author | Pat Downey <patd@symbian.org> |
Wed, 01 Sep 2010 12:35:00 +0100 | |
branch | RCL_3 |
changeset 16 | 012cc2ee6408 |
parent 15 | f92a4f87e424 |
permissions | -rw-r--r-- |
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/* |
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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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* |
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*/ |
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|
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#include <cs_port.h> |
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#include "AcmReader.h" |
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#include "AcmUtils.h" |
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#include "ActiveReader.h" |
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#include "ActiveReadOneOrMoreReader.h" |
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#include "CdcAcmClass.h" |
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#include "AcmPanic.h" |
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#include "AcmPort.h" |
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#include <usb/usblogger.h> |
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#ifdef __FLOG_ACTIVE |
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_LIT8(KLogComponent, "ECACM"); |
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#endif |
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CAcmReader* CAcmReader::NewL(CAcmPort& aPort, |
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TUint aBufSize) |
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/** |
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* Factory function. |
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* |
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* @param aPort The CAcmPort parent. |
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* @param aBufSize The size of the buffer. |
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* @return Ownership of a new CAcmReader. |
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*/ |
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{ |
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LOG_STATIC_FUNC_ENTRY |
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CAcmReader* self = new(ELeave) CAcmReader(aPort, aBufSize); |
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CleanupStack::PushL(self); |
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self->ConstructL(); |
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CLEANUPSTACK_POP(self); |
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return self; |
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} |
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CAcmReader::~CAcmReader() |
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/** |
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* Destructor. |
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*/ |
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{ |
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LOG_FUNC |
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ReadCancel(); |
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delete iBuffer; |
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} |
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CAcmReader::CAcmReader(CAcmPort& aPort, |
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TUint aBufSize) |
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/** |
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* Constructor. |
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* |
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* @param aPort The CPort parent. |
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* @param aBufSize The size of the buffer. |
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*/ |
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: iBufSize(aBufSize), |
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iInBuf(NULL,0,0), |
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iPort(aPort) |
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{ |
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} |
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void CAcmReader::ConstructL() |
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/** |
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* 2nd-phase construction. |
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*/ |
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{ |
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// Create iBuffer. |
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LOGTEXT(_L8("\tabout to create iBuffer")); |
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LEAVEIFERRORL(SetBufSize(iBufSize)); |
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} |
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void CAcmReader::Read(const TAny* aClientBuffer, TUint aMaxLen) |
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/** |
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* Read API. |
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* |
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* @param aClientBuffer Pointer to the client's memory space. |
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* @param aMaxLen Maximum length to read. |
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*/ |
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{ |
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LOG_FUNC |
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LOGTEXT3(_L8("\taClientBuffer=0x%08x, aMaxLen=%d"), |
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aClientBuffer, aMaxLen); |
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// Check we're open to requests and make a note of interesting data. |
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// including iLengthToGo |
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CheckNewRequest(aClientBuffer, aMaxLen); |
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iCurrentRequest.iRequestType = ERead; |
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// A read larger than our internal buffer limit will result in us doing |
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// multiple reads to the ports below. |
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// We used to just refuse the request with a KErrNoMemory. |
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if ( iTerminatorCount == 0 ) |
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{ |
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ReadWithoutTerminators(); |
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} |
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else |
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{ |
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ReadWithTerminators(); |
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} |
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} |
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void CAcmReader::ReadWithoutTerminators() |
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118 |
/** |
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119 |
* Process a read request given that no terminator characters are set. |
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120 |
*/ |
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121 |
{ |
16 | 122 |
LOG_FUNC |
123 |
||
0
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124 |
// Can we complete immediately from the buffer? |
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|
125 |
const TUint bufLen = BufLen(); |
16 | 126 |
LOGTEXT2(_L8("\thave %d bytes in buffer"), bufLen); |
127 |
LOGTEXT2(_L8("\tLength to go is %d bytes"), iLengthToGo); |
|
0
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128 |
if ( iLengthToGo <= bufLen ) |
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|
129 |
{ |
16 | 130 |
LOGTEXT2(_L8("\tcompleting request immediately from buffer with %d " |
131 |
"bytes"), iLengthToGo); |
|
0
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|
132 |
WriteBackData(iLengthToGo); |
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|
133 |
CompleteRequest(KErrNone); |
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134 |
return; |
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135 |
} |
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|
136 |
|
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|
137 |
// There isn't enough in the buffer to complete the request, so we write |
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|
138 |
// back as much as we have, and issue a Read for more. |
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|
139 |
if ( bufLen ) |
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|
140 |
{ |
16 | 141 |
LOGTEXT2(_L8("\twriting back %d bytes"), bufLen); |
0
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|
142 |
// Write back as much data as we've got already. |
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|
143 |
WriteBackData(bufLen); |
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144 |
} |
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|
145 |
|
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|
146 |
// Issue a read for the data we still need. |
16 | 147 |
LOGTEXT2(_L8("\tRequesting read - require %d bytes"),iLengthToGo); |
0
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|
148 |
IssueRead(); |
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149 |
} |
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|
150 |
|
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|
151 |
void CAcmReader::ReadWithTerminators() |
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|
152 |
/** |
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|
153 |
* Process a read request given that terminator characters are set. |
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|
154 |
*/ |
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|
155 |
{ |
16 | 156 |
LOG_FUNC |
157 |
||
0
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|
158 |
// Can we complete immediately from the buffer? Search the buffer we have |
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|
159 |
// for any terminators. If found, complete back to the client. If not |
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|
160 |
// found, start issuing ReadOneOrMores until we either find one or run out |
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|
161 |
// of client buffer. |
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|
162 |
|
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|
163 |
const TUint bufLen = BufLen(); |
16 | 164 |
LOGTEXT2(_L8("\tbufLen = %d"), bufLen); |
0
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|
165 |
if ( bufLen ) |
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|
166 |
{ |
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|
167 |
CheckForBufferedTerminatorsAndProceed(); |
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168 |
return; |
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|
169 |
} |
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|
170 |
|
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|
171 |
// There's no buffered data. Get some. |
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|
172 |
IssueReadOneOrMore(); |
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|
173 |
} |
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|
174 |
|
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|
175 |
void CAcmReader::ReadOneOrMore(const TAny* aClientBuffer, TUint aMaxLen) |
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|
176 |
/** |
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|
177 |
* ReadOneOrMore API. Note that this is implemented to completely ignore |
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|
178 |
* terminator characters. |
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|
179 |
* |
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|
180 |
* @param aClientBuffer Pointer to the client's memory space. |
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|
181 |
* @param aMaxLen Maximum length to read. |
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|
182 |
*/ |
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|
183 |
{ |
16 | 184 |
LOG_FUNC |
185 |
LOGTEXT3(_L8("\taClientBuffer=0x%08x, aMaxLen=%d"), |
|
186 |
aClientBuffer, aMaxLen); |
|
187 |
||
0
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|
188 |
// Check we're open to requests and make a note of interesting data. |
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|
189 |
CheckNewRequest(aClientBuffer, aMaxLen); |
16 | 190 |
|
15
f92a4f87e424
Revision: 201033
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0
diff
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|
191 |
iCurrentRequest.iRequestType = EReadOneOrMore; |
16 | 192 |
|
0
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|
193 |
// Check to see if there's anything in our buffer- if there is, we can |
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|
194 |
// complete immediately. |
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|
195 |
const TUint bufLen = BufLen(); |
16 | 196 |
LOGTEXT2(_L8("\tbufLen = %d"), bufLen); |
0
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|
197 |
if ( bufLen ) |
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|
198 |
{ |
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|
199 |
// Complete request with what's in the buffer |
16 | 200 |
LOGTEXT2(_L8("\tcompleting request immediately from buffer with %d " |
201 |
"bytes"), bufLen); |
|
0
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|
202 |
WriteBackData(bufLen); |
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|
203 |
CompleteRequest(KErrNone); |
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|
204 |
return; |
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|
205 |
} |
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|
206 |
|
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|
207 |
// Get some more data. |
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|
208 |
IssueReadOneOrMore(); |
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|
209 |
} |
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|
210 |
|
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|
211 |
void CAcmReader::NotifyDataAvailable() |
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|
212 |
/** |
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|
213 |
* NotifyDataAvailable API. If a request is pending completes the client with KErrInUse. |
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|
214 |
*/ |
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|
215 |
{ |
16 | 216 |
LOG_FUNC |
0
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|
217 |
if(iCurrentRequest.iClientPtr) // a request is pending |
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|
218 |
{ |
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|
219 |
iPort.NotifyDataAvailableCompleted(KErrInUse); |
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|
220 |
return; |
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|
221 |
} |
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|
222 |
iCurrentRequest.iClientPtr = iBuffer; |
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|
223 |
iCurrentRequest.iRequestType = ENotifyDataAvailable; |
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|
224 |
iPort.Acm()->NotifyDataAvailable(*this); |
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|
225 |
} |
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|
226 |
|
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|
227 |
void CAcmReader::NotifyDataAvailableCancel() |
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|
228 |
/** |
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|
229 |
* NotifyDataAvailableCancel API. Issues a ReadCancel() to abort pending requests on the LDD |
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|
230 |
* |
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|
231 |
*/ |
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|
232 |
{ |
16 | 233 |
LOG_FUNC |
0
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|
234 |
if (ENotifyDataAvailable == iCurrentRequest.iRequestType) |
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|
235 |
{ |
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|
236 |
// Cancel any outstanding request on the LDD. |
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|
237 |
if (iPort.Acm()) |
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|
238 |
{ |
16 | 239 |
LOGTEXT(_L8("\tiPort.Acm() exists- calling NotifyDataAvailableCancel() on it")); |
0
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iPort.Acm()->NotifyDataAvailableCancel(); |
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} |
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// Reset our flag to say there's no current outstanding request. What's |
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// already in our buffer can stay there. |
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iCurrentRequest.iClientPtr = NULL; |
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} |
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} |
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247 |
|
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void CAcmReader::ReadCancel() |
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/** |
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* Cancel API. Cancels any outstanding (Read or ReadOneOrMore) request. |
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*/ |
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{ |
16 | 253 |
LOG_FUNC |
254 |
||
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if (ENotifyDataAvailable != iCurrentRequest.iRequestType) |
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{ |
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// Cancel any outstanding request on the LDD. |
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if (iPort.Acm()) |
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{ |
16 | 260 |
LOGTEXT(_L8("\tiPort.Acm() exists- calling ReadCancel on it")); |
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iPort.Acm()->ReadCancel(); |
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} |
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263 |
|
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// Reset our flag to say there's no current outstanding request. What's |
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// already in our buffer can stay there. |
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iCurrentRequest.iClientPtr = NULL; |
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} |
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} |
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269 |
|
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TUint CAcmReader::BufLen() const |
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/** |
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* This function returns the amount of data (in bytes) still remaining in the |
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* circular buffer. |
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* |
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* @return Length of data in buffer. |
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*/ |
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{ |
16 | 278 |
LOGTEXT(_L8(">>CAcmReader::BufLen")); |
279 |
||
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TUint len = 0; |
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if ( BufWrap() ) |
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{ |
16 | 283 |
LOGTEXT(_L8("\tbuf wrapped")); |
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len = iBufSize - ( iOutPtr - iInPtr ); |
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} |
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else |
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{ |
16 | 288 |
LOGTEXT(_L8("\tbuf not wrapped")); |
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len = iInPtr - iOutPtr; |
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} |
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|
16 | 292 |
LOGTEXT2(_L8("<<CAcmReader::BufLen len=%d"), len); |
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return len; |
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} |
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295 |
|
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void CAcmReader::ResetBuffer() |
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/** |
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* Called by the port to clear the buffer. |
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*/ |
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{ |
16 | 301 |
LOG_FUNC |
302 |
||
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// A request is outstanding- C32 should protect against this. |
16 | 304 |
__ASSERT_DEBUG(!iCurrentRequest.iClientPtr, |
305 |
_USB_PANIC(KAcmPanicCat, EPanicInternalError)); |
|
0
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306 |
|
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// Reset the pointers. All data is 'lost'. |
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iOutPtr = iInPtr = iBufStart; |
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} |
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310 |
|
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TInt CAcmReader::SetBufSize(TUint aSize) |
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/** |
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* Called by the port to set the buffer size. Also used as a utility by us to |
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* create the buffer at instantiation. Note that this causes what was in the |
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* buffer at the time to be lost. |
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* |
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* @param aSize The required size of the buffer. |
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*/ |
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{ |
16 | 320 |
LOG_FUNC |
321 |
LOGTEXT2(_L8("\taSize=%d"), aSize); |
|
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||
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if ( iCurrentRequest.iClientPtr ) |
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{ |
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// A request is outstanding. C32 does not protect us against this. |
16 | 326 |
LOGTEXT(_L8("\t***a request is outstanding- returning KErrInUse")); |
0
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return KErrInUse; |
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} |
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329 |
|
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// Create the new buffer. |
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HBufC8* newBuf = HBufC8::New(aSize); |
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if ( !newBuf ) |
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{ |
16 | 334 |
LOGTEXT(_L8("\tfailed to create new buffer- returning KErrNoMemory")); |
0
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return KErrNoMemory; |
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} |
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delete iBuffer; |
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iBuffer = newBuf; |
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339 |
|
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// Update pointers etc. |
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TPtr8 ptr = iBuffer->Des(); |
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iBufStart = const_cast<TUint8*>(reinterpret_cast<const TUint8*>(ptr.Ptr())); |
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iBufSize = aSize; |
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CheckBufferEmptyAndResetPtrs(); |
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345 |
|
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return KErrNone; |
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} |
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348 |
|
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void CAcmReader::SetTerminators(const TCommConfigV01& aConfig) |
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/** |
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* API to change the terminator characters. |
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* |
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* @param aConfig The new configuration. |
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*/ |
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355 |
{ |
16 | 356 |
LOG_FUNC |
0
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357 |
|
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358 |
// C32 protects the port against having config set while there's a request |
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parents:
diff
changeset
|
359 |
// outstanding. |
16 | 360 |
__ASSERT_DEBUG(!iCurrentRequest.iClientPtr, |
361 |
_USB_PANIC(KAcmPanicCat, EPanicInternalError)); |
|
0
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
362 |
|
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
363 |
iTerminatorCount = aConfig.iTerminatorCount; |
16 | 364 |
LOGTEXT2(_L8("\tnow %d terminators:"), iTerminatorCount); |
0
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
365 |
for ( TUint ii = 0; ii < static_cast<TUint>(KConfigMaxTerminators) ; ii++ ) |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
366 |
{ |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
367 |
iTerminator[ii] = aConfig.iTerminator[ii]; |
16 | 368 |
LOGTEXT2(_L8("\t\t%d"), iTerminator[ii]); |
0
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
369 |
} |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
370 |
} |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
371 |
|
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
372 |
void CAcmReader::ReadCompleted(TInt aError) |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
373 |
/** |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
374 |
* Called by lower classes when an LDD Read completes. |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
375 |
* |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
376 |
* @param aError Error. |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
377 |
*/ |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
378 |
{ |
16 | 379 |
LOGTEXT2(_L8(">>CAcmReader::ReadCompleted aError=%d"), aError); |
0
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
380 |
|
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
381 |
const TUint justRead = static_cast<TUint>(iInBuf.Length()); |
16 | 382 |
LOGTEXT3(_L8("\tiInBuf length=%d, iLengthToGo=%d"), |
383 |
justRead, |
|
384 |
iLengthToGo); |
|
0
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
385 |
|
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
386 |
// This protects against a regression in the LDD- read requests shouldn't |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
387 |
// ever complete with zero bytes and KErrNone. |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
388 |
if ( justRead == 0 && aError == KErrNone ) |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
389 |
{ |
16 | 390 |
_USB_PANIC(KAcmPanicCat, EPanicInternalError); |
0
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
391 |
} |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
392 |
|
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
393 |
// The new data will have been added to our buffer. Move iInPtr up by the |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
394 |
// length just read. |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
395 |
iInPtr += justRead; |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
396 |
|
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
397 |
if ( aError ) |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
398 |
{ |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
399 |
// If the read failed, we complete back to the client and don't do |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
400 |
// anything more. (We don't want to get into retry strategies.) In a |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
401 |
// multi-stage Read the client will get any data already written back |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
402 |
// to them with IPCWrite. |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
403 |
CompleteRequest(aError); |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
404 |
return; |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
405 |
} |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
406 |
|
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
407 |
// calling this will write the data to the clients address space |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
408 |
// it will also complete the request if we've given the client enough data |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
409 |
// or will reissue another read if not |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
410 |
ReadWithoutTerminators(); |
16 | 411 |
|
412 |
LOGTEXT(_L8("<<CAcmReader::ReadCompleted")); |
|
0
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
413 |
} |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
414 |
|
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
415 |
void CAcmReader::ReadOneOrMoreCompleted(TInt aError) |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
416 |
/** |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
417 |
* Called by lower classes when an LDD ReadOneOrMore completes. |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
418 |
* |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
419 |
* @param aError Error. |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
420 |
*/ |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
421 |
{ |
16 | 422 |
LOGTEXT2(_L8(">>CAcmReader::ReadOneOrMoreCompleted aError=%d"), aError); |
0
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
423 |
|
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
424 |
const TUint justRead = static_cast<TUint>(iInBuf.Length()); |
16 | 425 |
LOGTEXT2(_L8("\tjustRead = %d"), justRead); |
0
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
426 |
|
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
427 |
// The new data will have been added to our buffer. Move iInPtr |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
428 |
// up by the length just read. |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
429 |
iInPtr += justRead; |
16 | 430 |
|
0
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
431 |
if ( aError ) |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
432 |
{ |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
433 |
// If the ReadOneOrMore failed, we complete back to the client and |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
434 |
// don't do anything more. The client will get any data already |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
435 |
// written back to them with IPCWrite. |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
436 |
CompleteRequest(aError); |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
437 |
return; |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
438 |
} |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
439 |
|
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
440 |
// TODO: may the LDD complete ROOM with zero bytes, eg if a ZLP comes in? |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
441 |
// NB The LDD is at liberty to complete a ReadPacket request with zero |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
442 |
// bytes and KErrNone, if the given packet was zero-length (a ZLP). In |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
443 |
// this case, we have to reissue the packet read until we do get some |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
444 |
// data. |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
445 |
if ( justRead == 0 ) |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
446 |
{ |
16 | 447 |
LOGTEXT(_L8("\twe appear to have a ZLP- reissuing ReadOneOrMore")); |
0
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
448 |
IssueReadOneOrMore(); |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
449 |
return; |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
450 |
} |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
451 |
|
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
452 |
if ( EReadOneOrMore == iCurrentRequest.iRequestType ) |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
453 |
{ |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
454 |
// Complete the client's request with as much data as we can. NB |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
455 |
// Opinion may be divided over whether to do this, or complete with |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
456 |
// just 1 byte. We implement the more generous approach. |
16 | 457 |
LOGTEXT2(_L8("\tcurrent request is ReadOneOrMore- completing with " |
458 |
"%d bytes"), justRead); |
|
0
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
459 |
WriteBackData(justRead); |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
460 |
CompleteRequest(KErrNone); |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
461 |
} |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
462 |
else |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
463 |
{ |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
464 |
// Outstanding request is a Read with terminators. (Except for |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
465 |
// ReadOneOrMore, we only request LDD::ReadOneOrMore in this case.) |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
466 |
|
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
467 |
// Process the buffer for terminators. |
16 | 468 |
LOGTEXT(_L8("\tcurrent request is Read with terminators")); |
0
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
469 |
CheckForBufferedTerminatorsAndProceed(); |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
470 |
} |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
471 |
|
16 | 472 |
LOGTEXT(_L8("<<CAcmReader::ReadOneOrMoreCompleted")); |
0
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
473 |
} |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
474 |
|
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
475 |
void CAcmReader::NotifyDataAvailableCompleted(TInt aError) |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
476 |
{ |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
477 |
/** |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
478 |
* Called by lower classes when data has arrived at the LDD after a |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
479 |
* NotifyDataAvailable request has been posted on the port. |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
480 |
* |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
481 |
* @param aError Error. |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
482 |
*/ |
16 | 483 |
LOGTEXT2(_L8(">>CAcmReader::NotifyDataAvailableCompleted aError=%d"), aError); |
484 |
||
0
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
485 |
// If the NotifyDataAvailable request failed, we complete back |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
486 |
// to the client and don't do anything more. |
16 | 487 |
CompleteRequest(aError); |
488 |
||
489 |
LOGTEXT(_L8("<<CAcmReader::NotifyDataAvailableCompleted")); |
|
0
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
490 |
} |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
491 |
|
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
492 |
void CAcmReader::CheckBufferEmptyAndResetPtrs() |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
493 |
/** |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
494 |
* Utility to assert that the buffer is empty and to reset the read and write |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
495 |
* pointers to the beginning of the buffer. We reset them there to cut down on |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
496 |
* fiddling around wrapping at the end of the buffer. |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
497 |
*/ |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
498 |
{ |
16 | 499 |
LOGTEXT(_L8("CAcmReader::CheckBufferEmptyAndResetPtrs")); |
500 |
||
501 |
if ( BufLen() != 0 ) |
|
0
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
502 |
{ |
16 | 503 |
_USB_PANIC(KAcmPanicCat, EPanicInternalError); |
0
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
504 |
} |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
505 |
|
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
506 |
iOutPtr = iInPtr = iBufStart; |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
507 |
} |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
508 |
|
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
509 |
void CAcmReader::CheckNewRequest(const TAny* aClientBuffer, TUint aMaxLen) |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
510 |
/** |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
511 |
* Utility function to check a Read or ReadOneOrMore request from the port. |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
512 |
* Also checks that there isn't a request already outstanding. Makes a note of |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
513 |
* the relevant parameters and sets up internal counters. |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
514 |
* |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
515 |
* @param aClientBuffer Pointer to the client's memory space. |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
516 |
* @param aMaxLen Maximum length to read. |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
517 |
*/ |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
518 |
{ |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
519 |
// The port should handle zero-length reads, not us. |
16 | 520 |
__ASSERT_DEBUG(aMaxLen > 0, _USB_PANIC(KAcmPanicCat, EPanicInternalError)); |
521 |
__ASSERT_DEBUG(aMaxLen <= static_cast<TUint>(KMaxTInt), |
|
522 |
_USB_PANIC(KAcmPanicCat, EPanicInternalError)); |
|
0
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
523 |
|
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
524 |
// Check we have no outstanding request already. |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
525 |
if ( iCurrentRequest.iClientPtr )// just panic in case of concurrent Read or ReadOneOrMore queries. |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
526 |
{ // in case of NotifyDataAvailable queries, we already have completed the client with KErrInUse. |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
527 |
// This code is kept for legacy purpose. That justifies the existence of IsNotifyDataAvailableQueryPending |
16 | 528 |
_USB_PANIC(KAcmPanicCat, EPanicInternalError); |
0
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
529 |
} |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
530 |
// Sanity check on what C32 gave us. |
16 | 531 |
__ASSERT_DEBUG(aClientBuffer, |
532 |
_USB_PANIC(KAcmPanicCat, EPanicInternalError)); |
|
0
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
533 |
|
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
534 |
// Make a note of interesting data. |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
535 |
iCurrentRequest.iClientPtr = aClientBuffer; |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
536 |
iLengthToGo = aMaxLen; |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
537 |
iOffsetIntoClientsMemory = 0; |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
538 |
} |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
539 |
|
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
540 |
void CAcmReader::CheckForBufferedTerminatorsAndProceed() |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
541 |
/** |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
542 |
* Checks for terminator characters in the buffer. Completes the client's |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
543 |
* request if possible, and issues further ReadOneOrMores for the appropriate |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
544 |
* amount if not. |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
545 |
*/ |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
546 |
{ |
16 | 547 |
LOG_FUNC |
548 |
||
15
f92a4f87e424
Revision: 201033
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
0
diff
changeset
|
549 |
TInt ret = FindTerminator(); |
16 | 550 |
LOGTEXT2(_L8("\tFindTerminator = %d"), ret); |
0
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
551 |
if ( ret < KErrNone ) |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
552 |
{ |
16 | 553 |
LOGTEXT(_L8("\tno terminator found")); |
0
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
554 |
const TUint bufLen = BufLen(); |
16 | 555 |
LOGTEXT2(_L8("\tbufLen = %d"), bufLen); |
0
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
556 |
// No terminator was found. Does the buffer already exceed the |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
557 |
// client's descriptor? |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
558 |
if ( bufLen >= iLengthToGo ) |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
559 |
{ |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
560 |
// Yes- complete as much data to the client as their |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
561 |
// descriptor can handle. |
16 | 562 |
LOGTEXT2(_L8("\tbuffer >= client descriptor- " |
563 |
"writing back %d bytes"), iLengthToGo); |
|
0
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
564 |
WriteBackData(iLengthToGo); |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
565 |
CompleteRequest(KErrNone); |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
566 |
} |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
567 |
else |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
568 |
{ |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
569 |
// No- write back the data we've got and issue a request to get |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
570 |
// some more data. |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
571 |
WriteBackData(bufLen); |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
572 |
IssueReadOneOrMore(); |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
573 |
} |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
574 |
} |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
575 |
else |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
576 |
{ |
16 | 577 |
LOGTEXT(_L8("\tterminator found!")); |
0
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
578 |
// Will the terminator position fit within the client's descriptor? |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
579 |
if ( static_cast<TUint>(ret) <= iLengthToGo ) |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
580 |
{ |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
581 |
// Yes- complete (up to the terminator) back to the client. |
16 | 582 |
LOGTEXT2(_L8("\tterminator will fit in client's descriptor- " |
583 |
"writing back %d bytes"), ret); |
|
0
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
584 |
WriteBackData(static_cast<TUint>(ret)); |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
585 |
CompleteRequest(KErrNone); |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
586 |
} |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
587 |
else |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
588 |
{ |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
589 |
// No- complete as much data to the client as their descriptor can |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
590 |
// handle. |
16 | 591 |
LOGTEXT2(_L8("\tterminator won't fit in client's descriptor- " |
592 |
"writing back %d bytes"), iLengthToGo); |
|
0
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
593 |
WriteBackData(iLengthToGo); |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
594 |
CompleteRequest(KErrNone); |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
595 |
} |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
596 |
} |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
597 |
} |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
598 |
|
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
599 |
void CAcmReader::WriteBackData(TUint aLength) |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
600 |
/** |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
601 |
* This function writes back data to the client address space. The write will |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
602 |
* be performed in one go if the data to be written back is not wrapped across |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
603 |
* the end of the circular buffer. If the data is wrapped, the write is done |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
604 |
* in two stages. The read pointer is updated to reflect the data consumed, as |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
605 |
* is the counter for remaining data required by the client (iLengthToGo), and |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
606 |
* the pointer into the client's memory (iOffsetIntoClientsMemory). |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
607 |
* |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
608 |
* @param aLength Amount of data to write back. |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
609 |
*/ |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
610 |
{ |
16 | 611 |
LOGTEXT2(_L8("CAcmReader::WriteBackData aLength = %d"), aLength); |
612 |
LOGTEXT2(_L8("\tBufLen() = %d"), BufLen()); |
|
0
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
613 |
|
16 | 614 |
LOGTEXT2(_L8("\tBufLen() = %d"), BufLen()); |
615 |
||
616 |
__ASSERT_DEBUG(aLength <= BufLen(), |
|
617 |
_USB_PANIC(KAcmPanicCat, EPanicInternalError)); |
|
0
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
618 |
|
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
619 |
const TUint lenBeforeWrap = iBufStart + iBufSize - iOutPtr; |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
620 |
|
16 | 621 |
LOGTEXT2(_L8("\tiOutPtr=%d"), iOutPtr - iBufStart); |
622 |
LOGTEXT2(_L8("\tiInPtr=%d"), iInPtr - iBufStart); |
|
623 |
LOGTEXT2(_L8("\tiOffsetIntoClientsMemory=%d"), iOffsetIntoClientsMemory); |
|
624 |
LOGTEXT2(_L8("\tlenBeforeWrap=%d"), lenBeforeWrap); |
|
0
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
625 |
|
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
626 |
if ( aLength > lenBeforeWrap ) |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
627 |
{ |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
628 |
// We'll have to do this in two stages... |
16 | 629 |
LOGTEXT(_L8("\twriting back in two stages")); |
630 |
||
631 |
__ASSERT_DEBUG(BufWrap(), |
|
632 |
_USB_PANIC(KAcmPanicCat, EPanicInternalError)); |
|
0
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
633 |
|
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
634 |
// Stage 1... |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
635 |
TPtrC8 ptrBeforeWrap(iOutPtr, lenBeforeWrap); |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
636 |
TInt err = iPort.IPCWrite(iCurrentRequest.iClientPtr, |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
637 |
ptrBeforeWrap, |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
638 |
iOffsetIntoClientsMemory); |
16 | 639 |
LOGTEXT2(_L8("\tIPCWrite = %d"), err); |
640 |
__ASSERT_DEBUG(!err, _USB_PANIC(KAcmPanicCat, EPanicInternalError)); |
|
0
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
641 |
static_cast<void>(err); |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
642 |
iOffsetIntoClientsMemory += lenBeforeWrap; |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
643 |
|
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
644 |
// Stage 2... |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
645 |
TInt seg2Len = aLength - lenBeforeWrap; |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
646 |
TPtrC8 ptrAfterWrap(iBufStart, seg2Len); |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
647 |
err = iPort.IPCWrite(iCurrentRequest.iClientPtr, |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
648 |
ptrAfterWrap, |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
649 |
iOffsetIntoClientsMemory); |
16 | 650 |
LOGTEXT2(_L8("\tIPCWrite = %d"), err); |
651 |
__ASSERT_DEBUG(!err, _USB_PANIC(KAcmPanicCat, EPanicInternalError)); |
|
0
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
652 |
iOffsetIntoClientsMemory += seg2Len; |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
653 |
|
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
654 |
// and set the pointers to show that we've consumed the data... |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
655 |
iOutPtr = iBufStart + seg2Len; |
16 | 656 |
LOGTEXT(_L8("\twrite in two segments completed")); |
0
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
657 |
} |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
658 |
else // We can do it in one go... |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
659 |
{ |
16 | 660 |
LOGTEXT(_L8("\twriting in one segment")); |
0
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
661 |
|
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
662 |
TPtrC8 ptr(iOutPtr, aLength); |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
663 |
TInt err = iPort.IPCWrite(iCurrentRequest.iClientPtr, |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
664 |
ptr, |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
665 |
iOffsetIntoClientsMemory); |
16 | 666 |
LOGTEXT2(_L8("\tIPCWrite = %d"), err); |
667 |
__ASSERT_DEBUG(!err, _USB_PANIC(KAcmPanicCat, EPanicInternalError)); |
|
0
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
668 |
static_cast<void>(err); |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
669 |
iOffsetIntoClientsMemory += aLength; |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
670 |
|
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
671 |
// Set the pointers to show that we've consumed the data... |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
672 |
iOutPtr += aLength; |
16 | 673 |
LOGTEXT(_L8("\twrite in one segment completed")); |
0
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
674 |
} |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
675 |
|
16 | 676 |
LOGTEXT2(_L8("\tiOutPtr=%d"), iOutPtr - iBufStart); |
677 |
LOGTEXT2(_L8("\tiOffsetIntoClientsMemory=%d"), iOffsetIntoClientsMemory); |
|
0
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
678 |
|
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
679 |
// Adjust iLengthToGo |
16 | 680 |
__ASSERT_DEBUG(iLengthToGo >= aLength, |
681 |
_USB_PANIC(KAcmPanicCat, EPanicInternalError)); |
|
0
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
682 |
iLengthToGo -= aLength; |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
683 |
} |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
684 |
|
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
685 |
void CAcmReader::CompleteRequest(TInt aError) |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
686 |
/** |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
687 |
* Utility to reset our 'outstanding request' flag and complete the client's |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
688 |
* request back to them. Does not actually write back data to the client's |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
689 |
* address space. |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
690 |
* |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
691 |
* @param aError The error code to complete with. |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
692 |
*/ |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
693 |
{ |
16 | 694 |
LOGTEXT2(_L8("CAcmReader::CompleteRequest aError=%d"), aError); |
0
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
695 |
|
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
696 |
// Set our flag to say that we no longer have an outstanding request. |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
697 |
iCurrentRequest.iClientPtr = NULL; |
16 | 698 |
|
0
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
699 |
if(ENotifyDataAvailable==iCurrentRequest.iRequestType) |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
700 |
{ |
16 | 701 |
LOGTEXT2(_L8("\tcalling NotifyDataAvailableCompleted with error %d"), aError); |
0
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
702 |
iPort.NotifyDataAvailableCompleted(aError); |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
703 |
} |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
704 |
else // read and readoneormore |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
705 |
{ |
16 | 706 |
LOGTEXT2(_L8("\tcalling ReadCompleted with error %d"), aError); |
0
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
707 |
iPort.ReadCompleted(aError); |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
708 |
} |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
709 |
} |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
710 |
|
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
711 |
void CAcmReader::IssueRead() |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
712 |
/** |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
713 |
* Issues a read request for N bytes, where N is the minimum of iLengthToGo, |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
714 |
* the LDD's limit on Read requests, and how far we are from the end of our |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
715 |
* buffer. Used when trying to satisfy an RComm Read without terminators. |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
716 |
* We enforce that the buffer is empty, so we don't have to worry about the |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
717 |
* buffer being wrapped and the consequent risk of overwriting. |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
718 |
*/ |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
719 |
{ |
16 | 720 |
LOG_FUNC |
721 |
||
0
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
722 |
CheckBufferEmptyAndResetPtrs(); |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
723 |
|
16 | 724 |
LOGTEXT2(_L8("\tiBufSize = %d"), iBufSize); |
725 |
LOGTEXT2(_L8("\tiInPtr = %d"), iInPtr - iBufStart); |
|
726 |
||
0
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
727 |
const TUint lenBeforeWrap = iBufStart + iBufSize - iInPtr; |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
728 |
|
16 | 729 |
LOGTEXT2(_L8("\tiLengthToGo = %d"), iLengthToGo); |
730 |
LOGTEXT2(_L8("\tlenBeforeWrap = %d"), lenBeforeWrap); |
|
0
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
731 |
|
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
732 |
const TUint limit = Min(static_cast<TInt>(iLengthToGo), |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
733 |
static_cast<TInt>(lenBeforeWrap)); |
16 | 734 |
LOGTEXT2(_L8("\tissuing read for %d bytes"), limit); |
0
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
735 |
iInBuf.Set(iInPtr, 0, limit); |
16 | 736 |
__ASSERT_DEBUG(iPort.Acm(), |
737 |
_USB_PANIC(KAcmPanicCat, EPanicInternalError)); |
|
0
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
738 |
iPort.Acm()->Read(*this, iInBuf, limit); |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
739 |
} |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
740 |
|
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
741 |
void CAcmReader::IssueReadOneOrMore() |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
742 |
/** |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
743 |
* Issues a read request for N bytes, where N is the minimum of iLengthToGo, |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
744 |
* and how far we are from the end of our buffer. Used when trying to satisfy |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
745 |
* an RComm ReadOneOrMore. |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
746 |
* We enforce that the buffer is empty, so we don't have to worry about the |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
747 |
* buffer being wrapped and the consequent risk of overwriting. |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
748 |
*/ |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
749 |
{ |
16 | 750 |
LOG_FUNC |
751 |
||
0
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
752 |
CheckBufferEmptyAndResetPtrs(); |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
753 |
|
16 | 754 |
LOGTEXT2(_L8("\tiBufSize = %d"), iBufSize); |
755 |
LOGTEXT2(_L8("\tiInPtr = %d"), iInPtr - iBufStart); |
|
756 |
||
0
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
757 |
const TUint lenBeforeWrap = iBufStart + iBufSize - iInPtr; |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
758 |
|
16 | 759 |
LOGTEXT2(_L8("\tiLengthToGo = %d"), iLengthToGo); |
760 |
LOGTEXT2(_L8("\tlenBeforeWrap = %d"), lenBeforeWrap); |
|
0
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
761 |
|
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
762 |
const TUint limit1 = Min(static_cast<TInt>(lenBeforeWrap), iLengthToGo); |
16 | 763 |
|
764 |
LOGTEXT2(_L8("\tissuing read one or more for %d bytes"), limit1); |
|
0
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
765 |
iInBuf.Set(iInPtr, 0, limit1); |
16 | 766 |
__ASSERT_DEBUG(iPort.Acm(), |
767 |
_USB_PANIC(KAcmPanicCat, EPanicInternalError)); |
|
0
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
768 |
iPort.Acm()->ReadOneOrMore(*this, iInBuf, limit1); |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
769 |
} |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
770 |
|
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
771 |
TInt CAcmReader::FindTerminator() const |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
772 |
/** |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
773 |
* This function searches the circular buffer for one of a number of |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
774 |
* termination characters. |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
775 |
* The search is conducted between the read and write pointers. The function |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
776 |
* copes with the wrapping of the buffer. |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
777 |
* |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
778 |
* @return If positive: the number of bytes between where iOutPtr is pointing |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
779 |
* at and where the terminator was found inclusive. Takes wrapping into |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
780 |
* account. If negative: error. |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
781 |
*/ |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
782 |
{ |
16 | 783 |
LOGTEXT(_L8(">>CAcmReader::FindTerminator")); |
784 |
||
0
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
785 |
TInt pos = 0; |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
786 |
TInt ret = KErrNone; |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
787 |
if ( !BufWrap() ) |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
788 |
{ |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
789 |
ret = PartialFindTerminator(iOutPtr, iInPtr, pos); |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
790 |
if ( !ret ) |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
791 |
{ |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
792 |
// Buffer wasn't wrapped, terminator found. |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
793 |
ret = pos; |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
794 |
} |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
795 |
} |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
796 |
else |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
797 |
{ |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
798 |
ret = PartialFindTerminator(iOutPtr, iBufStart+iBufSize, pos); |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
799 |
if ( !ret ) |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
800 |
{ |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
801 |
// Buffer was wrapped, but terminator was found in the section |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
802 |
// before the wrap. |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
803 |
ret = pos; |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
804 |
} |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
805 |
else |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
806 |
{ |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
807 |
ret = PartialFindTerminator(iBufStart, iInPtr, pos); |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
808 |
if ( !ret ) |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
809 |
{ |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
810 |
// Buffer was wrapped, terminator was found in the wrapped |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
811 |
// section. |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
812 |
const TUint lenBeforeWrap = iBufStart + iBufSize - iOutPtr; |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
813 |
ret = pos + lenBeforeWrap; |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
814 |
} |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
815 |
} |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
816 |
} |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
817 |
|
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
818 |
// Check we're returning what we said we would. |
16 | 819 |
__ASSERT_DEBUG(ret != KErrNone, |
820 |
_USB_PANIC(KAcmPanicCat, EPanicInternalError)); |
|
0
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
821 |
|
16 | 822 |
LOGTEXT2(_L8("<<CAcmReader::FindTerminator ret=%d"), ret); |
0
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
823 |
return ret; |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
824 |
} |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
825 |
|
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
826 |
TInt CAcmReader::PartialFindTerminator(TUint8* aFrom, |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
827 |
TUint8* aTo, |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
828 |
TInt& aPos) const |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
829 |
/** |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
830 |
* This function searches the buffer for one of a number of termination |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
831 |
* characters. The search is conducted between the pointers given. The |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
832 |
* function only searches a continuous buffer space, and does not respect the |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
833 |
* circular buffer wrap. |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
834 |
* |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
835 |
* @param aFrom The pointer at which to start searching. |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
836 |
* @param aTo The pointer one beyond where to stop searching. |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
837 |
* @param aPos The number of bytes beyond (and including) aFrom the terminator |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
838 |
* was found. That is, if the terminator was found adjacent to aFrom, aPos |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
839 |
* will be 2- the client can take this as meaning that 2 bytes are to be |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
840 |
* written back to the RComm client (aFrom and the one containing the |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
841 |
* terminator). |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
842 |
* @return KErrNone- a terminator was found. KErrNotFound- no terminator was |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
843 |
* found. |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
844 |
*/ |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
845 |
{ |
16 | 846 |
LOG_FUNC |
847 |
||
0
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
848 |
aPos = 1; |
16 | 849 |
LOGTEXT3(_L8("\taFrom=%d, aTo=%d"), aFrom-iBufStart, aTo-iBufStart); |
850 |
||
0
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
851 |
for ( TUint8* p = aFrom ; p < aTo ; p++, aPos++ ) |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
852 |
{ |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
853 |
for ( TUint i = 0 ; i < iTerminatorCount ; i++ ) |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
854 |
{ |
16 | 855 |
__ASSERT_DEBUG(p, _USB_PANIC(KAcmPanicCat, EPanicInternalError)); |
0
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
856 |
if ( *p == iTerminator[i] ) |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
857 |
{ |
16 | 858 |
LOGTEXT3(_L8("\tterminator %d found at aPos %d"), |
859 |
iTerminator[i], aPos); |
|
0
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
860 |
return KErrNone; |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
861 |
} |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
862 |
} |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
863 |
} |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
864 |
|
16 | 865 |
LOGTEXT(_L8("\tno terminator found")); |
0
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
866 |
return KErrNotFound; |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
867 |
} |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
868 |
|
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
869 |
// |
c9bc50fca66e
Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
870 |
// End of file |