1 files changed, 63 insertions, 0 deletions
diff --git a/dom/webidl/AudioData.webidl b/dom/webidl/AudioData.webidl
new file mode 100644
index 0000000000..e413e93971
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+++ b/dom/webidl/AudioData.webidl
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+/* -*- Mode: IDL; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * The origin of this IDL file is
+ * https://w3c.github.io/webcodecs/#audiodata
+ */
+
+// [Serializable, Transferable] are implemented without adding attributes here,
+// but directly with {Read,Write}StructuredClone and Transfer/FromTransfered.
+[Exposed=(Window,DedicatedWorker), Pref="dom.media.webcodecs.enabled"]
+interface AudioData {
+  [Throws]
+  constructor(AudioDataInit init);
+
+  readonly attribute AudioSampleFormat? format;
+  readonly attribute float sampleRate;
+  readonly attribute unsigned long numberOfFrames;
+  readonly attribute unsigned long numberOfChannels;
+  readonly attribute unsigned long long duration;  // microseconds
+  readonly attribute long long timestamp;          // microseconds
+
+  [Throws]
+  unsigned long allocationSize(AudioDataCopyToOptions options);
+  [Throws]
+  undefined copyTo(
+      // bug 1696216: Should be `copyTo(AllowSharedBufferSource destination, ...)`
+      ([AllowShared] ArrayBufferView or [AllowShared] ArrayBuffer) destination,
+       AudioDataCopyToOptions options);
+  [Throws]
+  AudioData clone();
+  undefined close();
+};
+
+dictionary AudioDataInit {
+  required AudioSampleFormat format;
+  required float sampleRate;
+  required [EnforceRange] unsigned long numberOfFrames;
+  required [EnforceRange] unsigned long numberOfChannels;
+  required [EnforceRange] long long timestamp;  // microseconds
+  // bug 1696216: Should be AllowSharedBufferSource
+  required ([AllowShared] ArrayBufferView or [AllowShared] ArrayBuffer) data;
+  sequence<ArrayBuffer> transfer = [];
+};
+
+enum AudioSampleFormat {
+  "u8",
+  "s16",
+  "s32",
+  "f32",
+  "u8-planar",
+  "s16-planar",
+  "s32-planar",
+  "f32-planar",
+};
+
+dictionary AudioDataCopyToOptions {
+  required [EnforceRange] unsigned long planeIndex;
+  [EnforceRange] unsigned long frameOffset = 0;
+  [EnforceRange] unsigned long frameCount;
+  AudioSampleFormat format;
+};