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Amiga Plus 2004 #11
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Amiga Plus CD - 2004 - No. 11.iso
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Acvt.lha
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Acvt 1.07
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cdisk.cpp
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C/C++ Source or Header
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1999-06-10
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// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2 of the License, or
// any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
//
#include "cdisk.h"
#include "cdsk_atr.h"
#include "cdsk_xfd.h"
#include "cdsk_dcm.h"
#include "cdsk_scp.h"
CDisk::CDisk()
{
m_bOpened = FALSE;
m_pbtMemory = NULL;
#ifdef _MEMORY_DUMP_
printf( "CDisk constructed: %08X\n", this );
#endif
}
CDisk::~CDisk()
{
if ( m_pbtMemory )
{
delete [] m_pbtMemory;
m_pbtMemory = NULL;
}
#ifdef _MEMORY_DUMP_
printf( "CDisk destructed: %08X\n", this );
#endif
}
BOOL CDisk::Duplicate( CDisk* pDisk )
{
if ( !Format( & ( pDisk->m_geometry ) ) )
return FALSE;
memcpy( m_pbtMemory, pDisk->m_pbtMemory, pDisk->m_iAllocated );
return TRUE;
}
BOOL CDisk::Format( DISK_GEOMETRY* pgeo )
{
int iSectors = pgeo->iSides * pgeo->iTracks * pgeo->iSectorsPerTrack;
if ( m_pbtMemory )
delete [] m_pbtMemory;
m_iAllocated = iSectors * pgeo->iBytesPerSector;
m_pbtMemory = new BYTE [ m_iAllocated ];
if ( !m_pbtMemory )
{
sprintf( m_szLastError, "DISK: Can't format - Not enough memory!" );
return FALSE;
}
memset( m_pbtMemory, 0, m_iAllocated );
m_geometry.iSides = pgeo->iSides;
m_geometry.iTracks = pgeo->iTracks;
m_geometry.iSectorsPerTrack = pgeo->iSectorsPerTrack;
m_geometry.iBytesPerSector = pgeo->iBytesPerSector;
m_geometry.iSectors = iSectors;
return TRUE;
}
BOOL CDisk::ReadSector( void* pBuf, int iStartSec )
{
if ( iStartSec && ( iStartSec <= m_geometry.iSectors ) )
memcpy( pBuf, m_pbtMemory + ( iStartSec - 1 ) * m_geometry.iBytesPerSector, m_geometry.iBytesPerSector );
else
{
sprintf( m_szLastError, "DISK: Reading non-existent sector: %04X", iStartSec );
return FALSE;
}
return TRUE;
}
BOOL CDisk::ReadSectors( void* pBuf, int iStartSec, int iSecs )
{
while( iSecs )
{
if ( !ReadSector( pBuf, iStartSec ) )
return FALSE;
iStartSec++;
iSecs--;
pBuf = (BYTE*)pBuf + m_geometry.iBytesPerSector;
}
return TRUE;
}
BOOL CDisk::WriteSector( int iStartSec, void* pBuf )
{
//printf( " ws: %d ", iStartSec );
if ( iStartSec && ( iStartSec <= m_geometry.iSectors ) )
memcpy( m_pbtMemory + ( iStartSec - 1 ) * m_geometry.iBytesPerSector, pBuf, m_geometry.iBytesPerSector );
else
{
sprintf( m_szLastError, "DISK: Writing non-existent sector: %04X", iStartSec );
return FALSE;
}
return TRUE;
}
void GuessClassicSizes( int iSectors, int iSectorSize, DISK_GEOMETRY* pGeometry )
{
pGeometry->iSides = 1;
pGeometry->iBytesPerSector = iSectorSize;
pGeometry->iTracks = 1;
pGeometry->iSectorsPerTrack = iSectors;
switch( iSectors )
{
case 720:
switch( iSectorSize )
{
case 0x80:
pGeometry->iTracks = 40;
pGeometry->iSectorsPerTrack = 18;
break;
case 0x100:
pGeometry->iTracks = 40;
pGeometry->iSectorsPerTrack = 18;
break;
}
break;
case 1040:
pGeometry->iTracks = 40;
pGeometry->iSectorsPerTrack = 26;
break;
}
}
//returns ptr to disk type name
char* GetDiskTypeName( DISK_TYPE disktype )
{
switch( disktype )
{
case DISK_XFD:
return "XFD";
case DISK_ATR:
return "ATR";
case DISK_XFDb:
return "XFDb";
case DISK_ATRb:
return "ATRb";
case DISK_DCM:
return "DCM";
case DISK_SCP:
return "SCP";
default:
return "None";
}
}
//returns ptr to disk type extension
char* GetDiskTypeExt( DISK_TYPE disktype )
{
switch( disktype )
{
case DISK_XFD:
case DISK_XFDb:
return "xfd";
case DISK_ATR:
case DISK_ATRb:
return "atr";
case DISK_DCM:
return "dcm";
case DISK_SCP:
return "scp";
default:
return "xxx";
}
}
DISKINIT_RETCODE InitializeDisk( CDisk** ppDisk, DISK_TYPE disktype, char* szFname, BOOL bVerbose, BOOL bRepair, BOOL bRepairAuto )
{
switch( disktype )
{
case DISK_ATR:
*ppDisk = new CAtr();
break;
case DISK_SCP:
*ppDisk = new CScp();
break;
case DISK_DCM:
*ppDisk = new CDcm();
break;
case DISK_XFD:
*ppDisk = new CXfd();
break;
default:
if ( bVerbose )
fprintf( stderr, "Invalid disk type specified!\n" );
return DI_RET_CANT_CONTINUE;
}
if ( !*ppDisk )
{
if ( bVerbose )
fprintf( stderr, "Can't initialize disk driver!\n" );
return DI_RET_CONTINUE;
}
if ( !(*ppDisk)->Load( szFname, bRepair, bRepairAuto ) )
{
int iError = (*ppDisk)->GetErrorCode();
DISKINIT_RETCODE ret = DI_RET_CONTINUE;
switch( iError )
{
case CATR_FORMAT_VIOLATED:
case CXFD_FORMAT_VIOLATED:
case CDISK_ERROR_CANT_OPEN:
case CDCM_FORMAT_VIOLATED:
case CSCP_FORMAT_VIOLATED:
ret = DI_RET_CANT_CONTINUE;
break;
}
if ( bVerbose || ( ret == DI_RET_CANT_CONTINUE ) )
{
printf( "Input file '%s' ", szFname );
printf( "(%s)\n", GetDiskTypeName( disktype ) );
printf( "Load failed because:\n%s\n", (*ppDisk)->GetLastError() );
}
if ( ret != DI_RET_OK )
{
delete *ppDisk;
return ret;
}
}
return DI_RET_OK;
}