author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Tue, 26 Jan 2010 15:23:49 +0200 | |
changeset 0 | af10295192d8 |
permissions | -rw-r--r-- |
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af10295192d8
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
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// Copyright (c) 2003-2009 Nokia Corporation and/or its subsidiary(-ies). |
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// All rights reserved. |
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// This component and the accompanying materials are made available |
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// under the terms of "Eclipse Public License v1.0" |
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// which accompanies this distribution, and is available |
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// at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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// |
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// Initial Contributors: |
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// Nokia Corporation - initial contribution. |
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// |
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// Contributors: |
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// |
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// Description: |
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// This test step feeds precompressed IP/TCP packets into both |
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// the VJDeCompressor (unit under test) and the Referece Decompressor |
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// (provided in RFC 1144). |
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// The output of the VJDeCompressor is compared against the output of |
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// the Reference Decompressor to verify its corectness |
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// |
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// |
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|
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/** |
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@file VJDecompressTypeErrorTest.cpp |
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*/ |
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#include "VJTest.h" |
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|
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// Reference decompressor needs this much space before the compressed |
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// packet so it can store the TCP/IP header |
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static const TUint KRefPacketHeaderSpace = 128; |
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|
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void CVJDecompressTypeErrorTest::ProcessPacketL() |
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/** |
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This is a virtual function. |
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This function feeds precompressed IP/TCP packets into both |
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the VJDeCompressor (unit under test) and the Referece Decompressor |
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(provided in RFC 1144). |
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The output of the VJDeCompressor is compared against the output of |
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the Reference Decompressor to verify its corectness |
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*/ |
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|
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{ |
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TUint packetType = TrimPacketBeforeDecompression(); |
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|
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if (packetType == 911) |
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{ |
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// Packet type is unsupported. Abort test. |
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SetTestStepResult(EFail); |
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return; |
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} |
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|
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// Create packet buffer to be sent to reference decompressor |
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// This is to prevent compromising the test results if the compressor/decompressor alters the original data |
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HBufC8* refPacketBuffer = HBufC8::NewMaxLC(TPcapRecord::KMaxPacketSize+KRefPacketHeaderSpace); |
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// Reserve some space at the head of the HBufC8 for the uncompressed header |
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// The reference decompressor expects the packet has enough space to prepend 120 byes of resconstructed header |
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TPtr8 refInputPtr(const_cast<TUint8*>(refPacketBuffer->Ptr())+KRefPacketHeaderSpace, refPacketBuffer->Length()-KRefPacketHeaderSpace); |
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refInputPtr = iRec->Data(); |
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|
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TUint8 *refdecompOutput = NULL; |
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TInt refPacketLen = refInputPtr.Length(); |
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|
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// Create packet buffer to be sent to VJDecompressor |
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// This is to prevent compromising the test results if the compressor/decompressor alters the original data |
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// The size of the HBuf object must have a maximum length that is big enough to hold the decompressed data |
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HBufC8* vjPacketBuffer = HBufC8::NewLC(TPcapRecord::KMaxPacketSize); |
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TPtr8 vjOutputPtr (vjPacketBuffer->Des()); |
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vjOutputPtr = iRec->Data(); |
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iPacket.CopyIn(*vjPacketBuffer, 0); |
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iPacket.TrimEnd(vjPacketBuffer->Length()); |
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|
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// Create info packet |
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RMBufPacket pkt; |
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RMBufPktInfo* info = 0; |
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info = pkt.NewInfoL(); |
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info->iLength = vjPacketBuffer->Length(); |
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pkt.Pack(); |
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iPacket.Prepend(pkt); |
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// Put info packet in front of this packet |
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TUint vjdecompRet; |
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|
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//-------------- substep 7 -------------------- |
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// decompress the packet using VJDeCompressor and Reference decompressor |
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INFO_PRINTF1(_L(" 07, 08 Decompress the packet using VJDeCompressor and Reference Decompressor:")); |
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switch (packetType) |
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{ |
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case KPppIdIp: |
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// the packet is TYPE_IP |
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// decompress TYPE_IP packet using our reference decompressor |
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INFO_PRINTF1(_L(" 07 Decompress TYPE_IP packet using reference decompressor:")); |
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refdecompOutput = sl_uncompress_tcp(const_cast<TUint8*>(refInputPtr.Ptr()), &refPacketLen, (TUint)TYPE_IP, iComp); |
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|
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// VJ Decompressor function is not called because the packet is TYPE_IP |
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INFO_PRINTF1(_L(" 08 TYPE_IP packet is not modified by VJDecompressor.")); |
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vjdecompRet = ETrue; |
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break; |
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case KPppIdVjCompTcp: |
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// the packet is COMPRESSED_TCP |
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// decompress using our reference decompressor |
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104 |
INFO_PRINTF1(_L(" 07 Decompress COMPRESSED_TCP packet using reference decompressor:")); |
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105 |
refdecompOutput = sl_uncompress_tcp(const_cast<TUint8*>(refInputPtr.Ptr()), &refPacketLen, (TUint)TYPE_COMPRESSED_TCP, iComp); |
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|
106 |
|
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107 |
//decompress using our VJ Decompressor |
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108 |
INFO_PRINTF1(_L(" 08 Decompress COMPRESSED_TCP packet using VJDeCompressor:")); |
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109 |
vjdecompRet = iVJDeCompressor->DecompVJComp(iPacket); |
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110 |
INFO_PRINTF2(_L(" 08 COMPRESSED_TCP packet is decompressed: %d"), vjdecompRet); |
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111 |
break; |
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112 |
case KPppIdVjUncompTcp: |
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113 |
// the packet is UNCOMPRESSED_TCP |
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114 |
// decompress using our reference Compressor |
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115 |
INFO_PRINTF1(_L(" 07 Decompress UNCOMPRESSED_TCP packet using reference decompressor:")); |
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refdecompOutput = sl_uncompress_tcp(const_cast<TUint8*>(refInputPtr.Ptr()), &refPacketLen, (TUint)TYPE_UNCOMPRESSED_TCP, iComp); |
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117 |
|
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118 |
//decompress using our VJ Decompressor |
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119 |
INFO_PRINTF1(_L(" 08 Decompress UNCOMPRESSED_TCP packet using VJDeCompressor:")); |
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vjdecompRet = iVJDeCompressor->DecompVJUncomp(iPacket); |
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121 |
INFO_PRINTF2(_L(" 08 UNCOMPRESSED_TCP packet is decompressed: %d"), vjdecompRet); |
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122 |
break; |
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123 |
default: |
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124 |
//the packet is TYPE_ERROR |
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125 |
// set 'toss' flag and discard COMPRESSED_TCP packet until one with C bit set |
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126 |
// or an UNCOMPRESSED_TCP packet arrives |
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// decompress using our reference decompressor |
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INFO_PRINTF1(_L(" 07 Decompress TYPE_ERROR packet using reference decompressor:")); |
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129 |
refdecompOutput = sl_uncompress_tcp(const_cast<TUint8*>(refInputPtr.Ptr()), &refPacketLen, (TUint)TYPE_ERROR, iComp); |
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130 |
//decompress using our VJ Decompressor |
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INFO_PRINTF1(_L(" 08 Handle TYPE_ERROR packet using VJDeCompressor:")); |
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132 |
iVJDeCompressor->CRCError(); |
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vjdecompRet = EFalse; |
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134 |
break; |
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135 |
} |
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136 |
|
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if ((vjdecompRet) && refdecompOutput != 0) |
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138 |
{ |
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139 |
//--------------substep 09---------------------- |
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// Display VJ decompressed packet |
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INFO_PRINTF1(_L(" 09 The VJ decompressed packet:")); |
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142 |
|
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143 |
// The decompressed data should be larger than the compressed data |
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// So we need to expand the size of the pointer in order to hold the decompressed data |
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vjOutputPtr.SetMax(); |
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146 |
|
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147 |
// Remove info packet |
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148 |
iPacket.Remove(); |
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149 |
iPacket.CopyOut(vjOutputPtr); |
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150 |
|
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INFO_PRINTF2(_L("VJ decompressed packet len: %d"), vjPacketBuffer->Length()); |
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// TPtrC8 object is created because DumpIp() takes a TPtrC8 object as a parameter |
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TPtrC8 vjOutputPtrC (vjOutputPtr); |
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DumpIp(vjOutputPtrC); |
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155 |
|
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156 |
//--------------substep 10---------------------- |
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157 |
// Display REF decompressed packet |
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INFO_PRINTF1(_L("10 The REF decompressed packet is:")); |
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TPtrC8 refOutputPtrC(refdecompOutput, refPacketLen); |
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DumpIp(refOutputPtrC); |
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161 |
|
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162 |
//--------------substep 11---------------------- |
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163 |
//Compare the results of the reference compressor output and our VJ compressor output |
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164 |
|
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165 |
INFO_PRINTF1(_L(" 11 Compare the result of the compression by VJCompressor to Reference compressor:")); |
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166 |
INFO_PRINTF2(_L(" Size of VJ comp output: %d"), vjOutputPtrC.Length()); |
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167 |
INFO_PRINTF2(_L(" Size of Reference comp output: %d"), refOutputPtrC.Length()); |
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168 |
|
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169 |
if (!CompareOutput(vjOutputPtrC, refOutputPtrC)) |
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170 |
{ |
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171 |
INFO_PRINTF1(_L("The results are not equal")); |
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172 |
|
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173 |
SetTestStepResult(EFail); |
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174 |
} |
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175 |
} |
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176 |
else |
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177 |
{ |
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178 |
IsItATossPacket(vjdecompRet, refdecompOutput); |
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179 |
} |
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180 |
|
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181 |
|
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182 |
CleanupStack::PopAndDestroy(vjPacketBuffer); |
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183 |
|
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184 |
CleanupStack::PopAndDestroy(refPacketBuffer); |
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185 |
|
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186 |
vjPacketBuffer = NULL; |
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187 |
refPacketBuffer = NULL; |
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188 |
|
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189 |
} // VJDecompressTypeErrorTest |