1 files changed, 44 insertions, 0 deletions
diff --git a/bot/node_modules/matrix-js-sdk/src/webrtc/audioContext.ts b/bot/node_modules/matrix-js-sdk/src/webrtc/audioContext.ts
new file mode 100644
index 0000000..7cf3ed3
--- /dev/null
+++ b/bot/node_modules/matrix-js-sdk/src/webrtc/audioContext.ts
@@ -0,0 +1,44 @@
+/*
+Copyright 2022 The Matrix.org Foundation C.I.C.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+let audioContext: AudioContext | null = null;
+let refCount = 0;
+
+/**
+ * Acquires a reference to the shared AudioContext.
+ * It's highly recommended to reuse this AudioContext rather than creating your
+ * own, because multiple AudioContexts can be problematic in some browsers.
+ * Make sure to call releaseContext when you're done using it.
+ * @returns The shared AudioContext
+ */
+export const acquireContext = (): AudioContext => {
+    if (audioContext === null) audioContext = new AudioContext();
+    refCount++;
+    return audioContext;
+};
+
+/**
+ * Signals that one of the references to the shared AudioContext has been
+ * released, allowing the context and associated hardware resources to be
+ * cleaned up if nothing else is using it.
+ */
+export const releaseContext = (): void => {
+    refCount--;
+    if (refCount === 0) {
+        audioContext?.close();
+        audioContext = null;
+    }
+};