Motown in-proc streaming framework used to implement media services.

services/media/framework/allocator.h

+// Copyright 2016 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef SERVICES_MEDIA_FRAMEWORK_ALLOCATOR_H_
+#define SERVICES_MEDIA_FRAMEWORK_ALLOCATOR_H_
+
+#include <cstdint>
+
+namespace mojo {
+namespace media {
+
+// Abstract base class for objects that allocate buffers for packets.
+class Allocator {
+ public:
+  // Gets the default allocator, which allocates vanilla memory from the heap.
+  static Allocator* GetDefault();
+
+  // Allocates and returns a buffer of the indicated size or returns nullptr
+  // if the allocation fails.
+  virtual void* AllocatePayloadBuffer(uint64_t size) = 0;

[johngro, 2016/01/20 00:25:32]

<nit>
for in-proc non-mojom'ed stuff, we should use size_t instead of u64 here.
</nit>

[johngro, 2016/01/27 22:35:22]

Checking in; any thoughts on using size_t instead of uint64_t here?

[dalesat, 2016/01/28 18:49:15]

Added a TODO.

+
+  // Releases a buffer previously allocated via AllocatePayloadBuffer.
+  virtual void ReleasePayloadBuffer(uint64_t size, void* buffer) = 0;
+};
+
+}  // namespace media
+}  // namespace mojo
+
+#endif // SERVICES_MEDIA_FRAMEWORK_ALLOCATOR_H_