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 #include "content/public/browser/resource_context.h"
  18
  19 namespace content {
  20
  21 class MediaStreamManager;
  22 class ResourceContext;
  23
  24 // MediaStreamDispatcherHost is a delegate for Media Stream API messages used by
  25 // MediaStreamImpl.  There is one MediaStreamDispatcherHost per
  26 // RenderProcessHost, the former owned by the latter.
  27 class CONTENT_EXPORT MediaStreamDispatcherHost : public BrowserMessageFilter,
  28                                                  public MediaStreamRequester {
  29  public:
  30   MediaStreamDispatcherHost(
  31       int render_process_id,
  32       const ResourceContext::SaltCallback& salt_callback,
  33       MediaStreamManager* media_stream_manager,
  34       ResourceContext* resource_context);
  35
  36   // MediaStreamRequester implementation.
  37   virtual void StreamGenerated(
  38       int render_frame_id,
  39       int page_request_id,
  40       const std::string& label,
  41       const StreamDeviceInfoArray& audio_devices,
  42       const StreamDeviceInfoArray& video_devices) OVERRIDE;
  43   virtual void StreamGenerationFailed(
  44       int render_frame_id,
  45       int page_request_id,
  46       content::MediaStreamRequestResult result) OVERRIDE;
  47   virtual void DeviceStopped(int render_frame_id,
  48                              const std::string& label,
  49                              const StreamDeviceInfo& device) OVERRIDE;
  50   virtual void DevicesEnumerated(int render_frame_id,
  51                                  int page_request_id,
  52                                  const std::string& label,
  53                                  const StreamDeviceInfoArray& devices) OVERRIDE;
  54   virtual void DeviceOpened(int render_frame_id,
  55                             int page_request_id,
  56                             const std::string& label,
  57                             const StreamDeviceInfo& video_device) OVERRIDE;
  58
  59   // BrowserMessageFilter implementation.
  60   virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;
  61   virtual void OnChannelClosing() OVERRIDE;
  62
  63  protected:
  64   virtual ~MediaStreamDispatcherHost();
  65
  66  private:
  67   friend class MockMediaStreamDispatcherHost;
  68
  69   void OnGenerateStream(int render_frame_id,
  70                         int page_request_id,
  71                         const StreamOptions& components,
  72                         const GURL& security_origin,
  73                         bool user_gesture);
  74   void OnCancelGenerateStream(int render_frame_id,
  75                               int page_request_id);
  76   void OnStopStreamDevice(int render_frame_id,
  77                           const std::string& device_id);
  78
  79   void OnEnumerateDevices(int render_frame_id,
  80                           int page_request_id,
  81                           MediaStreamType type,
  82                           const GURL& security_origin);
  83
  84   void OnCancelEnumerateDevices(int render_frame_id,
  85                                 int page_request_id);
  86
  87   void OnOpenDevice(int render_frame_id,
  88                     int page_request_id,
  89                     const std::string& device_id,
  90                     MediaStreamType type,
  91                     const GURL& security_origin);
  92
  93   void OnCloseDevice(int render_frame_id,
  94                      const std::string& label);
  95
  96   void StoreRequest(int render_frame_id,
  97                     int page_request_id,
  98                     const std::string& label);
  99
 100   bool IsURLAllowed(const GURL& url);
 101
 102   int render_process_id_;
 103   ResourceContext::SaltCallback salt_callback_;
 104   MediaStreamManager* media_stream_manager_;
 105
 106   // Owned by ProfileIOData which is guaranteed to outlive MSDH.
 107   ResourceContext* const resource_context_;
 108
 109   DISALLOW_COPY_AND_ASSIGN(MediaStreamDispatcherHost);
 110 };
 111
 112 }  // namespace content
 113
 114 #endif  // CONTENT_BROWSER_RENDERER_HOST_MEDIA_MEDIA_STREAM_DISPATCHER_HOST_H_