content/browser/renderer_host/media/media_stream_dispatcher_host.h

   1 // Copyright (c) 2012 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_RENDERER_HOST_MEDIA_MEDIA_STREAM_DISPATCHER_HOST_H_
   6 #define CONTENT_BROWSER_RENDERER_HOST_MEDIA_MEDIA_STREAM_DISPATCHER_HOST_H_
   7
   8 #include <map>
   9 #include <string>
  10 #include <utility>
  11
  12 #include "content/browser/renderer_host/media/media_stream_manager.h"
  13 #include "content/browser/renderer_host/media/media_stream_requester.h"
  14 #include "content/common/content_export.h"
  15 #include "content/common/media/media_stream_options.h"
  16 #include "content/public/browser/browser_message_filter.h"
  17
  18 namespace content {
  19 class MediaStreamManager;
  20
  21 // MediaStreamDispatcherHost is a delegate for Media Stream API messages used by
  22 // MediaStreamImpl. It's the complement of MediaStreamDispatcher
  23 // (owned by RenderView).
  24 class CONTENT_EXPORT MediaStreamDispatcherHost : public BrowserMessageFilter,
  25                                                  public MediaStreamRequester {
  26  public:
  27   MediaStreamDispatcherHost(int render_process_id,
  28                             MediaStreamManager* media_stream_manager);
  29
  30   // MediaStreamRequester implementation.
  31   virtual void StreamGenerated(
  32       const std::string& label,
  33       const StreamDeviceInfoArray& audio_devices,
  34       const StreamDeviceInfoArray& video_devices) OVERRIDE;
  35   virtual void StreamGenerationFailed(const std::string& label) OVERRIDE;
  36   virtual void DevicesEnumerated(const std::string& label,
  37                                  const StreamDeviceInfoArray& devices) OVERRIDE;
  38   virtual void DeviceOpened(const std::string& label,
  39                             const StreamDeviceInfo& video_device) OVERRIDE;
  40
  41   // BrowserMessageFilter implementation.
  42   virtual bool OnMessageReceived(const IPC::Message& message,
  43                                  bool* message_was_ok) OVERRIDE;
  44   virtual void OnChannelClosing() OVERRIDE;
  45
  46  protected:
  47   virtual ~MediaStreamDispatcherHost();
  48
  49  private:
  50   friend class MockMediaStreamDispatcherHost;
  51
  52   void OnGenerateStream(int render_view_id,
  53                         int page_request_id,
  54                         const StreamOptions& components,
  55                         const GURL& security_origin);
  56   void OnCancelGenerateStream(int render_view_id,
  57                               int page_request_id);
  58   void OnStopGeneratedStream(int render_view_id, const std::string& label);
  59
  60   void OnEnumerateDevices(int render_view_id,
  61                           int page_request_id,
  62                           MediaStreamType type,
  63                           const GURL& security_origin);
  64
  65   void OnOpenDevice(int render_view_id,
  66                     int page_request_id,
  67                     const std::string& device_id,
  68                     MediaStreamType type,
  69                     const GURL& security_origin);
  70
  71   int render_process_id_;
  72   MediaStreamManager* media_stream_manager_;
  73
  74   struct StreamRequest;
  75   typedef std::map<std::string, StreamRequest> StreamMap;
  76   // Streams generated for this host.
  77   StreamMap streams_;
  78
  79   DISALLOW_COPY_AND_ASSIGN(MediaStreamDispatcherHost);
  80 };
  81
  82 }  // namespace content
  83
  84 #endif  // CONTENT_BROWSER_RENDERER_HOST_MEDIA_MEDIA_STREAM_DISPATCHER_HOST_H_