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Diffstat (limited to 'backends/rtpmidi.md')
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diff --git a/backends/rtpmidi.md b/backends/rtpmidi.md index 9f56f3d..8014572 100644 --- a/backends/rtpmidi.md +++ b/backends/rtpmidi.md @@ -38,6 +38,7 @@ Common instance configuration parameters | `ssrc` | `0xDEADBEEF` | Randomly generated | 32-bit synchronization source identifier | | `mode` | `direct` | none | Instance session management mode (`direct` or `apple`) | | `peer` | `10.1.2.3 9001` | none | MIDI session peer, may be specified multiple times. Bypasses session discovery (but still performs session negotiation) | +| `epn-tx` | `short` | `full` | Configure whether to clear the active parameter number after transmitting an `nrpn` or `rpn` parameter. | `direct` mode instance configuration parameters @@ -64,6 +65,8 @@ The `rtpmidi` backend supports mapping different MIDI events to MIDIMonster chan * `aftertouch` - Channel-wide aftertouch messages * `pitch` - Channel pitchbend messages * `program` - Channel program change messages +* `rpn` - Registered parameter numbers (14-bit extension) +* `nrpn` - Non-registered parameter numbers (14-bit extension) A MIDIMonster channel is specified using the syntax `channel<channel>.<type><index>`. The shorthand `ch` may be used instead of the word `channel` (Note that `channel` here refers to the MIDI channel number). @@ -74,6 +77,9 @@ MIDI channels range from `0` to `15`. Each MIDI channel consists of 128 notes (n additionally each have a pressure control, 128 CC's (numbered likewise), a channel pressure control (also called 'channel aftertouch') and a pitch control which may all be mapped to individual MIDIMonster channels. +Every MIDI channel also provides `rpn` and `nrpn` controls, which are implemented on top of the MIDI protocol, using +the CC controls 101/100/99/98/38/6. Both control types have 14-bit IDs and 14-bit values. + Example mappings: ``` @@ -82,6 +88,7 @@ rmidi1.channel15.pressure1 > rmidi1.channel0.note0 rmidi1.ch1.aftertouch > rmidi2.ch2.cc0 rmidi1.ch0.pitch > rmidi2.ch1.pitch rmidi2.ch15.note1 > rmidi2.ch2.program +rmidi2.ch0.nrpn900 > rmidi1.ch1.rpn1 ``` #### Known bugs / problems @@ -93,6 +100,12 @@ The mDNS and DNS-SD implementations in this backend are extremely terse, to the specifications in multiple cases. Due to the complexity involved in supporting these protocols, problems arising from this will be considered a bug only in cases where they hinder normal operation of the backend. +Extended parameter numbers (EPNs, the `rpn` and `nrpn` control types) will also generate events on the controls (CC 101 through +98, 38 and 6) that are used as the lower layer transport. When using EPNs, mapping those controls is probably not useful. + +EPN control types support only the full 14-bit transfer encoding, not the shorter variant transmitting only the 7 +high-order bits. This may be changed if there is sufficient interest in the functionality. + mDNS discovery may announce flawed records when run on a host with multiple active interfaces. While this backend should be reasonably stable, there may be problematic edge cases simply due to the |