public BLP(BinaryReader br)
{
_buffer = br.ReadBytes((int)br.BaseStream.Length);
br.BaseStream.Position = 0;
// Checking for correct Magic-Code
if (br.ReadUInt32() != 0x32504c42)
{
throw new Exception("Invalid BLP Format.");
}
// Reading type
Version = br.ReadUInt32();
if (Version != 1)
{
throw new Exception($"Invalid version.");
}
ColorEncoding = br.ReadEnum <ColorFileFormat>();
AlphaSize = br.ReadByte();
PreferredFormat = br.ReadEnum <BLPPixelFormat>();
HasMips = br.ReadByte();
Width = br.ReadInt32();
Height = br.ReadInt32();
MipOffsets = br.ReadStructArray <uint>(16);
MipSizes = br.ReadStructArray <uint>(16);
// fix miptable sizes
int mipCount = Math.Max(MipOffsets.Count(x => x != 0) - 1, 0);
Array.Resize(ref MipOffsets, mipCount);
Array.Resize(ref MipSizes, mipCount);
// When Encoding is 1, there is no image compression and we have to read a color palette
if (ColorEncoding == ColorFileFormat.Palette)
{
_paletteBGRA = br.ReadStructArray <CRGBA>(256);
}
else
{
_paletteBGRA = new CRGBA[256];
}
}
/// <summary>
/// Initializes a new instance of the <see cref="Warcraft.BLP.BLPHeader"/> class.
/// This constructor creates a header from input data read from a BLP file.
/// Usually, this is 148 bytes.
/// </summary>
/// <param name="inData">ExtendedData.</param>
public BLPHeader(byte[] inData)
{
using (MemoryStream ms = new MemoryStream(inData))
{
using (BinaryReader br = new BinaryReader(ms))
{
this.Signature = new string(br.ReadChars(4));
if (Enum.TryParse(this.Signature, out this.Format))
{
if (this.Format == BLPFormat.BLP2)
{
this.Version = (uint)br.ReadInt32();
}
if (this.Format == BLPFormat.BLP2)
{
this.CompressionType = (TextureCompressionType)br.ReadByte();
}
else
{
this.CompressionType = (TextureCompressionType)br.ReadUInt32();
}
if (this.Format == BLPFormat.BLP2)
{
this.AlphaBitDepth = br.ReadByte();
}
else
{
this.AlphaBitDepth = br.ReadUInt32();
}
// BLP0 & BLP1 stores the resolution here
if (this.Format < BLPFormat.BLP2)
{
this.Resolution = new Resolution(br.ReadUInt32(), br.ReadUInt32());
}
if (this.Format == BLPFormat.BLP2)
{
this.PixelFormat = (BLPPixelFormat)br.ReadByte();
}
else
{
this.PixelFormat = (BLPPixelFormat)br.ReadUInt32();
}
if (this.Format == BLPFormat.BLP2)
{
this.MipMapType = br.ReadByte();
}
else
{
this.MipMapType = br.ReadUInt32();
}
// BLP2 stores the resolution here
if (this.Format == BLPFormat.BLP2)
{
this.Resolution = new Resolution(br.ReadUInt32(), br.ReadUInt32());
}
this.MipMapOffsets = new List <uint>();
for (int i = 0; i < 16; ++i)
{
uint offset = br.ReadUInt32();
if (offset > 0)
{
this.MipMapOffsets.Add(offset);
}
}
this.MipMapSizes = new List <uint>();
for (int i = 0; i < 16; ++i)
{
uint size = br.ReadUInt32();
if (size > 0)
{
this.MipMapSizes.Add(size);
}
}
}
else
{
throw new FileLoadException("The provided data did not have a BLP signature.");
}
}
}
}
/// <summary>
/// Initializes a new instance of the <see cref="Warcraft.BLP.BLPHeader"/> class.
/// This constructor creates a header from input data read from a BLP file.
/// Usually, this is 148 bytes.
/// </summary>
/// <param name="InData">Data.</param>
public BLPHeader(byte[] InData)
{
using (MemoryStream ms = new MemoryStream(InData))
{
using (BinaryReader br = new BinaryReader(ms))
{
this.Signature = new string(br.ReadChars(4));
if (Enum.TryParse(this.Signature, out this.Format))
{
if (this.Format == BLPFormat.BLP2)
{
this.Version = (uint)br.ReadInt32();
}
if (this.Format == BLPFormat.BLP2)
{
this.CompressionType = (TextureCompressionType)br.ReadByte();
}
else
{
this.CompressionType = (TextureCompressionType)br.ReadUInt32();
}
if (this.Format == BLPFormat.BLP2)
{
this.AlphaBitDepth = br.ReadByte();
}
else
{
this.AlphaBitDepth = br.ReadUInt32();
}
// BLP0 & BLP1 stores the resolution here
if (this.Format < BLPFormat.BLP2)
{
this.Resolution = new Resolution(br.ReadUInt32(), br.ReadUInt32());
}
if (this.Format == BLPFormat.BLP2)
{
this.PixelFormat = (BLPPixelFormat)br.ReadByte();
}
else
{
this.PixelFormat = (BLPPixelFormat)br.ReadUInt32();
}
if (this.Format == BLPFormat.BLP2)
{
this.MipMapType = br.ReadByte();
}
else
{
this.MipMapType = br.ReadUInt32();
}
// BLP2 stores the resolution here
if (this.Format == BLPFormat.BLP2)
{
this.Resolution = new Resolution(br.ReadUInt32(), br.ReadUInt32());
}
this.MipMapOffsets = new List<uint>();
for (int i = 0; i < 16; ++i)
{
uint offset = br.ReadUInt32();
if (offset > 0)
{
this.MipMapOffsets.Add(offset);
}
}
this.MipMapSizes = new List<uint>();
for (int i = 0; i < 16; ++i)
{
uint size = br.ReadUInt32();
if (size > 0)
{
this.MipMapSizes.Add(size);
}
}
}
else
{
throw new FileLoadException("The provided data did not have a BLP signature.");
}
}
}
}
