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casyncbuffer.cp
Package: 142_61_thumb_advanced.rar [view]
Upload User: dangjiwu
Upload Date: 2013-07-19
Package Size: 42019k
Code Size: 5k
Category:
Symbian
Development Platform:
Visual C++
- /* ***** BEGIN LICENSE BLOCK *****
- * Source last modified: $Id: casyncbuffer.cp,v 1.1.1.1.50.3 2004/07/09 01:44:13 hubbe Exp $
- *
- * Portions Copyright (c) 1995-2004 RealNetworks, Inc. All Rights Reserved.
- *
- * The contents of this file, and the files included with this file,
- * are subject to the current version of the RealNetworks Public
- * Source License (the "RPSL") available at
- * http://www.helixcommunity.org/content/rpsl unless you have licensed
- * the file under the current version of the RealNetworks Community
- * Source License (the "RCSL") available at
- * http://www.helixcommunity.org/content/rcsl, in which case the RCSL
- * will apply. You may also obtain the license terms directly from
- * RealNetworks. You may not use this file except in compliance with
- * the RPSL or, if you have a valid RCSL with RealNetworks applicable
- * to this file, the RCSL. Please see the applicable RPSL or RCSL for
- * the rights, obligations and limitations governing use of the
- * contents of the file.
- *
- * Alternatively, the contents of this file may be used under the
- * terms of the GNU General Public License Version 2 or later (the
- * "GPL") in which case the provisions of the GPL are applicable
- * instead of those above. If you wish to allow use of your version of
- * this file only under the terms of the GPL, and not to allow others
- * to use your version of this file under the terms of either the RPSL
- * or RCSL, indicate your decision by deleting the provisions above
- * and replace them with the notice and other provisions required by
- * the GPL. If you do not delete the provisions above, a recipient may
- * use your version of this file under the terms of any one of the
- * RPSL, the RCSL or the GPL.
- *
- * This file is part of the Helix DNA Technology. RealNetworks is the
- * developer of the Original Code and owns the copyrights in the
- * portions it created.
- *
- * This file, and the files included with this file, is distributed
- * and made available on an 'AS IS' basis, WITHOUT WARRANTY OF ANY
- * KIND, EITHER EXPRESS OR IMPLIED, AND REALNETWORKS HEREBY DISCLAIMS
- * ALL SUCH WARRANTIES, INCLUDING WITHOUT LIMITATION, ANY WARRANTIES
- * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, QUIET
- * ENJOYMENT OR NON-INFRINGEMENT.
- *
- * Technology Compatibility Kit Test Suite(s) Location:
- * http://www.helixcommunity.org/content/tck
- *
- * Contributor(s):
- *
- * ***** END LICENSE BLOCK ***** */
- #include "CAsyncBuffer.h"
- #include <string.h>
- const long kBlankLong[] = {'FNRD','fnrd'};
- CAsyncBuffer::CAsyncBuffer (
- Size inSize,
- QElemPtr inpb/*= nil*/)
- : mBuffer (nil)
- , mSize (0)
- , mLim (0)
- , mMark (0)
- , mBusy (FALSE)
- , mClearIndex (0)
- { /* begin CAsyncBuffer */
- ::memset (&mPBQueue, 0, sizeof (mPBQueue));
- PBFree (inpb);
- // if (nil != (mBuffer = (Ptr) new char [inSize]))
- if (nil != (mBuffer = (Ptr) ::NewPtr(inSize)))
- mSize = inSize;
- } /* end CAsyncBuffer */
- CAsyncBuffer::~CAsyncBuffer (void)
- { /* begin ~CAsyncBuffer */
- if (mBuffer)
- ::DisposePtr(mBuffer);
- // delete [] mBuffer;
- mBuffer = nil;
- mSize =
- mLim =
- mMark = 0;
- } /* end ~CAsyncBuffer */
- long CAsyncBuffer::Read (
- void *rcvBuff,
- long rcvBuffLen)
- { /* begin Read */
- long remaining = Remaining ();
- if (rcvBuffLen > remaining) rcvBuffLen = remaining;
- if (rcvBuffLen) {
- if (rcvBuff) ::BlockMoveData (mBuffer + mMark, (Ptr) rcvBuff, rcvBuffLen);
- mMark += rcvBuffLen;
- } /* if */
- return rcvBuffLen;
- } /* end Read */
- long CAsyncBuffer::Write (
- const void *sndBuff,
- long sndBuffLen)
- { /* begin Write */
- long remaining = mSize - mMark;
- if (sndBuffLen > remaining) sndBuffLen = remaining;
- if (sndBuffLen) {
- if (sndBuff) ::BlockMoveData ((Ptr) sndBuff, mBuffer + mMark, sndBuffLen);
- mMark += sndBuffLen;
- if (mLim < mMark) mLim = mMark;
- } /* if */
- return sndBuffLen;
- } /* end Write */
- void CAsyncBuffer::ClearBuffer (void)
- { /* begin ClearBuffer */
- long *p = (long *) mBuffer;
- for (long i = (mLim / sizeof (*p)); i-- > 0; )
- p[i] = kBlankLong[mClearIndex];
- } /* end ClearBuffer */
- void CAsyncBuffer::DebugBuffer (void)
- { /* begin DebugBuffer */
- for (short b = 0; b < (sizeof (kBlankLong) / sizeof (kBlankLong[0])); b++) {
- long blank = 0;
- long *p = (long *) mBuffer;
- for (long i = 0; i < (mLim / sizeof (*p)); i++)
- if (kBlankLong[b] == p [i]) blank++;
- if (blank > 10) DebugStr ((mClearIndex == b) ? "pNew" : "pStale");
- } /* for */
- } /* end DebugBuffer */