chromecast/renderer/media/media_channel_proxy.h

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef CHROMECAST_RENDERER_MEDIA_MEDIA_CHANNEL_PROXY_H_
   6 #define CHROMECAST_RENDERER_MEDIA_MEDIA_CHANNEL_PROXY_H_
   7
   8 #include "base/macros.h"
   9 #include "base/memory/ref_counted.h"
  10 #include "base/memory/scoped_ptr.h"
  11 #include "chromecast/media/cma/pipeline/load_type.h"
  12 #include "chromecast/renderer/media/cma_message_filter_proxy.h"
  13
  14 namespace IPC {
  15 class Message;
  16 }
  17
  18 namespace chromecast {
  19 namespace media {
  20
  21 // MediaChannelProxy - Manage the lifetime of a CMA ipc channel.
  22 // Must be invoked from the IO thread of the renderer process.
  23 class MediaChannelProxy
  24     : public base::RefCountedThreadSafe<MediaChannelProxy> {
  25  public:
  26   MediaChannelProxy();
  27
  28   // Opens a CMA ipc channel.
  29   void Open(LoadType load_type);
  30
  31   // Closes the ipc channel.
  32   void Close();
  33
  34   // Returns the ID of the CMA ipc channel.
  35   // Returns 0 or negative ID if no channel has been opened.
  36   int GetId() { return id_; }
  37
  38   // Manages delegates.
  39   bool SetMediaDelegate(
  40       const CmaMessageFilterProxy::MediaDelegate& media_delegate);
  41   bool SetAudioDelegate(
  42       const CmaMessageFilterProxy::AudioDelegate& audio_delegate);
  43   bool SetVideoDelegate(
  44       const CmaMessageFilterProxy::VideoDelegate& video_delegate);
  45
  46   // Sends an IPC message over this CMA ipc channel.
  47   bool Send(scoped_ptr<IPC::Message> message);
  48
  49  private:
  50   friend class base::RefCountedThreadSafe<MediaChannelProxy>;
  51   virtual ~MediaChannelProxy();
  52
  53   // Message filter running on the renderer side.
  54   scoped_refptr<CmaMessageFilterProxy> filter_;
  55
  56   // Indicates whether the CMA channel is open.
  57   bool is_open_;
  58
  59   // Unique identifier per media pipeline.
  60   int id_;
  61
  62   DISALLOW_COPY_AND_ASSIGN(MediaChannelProxy);
  63 };
  64
  65 }  // namespace media
  66 }  // namespace chromecast
  67
  68 #endif  // CHROMECAST_RENDERER_MEDIA_MEDIA_CHANNEL_PROXY_H_