fix(safari): Use standard audio constraints on non-chromium browsers

Standard audio constraints need to be passed to gUM for audio input device selection
to work properly on Safari.
Safari doesn't support permissions query, add a workaround for that.

JitsiMediaDevices.js

@@ -136,6 +136,14 @@ class JitsiMediaDevices {
             // Check using the Permissions API.
             this._permissionsApiSupported.then(supported => {
                 if (!supported) {
+                    // Workaround on Safari for audio input device
+                    // selection to work. Safari doesn't support the
+                    // permissions query.
+                    if (browser.isSafari()) {
+                        resolve(true);
+
+                        return;
+                    }
                     resolve(false);
 
                     return;

modules/RTC/RTCUtils.js

@@ -398,27 +398,36 @@ function newGetConstraints(um = [], options = {}) {
             constraints.audio = {};
         }
 
-        // NOTE(brian): the new-style ('advanced' instead of 'optional')
-        // doesn't seem to carry through the googXXX constraints
-        // Changing back to 'optional' here (even with video using
-        // the 'advanced' style) allows them to be passed through
-        // but also requires the device id to capture to be set in optional
-        // as sourceId otherwise the constraints are considered malformed.
-        if (!constraints.audio.optional) {
-            constraints.audio.optional = [];
+        // Use the standard audio constraints on non-chromium browsers.
+        if (browser.isFirefox() || browser.isSafari()) {
+            constraints.audio = {
+                deviceId: options.micDeviceId,
+                autoGainControl: !disableAGC && !disableAP,
+                echoCancellation: !disableAEC && !disableAP,
+                noiseSuppression: !disableNS && !disableAP
+            };
+        } else {
+            // NOTE(brian): the new-style ('advanced' instead of 'optional')
+            // doesn't seem to carry through the googXXX constraints
+            // Changing back to 'optional' here (even with video using
+            // the 'advanced' style) allows them to be passed through
+            // but also requires the device id to capture to be set in optional
+            // as sourceId otherwise the constraints are considered malformed.
+            if (!constraints.audio.optional) {
+                constraints.audio.optional = [];
+            }
+            constraints.audio.optional.push(
+                { sourceId: options.micDeviceId },
+                { echoCancellation: !disableAEC && !disableAP },
+                { googEchoCancellation: !disableAEC && !disableAP },
+                { googAutoGainControl: !disableAGC && !disableAP },
+                { googNoiseSuppression: !disableNS && !disableAP },
+                { googHighpassFilter: !disableHPF && !disableAP },
+                { googNoiseSuppression2: !disableNS && !disableAP },
+                { googEchoCancellation2: !disableAEC && !disableAP },
+                { googAutoGainControl2: !disableAGC && !disableAP }
+            );
         }
-
-        constraints.audio.optional.push(
-            { sourceId: options.micDeviceId },
-            { echoCancellation: !disableAEC && !disableAP },
-            { googEchoCancellation: !disableAEC && !disableAP },
-            { googAutoGainControl: !disableAGC && !disableAP },
-            { googNoiseSuppression: !disableNS && !disableAP },
-            { googHighpassFilter: !disableHPF && !disableAP },
-            { googNoiseSuppression2: !disableNS && !disableAP },
-            { googEchoCancellation2: !disableAEC && !disableAP },
-            { googAutoGainControl2: !disableAGC && !disableAP }
-        );
     } else {
         constraints.audio = false;
     }