SM64DS BTP (BMD Texture Sequence Animation) format

Fiachra
2014/03/17

Starts with 36 byte header

0x00	2	Number of frames
0x02	2	Number of textures
0x04	4	Address of Texture Headers start
0x08	2	Number of palettes
0x0A	2	Zero-padding
0x0C	4	Address of Palette Headers start
0x10	4	Address of "Frames Changes" section
0x14	4	Address of Texture ID's used in 'Start Frames', series of ushorts
0x18	4	Address of Palette ID's used in 'Start Frames', series of ushorts
0x1C	2	Number of materials
0x1E	2	Zero-padding
0x20	4	Address of Material Headers start

Data

8 byte Texture headers
	0x00	2	FFFF
	0x02	2	zero
	0x04	4	address of null-terminated texture name

8 byte Palette headers
	0x00	2	FFFF
	0x02	2	zero
	0x04	4	Address of null-terminated palette name
	
Frame Changes
	List of frame numbers at which the next texture is to be shown, 
	frame numbers start at zero, 
	list contains frame changes for all materials, number of frame changes 
	for a particular material given in (Material header + 0x08)
	series of ushorts
	
	For eg. 00 00 02 00 03 00 would be 4 frames, with the first frame lasting two frames in duration

Texture ID's
	List of the texture ID's to be used in each 'texture change', 
	ID's are the (zero-based) index of the textures referenced by name in this BTP file - 
	not the texture ID's from the BMD model, 
	list contains frame changes for all materials, number of frame changes 
	for a particular material given in (Material header + 0x08)
	series of ushorts

Palette ID's
	List of the palette ID's to be used in each 'texture change', 
	ID's are the (zero-based) index of the palettes referenced by name in this BTP file - 
	not the palette ID's from the BMD model, 
	list contains frame changes for all materials, number of frame changes 
	for a particular material given in (Material header + 0x08)
	series of ushorts

12 byte Material headers
	0x00	2	FFFF
	0x02	2	zero
	0x04	4	Address of the null-terminated material name
	0x08	2	Number of frame changes for this material
	0x0A	2	Frame changes start offset