author | hgs |
Mon, 26 Jul 2010 23:10:35 +0300 | |
changeset 37 | 61b7cc389c7e |
parent 0 | 1bce908db942 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2006 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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* |
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*/ |
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// ============================ INCLUDES ======================================= |
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#include "mcch263oldpayloadencoder.h" |
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#include "mcch263formatlogs.h" |
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// ============================ MEMBER FUNCTIONS =============================== |
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// ----------------------------------------------------------------------------- |
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// CIPMediaVideoSink::NewL() |
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// First stage constructor |
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// (other items were commented in a header). |
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// ----------------------------------------------------------------------------- |
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// |
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CMccH263OldPayloadEncoder* CMccH263OldPayloadEncoder::NewL() |
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{ |
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return new ( ELeave ) CMccH263OldPayloadEncoder(); |
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} |
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CMccH263OldPayloadEncoder::~CMccH263OldPayloadEncoder() |
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{ |
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} |
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// ----------------------------------------------------------------------------- |
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// CIPMediaVideoSink::WriteBufferL() |
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// Write media buffer |
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// (other items were commented in a header). |
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// ----------------------------------------------------------------------------- |
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// |
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void CMccH263OldPayloadEncoder::EncodeL( |
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CMMFBuffer* aMMFBuffer, |
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RPointerArray<CBufferContainer>& aDesBuffers ) |
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{ |
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__H263FORMAT_MEDIA("CMccH263OldPayloadEncoder::EncodeL, enter") |
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CMMFDataBuffer* buf = static_cast<CMMFDataBuffer*>( aMMFBuffer ); |
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iSendHeader.iMarker = 0; |
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// Get timestamp to RTP header. conversion to 90kHz clock |
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TInt64 tmpStamp = ( buf->TimeToPlay().Int64() + iTimeStamp.Int64() ) / KConst100 * KConst9 ; |
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iSendHeader.iTimestamp = TRtpTimeStamp( tmpStamp ) ; |
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__H263FORMAT_MEDIA_INT2( "CMccH263OldPayloadEncoder::EncodeL, TimeStamp:", |
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iSendHeader.iTimestamp, "Length:", buf->BufferSize() ) |
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// Reset marker from last frame |
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iSendHeader.iMarker = 0; |
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// Get pointer to raw data |
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TPtrC8 frame = buf->Data(); |
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// Check that descriptor length is included. |
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// Missing length causes panic in frame.Mid() function |
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if ( frame.Length() == 0 || buf->BufferSize() != frame.Length() ) |
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{ |
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__H263FORMAT_MEDIA("CMccH263OldPayloadEncoder::EncodeL, ERROR Buffer corrupted") |
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User::Leave( KErrBadDescriptor ); |
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} |
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const TUint8 *dataPtr = buf->Data().Ptr(); |
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// Get buffer length |
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TUint frameLength = buf->BufferSize(); |
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// Get frame header information |
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GetHeaderInfoL( frame ); |
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|
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// If packet is smaller than max Packet size. Send right away |
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if ( frame.Length() <= TInt( KVideoPacketSize ) ) |
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{ |
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__H263FORMAT_MEDIA("CMccH263OldPayloadEncoder::EncodeL, Sending whole frame...") |
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// Set marker to indicate last packet of current frame |
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CreateNewBufferL( aMMFBuffer, |
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aDesBuffers, |
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frame, |
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frameLength + KConst4, |
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1 ); |
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__H263FORMAT_MEDIA("CMccH263OldPayloadEncoder::EncodeL, exit" ) |
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return; |
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} |
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// Initialize splitting variables |
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TInt lastGOB = 0; |
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TInt lastsend = 0; |
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|
106 |
|
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107 |
// Scan frame for GOBs |
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108 |
for( TUint i= 0; i < frameLength; i++ ) |
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109 |
{ |
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110 |
dataPtr += i; |
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111 |
if ( *dataPtr == TUint8( 0x00 ) ) |
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112 |
{ |
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113 |
dataPtr++; |
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114 |
if ( *dataPtr == TUint8( 0x00 ) ) |
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115 |
{ |
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116 |
dataPtr++; |
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117 |
if ( TUint8( *dataPtr&0xfc )>0x80 ) |
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118 |
{ |
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119 |
if ( ( i - lastsend ) >= KVideoPacketSize && lastGOB ) |
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120 |
{ |
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121 |
__H263FORMAT_MEDIA_INT2("CMccH263OldPayloadEncoder::EncodeL(scan gobs), Sending packet f", |
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122 |
lastsend, "len", ( lastGOB - lastsend ) ) |
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123 |
|
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124 |
// Packet size exceeded send new RTP Packet |
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125 |
TPtrC8 packetData = |
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126 |
frame.Mid( lastsend, ( lastGOB - lastsend ) ); |
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127 |
|
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128 |
CreateNewBufferL( aMMFBuffer, |
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129 |
aDesBuffers, |
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130 |
packetData, |
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131 |
packetData.Length() + KConst4, |
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132 |
iSendHeader.iMarker ); |
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133 |
|
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134 |
lastsend = lastGOB; |
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135 |
} |
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136 |
lastGOB = i; |
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137 |
} |
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138 |
} |
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139 |
} |
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140 |
// Return pointer to begining of frame |
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141 |
dataPtr = frame.Ptr(); |
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142 |
} |
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143 |
|
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144 |
// Check that last packet does not exceed packet size |
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145 |
if ( ( frameLength - lastsend ) >= KVideoPacketSize && lastsend != 0 ) |
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146 |
{ |
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147 |
__H263FORMAT_MEDIA_INT2("CMccH263OldPayloadEncoder::EncodeL(last packet check), Sending packet f", |
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148 |
lastsend, "len", ( lastGOB - lastsend ) ) |
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149 |
|
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150 |
TPtrC8 packetData = |
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151 |
frame.Mid( lastsend, ( lastGOB - lastsend ) ); |
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|
152 |
|
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153 |
CreateNewBufferL( aMMFBuffer, |
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154 |
aDesBuffers, |
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155 |
packetData, |
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156 |
packetData.Length() + KConst4, |
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|
157 |
iSendHeader.iMarker ); |
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|
158 |
|
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159 |
lastsend = lastGOB; |
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160 |
} |
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|
161 |
|
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162 |
// Send last packet to RTP API |
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163 |
if ( lastsend != 0 ) |
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|
164 |
{ |
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|
165 |
__H263FORMAT_MEDIA_INT2("CMccH263OldPayloadEncoder::EncodeL(last packet), Sending packet f", |
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|
166 |
lastsend, "len", ( frameLength - lastsend ) ) |
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|
167 |
|
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|
168 |
TPtrC8 packetData = |
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|
169 |
frame.Mid( lastsend, ( frameLength - lastsend ) ); |
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|
170 |
|
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|
171 |
// Set marker to indicate last packet of current frame |
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|
172 |
CreateNewBufferL( aMMFBuffer, |
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|
173 |
aDesBuffers, |
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|
174 |
packetData, |
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|
175 |
packetData.Length() + KConst4, |
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|
176 |
1 ); |
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|
177 |
|
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|
178 |
} |
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|
179 |
|
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|
180 |
// Special case no GOBs found try to send whole frame |
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181 |
else |
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|
182 |
{ |
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|
183 |
__H263FORMAT_MEDIA_INT1("CMccH263OldPayloadEncoder::EncodeL(no gobs), Sending whole packet len", |
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|
184 |
frameLength ) |
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|
185 |
|
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|
186 |
if ( buf->BufferSize() > TInt( KVideoPacketSize + KConst4 ) ) |
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|
187 |
{ |
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|
188 |
__H263FORMAT_MEDIA("CMccH263OldPayloadEncoder::EncodeL, ERROR, too big frame, exit") |
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|
189 |
|
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190 |
return; |
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|
191 |
} |
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|
192 |
|
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|
193 |
// Set marker to indicate last packet of current frame |
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|
194 |
CreateNewBufferL( aMMFBuffer, |
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|
195 |
aDesBuffers, |
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|
196 |
frame, |
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|
197 |
frameLength + KConst4, |
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|
198 |
1 ); |
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|
199 |
|
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|
200 |
} |
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|
201 |
|
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|
202 |
__H263FORMAT_MEDIA("CMccH263OldPayloadEncoder::EncodeL, exit") |
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|
203 |
|
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|
204 |
} |
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|
205 |
|
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|
206 |
// ----------------------------------------------------------------------------- |
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|
207 |
// CMccH263OldPayloadEncoder::WriteHeaderData() |
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|
208 |
// Write payload header information byte |
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209 |
// (other items were commented in a header). |
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210 |
// ----------------------------------------------------------------------------- |
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211 |
// |
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212 |
TUint8 CMccH263OldPayloadEncoder::WriteHeaderData( TInt aByte ) |
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213 |
{ |
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214 |
__H263FORMAT_MEDIA("CMccH263OldPayloadEncoder::WriteHeaderData") |
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215 |
|
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216 |
//byte to be written |
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217 |
TUint8 wbyte = 0; |
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218 |
//construct needed byte |
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219 |
switch ( aByte ) |
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220 |
{ |
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221 |
case 0: |
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222 |
{ |
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223 |
wbyte |= TUint8( headerA.F << KConst7 ); |
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224 |
wbyte |= TUint8( headerA.P << KConst6 ); |
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225 |
wbyte |= TUint8( headerA.SBIT << KConst3 ); |
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226 |
wbyte |= TUint8( headerA.EBIT ); |
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227 |
}break; |
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228 |
case 1: |
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229 |
{ |
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230 |
wbyte |= TUint8( headerA.SRC << KConst5 ); |
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231 |
wbyte |= TUint8( headerA.I << KConst4 ); |
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232 |
wbyte |= TUint8( headerA.U << KConst3 ); |
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233 |
wbyte |= TUint8( headerA.S << KConst2 ); |
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234 |
wbyte |= TUint8( headerA.A << 1 ); |
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235 |
}break; |
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236 |
case KConst2: |
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237 |
{ |
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238 |
wbyte |= TUint8( headerA.DBQ << KConst3 ); |
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239 |
wbyte |= TUint8( headerA.TRB ); |
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240 |
}break; |
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241 |
case KConst3: |
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242 |
{ |
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243 |
wbyte = headerA.TR; |
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244 |
}break; |
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245 |
default: |
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246 |
{ |
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247 |
}break; |
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248 |
} |
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249 |
//return constructed byte |
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250 |
return wbyte; |
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251 |
} |
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252 |
|
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253 |
// ----------------------------------------------------------------------------- |
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254 |
// CMccH263OldPayloadEncoder::GetHeaderInfoL() |
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255 |
// Get video frame header information |
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256 |
// (other items were commented in a header). |
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257 |
// ----------------------------------------------------------------------------- |
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258 |
// |
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259 |
void CMccH263OldPayloadEncoder::GetHeaderInfoL( TDesC8& aFrame ) |
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260 |
{ |
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261 |
__H263FORMAT_MEDIA("CMccH263OldPayloadEncoder::GetHeaderInfoL") |
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262 |
|
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263 |
//fill in default values = 0 |
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264 |
headerA.F = 0; |
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265 |
headerA.P = 0; |
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266 |
headerA.SBIT = 0; |
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267 |
headerA.EBIT = 0; |
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268 |
headerA.SRC = 0; |
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269 |
headerA.I = 0; |
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270 |
headerA.U = 0; |
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271 |
headerA.S = 0; |
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272 |
headerA.A = 0; |
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273 |
headerA.R = 0; |
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|
274 |
headerA.DBQ = 0; |
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275 |
headerA.TRB = 0; |
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276 |
headerA.TR = 0; |
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|
277 |
|
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|
278 |
//A S S U M I N G that aFrame begins with PSC |
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279 |
const TUint8 *help; |
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280 |
help = aFrame.Ptr(); |
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|
281 |
//goto PTYPE-field |
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282 |
help += KConst4; |
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283 |
TUint8 test = 0; |
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284 |
//get SRC |
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285 |
test = TUint8( *help & 0x1c ); |
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|
286 |
test >>= KConst2; |
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|
287 |
headerA.SRC = test; |
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288 |
if( headerA.SRC == KConst7 ) |
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|
289 |
{ |
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|
290 |
#ifdef LOG |
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|
291 |
IPUL_LOGC( 1, "VSink::GetHeaderInfoL> ERROR: Picture format unsupported" ); |
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|
292 |
#endif |
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293 |
} |
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|
294 |
//get I parameter |
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|
295 |
test = 0; |
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|
296 |
test = TUint8( *help & 0x02 ); |
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|
297 |
test >>= 1; |
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|
298 |
headerA.I = test; |
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|
299 |
//get U parameter |
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|
300 |
test = 0; |
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|
301 |
test = TUint8( *help & 0x01 ); |
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|
302 |
headerA.U = test; |
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|
303 |
//get S parameter |
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|
304 |
help++; |
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Revision: 201003
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|
305 |
test = 0; |
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|
306 |
test = TUint8( *help & 0x80 ); |
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|
307 |
test >>= KConst7; |
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|
308 |
headerA.S = test; |
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|
309 |
//get A parameter |
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|
310 |
test = 0; |
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|
311 |
test = TUint8( *help & 0x40 ); |
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|
312 |
test >>= KConst6; |
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|
313 |
headerA.A = test; |
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|
314 |
//get P parameter |
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|
315 |
test = 0; |
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|
316 |
test = TUint8( *help & 0x20 ); |
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|
317 |
test >>= KConst5; |
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headerA.P = test; |
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//check for correct file format |
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if ( headerA.P != 0 ) |
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{ |
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#ifdef LOG |
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IPUL_LOGC( 1 , "VSink::GetHeaderInfoL> ERROR: Unsupported file format" ); |
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#endif |
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} |
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} |
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|
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// ----------------------------------------------------------------------------- |
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// CMccH263OldPayloadEncoder::SetPayloadType() |
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// ----------------------------------------------------------------------------- |
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// |
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void CMccH263OldPayloadEncoder::SetPayloadType( TUint8 aPayloadType ) |
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{ |
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__H263FORMAT_MEDIA("CMccH263OldPayloadEncoder::SetPayloadType") |
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|
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iSendHeader.iPayloadType = aPayloadType; |
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} |
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|
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// ----------------------------------------------------------------------------- |
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// CMccH263OldPayloadEncoder::CreateNewBufferL() |
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// ----------------------------------------------------------------------------- |
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// |
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void CMccH263OldPayloadEncoder::CreateNewBufferL( |
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CMMFBuffer* aMMFBuffer, |
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RPointerArray<CBufferContainer>& aDesBuffers, |
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const TDesC8& aPacketData, |
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TInt aLength, |
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TInt aMarker ) |
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{ |
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CMMFDataBuffer* newBuffer = |
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CMMFDataBuffer::NewL( aLength ); |
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CleanupStack::PushL( newBuffer ); |
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newBuffer->Data().Append( WriteHeaderData( 0 ) ); |
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newBuffer->Data().Append( WriteHeaderData( 1 ) ); |
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newBuffer->Data().Append( WriteHeaderData( KConst2 ) ); |
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newBuffer->Data().Append( WriteHeaderData( KConst3 ) ); |
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newBuffer->Data().Append( aPacketData ); |
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newBuffer->SetTimeToPlay( aMMFBuffer->TimeToPlay() ); |
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newBuffer->SetFrameNumber( aMMFBuffer->FrameNumber() + iSequenceNumIncrementer ); |
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|
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// If frame is divided in several packets, sequence numbers of following |
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// packets have to be modified |
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if ( aMarker == 0 ) |
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{ |
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iSequenceNumIncrementer++; |
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} |
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|
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CBufferContainer* cont = new (ELeave) CBufferContainer(); |
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CleanupStack::Pop( newBuffer ); |
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cont->iBuffer = newBuffer; |
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iSendHeader.iMarker = aMarker; |
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cont->iSendHeader = iSendHeader; |
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CleanupStack::PushL( cont ); |
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aDesBuffers.AppendL( cont ); |
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CleanupStack::Pop( cont ); |
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} |
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377 |