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bsnes/higan/ws/apu/channel2.cpp

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Update to v097r25 release. byuu says: Changelog: - WS: added HblankTimer and VblankTimer IRQs; although they don't appear to have any effect on any games that use them :/ - WS: added sound emulation; works perfectly in some games (eg Riviera); is completely silent in most games (eg GunPey) The sound emulation only partially supports the hypervoice (headphone only) channel. I need to implement the SDMA before it'll actually do anything useful. I'm a bit confused about how exactly things work. It looks like the speaker volume shift and clamp only applies to speaker mode and not headphone mode, which is very weird. Then there's the software possibility of muting the headphones and/or the speaker. Preferably, I want to leave the emulator always in headphone mode for the extra audio channel. If there are games that force-mute the headphones, but not speakers, then I may need to force headphones back on but with the hypervoice channel disabled. I guess we'll see how things go. Rough guess is probably that the channels default to enabled after the IPLROM, and games aren't bothering to manually enable them or something.
2016-03-14 11:03:32 +00:00
auto APU::Channel2::run() -> void {
Update to v097r26 release. byuu says: Changelog: - WS: fixed 8-bit sign-extended imul (fixes Star Hearts completely, Final Fantasy world map) - WS: fixed rcl/rcr carry shifting (fixes Crazy Climber, others) - WS: added sound DMA emulation (Star Hearts rain sound for one example) - WS: added OAM caching, but it's forced every line for now because otherwise there are too many sprite glitches - WS: use headphoneEnable bit instead of speakerEnable bit (fixes muted audio in games) - WS: various code cleanups (I/O mapping, audio channel naming, etc) The hypervoice channel doesn't sound all that great just yet. But I'm not sure how it's supposed to sound. I need a better example of some more complex music. What's left are some unknown register status bits (especially in the sound area), keypad interrupts, RTC emulation, CPU prefetch emulation. And then it's all just bugs. Lots and lots of bugs that need to be fixed. EDIT: oops, bad typo in the code. ws/ppu/ppu.cpp line 20: change range(256) to range(224). Also, delete the r.speed stuff from channel5.cpp to make the rain sound a lot better in Star Hearts. Apparently that's outdated and not what the bits really do.
2016-03-17 11:28:15 +00:00
if(r.voice) {
uint8 volume = r.volumeLeft << 4 | r.volumeRight << 0;
o.left = r.voiceEnableLeft ? volume : (uint8)0;
o.right = r.voiceEnableRight ? volume : (uint8)0;
} else if(--s.period == r.pitch) {
Update to v097r25 release. byuu says: Changelog: - WS: added HblankTimer and VblankTimer IRQs; although they don't appear to have any effect on any games that use them :/ - WS: added sound emulation; works perfectly in some games (eg Riviera); is completely silent in most games (eg GunPey) The sound emulation only partially supports the hypervoice (headphone only) channel. I need to implement the SDMA before it'll actually do anything useful. I'm a bit confused about how exactly things work. It looks like the speaker volume shift and clamp only applies to speaker mode and not headphone mode, which is very weird. Then there's the software possibility of muting the headphones and/or the speaker. Preferably, I want to leave the emulator always in headphone mode for the extra audio channel. If there are games that force-mute the headphones, but not speakers, then I may need to force headphones back on but with the hypervoice channel disabled. I guess we'll see how things go. Rough guess is probably that the channels default to enabled after the IPLROM, and games aren't bothering to manually enable them or something.
2016-03-14 11:03:32 +00:00
s.period = 0;
Update to v097r26 release. byuu says: Changelog: - WS: fixed 8-bit sign-extended imul (fixes Star Hearts completely, Final Fantasy world map) - WS: fixed rcl/rcr carry shifting (fixes Crazy Climber, others) - WS: added sound DMA emulation (Star Hearts rain sound for one example) - WS: added OAM caching, but it's forced every line for now because otherwise there are too many sprite glitches - WS: use headphoneEnable bit instead of speakerEnable bit (fixes muted audio in games) - WS: various code cleanups (I/O mapping, audio channel naming, etc) The hypervoice channel doesn't sound all that great just yet. But I'm not sure how it's supposed to sound. I need a better example of some more complex music. What's left are some unknown register status bits (especially in the sound area), keypad interrupts, RTC emulation, CPU prefetch emulation. And then it's all just bugs. Lots and lots of bugs that need to be fixed. EDIT: oops, bad typo in the code. ws/ppu/ppu.cpp line 20: change range(256) to range(224). Also, delete the r.speed stuff from channel5.cpp to make the rain sound a lot better in Star Hearts. Apparently that's outdated and not what the bits really do.
2016-03-17 11:28:15 +00:00
auto output = apu.sample(2, s.sampleOffset++);
Update to v097r25 release. byuu says: Changelog: - WS: added HblankTimer and VblankTimer IRQs; although they don't appear to have any effect on any games that use them :/ - WS: added sound emulation; works perfectly in some games (eg Riviera); is completely silent in most games (eg GunPey) The sound emulation only partially supports the hypervoice (headphone only) channel. I need to implement the SDMA before it'll actually do anything useful. I'm a bit confused about how exactly things work. It looks like the speaker volume shift and clamp only applies to speaker mode and not headphone mode, which is very weird. Then there's the software possibility of muting the headphones and/or the speaker. Preferably, I want to leave the emulator always in headphone mode for the extra audio channel. If there are games that force-mute the headphones, but not speakers, then I may need to force headphones back on but with the hypervoice channel disabled. I guess we'll see how things go. Rough guess is probably that the channels default to enabled after the IPLROM, and games aren't bothering to manually enable them or something.
2016-03-14 11:03:32 +00:00
o.left = output * r.volumeLeft;
o.right = output * r.volumeRight;
}
}