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Samples

Sample voices are channels 1–8. Logic concentrates in toern_sample.ino and browser helpers in toern_helpers.ino.

Responsibilities​

  • Browse folders/files on the SD card (combined list / manifest hooks)
  • Preview a WAV without committing it
  • Load into a channel’s playback buffer / resampler
  • Trim start/end (GLOB.seek, GLOB.seekEnd, …)
  • Reverse / direction handling
  • Samplepack 0: per-voice custom paths (SMP.samplePathRel, SMP.sp0Active)
  • Record paths feeding the same sample machinery

Audio-safe SD I/O​

Long SD reads must not starve the Audio library. The sample module exposes:

  • sdIoBeginAudioSafe() / sdIoEndAudioSafe()
  • sdIoYield()
  • channel reload busy flags (beginChannelSampleReload / endChannelSampleReload)

Call these around blocking file work when audio should keep playing.

Players​

AudioPlayArrayResmp instances (sound0…sound8 in audioinit.h) play from memory with rate control via the custom resampler. Channel 0 is used for preview / utility paths; performance voices are 1–8.

UI modes​

  • SET_WAV — browser / assign
  • RECORD_MODE — capture into a slot
  • SET_SAMPLEPACK — pack selection

Drawing for waveforms/peaks lives with UI helpers (showWave, peak scan functions in toern_sample.ino).