mirror of
https://github.com/AppleWin/AppleWin.git
synced 2024-12-23 00:30:17 +00:00
298 lines
7.7 KiB
C++
298 lines
7.7 KiB
C++
/*
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AppleWin : An Apple //e emulator for Windows
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Copyright (C) 1994-1996, Michael O'Brien
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Copyright (C) 1999-2001, Oliver Schmidt
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Copyright (C) 2002-2005, Tom Charlesworth
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Copyright (C) 2006-2010, Tom Charlesworth, Michael Pohoreski
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AppleWin is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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AppleWin is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with AppleWin; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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/* Description: Disk Image
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*
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* Author: Various
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*/
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#include "StdAfx.h"
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#include "DiskImage.h"
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#include "Common.h"
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#include "DiskImageHelper.h"
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static CDiskImageHelper sg_DiskImageHelper;
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static CHardDiskImageHelper sg_HardDiskImageHelper;
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//===========================================================================
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// Pre: *pWriteProtected_ already set to file's r/w status - see DiskInsert()
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ImageError_e ImageOpen( const std::string & pszImageFilename,
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ImageInfo** ppImageInfo,
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bool* pWriteProtected,
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const bool bCreateIfNecessary,
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std::string& strFilenameInZip,
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const bool bExpectFloppy /*=true*/)
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{
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if (!(!pszImageFilename.empty() && ppImageInfo && pWriteProtected))
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return eIMAGE_ERROR_BAD_POINTER;
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// CREATE A RECORD FOR THE FILE
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*ppImageInfo = new ImageInfo();
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ImageInfo* pImageInfo = *ppImageInfo;
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pImageInfo->bWriteProtected = *pWriteProtected;
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if (bExpectFloppy) pImageInfo->pImageHelper = &sg_DiskImageHelper;
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else pImageInfo->pImageHelper = &sg_HardDiskImageHelper;
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ImageError_e Err = pImageInfo->pImageHelper->Open(pszImageFilename.c_str(), pImageInfo, bCreateIfNecessary, strFilenameInZip);
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if (Err != eIMAGE_ERROR_NONE)
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{
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ImageClose(*ppImageInfo);
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*ppImageInfo = NULL;
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return Err;
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}
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if (pImageInfo->pImageType && pImageInfo->pImageType->GetType() == eImageHDV)
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{
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if (bExpectFloppy)
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Err = eIMAGE_ERROR_UNSUPPORTED_HDV;
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return Err;
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}
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// THE FILE MATCHES A KNOWN FORMAT
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_ASSERT(bExpectFloppy);
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if (!bExpectFloppy)
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return eIMAGE_ERROR_UNSUPPORTED;
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_ASSERT(pImageInfo->uNumTracks);
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*pWriteProtected = pImageInfo->bWriteProtected;
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return eIMAGE_ERROR_NONE;
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}
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//===========================================================================
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void ImageClose(ImageInfo* const pImageInfo)
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{
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pImageInfo->pImageHelper->Close(pImageInfo);
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delete pImageInfo;
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}
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//===========================================================================
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BOOL ImageBoot(ImageInfo* const pImageInfo)
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{
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BOOL result = 0;
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if (pImageInfo->pImageType->AllowBoot())
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result = pImageInfo->pImageType->Boot(pImageInfo);
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if (result)
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pImageInfo->bWriteProtected = 1;
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return result;
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}
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//===========================================================================
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void ImageReadTrack( ImageInfo* const pImageInfo,
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float phase, // phase [0..79] +/- 0.5
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LPBYTE pTrackImageBuffer,
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int* pNibbles,
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UINT* pBitCount,
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bool enhanceDisk)
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{
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_ASSERT(phase >= 0);
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if (phase < 0)
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phase = 0;
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const UINT track = pImageInfo->pImageType->PhaseToTrack(phase);
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if (pImageInfo->pImageType->AllowRW())
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{
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pImageInfo->pImageType->Read(pImageInfo, phase, pTrackImageBuffer, pNibbles, pBitCount, enhanceDisk);
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}
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else
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{
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*pNibbles = (int) ImageGetMaxNibblesPerTrack(pImageInfo);
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for (int i = 0; i < *pNibbles; i++)
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pTrackImageBuffer[i] = (BYTE)(rand() & 0xFF);
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}
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}
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//===========================================================================
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void ImageWriteTrack( ImageInfo* const pImageInfo,
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float phase, // phase [0..79] +/- 0.5
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LPBYTE pTrackImageBuffer,
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const int nNibbles)
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{
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_ASSERT(phase >= 0);
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if (phase < 0)
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phase = 0;
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const UINT track = pImageInfo->pImageType->PhaseToTrack(phase);
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if (pImageInfo->pImageType->AllowRW() && !pImageInfo->bWriteProtected)
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{
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pImageInfo->pImageType->Write(pImageInfo, phase, pTrackImageBuffer, nNibbles);
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eImageType imageType = pImageInfo->pImageType->GetType();
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if (imageType == eImageWOZ1 || imageType == eImageWOZ2)
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{
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DWORD dummy;
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bool res = sg_DiskImageHelper.WOZUpdateInfo(pImageInfo, dummy);
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_ASSERT(res);
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}
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}
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}
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//===========================================================================
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bool ImageReadBlock( ImageInfo* const pImageInfo,
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UINT nBlock,
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LPBYTE pBlockBuffer)
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{
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bool bRes = false;
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if (pImageInfo->pImageType->AllowRW())
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bRes = pImageInfo->pImageType->Read(pImageInfo, nBlock, pBlockBuffer);
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return bRes;
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}
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//===========================================================================
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bool ImageWriteBlock( ImageInfo* const pImageInfo,
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UINT nBlock,
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LPBYTE pBlockBuffer)
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{
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bool bRes = false;
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if (pImageInfo->pImageType->AllowRW() && !pImageInfo->bWriteProtected)
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bRes = pImageInfo->pImageType->Write(pImageInfo, nBlock, pBlockBuffer);
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return bRes;
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}
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//===========================================================================
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UINT ImageGetNumTracks(ImageInfo* const pImageInfo)
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{
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return pImageInfo ? pImageInfo->uNumTracks : 0;
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}
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bool ImageIsWriteProtected(ImageInfo* const pImageInfo)
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{
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return pImageInfo ? pImageInfo->bWriteProtected : true;
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}
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bool ImageIsMultiFileZip(ImageInfo* const pImageInfo)
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{
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return pImageInfo ? (pImageInfo->uNumValidImagesInZip > 1) : false;
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}
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const std::string & ImageGetPathname(ImageInfo* const pImageInfo)
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{
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static const std::string szEmpty;
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return pImageInfo ? pImageInfo->szFilename : szEmpty;
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}
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UINT ImageGetImageSize(ImageInfo* const pImageInfo)
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{
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return pImageInfo ? pImageInfo->uImageSize : 0;
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}
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bool ImageIsWOZ(ImageInfo* const pImageInfo)
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{
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return pImageInfo ? (pImageInfo->pImageType->GetType() == eImageWOZ1 || pImageInfo->pImageType->GetType() == eImageWOZ2) : false;
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}
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BYTE ImageGetOptimalBitTiming(ImageInfo* const pImageInfo)
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{
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return pImageInfo ? pImageInfo->optimalBitTiming : 32;
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}
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bool ImageIsBootSectorFormatSector13(ImageInfo* const pImageInfo)
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{
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return pImageInfo ? pImageInfo->bootSectorFormat == CWOZHelper::bootSector13 : false;
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}
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UINT ImagePhaseToTrack(ImageInfo* const pImageInfo, const float phase, const bool limit/*=true*/)
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{
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if (!pImageInfo)
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return 0;
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UINT track = pImageInfo->pImageType->PhaseToTrack(phase);
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if (limit)
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{
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const UINT numTracksInImage = ImageGetNumTracks(pImageInfo);
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track = (numTracksInImage == 0) ? 0
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: MIN(numTracksInImage - 1, track);
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}
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return track;
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}
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UINT ImageGetMaxNibblesPerTrack(ImageInfo* const pImageInfo)
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{
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return pImageInfo ? pImageInfo->maxNibblesPerTrack : NIBBLES_PER_TRACK;
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}
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void GetImageTitle(LPCTSTR pPathname, std::string & pImageName, std::string & pFullName)
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{
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TCHAR imagetitle[ MAX_DISK_FULL_NAME+1 ];
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LPCTSTR startpos = pPathname;
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// imagetitle = <FILENAME.EXT>
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if (_tcsrchr(startpos, TEXT(PATH_SEPARATOR)))
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startpos = _tcsrchr(startpos, TEXT(PATH_SEPARATOR))+1;
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_tcsncpy(imagetitle, startpos, MAX_DISK_FULL_NAME);
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imagetitle[MAX_DISK_FULL_NAME] = 0;
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// if imagetitle contains a lowercase char, then found=1 (why?)
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BOOL found = 0;
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int loop = 0;
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while (imagetitle[loop] && !found)
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{
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if (IsCharLower(imagetitle[loop]))
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found = 1;
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else
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loop++;
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}
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if ((!found) && (loop > 2))
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CharLowerBuff(imagetitle+1, _tcslen(imagetitle+1));
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// pFullName = <FILENAME.EXT>
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pFullName = imagetitle;
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if (imagetitle[0])
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{
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LPTSTR dot = imagetitle;
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if (_tcsrchr(dot, TEXT('.')))
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dot = _tcsrchr(dot, TEXT('.'));
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if (dot > imagetitle)
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*dot = 0;
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}
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// pImageName = <FILENAME> (ie. no extension)
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pImageName = imagetitle;
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}
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