chrome/browser/media/media_access_handler.h

   1 // Copyright 2015 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 CHROME_BROWSER_MEDIA_MEDIA_ACCESS_HANDLER_H_
   6 #define CHROME_BROWSER_MEDIA_MEDIA_ACCESS_HANDLER_H_
   7
   8 #include "base/callback.h"
   9 #include "content/public/browser/media_request_state.h"
  10 #include "content/public/common/media_stream_request.h"
  11
  12 namespace content {
  13 class WebContents;
  14 }
  15
  16 namespace extensions {
  17 class Extension;
  18 }
  19
  20 // Interface for handling media access requests that are propagated from
  21 // MediaCaptureDevicesDispatcher.
  22 class MediaAccessHandler {
  23  public:
  24   MediaAccessHandler() {}
  25   virtual ~MediaAccessHandler() {}
  26
  27   // Check if the media stream type is supported by MediaAccessHandler.
  28   virtual bool SupportsStreamType(const content::MediaStreamType type,
  29                                   const extensions::Extension* extension) = 0;
  30   // Check media access permission. |extension| is set to NULL if request was
  31   // made from a drive-by page.
  32   virtual bool CheckMediaAccessPermission(
  33       content::WebContents* web_contents,
  34       const GURL& security_origin,
  35       content::MediaStreamType type,
  36       const extensions::Extension* extension) = 0;
  37   // Process media access requests. |extension| is set to NULL if request was
  38   // made from a drive-by page.
  39   virtual void HandleRequest(content::WebContents* web_contents,
  40                              const content::MediaStreamRequest& request,
  41                              const content::MediaResponseCallback& callback,
  42                              const extensions::Extension* extension) = 0;
  43   // Update media request state. Called on UI thread.
  44   virtual void UpdateMediaRequestState(int render_process_id,
  45                                        int render_frame_id,
  46                                        int page_request_id,
  47                                        content::MediaStreamType stream_type,
  48                                        content::MediaRequestState state) {}
  49 };
  50
  51 #endif  // CHROME_BROWSER_MEDIA_MEDIA_ACCESS_HANDLER_H_