Package libsidplay.components.c1541

Klasse NIB

java.lang.Object

libsidplay.components.c1541.DiskImage

libsidplay.components.c1541.G64

libsidplay.components.c1541.NIB

public class NIB
extends G64

Verschachtelte Klassen - Übersicht

Verschachtelte Klassen

Modifizierer und Typ	Klasse	Beschreibung
private static class	NIB.TrackCycle

Feldübersicht

Felder

Modifizierer und Typ	Feld	Beschreibung
(Package privat) static final String	IMAGE_HEADER	Expected G64 image header.
private static final int	MATCH_LENGTH
private static final int	MIN_TRACK_LENGTH
private static final int	MNIB_TRACK_LENGTH	NIB file track data length.
private final byte[]	mnibTrackData	MNIB file data of one track.
private final byte[]	nibHeader	NIB file header.
private static final int[]	speed_map_1541	Speed zone for each track (1-42).
private final byte[]	trackData	GCR data of one track.

Von Klasse geerbte Felder libsidplay.components.c1541.DiskImage

DIR_TRACK_1541, EXT_TRACKS_1541, extendImageListener, fd, fileName, gcr, MAX_OVERALL_SECTORS, MAX_TRACKS_1541, MIN_TRACKS_1541, RAW_TRACK_SIZE, readOnly, SPEED_MAP_1541, tracks, trackSize

Konstruktorübersicht

Konstruktoren

Konstruktor	Beschreibung
NIB(GCR gcr, String fileName, RandomAccessFile fd, boolean readOnly)	Constructor.

Methodenübersicht

Modifizierer und Typ	Methode	Beschreibung
protected void	attach()	Read the image in G64 format and fill this GCR data and speed zone data.
private boolean	equals(byte[] gcrData, int from, int to, int length)
private int	extractGCRtrack(byte[] dest, byte[] src)	Try to extract one complete cycle of GCR data from an 8kB buffer.
private int	findSector0(byte[] gcrData, int tracklen)
private int	findSectorGap(byte[] gcrData, int tracklen)
private int	findSync(byte[] gcrData, int pos, int gcrEnd)
private int	findTrackCycle(byte[] gcrData, NIB.TrackCycle cycle)
void	gcrDataWriteback(int track)	Write GCR data back to image.

Von Klasse geerbte Methoden libsidplay.components.c1541.DiskImage

attach, detach, getDiskSector, isReadOnly, save, setExtendImagePolicy

Von Klasse geerbte Methoden java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Felddetails

IMAGE_HEADER

static final String IMAGE_HEADER

Expected G64 image header.

Siehe auch:

• Konstantenfeldwerte

MNIB_TRACK_LENGTH

private static final int MNIB_TRACK_LENGTH

NIB file track data length.

Siehe auch:

• Konstantenfeldwerte

MATCH_LENGTH

private static final int MATCH_LENGTH

Siehe auch:

• Konstantenfeldwerte

MIN_TRACK_LENGTH

private static final int MIN_TRACK_LENGTH

Siehe auch:

• Konstantenfeldwerte

nibHeader

private final byte[] nibHeader

NIB file header.

trackData

private final byte[] trackData

GCR data of one track.

mnibTrackData

private final byte[] mnibTrackData

MNIB file data of one track.

speed_map_1541

private static final int[] speed_map_1541

Speed zone for each track (1-42).

Konstruktordetails

NIB

public NIB(GCR gcr,
 String fileName,
 RandomAccessFile fd,
 boolean readOnly)

Constructor.

Parameter:

gcr - GCR support

fileName - disk image file name

fd - file handle of the disk image

readOnly - mount read-only?

Methodendetails

attach

protected void attach()
               throws IOException

Read the image in G64 format and fill this GCR data and speed zone data.

Setzt außer Kraft:

attach in Klasse G64

Löst aus:

IOException - disk image file could not be attached

extractGCRtrack

private int extractGCRtrack(byte[] dest,
 byte[] src)

Try to extract one complete cycle of GCR data from an 8kB buffer. Align track to a sector gap if possible, else align to track 0, else copy cyclic loop from the beginning of a source. If buffer is pure nonsense, return tracklen = 0; [Input] destination buffer, source buffer [Return] length of copied track fragment

findTrackCycle

private int findTrackCycle(byte[] gcrData,
 NIB.TrackCycle cycle)

equals

private boolean equals(byte[] gcrData,
 int from,
 int to,
 int length)

findSector0

private int findSector0(byte[] gcrData,
 int tracklen)

findSync

private int findSync(byte[] gcrData,
 int pos,
 int gcrEnd)

findSectorGap

private int findSectorGap(byte[] gcrData,
 int tracklen)

gcrDataWriteback

public void gcrDataWriteback(int track)

Beschreibung aus Klasse kopiert: G64

Write GCR data back to image.

Setzt außer Kraft:

gcrDataWriteback in Klasse G64

Parameter:

track - dirty track