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      1 // Copyright 2013 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 CONTENT_RENDERER_MEDIA_ANDROID_RENDERER_DEMUXER_ANDROID_H_
      6 #define CONTENT_RENDERER_MEDIA_ANDROID_RENDERER_DEMUXER_ANDROID_H_
      7 
      8 #include "base/atomic_sequence_num.h"
      9 #include "base/id_map.h"
     10 #include "ipc/ipc_channel_proxy.h"
     11 #include "media/base/android/demuxer_stream_player_params.h"
     12 
     13 namespace content {
     14 
     15 class MediaSourceDelegate;
     16 class ThreadSafeSender;
     17 
     18 // Represents the renderer process half of an IPC-based implementation of
     19 // media::DemuxerAndroid.
     20 //
     21 // Refer to BrowserDemuxerAndroid for the browser process half.
     22 class RendererDemuxerAndroid : public IPC::ChannelProxy::MessageFilter {
     23  public:
     24   RendererDemuxerAndroid();
     25 
     26   // Returns the next available demuxer client ID for use in IPC messages.
     27   //
     28   // Safe to call on any thread.
     29   int GetNextDemuxerClientID();
     30 
     31   // Associates |delegate| with |demuxer_client_id| for handling incoming IPC
     32   // messages.
     33   //
     34   // Must be called on media thread.
     35   void AddDelegate(int demuxer_client_id, MediaSourceDelegate* delegate);
     36 
     37   // Removes the association created by AddDelegate().
     38   //
     39   // Must be called on media thread.
     40   void RemoveDelegate(int demuxer_client_id);
     41 
     42   // IPC::ChannelProxy::MessageFilter overrides.
     43   virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;
     44 
     45   // media::DemuxerAndroidClient "implementation".
     46   //
     47   // TODO(scherkus): Consider having RendererDemuxerAndroid actually implement
     48   // media::DemuxerAndroidClient and MediaSourceDelegate actually implement
     49   // media::DemuxerAndroid.
     50   void DemuxerReady(int demuxer_client_id,
     51                     const media::DemuxerConfigs& configs);
     52   void ReadFromDemuxerAck(int demuxer_client_id,
     53                           const media::DemuxerData& data);
     54   void DemuxerSeekDone(int demuxer_client_id,
     55                        const base::TimeDelta& actual_browser_seek_time);
     56   void DurationChanged(int demuxer_client_id, const base::TimeDelta& duration);
     57 
     58  protected:
     59   friend class base::RefCountedThreadSafe<RendererDemuxerAndroid>;
     60   virtual ~RendererDemuxerAndroid();
     61 
     62  private:
     63   void DispatchMessage(const IPC::Message& message);
     64   void OnReadFromDemuxer(int demuxer_client_id,
     65                          media::DemuxerStream::Type type);
     66   void OnDemuxerSeekRequest(int demuxer_client_id,
     67                             const base::TimeDelta& time_to_seek,
     68                             bool is_browser_seek);
     69   void OnMediaConfigRequest(int demuxer_client_id);
     70 
     71   base::AtomicSequenceNumber next_demuxer_client_id_;
     72 
     73   IDMap<MediaSourceDelegate> delegates_;
     74   scoped_refptr<ThreadSafeSender> thread_safe_sender_;
     75   scoped_refptr<base::MessageLoopProxy> media_message_loop_;
     76 
     77   DISALLOW_COPY_AND_ASSIGN(RendererDemuxerAndroid);
     78 };
     79 
     80 }  // namespace content
     81 
     82 #endif  // CONTENT_RENDERER_MEDIA_ANDROID_RENDERER_DEMUXER_ANDROID_H_
     83