return cam_list
def device_list():
devices = vi.DeviceList()
_getVideoInputInstance().getListOfDevices(devices)
cam_list = []
for d in devices:
cam_list.append({'name':d.friendlyName,'uid':d.symbolicName})
return cam_list
def Camera_List():
'''
Thin wrapper around list_devices to improve formatting.
'''
devices = vi.DeviceList()
_getVideoInputInstance().getListOfDevices(devices)
cam_list = []
for d in devices:
cam_list.append(Cam(d))
return cam_list
def _init(self, uid, size=(640,480), fps=None, timebase=None):
devices = vi.DeviceList()
for cam in _getVideoInputInstance().getListOfDevices(devices):
if cam.symbolicName == uid:
break
if cam.symbolicName != uid:
raise CameraCaptureError("uid for camera not found.")
if not len(size) == 2:
msg = ERR_INIT_FAIL + "Parameter 'size' must have length 2."
logger.error(msg)
raise CameraCaptureError(msg)
# setting up device
self.device = cam.device
self.deviceSettings = vi.DeviceSettings()
self.deviceSettings.symbolicLink = self.device.symbolicName
self.deviceSettings.indexStream = 0
self.deviceSettings.indexMediaType = 0
self.captureSettings = vi.CaptureSettings()
self.captureSettings.readMode = vi.ReadMode.SYNC
self.captureSettings.videoFormat = vi.CaptureVideoFormat.RGB32
self.stream = self.device.listStream[self.deviceSettings.indexStream]
# collecting additional information
if timebase == None:
logger.debug("Capture will run with default system timebase")
self.timebase = 0
else:
logger.debug("Capture will run with app wide adjustable timebase")
self.timebase = timebase
self.width = size[0]
self.height = size[1]
self.preferred_fps = fps
self._initFrameRates()
self._initMediaTypeId()
self.context = _getVideoInputInstance()
while True:
res = self.context.setupDevice(self.deviceSettings, self.captureSettings)
if res != vi.ResultCode.OK:
self._failed_inits += 1
msg = ERR_INIT_FAIL + "Error code: %d" %(res)
if self._failed_inits < MAX_RETRY_INIT_CAMERA:
logger.error("Retry initializing camera: {0}/{1}: ".format(self._failed_inits, MAX_RETRY_INIT_CAMERA) + msg)
else:
logger.error(msg)
raise CameraCaptureError(msg)
sleep(1)
else:
break
# creating frame buffer and initializing capture settings
frame = np.empty((self.actual_height * self.actual_width * 4), dtype=np.uint8)
self.readSetting = vi.ReadSetting()
self.readSetting.symbolicLink = self.deviceSettings.symbolicLink
self.readSetting.setNumpyArray(frame)
frame.shape = (self.actual_height, self.actual_width, -1)
self._frame = frame
logger.debug("Successfully set up device: %s @ %dx%dpx %dfps (mediatype %d)" %(self.name, self.actual_height, self.actual_width, self.frame_rate, self.deviceSettings.indexMediaType))
self._is_initialized = True
self._failed_inits = 0
import videoInput as vi
import numpy as np
print vi.VERSION
print "LOADED VIDEOINPUT LIB"
vin = vi.videoInput_getInstance()
assert isinstance(vin, vi.videoInput)
devices = vi.DeviceList()
vin.getListOfDevices(devices)
for d in devices:
assert isinstance(d, vi.Device)
print d.friendlyName, d.symbolicName
dev = d
dev = devices[1]
assert isinstance(dev, vi.Device)
print "LOADED CAPTURE DEVICES"
deviceSettings = vi.DeviceSettings()
deviceSettings.symbolicLink = dev.symbolicName
deviceSettings.indexStream = 0
deviceSettings.indexMediaType = 195
captureSettings = vi.CaptureSettings()
captureSettings.readMode = vi.ReadMode.SYNC
captureSettings.videoFormat = vi.CaptureVideoFormat.RGB24
stream = dev.listStream[0]
assert isinstance(stream, vi.Stream)
mediaType = stream.listMediaType[195]