Add toggle to deactivate image caching during playback

- Partially fixes #451 - you can now disable image caching during playback

resources/language/resource.language.en_gb/strings.po

@@ -41,6 +41,11 @@ msgctxt "#30005"
 msgid "Username: "
 msgstr ""
 
+# PKC settings artwork: Enable image caching during Kodi playback
+msgctxt "#30009"
+msgid "Enable image caching during Kodi playback (restart Kodi!)"
+msgstr ""
+
 # Button text
 msgctxt "#30012"
 msgid "OK"

resources/lib/artwork.py

@@ -22,6 +22,10 @@ LOG = getLogger("PLEX." + __name__)
 # Disable annoying requests warnings
 requests.packages.urllib3.disable_warnings()
 ARTWORK_QUEUE = Queue()
+IMAGE_CACHING_SUSPENDS = ['SUSPEND_LIBRARY_THREAD', 'DB_SCAN', 'STOP_SYNC']
+if not settings('imageSyncDuringPlayback') == 'true':
+    IMAGE_CACHING_SUSPENDS.append('SUSPEND_SYNC')
+
 ###############################################################################
 
 
@@ -33,9 +37,7 @@ def double_urldecode(text):
     return unquote(unquote(text))
 
 
-@thread_methods(add_suspends=['SUSPEND_LIBRARY_THREAD',
-                              'DB_SCAN',
-                              'STOP_SYNC'])
+@thread_methods(add_suspends=IMAGE_CACHING_SUSPENDS)
 class Image_Cache_Thread(Thread):
     sleep_between = 50
     # Potentially issues with limited number of threads
@@ -47,6 +49,7 @@ class Image_Cache_Thread(Thread):
         Thread.__init__(self)
 
     def run(self):
+        LOG.info("---===### Starting Image_Cache_Thread ###===---")
         stopped = self.stopped
         suspended = self.suspended
         queue = self.queue

resources/settings.xml

@@ -125,6 +125,7 @@
 		<setting id="enableTextureCache" label="30512"  type="bool" default="true" /> <!-- Force Artwork Caching -->
 		<setting id="FanartTV" label="30539" type="bool" default="false" /><!-- Download additional art from FanArtTV -->
 		<setting label="39222" type="action" action="RunPlugin(plugin://plugin.video.plexkodiconnect/?mode=fanart)" option="close" visible="eq(-1,true)" subsetting="true" /> <!-- Look for missing fanart on FanartTV now -->
+        <setting id="imageSyncDuringPlayback" label="30009" type="bool" default="true" /><!-- Enable image caching during Kodi playback (restart Kodi!) -->
 		<setting label="39020" type="action" action="RunPlugin(plugin://plugin.video.plexkodiconnect/?mode=texturecache)" option="close" /> <!-- Cache all images to Kodi texture cache now -->
 	</category>
 	<!--