Over the Hedge - Hammy Goes Nuts! (USA) voice during intro is just buzzing noise

[benderscruffy]

using 0.7.3
during the intro when the squirrel says noooo it is just a buzzing sound

[Arisotura]

ugh. this is a timing renovation victim. I didn't expect that to break something sound-related, even less so to break it that badly.

not that it was perfect before...

[Arisotura]

it's a weird timing issue. it also affects NO$GBA.

setting kDataCacheTiming to 4 or more makes it go away.

have yet to investigate what other consequences this will have, tho.

[Arisotura]

so, let's see.

SPU: starting ch04 CNT=A800007F SRC=0236EA08 LEN=00001E00 (00000000+00001E00)
SPU: starting ch05 CNT=A87F007F SRC=02372618 LEN=00001E00 (00000000+00001E00)

these two channels are fed the audio for the FMV thing.

they're outputting earrape garbage.

[Arisotura]

looking at what is written to these audio buffers, I see a lot of 7FFF/8000. there isn't any sort of access conflict over the buffers themselves, they're filled by a decoder of sorts that runs in ARM9 ITCM (and seems to start at 01FFF1B8).

that particular function takes incoming 32-bit audio data and clamps it to 16-bit.

this seems to mean that an earlier decoding phase is producing garbage, probably because it's getting garbage as input.

[Arisotura]

this decoder is a steaming pile of bullshit and I don't even understand how it can work or what it's attempting to do

[Arisotura]

it's weird because it's not streaming anything from the cart, it's all loaded before the FMV is played

[ghost]

Still completely broken. I dunno who Hammy is but I'm not surprised he went nuts.