예제 #1
0
파일: webcam.py 프로젝트: svn2github/Xpra
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
예제 #2
0
파일: webcam.py 프로젝트: TianyouLi/Xpra
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
예제 #3
0
파일: webcam.py 프로젝트: TianyouLi/Xpra
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
예제 #4
0
파일: webcam.py 프로젝트: svn2github/Xpra
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