protected void Parse(Stream s)
{
if (s == null || s.Length == 0)
{
this.data = null; return;
}
s.Position = 0;
this.header = new DDSHeader();
this.header.Parse(s);
if (header.pixelFormat.Fourcc != FourCC.DST1 &&
header.pixelFormat.Fourcc != FourCC.DST3 &&
header.pixelFormat.Fourcc != FourCC.DST5)
{
this.isShuffled = false;
}
else
{
this.isShuffled = true;
}
this.Width = header.Width;
this.Height = header.Height;
BinaryReader r = new BinaryReader(s);
s.Position = 0;
this.data = r.ReadBytes((int)s.Length);
}
public void ImportToDST(Stream input)
{
var header = new DDSHeader();
header.Parse(input);
switch (header.pixelFormat.Fourcc)
{
case FourCC.DXT1:
header.pixelFormat.Fourcc = FourCC.DST1;
break;
case FourCC.DXT3:
throw new Exception("No sample yet");
case FourCC.DXT5:
header.pixelFormat.Fourcc = FourCC.DST5;
break;
case FourCC.DST1:
this.isShuffled = true;
break;
case FourCC.DST3:
this.isShuffled = true;
break;
case FourCC.DST5:
this.isShuffled = true;
break;
default:
throw new Exception("Not supported format. Read " + header.pixelFormat.Fourcc.ToString());
}
if (this.isShuffled)
{
input.Position = 0;
BinaryReader r = new BinaryReader(input);
this.data = r.ReadBytes((int)input.Length);
return;
}
using (MemoryStream ms = new MemoryStream())
{
BinaryWriter w = new BinaryWriter(ms);
w.Write(DDSHeader.Signature);
header.UnParse(ms);
this.header = header;
this.Width = this.header.Width;
this.Height = this.header.Height;
Shuffle(this.header, input, ms);
this.data = ms.ToArray();
}
}
private static void Shuffle(DDSHeader header, Stream input, Stream output)
{
BinaryWriter w = new BinaryWriter(output);
BinaryReader r = new BinaryReader(input);
input.Position = 128;
if (header.pixelFormat.Fourcc == FourCC.DST1)
{
using (MemoryStream block1 = new MemoryStream(), block2 = new MemoryStream())
{
BinaryWriter w1 = new BinaryWriter(block1), w2 = new BinaryWriter(block2);
int count = ((int)input.Length - 128) / 8;
for (int i = 0; i < count; i++)
{
w1.Write(r.ReadBytes(4));
w2.Write(r.ReadBytes(4));
}
w.Write(block1.ToArray());
w.Write(block2.ToArray());
}
}
else if (header.pixelFormat.Fourcc == FourCC.DST3)
{
throw new Exception("No sample yet");
}
else if (header.pixelFormat.Fourcc == FourCC.DST5) // dst5
{
using (MemoryStream ms0 = new MemoryStream(), ms1 = new MemoryStream(), ms2 = new MemoryStream(), ms3 = new MemoryStream())
{
BinaryWriter w0 = new BinaryWriter(ms0);
BinaryWriter w1 = new BinaryWriter(ms1);
BinaryWriter w2 = new BinaryWriter(ms2);
BinaryWriter w3 = new BinaryWriter(ms3);
int count = (int)(input.Length - 128) / 16;
for (int i = 0; i < count; i++)
{
w0.Write(r.ReadBytes(2));
w1.Write(r.ReadBytes(6));
w2.Write(r.ReadBytes(4));
w3.Write(r.ReadBytes(4));
}
w.Write(ms0.ToArray());
w.Write(ms2.ToArray());
w.Write(ms1.ToArray());
w.Write(ms3.ToArray());
}
}
}
protected void Parse(Stream s)
{
this.header = new DDSHeader();
this.header.Parse(s);
if (header.pixelFormat.Fourcc != FourCC.DST1 &&
header.pixelFormat.Fourcc != FourCC.DST3 &&
header.pixelFormat.Fourcc != FourCC.DST5)
{
throw new InvalidDataException("Texture does not need to be un-shuffled");
}
this.data = new byte[s.Length];
s.Read(this.data, 0, (int)s.Length);
}
protected void Parse(Stream s)
{
this.header = new DDSHeader();
this.header.Parse(s);
if (header.pixelFormat.Fourcc != FourCC.DST1 &&
header.pixelFormat.Fourcc != FourCC.DST3 &&
header.pixelFormat.Fourcc != FourCC.DST5)
{
throw new InvalidDataException("Texture does not need to be un-shuffled");
}
this.data = new byte[s.Length];
s.Read(this.data, 0, (int)s.Length);
}
protected void Parse(Stream s)
{
if (s == null || s.Length == 0) { this.data = null; return; }
s.Position = 0;
this.header = new DDSHeader();
this.header.Parse(s);
if (header.pixelFormat.Fourcc != FourCC.DST1 &&
header.pixelFormat.Fourcc != FourCC.DST3 &&
header.pixelFormat.Fourcc != FourCC.DST5)
{
this.isShuffled = false;
}
else
{
this.isShuffled = true;
}
this.Width = header.Width;
this.Height = header.Height;
BinaryReader r = new BinaryReader(s);
s.Position = 0;
this.data = r.ReadBytes((int)s.Length);
}
private Stream Unshuffle(DDSHeader header, Stream s)
{
const int dataOffset = 128;
var dataSize = (int)(s.Length - dataOffset);
s.Position = dataOffset;
BinaryReader r = new BinaryReader(s);
MemoryStream result = new MemoryStream();
BinaryWriter w = new BinaryWriter(result);
var temp = r.ReadBytes(dataSize);
if (header.pixelFormat.Fourcc == FourCC.DST1)
{
header.pixelFormat.Fourcc = FourCC.DXT1;
header.UnParse(result);
var blockOffset2 = 0;
var blockOffset3 = blockOffset2 + (dataSize >> 1);
// probably a better way to do this
var count = (blockOffset3 - blockOffset2) / 4;
for (int i = 0; i < count; i++)
{
result.Write(temp, blockOffset2, 4);
result.Write(temp, blockOffset3, 4);
blockOffset2 += 4;
blockOffset3 += 4;
}
}
else if (header.pixelFormat.Fourcc == FourCC.DST3) // DST3
{
header.pixelFormat.Fourcc = FourCC.DXT3;
header.UnParse(result);
var blockOffset0 = 0;
var blockOffset2 = blockOffset0 + (dataSize >> 1);
var blockOffset3 = blockOffset2 + (dataSize >> 2);
throw new NotImplementedException("no samples");
}
else if (header.pixelFormat.Fourcc == FourCC.DST5) // DST5
{
header.pixelFormat.Fourcc = FourCC.DXT5;
header.UnParse(result);
var blockOffset0 = 0;
var blockOffset2 = blockOffset0 + (dataSize >> 3);
var blockOffset1 = blockOffset2 + (dataSize >> 2);
var blockOffset3 = blockOffset1 + (6 * dataSize >> 4);
// probably a better way to do this
var count = (blockOffset2 - blockOffset0) / 2;
for (int i = 0; i < count; i++)
{
result.Write(temp, blockOffset0, 2);
result.Write(temp, blockOffset1, 6);
result.Write(temp, blockOffset2, 4);
result.Write(temp, blockOffset3, 4);
blockOffset0 += 2;
blockOffset1 += 6;
blockOffset2 += 4;
blockOffset3 += 4;
}
}
result.Position = 0;
return(result);
}
private static void Shuffle(DDSHeader header, Stream input, Stream output)
{
throw new NotImplementedException();
}
public void ImportToDST(Stream input)
{
var header = new DDSHeader();
header.Parse(input);
switch (header.pixelFormat.Fourcc)
{
case FourCC.DXT1:
header.pixelFormat.Fourcc = FourCC.DST1;
break;
case FourCC.DXT3:
throw new Exception("No sample yet");
case FourCC.DXT5:
header.pixelFormat.Fourcc = FourCC.DST5;
break;
case FourCC.DST1:
this.isShuffled = true;
break;
case FourCC.DST3:
this.isShuffled = true;
break;
case FourCC.DST5:
this.isShuffled = true;
break;
default:
throw new Exception("Not supported format. Read " + header.pixelFormat.Fourcc.ToString());
}
if(this.isShuffled)
{
input.Position = 0;
BinaryReader r = new BinaryReader(input);
this.data = r.ReadBytes((int)input.Length);
return;
}
using (MemoryStream ms = new MemoryStream())
{
BinaryWriter w = new BinaryWriter(ms);
w.Write(DDSHeader.Signature);
header.UnParse(ms);
this.header = header;
this.Width = this.header.Width;
this.Height = this.header.Height;
Shuffle(this.header, input, ms);
this.data = ms.ToArray();
}
}
private Stream Unshuffle(DDSHeader header, Stream s)
{
const int dataOffset = 128;
var dataSize = (int)(s.Length - dataOffset);
s.Position = dataOffset;
BinaryReader r = new BinaryReader(s);
MemoryStream result = new MemoryStream();
BinaryWriter w = new BinaryWriter(result);
var temp = r.ReadBytes(dataSize);
if (header.pixelFormat.Fourcc == FourCC.DST1)
{
header.pixelFormat.Fourcc = FourCC.DXT1;
w.Write(0x20534444); // DDS header
header.UnParse(result);
var blockOffset2 = 0;
var blockOffset3 = blockOffset2 + (dataSize >> 1);
// probably a better way to do this
var count = (blockOffset3 - blockOffset2) / 4;
for (int i = 0; i < count; i++)
{
result.Write(temp, blockOffset2, 4);
result.Write(temp, blockOffset3, 4);
blockOffset2 += 4;
blockOffset3 += 4;
}
}
else if (header.pixelFormat.Fourcc == FourCC.DST3) // DST3
{
header.pixelFormat.Fourcc = FourCC.DXT3;
w.Write(0x20534444);
header.UnParse(result);
var blockOffset0 = 0;
var blockOffset2 = blockOffset0 + (dataSize >> 1);
var blockOffset3 = blockOffset2 + (dataSize >> 2);
throw new NotImplementedException("no samples");
}
else if (header.pixelFormat.Fourcc == FourCC.DST5) // DST5
{
header.pixelFormat.Fourcc = FourCC.DXT5;
w.Write(0x20534444);
header.UnParse(result);
var blockOffset0 = 0;
var blockOffset2 = blockOffset0 + (dataSize >> 3);
var blockOffset1 = blockOffset2 + (dataSize >> 2);
var blockOffset3 = blockOffset1 + (6 * dataSize >> 4);
// probably a better way to do this
var count = (blockOffset2 - blockOffset0) / 2;
for (int i = 0; i < count; i++)
{
result.Write(temp, blockOffset0, 2);
result.Write(temp, blockOffset1, 6);
result.Write(temp, blockOffset2, 4);
result.Write(temp, blockOffset3, 4);
blockOffset0 += 2;
blockOffset1 += 6;
blockOffset2 += 4;
blockOffset3 += 4;
}
}
result.Position = 0;
return result;
}
private static void Shuffle(DDSHeader header, Stream input, Stream output)
{
BinaryWriter w = new BinaryWriter(output);
BinaryReader r = new BinaryReader(input);
input.Position = 128;
if(header.pixelFormat.Fourcc == FourCC.DST1)
{
using(MemoryStream block1 = new MemoryStream(), block2 = new MemoryStream())
{
BinaryWriter w1 = new BinaryWriter(block1), w2 = new BinaryWriter(block2);
int count = ((int)input.Length - 128) / 8;
for(int i = 0; i < count; i++)
{
w1.Write(r.ReadBytes(4));
w2.Write(r.ReadBytes(4));
}
w.Write(block1.ToArray());
w.Write(block2.ToArray());
}
}
else if(header.pixelFormat.Fourcc == FourCC.DST3)
{
throw new Exception("No sample yet");
}
else if(header.pixelFormat.Fourcc == FourCC.DST5) // dst5
{
using(MemoryStream ms0 = new MemoryStream(), ms1 = new MemoryStream(), ms2 = new MemoryStream(), ms3 = new MemoryStream())
{
BinaryWriter w0 = new BinaryWriter(ms0);
BinaryWriter w1 = new BinaryWriter(ms1);
BinaryWriter w2 = new BinaryWriter(ms2);
BinaryWriter w3 = new BinaryWriter(ms3);
int count = (int)(input.Length - 128) / 16;
for (int i = 0; i < count; i++)
{
w0.Write(r.ReadBytes(2));
w1.Write(r.ReadBytes(6));
w2.Write(r.ReadBytes(4));
w3.Write(r.ReadBytes(4));
}
w.Write(ms0.ToArray());
w.Write(ms2.ToArray());
w.Write(ms1.ToArray());
w.Write(ms3.ToArray());
}
}
}
private static void Shuffle(DDSHeader header, Stream input, Stream output)
{
throw new NotImplementedException();
}
