#1030 webcam fixes

* webcam_option variable should always be an uncooked string
* osx cannot do webcam yet, so disable by default in config file to avoid the warning

git-svn-id: https://xpra.org/svn/Xpra/trunk@12280 3bb7dfac-3a0b-4e04-842a-767bc560f471

src/etc/xpra/xpra.conf.in

@@ -211,7 +211,7 @@ av-sync = on
 # webcam = auto
 # webcam = no
 # webcam = /dev/video0
-webcam = auto
+webcam = %(webcam)s
 
 
 ################################################################################

src/setup.py

@@ -925,6 +925,7 @@ def pretty_cmd(cmd):
             'pulseaudio'            : bstr(not OSX and not WIN32),
             'pdf_printer'           : pdf,
             'postscript_printer'    : postscript,
+            'webcam'                : ["auto", "no"][OSX],
             'printing'              : printing_ENABLED,
             'dbus_control'          : dbus_ENABLED,
             'mmap'                  : bstr(not OSX and not WIN32),

src/xpra/client/ui_client_base.py

@@ -173,7 +173,7 @@ def __init__(self):
         self.encoding = None
 
         #webcam:
-        self.webcam_option = False
+        self.webcam_option = ""
         self.webcam_forwarding = False
         self.webcam_device = None
         self.webcam_device_no = -1
@@ -317,8 +317,8 @@ def init(self, opts):
         self.mmap_group = opts.mmap_group
         self.shadow_fullscreen = opts.shadow_fullscreen
 
-        self.webcam_option = opts.webcam.lower()
-        self.webcam_forwarding = self.webcam_option not in ("no", "false")
+        self.webcam_option = opts.webcam
+        self.webcam_forwarding = self.webcam_option.lower() not in ("no", "false")
         self.server_supports_webcam = False
         self.server_virtual_video_devices = 0
         if self.webcam_forwarding:
@@ -331,7 +331,7 @@ def init(self, opts):
                 webcamlog.warn(" %s", e)
                 webcamlog.warn(" webcam forwarding is disabled")
                 self.webcam_forwarding = False
-        webcamlog("webcam forwarding: %s", self.webcam_option)
+        webcamlog("webcam forwarding: %s", self.webcam_forwarding)
 
         self.sound_properties = typedict()
         self.speaker_allowed = sound_option(opts.speaker) in ("on", "off")