public ImageMetaData ReadMetaData(TexEntry entry)
{
var info = new PsbTexMetaData {
BPP = 32
};
info.DataOffset = (int)entry.Offset;
info.FullWidth = entry.Width;
info.FullHeight = entry.Height;
info.Width = (uint)entry.TruncatedWidth;
info.Height = (uint)entry.TruncatedHeight;
info.TexType = entry.TexType;
return(info);
}
void ReadRgba8(Stream input, PsbTexMetaData meta, byte[] output)
{
int dst_stride = (int)meta.Width * 4;
long next_row = meta.DataOffset;
int src_stride = meta.FullWidth * 4;
int dst = 0;
for (uint i = 0; i < meta.Height; ++i)
{
input.Position = next_row;
input.Read(output, dst, dst_stride);
dst += dst_stride;
next_row += src_stride;
}
}
public ImageMetaData ReadMetaData(Stream stream)
{
stream.Position = 4;
using (var reader = new BinaryReader(stream, Encoding.UTF8, true))
{
var info = new PsbTexMetaData {
BPP = 32
};
info.DataOffset = reader.ReadInt32();
info.FullWidth = reader.ReadInt32();
info.FullHeight = reader.ReadInt32();
info.Width = reader.ReadUInt32();
info.Height = reader.ReadUInt32();
info.TexType = reader.ReadString();
return(info);
}
}
void ReadRgba4444(Stream input, PsbTexMetaData meta, byte[] output)
{
int dst_stride = (int)meta.Width * 4;
int src_stride = meta.FullWidth * 2;
int dst = 0;
var row = new byte[src_stride];
input.Position = meta.DataOffset;
for (uint i = 0; i < meta.Height; ++i)
{
input.Read(row, 0, src_stride);
int src = 0;
for (int x = 0; x < dst_stride; x += 4)
{
uint p = LittleEndian.ToUInt16(row, src);
src += 2;
output[dst++] = (byte)((p & 0x000Fu) * 0xFFu / 0x000Fu);
output[dst++] = (byte)((p & 0x00F0u) * 0xFFu / 0x00F0u);
output[dst++] = (byte)((p & 0x0F00u) * 0xFFu / 0x0F00u);
output[dst++] = (byte)((p & 0xF000u) * 0xFFu / 0xF000u);
}
}
}
