author | William Roberts <williamr@symbian.org> |
Sun, 14 Mar 2010 13:11:20 +0000 | |
branch | CompilerCompatibility |
changeset 6 | e275ee612b82 |
parent 0 | 1bce908db942 |
permissions | -rw-r--r-- |
0
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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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|
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// ============================ INCLUDES ======================================= |
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#include "mcch263newpayloadencoder.h" |
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#include "mcch263formatlogs.h" |
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// ============================ MEMBER FUNCTIONS =============================== |
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// ----------------------------------------------------------------------------- |
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// CMccH263NewPayloadEncoder::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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CMccH263NewPayloadEncoder* CMccH263NewPayloadEncoder::NewL() |
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{ |
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return new ( ELeave ) CMccH263NewPayloadEncoder(); |
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} |
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CMccH263NewPayloadEncoder::~CMccH263NewPayloadEncoder() |
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{ |
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} |
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// ----------------------------------------------------------------------------- |
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// CMccH263NewPayloadEncoder::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 CMccH263NewPayloadEncoder::EncodeL( |
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CMMFBuffer* aMMFBuffer, |
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RPointerArray<CBufferContainer>& aDesBuffers ) |
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{ |
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__H263FORMAT_MEDIA("CMccH263NewPayloadEncoder::EncodeL, enter") |
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const TInt KMccValZero = 0; |
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const TInt KMccValOne = 1; |
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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 = |
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( buf->TimeToPlay().Int64() + iTimeStamp.Int64() ) / KConst100 * KConst9 ; |
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iSendHeader.iTimestamp = TRtpTimeStamp( tmpStamp ) ; |
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__H263FORMAT_MEDIA_INT2("CMccH263NewPayloadEncoder::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 ("CMccH263NewPayloadEncoder::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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|
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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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TPtrC8 packetData; |
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// Scan frame for GOBs |
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for( TUint i= 0; i < frameLength - KConst2; i++ ) |
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{ |
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dataPtr += i; |
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if ( *dataPtr == TUint8( 0x00 ) ) |
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{ |
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dataPtr++; |
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if ( *dataPtr == TUint8( 0x00 ) ) |
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{ |
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dataPtr++; |
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if ( TUint8( *dataPtr&0xfc ) > 0x80 ) |
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{ |
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if ( ( i - lastsend ) >= KVideoPacketSize && |
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( i - lastsend ) <= KMaxPacketSize && |
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lastGOB ) |
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|
105 |
{ |
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106 |
__H263FORMAT_MEDIA_INT2( |
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107 |
"CMccH263NewPayloadEncoder::EncodeL(scan gobs), Sending packet f:", |
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108 |
lastsend, "len:", ( lastGOB - lastsend ) ) |
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|
109 |
|
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110 |
// Packet size exceeded send new RTP Packet |
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111 |
// +2 exclude first 2 0-bytes |
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112 |
packetData.Set( |
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113 |
frame.Mid( ( lastsend + KConst2 ), |
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114 |
( lastGOB - lastsend ) - KConst2 ) ); |
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115 |
|
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116 |
CreateNewBufferL( aMMFBuffer, |
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117 |
aDesBuffers, |
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118 |
packetData, |
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119 |
packetData.Length() + KConst4, |
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120 |
KMccValZero, |
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121 |
KMccValZero, |
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122 |
KMccValOne ); |
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123 |
|
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124 |
lastsend = lastGOB; |
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125 |
} |
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126 |
|
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127 |
lastGOB = i; |
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128 |
} |
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129 |
} |
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130 |
} |
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131 |
// Return pointer to begining of frame |
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132 |
dataPtr = frame.Ptr(); |
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133 |
} |
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|
134 |
|
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135 |
// Check that last packet does not exceed packet size |
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136 |
if ( ( frameLength - lastsend ) >= KVideoPacketSize && lastsend != 0 ) |
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137 |
{ |
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138 |
__H263FORMAT_MEDIA_INT2( |
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|
139 |
"CMccH263NewPayloadEncoder::EncodeL(last packet check), Sending packet f:", |
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140 |
lastsend, "len:", ( lastGOB - lastsend ) ) |
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|
141 |
|
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142 |
// +2 exlude first 2 0-bytes |
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143 |
packetData.Set( |
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|
144 |
frame.Mid( ( lastsend + KConst2 ), ( lastGOB - lastsend ) - KConst2 ) ); |
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|
145 |
|
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|
146 |
CreateNewBufferL( aMMFBuffer, |
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147 |
aDesBuffers, |
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148 |
packetData, |
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149 |
packetData.Length() + KConst4, |
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150 |
KMccValZero, |
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151 |
KMccValZero, |
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152 |
KMccValOne ); |
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|
153 |
|
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154 |
lastsend = lastGOB; |
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155 |
} |
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|
156 |
|
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|
157 |
// Send last packet to RTP API |
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158 |
if ( lastsend != 0 ) |
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|
159 |
{ |
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|
160 |
__H263FORMAT_MEDIA_INT2( |
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|
161 |
"CMccH263NewPayloadEncoder::EncodeL(last packet), Sending packet f:", |
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Revision: 201003
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|
162 |
lastsend, "len:", ( frameLength - lastsend ) ) |
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|
163 |
|
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|
164 |
// +2 exlude first 2 0-bytes |
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|
165 |
packetData.Set( |
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Revision: 201003
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|
166 |
frame.Mid( ( lastsend + KConst2 ),( frameLength - lastsend ) - KConst2 ) ); |
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|
167 |
|
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|
168 |
// Set marker to indicate last packet of current frame |
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|
169 |
CreateNewBufferL( aMMFBuffer, |
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|
170 |
aDesBuffers, |
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|
171 |
packetData, |
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|
172 |
packetData.Length() + KConst4, |
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|
173 |
KMccValOne, |
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|
174 |
KMccValZero, |
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|
175 |
KMccValOne ); |
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|
176 |
|
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|
177 |
} |
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Revision: 201003
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|
178 |
|
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|
179 |
// Special case no GOBs found try to send whole frame |
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|
180 |
else |
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|
181 |
{ |
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|
182 |
if ( buf->BufferSize() > TInt( KVideoPacketSize + KConst2 ) ) |
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|
183 |
{ |
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Revision: 201003
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|
184 |
__H263FORMAT_MEDIA( |
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Revision: 201003
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|
185 |
"CMccH263NewPayloadEncoder::EncodeL(no gobs), divide to multiple packets") |
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Revision: 201003
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|
186 |
|
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Revision: 201003
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|
187 |
// First packet |
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Revision: 201003
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|
188 |
// 2 exlude first 2 0-bytes |
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Revision: 201003
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|
189 |
packetData.Set( frame.Mid( KConst2, ( KVideoPacketSize - KConst2 ) ) ); |
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|
190 |
|
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|
191 |
// Set marker to indicate last packet of current frame |
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|
192 |
CreateNewBufferL( aMMFBuffer, |
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|
193 |
aDesBuffers, |
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|
194 |
packetData, |
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|
195 |
KVideoPacketSize, |
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Revision: 201003
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|
196 |
KMccValZero, |
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|
197 |
KMccValZero, |
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|
198 |
KMccValOne ); |
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Revision: 201003
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|
199 |
|
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|
200 |
// Other pieces |
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Revision: 201003
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diff
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|
201 |
TUint index = KVideoPacketSize, size; |
1bce908db942
Revision: 201003
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|
202 |
while (index < buf->BufferSize()) |
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Revision: 201003
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|
203 |
{ |
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Revision: 201003
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|
204 |
__H263FORMAT_MEDIA("CMccH263NewPayloadEncoder::EncodeL(no gobs), looping") |
1bce908db942
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|
205 |
|
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|
206 |
size= buf->BufferSize() - index; |
1bce908db942
Revision: 201003
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|
207 |
packetData.Set( |
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Revision: 201003
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parents:
diff
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|
208 |
frame.Mid( index, Min( TInt( KVideoPacketSize - KConst2 ), size ) ) ); |
1bce908db942
Revision: 201003
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diff
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|
209 |
|
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Revision: 201003
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|
210 |
// Set marker to indicate last packet of current frame |
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diff
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211 |
TInt marker = size > TInt( KVideoPacketSize ) ? KMccValZero : KMccValOne; |
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212 |
|
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CreateNewBufferL( aMMFBuffer, |
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aDesBuffers, |
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packetData, |
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Min( TInt( KVideoPacketSize ), size + KConst2 ), |
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marker, |
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KMccValOne, |
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KMccValOne ); |
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220 |
|
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index += KVideoPacketSize - KConst2; |
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} |
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} |
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224 |
else |
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225 |
{ |
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__H263FORMAT_MEDIA("CMccH263NewPayloadEncoder::EncodeL(no gobs), fits one packet") |
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227 |
|
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// 2 exlude first 2 0-bytes |
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packetData.Set( frame.Mid( KConst2, ( frameLength - KConst2 ) ) ); |
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230 |
|
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CreateNewBufferL( aMMFBuffer, |
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aDesBuffers, |
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packetData,frameLength, |
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KMccValOne, |
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KMccValZero, |
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KMccValOne ); |
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237 |
|
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} |
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} |
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240 |
|
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__H263FORMAT_MEDIA("CMccH263NewPayloadEncoder::EncodeL, exit") |
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242 |
|
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} |
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// ----------------------------------------------------------------------------- |
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// CMccH263NewPayloadEncoder::WriteHeaderData() |
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// Write payload header information byte |
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// (other items were commented in a header). |
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// ----------------------------------------------------------------------------- |
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249 |
// |
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TUint8 CMccH263NewPayloadEncoder::WriteHeaderData( TInt aByte ) |
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251 |
{ |
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__H263FORMAT_MEDIA("CMccH263NewPayloadEncoder::WriteHeaderData") |
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253 |
|
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TUint8 wbyte = 0; |
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switch ( aByte ) |
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256 |
{ |
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case 0: |
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258 |
{ |
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wbyte |= TUint8( 1 << KConst2 ); //indicate that fist 2 0-bytes are excluded |
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}break; //from start codes |
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case 1: |
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262 |
{ |
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}break; |
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default: |
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265 |
{ |
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}break; |
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} |
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return wbyte; |
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} |
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// ----------------------------------------------------------------------------- |
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// CMccH263NewPayloadEncoder::SetPayloadType() |
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// ----------------------------------------------------------------------------- |
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// |
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void CMccH263NewPayloadEncoder::SetPayloadType( TUint8 aPayloadType ) |
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{ |
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__H263FORMAT_MEDIA("CMccH263NewPayloadEncoder::SetPayloadType") |
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iSendHeader.iPayloadType = aPayloadType; |
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} |
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279 |
|
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// ----------------------------------------------------------------------------- |
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// CMccH263NewPayloadEncoder::CreateNewBufferL() |
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// ----------------------------------------------------------------------------- |
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// |
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void CMccH263NewPayloadEncoder::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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TInt aHeaderDataByteOne, |
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TInt aHeaderDataByteTwo ) |
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292 |
{ |
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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( aHeaderDataByteOne ) ); |
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newBuffer->Data().Append( WriteHeaderData( aHeaderDataByteTwo ) ); |
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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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301 |
|
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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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305 |
{ |
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iSequenceNumIncrementer++; |
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} |
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308 |
|
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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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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
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