Automatic sequence and random opcode

[kinwie]

Most samplers have easier setup for round robin and random regions. While in standard sfz specs, it's defined in more complex way. First, for the cycle round robin, we need to put both seq_length and seq_positon, while most samplers only need to reset its position value only. Second, for the random, we need to create lorand and hirand and put a lot of division values, while other samplers can just have one click to enable the random trigger.

So, for more easier sfz instruments creation, a new simpler opcode can be made, like: seq=on which the player will cycle through the parsed regions. For random trigger, rand=on, then the player will create its own internal random counter for triggering

[kinwie]

Another behavior refinement may also be good to be implemented.
So, to make the sfz player able to play the round-robin sequence detected from the seq_position only, without the requirement of seq_length. Highest seq_position value will be the seq_length value.
And when the seq_length is present, it will take over the value set by highest seq_position.

[ghost]

Hi,
My suggestion is that seq=on and rand=on could be replaced by rr_type= with possible values being random , default round (if seq_position settings exist - same as current), and default off (if seq_position settings do not exist). This would remove the risk of putting both seq=on and rand=on and the seq_position and seq_length would not have to change. That way testing random vs round vs no robins would be as easy as changing one word.

[kinwie]

It because seq=on and rand=on can be used simultaneously in sfz, which can produce a desirable region switching IN A PROPER SFZ PLAYER. So using same opcode twice or more with different values will cause problem imo eg, the present of both rr_type=random and rr_type=round

Here's a little documentation i made about it
https://github.com/kinwie/sfztest/wiki/sfizz-part-1-seq_-and-_rand
https://redtide.github.io/sfztest/sfizz-part-1-seq_-and-_rand/

[kinwie]

When using seq=on or rand=on, we dont need to put seq_position, seq_ length, or lorand hirand anymore, which is the main purpose