content/browser/media/android/browser_demuxer_android.h

   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_BROWSER_MEDIA_ANDROID_BROWSER_DEMUXER_ANDROID_H_
   6 #define CONTENT_BROWSER_MEDIA_ANDROID_BROWSER_DEMUXER_ANDROID_H_
   7
   8 #include <map>
   9
  10 #include "base/id_map.h"
  11 #include "content/public/browser/browser_message_filter.h"
  12 #include "media/base/android/demuxer_android.h"
  13
  14 namespace content {
  15
  16 // Represents the browser process half of an IPC-based demuxer proxy.
  17 // It vends out media::DemuxerAndroid instances that are registered with an
  18 // end point in the renderer process.
  19 //
  20 // Refer to RendererDemuxerAndroid for the renderer process half.
  21 class CONTENT_EXPORT BrowserDemuxerAndroid : public BrowserMessageFilter {
  22  public:
  23   BrowserDemuxerAndroid();
  24
  25   // BrowserMessageFilter overrides.
  26   base::TaskRunner* OverrideTaskRunnerForMessage(
  27       const IPC::Message& message) override;
  28
  29   bool OnMessageReceived(const IPC::Message& message) override;
  30
  31   // Returns an uninitialized demuxer implementation associated with
  32   // |demuxer_client_id|, which can be used to communicate with the real demuxer
  33   // in the renderer process.
  34   scoped_ptr<media::DemuxerAndroid> CreateDemuxer(int demuxer_client_id);
  35
  36  protected:
  37   friend class base::RefCountedThreadSafe<BrowserDemuxerAndroid>;
  38   ~BrowserDemuxerAndroid() override;
  39
  40  private:
  41   class Internal;
  42
  43   // Called by internal demuxer implementations to add/remove a client
  44   // association.
  45   void AddDemuxerClient(int demuxer_client_id,
  46                         media::DemuxerAndroidClient* client);
  47   void RemoveDemuxerClient(int demuxer_client_id);
  48
  49   // IPC message handlers.
  50   void OnDemuxerReady(int demuxer_client_id,
  51                       const media::DemuxerConfigs& configs);
  52   void OnReadFromDemuxerAck(int demuxer_client_id,
  53                             const media::DemuxerData& data);
  54   void OnDemuxerSeekDone(int demuxer_client_id,
  55                          const base::TimeDelta& actual_browser_seek_time);
  56   void OnDurationChanged(int demuxer_client_id,
  57                          const base::TimeDelta& duration);
  58
  59   IDMap<media::DemuxerAndroidClient> demuxer_clients_;
  60
  61   // When the demuxer client is created on UI thread but demuxer
  62   // messages arrive on Media thread their relative order is undefined.
  63   // Use |pending_configs_| map to keep the upcoming configurations
  64   // until the client is created.
  65   typedef std::map<int, media::DemuxerConfigs> ConfigsPerClient;
  66   ConfigsPerClient pending_configs_;
  67
  68   base::SingleThreadTaskRunner* task_runner_;
  69
  70   DISALLOW_COPY_AND_ASSIGN(BrowserDemuxerAndroid);
  71 };
  72
  73 }  // namespace content
  74
  75 #endif  // CONTENT_BROWSER_MEDIA_ANDROID_BROWSER_DEMUXER_ANDROID_H_