diff options
Diffstat (limited to 'libopna/opnafm.h')
| -rw-r--r-- | libopna/opnafm.h | 15 |
1 files changed, 12 insertions, 3 deletions
diff --git a/libopna/opnafm.h b/libopna/opnafm.h index b62556e..9da143f 100644 --- a/libopna/opnafm.h +++ b/libopna/opnafm.h @@ -44,15 +44,19 @@ struct opna_fm_slot { uint8_t keycode; + // set with opna_write + bool keyon_ext; + // synchronized with env update (once per 3 samples) bool keyon; + // set when opna_fm_slotout called + int16_t prevout; }; struct opna_fm_channel { struct opna_fm_slot slot[4]; // save 2 samples for slot 1 feedback - uint16_t fbmem1; - uint16_t fbmem2; + uint16_t fbmem; // save sample for long (>2) chain of slots uint16_t alg_mem; @@ -97,7 +101,12 @@ void opna_fm_chan_reset(struct opna_fm_channel *chan); void opna_fm_chan_phase(struct opna_fm_channel *chan); void opna_fm_chan_env(struct opna_fm_channel *chan); void opna_fm_chan_set_blkfnum(struct opna_fm_channel *chan, unsigned blk, unsigned fnum); -int16_t opna_fm_chanout(struct opna_fm_channel *chan); + +struct opna_fm_frame { + int16_t data[2]; +}; + +struct opna_fm_frame opna_fm_chanout(struct opna_fm_channel *chan); void opna_fm_slot_key(struct opna_fm_channel *chan, int slotnum, bool keyon); void opna_fm_chan_set_alg(struct opna_fm_channel *chan, unsigned alg); |