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
  29   // MediaStreamRequester implementation.
  30   // TODO(vrk): Replace MediaStreamRequester interface with a single callback so
  31   // we don't have to override all these callbacks we don't care about.
  32   // (crbug.com/249476)
  33   virtual void StreamGenerated(
  34       const std::string& label, const StreamDeviceInfoArray& audio_devices,
  35       const StreamDeviceInfoArray& video_devices) OVERRIDE;
  36   virtual void StreamGenerationFailed(const std::string& label) OVERRIDE;
  37   virtual void StopGeneratedStream(int render_view_id,
  38                                    const std::string& label) OVERRIDE;
  39   virtual void DeviceOpened(const std::string& label,
  40                             const StreamDeviceInfo& video_device) OVERRIDE;
  41   // DevicesEnumerated() is the only callback we're interested in.
  42   virtual void DevicesEnumerated(const std::string& label,
  43                                  const StreamDeviceInfoArray& devices) OVERRIDE;
  44
  45   // BrowserMessageFilter implementation.
  46   virtual bool OnMessageReceived(const IPC::Message& message,
  47                                  bool* message_was_ok) OVERRIDE;
  48   virtual void OnChannelClosing() OVERRIDE;
  49
  50  protected:
  51   virtual ~DeviceRequestMessageFilter();
  52
  53  private:
  54   void OnGetSources(int request_id, const GURL& security_origin);
  55   void HmacDeviceIds(const GURL& origin,
  56                      const StreamDeviceInfoArray& raw_devices,
  57                      StreamDeviceInfoArray* devices_with_guids);
  58
  59   // Owned by ProfileIOData which is guaranteed to outlive DRMF.
  60   ResourceContext* resource_context_;
  61   MediaStreamManager* media_stream_manager_;
  62
  63   struct DeviceRequest;
  64   typedef std::vector<DeviceRequest> DeviceRequestList;
  65   // List of all requests.
  66   DeviceRequestList requests_;
  67
  68   DISALLOW_COPY_AND_ASSIGN(DeviceRequestMessageFilter);
  69 };
  70
  71 }  // namespace content
  72
  73 #endif  // CONTENT_BROWSER_RENDERER_HOST_MEDIA_DEVICE_REQUEST_MESSAGE_FILTER_H_