Fixes#220: Render in the Signal Generator window did nothing on a time
selection over an empty part of a track. AudioSuite only processed the
clips under the selection, so with none it stopped with "select audio
clips first", and that went to the status line only.
- A generator (soundcraft_dsp::is_generator, today only the Signal
Generator) ignores its input, so it no longer needs clips. With a
time selection it renders a new clip over exactly the selection on
each selected audio track, over whatever was there, as Pro Tools'
Signal Generator does. Before, it replaced whole clips under the
selection and left the empty parts empty.
- Other tracks in the selection are skipped. With no audio track in
it, or no time selection and no clips, it reports why.
- Explicit `clips` still process those clips. Effects behave as before.
- The AudioSuite window's hint says what Render will do for a
generator.
Imported MIDI keeps its controller events: sustain pedal and other CCs,
pitch bend, channel and poly pressure, program changes. Playback sent
instruments only note-ons and note-offs, so a piano part lost its pedal
and bends went flat.
- Plugin::midi takes any other MIDI 1.0 channel message at a sample
offset. The mix engine sends each clip's controllers at their sample,
after the Real-Time Properties delay (and transpose, for poly
pressure), on channel 1 like the notes.
- After a seek, a stop or a loop wrap, an instrument first gets Reset All
Controllers (CC 121), then the last value each controller had on its
track before the playhead. A pedal held before the start point is
still down.
- CLAP: raw MIDI events when the note port speaks the MIDI dialect.
- VST3: CCs, aftertouch and pitch bend become parameter changes at their
offset, through the plugin's IMidiMapping. It is asked once in prepare,
on the main thread, and there is one point per parameter per block.
Poly pressure is a PolyPressureEvent. Program changes have no VST3
mapping and are dropped.
- AU: MusicDeviceMIDIEvent for instruments and music effects.
- The built-in synth follows the sustain pedal, pitch bend (2 semitones
each way), Reset All Controllers and All Notes Off.
- The sampler ignores the pedal, pitch bend and Reset All Controllers
for now.
The AU check of MIDI volume lives inside the existing DLS test. Creating
two DLSMusicDevice instances at once on two threads crashes inside the
unit, with or without this change. Two instances created one after
another render in parallel fine.
Workspace for SoundCraft, a clean-room pure-Rust Pro Tools-class DAW:
timebases and tempo maps, WAV/AIFF/FLAC/symphonia audio IO with peaks,
SMF and MIDI ops, 26 original DSP plugins, the session model, the mix
engine, ~180 registered commands with undo, a cpal player, and the
agent rules (AGENTS.md, ATTRIBUTION.md).
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Brandon Thomas