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      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_COMMON_DESKTOP_MEDIA_ID_H_
      6 #define CONTENT_PUBLIC_COMMON_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 content {
     16 
     17 // Type used to identify desktop media sources. It's converted to string and
     18 // stored in MediaStreamRequest::requested_video_device_id .
     19 struct CONTENT_EXPORT DesktopMediaID {
     20  public:
     21   enum Type {
     22     TYPE_NONE,
     23     TYPE_SCREEN,
     24     TYPE_WINDOW,
     25   };
     26   typedef intptr_t Id;
     27 
     28   static DesktopMediaID Parse(const std::string& str);
     29 
     30   DesktopMediaID()
     31       : type(TYPE_NONE),
     32         id(0) {
     33   }
     34   DesktopMediaID(Type type, Id id)
     35       : type(type),
     36         id(id) {
     37   }
     38 
     39   // Operators so that DesktopMediaID can be used with STL containers.
     40   bool operator<(const DesktopMediaID& other) const {
     41     return type < other.type || (type == other.type && id < other.id);
     42   }
     43   bool operator==(const DesktopMediaID& other) const {
     44     return type == other.type && id == other.id;
     45   }
     46 
     47   bool is_null() { return type == TYPE_NONE; }
     48 
     49   std::string ToString();
     50 
     51   Type type;
     52   Id id;
     53 };
     54 
     55 }  // namespace content
     56 
     57 #endif  // CONTENT_PUBLIC_COMMON_DESKTOP_MEDIA_ID_H_
     58