device_request_message_filter.h revision cedac228d2dd51db4b79ea1e72c7f249408ee061 
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
16namespace content {
17
18class MediaStreamManager;
19class ResourceContext;
20
21// DeviceRequestMessageFilter used to delegate requests from the
22// MediaStreamCenter.
23class 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_view_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_view_id,
40      int page_request_id,
41      content::MediaStreamRequestResult result) OVERRIDE {}
42  virtual void DeviceStopped(int render_view_id,
43                             const std::string& label,
44                             const StreamDeviceInfo& device) OVERRIDE {}
45  virtual void DeviceOpened(int render_view_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_view_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_
82