1 files changed, 111 insertions, 0 deletions
diff --git a/dom/media/mediasource/SourceBufferTask.h b/dom/media/mediasource/SourceBufferTask.h
new file mode 100644
index 000000000..868b60859
--- /dev/null
+++ b/dom/media/mediasource/SourceBufferTask.h
@@ -0,0 +1,111 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* 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_SOURCEBUFFERTASK_H_
+#define MOZILLA_SOURCEBUFFERTASK_H_
+
+#include "mozilla/MozPromise.h"
+#include "mozilla/Pair.h"
+#include "mozilla/RefPtr.h"
+#include "SourceBufferAttributes.h"
+#include "TimeUnits.h"
+#include "MediaResult.h"
+
+namespace mozilla {
+
+class SourceBufferTask {
+public:
+  NS_INLINE_DECL_THREADSAFE_REFCOUNTING(SourceBufferTask);
+  enum class Type  {
+    AppendBuffer,
+    Abort,
+    Reset,
+    RangeRemoval,
+    EvictData,
+    Detach
+  };
+
+  typedef Pair<bool, SourceBufferAttributes> AppendBufferResult;
+  typedef MozPromise<AppendBufferResult, MediaResult, /* IsExclusive = */ true> AppendPromise;
+  typedef MozPromise<bool, nsresult, /* IsExclusive = */ true> RangeRemovalPromise;
+
+  virtual Type GetType() const = 0;
+
+  template<typename ReturnType>
+  ReturnType* As()
+  {
+    MOZ_ASSERT(this->GetType() == ReturnType::sType);
+    return static_cast<ReturnType*>(this);
+  }
+
+protected:
+  virtual ~SourceBufferTask() {}
+};
+
+class AppendBufferTask : public SourceBufferTask {
+public:
+  AppendBufferTask(MediaByteBuffer* aData,
+                   SourceBufferAttributes aAttributes)
+  : mBuffer(aData)
+  , mAttributes(aAttributes)
+  {}
+
+  static const Type sType = Type::AppendBuffer;
+  Type GetType() const override { return Type::AppendBuffer; }
+
+  RefPtr<MediaByteBuffer> mBuffer;
+  SourceBufferAttributes mAttributes;
+  MozPromiseHolder<AppendPromise> mPromise;
+};
+
+class AbortTask : public SourceBufferTask {
+public:
+  static const Type sType = Type::Abort;
+  Type GetType() const override { return Type::Abort; }
+};
+
+class ResetTask : public SourceBufferTask {
+public:
+  static const Type sType = Type::Reset;
+  Type GetType() const override { return Type::Reset; }
+};
+
+class RangeRemovalTask : public SourceBufferTask {
+public:
+  explicit RangeRemovalTask(const media::TimeInterval& aRange)
+  : mRange(aRange)
+  {}
+
+  static const Type sType = Type::RangeRemoval;
+  Type GetType() const override { return Type::RangeRemoval; }
+
+  media::TimeInterval mRange;
+  MozPromiseHolder<RangeRemovalPromise> mPromise;
+};
+
+class EvictDataTask : public SourceBufferTask {
+public:
+  EvictDataTask(const media::TimeUnit& aPlaybackTime, int64_t aSizetoEvict)
+  : mPlaybackTime(aPlaybackTime)
+  , mSizeToEvict(aSizetoEvict)
+  {}
+
+  static const Type sType = Type::EvictData;
+  Type GetType() const override { return Type::EvictData; }
+
+  media::TimeUnit mPlaybackTime;
+  int64_t mSizeToEvict;
+};
+
+class DetachTask : public SourceBufferTask {
+public:
+  static const Type sType = Type::Detach;
+  Type GetType() const override { return Type::Detach; }
+};
+
+} // end mozilla namespace
+
+#endif
+\ No newline at end of file