add &metersource url parameter

Author: lebaston100

README.md

@@ -49,11 +49,12 @@ There are two different way to set settings, either by editing the default value
 #### When using url parameters:
 The first url parameter needs to use a ? instead of &. Also it's possible that you may need to url-encode your host/password values if they contain special characters (esp. ?&=). Just type your host/password into [this website](https://urlencode.org/), click encode and use the displayed value in the url.
 
-#### Available parameters:
+#### Available parameters (all optional):
 - &host= (url param) / var obsHost = (file): This configures the ip or hostname and port of the machine running obs-websocket. It defaults to localhost/127.0.0.1 so only needs to be added if you're connecting from a different machine then the local one.
 - &password= (url param) / var obsPassword = (file): This configures the password used to authenticate with obs-websocket. Only needed if you have enabled authentication in obs-websocket.
 - &hidebottom (url param) / (no file param): This hides the server address for monitor1 and recording path for monitor 2 to not overlay with the multiview scene name labels.
 - &secure (url param) / obsProtocol = (file): Only use this if you know exactly what you are doing! Can be used to switch to wss for the websocket connection when using a wss proxy.
+- &metersource (url param) / (no file param): Statically selects which meters to show. 1=postfader (post-fader post-mute), 2=prefader(pre-fader pre-mute). Default is dynamic switching between 1 (source unmuted) and 2 (source muted). Only works for monitor3.html
 
 If you have any problems, just open a Github issue or join my [Discord Server](https://discord.gg/PCYQJwX).
 

display3.html

@@ -130,6 +130,7 @@
             function reloadSourceFilterList(sourceName) {
                 if (obs.identified && sourceName in inputStates) return obs.call('GetSourceFilterList', { sourceName }).then(({ filters }) => { inputStates[sourceName].filters = filters.filter((filter) => filter.filterEnabled); });
             }
+
             obs.on("InputVolumeMeters", ({ inputs }) => {
                 let i = 0;
                 for (let { inputName, inputLevelsMul } of inputs) {
@@ -155,10 +156,11 @@
                     if (inputLevelsMul.length == 1) inputLevelsMul.push([0, 0, 0]);
                     for (const level of inputLevelsMul) {
                         if (j>=2) break; // just do two channels
-                        const value = mul_to_decibel(inputStates[inputName].muted ? level[2] : level[1]); // highest sound...
+                        const meterlevel = urlParams.has("metersource") ? level[parseInt(urlParams.get("metersource"))] : inputStates[inputName].muted ? level[2] : level[1]
+                        const value = mul_to_decibel(meterlevel);
                         document.querySelector(`#meter-${i}>div.Volume`).innerText = (value == Infinity) ? "-∞" : -Math.round(value);
-			if (j==0) document.querySelector(`#meter-${i}>div.VUMeter>div.Left`).style.setProperty('--amount', value_to_perc(value));
-			if (j==1) document.querySelector(`#meter-${i}>div.VUMeter>div.Right`).style.setProperty('--amount', value_to_perc(value));
+                        if (j==0) document.querySelector(`#meter-${i}>div.VUMeter>div.Left`).style.setProperty('--amount', value_to_perc(value));
+                        if (j==1) document.querySelector(`#meter-${i}>div.VUMeter>div.Right`).style.setProperty('--amount', value_to_perc(value));
                         j++;
                     }
                     i++;