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Emscripten: increase audio buffer to unreasonable size

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Sergii Pylypenko
2021-05-04 23:04:17 +03:00
parent 316b9490b2
commit ed4272b2bb
1 changed files with 6 additions and 0 deletions
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6
src/sound/sdl2_s.cpp
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@@ -49,6 +49,12 @@ const char *SoundDriver_SDL::Start(const StringList &parm)
spec.format = AUDIO_S16SYS;
spec.channels = 2;
spec.samples = GetDriverParamInt(parm, "samples", 1024);
#ifdef __EMSCRIPTEN__
// Yes, allocate 1/3 of a second for an audiobuffer.
// Web browsers process sounds in the main thread together with video,
// and FPS of the webapp is terrible.
spec.samples = GetDriverParamInt(parm, "samples", 16384);
#endif
spec.callback = fill_sound_buffer;
SDL_AudioDeviceID dev = SDL_OpenAudioDevice(nullptr, 0, &spec, &spec_actual, SDL_AUDIO_ALLOW_FREQUENCY_CHANGE);
MxInitialize(spec_actual.freq);