1 files changed, 117 insertions, 0 deletions
diff --git a/dom/media/webcodecs/EncodedAudioChunk.h b/dom/media/webcodecs/EncodedAudioChunk.h
new file mode 100644
index 0000000000..53c059495a
--- /dev/null
+++ b/dom/media/webcodecs/EncodedAudioChunk.h
@@ -0,0 +1,117 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim:set ts=2 sw=2 sts=2 et cindent: */
+/* 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/. */
+
+#ifndef mozilla_dom_EncodedAudioChunk_h
+#define mozilla_dom_EncodedAudioChunk_h
+
+#include "js/TypeDecls.h"
+#include "mozilla/ErrorResult.h"
+#include "mozilla/Maybe.h"
+#include "mozilla/dom/BindingDeclarations.h"
+#include "nsCycleCollectionParticipant.h"
+#include "nsWrapperCache.h"
+
+class nsIGlobalObject;
+
+namespace mozilla {
+
+class MediaAlignedByteBuffer;
+class MediaRawData;
+
+namespace dom {
+
+class MaybeSharedArrayBufferViewOrMaybeSharedArrayBuffer;
+class OwningMaybeSharedArrayBufferViewOrMaybeSharedArrayBuffer;
+class StructuredCloneHolder;
+
+enum class EncodedAudioChunkType : uint8_t;
+struct EncodedAudioChunkInit;
+
+}  // namespace dom
+}  // namespace mozilla
+
+namespace mozilla::dom {
+
+class EncodedAudioChunkData {
+ public:
+  EncodedAudioChunkData(already_AddRefed<MediaAlignedByteBuffer> aBuffer,
+                        const EncodedAudioChunkType& aType, int64_t aTimestamp,
+                        Maybe<uint64_t>&& aDuration);
+  EncodedAudioChunkData(const EncodedAudioChunkData& aData) = default;
+  ~EncodedAudioChunkData() = default;
+
+  UniquePtr<EncodedAudioChunkData> Clone() const;
+  already_AddRefed<MediaRawData> TakeData();
+
+ protected:
+  // mBuffer's byte length is guaranteed to be smaller than UINT32_MAX.
+  RefPtr<MediaAlignedByteBuffer> mBuffer;
+  EncodedAudioChunkType mType;
+  int64_t mTimestamp;
+  Maybe<uint64_t> mDuration;
+};
+
+class EncodedAudioChunk final : public EncodedAudioChunkData,
+                                public nsISupports,
+                                public nsWrapperCache {
+ public:
+  NS_DECL_CYCLE_COLLECTING_ISUPPORTS
+  NS_DECL_CYCLE_COLLECTION_WRAPPERCACHE_CLASS(EncodedAudioChunk)
+
+ public:
+  EncodedAudioChunk(nsIGlobalObject* aParent,
+                    already_AddRefed<MediaAlignedByteBuffer> aBuffer,
+                    const EncodedAudioChunkType& aType, int64_t aTimestamp,
+                    Maybe<uint64_t>&& aDuration);
+
+  EncodedAudioChunk(nsIGlobalObject* aParent,
+                    const EncodedAudioChunkData& aData);
+
+ protected:
+  ~EncodedAudioChunk() = default;
+
+ public:
+  nsIGlobalObject* GetParentObject() const;
+
+  JSObject* WrapObject(JSContext* aCx,
+                       JS::Handle<JSObject*> aGivenProto) override;
+
+  static already_AddRefed<EncodedAudioChunk> Constructor(
+      const GlobalObject& aGlobal, const EncodedAudioChunkInit& aInit,
+      ErrorResult& aRv);
+
+  EncodedAudioChunkType Type() const;
+
+  int64_t Timestamp() const;
+
+  Nullable<uint64_t> GetDuration() const;
+
+  uint32_t ByteLength() const;
+
+  void CopyTo(
+      const MaybeSharedArrayBufferViewOrMaybeSharedArrayBuffer& aDestination,
+      ErrorResult& aRv);
+
+  // [Serializable] implementations: {Read, Write}StructuredClone
+  static JSObject* ReadStructuredClone(JSContext* aCx, nsIGlobalObject* aGlobal,
+                                       JSStructuredCloneReader* aReader,
+                                       const EncodedAudioChunkData& aData);
+
+  bool WriteStructuredClone(JSStructuredCloneWriter* aWriter,
+                            StructuredCloneHolder* aHolder) const;
+
+ private:
+  // EncodedAudioChunk can run on either main thread or worker thread.
+  void AssertIsOnOwningThread() const {
+    NS_ASSERT_OWNINGTHREAD(EncodedAudioChunk);
+  }
+
+  nsCOMPtr<nsIGlobalObject> mParent;
+};
+
+}  // namespace mozilla::dom
+
+#endif  // mozilla_dom_EncodedAudioChunk_h