def list_resolutions(device):
import motionctl
global _resolutions_cache
device = utils.make_str(device)
if device in _resolutions_cache:
return _resolutions_cache[device]
logging.debug('listing resolutions of device %(device)s...' %
{'device': device})
resolutions = set()
output = ''
started = time.time()
cmd = 'v4l2-ctl -d %(device)s --list-formats-ext | grep -vi stepwise | grep -oE "[0-9]+x[0-9]+" || true' % {
'device': pipes.quote(device)
}
p = subprocess.Popen(cmd, shell=True, stdout=subprocess.PIPE, bufsize=1)
fd = p.stdout.fileno()
fl = fcntl.fcntl(fd, fcntl.F_GETFL)
fcntl.fcntl(fd, fcntl.F_SETFL, fl | os.O_NONBLOCK)
while True:
try:
data = p.stdout.read(1024)
if not data:
break
except IOError:
data = ''
time.sleep(0.01)
output += data
if len(output) > 10240:
logging.warn('v4l2-ctl command returned more than 10k of output')
break
if time.time() - started > _V4L2_TIMEOUT:
logging.warn('v4l2-ctl command ran for more than %s seconds' %
_V4L2_TIMEOUT)
break
try:
# try to kill the v4l2-ctl subprocess
p.kill()
except:
pass # nevermind
for pair in output.split('\n'):
pair = pair.strip()
if not pair:
continue
width, height = pair.split('x')
width = int(width)
height = int(height)
if (width, height) in resolutions:
continue # duplicate resolution
if width < 96 or height < 96: # some reasonable minimal values
continue
if not motionctl.resolution_is_valid(width, height):
continue
resolutions.add((width, height))
logging.debug(
'found resolution %(width)sx%(height)s for device %(device)s' % {
'device': device,
'width': width,
'height': height
})
if not resolutions:
logging.debug(
'no resolutions found for device %(device)s, using common values' %
{'device': device})
# no resolution returned by v4l2-ctl call, add common default resolutions
resolutions = utils.COMMON_RESOLUTIONS
resolutions = [
r for r in resolutions if motionctl.resolution_is_valid(*r)
]
resolutions = list(sorted(resolutions, key=lambda r: (r[0], r[1])))
_resolutions_cache[device] = resolutions
return resolutions
def list_resolutions(device):
import motionctl
global _resolutions_cache
device = utils.make_str(device)
if device in _resolutions_cache:
return _resolutions_cache[device]
logging.debug('listing resolutions of device %(device)s...' % {'device': device})
resolutions = set()
output = ''
started = time.time()
cmd = 'v4l2-ctl -d %(device)s --list-formats-ext | grep -vi stepwise | grep -oE "[0-9]+x[0-9]+" || true' % {
'device': pipes.quote(device)}
p = subprocess.Popen(cmd, shell=True, stdout=subprocess.PIPE, bufsize=1)
fd = p.stdout.fileno()
fl = fcntl.fcntl(fd, fcntl.F_GETFL)
fcntl.fcntl(fd, fcntl.F_SETFL, fl | os.O_NONBLOCK)
while True:
try:
data = p.stdout.read(1024)
if not data:
break
except IOError:
data = ''
time.sleep(0.01)
output += data
if len(output) > 10240:
logging.warn('v4l2-ctl command returned more than 10k of output')
break
if time.time() - started > _V4L2_TIMEOUT:
logging.warn('v4l2-ctl command ran for more than %s seconds' % _V4L2_TIMEOUT)
break
try:
# try to kill the v4l2-ctl subprocess
p.kill()
except:
pass # nevermind
for pair in output.split('\n'):
pair = pair.strip()
if not pair:
continue
width, height = pair.split('x')
width = int(width)
height = int(height)
if (width, height) in resolutions:
continue # duplicate resolution
if width < 96 or height < 96: # some reasonable minimal values
continue
if not motionctl.resolution_is_valid(width, height):
continue
resolutions.add((width, height))
logging.debug('found resolution %(width)sx%(height)s for device %(device)s' % {
'device': device, 'width': width, 'height': height})
if not resolutions:
logging.debug('no resolutions found for device %(device)s, using common values' % {'device': device})
# no resolution returned by v4l2-ctl call, add common default resolutions
resolutions = utils.COMMON_RESOLUTIONS
resolutions = [r for r in resolutions if motionctl.resolution_is_valid(*r)]
resolutions = list(sorted(resolutions, key=lambda r: (r[0], r[1])))
_resolutions_cache[device] = resolutions
return resolutions