aaru-dps/Aaru
1
0
Fork 0
mirror of https://github.com/aaru-dps/Aaru.git synced 2025-12-16 19:24:25 +00:00
Code Issues Packages Projects Releases Wiki Activity

Add writing support to Anex86 disk image.

Browse Source
This commit is contained in:
Natalia Portillo
2018-01-01 14:54:03 +00:00
parent 50d13abad3
commit a6e5f9a60b
1 changed files with 206 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

207
DiscImageChef.DiscImages/Anex86.cs
View File

@@ -33,6 +33,7 @@
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Runtime.InteropServices;
using DiscImageChef.CommonTypes;
using DiscImageChef.Console;
@@ -40,11 +41,12 @@ using DiscImageChef.Filters;
namespace DiscImageChef.DiscImages
{
public class Anex86 : IMediaImage
public class Anex86 : IWritableImage
{
IFilter anexImageFilter;
Anex86Header fdihdr;
ImageInfo imageInfo;
FileStream writingStream;
public Anex86()
{
@@ -277,6 +279,209 @@ namespace DiscImageChef.DiscImages
return null;
}
public IEnumerable<MediaTagType> SupportedMediaTags => new MediaTagType[] { };
public IEnumerable<SectorTagType> SupportedSectorTags => new SectorTagType[] { };
// TODO: Test with real hardware to see real supported media
public IEnumerable<MediaType> SupportedMediaTypes =>
new[]
{
MediaType.IBM23FD, MediaType.ECMA_66, MediaType.DOS_525_SS_DD_8, MediaType.DOS_525_SS_DD_9,
MediaType.ACORN_525_SS_SD_40, MediaType.ACORN_525_SS_DD_40, MediaType.ATARI_525_SD,
MediaType.ATARI_525_DD, MediaType.ATARI_525_ED, MediaType.DOS_525_DS_DD_8, MediaType.DOS_525_DS_DD_9,
MediaType.ECMA_70, MediaType.Apricot_35, MediaType.RX01, MediaType.RX02, MediaType.NEC_525_HD,
MediaType.ECMA_99_15, MediaType.NEC_8_SD, MediaType.RX03, MediaType.DOS_35_SS_DD_8,
MediaType.DOS_35_SS_DD_9, MediaType.ACORN_525_SS_SD_80, MediaType.RX50, MediaType.ATARI_35_SS_DD_11,
MediaType.ACORN_525_SS_DD_80, MediaType.ACORN_35_DS_DD, MediaType.DOS_35_DS_DD_8,
MediaType.DOS_35_DS_DD_9, MediaType.ACORN_35_DS_HD, MediaType.DOS_525_HD, MediaType.ACORN_525_DS_DD,
MediaType.DOS_35_HD, MediaType.XDF_525, MediaType.DMF, MediaType.XDF_35, MediaType.DOS_35_ED,
MediaType.FDFORMAT_35_DD, MediaType.FDFORMAT_525_HD, MediaType.FDFORMAT_35_HD, MediaType.NEC_35_TD,
MediaType.Unknown, MediaType.GENERIC_HDD
};
public IEnumerable<(string name, Type type, string description)> SupportedOptions =>
new(string name, Type type, string description)[] { };
public IEnumerable<string> KnownExtensions => new[] {".fdi", ".hdi"};
public bool IsWriting { get; private set; }
public string ErrorMessage { get; private set; }
public bool Create(string path, MediaType mediaType, Dictionary<string, string> options, ulong sectors,
uint sectorSize)
{
if(sectorSize == 0)
{
ErrorMessage = "Unsupported sector size";
return false;
}
if(sectors * sectorSize > int.MaxValue || sectors > (long)int.MaxValue * 8 * 33)
{
ErrorMessage = $"Too many sectors";
return false;
}
if(!SupportedMediaTypes.Contains(mediaType))
{
ErrorMessage = $"Unsupport media format {mediaType}";
return false;
}
imageInfo = new ImageInfo {MediaType = mediaType, SectorSize = sectorSize, Sectors = sectors};
try { writingStream = new FileStream(path, FileMode.CreateNew, FileAccess.ReadWrite, FileShare.None); }
catch(IOException e)
{
ErrorMessage = $"Could not create new image file, exception {e.Message}";
return false;
}
(ushort cylinders, byte heads, ushort sectorsPerTrack, uint bytesPerSector, MediaEncoding encoding, bool
variableSectorsPerTrack, MediaType type) geometry = Geometry.GetGeometry(mediaType);
fdihdr = new Anex86Header
{
hdrSize = 4096,
dskSize = (int)(sectors * sectorSize),
bps = (int)sectorSize,
spt = geometry.sectorsPerTrack,
heads = geometry.heads,
cylinders = geometry.cylinders
};
IsWriting = true;
ErrorMessage = null;
return true;
}
public bool WriteMediaTag(byte[] data, MediaTagType tag)
{
ErrorMessage = "Writing media tags is not supported.";
return false;
}
public bool WriteSector(byte[] data, ulong sectorAddress)
{
if(!IsWriting)
{
ErrorMessage = "Tried to write on a non-writable image";
return false;
}
if(data.Length != imageInfo.SectorSize)
{
ErrorMessage = "Incorrect data size";
return false;
}
if(sectorAddress >= imageInfo.Sectors)
{
ErrorMessage = "Tried to write past image size";
return false;
}
writingStream.Seek((long)(4096 + sectorAddress * imageInfo.SectorSize), SeekOrigin.Begin);
writingStream.Write(data, 0, data.Length);
ErrorMessage = "";
return true;
}
public bool WriteSectors(byte[] data, ulong sectorAddress, uint length)
{
if(!IsWriting)
{
ErrorMessage = "Tried to write on a non-writable image";
return false;
}
if(data.Length % imageInfo.SectorSize != 0)
{
ErrorMessage = "Incorrect data size";
return false;
}
if(sectorAddress + length > imageInfo.Sectors)
{
ErrorMessage = "Tried to write past image size";
return false;
}
writingStream.Seek((long)(4096 + sectorAddress * imageInfo.SectorSize), SeekOrigin.Begin);
writingStream.Write(data, 0, data.Length);
ErrorMessage = "";
return true;
}
public bool WriteSectorLong(byte[] data, ulong sectorAddress)
{
ErrorMessage = "Writing sectors with tags is not supported.";
return false;
}
public bool WriteSectorsLong(byte[] data, ulong sectorAddress, uint length)
{
ErrorMessage = "Writing sectors with tags is not supported.";
return false;
}
public bool SetTracks(List<Track> tracks)
{
ErrorMessage = "Unsupported feature";
return false;
}
public bool Close()
{
if(!IsWriting)
{
ErrorMessage = "Image is not opened for writing";
return false;
}
if(imageInfo.MediaType == MediaType.Unknown || imageInfo.MediaType == MediaType.GENERIC_HDD)
{
// TODO: Interface to set geometry
imageInfo.Cylinders = (uint)(imageInfo.Sectors / 8 / 33);
imageInfo.Heads = 8;
imageInfo.SectorsPerTrack = 33;
while(imageInfo.Cylinders == 0)
{
imageInfo.Heads--;
if(imageInfo.Heads == 0)
{
imageInfo.SectorsPerTrack--;
imageInfo.Heads = 8;
}
imageInfo.Cylinders = (uint)(imageInfo.Sectors / imageInfo.Heads / imageInfo.SectorsPerTrack);
if(imageInfo.Cylinders == 0 && imageInfo.Heads == 0 && imageInfo.SectorsPerTrack == 0) break;
}
}
byte[] hdr = new byte[Marshal.SizeOf(fdihdr)];
IntPtr hdrPtr = Marshal.AllocHGlobal(Marshal.SizeOf(fdihdr));
Marshal.StructureToPtr(fdihdr, hdrPtr, true);
Marshal.Copy(hdrPtr, hdr, 0, hdr.Length);
Marshal.FreeHGlobal(hdrPtr);
writingStream.Seek(0, SeekOrigin.Begin);
writingStream.Write(hdr, 0, hdr.Length);
writingStream.Flush();
writingStream.Close();
IsWriting = false;
return true;
}
public bool SetMetadata(ImageInfo metadata)
{
return true;
}
[StructLayout(LayoutKind.Sequential, Pack = 1)]
struct Anex86Header
{