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notefx support for amiga freq mode

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minjaesong
2026-05-01 17:54:17 +09:00
parent ac94a52329
commit 31e46b78ce
7 changed files with 237 additions and 75 deletions
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22
mod2taud.py
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@@ -244,11 +244,17 @@ def encode_effect(cmd: int, arg: int, ch: int = 0, row: int = 0) -> tuple:
lo = arg & 0xF
return (TOP_J, (J_SEMI_TABLE[hi] << 8) | J_SEMI_TABLE[lo], None, None)
# PT is Amiga-cycle-based by definition (the Taud Amiga-mode flag is set in
# the song table, see end of build_taud()). E/F coarse pitch-slide arguments
# are therefore stored as raw PT period units; the engine consumes them
# directly in period space. G (tone portamento) is treated as linear even
# in Amiga mode per the Taud spec, so its argument is still quantised to
# 4096-TET units. Fine slides (E1x/E2x below) likewise remain linear.
if cmd == 0x1:
return (TOP_F, round(arg * 64 / 3) & 0xFFFF, None, None)
return (TOP_F, arg & 0xFFFF, None, None)
if cmd == 0x2:
return (TOP_E, round(arg * 64 / 3) & 0xFFFF, None, None)
return (TOP_E, arg & 0xFFFF, None, None)
if cmd == 0x3:
return (TOP_G, round(arg * 64 / 3) & 0xFFFF, None, None)
@@ -304,11 +310,11 @@ def encode_effect(cmd: int, arg: int, ch: int = 0, row: int = 0) -> tuple:
# E0x = filter on/off (Amiga LED filter); no Taud equivalent.
return (TOP_NONE, 0, None, None)
if sub == 0x1:
# Fine pitch up.
return (TOP_F, 0xF000 | (round(x * 16 / 3) & 0xFFF), None, None)
# Fine pitch up — raw PT period units in Amiga mode (file is always Amiga).
return (TOP_F, 0xF000 | (x & 0xFFF), None, None)
if sub == 0x2:
# Fine pitch down.
return (TOP_E, 0xF000 | (round(x * 16 / 3) & 0xFFF), None, None)
# Fine pitch down — raw PT period units in Amiga mode.
return (TOP_E, 0xF000 | (x & 0xFFF), None, None)
if sub == 0x3:
return (TOP_S, 0x1000 | (x << 8), None, None)
if sub == 0x4:
@@ -563,9 +569,11 @@ def build_pattern(grid: list, ch_idx: int, default_pan: int,
if vol_override is not None and vol_override[0] != SEL_SET:
vprint(f" ch{ch_idx} row{r}: dropped vol slide "
f"(cell already carries explicit Cxx volume)")
elif note_triggers and last_inst > 0:
elif note_triggers and row.inst > 0:
vol_sel = SEL_SET
vol_value = inst_vols.get(last_inst, 0x3F)
elif note_triggers and last_vol is not None:
vol_sel, vol_value = SEL_SET, last_vol
elif retrigger and last_vol is not None:
vol_sel, vol_value = SEL_SET, last_vol
elif vol_override is not None: