Home | History | Annotate | Download | only in browser 
      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_PUBLIC_BROWSER_DESKTOP_MEDIA_ID_H_
      6 #define CONTENT_PUBLIC_BROWSER_DESKTOP_MEDIA_ID_H_
      7 
      8 #include <string>
      9 
     10 #include "base/basictypes.h"
     11 #include "base/strings/string_number_conversions.h"
     12 #include "base/strings/string_util.h"
     13 #include "content/common/content_export.h"
     14 
     15 namespace aura {
     16 class Window;
     17 }  // namespace aura
     18 
     19 namespace content {
     20 
     21 // Type used to identify desktop media sources. It's converted to string and
     22 // stored in MediaStreamRequest::requested_video_device_id .
     23 struct CONTENT_EXPORT DesktopMediaID {
     24  public:
     25   enum Type {
     26     TYPE_NONE,
     27     TYPE_SCREEN,
     28     TYPE_WINDOW,
     29     TYPE_AURA_WINDOW,
     30   };
     31   typedef intptr_t Id;
     32 
     33 #if defined(USE_AURA)
     34   // Assigns integer identifier to the |window| and returns DesktopMediaID of
     35   // type TYPE_AURA_WINDOW that corresponds to that |window|.
     36   static DesktopMediaID RegisterAuraWindow(aura::Window* window);
     37 
     38   // For DesktopMediaID of type TYPE_AURA_WINDOW returns the |window| that was
     39   // previously registered using RegisterAuraWindow().
     40   static aura::Window* GetAuraWindowById(const DesktopMediaID& id);
     41 #endif  // defined(USE_AURA)
     42 
     43   static DesktopMediaID Parse(const std::string& str);
     44 
     45   DesktopMediaID()
     46       : type(TYPE_NONE),
     47         id(0) {
     48   }
     49   DesktopMediaID(Type type, Id id)
     50       : type(type),
     51         id(id) {
     52   }
     53 
     54   // Operators so that DesktopMediaID can be used with STL containers.
     55   bool operator<(const DesktopMediaID& other) const {
     56     return type < other.type || (type == other.type && id < other.id);
     57   }
     58   bool operator==(const DesktopMediaID& other) const {
     59     return type == other.type && id == other.id;
     60   }
     61 
     62   bool is_null() { return type == TYPE_NONE; }
     63 
     64   std::string ToString();
     65 
     66   Type type;
     67   Id id;
     68 };
     69 
     70 }  // namespace content
     71 
     72 #endif  // CONTENT_PUBLIC_BROWSER_DESKTOP_MEDIA_ID_H_
     73