[Chromecast] Move CastAudioDecoder out to chromecast/media/cma/decoder

chromecast/media/cma/decoder/cast_audio_decoder_android.cc

+// 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.
+
+#include "chromecast/media/cma/decoder/cast_audio_decoder.h"
+
+#include "base/logging.h"
+
+namespace chromecast {
+namespace media {
+
+// static
+scoped_ptr<CastAudioDecoder> CastAudioDecoder::Create(
+    const scoped_refptr<base::SingleThreadTaskRunner>& task_runner,
+    const media::AudioConfig& config,
+    OutputFormat output_format,
+    const InitializedCallback& initialized_callback) {
+  return scoped_ptr<CastAudioDecoder>();
+}
+
+// static
+int CastAudioDecoder::OutputFormatSizeInBytes(
+    CastAudioDecoder::OutputFormat format) {
+  switch (format) {
+    case CastAudioDecoder::OutputFormat::kOutputSigned16:
+      return 2;
+    case CastAudioDecoder::OutputFormat::kOutputPlanarFloat:
+      return 4;
+  }
+  NOTREACHED();
+  return 1;
+}
+
+}  // namespace media
+}  // namespace chromecast