class Camera_Capture(object):
"""docstring for uvcc_camera"""
def __init__(self,cam,size=(640,480),fps=None):
self.src_id = cam.src_id
self.serial = cam.serial
self.name = cam.name
self.controls = Controls(self.src_id)
try:
self.controls['focus_auto'].set_val(0)
except KeyError:
pass
#give camera some time to change settings.
sleep(0.3)
self.capture = VideoCapture(self.src_id,size,fps)
self.get_frame = self.capture.read
def re_init(self,cam,size=(640,480),fps=30):
current_size = self.capture.get_size()
current_fps = self.capture.get_rate()
self.capture.cleanup()
self.capture = None
#recreate the bar with new values
bar_pos = self.bar._get_position()
self.bar.destroy()
self.src_id = cam.src_id
self.serial = cam.serial
self.name = cam.name
self.controls = Controls(self.src_id)
try:
self.controls['focus_auto'].set_val(0)
except KeyError:
pass
self.capture = VideoCapture(self.src_id,current_size,current_fps)
self.get_frame = self.capture.read
self.create_atb_bar(bar_pos)
def re_init_cam_by_src_id(self,src_id):
try:
cam = Camera_List()[src_id]
except KeyError:
logger.warning("could not reinit capture, src_id not valid anymore")
return
self.re_init(cam)
def create_atb_bar(self,pos):
# add uvc camera controls to a separate ATB bar
size = (200,200)
self.bar = atb.Bar(name="Camera", label=self.name,
help="UVC Camera Controls", color=(50,50,50), alpha=100,
text='light',position=pos,refresh=2., size=size)
cameras_enum = atb.enum("Capture",dict([(c.name,c.src_id) for c in Camera_List()]) )
self.bar.add_var("Capture",vtype=cameras_enum,getter=lambda:self.src_id, setter=self.re_init_cam_by_src_id)
self.bar.add_var('framerate', vtype = atb.enum('framerate',self.capture.rates_menu), getter = lambda:self.capture.current_rate_idx, setter=self.capture.set_rate_idx )
sorted_controls = [c for c in self.controls.itervalues()]
sorted_controls.sort(key=lambda c: c.order)
for control in sorted_controls:
name = control.atb_name
if control.type=="bool":
self.bar.add_var(name,vtype=atb.TW_TYPE_BOOL8,getter=control.get_val,setter=control.set_val)
elif control.type=='int':
self.bar.add_var(name,vtype=atb.TW_TYPE_INT32,getter=control.get_val,setter=control.set_val)
self.bar.define(definition='min='+str(control.min), varname=name)
self.bar.define(definition='max='+str(control.max), varname=name)
self.bar.define(definition='step='+str(control.step), varname=name)
elif control.type=="menu":
if control.menu is None:
vtype = None
else:
vtype= atb.enum(name,control.menu)
self.bar.add_var(name,vtype=vtype,getter=control.get_val,setter=control.set_val)
if control.menu is None:
self.bar.define(definition='min='+str(control.min), varname=name)
self.bar.define(definition='max='+str(control.max), varname=name)
self.bar.define(definition='step='+str(control.step), varname=name)
else:
pass
if control.flags == "inactive":
pass
# self.bar.define(definition='readonly=1',varname=control.name)
self.bar.add_button("refresh",self.controls.update_from_device)
self.bar.add_button("load defaults",self.controls.load_defaults)
return size
def close(self):
self.kill_atb_bar()
del self.capture
def kill_atb_bar(self):
self.bar.destroy()
del self.bar
class Camera_Capture(object):
"""docstring for uvcc_camera"""
def __init__(self,cam,size=(640,480),fps=None,timebase=None):
self.src_id = cam.src_id
self.serial = cam.serial
self.name = cam.name
self.controls = Controls(self.src_id)
try:
self.controls['focus_auto'].set_val(0)
except KeyError:
pass
try:
# exposure_auto_priority == 1
# leads to reduced framerates under low light and corrupt timestamps.
self.controls['exposure_auto_priority'].set_val(0)
except KeyError:
pass
self.timebase = timebase
self.use_hw_ts = self.check_hw_ts_support()
#give camera some time to change settings.
sleep(0.3)
self.capture = VideoCapture(self.src_id,size,fps,timebase = self.timebase, use_hw_timestamps = self.use_hw_ts)
self.get_frame = self.capture.read
self.get_now = self.capture.get_time_monotonic
def check_hw_ts_support(self):
# hw timestamping:
# v4l2 supports Sart of Exposure hardware timestamping ofr UVC Capture devices
# these HW timestamps are excellent referece times and
# prefferec over softwaretimestamp denoting the avaibleilt of frames to the user.
# however not all uvc cameras report valid hw timestamps, notably microsoft hd-6000
# becasue all used devices need to properly implement hw timestamping for it to be usefull
# but we cannot now what device the other process is using + the user may select a differet capture device during runtime
# we use some fuzzy logic to determine if hw timestamping should be employed.
blacklist = ["Microsoft","HD-6000"]
qualifying_devices = ["C930e","Integrated Camera"]
attached_devices = [c.name for c in Camera_List()]
if any(qd in self.name for qd in qualifying_devices):
use_hw_ts = True
logger.info("Capture device: '%s' supports HW timestamping. Using hardware timestamps." %self.name)
else:
use_hw_ts = False
logger.info("Capture device: '%s' is not known to support HW timestamping. Using software timestamps." %self.name)
for d in attached_devices:
if any(bd in d for bd in blacklist):
logger.info("Capture device: '%s' detected as attached device. Falling back to software timestamps"%d)
use_hw_ts = False
return use_hw_ts
def re_init(self,cam,size=(640,480),fps=30):
current_size = self.capture.get_size()
current_fps = self.capture.get_rate()
self.capture.cleanup()
self.capture = None
#recreate the bar with new values
bar_pos = self.bar._get_position()
self.bar.destroy()
self.src_id = cam.src_id
self.serial = cam.serial
self.name = cam.name
self.controls = Controls(self.src_id)
try:
self.controls['focus_auto'].set_val(0)
except KeyError:
pass
try:
self.controls['exposure_auto_priority'].set_val(0)
except KeyError:
pass
self.use_hw_ts = self.check_hw_ts_support()
self.capture = VideoCapture(self.src_id,current_size,current_fps,self.timebase,self.use_hw_ts)
self.get_frame = self.capture.read
self.get_now = self.capture.get_time_monotonic
self.create_atb_bar(bar_pos)
def re_init_cam_by_src_id(self,requested_id):
for cam in Camera_List():
if cam.src_id == requested_id:
self.re_init(cam)
return
logger.warning("could not reinit capture, src_id not valid anymore")
return
def create_atb_bar(self,pos):
# add uvc camera controls to a separate ATB bar
size = (200,200)
self.bar = atb.Bar(name="Camera", label=self.name,
help="UVC Camera Controls", color=(50,50,50), alpha=100,
text='light',position=pos,refresh=2., size=size)
cameras_enum = atb.enum("Capture",dict([(c.name,c.src_id) for c in Camera_List()]) )
self.bar.add_var("Capture",vtype=cameras_enum,getter=lambda:self.src_id, setter=self.re_init_cam_by_src_id)
self.bar.add_var('framerate', vtype = atb.enum('framerate',self.capture.rates_menu), getter = lambda:self.capture.current_rate_idx, setter=self.capture.set_rate_idx )
self.bar.add_var('hardware timestamps',vtype=atb.TW_TYPE_BOOL8,getter=lambda:self.use_hw_ts)
sorted_controls = [c for c in self.controls.itervalues()]
sorted_controls.sort(key=lambda c: c.order)
for control in sorted_controls:
name = control.atb_name
if control.type=="bool":
self.bar.add_var(name,vtype=atb.TW_TYPE_BOOL8,getter=control.get_val,setter=control.set_val)
elif control.type=='int':
self.bar.add_var(name,vtype=atb.TW_TYPE_INT32,getter=control.get_val,setter=control.set_val)
self.bar.define(definition='min='+str(control.min), varname=name)
self.bar.define(definition='max='+str(control.max), varname=name)
self.bar.define(definition='step='+str(control.step), varname=name)
elif control.type=="menu":
if control.menu is None:
vtype = None
else:
vtype= atb.enum(name,control.menu)
self.bar.add_var(name,vtype=vtype,getter=control.get_val,setter=control.set_val)
if control.menu is None:
self.bar.define(definition='min='+str(control.min), varname=name)
self.bar.define(definition='max='+str(control.max), varname=name)
self.bar.define(definition='step='+str(control.step), varname=name)
else:
pass
if control.flags == "inactive":
pass
if control.name == 'exposure_auto_priority':
# the controll should always be off. we set it to 0 on init (see above)
self.bar.define(definition='readonly=1',varname=control.name)
self.bar.add_button("refresh",self.controls.update_from_device)
self.bar.add_button("load defaults",self.controls.load_defaults)
return size
def close(self):
self.kill_atb_bar()
del self.capture
logger.info("Capture released")
def kill_atb_bar(self):
if hasattr(self,'bar'):
self.bar.destroy()
del self.bar
class Camera_Capture(object):
"""docstring for uvcc_camera"""
def __init__(self, cam, size=(640, 480), fps=None):
self.src_id = cam.src_id
self.serial = cam.serial
self.name = cam.name
self.controls = Controls(self.src_id)
try:
self.controls['focus_auto'].set_val(0)
except KeyError:
pass
#give camera some time to change settings.
sleep(0.3)
self.capture = VideoCapture(self.src_id, size, fps)
self.get_frame = self.capture.read
def re_init(self, cam, size=(640, 480), fps=30):
current_size = self.capture.get_size()
current_fps = self.capture.get_rate()
self.capture.cleanup()
self.capture = None
#recreate the bar with new values
bar_pos = self.bar._get_position()
self.bar.destroy()
self.src_id = cam.src_id
self.serial = cam.serial
self.name = cam.name
self.controls = Controls(self.src_id)
try:
self.controls['focus_auto'].set_val(0)
except KeyError:
pass
self.capture = VideoCapture(self.src_id, current_size, current_fps)
self.get_frame = self.capture.read
self.create_atb_bar(bar_pos)
def re_init_cam_by_src_id(self, requested_id):
for cam in Camera_List():
if cam.src_id == requested_id:
self.re_init(cam)
return
logger.warning("could not reinit capture, src_id not valid anymore")
return
def create_atb_bar(self, pos):
# add uvc camera controls to a separate ATB bar
size = (200, 200)
self.bar = atb.Bar(name="Camera",
label=self.name,
help="UVC Camera Controls",
color=(50, 50, 50),
alpha=100,
text='light',
position=pos,
refresh=2.,
size=size)
cameras_enum = atb.enum(
"Capture", dict([(c.name, c.src_id) for c in Camera_List()]))
self.bar.add_var("Capture",
vtype=cameras_enum,
getter=lambda: self.src_id,
setter=self.re_init_cam_by_src_id)
self.bar.add_var('framerate',
vtype=atb.enum('framerate', self.capture.rates_menu),
getter=lambda: self.capture.current_rate_idx,
setter=self.capture.set_rate_idx)
sorted_controls = [c for c in self.controls.itervalues()]
sorted_controls.sort(key=lambda c: c.order)
for control in sorted_controls:
name = control.atb_name
if control.type == "bool":
self.bar.add_var(name,
vtype=atb.TW_TYPE_BOOL8,
getter=control.get_val,
setter=control.set_val)
elif control.type == 'int':
self.bar.add_var(name,
vtype=atb.TW_TYPE_INT32,
getter=control.get_val,
setter=control.set_val)
self.bar.define(definition='min=' + str(control.min),
varname=name)
self.bar.define(definition='max=' + str(control.max),
varname=name)
self.bar.define(definition='step=' + str(control.step),
varname=name)
elif control.type == "menu":
if control.menu is None:
vtype = None
else:
vtype = atb.enum(name, control.menu)
self.bar.add_var(name,
vtype=vtype,
getter=control.get_val,
setter=control.set_val)
if control.menu is None:
self.bar.define(definition='min=' + str(control.min),
varname=name)
self.bar.define(definition='max=' + str(control.max),
varname=name)
self.bar.define(definition='step=' + str(control.step),
varname=name)
else:
pass
if control.flags == "inactive":
pass
# self.bar.define(definition='readonly=1',varname=control.name)
self.bar.add_button("refresh", self.controls.update_from_device)
self.bar.add_button("load defaults", self.controls.load_defaults)
return size
def close(self):
self.kill_atb_bar()
del self.capture
def kill_atb_bar(self):
self.bar.destroy()
del self.bar
class Camera_Capture(object):
"""docstring for uvcc_camera"""
def __init__(self, cam, size=(640, 480), fps=None, timebase=None):
self.src_id = cam.src_id
self.serial = cam.serial
self.name = cam.name
self.controls = Controls(self.src_id)
try:
self.controls['focus_auto'].set_val(0)
except KeyError:
pass
try:
# exposure_auto_priority == 1
# leads to reduced framerates under low light and corrupt timestamps.
self.controls['exposure_auto_priority'].set_val(0)
except KeyError:
pass
self.timebase = timebase
self.use_hw_ts = self.check_hw_ts_support()
#give camera some time to change settings.
sleep(0.3)
self.capture = VideoCapture(self.src_id,
size,
fps,
timebase=self.timebase,
use_hw_timestamps=self.use_hw_ts)
self.get_frame = self.capture.read
self.get_now = self.capture.get_time_monotonic
def check_hw_ts_support(self):
# hw timestamping:
# v4l2 supports Sart of Exposure hardware timestamping ofr UVC Capture devices
# these HW timestamps are excellent referece times and
# prefferec over softwaretimestamp denoting the avaibleilt of frames to the user.
# however not all uvc cameras report valid hw timestamps, notably microsoft hd-6000
# becasue all used devices need to properly implement hw timestamping for it to be usefull
# but we cannot now what device the other process is using + the user may select a differet capture device during runtime
# we use some fuzzy logic to determine if hw timestamping should be employed.
blacklist = ["Microsoft", "HD-6000"]
qualifying_devices = ["C930e", "Integrated Camera"]
attached_devices = [c.name for c in Camera_List()]
if any(qd in self.name for qd in qualifying_devices):
use_hw_ts = True
logger.info(
"Capture device: '%s' supports HW timestamping. Using hardware timestamps."
% self.name)
else:
use_hw_ts = False
logger.info(
"Capture device: '%s' is not known to support HW timestamping. Using software timestamps."
% self.name)
for d in attached_devices:
if any(bd in d for bd in blacklist):
logger.info(
"Capture device: '%s' detected as attached device. Falling back to software timestamps"
% d)
use_hw_ts = False
return use_hw_ts
def re_init(self, cam, size=(640, 480), fps=30):
current_size = self.capture.get_size()
current_fps = self.capture.get_rate()
self.capture.cleanup()
self.capture = None
#recreate the bar with new values
bar_pos = self.bar._get_position()
self.bar.destroy()
self.src_id = cam.src_id
self.serial = cam.serial
self.name = cam.name
self.controls = Controls(self.src_id)
try:
self.controls['focus_auto'].set_val(0)
except KeyError:
pass
try:
self.controls['exposure_auto_priority'].set_val(0)
except KeyError:
pass
self.use_hw_ts = self.check_hw_ts_support()
self.capture = VideoCapture(self.src_id, current_size, current_fps,
self.timebase, self.use_hw_ts)
self.get_frame = self.capture.read
self.get_now = self.capture.get_time_monotonic
self.create_atb_bar(bar_pos)
def re_init_cam_by_src_id(self, requested_id):
for cam in Camera_List():
if cam.src_id == requested_id:
self.re_init(cam)
return
logger.warning("could not reinit capture, src_id not valid anymore")
return
def create_atb_bar(self, pos):
# add uvc camera controls to a separate ATB bar
size = (200, 200)
self.bar = atb.Bar(name="Camera",
label=self.name,
help="UVC Camera Controls",
color=(50, 50, 50),
alpha=100,
text='light',
position=pos,
refresh=2.,
size=size)
cameras_enum = atb.enum(
"Capture", dict([(c.name, c.src_id) for c in Camera_List()]))
self.bar.add_var("Capture",
vtype=cameras_enum,
getter=lambda: self.src_id,
setter=self.re_init_cam_by_src_id)
self.bar.add_var('framerate',
vtype=atb.enum('framerate', self.capture.rates_menu),
getter=lambda: self.capture.current_rate_idx,
setter=self.capture.set_rate_idx)
self.bar.add_var('hardware timestamps',
vtype=atb.TW_TYPE_BOOL8,
getter=lambda: self.use_hw_ts)
sorted_controls = [c for c in self.controls.itervalues()]
sorted_controls.sort(key=lambda c: c.order)
for control in sorted_controls:
name = control.atb_name
if control.type == "bool":
self.bar.add_var(name,
vtype=atb.TW_TYPE_BOOL8,
getter=control.get_val,
setter=control.set_val)
elif control.type == 'int':
self.bar.add_var(name,
vtype=atb.TW_TYPE_INT32,
getter=control.get_val,
setter=control.set_val)
self.bar.define(definition='min=' + str(control.min),
varname=name)
self.bar.define(definition='max=' + str(control.max),
varname=name)
self.bar.define(definition='step=' + str(control.step),
varname=name)
elif control.type == "menu":
if control.menu is None:
vtype = None
else:
vtype = atb.enum(name, control.menu)
self.bar.add_var(name,
vtype=vtype,
getter=control.get_val,
setter=control.set_val)
if control.menu is None:
self.bar.define(definition='min=' + str(control.min),
varname=name)
self.bar.define(definition='max=' + str(control.max),
varname=name)
self.bar.define(definition='step=' + str(control.step),
varname=name)
else:
pass
if control.flags == "inactive":
pass
if control.name == 'exposure_auto_priority':
# the controll should always be off. we set it to 0 on init (see above)
self.bar.define(definition='readonly=1', varname=control.name)
self.bar.add_button("refresh", self.controls.update_from_device)
self.bar.add_button("load defaults", self.controls.load_defaults)
return size
def close(self):
self.kill_atb_bar()
del self.capture
logger.info("Capture released")
def kill_atb_bar(self):
if hasattr(self, 'bar'):
self.bar.destroy()
del self.bar