def __init__(self, camera_name = None, **kwds):
super().__init__(**kwds)
self.buffer_len = None
self.data_buffer = None
self.frame_bytes = None
self.frame_x = None
self.frame_y = None
self.n_captured = pvc.uns32(0) # No more than 4 billion frames in a single capture..
self.n_processed = 0
# Open camera.
c_name = ctypes.c_char_p(camera_name.encode())
self.hcam = pvc.int16(0)
check(pvcam.pl_cam_open(c_name,
ctypes.byref(self.hcam),
pvc.int16(0)),
"pl_cam_open")
# Register our EOF callback. This callback is supposed to increment
# self.n_captured every time the camera acquires a new frame.
#
check(pvcam.pl_cam_register_callback_ex3(self.hcam,
pvc.int32(pvc.PL_CALLBACK_EOF),
eof_callback,
ctypes.byref(self.n_captured)),
"pl_cam_register_callback_ex3")
def getParameterEnum(self, pname, pindex = None):
"""
Returns value and description for an enumerated type.
"""
pid = self.nameToID(pname)
ptype = self.getParameterType(pid)
pvalue = pvc.int32()
# Verify that this is an enumerated type.
if (ptype != pvc.TYPE_ENUM):
raise PVCAMException("getParameterEnum: " + str(ptype) + " is not an enumerated type.")
# Use current index if not specified.
if pindex is None:
cindex = pvc.uns32(pvc.ATTR_CURRENT)
else:
cindex = pvc.uns32(pindex)
# Create string to store results.
maxlen = 100
cstring = ctypes.c_char_p((' ' * maxlen).encode())
check(pvcam.pl_get_enum_param(self.hcam,
pid,
cindex,
ctypes.byref(pvalue),
cstring,
pvc.uns32(maxlen)),
"pl_get_enum_param")
return [pvalue.value, cstring.value.decode()]
def __init__(self, camera_name = None, **kwds):
super().__init__(**kwds)
self.buffer_len = None
self.data_buffer = None
self.frame_bytes = None
self.frame_x = None
self.frame_y = None
self.n_captured = pvc.uns32(0) # No more than 4 billion frames in a single capture..
self.n_processed = 0
# Open camera.
c_name = ctypes.c_char_p(camera_name.encode())
self.hcam = pvc.int16(0)
check(pvcam.pl_cam_open(c_name,
ctypes.byref(self.hcam),
pvc.int16(0)),
"pl_cam_open")
# Register our EOF callback. This callback is supposed to increment
# self.n_captured every time the camera acquires a new frame.
#
check(pvcam.pl_cam_register_callback_ex3(self.hcam,
pvc.int32(pvc.PL_CALLBACK_EOF),
eof_callback,
ctypes.byref(self.n_captured)),
"pl_cam_register_callback_ex3")
def getParameterEnum(self, pname, pindex = None):
"""
Returns value and description for an enumerated type.
"""
pid = self.nameToID(pname)
ptype = self.getParameterType(pid)
pvalue = pvc.int32()
# Verify that this is an enumerated type.
if (ptype != pvc.TYPE_ENUM):
raise PVCAMException("getParameterEnum: " + str(ptype) + " is not an enumerated type.")
# Use current index if not specified.
if pindex is None:
cindex = pvc.uns32(pvc.ATTR_CURRENT)
else:
cindex = pvc.uns32(pindex)
# Create string to store results.
maxlen = 100
cstring = ctypes.c_char_p((' ' * maxlen).encode())
check(pvcam.pl_get_enum_param(self.hcam,
pid,
cindex,
ctypes.byref(pvalue),
cstring,
pvc.uns32(maxlen)),
"pl_get_enum_param")
return [pvalue.value, cstring.value.decode()]
def getTypeInstance(self, ptype):
"""
Return a ctypes instance of ptype.
"""
if (ptype == pvc.TYPE_INT16):
return pvc.int16()
elif (ptype == pvc.TYPE_INT32):
return pvc.int32()
elif (ptype == pvc.TYPE_FLT64):
return pvc.flt64()
elif (ptype == pvc.TYPE_UNS8):
return pvc.uns8()
elif (ptype == pvc.TYPE_UNS16):
return pvc.uns16()
elif (ptype == pvc.TYPE_UNS32):
return pvc.uns32()
elif (ptype == pvc.TYPE_UNS64):
return pvc.ulong64()
elif (ptype == pvc.TYPE_ENUM):
return pvc.int32()
elif (ptype == pvc.TYPE_BOOLEAN):
return pvc.rs_bool()
elif (ptype == pvc.TYPE_INT8):
return pvc.int8()
def getTypeInstance(self, ptype):
"""
Return a ctypes instance of ptype.
"""
if (ptype == pvc.TYPE_INT16):
return pvc.int16()
elif (ptype == pvc.TYPE_INT32):
return pvc.int32()
elif (ptype == pvc.TYPE_FLT64):
return pvc.flt64()
elif (ptype == pvc.TYPE_UNS8):
return pvc.uns8()
elif (ptype == pvc.TYPE_UNS16):
return pvc.uns16()
elif (ptype == pvc.TYPE_UNS32):
return pvc.uns32()
elif (ptype == pvc.TYPE_UNS64):
return pvc.ulong64()
elif (ptype == pvc.TYPE_ENUM):
return pvc.int32()
elif (ptype == pvc.TYPE_BOOLEAN):
return pvc.rs_bool()
elif (ptype == pvc.TYPE_INT8):
return pvc.int8()
def shutdown(self):
check(pvcam.pl_cam_deregister_callback(self.hcam,
pvc.int32(pvc.PL_CALLBACK_EOF)),
"pl_cam_deregister_callback")
check(pvcam.pl_cam_close(self.hcam), "pl_cam_close")
def shutdown(self):
check(pvcam.pl_cam_deregister_callback(self.hcam,
pvc.int32(pvc.PL_CALLBACK_EOF)),
"pl_cam_deregister_callback")
check(pvcam.pl_cam_close(self.hcam), "pl_cam_close")