[Chromecast] Add CmaMediaRendererFactory and IPC proxy components

chromecast/renderer/media/audio_pipeline_proxy.h

+// 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_RENDERER_MEDIA_AUDIO_PIPELINE_PROXY_H_
+#define CHROMECAST_RENDERER_MEDIA_AUDIO_PIPELINE_PROXY_H_
+
+#include "base/macros.h"
+#include "base/memory/ref_counted.h"
+#include "base/memory/scoped_ptr.h"
+#include "base/memory/weak_ptr.h"
+#include "base/threading/thread_checker.h"
+#include "chromecast/common/media/cma_ipc_common.h"
+#include "chromecast/media/cma/pipeline/audio_pipeline.h"
+#include "media/base/pipeline_status.h"
+
+namespace base {
+class MessageLoopProxy;
+class SharedMemory;
+}
+
+namespace media {
+class AudioDecoderConfig;
+}
+
+namespace chromecast {
+namespace media {
+class AudioPipelineProxyInternal;
+struct AvPipelineClient;
+class AvStreamerProxy;
+class CodedFrameProvider;
+class MediaChannelProxy;
+
+class AudioPipelineProxy : public AudioPipeline {
+ public:
+  AudioPipelineProxy(
+      scoped_refptr<base::MessageLoopProxy> io_message_loop_proxy,
+      scoped_refptr<MediaChannelProxy> media_channel_proxy);
+  ~AudioPipelineProxy() override;
+
+  void Initialize(
+      const ::media::AudioDecoderConfig& config,
+      scoped_ptr<CodedFrameProvider> frame_provider,
+      const ::media::PipelineStatusCB& status_cb);
+  void StartFeeding();
+  void Flush(const base::Closure& done_cb);
+  void Stop();
+
+  // AudioPipeline implementation.
+  void SetClient(const AvPipelineClient& client) override;
+  void SetVolume(float volume) override;
+
+ private:
+  base::ThreadChecker thread_checker_;
+
+  void OnAvPipeCreated(
+      const ::media::AudioDecoderConfig& config,
+      const ::media::PipelineStatusCB& status_cb,
+      scoped_ptr<base::SharedMemory> shared_memory);
+  void OnPipeWrite();
+  void OnPipeRead();
+
+  scoped_refptr<base::MessageLoopProxy> io_message_loop_proxy_;
+
+  // |proxy_| main goal is to convert function calls to IPC messages.
+  scoped_ptr<AudioPipelineProxyInternal> proxy_;
+
+  scoped_ptr<AvStreamerProxy> audio_streamer_;
+
+  base::WeakPtr<AudioPipelineProxy> weak_this_;
+  base::WeakPtrFactory<AudioPipelineProxy> weak_factory_;
+
+  DISALLOW_COPY_AND_ASSIGN(AudioPipelineProxy);
+};
+
+}  // namespace media
+}  // namespace chromecast
+
+#endif  // CHROMECAST_RENDERER_MEDIA_AUDIO_PIPELINE_PROXY_H_