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1 // Copyright (c) 2005-2009 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 #include "MmfDevSoundCIDeMuxUtility.h" |
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17 #include "MmfDevSoundCIMuxUtility.h" // included for command definitions |
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18 #include <mmf/plugin/mmfdevsoundcustominterface.hrh> |
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19 #include <ecom/ecom.h> |
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20 #include <mm/mmpluginutils.h> |
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21 |
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22 |
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23 CMMFDevSoundCIDeMuxUtility* CMMFDevSoundCIDeMuxUtility::NewL(MMMFDevSoundCustomInterfaceDeMuxInterface* aInterface) |
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24 { |
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25 CMMFDevSoundCIDeMuxUtility* self = new (ELeave) CMMFDevSoundCIDeMuxUtility(aInterface); |
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26 CleanupStack::PushL(self); |
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27 self->ConstructL(); |
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28 CleanupStack::Pop(self); |
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29 return self; |
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30 } |
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31 |
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32 void CMMFDevSoundCIDeMuxUtility::ConstructL() |
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33 { |
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34 // nothing to do in this plugin |
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35 } |
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36 |
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37 CMMFDevSoundCIDeMuxUtility::~CMMFDevSoundCIDeMuxUtility() |
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38 { |
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39 |
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40 } |
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41 |
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42 const TInt KDeMuxTempBufferSize = 20; |
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43 |
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44 // create a custom interface Mux implementation |
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45 MMMFDevSoundCustomInterfaceDeMuxPlugin* CMMFDevSoundCIDeMuxUtility::CreateCustomInterfaceDeMuxL(TUid aInterfaceId) |
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46 { |
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47 // The Uid of the plugin will be the match string |
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48 TInt uidAsInteger = aInterfaceId.iUid; |
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49 |
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50 TBuf8<KDeMuxTempBufferSize> tempBuffer; |
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51 tempBuffer.Num(uidAsInteger, EHex); // has value |
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52 TUid interfaceUid = {KUidDevSoundCustomInterfaceDeMux}; |
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53 |
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54 TUid destructorKey; |
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55 MMMFDevSoundCustomInterfaceDeMuxPlugin* self = |
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56 static_cast<MMMFDevSoundCustomInterfaceDeMuxPlugin*> |
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57 (MmPluginUtils::CreateImplementationL(interfaceUid, destructorKey, tempBuffer, KRomOnlyResolverUid)); |
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58 |
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59 // pass the destructor key so class can destroy itself |
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60 self->PassDestructorKey(destructorKey); |
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61 CleanupReleasePushL(*self); |
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62 |
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63 // attempt to construct the plugin |
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64 self->CompleteConstructL(this); |
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65 CleanupStack::Pop(); // self |
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66 |
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67 return self; |
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68 } |
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69 |
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70 |
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71 // this will leave if the command is not a supported custom interface command |
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72 // the integer being returned is not an error code per-se it is the return code |
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73 // from the message being handled and so it makes sense here to have the function |
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74 // returning an integer but also able to leave if there is a problem |
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75 TInt CMMFDevSoundCIDeMuxUtility::ProcessCustomInterfaceCommandL(const RMmfIpcMessage& aMessage) |
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76 { |
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77 TPckgBuf<TA3FCustomInterfaceCommand> commandBuf; |
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78 MmfMessageUtil::ReadL(aMessage, 1, commandBuf); |
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79 CMMFDevSoundCIMuxUtility::TMMFDevSoundCustomCommand commandType = commandBuf().iType; |
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80 TInt handle = commandBuf().iHandle; |
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81 TInt retVal = KErrNotFound; |
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82 |
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83 switch (commandType) |
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84 { |
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85 case CMMFDevSoundCIMuxUtility::EMMFDevSoundCustomCommandCIOpenSlave: |
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86 { |
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87 // get a local copy of descriptor |
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88 RBuf8 tempBuf; |
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89 tempBuf.CleanupClosePushL(); |
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90 TInt len = InputDesLength(aMessage); |
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91 if (len < 0) |
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92 { |
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93 User::Leave(KErrBadDescriptor); |
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94 } |
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95 else |
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96 { |
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97 tempBuf.CreateL(len); |
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98 } |
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99 ReadFromInputDesL(aMessage, &tempBuf); |
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100 |
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101 TUid interfaceUid(KNullUid); |
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102 interfaceUid.iUid = handle; |
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103 TPckgBuf<TUid> idBuffer(interfaceUid); |
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104 |
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105 retVal = iInterface->DoOpenSlaveL(idBuffer(), tempBuf); |
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106 CleanupStack::PopAndDestroy(&tempBuf); |
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107 break; |
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108 } |
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109 case CMMFDevSoundCIMuxUtility::EMMFDevSoundCustomCommandCICloseSlave: |
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110 { |
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111 TPckgBuf<TInt> handleBuffer(handle); |
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112 iInterface->DoCloseSlaveL(handleBuffer()); |
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113 retVal = KErrNone; // no return from CloseSlave |
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114 break; |
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115 } |
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116 case CMMFDevSoundCIMuxUtility::EMMFDevSoundCustomCommandCISendSlaveSyncCommand: |
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117 { |
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118 retVal = iInterface->DoSendSlaveSyncCommandL(aMessage); |
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119 break; |
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120 } |
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121 case CMMFDevSoundCIMuxUtility::EMMFDevSoundCustomCommandCISendSlaveSyncCommandResult: |
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122 { |
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123 retVal = iInterface->DoSendSlaveSyncCommandResultL(aMessage); |
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124 break; |
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125 } |
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126 case CMMFDevSoundCIMuxUtility::EMMFDevSoundCustomCommandCISendSlaveAsyncCommand: |
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127 { |
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128 iInterface->DoSendSlaveAsyncCommandL(aMessage); |
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129 retVal = KErrNone; // no return from async |
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130 break; |
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131 } |
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132 case CMMFDevSoundCIMuxUtility::EMMFDevSoundCustomCommandCISendSlaveAsyncCommandResult: |
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133 { |
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134 iInterface->DoSendSlaveAsyncCommandResultL(aMessage); |
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135 retVal = KErrNone; // no return from async |
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136 break; |
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137 } |
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138 default: |
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139 User::Leave(retVal); |
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140 } |
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141 |
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142 return retVal; |
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143 } |
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144 |
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145 |
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146 // at the moment these two functions are the same but this may change on different platforms |
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147 // so separate sync and async message data functions have been defined |
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148 void CMMFDevSoundCIDeMuxUtility::GetSyncMessageDataL(const RMmfIpcMessage& aMessage, TMMFDevSoundCIMessageData& aData) |
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149 { |
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150 // data is stored as destination, custom command info, inbuf, outbuf |
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151 TPckgBuf<TA3FCustomInterfaceCommand> comBuffer; |
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152 aMessage.ReadL(1, comBuffer); |
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153 |
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154 // get command and handle |
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155 aData.iCommand = comBuffer().iCommand; |
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156 aData.iHandle = comBuffer().iHandle; |
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157 } |
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158 |
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159 void CMMFDevSoundCIDeMuxUtility::GetAsyncMessageDataL(const RMmfIpcMessage& aMessage, TMMFDevSoundCIMessageData& aData) |
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160 { |
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161 // data is stored as destination, custom command info, inbuf, outbuf,status |
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162 TPckgBuf<TA3FCustomInterfaceCommand> comBuffer; |
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163 aMessage.ReadL(1, comBuffer); |
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164 |
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165 // get command and handle |
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166 aData.iCommand = comBuffer().iCommand; |
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167 aData.iHandle = comBuffer().iHandle; |
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168 } |
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169 |
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170 |
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171 TInt CMMFDevSoundCIDeMuxUtility::InputDesLength(const RMmfIpcMessage& aMessage) |
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172 { |
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173 // input descriptor is at offset 2 |
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174 TInt len = aMessage.GetDesLength(2); |
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175 return len; |
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176 } |
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177 |
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178 void CMMFDevSoundCIDeMuxUtility::ReadFromInputDesL(const RMmfIpcMessage& aMessage, TDes8* aBufToFill) |
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179 { |
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180 // check if the descriptor is large enough |
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181 TInt len = InputDesLength(aMessage); |
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182 if (len > aBufToFill->MaxLength()) |
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183 { |
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184 User::Leave(KErrArgument); |
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185 } |
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186 |
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187 // input descriptor is at offset 2 |
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188 aMessage.ReadL(2, *aBufToFill); |
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189 } |
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190 |
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191 void CMMFDevSoundCIDeMuxUtility::WriteToOutputDesL(const RMmfIpcMessage& aMessage, TDesC8& aBufToWrite) |
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192 { |
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193 // output descriptor is at offset 3 |
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194 aMessage.WriteL(3, aBufToWrite); |
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195 } |
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196 |
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197 |
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198 void CMMFDevSoundCIDeMuxUtility::CompleteMessage(const RMmfIpcMessage& aMessage, TInt aError) |
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199 { |
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200 aMessage.Complete(aError); |
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201 } |
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202 |
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203 CMMFDevSoundCIDeMuxUtility::CMMFDevSoundCIDeMuxUtility(MMMFDevSoundCustomInterfaceDeMuxInterface* aInterface) |
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204 : iInterface(aInterface) |
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205 { |
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206 } |
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207 |