Pressing home or power twice causes apps to become slow with choppy sound

rsn8887 commented 5 years ago

Start a SDL based homebrew game as application. Ideally one with sound because it makes it easier to notice the problem.
Press home to go to the menu
Press home again to return from the menu to the app.
Observe slow fps and/or choppy/distorted sound

The same happens when pressing the power button to sleep, and pressing the power button again to wake up. Using the power button, the problem happens with applets launched via album, too.

Some apps don’t suspend when pressing the home button. They keep running and playing sounds even after pressing home (why? It is not how commercial games behave). For those apps, the problem only appears when the power button is pressed twice.

rsn8887 commented 5 years ago

Hmm in uae4all the problem does NOT occur when I enter the menu before pressing home, or turn OFF the sound. So it is definitely related to sound only.

Cpasjuste commented 5 years ago

Hi @rsn8887 , i think i fixed it by moving to audren for audio, if you want to test it: http://files.mydedibox.fr/files/Dev/nx/libSDL2.a (https://github.com/devkitPro/SDL/tree/switch-sdl2_audren). I didn't notice any side effect, but i only tested it with sdl2 wav test and pPlay.

rsn8887 commented 5 years ago

Hello @Cpasjuste, yes you fixed it! I tested it with UAE4All2, and it all works perfectly. Amazing work!

Cpasjuste commented 5 years ago

Fixed in https://github.com/devkitPro/SDL/commit/51d12c191cdc7eb2ea7acca3daaf5e714b436128

devkitPro / SDL

Pressing home or power twice causes apps to become slow with choppy sound #4