Load CMA backend from shared library

chromecast/public/media/cast_decoder_buffer.h

Index: chromecast/public/media/cast_decoder_buffer.h
diff --git a/chromecast/public/media/cast_decoder_buffer.h b/chromecast/public/media/cast_decoder_buffer.h
new file mode 100644
index 0000000000000000000000000000000000000000..bf3d76cfa3170cfb7276b9062910f44d2b476b17
--- /dev/null
+++ b/chromecast/public/media/cast_decoder_buffer.h
@@ -0,0 +1,53 @@
+// Copyright 2015 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_PUBLIC_MEDIA_CAST_DECODER_BUFFER_H_
+#define CHROMECAST_PUBLIC_MEDIA_CAST_DECODER_BUFFER_H_
+
+#include <stdint.h>
+
+#include <cstddef>
+
+#include "stream_id.h"
+
+namespace chromecast {
+namespace media {
+
+class CastDecryptConfig;
+
+// CastDecoderBuffer provides an interface for passing a single frame of audio
+// or video data to the pipeline backend.  End-of-stream is indicated by passing
+// a frame where end_of_stream() returns true.
+// Buffer ownership passes to backend when they are pushed (see
+// MediaComponentDevice::PushFrame).
+// TODO(halliwell): consider renaming functions here to camel case.
+class CastDecoderBuffer {
+ public:
+  virtual ~CastDecoderBuffer() {}
+
+  // Returns the stream id of this decoder buffer.
+  virtual StreamId stream_id() const = 0;
+
+  // Returns the PTS of the frame in microseconds.
+  virtual int64_t timestamp() const = 0;
+
+  // Gets the frame data.
+  virtual const uint8_t* data() const = 0;
+
+  // Returns the size of the frame in bytes.
+  virtual size_t data_size() const = 0;
+
+  // Returns the decrypt configuration.
+  // Returns NULL if and only if the buffer is unencrypted.
+  virtual const CastDecryptConfig* decrypt_config() const = 0;
+
+  // Indicates if this is a special frame that indicates the end of the stream.
+  // If true, functions to access the frame content cannot be called.
+  virtual bool end_of_stream() const = 0;
+};
+
+}  // namespace media
+}  // namespace chromecast
+
+#endif  // CHROMECAST_PUBLIC_MEDIA_CAST_DECODER_BUFFER_H_