Development Status

This is the list of the currently registered opcodes. Supported ones are marked with , otherwise with . Opcodes that do not register and set a corresponding variable in the region objects are not listed, so any missing opcode here is basically completely unsupported. I try to unit-test some parts of the system but sometimes it’s quite messy to do at first, so only “manual” empirical tests are done. The classification follows the list over at https://sfzformat.com/.

Sound source

Opcode	Type	Default Value	Range	Tested
sample	/	–		Unit test
sample (generators)	/	–		Manual test
delay	float	0	0 - 100	Manual test
delay_random	float	0	0 - 100	Manual test
offset	int	0	0 - 2^32	Manual test
offset_random	int	0	0 - 2^32	Manual test
end	int	0	-1 - 2^32	Manual test
count	int	0	0 - 2^32	Manual test
loop_mode	enum	no_loop	see spec	Manual test
loop_start	int	0	0 - 2^32	Manual test
loop_end	int	0	0 - 2^32	Manual test

Instrument settings

Opcode	Type	Default Value	Range	Tested
group	int	0	0 - 2^32	Manual test
off_mode	enum	fast	fast or normal	Manual test
off_by	int	0	0 - 2^32	Manual test

Region logic: key mapping

opcode	type	default value	range	status	tested
lokey, hikey, key	int	0, 127	0 - 127		Unit test
lovel, hivel	float	0, 127			Unit test

Region logic: midi conditions

opcode	type	default value	range	tested
lochan, hichan	int	1, 16	1 - 16	Unit test
lobend, hibend	float	-8192, 8192	-8192, 8192	Unit test
loccN, hiccN	int	0, 127	0 - 127	Unit test
sw_hikey, sw_lokey	int	0, 127	0 - 127	Unit test
sw_up, sw_down	int	unset	0 - 127	Unit test
sw_last	int	unset	0 - 127	Unit test
sw_previous	int	unset	0 - 127	Unit test
sw_vel	enum	current	current or previous
sw_default	int		0 - 127	Unit test

Region logic: internal conditions

Opcode	Type	Default Value	Range	Tested
lorand, hirand	float	0, 1	0 - 1	Unit test
lochanaft, hichanaft	int	0, 127	0 - 127	Unit test
lobpm, hibpm	float	0, 500	0, 500	Unit test
seq_length	int	1	1 - 100	Unit test
seq_position	int	1	1 - 100	Unit test

Region logic: triggers

Opcode	Type	Default Value	Range	Status	Tested
on_loccN, on_hiccN	int	0, 127	0 - 127		Unit test
trigger	enum	attack	attack, release, first, legato, release_key		Unit test

Performance parameters: Pitch

Opcode	Type	Default Value	Range	Tested
pitch_keycenter	int	60 (C4)	0 - 127	Manual test
pitch_keytrack	int	100	-1200 - 1200	Manual test
pitch_veltrack	int	100	-9600 - 9600	Manual test
pitch_random	int	0	0 - 9600	Manual test
transpose	int	0	-127 - 127	Manual test
tune	int	0 cents	-100 - 100	Manual test

Performance parameters: Amplifier

Opcode	Type	Default Value	Range	Tested
pan, pan_oncc	float	0	-100 - 100	Manual test
position, position_oncc	float	0	-100 - 100	Manual test
width, width_oncc	float	100	-100 - 100	Manual test
volume, volume_oncc	float	0 dB	-144 - 6
amplitude, amplitude_oncc	float	100	0 - 100	Manual test
amp_keytrack	float	0	-100 - 100
amp_keycenter	int	60 (C4)	0 - 127	Manual test
amp_veltrack	float	0	-100 - 100	Manual test
amp_velcurve_N	float	0	0 - 1	Manual test
xfin_lokey, xfin_hikey	int	0, 0	0 - 127
xfout_lokey, xfout_hikey	int	127, 127	0 - 127
xfin_lovel, xfin_hivel	int	0, 0	0 - 127
xfout_lovel, xfout_hivel	int	127, 127	0 - 127
xf_keycurve	enum	power	power, gain
xf_velcurve	enum	power	power, gain

Modulation: Envelope generators

Opcode	Type	Default Value	Range	Tested
ampeg_hold, ampeg_hold_oncc	float	0 s	0 - 100	Manual test
ampeg_delay, ampeg_delay_oncc	float	0 s	0 - 100	Manual test
ampeg_decay, ampeg_decay_oncc	float	0 s	0 - 100	Manual test
ampeg_sustain, ampeg_sustain_oncc	float	100 %	0 - 100	Manual test
ampeg_release, ampeg_release_oncc	float	0 s	0 - 100	Manual test
ampeg_attack, ampeg_attack_oncc	float	0 s	0 - 100	Manual test
ampeg_start, ampeg_start_oncc	float	0 %	0 - 100	Manual test
ampeg_vel2attack	float	0%	0 - 100
ampeg_vel2decay	float	0%	0 - 100
ampeg_vel2delay	float	0%	0 - 100
ampeg_vel2hold	float	0%	0 - 100
ampeg_vel2release	float	0%	0 - 100
ampeg_vel2sustain	float	0%	0 - 100
ampeg_vel2depth	float	0%	0 - 100

Other capabilities

#define handling
#include handling
Audio formats: WAV, FLAC and Ogg