private void reconst()
{
short num = 0;
short num2;
for (num2 = 0; num2 < 627; num2 += 1)
{
if (this.son[(int)num2] >= 627)
{
this.freq[(int)num] = (ushort)((this.freq[(int)num2] + 1) / 2);
this.son[(int)num] = this.son[(int)num2];
num += 1;
}
}
num2 = 0;
for (num = 314; num < 627; num += 1)
{
short num3 = (short)(num2 + 1);
ushort num4 = this.freq[(int)num] = (ushort)(this.freq[(int)num2] + this.freq[(int)num3]);
num3 = (short)(num - 1);
while (num4 < this.freq[(int)num3])
{
num3 -= 1;
}
num3 += 1;
ushort length = (ushort)((num - num3) * 2);
LzssHuffmanStream.movmem(this.freq, (int)num3, this.freq, (int)(num3 + 1), (int)length);
this.freq[(int)num3] = num4;
LzssHuffmanStream.movmem(this.son, (int)num3, this.son, (int)(num3 + 1), (int)length);
this.son[(int)num3] = num2;
num2 += 2;
}
for (num2 = 0; num2 < 627; num2 += 1)
{
short num3;
if ((num3 = this.son[(int)num2]) >= 627)
{
this.prnt[(int)num3] = num2;
}
else
{
this.prnt[(int)num3] = (this.prnt[(int)(num3 + 1)] = num2);
}
}
}
private bool loadData(Stream stream)
{
Td0Serializer.TD0_MAIN_HEADER td0_MAIN_HEADER = Td0Serializer.TD0_MAIN_HEADER.Deserialize(stream);
if (td0_MAIN_HEADER == null)
{
return(false);
}
if (td0_MAIN_HEADER.Ver > 21 || td0_MAIN_HEADER.Ver < 10)
{
PlatformFactory.Platform.ShowWarning("Format version is not supported [0x" + td0_MAIN_HEADER.Ver.ToString("X2") + "]", "TD0 loader");
return(false);
}
if (td0_MAIN_HEADER.DataDOS != 0)
{
PlatformFactory.Platform.ShowWarning("'DOS Allocated sectors were copied' option is not supported!", "TD0 loader");
return(false);
}
Stream stream2 = stream;
if (td0_MAIN_HEADER.IsAdvandcedCompression)
{
if (td0_MAIN_HEADER.Ver < 20)
{
PlatformFactory.Platform.ShowWarning("Old Advanced compression is not implemented!", "TD0 loader");
return(false);
}
stream2 = new LzssHuffmanStream(stream);
}
string description = string.Empty;
if ((td0_MAIN_HEADER.Info & 128) != 0)
{
byte[] array = new byte[4];
stream2.Read(array, 0, 2);
stream2.Read(array, 2, 2);
byte[] array2 = new byte[(int)(FormatSerializer.getUInt16(array, 2) + 10)];
for (int i = 0; i < 4; i++)
{
array2[i] = array[i];
}
stream2.Read(array2, 4, 6);
stream2.Read(array2, 10, array2.Length - 10);
if (Td0Serializer.CalculateTD0CRC(array2, 2, (int)(8 + FormatSerializer.getUInt16(array2, 2))) != FormatSerializer.getUInt16(array2, 0))
{
PlatformFactory.Platform.ShowWarning("Info crc wrong", "TD0 loader");
}
StringBuilder stringBuilder = new StringBuilder();
int num = 10;
for (int j = 10; j < array2.Length; j++)
{
if (array2[j] == 0 && j > num)
{
stringBuilder.Append(Encoding.ASCII.GetString(array2, num, j - num));
stringBuilder.Append("\n");
num = j + 1;
}
}
description = stringBuilder.ToString();
}
int num2 = -1;
int num3 = -1;
ArrayList arrayList = new ArrayList();
for (;;)
{
Td0Serializer.TD0_TRACK td0_TRACK = Td0Serializer.TD0_TRACK.Deserialize(stream2);
if (td0_TRACK.SectorCount == 255)
{
break;
}
arrayList.Add(td0_TRACK);
if (num2 < td0_TRACK.Cylinder)
{
num2 = td0_TRACK.Cylinder;
}
if (num3 < td0_TRACK.Side)
{
num3 = td0_TRACK.Side;
}
}
num2++;
num3++;
if (num2 < 1 || num3 < 1)
{
PlatformFactory.Platform.ShowWarning("Invalid disk structure", "td0");
return(false);
}
this._diskImage.Init(num2, num3);
foreach (object obj in arrayList)
{
Td0Serializer.TD0_TRACK td0_TRACK2 = (Td0Serializer.TD0_TRACK)obj;
this._diskImage.GetTrackImage(td0_TRACK2.Cylinder, td0_TRACK2.Side).AssignSectors(td0_TRACK2.SectorList);
}
this._diskImage.Description = description;
return(true);
}
