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annotate deps/Platinum/Source/Devices/MediaServer/PltSyncMediaBrowser.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 - Synchronous Media Browser
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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 "PltSyncMediaBrowser.h"
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38
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39 NPT_SET_LOCAL_LOGGER("platinum.media.server.syncbrowser")
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40
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41 /*----------------------------------------------------------------------
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42 | PLT_SyncMediaBrowser::PLT_SyncMediaBrowser
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43 +---------------------------------------------------------------------*/
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44 PLT_SyncMediaBrowser::PLT_SyncMediaBrowser(PLT_CtrlPointReference& ctrlPoint,
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45 bool use_cache /* = false */,
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46 PLT_MediaContainerChangesListener* listener /* = NULL */) :
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47 PLT_MediaBrowser(ctrlPoint),
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48 m_ContainerListener(listener),
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49 m_UseCache(use_cache)
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50 {
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51 SetDelegate(this);
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52 }
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53
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54 /*----------------------------------------------------------------------
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55 | PLT_SyncMediaBrowser::~PLT_SyncMediaBrowser
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56 +---------------------------------------------------------------------*/
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57 PLT_SyncMediaBrowser::~PLT_SyncMediaBrowser()
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58 {
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59 }
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60
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61 /* Blocks forever waiting for a response from a request
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62 * It is expected the request to succeed or to timeout and return an error eventually
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63 */
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64 /*----------------------------------------------------------------------
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65 | PLT_SyncMediaBrowser::WaitForResponse
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66 +---------------------------------------------------------------------*/
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67 NPT_Result
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68 PLT_SyncMediaBrowser::WaitForResponse(NPT_SharedVariable& shared_var)
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69 {
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70 return shared_var.WaitUntilEquals(1, 30000);
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71 }
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72
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73 /*----------------------------------------------------------------------
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74 | PLT_SyncMediaBrowser::OnDeviceAdded
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75 +---------------------------------------------------------------------*/
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76 NPT_Result
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77 PLT_SyncMediaBrowser::OnDeviceAdded(PLT_DeviceDataReference& device)
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78 {
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79 NPT_String uuid = device->GetUUID();
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80
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81 // test if it's a media server
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82 PLT_Service* service;
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83 if (NPT_SUCCEEDED(device->FindServiceByType("urn:schemas-upnp-org:service:ContentDirectory:1", service))) {
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84 NPT_AutoLock lock(m_MediaServers);
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85 m_MediaServers.Put(uuid, device);
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86 }
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87
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88 return PLT_MediaBrowser::OnDeviceAdded(device);
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89 }
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90
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91 /*----------------------------------------------------------------------
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92 | PLT_SyncMediaBrowser::OnDeviceRemoved
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93 +---------------------------------------------------------------------*/
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94 NPT_Result
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95 PLT_SyncMediaBrowser::OnDeviceRemoved(PLT_DeviceDataReference& device)
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96 {
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97 NPT_String uuid = device->GetUUID();
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98
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99 // Remove from our list of servers first if found
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100 {
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101 NPT_AutoLock lock(m_MediaServers);
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102 m_MediaServers.Erase(uuid);
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103 }
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104
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105 // clear cache for that device
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106 if (m_UseCache) m_Cache.Clear(device.AsPointer()->GetUUID());
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107
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108 return PLT_MediaBrowser::OnDeviceRemoved(device);
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109 }
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110
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111 /*----------------------------------------------------------------------
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112 | PLT_SyncMediaBrowser::Find
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113 +---------------------------------------------------------------------*/
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114 NPT_Result
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115 PLT_SyncMediaBrowser::Find(const char* ip, PLT_DeviceDataReference& device)
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116 {
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117 NPT_AutoLock lock(m_MediaServers);
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118 const NPT_List<PLT_DeviceMapEntry*>::Iterator it =
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119 m_MediaServers.GetEntries().Find(PLT_DeviceMapFinderByIp(ip));
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120 if (it) {
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121 device = (*it)->GetValue();
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122 return NPT_SUCCESS;
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123 }
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124 return NPT_FAILURE;
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125 }
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126
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127 /*----------------------------------------------------------------------
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128 | PLT_SyncMediaBrowser::OnBrowseResult
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129 +---------------------------------------------------------------------*/
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130 void
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131 PLT_SyncMediaBrowser::OnBrowseResult(NPT_Result res,
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132 PLT_DeviceDataReference& device,
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133 PLT_BrowseInfo* info,
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134 void* userdata)
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135 {
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136 NPT_COMPILER_UNUSED(device);
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137
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138 if (!userdata) return;
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139
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140 PLT_BrowseDataReference* data = (PLT_BrowseDataReference*) userdata;
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141 (*data)->res = res;
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142 if (NPT_SUCCEEDED(res) && info) {
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143 (*data)->info = *info;
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144 }
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145 (*data)->shared_var.SetValue(1);
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146 delete data;
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147 }
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148
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149 /*----------------------------------------------------------------------
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150 | PLT_SyncMediaBrowser::OnMSStateVariablesChanged
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151 +---------------------------------------------------------------------*/
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152 void
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153 PLT_SyncMediaBrowser::OnMSStateVariablesChanged(PLT_Service* service,
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154 NPT_List<PLT_StateVariable*>* vars)
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155 {
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156 NPT_AutoLock lock(m_MediaServers);
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157
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158 PLT_DeviceDataReference device;
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159 const NPT_List<PLT_DeviceMapEntry*>::Iterator it =
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160 m_MediaServers.GetEntries().Find(PLT_DeviceMapFinderByUUID(service->GetDevice()->GetUUID()));
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161 if (!it) return; // device with this service has gone away
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162
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163 device = (*it)->GetValue();
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164 PLT_StateVariable* var = PLT_StateVariable::Find(*vars, "ContainerUpdateIDs");
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165 if (var) {
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166 // variable found, parse value
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167 NPT_String value = var->GetValue();
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168 NPT_String item_id, update_id;
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169 int index;
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170
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171 while (value.GetLength()) {
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172 // look for container id
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173 index = value.Find(',');
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174 if (index < 0) break;
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175 item_id = value.Left(index);
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176 value = value.SubString(index+1);
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177
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178 // look for update id
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179 if (value.GetLength()) {
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180 index = value.Find(',');
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181 update_id = (index<0)?value:value.Left(index);
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182 value = (index<0)?"":value.SubString(index+1);
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183
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184 // clear cache for that device
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185 if (m_UseCache) m_Cache.Clear(device->GetUUID(), item_id);
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186
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187 // notify listener
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188 if (m_ContainerListener) m_ContainerListener->OnContainerChanged(device, item_id, update_id);
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189 }
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190 }
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191 }
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192 }
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193
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194 /*----------------------------------------------------------------------
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195 | PLT_SyncMediaBrowser::BrowseSync
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196 +---------------------------------------------------------------------*/
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197 NPT_Result
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198 PLT_SyncMediaBrowser::BrowseSync(PLT_BrowseDataReference& browse_data,
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199 PLT_DeviceDataReference& device,
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200 const char* object_id,
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201 NPT_Int32 index,
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202 NPT_Int32 count,
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203 bool browse_metadata,
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204 const char* filter,
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205 const char* sort)
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206 {
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207 NPT_Result res;
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208
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209 browse_data->shared_var.SetValue(0);
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210
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211 // send off the browse packet. Note that this will
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212 // not block. There is a call to WaitForResponse in order
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213 // to block until the response comes back.
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214 res = PLT_MediaBrowser::Browse(device,
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215 (const char*)object_id,
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216 index,
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217 count,
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218 browse_metadata,
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219 filter,
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220 sort,
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221 new PLT_BrowseDataReference(browse_data));
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222 NPT_CHECK_SEVERE(res);
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223
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224 return WaitForResponse(browse_data->shared_var);
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225 }
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226
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227 /*----------------------------------------------------------------------
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228 | PLT_SyncMediaBrowser::BrowseSync
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229 +---------------------------------------------------------------------*/
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230 NPT_Result
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231 PLT_SyncMediaBrowser::BrowseSync(PLT_DeviceDataReference& device,
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232 const char* object_id,
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233 PLT_MediaObjectListReference& list)
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234 {
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235 NPT_Result res = NPT_FAILURE;
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236 NPT_Int32 index = 0;
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237
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238 // reset output params
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239 list = NULL;
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240
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241 // look into cache first
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242 if (m_UseCache && NPT_SUCCEEDED(m_Cache.Get(device->GetUUID(), object_id, list))) return NPT_SUCCESS;
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243
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244 do {
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245 PLT_BrowseDataReference browse_data(new PLT_BrowseData());
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246
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247 // send off the browse packet. Note that this will
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248 // not block. There is a call to WaitForResponse in order
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249 // to block until the response comes back.
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250 res = BrowseSync(
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251 browse_data,
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252 device,
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253 (const char*)object_id,
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254 index,
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255 1024,
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256 false,
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257 "*",
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258 "");
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259 NPT_CHECK_LABEL_WARNING(res, done);
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260
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261 if (NPT_FAILED(browse_data->res)) {
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262 res = browse_data->res;
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263 NPT_CHECK_LABEL_WARNING(res, done);
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264 }
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265
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266 if (browse_data->info.items->GetItemCount() == 0)
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267 break;
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268
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269 if (list.IsNull()) {
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270 list = browse_data->info.items;
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271 } else {
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272 list->Add(*browse_data->info.items);
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273 // clear the list items so that the data inside is not
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274 // cleaned up by PLT_MediaItemList dtor since we copied
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275 // each pointer into the new list.
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276 browse_data->info.items->Clear();
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277 }
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278
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279 // stop now if our list contains exactly what the server said it had
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280 if (browse_data->info.tm && browse_data->info.tm == list->GetItemCount())
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281 break;
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282
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283 // ask for the next chunk of entries
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284 index = list->GetItemCount();
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285 } while(1);
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286
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287 done:
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288 // cache the result
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289 if (m_UseCache && NPT_SUCCEEDED(res) && !list.IsNull() && list->GetItemCount()) {
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290 m_Cache.Put(device->GetUUID(), object_id, list);
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291 }
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292
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293 // clear entire cache data for device if failed, the device could be gone
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294 if (NPT_FAILED(res) && m_UseCache) m_Cache.Clear(device->GetUUID());
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295
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296 return res;
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297 }
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298
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299 /*----------------------------------------------------------------------
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300 | PLT_SyncMediaBrowser::IsCached
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301 +---------------------------------------------------------------------*/
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302 bool
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303 PLT_SyncMediaBrowser::IsCached(const char* uuid, const char* object_id)
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304 {
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305 NPT_AutoLock lock(m_MediaServers);
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306 const NPT_List<PLT_DeviceMapEntry*>::Iterator it =
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307 m_MediaServers.GetEntries().Find(PLT_DeviceMapFinderByUUID(uuid));
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308 if (!it) {
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309 m_Cache.Clear(uuid);
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310 return false; // device with this service has gone away
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311 }
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312
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313 PLT_MediaObjectListReference list;
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314 return NPT_SUCCEEDED(m_Cache.Get(uuid, object_id, list))?true:false;
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315 }
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316