http interface can now change and view audio delay

Allows http interface to set the playback rate.
Playback rate must be > 0

Set subtitle delay using the http iterface
Signed-off-by: Jean-Baptiste Kempf <jb@videolan.org>

share/lua/http/dialogs/main

@@ -98,6 +98,39 @@ sout and playlist .
       <img src="images/speaker_mute.png" alt="Mute Volume" />
       <span class="btn_text">Mute Volume</span>
     </button>
+    <br />
+    Audio Delay:
+    <button id="btn_delay_down" onclick="audiodelay_down();" onmouseover="button_over(this);" onmouseout="button_out(this);" title="Decrease Audio Delay by 50ms" >
+      <img src="images/minus.png" alt="Decrease Audio Delay" />
+      <span class="btn_text">Decrease Audio Delay</span>
+    </button>
+    <button id="btn_delay_up" onclick="audiodelay_up();" onmouseover="button_over(this);" onmouseout="button_out(this);" title="Increase Audio Delay by 50ms" >
+      <img src="images/plus.png" alt="Increase Audio Delay" />
+      <span class="btn_text">Increase Audio Delay</span>
+    </button>
+    <span id="a_del">(?)</span> ms
+ <br />
+    Playback Speed:
+    <button id="btn_delay_down" onclick="playrate_down();" onmouseover="button_over(this);" onmouseout="button_out(this);" title="Decrease playback rate by 0.05x" >
+      <img src="images/minus.png" alt="Decrease Playback Rate" />
+      <span class="btn_text">Decrease Playback Rate</span>
+    </button>
+    <button id="btn_delay_up" onclick="playrate_up();" onmouseover="button_over(this);" onmouseout="button_out(this);" title="Increase playback rate by 0.05x" >
+      <img src="images/plus.png" alt="Increase Playback Rate" />
+      <span class="btn_text">Increase Playback Rate</span>
+    </button>
+    <span id="p_rate">(?)</span>x
+  <br/>
+  Advance of subtitles over video:
+    <button id="btn_delay_down" onclick="subdel_down();" onmouseover="button_over(this);" onmouseout="button_out(this);" title="Decrease subtitle delay by 50ms" >
+      <img src="images/minus.png" alt="Decrease Subtitle delay" />
+      <span class="btn_text">Decrease Subtitle delay</span>
+    </button>
+    <button id="btn_delay_up" onclick="subdel_up();" onmouseover="button_over(this);" onmouseout="button_out(this);" title="Increase subtitle delay by 50ms" >
+      <img src="images/plus.png" alt="Increase Subtitle delay" />
+      <span class="btn_text">Increase Subtitle delay</span>
+    </button>
+    <span id="s_del">(?)</span>ms
 
   </div>
   <div id="status">

share/lua/http/js/functions.js

@@ -416,6 +416,48 @@ function reset_search()
         update_playlist_search('')
     }
 }
+function audiodelay_down()
+{
+    var curdel = parseFloat(req.responseXML.documentElement.getElementsByTagName( 'audiodelay' )[0].firstChild.data);
+    var curdelnew = curdel - 0.05;
+    curdelnew=curdelnew.toFixed(2);
+    loadXMLDoc( 'requests/status.xml?command=audiodelay&val='+encodeURIComponent(curdelnew), parse_status );
+}
+function audiodelay_up()
+{
+    var curdel = parseFloat(req.responseXML.documentElement.getElementsByTagName( 'audiodelay' )[0].firstChild.data);
+    var curdelnew = curdel + 0.05;
+    curdelnew=curdelnew.toFixed(2);
+    loadXMLDoc( 'requests/status.xml?command=audiodelay&val='+encodeURIComponent(curdelnew), parse_status );
+}
+function playrate_down()
+{
+    var currate = parseFloat(req.responseXML.documentElement.getElementsByTagName( 'rate' )[0].firstChild.data);
+    var curratenew = currate - 0.05;
+    curratenew=curratenew.toFixed(2);
+    loadXMLDoc( 'requests/status.xml?command=rate&val='+encodeURIComponent(curratenew), parse_status );
+}
+function playrate_up()
+{
+    var currate = parseFloat(req.responseXML.documentElement.getElementsByTagName( 'rate' )[0].firstChild.data);
+    var curratenew = currate + 0.05;
+    curratenew=curratenew.toFixed(2);
+    loadXMLDoc( 'requests/status.xml?command=rate&val='+encodeURIComponent(curratenew), parse_status );
+}
+function subdel_down()
+{
+    var curdel = parseFloat(req.responseXML.documentElement.getElementsByTagName( 'subtitledelay' )[0].firstChild.data);
+    var curdelnew = curdel - 0.05;
+    curdelnew=curdelnew.toFixed(2);
+    loadXMLDoc( 'requests/status.xml?command=subdelay&val='+encodeURIComponent(curdelnew), parse_status );
+}
+function subdel_up()
+{
+    var curdel = parseFloat(req.responseXML.documentElement.getElementsByTagName( 'subtitledelay' )[0].firstChild.data);
+    var curdelnew = curdel + 0.05;
+    curdelnew=curdelnew.toFixed(2);
+    loadXMLDoc( 'requests/status.xml?command=subdelay&val='+encodeURIComponent(curdelnew), parse_status );
+}
 
 /**********************************************************************
  * Parse xml replies to XMLHttpRequests
@@ -467,6 +509,12 @@ function parse_status()
             old_time = new_time;
             set_text( 'time', format_time( new_time ) );
             set_text( 'length', format_time( length ) );
+            var audio_delay = (parseFloat(req.responseXML.documentElement.getElementsByTagName( 'audiodelay' )[0].firstChild.data).toFixed(2))*1000;
+            set_text( 'a_del', audio_delay ); 
+            var play_rate = (parseFloat(req.responseXML.documentElement.getElementsByTagName( 'rate' )[0].firstChild.data).toFixed(2));
+            set_text( 'p_rate', play_rate ); 
+            var subs_delay = (parseFloat(req.responseXML.documentElement.getElementsByTagName( 'subtitledelay' )[0].firstChild.data).toFixed(2))*1000;
+            set_text( 's_del', subs_delay ); 
             if( status.getElementsByTagName( 'volume' ).length != 0 )
                 set_text( 'volume', Math.floor(status.getElementsByTagName( 'volume' )[0].firstChild.data/5.12)+'%' );
             var statetag = status.getElementsByTagName( 'state' );

share/lua/http/requests/README.txt

@@ -50,6 +50,15 @@ status.xml:
 > empty playlist:
   ?command=pl_empty
 
+> set audio delay
+  ?command=audiodelay&val=<delayinseconds>
+
+> set subtitle delay
+  ?command=subdelay&val=<delayinseconds>
+
+> set playback rate. must be > 0
+  ?command=rate&val=<newplaybackrate>
+
 > sort playlist using sort mode <val> and order <id>:
   ?command=pl_sort&id=<id>&val=<val>
   If id=0 then items will be sorted in normal order, if id=1 they will be

share/lua/http/requests/status.xml

@@ -111,6 +111,18 @@ elseif command == "seek" then
   common.seek(val)
 elseif command == "key" then
   common.hotkey("key-"..val)
+elseif command == "audiodelay" then
+  if vlc.object.input() and val then
+   vlc.var.set(vlc.object.input(),"audio-delay",val)
+  end
+elseif command == "rate" then
+  if vlc.object.input() and tonumber(val) >= 0 then
+   vlc.var.set(vlc.object.input(),"rate",val)
+  end
+elseif command == "subdelay" then
+  if vlc.object.input() then
+   vlc.var.set(vlc.object.input(),"spu-delay",val)
+  end
 end
 
 local input = nil
@@ -125,6 +137,9 @@ local vout = input and vlc.object.find(input,'vout','child')
 ?>
 <root>
   <volume><?vlc print(vlc.volume.get()) ?></volume>
+  <audiodelay><?vlc if input then print(vlc.var.get(input,"audio-delay")) else print (0) end ?></audiodelay>
+  <rate><?vlc if input then print(vlc.var.get(input,"rate")) else print (1) end ?></rate>
+  <subtitledelay><?vlc if input then print(vlc.var.get(input,"spu-delay")) else print (0) end ?></subtitledelay>
   <length><?vlc if input then print(math.floor(vlc.var.get(input,"length"))) else print(0) end?></length>
   <time><?vlc if input then print(math.floor(vlc.var.get(input,"time"))) else print(0) end?></time>
   <state><?vlc print(vlc.playlist.status()) ?></state>