bclim notes

// BCLIM Format - Banner Ctr Layered(?) IMage
// Specs: Data & Footer
// Footer pointer is at the end of the file, which doubles as a pixel data length.
// Pixel data is at the start of the file.

// Footer Format:
//
// CLIM
UInt32 Magic (CLIM)
UInt16 BOM (Byte Order Marking: FF FE)
UInt32 climLength (14)
Byte TileWidth (?)(1 << ~2) 8
Byte TileHeight (?)(1 << ~2) 8
UInt32 FileSize
UInt32 Layers (?) (Haven't seen anything but 1)
//
// imag
UInt32 Magic (imag)
UInt32 imagLength (10)
UInt16 Width
UInt16 Height
UInt32 ImageFormat
//
// Image Data
UInt32 Size

/* Notes
* Dimensions are expanded so that they are divisible by 8, then trimmed, as the images use 8x8 tiles.
* Pixels are arranged into 8x8 tiles using a Z-Order curve (morton code)
* Tiles are then placed into position left to right, top to bottom.
* Some Image formats build from a square base, others do not.
* Some Image formats use different amounts of bytes per pixel.
* Every other format (unless compressed) is either 4/8/16/32bpp, straight data.
* Format 7 uses an internal pixelformat and palette, followed by color choices.
* Can be 8bpColorChoice or 4bpcc, depending on amount of colors.
* Some formats have their first color used instead as transparent.
* Most formats assume a specific pixel format, which is not specified in the file (besides the format value).
* Possible formats: http://3dbrew.org/wiki/Extended_Banner
*/