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1 /* |
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2 * Copyright (c) 2008 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: |
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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 @file |
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21 @internalComponent |
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22 */ |
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23 |
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24 #include "buffercopier.h" |
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25 |
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26 _LIT(KBufferCopierPanic, "CBufferCopier"); |
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27 |
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28 CBufferCopier* CBufferCopier::NewL(MBufferCopierIf& aCallback, TInt aMaxBuffers) |
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29 { |
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30 CBufferCopier* self = new(ELeave) CBufferCopier(aCallback); |
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31 CleanupStack::PushL(self); |
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32 self->ConstructL(aMaxBuffers); |
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33 CleanupStack::Pop(self); |
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34 return self; |
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35 } |
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36 |
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37 CBufferCopier::CBufferCopier(MBufferCopierIf& aCallback): |
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38 CActive(EPriorityNormal), |
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39 iCallback(aCallback) |
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40 { |
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41 CActiveScheduler::Add(this); |
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42 } |
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43 |
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44 void CBufferCopier::ConstructL(TInt aMaxBuffers) |
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45 { |
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46 User::LeaveIfError(iInQueue.CreateLocal(aMaxBuffers)); |
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47 User::LeaveIfError(iOutQueue.CreateLocal(aMaxBuffers)); |
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48 User::LeaveIfError(iRemoveQueue.CreateLocal(aMaxBuffers)); |
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49 SetActive(); |
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50 iInQueue.NotifyDataAvailable(iStatus); |
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51 } |
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52 |
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53 CBufferCopier::~CBufferCopier() |
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54 { |
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55 Cancel(); |
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56 iInQueue.Close(); |
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57 iOutQueue.Close(); |
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58 iRemoveQueue.Close(); |
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59 } |
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60 |
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61 void CBufferCopier::DeliverBuffer(OMX_BUFFERHEADERTYPE* aBuffer, OMX_DIRTYPE aDirection) |
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62 { |
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63 RMsgQueue<OMX_BUFFERHEADERTYPE*>& queue = aDirection == OMX_DirInput ? iInQueue : iOutQueue; |
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64 TInt err = queue.Send(aBuffer); |
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65 // do not expect error as maximum buffer count already allocated |
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66 if(err != KErrNone) |
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67 { |
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68 User::Panic(KBufferCopierPanic, err); |
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69 } |
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70 } |
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71 |
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72 void CBufferCopier::RunL() |
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73 { |
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74 if(iInBuffer == NULL) |
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75 { |
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76 // ignore error, if KErrUnderflow then we go back to waiting on iInQueue |
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77 iInQueue.Receive(iInBuffer); |
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78 } |
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79 else |
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80 { |
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81 OMX_BUFFERHEADERTYPE* outBuffer = NULL; |
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82 TInt err = iOutQueue.Receive(outBuffer); |
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83 // if KErrUnderflow then we go back to waiting on iOutQueue |
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84 if(err == KErrNone) |
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85 { |
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86 CopyBuffer(iInBuffer, outBuffer); |
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87 iInBuffer = NULL; |
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88 } |
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89 } |
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90 |
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91 SetActive(); |
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92 if(iInBuffer == NULL) |
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93 { |
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94 iInQueue.NotifyDataAvailable(iStatus); |
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95 } |
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96 else |
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97 { |
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98 iOutQueue.NotifyDataAvailable(iStatus); |
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99 } |
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100 } |
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101 |
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102 void CBufferCopier::DoCancel() |
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103 { |
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104 iInQueue.CancelDataAvailable(); |
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105 iOutQueue.CancelDataAvailable(); |
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106 } |
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107 |
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108 void CBufferCopier::CopyBuffer(OMX_BUFFERHEADERTYPE* aInBuffer, OMX_BUFFERHEADERTYPE* aOutBuffer) |
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109 { |
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110 aOutBuffer->nOffset = 0; |
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111 TPtr8 desPtr(aOutBuffer->pBuffer, aOutBuffer->nAllocLen); |
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112 desPtr.Copy(aInBuffer->pBuffer + aInBuffer->nOffset, aInBuffer->nFilledLen); |
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113 |
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114 aOutBuffer->nFilledLen = aInBuffer->nFilledLen; |
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115 aOutBuffer->hMarkTargetComponent = aInBuffer->hMarkTargetComponent; |
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116 aOutBuffer->pMarkData = aInBuffer->pMarkData; |
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117 aOutBuffer->nTickCount = aInBuffer->nTickCount; |
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118 aOutBuffer->nTimeStamp = aInBuffer->nTimeStamp; |
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119 aOutBuffer->nFlags = aInBuffer->nFlags; |
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120 |
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121 iCallback.MbcBufferCopied(aInBuffer, aOutBuffer); |
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122 } |
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123 |
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124 TBool CBufferCopier::RemoveBuffer(OMX_BUFFERHEADERTYPE* aBuffer, OMX_DIRTYPE aDirection) |
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125 { |
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126 switch(aDirection) |
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127 { |
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128 case OMX_DirInput: |
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129 { |
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130 if(aBuffer == iInBuffer) |
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131 { |
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132 // also check the slot used for storing the input buffer when waiting for an output buffer |
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133 iInBuffer = NULL; |
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134 return ETrue; |
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135 } |
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136 else |
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137 { |
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138 return RemoveFromQueue(iInQueue, aBuffer); |
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139 } |
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140 } |
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141 case OMX_DirOutput: |
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142 return RemoveFromQueue(iOutQueue, aBuffer); |
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143 default: |
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144 User::Panic(KBufferCopierPanic, KErrArgument); |
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145 return EFalse; // prevent compiler warning |
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146 } |
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147 } |
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148 |
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149 void CBufferCopier::FlushBuffers(OMX_DIRTYPE aDirection) |
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150 { |
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151 OMX_BUFFERHEADERTYPE* buffer; |
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152 if(aDirection == OMX_DirInput) |
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153 { |
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154 if(iInBuffer) |
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155 { |
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156 iCallback.MbcBufferFlushed(iInBuffer, OMX_DirInput); |
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157 iInBuffer = NULL; |
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158 } |
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159 |
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160 while(iInQueue.Receive(buffer) != KErrUnderflow) |
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161 { |
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162 iCallback.MbcBufferFlushed(buffer, OMX_DirInput); |
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163 } |
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164 } |
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165 else if(aDirection == OMX_DirOutput) |
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166 { |
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167 while(iOutQueue.Receive(buffer) != KErrUnderflow) |
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168 { |
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169 iCallback.MbcBufferFlushed(buffer, OMX_DirOutput); |
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170 } |
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171 } |
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172 else |
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173 { |
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174 User::Panic(KBufferCopierPanic, KErrArgument); |
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175 } |
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176 } |
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177 |
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178 TBool CBufferCopier::RemoveFromQueue(RMsgQueue<OMX_BUFFERHEADERTYPE*>& aQueue, OMX_BUFFERHEADERTYPE* aBufferHeader) |
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179 { |
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180 TBool removed = EFalse; |
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181 OMX_BUFFERHEADERTYPE* bufferHeader = NULL; |
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182 while(aQueue.Receive(bufferHeader) != KErrUnderflow) |
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183 { |
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184 if(bufferHeader != aBufferHeader) |
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185 { |
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186 TInt err = iRemoveQueue.Send(bufferHeader); |
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187 __ASSERT_DEBUG(err == KErrNone, User::Panic(KBufferCopierPanic, err)); |
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188 } |
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189 else |
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190 { |
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191 removed = ETrue; |
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192 } |
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193 } |
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194 while(iRemoveQueue.Receive(bufferHeader) != KErrUnderflow) |
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195 { |
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196 TInt err = aQueue.Send(bufferHeader); |
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197 __ASSERT_DEBUG(err == KErrNone, User::Panic(KBufferCopierPanic, err)); |
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198 } |
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199 return removed; |
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200 } |