src/content/browser/renderer_host/media/device_request_message_filter.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_RENDERER_HOST_MEDIA_DEVICE_REQUEST_MESSAGE_FILTER_H_
   6 #define CONTENT_BROWSER_RENDERER_HOST_MEDIA_DEVICE_REQUEST_MESSAGE_FILTER_H_
   7
   8 #include <map>
   9 #include <string>
  10
  11 #include "base/synchronization/lock.h"
  12 #include "content/browser/renderer_host/media/media_stream_requester.h"
  13 #include "content/common/content_export.h"
  14 #include "content/public/browser/browser_message_filter.h"
  15
  16 namespace content {
  17
  18 class MediaStreamManager;
  19 class ResourceContext;
  20
  21 // DeviceRequestMessageFilter used to delegate requests from the
  22 // MediaStreamCenter.
  23 class CONTENT_EXPORT DeviceRequestMessageFilter : public BrowserMessageFilter,
  24                                                   public MediaStreamRequester {
  25  public:
  26   DeviceRequestMessageFilter(ResourceContext* resource_context,
  27                              MediaStreamManager* media_stream_manager,
  28                              int render_process_id);
  29
  30   // MediaStreamRequester implementation.
  31   // TODO(vrk): Replace MediaStreamRequester interface with a single callback so
  32   // we don't have to override all these callbacks we don't care about.
  33   // (crbug.com/249476)
  34   virtual void StreamGenerated(
  35       int render_frame_id, int page_request_id, const std::string& label,
  36       const StreamDeviceInfoArray& audio_devices,
  37       const StreamDeviceInfoArray& video_devices) OVERRIDE {}
  38   virtual void StreamGenerationFailed(
  39       int render_frame_id,
  40       int page_request_id,
  41       content::MediaStreamRequestResult result) OVERRIDE {}
  42   virtual void DeviceStopped(int render_frame_id,
  43                              const std::string& label,
  44                              const StreamDeviceInfo& device) OVERRIDE {}
  45   virtual void DeviceOpened(int render_frame_id,
  46                             int page_request_id,
  47                             const std::string& label,
  48                             const StreamDeviceInfo& video_device) OVERRIDE {}
  49   // DevicesEnumerated() is the only callback we're interested in.
  50   virtual void DevicesEnumerated(int render_frame_id,
  51                                  int page_request_id,
  52                                  const std::string& label,
  53                                  const StreamDeviceInfoArray& devices) OVERRIDE;
  54
  55   // BrowserMessageFilter implementation.
  56   virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;
  57   virtual void OnChannelClosing() OVERRIDE;
  58
  59  protected:
  60   virtual ~DeviceRequestMessageFilter();
  61
  62  private:
  63   void OnGetSources(int request_id, const GURL& security_origin);
  64
  65   // Owned by ProfileIOData which is guaranteed to outlive DRMF.
  66   ResourceContext* resource_context_;
  67   MediaStreamManager* media_stream_manager_;
  68
  69   struct DeviceRequest;
  70   typedef std::vector<DeviceRequest> DeviceRequestList;
  71   // List of all requests.
  72   DeviceRequestList requests_;
  73
  74   int render_process_id_;
  75
  76   DISALLOW_COPY_AND_ASSIGN(DeviceRequestMessageFilter);
  77 };
  78
  79 }  // namespace content
  80
  81 #endif  // CONTENT_BROWSER_RENDERER_HOST_MEDIA_DEVICE_REQUEST_MESSAGE_FILTER_H_