def get_all_video_devices(capture_only=True):
contents = os.listdir("/dev")
devices = {}
device_paths = set()
try:
from xpra.codecs.v4l2.pusher import query_video_device
except ImportError:
def query_video_device(device):
return {}
for f in contents:
if not f.startswith("video"):
continue
dev_file = "/dev/%s" % f
try:
dev_file = os.readlink(dev_file)
except OSError:
pass
if dev_file in device_paths:
continue
device_paths.add(dev_file)
try:
no = int(f[len("video"):])
assert no>=0
except:
continue
dev_info = query_video_device(dev_file)
if capture_only and not _can_capture_video(dev_file, dev_info):
continue
info = {"device" : dev_file}
info.update(dev_info)
devices[no] = info
return devices
def get_all_video_devices(capture_only=True):
contents = os.listdir("/dev")
devices = {}
device_paths = set()
try:
from xpra.codecs.v4l2.pusher import query_video_device
except ImportError:
def query_video_device(device):
return {}
for f in contents:
if not f.startswith("video"):
continue
dev_file = "/dev/%s" % f
try:
dev_file = os.readlink(dev_file)
except OSError:
pass
if dev_file in device_paths:
continue
device_paths.add(dev_file)
try:
no = int(f[len("video"):])
assert no >= 0
except:
continue
dev_info = query_video_device(dev_file)
if capture_only and not _can_capture_video(dev_file, dev_info):
continue
info = {"device": dev_file}
info.update(dev_info)
devices[no] = info
return devices
def get_virtual_video_devices(capture_only=True):
log("get_virtual_video_devices")
if not check_virtual_dir(False):
return []
contents = os.listdir(v4l2_virtual_dir)
devices = {}
try:
from xpra.codecs.v4l2.pusher import query_video_device
except ImportError:
def query_video_device(device):
return {}
for f in contents:
if not f.startswith("video"):
continue
try:
no = int(f[len("video"):])
assert no >= 0
except:
continue
dev_file = "/dev/%s" % f
dev_info = query_video_device(dev_file)
if capture_only and not _can_capture_video(dev_file, dev_info):
continue
info = {"device": dev_file}
info.update(dev_info)
if "card" not in dev_info:
#look up the name from the v4l2 virtual dir:
dev_dir = os.path.join(v4l2_virtual_dir, f)
if not os.path.isdir(dev_dir):
continue
dev_name = os.path.join(dev_dir, "name")
try:
name = open(dev_name).read().replace("\n", "")
info["card"] = name
except:
pass
devices[no] = info
log("devices: %s", devices)
log("found %i virtual video device%s", len(devices), engs(devices))
return devices
def get_virtual_video_devices(capture_only=True):
log("get_virtual_video_devices")
if not check_virtual_dir(False):
return []
contents = os.listdir(v4l2_virtual_dir)
devices = {}
try:
from xpra.codecs.v4l2.pusher import query_video_device
except ImportError:
def query_video_device(device):
return {}
for f in contents:
if not f.startswith("video"):
continue
try:
no = int(f[len("video"):])
assert no>=0
except:
continue
dev_file = "/dev/%s" % f
dev_info = query_video_device(dev_file)
if capture_only and not _can_capture_video(dev_file, dev_info):
continue
info = {"device" : dev_file}
info.update(dev_info)
if "card" not in dev_info:
#look up the name from the v4l2 virtual dir:
dev_dir = os.path.join(v4l2_virtual_dir, f)
if not os.path.isdir(dev_dir):
continue
dev_name = os.path.join(dev_dir, "name")
try:
name = open(dev_name).read().replace("\n", "")
info["card"] = name
except:
pass
devices[no] = info
log("devices: %s", devices)
log("found %i virtual video device%s", len(devices), engs(devices))
return devices
