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OpenNI 1.5.4
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XnQueue.h
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00001 /**************************************************************************** 00002 * * 00003 * OpenNI 1.x Alpha * 00004 * Copyright (C) 2011 PrimeSense Ltd. * 00005 * * 00006 * This file is part of OpenNI. * 00007 * * 00008 * OpenNI is free software: you can redistribute it and/or modify * 00009 * it under the terms of the GNU Lesser General Public License as published * 00010 * by the Free Software Foundation, either version 3 of the License, or * 00011 * (at your option) any later version. * 00012 * * 00013 * OpenNI is distributed in the hope that it will be useful, * 00014 * but WITHOUT ANY WARRANTY; without even the implied warranty of * 00015 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * 00016 * GNU Lesser General Public License for more details. * 00017 * * 00018 * You should have received a copy of the GNU Lesser General Public License * 00019 * along with OpenNI. If not, see <http://www.gnu.org/licenses/>. * 00020 * * 00021 ****************************************************************************/ 00022 #ifndef _XN_QUEUE_H 00023 #define _XN_QUEUE_H 00024 00025 //--------------------------------------------------------------------------- 00026 // Includes 00027 //--------------------------------------------------------------------------- 00028 #include "XnList.h" 00029 00030 //--------------------------------------------------------------------------- 00031 // Types 00032 //--------------------------------------------------------------------------- 00036 class XnQueue 00037 { 00038 public: 00042 XnQueue() {} 00046 virtual ~XnQueue() {} 00047 00051 virtual XnStatus Init() 00052 { 00053 return (XN_STATUS_OK); 00054 } 00055 00063 virtual XnStatus Push(XnValue const& value) 00064 { 00065 XnStatus nRetVal = XN_STATUS_OK; 00066 00067 nRetVal = m_List.AddLast(value); 00068 XN_IS_STATUS_OK(nRetVal); 00069 00070 return (XN_STATUS_OK); 00071 } 00079 virtual XnStatus Pop(XnValue& value) 00080 { 00081 if (IsEmpty()) 00082 { 00083 return XN_STATUS_IS_EMPTY; 00084 } 00085 00086 value = *(m_List.begin()); 00087 return m_List.Remove(m_List.begin()); 00088 } 00089 00095 XnValue const& Top() const 00096 { 00097 return *(m_List.begin()); 00098 } 00099 00105 XnValue& Top() 00106 { 00107 return *(m_List.begin()); 00108 } 00109 00113 XnBool IsEmpty() const 00114 { 00115 return m_List.IsEmpty(); 00116 } 00117 00121 virtual XnUInt32 Size() const 00122 { 00123 return m_List.Size(); 00124 } 00125 00126 private: 00127 XN_DISABLE_COPY_AND_ASSIGN(XnQueue); 00128 00130 XnList m_List; 00131 }; 00132 00138 #define XN_DECLARE_QUEUE_WITH_TRANSLATOR_DECL(decl, Type, ClassName, Translator, base) \ 00139 class decl ClassName : public base \ 00140 { \ 00141 public: \ 00142 ClassName() {} \ 00143 ~ClassName() \ 00144 { \ 00145 /* We do this using Pop() to make sure memory is freed. */ \ 00146 Type dummy; \ 00147 while (Size() != 0) \ 00148 Pop(dummy); \ 00149 } \ 00150 XnStatus Push(Type const& value) \ 00151 { \ 00152 XnValue val = Translator::CreateValueCopy(value); \ 00153 XnStatus nRetVal = base::Push(val); \ 00154 if (nRetVal != XN_STATUS_OK) \ 00155 { \ 00156 Translator::FreeValue(val); \ 00157 return (nRetVal); \ 00158 } \ 00159 return XN_STATUS_OK; \ 00160 } \ 00161 XnStatus Pop(Type& value) \ 00162 { \ 00163 XnValue val; \ 00164 XnStatus nRetVal = base::Pop(val); \ 00165 if (nRetVal != XN_STATUS_OK) return (nRetVal); \ 00166 value = Translator::GetFromValue(val); \ 00167 Translator::FreeValue(val); \ 00168 return XN_STATUS_OK; \ 00169 } \ 00170 inline Type const& Top() const { return Translator::GetFromValue(base::Top()); }\ 00171 inline Type& Top() { return Translator::GetFromValue(base::Top()); } \ 00172 private: \ 00173 XN_DISABLE_COPY_AND_ASSIGN(ClassName); \ 00174 }; 00175 00181 #define XN_DECLARE_QUEUE_WITH_TRANSLATOR(Type, ClassName, Translator, base) \ 00182 XN_DECLARE_QUEUE_WITH_TRANSLATOR_DECL(, Type, ClassName, Translator, base) 00183 00188 #define XN_DECLARE_QUEUE_DECL(decl, Type, ClassName) \ 00189 XN_DECLARE_DEFAULT_VALUE_TRANSLATOR_DECL(decl, Type, XN_DEFAULT_TRANSLATOR_NAME(ClassName)) \ 00190 XN_DECLARE_QUEUE_WITH_TRANSLATOR_DECL(decl, Type, ClassName, XN_DEFAULT_TRANSLATOR_NAME(ClassName), XnQueue) 00191 00195 #define XN_DECLARE_QUEUE(Type, ClassName) \ 00196 XN_DECLARE_QUEUE_DECL(, Type, ClassName) 00197 00198 #endif // _XN_QUEUE_H
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