Import Voyetra SuperSAPI! factory patches

[djtuBIG-MaliceX]

Original report by James Alan Nguyen (Bitbucket: djtubig-malicex, GitHub: djtubig-malicex).

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A target intention for demonstrating 2x2op patch support is to allow for playback with the Voyetra SuperSAPI! patches.

Current challenges:

• Per-voice panning not implemented
• Per-voice detune not implemented
• Note retrigger (to be investigated; see Telephone patch)
• Percussion bank does not use OPL Rhyhtm modes. May need to transcode them to standard patches.
• Voyetra's DOS player omits entire MIDI channels or so, to prevent excessive note-stealing from complex MIDI files. (similar to Win3.1's channel omission)

[djtuBIG-MaliceX]

Original comment by James Alan Nguyen (Bitbucket: djtubig-malicex, GitHub: djtubig-malicex).

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Discovered SAPI did not make much use of rhythm mode, and where it did, it was parameterless other than total level and pan. To be investigated.

[djtuBIG-MaliceX]

Original comment by James Alan Nguyen (Bitbucket: djtubig-malicex, GitHub: djtubig-malicex).

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Might look at using Wohlstand's format as a target base for adapting the patches into.

[djtuBIG-MaliceX]

Original comment by Wohlstand (Bitbucket: Wohlstand, GitHub: Wohlstand).

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At first, I'll need to add some fields into WOPL format the patch-level pan support and some other flags like of default software vibrato (as ADLMIDI already implements it, I can use that value as an offset from off MIDI-configured vibrato level) as for now those fields are missing yet. So, the WOPLv4 will appear to have those fields. Then I'll need full dump of SupoerSAPI! instruments, or a super-long-boring-hard way to play every instrument through DosBox and write a DRO file with them, and implement into OPL3 Bank Editor the support for instrument importing from DRO files (together with existing IMF files support).