IPC to pass media data using a lock free circular fifo.

chromecast/media/cma/ipc/media_memory_chunk.h

Index: chromecast/media/cma/ipc/media_memory_chunk.h
diff --git a/chromecast/media/cma/ipc/media_memory_chunk.h b/chromecast/media/cma/ipc/media_memory_chunk.h
new file mode 100644
index 0000000000000000000000000000000000000000..de19de8534fece34d9c06672b1fed06cd6e7bf07
--- /dev/null
+++ b/chromecast/media/cma/ipc/media_memory_chunk.h
@@ -0,0 +1,30 @@
+// Copyright 2014 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 CHROMECAST_MEDIA_CMA_IPC_MEDIA_MEMORY_CHUNK_H_
+#define CHROMECAST_MEDIA_CMA_IPC_MEDIA_MEMORY_CHUNK_H_
+
+#include "base/basictypes.h"
+
+namespace chromecast {
+namespace media {
+
+class MediaMemoryChunk {

[xhwang, 2014/09/03 17:40:33]

Add documentation.

[damienv1, 2014/09/03 23:59:05]

Done.

+ public:
+  virtual ~MediaMemoryChunk();
+
+  // Returns the start of the block of memory.
+  virtual void* data() const = 0;
+
+  // Returns the size of the block of memory.
+  virtual size_t size() const = 0;
+
+  // Returns whether the underlying block of memory is valid.
+  virtual bool valid() const = 0;

[xhwang, 2014/09/03 17:40:33]

Document when this is useful.

[damienv1, 2014/09/03 23:59:05]

Done.

+};
+
+}  // namespace media
+}  // namespace chromecast
+
+#endif  // CHROMECAST_MEDIA_CMA_IPC_MEDIA_MEMORY_CHUNK_H_