FILE FORMATS
^^^^^^^^^^^^

note: there may be inaccuracies in this document. refer to the converter
source code (see fileops.c) if unsure about anything.



komposter .ksyn synthesizer file format (iff-like but small-endian for intel)

offset	length	descr
---------------------------------------------------------
0		4	"KSYN"
4		4	size of data in bytes

--- data starts ---
0		4	number of modules stored (m)
4		4	reserved
8		128	synthesizer name (zero-terminated string)

--- module data repeated m times ---
0		4	type
4		64	label
68		4*4	inputs
84		4	x position (float)
88		4	y position (float)
92		4	active
96		4	output active
100		4	input active
104		6*4	reserved
128




patch bank chunk (KBNK) follows KSYN

offset	length	descr
---------------------------------------------------------
0		4	"KBNK"
4		4	size of data in bytes (multiple of 4)

--- data starts ---
8		4	number of patches in bank (np)
12		4	length of the signal stack (sl)

--- patch repeated np times ---
0       	128	name of the patch
128		sl*4	signal stack in module indexes
128+sl*4	sl*4	modulator values in stack order
128+sl*8	sl*4	modulator precision quantifiers




pattern data chunk (KPAT)

offset	length	descr
---------------------------------------------------------
0		4	"KPAT"
4		4	size of data in bytes

--- data starts ---
8		4	length of pattern in measures (pl)
12		pl*16*4	all 16th notes in pattern (32bits each)




sequencer data chunk (KSEQ)

offset	length	descr
---------------------------------------------------------
0		4	"KSEQ"
4		4	size of data in bytes

--- data starts ---
8		4	number of channels (ch)
12		4	song length in measures (sl)
16		4	beats per minute

20		ch*4	synthesizer assignments and flags for channels
20+ch*4		ch*sl*4	pattern numbers for channels
..		ch*sl*4	repeat counts for channels
		ch*sl*4	transpose values for channels
		ch*sl*4 pattern patch assignments for channels






song container chunk (KSNG)

0		4	"KSNG"
4		4	size of data in bytes (ds)

--- data starts ---
8		4	number of pattern chunks
12		4	number of synthesizer and patch bank chunks
16		n	nested KSEQ, KPAT, KSYN and KBNK chunks

ds-12		4	crc32 checksum of data (excluding checksum itself)




NOTES
^^^^^

- a KSNG chunk must contain one and only one KSEQ chunk.

- there must be a KBNK chunk for each KSYN chunk included. the KSYN and KBNK
  chunks are interleaved inside the file so that the KBNK applies to the KSYN
  chunk prior to it.

- patterns and synthesizers are numbered according to the order their chunks
  are stored within the KSNG chunk.

- KSNG files are stored to disk as .ksong files

- synthesizers are stored to disk as .ksyn files, which are actually composed
  of a KSYN chunk and a KBNK chunk immediately following it. when a synth is
  loaded from disk, its patch bank is loaded at the same time.

- the least significant byte of the synthesizer assignments in KSEQ is the
  synthesizer number, bits 31-8 are flags such as the restart bits.