1 files changed, 79 insertions, 0 deletions
diff --git a/dom/media/webaudio/MediaBufferDecoder.h b/dom/media/webaudio/MediaBufferDecoder.h
new file mode 100644
index 000000000..3e79b37ff
--- /dev/null
+++ b/dom/media/webaudio/MediaBufferDecoder.h
@@ -0,0 +1,79 @@
+/* -*- 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 MediaBufferDecoder_h_
+#define MediaBufferDecoder_h_
+
+#include "nsWrapperCache.h"
+#include "nsCOMPtr.h"
+#include "nsString.h"
+#include "nsTArray.h"
+#include "mozilla/dom/TypedArray.h"
+#include "mozilla/MemoryReporting.h"
+
+namespace mozilla {
+
+class ThreadSharedFloatArrayBufferList;
+
+namespace dom {
+class AudioBuffer;
+class AudioContext;
+class DecodeErrorCallback;
+class DecodeSuccessCallback;
+class Promise;
+} // namespace dom
+
+struct WebAudioDecodeJob final
+{
+  // You may omit both the success and failure callback, or you must pass both.
+  // The callbacks are only necessary for asynchronous operation.
+  WebAudioDecodeJob(const nsACString& aContentType,
+                    dom::AudioContext* aContext,
+                    dom::Promise* aPromise,
+                    dom::DecodeSuccessCallback* aSuccessCallback = nullptr,
+                    dom::DecodeErrorCallback* aFailureCallback = nullptr);
+
+  NS_INLINE_DECL_CYCLE_COLLECTING_NATIVE_REFCOUNTING(WebAudioDecodeJob)
+  NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_NATIVE_CLASS(WebAudioDecodeJob)
+
+  enum ErrorCode {
+    NoError,
+    UnknownContent,
+    UnknownError,
+    InvalidContent,
+    NoAudio
+  };
+
+  typedef void (WebAudioDecodeJob::*ResultFn)(ErrorCode);
+
+  void OnSuccess(ErrorCode /* ignored */);
+  void OnFailure(ErrorCode aErrorCode);
+
+  bool AllocateBuffer();
+
+  size_t SizeOfExcludingThis(mozilla::MallocSizeOf aMallocSizeOf) const;
+  size_t SizeOfIncludingThis(mozilla::MallocSizeOf aMallocSizeOf) const;
+
+  nsCString mContentType;
+  uint32_t mWriteIndex;
+  RefPtr<dom::AudioContext> mContext;
+  RefPtr<dom::Promise> mPromise;
+  RefPtr<dom::DecodeSuccessCallback> mSuccessCallback;
+  RefPtr<dom::DecodeErrorCallback> mFailureCallback; // can be null
+  RefPtr<dom::AudioBuffer> mOutput;
+  RefPtr<ThreadSharedFloatArrayBufferList> mBuffer;
+
+private:
+  ~WebAudioDecodeJob();
+};
+
+void AsyncDecodeWebAudio(const char* aContentType, uint8_t* aBuffer,
+                         uint32_t aLength, WebAudioDecodeJob& aDecodeJob);
+
+} // namespace mozilla
+
+#endif
+