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|
/*
/--------------------------------------------------------------------
|
| $Id: pldatasrc.cpp,v 1.8 2004/11/09 15:55:06 artcom Exp $
| Data Source Base Class
|
| This is a base class for a source of picture data.
| It defines methods to open, close, and read from data sources.
|
| Copyright (c) 1996-2002 Ulrich von Zadow
|
\--------------------------------------------------------------------
*/
#include "pldatasrc.h"
#include "plprognot.h"
#include "pldebug.h"
#include <string.h>
PLDataSource::PLDataSource
(
PLIProgressNotification * pNotification
)
: PLObject(),
m_pszName(NULL),
#ifdef _WIN32
m_pszwName(NULL),
m_bNameIsWide(false),
#endif
m_FileSize(0),
m_BytesRead(0),
m_bSrcLSBFirst(true), // Source byte order: true for intel order,
// false for Motorola et al. (MSB first).
m_pNotification(pNotification)
{
}
PLDataSource::~PLDataSource
()
{
}
void PLDataSource::Open
( const char * pszName,
int FileSize
)
{
// Data source may not be open already!
PLASSERT (!m_FileSize);
m_pszName = new char [strlen (pszName)+1];
strcpy (m_pszName, pszName);
m_FileSize = FileSize;
m_BytesRead = 0;
#ifdef _WIN32
m_bNameIsWide = false;
#endif
}
#ifdef _WIN32
void PLDataSource::OpenW
( const wchar_t * pszwName,
int FileSize
)
{
// Data source may not be open already!
PLASSERT (!m_FileSize);
m_pszwName = new wchar_t [wcslen (pszwName)+1];
wcscpy (m_pszwName, pszwName);
m_pszName = new char[strlen("Wide")+1];
strcpy(m_pszName,"Wide");
m_FileSize = FileSize;
m_BytesRead = 0;
m_bNameIsWide = true;
}
#endif
void PLDataSource::Close
()
{
if (m_pNotification)
// be smart and tell the world: ich habe fertig!
m_pNotification->OnProgress( 1);
delete [] m_pszName;
m_pszName = NULL;
#ifdef _WIN32
delete [] m_pszwName;
m_pszwName = NULL;
m_bNameIsWide = false;
#endif
m_FileSize = 0;
}
char * PLDataSource::GetName
()
{
return m_pszName;
}
#ifdef _WIN32
wchar_t * PLDataSource::GetNameW
()
{
return m_pszwName;
}
#endif
PLBYTE * PLDataSource::ReadNBytes
( int n
)
{
int OldBytesRead = m_BytesRead;
m_BytesRead += n;
if (m_BytesRead/1024 > OldBytesRead/1024 && m_pNotification)
m_pNotification->OnProgress (double(m_BytesRead)/m_FileSize);
CheckEOF();
return NULL;
}
// Jo Hagelberg 15.4.99:
// for use by other libs that handle progress internally (eg libjpeg)
void PLDataSource::OProgressNotification
( double part
)
{
if( m_pNotification)
m_pNotification->OnProgress( part);
}
void PLDataSource::Seek
( int n
)
{
m_BytesRead = n;
CheckEOF();
}
/*
/--------------------------------------------------------------------
|
| $Log: pldatasrc.cpp,v $
| Revision 1.8 2004/11/09 15:55:06 artcom
| changed #ifdef _WINDOWS to #ifdef _WIN32 (since this is a macro that actually is predefined on win32 platforms)
|
| Revision 1.7 2004/09/15 14:52:09 artcom
| - added PLPixelformatTest
| - added DICOM Decoder
|
| Revision 1.6 2004/09/11 12:41:35 uzadow
| removed plstdpch.h
|
| Revision 1.5 2003/08/03 12:03:20 uzadow
| Added unicode support; fixed some header includes.
|
| Revision 1.4 2002/11/18 14:44:39 uzadow
| Added PNG compression support, fixed docs.
|
| Revision 1.3 2002/03/31 13:36:41 uzadow
| Updated copyright.
|
| Revision 1.2 2001/10/06 22:37:08 uzadow
| Linux compatibility.
|
| Revision 1.1 2001/09/16 19:03:22 uzadow
| Added global name prefix PL, changed most filenames.
|
| Revision 1.8 2001/02/04 14:31:52 uzadow
| Member initialization list cleanup (Erik Hoffmann).
|
| Revision 1.7 2001/01/21 14:28:21 uzadow
| Changed array cleanup from delete to delete[].
|
| Revision 1.6 2000/01/16 20:43:13 anonymous
| Removed MFC dependencies
|
| Revision 1.5 1999/12/08 15:39:45 Ulrich von Zadow
| Unix compatibility changes
|
| Revision 1.4 1999/10/03 18:50:51 Ulrich von Zadow
| Added automatic logging of changes.
|
|
\--------------------------------------------------------------------
*/
|
