Report playback progress in a separate thread to reduce render latency.

components/PlaystateTask.brs

@@ -1,51 +1,48 @@
-function PlaystateUpdate(id, state as string, params = {})
-    if state = "start"
-        url = "Sessions/Playing"
-    else if state = "stop"
-        url = "Sessions/Playing/Stopped"
-    else if state = "update"
-        url = "Sessions/Playing/Progress"
-    else
-        ' Unknow State
-        return {}
-    end if
-    params = PlaystateDefaults(id, params)
-    resp = APIRequest(url)
-    return postJson(resp, params)
-end function
-
-function PlaystateDefaults(id = "" as string, params = {} as object)
-    new_params = {
-        '"CanSeek": false
-        '"Item": "{}", ' TODO!
-        '"NowPlayingQueue": "[]", ' TODO!
-        '"PlaylistItemId": "",
-        "ItemId": id,
-        '"SessionId": "", ' TODO!
-        '"MediaSourceId": id,
-        '"AudioStreamIndex": 1,
-        '"SubtitleStreamIndex": 0,
-        "IsPaused": false,
-        '"IsMuted": false,
-        "PositionTicks": 0,
-        '"PlaybackStartTimeTicks": 0,
-        '"VolumeLevel": 100,
-        '"Brightness": 100,
-        '"AspectRatio": "16x9",
-        '"PlayMethod": "DirectStream"
-        '"LiveStreamId": "",
-        '"PlaySessionId": "",
-        '"RepeatMode": "RepeatNone"
-    }
-    for each p in params.items()
-        new_params[p.key] = p.value
-    end for
-    return FormatJson(new_params)
-end function
-
-sub deleteTranscode(id)
-    devinfo = CreateObject("roDeviceInfo")
-    req = APIRequest("/Videos/ActiveEncodings", { "deviceID": devinfo.getChannelClientID(), "PlaySessionId": id })
-    req.setRequest("DELETE")
-    postVoid(req)
-end sub
+sub init()
+    m.top.functionName = "PlaystateUpdate"
+end sub
+
+sub PlaystateUpdate()
+    if m.top.status = "start"
+        url = "Sessions/Playing"
+    else if m.top.status = "stop"
+        url = "Sessions/Playing/Stopped"
+    else if m.top.status = "update"
+        url = "Sessions/Playing/Progress"
+    else
+        ' Unknown State
+        return
+    end if
+    params = PlaystateDefaults(m.top.params)
+    resp = APIRequest(url)
+    postJson(resp, params)
+end sub
+
+function PlaystateDefaults(params = {} as object)
+    new_params = {
+        '"CanSeek": false
+        '"Item": "{}", ' TODO!
+        '"NowPlayingQueue": "[]", ' TODO!
+        '"PlaylistItemId": "",
+        '"ItemId": id,
+        '"SessionId": "", ' TODO!
+        '"MediaSourceId": id,
+        '"AudioStreamIndex": 1,
+        '"SubtitleStreamIndex": 0,
+        "IsPaused": false,
+        '"IsMuted": false,
+        "PositionTicks": 0,
+        '"PlaybackStartTimeTicks": 0,
+        '"VolumeLevel": 100,
+        '"Brightness": 100,
+        '"AspectRatio": "16x9",
+        '"PlayMethod": "DirectStream"
+        '"LiveStreamId": "",
+        '"PlaySessionId": "",
+        '"RepeatMode": "RepeatNone"
+    }
+    for each p in params.items()
+        new_params[p.key] = p.value
+    end for
+    return FormatJson(new_params)
+end function

components/PlaystateTask.xml

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="utf-8" ?>
+
+<component name="PlaystateTask" extends="Task">
+  <interface>
+    <field id="status" type="string" />
+    <field id="params" type="assocarray" />
+  </interface>
+  <script type="text/brightscript" uri="PlaystateTask.brs" />
+  <script type="text/brightscript" uri="pkg:/source/api/baserequest.brs" />
+  <script type="text/brightscript" uri="pkg:/source/utils/config.brs" />
+</component>

source/Main.brs

@@ -17,7 +17,11 @@ sub Main (args as dynamic) as void
 
     ' Set any initial Global Variables
     m.global = m.screen.getGlobalNode()
-    m.global.addFields({ app_loaded: false })
+
+    playstateTask = CreateObject("roSGNode", "PlaystateTask")
+    playstateTask.id = "playstateTask"
+
+    m.global.addFields({ app_loaded: false, playstateTask: playstateTask })
 
     m.overhang = CreateObject("roSGNode", "JFOverhang")
     m.scene.insertChild(m.overhang, 0)

source/VideoPlayer.brs

@@ -213,6 +213,7 @@ sub ReportPlayback(video, state = "update" as string)
     if video = invalid or video.position = invalid then return
 
     params = {
+        "ItemId": video.id
         "PlaySessionId": video.PlaySessionId,
         "PositionTicks": int(video.position) * 10000000&, 'Ensure a LongInteger is used
         "IsPaused": (video.state = "paused"),
@@ -223,7 +224,9 @@ sub ReportPlayback(video, state = "update" as string)
             "LiveStreamId": video.transcodeParams.LiveStreamId
         })
     end if
-    PlaystateUpdate(video.id, state, params)
+    playstateTask = m.global.playstateTask
+    playstateTask.setFields({ status: state, params: params })
+    playstateTask.control = "RUN"
 end sub
 
 sub StopPlayback()