aiie/apple/woz.h
2020-07-04 08:06:09 -04:00

144 lines
4.1 KiB
C++

#ifndef __WOZ_H
#define __WOZ_H
#include <stdio.h>
#include <stdint.h>
#include <stdlib.h>
#include <unistd.h>
#include <stdbool.h>
#include "nibutil.h"
#include "disktypes.h"
#define DUMP_TRACK 0x01
#define DUMP_QTMAP 0x02
#define DUMP_QTCRC 0x04
// these all require DUMP_TRACK:
#define DUMP_TOFILE 0x10
#define DUMP_SECTOR 0x20
#define DUMP_RAWTRACK 0x40
#define DUMP_ORDEREDSECTOR 0x80
typedef struct _diskInfo {
uint8_t version; // Woz format version #
uint8_t diskType; // 1 = 5.25"; 2 = 3.5"
uint8_t writeProtected; // 1 = true
uint8_t synchronized; // were tracks written with cross-track sync?
uint8_t cleaned; // were MC3470 "fake bits" removed?
char creator[33]; // 32 chars of creator string and one terminator
uint8_t diskSides; // always 1 for a 5.25" disk
uint8_t bootSectorFormat; // 0=Unknown; 1=16-sector; 2=13-sector; 3=both
uint8_t optimalBitTiming; // 125-nS increments; standard == 32 (4uS)
uint16_t compatHardware; // 0=unknown compatability
uint16_t requiredRam; // value in K. 0 = unknown
uint16_t largestTrack; // # of 512-byte blocks used for largest track
} diskInfo;
typedef struct _trackInfo {
uint16_t startingBlock; // v2
uint32_t startingByte; // v1
uint16_t blockCount;
uint32_t bitCount;
uint8_t *trackData;
} trackInfo;
class Woz {
public:
Woz(bool verbose, uint8_t dumpflags);
~Woz();
bool readFile(const char *filename, bool preloadTracks, uint8_t forceType = T_AUTO);
bool writeFile(const char *filename, uint8_t forceType = T_AUTO);
uint8_t getNextWozBit(uint8_t datatrack);
void dumpInfo();
bool isSynchronized();
uint8_t dataTrackNumberForQuarterTrack(uint16_t qt);
bool flush();
void debug();
//protected:
// Interface for AiiE
bool writeNextWozBit(uint8_t datatrack, uint8_t bit);
bool writeNextWozByte(uint8_t datatrack, uint8_t b);
uint8_t nextDiskBit(uint8_t datatrack);
uint8_t nextDiskByte(uint8_t datatrack);
bool skipByte(uint8_t datatrack);
private:
void loadTrackByte(uint8_t datatrack);
void advanceBitStream(uint8_t datatrack);
bool readWozFile(const char *filename, bool preloadTracks);
bool readDskFile(const char *filename, bool preloadTracks, uint8_t subtype);
bool readNibFile(const char *filename, bool preloadTracks);
bool decodeWozTrackToNib(uint8_t phystrack, nibSector sectorData[16]);
bool decodeWozTrackToDsk(uint8_t phystrack, uint8_t subtype, uint8_t sectorData[256*16]);
bool writeWozFile(const char *filename, uint8_t subtype);
bool writeWozFile(int fd, uint8_t subtype);
bool writeDskFile(const char *filename, uint8_t subtype);
bool writeDskFile(int fd, uint8_t subtype);
bool writeNibFile(const char *filename);
bool writeNibFile(int fd);
bool writeWozTrack(int fd, uint8_t trackToWrite, uint8_t imageType);
bool writeDskTrack(int fd, uint8_t trackToWrite, uint8_t imageType);
bool writeNibTrack(int fd, uint8_t trackToWrite, uint8_t imageType);
uint8_t fakeBit();
bool parseTRKSChunk(uint32_t chunkSize);
bool parseTMAPChunk(uint32_t chunkSize);
bool parseInfoChunk(uint32_t chunkSize);
bool parseMetaChunk(uint32_t chunkSize);
bool writeInfoChunk(uint8_t version, int fdout);
bool writeTMAPChunk(uint8_t version, int fdout);
bool writeTRKSChunk(uint8_t version, int fdout);
bool readWozDataTrack(uint8_t datatrack);
bool readNibSectorData(uint8_t phystrack, uint8_t sector, nibSector *sectorData);
bool loadMissingTrackFromImage(uint8_t datatrack);
bool checksumWozDataTrack(uint8_t datatrack, uint32_t *retCRC);
void _initInfo();
private:
uint8_t imageType;
bool verbose;
uint8_t dumpflags;
bool autoFlushTrackData;
int8_t dataTrackDirty; // -1 means "none"
uint8_t quarterTrackMap[40*4];
diskInfo di;
trackInfo tracks[160];
uint8_t singleCachedTrack[0x1A00];
// cursor for track enumeration
protected:
int fd;
uint32_t trackPointer;
uint32_t lastReadPointer;
uint32_t trackBitCounter;
uint8_t trackByte;
uint8_t trackBitIdx;
uint8_t trackLoopCounter;
private:
char *metaData;
uint8_t randData, randPtr;
};
#endif