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1 // Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies). |
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2 // All rights reserved. |
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3 // This component and the accompanying materials are made available |
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4 // under the terms of "Eclipse Public License v1.0" |
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5 // which accompanies this distribution, and is available |
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6 // at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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7 // |
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8 // Initial Contributors: |
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9 // Nokia Corporation - initial contribution. |
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10 // |
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11 // Contributors: |
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12 // |
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13 // Description: |
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14 // |
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15 |
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16 /** |
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17 @file |
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18 @InternalTechnology |
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19 */ |
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20 |
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21 #include "cmtptypecomplexbuffer.h" |
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22 #include <mtp/mtpdatatypeconstants.h> |
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23 |
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24 // File type constants. |
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25 const TInt KMTPBufferChunkSize(0x00019000); // 100KB |
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26 |
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27 /** |
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28 MTP string data type factory method. This method is used to create a |
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29 zero-length MTP string. |
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30 @return A pointer to a zero-length MTP string data type. Ownership IS |
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31 transfered. |
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32 @leave One of the system wide error codes, if unsuccessful. |
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33 */ |
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34 EXPORT_C CMTPTypeComplexBuffer* CMTPTypeComplexBuffer::NewL() |
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35 { |
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36 CMTPTypeComplexBuffer* self = NewLC(); |
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37 CleanupStack::Pop(self); |
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38 return self; |
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39 } |
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40 |
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41 /** |
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42 MTP string data type factory method. This method is used to create an |
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43 MTP string with the specified value. |
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44 @param aString The initial string value. |
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45 @return A pointer to the MTP string data type. Ownership IS transfered. |
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46 @leave One of the system wide error codes, if unsuccessful. |
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47 */ |
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48 EXPORT_C CMTPTypeComplexBuffer* CMTPTypeComplexBuffer::NewL(const TDesC8& aData) |
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49 { |
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50 CMTPTypeComplexBuffer* self = NewLC(aData); |
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51 CleanupStack::Pop(self); |
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52 return self; |
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53 } |
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54 |
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55 /** |
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56 MTP file object data type factory method. |
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57 @param aFs The handle of an active file server session. |
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58 @param aName The name of the file. Any path components (i.e. drive letter |
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59 or directory), which are not specified, are taken from the session path. |
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60 @param aMode The mode in which the file is opened (@see TFileMode). |
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61 @return A pointer to the MTP file object data type. Ownership IS transfered. |
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62 @leave One of the system wide error codes, if a processing failure occurs. |
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63 @see TFileMode |
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64 */ |
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65 EXPORT_C CMTPTypeComplexBuffer* CMTPTypeComplexBuffer::NewLC() |
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66 { |
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67 CMTPTypeComplexBuffer* self = NewLC(KNullDesC8); |
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68 return self; |
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69 } |
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70 |
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71 /** |
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72 MTP file object data type factory method. A pointer to the MTP file object data |
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73 type is placed on the cleanup stack. |
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74 @param aFs The handle of an active file server session. |
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75 @param aName The name of the file. Any path components (i.e. drive letter |
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76 or directory), which are not specified, are taken from the session path. |
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77 @param aMode The mode in which the file is opened (@see TFileMode). |
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78 @return A pointer to the MTP file object data type. Ownership IS transfered. |
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79 @leave One of the system wide error codes, if a processing failure occurs. |
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80 @see TFileMode |
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81 */ |
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82 EXPORT_C CMTPTypeComplexBuffer* CMTPTypeComplexBuffer::NewLC(const TDesC8& aData) |
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83 { |
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84 CMTPTypeComplexBuffer* self = new(ELeave) CMTPTypeComplexBuffer; |
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85 CleanupStack::PushL(self); |
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86 self->ConstructL(aData); |
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87 return self; |
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88 } |
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89 |
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90 /** |
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91 Destructor |
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92 */ |
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93 EXPORT_C CMTPTypeComplexBuffer::~CMTPTypeComplexBuffer() |
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94 { |
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95 iBuffer.Close(); |
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96 } |
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97 |
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98 /** |
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99 Provides a reference to the native file object encapsulate by the MTP file |
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100 object data type. |
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101 @return The native file object reference. |
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102 */ |
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103 EXPORT_C const TDesC8& CMTPTypeComplexBuffer::Buffer() |
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104 { |
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105 return iBuffer; |
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106 } |
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107 |
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108 EXPORT_C void CMTPTypeComplexBuffer::SetBuffer(const TDesC8& aData ) |
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109 { |
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110 iBuffer.Zero(); |
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111 if(aData == KNullDesC8) |
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112 { |
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113 return; |
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114 } |
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115 |
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116 iBuffer.Copy(aData); |
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117 } |
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118 |
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119 EXPORT_C TInt CMTPTypeComplexBuffer::FirstReadChunk(TPtrC8& aChunk) const |
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120 { |
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121 aChunk.Set(iBuffer.Ptr(), iBuffer.Length()); |
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122 return KMTPChunkSequenceCompletion; |
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123 } |
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124 |
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125 EXPORT_C TInt CMTPTypeComplexBuffer::NextReadChunk(TPtrC8& aChunk) const |
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126 { |
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127 aChunk.Set(NULL, 0); |
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128 return KErrNotReady; |
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129 } |
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130 |
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131 EXPORT_C TInt CMTPTypeComplexBuffer::FirstWriteChunk(TPtr8& aChunk) |
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132 { |
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133 TInt err(KErrNone); |
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134 aChunk.Set(NULL, 0, 0); |
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135 iWriteSequenceState = EIdle; |
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136 aChunk.Set(&iBuffer[0], 0, iBuffer.MaxLength()); |
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137 iWriteSequenceState = EInProgress; |
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138 return err; |
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139 } |
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140 |
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141 EXPORT_C TInt CMTPTypeComplexBuffer::NextWriteChunk(TPtr8& aChunk) |
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142 { |
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143 TInt err(KErrNone); |
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144 aChunk.Set(NULL, 0, 0); |
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145 |
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146 if (iWriteSequenceState != EInProgress) |
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147 { |
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148 err = KErrNotReady; |
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149 } |
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150 else |
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151 { |
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152 aChunk.Set(&iBuffer[0], 0, iBuffer.MaxLength()); |
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153 } |
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154 |
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155 return err; |
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156 } |
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157 |
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158 EXPORT_C TUint64 CMTPTypeComplexBuffer::Size() const |
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159 { |
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160 return iBuffer.Size(); |
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161 } |
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162 |
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163 EXPORT_C TUint CMTPTypeComplexBuffer::Type() const |
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164 { |
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165 return EMTPTypeString; |
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166 } |
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167 |
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168 EXPORT_C TBool CMTPTypeComplexBuffer::CommitRequired() const |
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169 { |
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170 return ETrue; |
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171 } |
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172 |
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173 EXPORT_C MMTPType* CMTPTypeComplexBuffer::CommitChunkL(TPtr8& aChunk) |
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174 { |
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175 iBuffer.Zero(); |
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176 iBuffer.Copy(aChunk); |
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177 return NULL; |
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178 } |
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179 |
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180 CMTPTypeComplexBuffer::CMTPTypeComplexBuffer() |
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181 { |
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182 |
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183 } |
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184 |
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185 void CMTPTypeComplexBuffer::ConstructL(const TDesC8& aData) |
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186 { |
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187 iBuffer.CreateMaxL(KMTPBufferChunkSize); |
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188 if(aData != KNullDesC8) |
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189 { |
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190 iBuffer.Zero(); |
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191 iBuffer.Copy(aData); |
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192 } |
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193 } |
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194 |