1 /* |
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2 * Copyright (c) 2008-2010 Nokia Corporation and/or its subsidiary(-ies). |
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3 * All rights reserved. |
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4 * This component and the accompanying materials are made available |
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5 * under the terms of "Eclipse Public License v1.0" |
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6 * which accompanies this distribution, and is available |
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7 * at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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8 * |
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9 * Initial Contributors: |
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10 * Nokia Corporation - initial contribution. |
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11 * |
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12 * Contributors: |
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13 * |
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14 * Description: Pushes data to existing stream from outside |
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15 * |
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16 */ |
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17 |
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18 |
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19 #ifndef C_CDUNDATAPUSHER_H |
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20 #define C_CDUNDATAPUSHER_H |
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21 |
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22 #include "DunTransporter.h" |
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23 |
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24 class MDunCompletionReporter; |
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25 |
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26 /** |
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27 * Class used for storing data related to data push |
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28 * (data coming from MDunStreamManipulator::NotifyDataPushRequest()) |
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29 * |
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30 * @lib dunutils.lib |
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31 * @since S60 v3.2 |
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32 */ |
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33 NONSHARABLE_CLASS( TDunDataPush ) |
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34 { |
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35 |
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36 public: |
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37 |
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38 /** |
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39 * Data to push to the stream (not copied) |
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40 */ |
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41 const TDesC8* iDataToPush; |
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42 |
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43 /** |
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44 * Callback to call when data is processed by the stream |
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45 * If this is NULL then no callback will be made |
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46 */ |
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47 MDunCompletionReporter* iCallback; |
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48 |
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49 }; |
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50 |
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51 /** |
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52 * Class for notifications of stream manipulator's completion events |
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53 * |
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54 * @lib dunutils.lib |
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55 * @since S60 v3.2 |
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56 */ |
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57 NONSHARABLE_CLASS( MDunCompletionReporter ) |
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58 { |
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59 |
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60 public: |
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61 |
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62 /** |
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63 * Gets called when data from |
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64 * MDunStreamManipulator::NotifyDataPushRequest() has been processed and |
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65 * CDunDownstream is ready to process more data. |
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66 * |
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67 * @since S60 5.0 |
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68 * @param aAllPushed ETrue if all in the queue were pushed, EFalse otherwise |
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69 * @return None |
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70 */ |
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71 virtual void NotifyDataPushComplete( TBool aAllPushed ) = 0; |
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72 |
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73 }; |
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74 |
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75 /** |
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76 * Class for pushing data to existing CDunDownstream stream from outside |
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77 * |
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78 * @lib dunutils.lib |
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79 * @since S60 v3.2 |
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80 */ |
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81 NONSHARABLE_CLASS( CDunDataPusher ) : public CActive |
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82 { |
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83 |
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84 public: |
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85 |
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86 /** |
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87 * Two-phased constructor. |
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88 * @param aParent Parent class owning this friend class (CDunDownstream) |
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89 * @param aStreamCallback Callback to call when events processed |
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90 * @return Instance of self |
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91 */ |
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92 static CDunDataPusher* NewL( CDunDownstream& aParent, |
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93 MDunCompletionReporter* aStreamCallback ); |
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94 |
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95 /** |
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96 * Destructor. |
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97 */ |
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98 virtual ~CDunDataPusher(); |
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99 |
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100 /** |
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101 * Resets data to initial values |
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102 * |
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103 * @since S60 3.2 |
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104 * @return None |
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105 */ |
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106 void ResetData(); |
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107 |
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108 /** |
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109 * Sets media to be used for this endpoint |
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110 * |
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111 * @since S60 3.2 |
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112 * @param aComm RComm pointer to use as the endpoint |
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113 * @return Symbian error code on error, KErrNone otherwise |
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114 */ |
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115 TInt SetMedia( RComm* aComm ); |
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116 |
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117 /** |
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118 * Sets media to be used for this endpoint |
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119 * |
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120 * @since S60 3.2 |
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121 * @param aSocket RSocket pointer to use as the endpoint |
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122 * @return Symbian error code on error, KErrNone otherwise |
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123 */ |
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124 TInt SetMedia( RSocket* aSocket ); |
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125 |
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126 /** |
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127 * Adds event notification to queue |
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128 * |
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129 * @since S60 3.2 |
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130 * @param aDataToPush Data to push to the stream (not copied) |
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131 * @param aCallback Callback to call when data is processed by the stream |
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132 * @return Symbian error code on error, KErrNone otherwise |
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133 */ |
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134 TInt AddToEventQueue( const TDesC8* aDataToPush, |
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135 MDunCompletionReporter* aCallback ); |
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136 |
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137 /** |
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138 * Finds an event from queue |
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139 * |
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140 * @since S60 5.0 |
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141 * @param aDataToPush Data to push to the stream (not copied) |
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142 * @return Index of found event, Symbian error code otherwise |
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143 */ |
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144 TInt FindEventFromQueue( const TDesC8* aDataToPush ); |
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145 |
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146 /** |
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147 * Stops one event in the event queue |
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148 * |
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149 * @since S60 5.0 |
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150 * @param aDataToPush Data to push to the stream (not copied) |
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151 * @return Symbian error code on error, KErrNone otherwise |
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152 */ |
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153 TInt StopOneEvent( const TDesC8* aDataToPush ); |
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154 |
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155 /** |
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156 * Sends queued data in round robin |
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157 * |
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158 * @since S60 3.2 |
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159 * @return ETrue if sending started, EFalse if nothing to do |
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160 */ |
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161 TBool SendQueuedData(); |
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162 |
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163 /** |
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164 * Stops sending for write endpoint |
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165 * |
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166 * @since S60 3.2 |
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167 * @return Symbian error code on error, KErrNone otherwise |
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168 */ |
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169 TInt Stop(); |
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170 |
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171 /** |
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172 * Stops sending for write endpoint and clears event queue |
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173 * |
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174 * @since S60 3.2 |
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175 * @return Symbian error code on error, KErrNone otherwise |
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176 */ |
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177 TInt StopAndClearQueue(); |
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178 |
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179 /** |
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180 * Signals completion status in round robin and clears event queue |
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181 * |
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182 * @return Symbian error code on error, KErrNone otherwise |
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183 * @return None |
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184 */ |
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185 TInt SignalCompletionAndClearQueue(); |
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186 |
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187 private: |
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188 |
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189 CDunDataPusher( CDunDownstream& aParent, |
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190 MDunCompletionReporter* aStreamCallback ); |
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191 |
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192 void ConstructL(); |
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193 |
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194 /** |
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195 * Initializes this class |
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196 * |
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197 * @since S60 3.2 |
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198 * @return None |
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199 */ |
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200 void Initialize(); |
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201 |
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202 /** |
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203 * Manages one event's data push |
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204 * |
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205 * @since S60 3.2 |
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206 * @return None |
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207 */ |
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208 TInt ManageOneEvent(); |
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209 |
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210 /** |
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211 * Check whether an error code is severe error or not |
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212 * |
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213 * @since S60 3.2 |
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214 * @param aError Error code to check for severity |
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215 * @param aIsError ETrue if error code is error, EFalse if not error |
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216 * @return ETrue if severe error detected, EFalse if not severe error |
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217 */ |
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218 TBool ProcessErrorCondition( TInt aError, TBool& aIsError ); |
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219 |
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220 // from base class CActive |
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221 |
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222 /** |
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223 * From CActive. |
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224 * Gets called when endpoint data write complete |
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225 * |
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226 * @since S60 3.2 |
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227 * @return None |
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228 */ |
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229 void RunL(); |
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230 |
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231 /** |
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232 * From CActive. |
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233 * Gets called on cancel |
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234 * |
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235 * @since S60 3.2 |
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236 * @return None |
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237 */ |
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238 void DoCancel(); |
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239 |
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240 private: // data |
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241 |
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242 /** |
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243 * Parent class owning this friend class (CDunDownstream) |
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244 */ |
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245 CDunDownstream& iParent; |
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246 |
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247 /** |
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248 * Callback to call when notification via MDunCompletionReporter to be made |
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249 * Not own. |
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250 */ |
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251 MDunCompletionReporter* iStreamCallback; |
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252 |
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253 /** |
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254 * Event queue for pushed data requests |
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255 */ |
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256 RArray<TDunDataPush> iEventQueue; |
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257 |
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258 /** |
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259 * Current state of data push: active or inactive |
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260 */ |
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261 TDunState iPushState; |
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262 |
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263 /** |
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264 * Index of current event to serve |
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265 */ |
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266 TInt iEventIndex; |
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267 |
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268 /** |
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269 * RSocket object of local media side |
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270 * If this is set then iComm is not used |
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271 * Not own. |
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272 */ |
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273 RSocket* iSocket; |
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274 |
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275 /** |
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276 * RComm object of local media or network side |
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277 * If this is set then iSocket is not used |
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278 * Not own. |
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279 */ |
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280 RComm* iComm; |
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281 |
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282 }; |
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283 |
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284 #endif // C_DUNDATAPUSHER_H |
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