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Check RTSP stream selection control is valid

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Add a check to make sure the RTSP Stream control is valid before adding the 'onchange' event to avoid breaking the other controls
This commit is contained in:
jaredb7
2023-04-08 14:13:44 +10:00
parent 56f168a280
commit 9988acfdbd
1 changed files with 38 additions and 36 deletions
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scripts/spectrogram.php
+10 -8
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@@ -481,9 +481,10 @@ h1 {
<script>
var rtsp_stream_select = document.getElementById("rtsp_stream_select");
//When the dropdown selection is changed set the new value is settings, then restart the livestream service so it broadcasts newly selected RTSP stream
rtsp_stream_select.onchange = function() {
if (this.value !== 'undefined'){
if (typeof (rtsp_stream_select) !== 'undefined' && rtsp_stream_select !== null) {
//When the dropdown selection is changed set the new value is settings, then restart the livestream service so it broadcasts newly selected RTSP stream
rtsp_stream_select.onchange = function () {
if (this.value !== 'undefined') {
// Get the audio player element
var audio_player = document.querySelector('audio#player');
var central_controls_element = document.getElementsByClassName('centered')[0];
@@ -491,22 +492,22 @@ rtsp_stream_select.onchange = function() {
//Create the loading header again as a placeholder while we're waiting to reload the stream
var h1_loading = document.createElement("H1");
var h1_loading_text = document.createTextNode("Loading...");
h1_loading.setAttribute("id","loading-h1");
h1_loading.setAttribute("style","font-size:48px; font-weight: bolder; color: #FFF");
h1_loading.setAttribute("id", "loading-h1");
h1_loading.setAttribute("style", "font-size:48px; font-weight: bolder; color: #FFF");
h1_loading.appendChild(h1_loading_text);
// Create the XMLHttpRequest object.
const xhr = new XMLHttpRequest();
// Initialize the request
xhr.open("GET", './views.php?rtsp_stream_to_livestream='+ this.value +'&view=Advanced&submit=advanced');
xhr.open("GET", './views.php?rtsp_stream_to_livestream=' + this.value + '&view=Advanced&submit=advanced');
// Send the request
xhr.send();
// Fired once the request completes successfully
xhr.onload = function(e) {
xhr.onload = function (e) {
// Check if the request was a success
if (this.readyState === XMLHttpRequest.DONE && this.status === 200) {
// Restart the audio player in case it stopped working while the livestream service was restarted
if(audio_player !== 'undefined'){
if (audio_player !== 'undefined') {
central_controls_element.appendChild(h1_loading);
//Wait 5 seconds before restarting the stream
setTimeout(function () {
@@ -523,6 +524,7 @@ rtsp_stream_select.onchange = function() {
}
}
}
}
}
var slider = document.getElementById("gain_input");