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annotate deps/Platinum/Source/Devices/MediaServer/PltMediaCache.cpp @ 0:3425707ddbf6

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author fraserofthenight
date Mon, 06 Jul 2009 08:06:28 -0700
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1 /*****************************************************************
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2 |
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3 | Platinum - AV Media Cache
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4 |
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5 | Copyright (c) 2004-2008, Plutinosoft, LLC.
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6 | All rights reserved.
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7 | http://www.plutinosoft.com
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8 |
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9 | This program is free software; you can redistribute it and/or
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10 | modify it under the terms of the GNU General Public License
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11 | as published by the Free Software Foundation; either version 2
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12 | of the License, or (at your option) any later version.
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13 |
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14 | OEMs, ISVs, VARs and other distributors that combine and
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15 | distribute commercially licensed software with Platinum software
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16 | and do not wish to distribute the source code for the commercially
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17 | licensed software under version 2, or (at your option) any later
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18 | version, of the GNU General Public License (the "GPL") must enter
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19 | into a commercial license agreement with Plutinosoft, LLC.
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20 |
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21 | This program is distributed in the hope that it will be useful,
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22 | but WITHOUT ANY WARRANTY; without even the implied warranty of
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23 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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24 | GNU General Public License for more details.
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25 |
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26 | You should have received a copy of the GNU General Public License
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27 | along with this program; see the file LICENSE.txt. If not, write to
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28 | the Free Software Foundation, Inc.,
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29 | 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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30 | http://www.gnu.org/licenses/gpl-2.0.html
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31 |
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32 ****************************************************************/
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33
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34 /*----------------------------------------------------------------------
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35 | includes
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36 +---------------------------------------------------------------------*/
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37 #include "PltMediaCache.h"
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38
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39 NPT_SET_LOCAL_LOGGER("platinum.media.server.cache")
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40
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41 /*----------------------------------------------------------------------
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42 | PLT_MediaCache::PLT_MediaCache
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43 +---------------------------------------------------------------------*/
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44 PLT_MediaCache::PLT_MediaCache()
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45 {
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46 }
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47
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48 /*----------------------------------------------------------------------
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49 | PLT_MediaCache::~PLT_MediaCache
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50 +---------------------------------------------------------------------*/
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51 PLT_MediaCache::~PLT_MediaCache()
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52 {
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53 }
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54
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55 /*----------------------------------------------------------------------
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56 | PLT_MediaCache::GenerateKey
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57 +---------------------------------------------------------------------*/
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58 NPT_String
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59 PLT_MediaCache::GenerateKey(const char* device_uuid,
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60 const char* item_id)
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61 {
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62 NPT_String key = "upnp://";
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63 key += device_uuid;
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64 key += "/";
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65 key += item_id;
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66
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67 return key;
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68 }
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69
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70 /*----------------------------------------------------------------------
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71 | PLT_MediaCache::Clear
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72 +---------------------------------------------------------------------*/
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73 NPT_Result
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74 PLT_MediaCache::Clear(const char* device_uuid,
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75 const char* item_id)
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76 {
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77 NPT_AutoLock lock(m_Mutex);
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78
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79 NPT_String key = GenerateKey(device_uuid, item_id);
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80 if (key.GetLength() == 0) return NPT_ERROR_INVALID_PARAMETERS;
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81
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82 NPT_List<PLT_MediaCacheEntry*>::Iterator entries = m_Items.GetEntries().GetFirstItem();
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83 NPT_List<PLT_MediaCacheEntry*>::Iterator entry;
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84 while (entries) {
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85 entry = entries++;
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86 if ((*entry)->GetKey() == (key)) {
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87 m_Items.Erase(key);
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88 return NPT_SUCCESS;
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89 }
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90 }
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91
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92 return NPT_FAILURE;
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93 }
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94
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95 /*----------------------------------------------------------------------
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96 | PLT_MediaCache::Clear
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97 +---------------------------------------------------------------------*/
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98 NPT_Result
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99 PLT_MediaCache::Clear(const char* device_uuid)
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100 {
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101 NPT_AutoLock lock(m_Mutex);
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102
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103 if (!device_uuid) return m_Items.Clear();
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104
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105 NPT_String key = GenerateKey(device_uuid, "");
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106 NPT_List<PLT_MediaCacheEntry*>::Iterator entries = m_Items.GetEntries().GetFirstItem();
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107 NPT_List<PLT_MediaCacheEntry*>::Iterator entry;
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108 while (entries) {
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109 entry = entries++;
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110 NPT_String entry_key = (*entry)->GetKey();
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111 if (entry_key.StartsWith(key)) {
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112 m_Items.Erase(entry_key);
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113 }
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114 }
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115
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116 return NPT_SUCCESS;
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117 }
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118
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119 /*----------------------------------------------------------------------
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120 | PLT_MediaCache::Put
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121 +---------------------------------------------------------------------*/
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122 NPT_Result
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123 PLT_MediaCache::Put(const char* device_uuid,
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124 const char* item_id,
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125 PLT_MediaObjectListReference& list)
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126 {
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127 NPT_AutoLock lock(m_Mutex);
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128
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129 NPT_String key = GenerateKey(device_uuid, item_id);
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130 if (key.GetLength() == 0) return NPT_ERROR_INVALID_PARAMETERS;
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131
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132 m_Items.Erase(key);
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133 return m_Items.Put(key, list);
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134 }
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135
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136 /*----------------------------------------------------------------------
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137 | PLT_MediaCache::Get
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138 +---------------------------------------------------------------------*/
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139 NPT_Result
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140 PLT_MediaCache::Get(const char* device_uuid,
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141 const char* item_id,
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142 PLT_MediaObjectListReference& list)
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143 {
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144 NPT_AutoLock lock(m_Mutex);
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145
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146 NPT_String key = GenerateKey(device_uuid, item_id);
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147 if (key.GetLength() == 0) return NPT_ERROR_INVALID_PARAMETERS;
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148
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149 PLT_MediaObjectListReference* val = NULL;
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150 NPT_CHECK_FINE(m_Items.Get(key, val));
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151
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152 list = *val;
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153 return NPT_SUCCESS;
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154 }
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155