1 /* 2 * Copyright (c) 1999-2000, Eric Moon. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions, and the following disclaimer. 11 * 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions, and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * 3. The name of the author may not be used to endorse or promote products 17 * derived from this software without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR "AS IS" AND ANY EXPRESS OR 20 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 21 * OF TITLE, NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY 23 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 24 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 25 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 26 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR 27 * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31 32 // NodeKey.h 33 // * PURPOSE +++++ SUPERCEDED BY LiveNodeIO 20dec99 +++++ 34 // 35 // An IPersistent implementation that stores a string 36 // identifier (key) for a media node whose description 37 // is being imported from or exported to a stream. 38 // 39 // A NodeKey may refer to a user-created node or one 40 // of the following system-defined nodes: 41 // 42 // AUDIO_INPUT 43 // AUDIO_OUTPUT 44 // AUDIO_MIXER 45 // VIDEO_INPUT 46 // VIDEO_OUTPUT 47 // DAC_TIME_SOURCE 48 // SYSTEM_TIME_SOURCE 49 // 50 // * HISTORY 51 // e.moon 7dec99 Begun 52 53 #ifndef __NodeKey_H__ 54 #define __NodeKey_H__ 55 56 #include <MediaDefs.h> 57 #include "StringContent.h" 58 59 #include "cortex_defs.h" 60 61 __BEGIN_CORTEX_NAMESPACE 62 63 class NodeKey : 64 public StringContent { 65 66 public: // content access 67 key()68 const char* key() const { return content.String(); } 69 70 // if the corresponding node doesn't exist, returns 0 node()71 media_node_id node() const { return m_node; } 72 73 public: // *** dtor, default ctors ~NodeKey()74 virtual ~NodeKey() {} NodeKey()75 NodeKey() : m_node(0) {} NodeKey(const NodeKey & clone)76 NodeKey( 77 const NodeKey& clone) { _clone(clone); } 78 NodeKey& operator=( 79 const NodeKey& clone) { _clone(clone); return *this; } 80 81 bool operator<( 82 const NodeKey& other) const { 83 return key() < other.key(); 84 } 85 86 public: // *** IPersistent 87 88 // EXPORT 89 90 virtual void xmlExportBegin( 91 ExportContext& context) const; 92 93 virtual void xmlExportAttributes( 94 ExportContext& context) const; 95 96 virtual void xmlExportContent( 97 ExportContext& context) const; 98 99 virtual void xmlExportEnd( 100 ExportContext& context) const; 101 102 103 private: 104 friend class RouteAppNodeManager; 105 NodeKey(const char * _key,media_node_id _node)106 NodeKey( 107 const char* _key, 108 media_node_id _node) : 109 StringContent(_key), 110 m_node(_node) {} 111 112 private: _clone(const NodeKey & clone)113 inline void _clone( 114 const NodeKey& clone) { 115 content = clone.content; 116 m_node = clone.m_node; 117 } 118 119 media_node_id m_node; 120 121 static const char* const s_element; 122 }; 123 124 __END_CORTEX_NAMESPACE 125 #endif /*__NodeKey_H__ */ 126