1 /* 2 * Copyright 2009 Google Inc. 3 * Author: lexnikitin@google.com (Alexey Nikitin) 4 * 5 * V4LLookup provides basic functionality to work with V2L2 devices in Linux 6 * The functionality is implemented as a class with virtual methods for 7 * the purpose of unit testing. 8 */ 9 #ifndef TALK_MEDIA_DEVICES_V4LLOOKUP_H_ 10 #define TALK_MEDIA_DEVICES_V4LLOOKUP_H_ 11 12 #include <string> 13 14 #ifdef LINUX 15 namespace cricket { 16 class V4LLookup { 17 public: ~V4LLookup()18 virtual ~V4LLookup() {} 19 IsV4L2Device(const std::string & device_path)20 static bool IsV4L2Device(const std::string& device_path) { 21 return GetV4LLookup()->CheckIsV4L2Device(device_path); 22 } 23 SetV4LLookup(V4LLookup * v4l_lookup)24 static void SetV4LLookup(V4LLookup* v4l_lookup) { 25 v4l_lookup_ = v4l_lookup; 26 } 27 GetV4LLookup()28 static V4LLookup* GetV4LLookup() { 29 if (!v4l_lookup_) { 30 v4l_lookup_ = new V4LLookup(); 31 } 32 return v4l_lookup_; 33 } 34 35 protected: 36 static V4LLookup* v4l_lookup_; 37 // Making virtual so it is easier to mock 38 virtual bool CheckIsV4L2Device(const std::string& device_path); 39 }; 40 41 } // namespace cricket 42 43 #endif // LINUX 44 #endif // TALK_MEDIA_DEVICES_V4LLOOKUP_H_ 45