[s3m-screamtracker] Implement Adlib instrument fine tuning value

[ildar]

$ ./gamemus /tmp/ADLIBSP.S3M -c dro-dosbox-v2:out.dro
Opening /tmp/ADLIBSP.S3M as type
File is definitely: ScreamTracker 3 Module [s3m-screamtracker]
S3M: Adlib instrument has c2spd of 8300
Error opening music file: S3M Adlib instrument has fine tuning value - these are unimplemented! Please report this problem.

[Malvineous]

Any idea how the fine tuning values work? I don't think there's much documentation about them.

[ildar]

It's probably safe to drop this info

[sagamusix]

Finetuning works exactly the same way as it does for PCM samples - Doubling the c2spd also doubles the note frequency. At 8363 Hz, you get standard A440 tuning, at 16726 Hz you get A440 tuning transposed one octave up, at 8860 Hz (8363 Hz + one semitone) you get A440 tuning one semitone transposed up, etc...

adlib+pcm freq.zip