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Small refactor for WOZ2 write track

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This commit is contained in:
tomcw 2020-02-11 21:29:27 +00:00
parent d978a1789b
commit ad599680d2
2 changed files with 36 additions and 47 deletions
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2
source/Disk.cpp
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@ -620,7 +620,7 @@ ImageError_e Disk2InterfaceCard::InsertDisk(const int drive, LPCTSTR pszImageFil
const DWORD dwAttributes = GetFileAttributes(pszImageFilename);
if (dwAttributes == INVALID_FILE_ATTRIBUTES)
pFloppy->m_bWriteProtected = false; // Assume this is a new file to create
pFloppy->m_bWriteProtected = false; // Assume this is a new file to create (so it must be write-enabled to allow it to be formatted)
else
pFloppy->m_bWriteProtected = bForceWriteProtected ? true : (dwAttributes & FILE_ATTRIBUTE_READONLY);

45
source/DiskImageHelper.cpp
View File

@ -1134,7 +1134,8 @@ public:
return;
}
UINT extendedSize = 0;
UINT hdrExtendedSize = 0;
const UINT trkExtendedSize = CWOZHelper::WOZ1_TRACK_SIZE;
BYTE* pTrackMap = ((CWOZHelper::Tmap*)pImageInfo->pWOZTrackMap)->tmap;
BYTE indexFromTMAP = pTrackMap[(UINT)(phase * 2)];
@ -1154,8 +1155,7 @@ public:
if (track-1 >= 0) pTrackMap[track-1] = indexFromTMAP; // WOZ spec: track is also visible from neighboring quarter tracks
if (track+1 < CWOZHelper::MAX_QUARTER_TRACKS_5_25) pTrackMap[track+1] = indexFromTMAP;
const UINT trackSizeRoundedUp = CWOZHelper::WOZ1_TRACK_SIZE;
const UINT newImageSize = pImageInfo->uImageSize + trackSizeRoundedUp;
const UINT newImageSize = pImageInfo->uImageSize + trkExtendedSize;
BYTE* pNewImageBuffer = new BYTE[newImageSize];
memcpy(pNewImageBuffer, pImageInfo->pImageBuffer, pImageInfo->uImageSize);
@ -1173,9 +1173,9 @@ public:
pTRK->bitCount = nNibbles * 8;
CWOZHelper::WOZChunkHdr* pTrksHdr = (CWOZHelper::WOZChunkHdr*) &pImageInfo->pImageBuffer[pImageInfo->uOffset - sizeof(CWOZHelper::WOZChunkHdr)];
pTrksHdr->size += trackSizeRoundedUp;
pTrksHdr->size += trkExtendedSize;
extendedSize = pImageInfo->uOffset - sizeof(CWOZHelper::WOZHeader);
hdrExtendedSize = pImageInfo->uOffset - sizeof(CWOZHelper::WOZHeader);
}
// NB. pTrackImageBuffer[] is at least WOZ1_TRACK_SIZE in size
@ -1192,7 +1192,7 @@ public:
}
}
if (!WriteTrack(pImageInfo, indexFromTMAP, pTrackImageBuffer, CWOZHelper::WOZ1_TRACK_SIZE))
if (!WriteTrack(pImageInfo, indexFromTMAP, pTrackImageBuffer, trkExtendedSize))
{
_ASSERT(0);
LogFileOutput("WOZ1 Write Track: failed to write track (phase=%f) for file: %s\n", phase, pImageInfo->szFilename.c_str());
@ -1200,7 +1200,7 @@ public:
}
// TODO: zip/gzip: combine the track & hdr writes so that the file is only compressed & written once
if (!UpdateWOZHeaderCRC(pImageInfo, this, extendedSize))
if (!UpdateWOZHeaderCRC(pImageInfo, this, hdrExtendedSize))
{
_ASSERT(0);
LogFileOutput("WOZ1 Write Track: failed to write header CRC for file: %s\n", pImageInfo->szFilename.c_str());
@ -1258,7 +1258,8 @@ public:
// TODO: support writing a bitCount (ie. fractional nibbles)
virtual void Write(ImageInfo* pImageInfo, const float phase, LPBYTE pTrackImageBuffer, int nNibbles)
{
UINT extendedSize = 0;
UINT hdrExtendedSize = 0;
UINT trkExtendedSize = nNibbles;
BYTE* pTrackMap = ((CWOZHelper::Tmap*)pImageInfo->pWOZTrackMap)->tmap;
BYTE indexFromTMAP = pTrackMap[(BYTE)(phase * 2)];
@ -1278,12 +1279,12 @@ public:
if (track-1 >= 0) pTrackMap[track-1] = indexFromTMAP; // WOZ spec: track is also visible from neighboring quarter tracks
if (track+1 < CWOZHelper::MAX_QUARTER_TRACKS_5_25) pTrackMap[track+1] = indexFromTMAP;
const UINT trackSizeRoundedUp = (nNibbles + CWOZHelper::BLOCK_SIZE-1) & ~(CWOZHelper::BLOCK_SIZE-1);
const UINT newImageSize = pImageInfo->uImageSize + trackSizeRoundedUp;
trkExtendedSize = (nNibbles + CWOZHelper::BLOCK_SIZE-1) & ~(CWOZHelper::BLOCK_SIZE-1);
const UINT newImageSize = pImageInfo->uImageSize + trkExtendedSize;
BYTE* pNewImageBuffer = new BYTE[newImageSize];
memcpy(pNewImageBuffer, pImageInfo->pImageBuffer, pImageInfo->uImageSize);
memset(pNewImageBuffer+pImageInfo->uImageSize, 0, trackSizeRoundedUp);
memset(pNewImageBuffer+pImageInfo->uImageSize, 0, trkExtendedSize);
// NB. delete old pImageBuffer: pWOZTrackMap updated in WOZUpdateInfo() by parent function
@ -1294,29 +1295,18 @@ public:
CWOZHelper::TRKv2* pTRKS = (CWOZHelper::TRKv2*) &pImageInfo->pImageBuffer[pImageInfo->uOffset];
CWOZHelper::TRKv2* pTRK = &pTRKS[indexFromTMAP];
pTRK->blockCount = trackSizeRoundedUp / CWOZHelper::BLOCK_SIZE;
pTRK->blockCount = trkExtendedSize / CWOZHelper::BLOCK_SIZE;
pTRK->startBlock = 3;
for (UINT i=0; i<indexFromTMAP; i++)
pTRK->startBlock += pTRKS[i].blockCount;
pTRK->bitCount = nNibbles * 8;
CWOZHelper::WOZChunkHdr* pTrksHdr = (CWOZHelper::WOZChunkHdr*) (&pImageInfo->pImageBuffer[pImageInfo->uOffset] - sizeof(CWOZHelper::WOZChunkHdr));
pTrksHdr->size += trackSizeRoundedUp;
pTrksHdr->size += trkExtendedSize;
const long offset = pTRK->startBlock * CWOZHelper::BLOCK_SIZE;
memcpy(&pImageInfo->pImageBuffer[offset], pTrackImageBuffer, nNibbles);
if (!WriteImageData(pImageInfo, &pImageInfo->pImageBuffer[offset], trackSizeRoundedUp, offset)) // write rounded-up track data
{
_ASSERT(0);
LogFileOutput("WOZ2 Write Track: failed to write track (phase=%f) for file: %s\n", phase, pImageInfo->szFilename.c_str());
return;
hdrExtendedSize = ((BYTE*)pTRKS + sizeof(CWOZHelper::Trks) - pNewImageBuffer) - sizeof(CWOZHelper::WOZHeader);
}
extendedSize = ((BYTE*)pTRKS + sizeof(CWOZHelper::Trks) - pNewImageBuffer) - sizeof(CWOZHelper::WOZHeader);
}
else
{
CWOZHelper::TRKv2* pTRKS = (CWOZHelper::TRKv2*) &pImageInfo->pImageBuffer[pImageInfo->uOffset];
CWOZHelper::TRKv2* pTRK = &pTRKS[indexFromTMAP];
{
@ -1334,16 +1324,15 @@ public:
const long offset = pTRK->startBlock * CWOZHelper::BLOCK_SIZE;
memcpy(&pImageInfo->pImageBuffer[offset], pTrackImageBuffer, nNibbles);
if (!WriteImageData(pImageInfo, pTrackImageBuffer, nNibbles, offset))
if (!WriteImageData(pImageInfo, &pImageInfo->pImageBuffer[offset], trkExtendedSize, offset))
{
_ASSERT(0);
LogFileOutput("WOZ2 Write Track: failed to write track (phase=%f) for file: %s\n", phase, pImageInfo->szFilename.c_str());
return;
}
}
// TODO: zip/gzip: combine the track & hdr writes so that the file is only compressed & written once
if (!UpdateWOZHeaderCRC(pImageInfo, this, extendedSize))
if (!UpdateWOZHeaderCRC(pImageInfo, this, hdrExtendedSize))
{
_ASSERT(0);
LogFileOutput("WOZ2 Write Track: failed to write header CRC for file: %s\n", pImageInfo->szFilename.c_str());