Parsing FSC Files

FL Studio can export a project as 'Project Bones'. Among other things, this includes 'score' files with the '.fsc' extension (fruity score?). Here is what I have found out about the file format.

Channel Rack

Using the graph editor, I left the first note alone, set all values on the second note to their minimums, and all values on the third note to their maximums. (Except for shift)

Binary contents of 'Pattern 1 - Kick.fsc':

46 4c 68 64 06 00 00 00 10 00 04 00 60 00 46 4c
64 74 63 00 00 00 c7 0b 32 30 2e 31 2e 31 2e 37
39 35 00 9f 1b 03 00 00 1c 02 25 01 41 00 00 e0
48 00 00 00 00 00 40 00 00 00 00 00 00 3c 00 00
00 78 00 40 00 40 64 80 80 60 00 00 00 00 40 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 c0 00 00 00 00 40 00 00 00 00 00 00 83 00 00
00 f0 00 80 00 80 80 ff ff

Key: file header, data header, first note, second note, third note

Hex	Text	Meaning
46 4c 68 64	FLhd	Start of file header

Hex	Decimal	Meaning
06 00 00 00	6	Number of words to follow in header
10 00	16	???
04 00	4	Number of channels in channel rack, even though this file contains just one
60 00	96	Timebase as set in Project General Settings

Hex	Text	Meaning
46 4c 64 74	FLdt	Start of data header

Hex	Decimal	Meaning
63 00 00 00	99	Number of words to follow in data chunk
c7 0b	?	?

Hex	Text	Meaning
32 30 2e 31 2e 31 2e 37 39 35 00	20.1.1.795	FL version as null terminated string

Hex	Decimal	Meaning
9f 1b 03 00 00 1c 02 25 01 41 00 00 e0	?	?
48	72	Variable width number of words to follow as "note events". Each note event has 24 words. 3x24 = 72. I don't know why this is variable width while the preceding number of words in the data header seems to be fixed width. Details on variable width numbers can be found here.

Time:

Hex	Decimal
00 00 00 00	0
60 00 00 00	96
c0 00 00 00	192

This project has 4 quarter notes, each divided into 4 sixteenth notes, that can each be shifted forward 23 times (24 possible values including 0). 4x4x24 = 96 ticks per quarter note. I think this is what timebase refers to. I'm not sure how many words this value can use. 4 is my initial guess.

???:

Hex	Decimal
00 40 00 00	?
00 40 00 00	?
00 40 00 00	?

Note Duration (If using Piano Roll):

Hex	Decimal
00 00 00 00	0
00 00 00 00	0
00 00 00 00	0

* For example, see below

Pitch:

Hex	Decimal	FL Meaning
3c	60	C-5
00	0	C-0
83	131	B-10

As placed on an 11 octave piano keyboard.

???:

Hex	Decimal
00 00 00	0
00 00 00	0
00 00 00	0

Fine Pitch Adjustment:

Hex	Decimal	FL Meaning
78	120	0
00	0	-1200 cents
f0	240	1200 cents

Increments of 10.

???:

Hex	Decimal
00	0
00	0
00	0

Release Velocity:

Hex	Decimal	FL Meaning
40	64	50
00	0	0
80	128	100

???:

Hex	Decimal
00	0
00	0
00	0

Pan:

Hex	Decimal	FL Meaning
40	64	-100 (full left)
00	0	0 (centered)
80	128	100 (full right)

Velocity:

Hex	Decimal	FL Meaning
64	100	78
00	0	0
80	128	100

Hex	Decimal	FL Meaning
80	128	0
0	0	-100
ff	255	100

Hex	Decimal	FL Meaning
80	128	0
0	0	-100
ff	255	100

----------------------------------------

In the Piano Roll, notes can have a duration value.

These two score files are almost identical:

Pattern 1 - Kick 1.fsc
46 4c 68 64 06 00 00 00 10 00 02 00 60 00 46 4c
64 74 34 00 00 00 c7 0c 32 30 2e 39 2e 30 2e 32
37 34 38 00 9f bc 0a 00 00 1c 01 25 01 41 00 00
e0 18 60 00 00 00 00 40 00 00 00 00 00 00 3c 00
00 00 78 00 40 00 40 64 80 80

Pattern 1 - Kick 2.fsc
46 4c 68 64 06 00 00 00 10 00 02 00 60 00 46 4c
64 74 34 00 00 00 c7 0c 32 30 2e 39 2e 30 2e 32
37 34 38 00 9f bc 0a 00 00 1c 01 25 01 41 00 00
e0 18 60 00 00 00 00 40 00 00 a8 00 00 00 3c 00
00 00 78 00 40 00 40 64 80 80

0xa8 == 168 == 1 3/4 beats * 96 ticks per beat