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compound system flattening, part 1

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as of now compound systems (Genesis and Arcade) are translated to
separate chips.

this improves audio quality and makes things easier.

it also allows you to change the volume of each chip on a Genesis.

also adds SegaPCM system with 16 channels!
This commit is contained in:
tildearrow 2022-02-23 02:52:30 -05:00
parent a7ecb4ecdb
commit e4b9a6d1d9
13 changed files with 641 additions and 286 deletions
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4
src/engine/engine.cpp
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@ -1023,11 +1023,11 @@ int DivEngine::getEffectiveSampleRate(int rate) {
switch (song.system[0]) {
case DIV_SYSTEM_YMU759:
return 8000;
case DIV_SYSTEM_GENESIS: case DIV_SYSTEM_GENESIS_EXT:
case DIV_SYSTEM_YM2612: case DIV_SYSTEM_YM2612_EXT:
return 1278409/(1280000/rate);
case DIV_SYSTEM_PCE:
return 1789773/(1789773/rate);
case DIV_SYSTEM_ARCADE:
case DIV_SYSTEM_SEGAPCM: case DIV_SYSTEM_SEGAPCM_COMPAT:
return (31250*MIN(255,(rate*255/31250)))/255;
case DIV_SYSTEM_YM2610: case DIV_SYSTEM_YM2610_EXT: case DIV_SYSTEM_YM2610_FULL: case DIV_SYSTEM_YM2610_FULL_EXT:
return 18518;