protected override void OnOpen(EndianBinaryReader reader)
{
MagicNumber = Encoding.ASCII.GetString(reader.ReadBytes(4), 0, 4);
FileSize = reader.ReadUInt32();
NumberOfChunks = reader.ReadUInt32();
Unknown1 = reader.ReadUInt32();
TexChunkOffset = reader.ReadUInt32();
TextureDataOffset = reader.ReadUInt32();
reader.BaseStream.Seek(TexChunkOffset, SeekOrigin.Begin);
TexChunkTag = Encoding.ASCII.GetString(reader.ReadBytes(4), 0, 4);
TexChunkSize = reader.ReadUInt32();
TextureCount = reader.ReadUInt32();
if (TexChunkTag != "tex ")
{
throw new Exception("CTXB parsing error");
}
Textures = new CTXBTexture[TextureCount];
pixelData = new byte[TextureCount][];
for (int i = 0; i < Textures.Length; i++)
{
reader.BaseStream.Seek(TexChunkOffset + 0xC + (i * 0x24), SeekOrigin.Begin);
Textures[i] = new CTXBTexture(reader);
reader.BaseStream.Seek(TextureDataOffset + Textures[i].DataOffset, SeekOrigin.Begin);
pixelData[i] = reader.ReadBytes((int)Textures[i].DataLength);
}
}
protected override Bitmap OnGetBitmap(int imageIndex, int paletteIndex)
{
CTXBTexture texture = Textures[imageIndex];
PicaPixelFormat pixelFormat = texture.PixelFormat;
PicaDataType dataType = ((pixelFormat == PicaPixelFormat.ETC1RGB8NativeDMP || pixelFormat == PicaPixelFormat.ETC1AlphaRGB8A4NativeDMP) ? PicaDataType.UnsignedByte : texture.DataType);
ImageBinary imageBinary = new ImageBinary();
imageBinary.Width = texture.Width;
imageBinary.Height = texture.Height;
imageBinary.InputPixelFormat = N3DS.GetPixelDataFormat(dataType, pixelFormat);
imageBinary.InputEndianness = Endian.LittleEndian;
imageBinary.AddInputPixels(pixelData[imageIndex]);
return(imageBinary.GetBitmap(0, 0));
}
protected override void OnOpen(EndianBinaryReader reader)
{
/* cmb */
MagicNumber = Encoding.ASCII.GetString(reader.ReadBytes(4), 0, 4);
FileSize = reader.ReadUInt32();
Revision = reader.ReadUInt32();
Unknown0x0C = reader.ReadUInt32();
ModelName = Encoding.ASCII.GetString(reader.ReadBytes(16), 0, 16).TrimEnd('\0');
Unknown0x20 = reader.ReadUInt32();
int chunkCount = -1, texChunkIdx = -1, rawDataCount = -1, textureDataIdx = -1;
if (Revision == 0x0F || Revision == 0x0C || Revision == 0x0A)
{
chunkCount = 7;
texChunkIdx = 3;
rawDataCount = 3;
textureDataIdx = 1;
}
else if (Revision == 0x06)
{
chunkCount = 6;
texChunkIdx = 2;
rawDataCount = 2;
textureDataIdx = 1;
}
else
{
throw new Exception($"Unhandled CMB revision 0x{Revision:X2}");
}
ChunkOffsets = new uint[chunkCount];
for (int i = 0; i < ChunkOffsets.Length; i++)
{
ChunkOffsets[i] = reader.ReadUInt32();
}
RawDataOffsets = new uint[rawDataCount];
for (int i = 0; i < RawDataOffsets.Length; i++)
{
RawDataOffsets[i] = reader.ReadUInt32();
}
/* Ensure we actually have texture data, otherwise bail */
if (RawDataOffsets[textureDataIdx] == 0x00)
{
return;
}
/* tex */
uint texChunkOffset = ChunkOffsets[texChunkIdx];
uint texDataOffset = RawDataOffsets[textureDataIdx];
reader.BaseStream.Seek(texChunkOffset, SeekOrigin.Begin);
TexChunkTag = Encoding.ASCII.GetString(reader.ReadBytes(4), 0, 4);
TexChunkSize = reader.ReadUInt32();
TextureCount = reader.ReadUInt32();
if (TexChunkTag != expectedTexChunkTag)
{
throw new Exception($"Unexpected data in CMB; wanted '{expectedTexChunkTag}', got '{TexChunkTag}'");
}
Textures = new CTXBTexture[TextureCount];
pixelData = new byte[TextureCount][];
for (int i = 0; i < Textures.Length; i++)
{
reader.BaseStream.Seek(texChunkOffset + 0xC + (i * 0x24), SeekOrigin.Begin);
Textures[i] = new CTXBTexture(reader);
reader.BaseStream.Seek(texDataOffset + Textures[i].DataOffset, SeekOrigin.Begin);
pixelData[i] = reader.ReadBytes((int)Textures[i].DataLength);
}
}
