1 /* |
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2 * Copyright (c) 2005-2006 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: Stream to memorybased chunk |
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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 |
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20 #ifndef __FOTAENGSTREAM_H__ |
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21 #define __FOTAENGSTREAM_H__ |
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22 |
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23 // INCLUDES |
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24 #include <s32strm.h> |
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25 #include <s32buf.h> |
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26 #include <e32svr.h> |
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27 |
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28 // FORWARD DECLARATIONS |
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29 class RFotaEngineSession; |
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30 class RFotaWriteStream; |
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31 |
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32 |
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33 const TInt KDefaultWriteLimit( 5000000 ); |
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34 |
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35 // CLASS DECLARATION |
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36 /** |
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37 * Memory buffer |
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38 * |
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39 * Saves streams data to chunk. |
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40 * |
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41 * @lib fotaengine.lib |
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42 * @since Series 60 v3.1 |
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43 */ |
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44 class TDP2StreamBuf : public TStreamBuf |
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45 { |
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46 friend class RFotaWriteStream; |
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47 |
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48 public: |
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49 |
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50 TDP2StreamBuf (); |
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51 |
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52 /** Resets write area |
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53 * |
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54 * @param None |
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55 * @return None |
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56 */ |
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57 void ResetL(); |
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58 |
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59 private: |
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60 |
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61 /** Handles overflow of write area |
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62 * |
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63 * @param None |
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64 * @return None |
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65 */ |
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66 virtual void OverflowL(); |
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67 |
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68 |
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69 /** Handles underflow of write area |
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70 * |
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71 * @param aMaxLength |
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72 * @return Error code |
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73 */ |
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74 virtual TInt UnderflowL(TInt aMaxLength); |
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75 |
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76 |
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77 /** Handles releasing of stream/buffer |
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78 * |
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79 * @param None |
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80 * @return None |
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81 */ |
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82 virtual void DoRelease(); |
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83 |
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84 |
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85 /** |
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86 * Bytes written to stream |
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87 */ |
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88 TInt iBytesWritten; |
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89 |
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90 |
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91 /** |
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92 * Chunks sent to server |
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93 */ |
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94 TInt iSentChunks; |
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95 |
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96 |
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97 /** |
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98 * Reference to parent stream |
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99 */ |
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100 RFotaWriteStream* iMyWriteStream; |
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101 |
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102 }; |
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103 |
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104 |
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105 /** |
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106 * RFotaWriteStream saves swupd to memory chunk |
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107 * |
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108 * Saves written content via TDP2StreamBuf to |
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109 * the chunk. |
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110 * |
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111 * @lib fotaengine.lib |
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112 * @since S60 3.1 |
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113 */ |
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114 class RFotaWriteStream : public RWriteStream |
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115 { |
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116 friend class RFotaEngineSession; |
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117 |
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118 friend class TDP2StreamBuf; |
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119 |
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120 public: |
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121 |
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122 RFotaWriteStream (); |
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123 |
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124 /** Opens stream |
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125 * |
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126 * @param aPkgId package id |
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127 * @return Error code |
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128 */ |
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129 TInt OpenL (const TInt aPkgId); |
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130 |
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131 private: |
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132 |
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133 /** |
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134 * Memory buffer |
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135 */ |
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136 TDP2StreamBuf iBuf; |
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137 |
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138 /** |
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139 * Reference to parent session |
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140 */ |
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141 RFotaEngineSession* iFotaEngineSession; |
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142 |
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143 /** |
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144 * Max package size. If exceeded, must throw error in this class. |
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145 */ |
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146 TInt iWriteLimit; |
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147 }; |
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148 |
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149 |
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150 #endif // __FOTAENGSTREAM_H__ |
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