private void WriteImageFile(Stream output, ImageInfo imageInfo)
{
using var bw = new BinaryWriterX(output);
// Calculate offsets
var unkRegion1Offset = HeaderSize;
var unkRegion2Offset = unkRegion1Offset + _unkRegion1.Length;
var tileIndexOffset = unkRegion2Offset + _unkRegion2.Length;
// Split tiles
var tileBitDepth = GtxtSupport.IndexFormats[_ltHeader.indexFormat].BitDepth;
var(imageData, tileData) = SplitTiles(new MemoryStream(imageInfo.ImageData), tileBitDepth);
var imageDataOffset = tileIndexOffset + tileData.Length;
// Write image data
output.Position = imageDataOffset;
imageData.CopyTo(output);
// Write tile data
output.Position = tileIndexOffset;
tileData.CopyTo(output);
// Write unknown regions
output.Position = unkRegion1Offset;
bw.Write(_unkRegion1);
bw.Write(_unkRegion2);
// Update header
_ltHeader.indexFormat = (byte)imageInfo.ImageFormat;
_ltHeader.width = (short)imageInfo.ImageSize.Width;
_ltHeader.height = (short)imageInfo.ImageSize.Height;
_ltHeader.paddedWidth = (short)GtxtSupport.ToPowerOfTwo(imageInfo.ImageSize.Width);
_ltHeader.paddedHeight = (short)((imageInfo.ImageSize.Height + 7) & ~7);
_ltHeader.unkOffset1 = (short)unkRegion1Offset;
_ltHeader.unkOffset2 = (short)unkRegion2Offset;
_ltHeader.indexOffset = (short)tileIndexOffset;
_ltHeader.dataOffset = (short)imageDataOffset;
_ltHeader.unkCount1 = (short)(_unkRegion1.Length / 8);
_ltHeader.unkCount2 = (short)(_unkRegion2.Length / 3);
_ltHeader.indexCount = (short)(tileData.Length / 2);
_ltHeader.tileCount = (short)(imageData.Length / (64 * tileBitDepth / 8));
// Write header
output.Position = 0;
bw.WriteType(_ltHeader);
}
public GtxtState()
{
_img = new Gtxt();
EncodingDefinition = GtxtSupport.GetEncodingDefinition();
}
