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Android: Use OpenSL ES for audio on TVs, add audio API and MMAP settings

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An Android 11 TV played nothing over a Bluetooth headset since the switch
to Oboe, while its speakers worked. Testing on it showed AAudio with MMAP
is silent there and AAudio without MMAP works, as does OpenSL ES (also
when the headset is connected mid-game), whatever the stream usage. MMAP
should never be used for a Bluetooth route, so it's a firmware bug.

Audio settings get an Audio API choice and a Low-latency audio (MMAP)
checkbox, with hints, so other devices with the same kind of bug can be
worked around. The API defaults to OpenSL ES on TVs and before Android
8.1, where the choice isn't offered, and AAudio elsewhere. Changing them
reopens the streams right away. System Information shows the output
stream that got opened (API, MMAP or not, rate, buffers, device) and any
audio error.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
This commit is contained in:
Henrik RydgårdandClaude Opus 5.5 committed 2026-10-24 23:58:42 +02:00
1 parent b438655479
commit a5c90b61df
8 files changed
+129 -12
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UI/GameSettingsScreen.cpp
+17
View File
@@ -792,6 +792,23 @@ void GameSettingsScreen::CreateAudioSettings(UI::ViewGroup *audioSettings) {
#if PPSSPP_PLATFORM(ANDROID)
CheckBox *extraAudio = audioBackendSettings->Add(new CheckBox(&g_Config.bExtraAudioBuffering, a->T("AudioBufferingForBluetooth", "Bluetooth-friendly buffer (slower)")));
auto restartAudio = [](UI::EventParams &) {
AndroidAudio_Restart(g_audioState);
};
// AAudio isn't stable before Android 8.1, so there it's always OpenSL ES.
if (System_GetPropertyInt(SYSPROP_SYSTEMVERSION) >= 27) {
static const char *audioApis[] = { "AAudio", "OpenSL ES" };
PopupMultiChoice *audioApi = audioBackendSettings->Add(new PopupMultiChoice(&g_Config.iAndroidAudioApi, a->T("Audio API"), audioApis, 0, ARRAY_SIZE(audioApis), I18NCat::AUDIO, screenManager()));
audioApi->OnChoice.Add(restartAudio);
audioBackendSettings->Add(new SettingHint(a->T("AudioApiHint", "Try the other one if you have no sound or other audio problems."), audioApi));
CheckBox *mmap = audioBackendSettings->Add(new CheckBox(&g_Config.bAndroidAudioMMap, a->T("Low-latency audio (MMAP)")));
mmap->OnClick.Add(restartAudio);
mmap->SetEnabledFunc([]() {
return g_Config.iAndroidAudioApi == (int)AndroidAudioApi::AAUDIO;
});
audioBackendSettings->Add(new SettingHint(a->T("AudioMMapHint", "Lowest audio delay. On some devices, it causes silence over Bluetooth or other connected audio devices. Turn it off if you get no sound."), mmap));
}
// Show Oboe debug info
const std::string audioErrorStr = AndroidAudio_GetErrorString(g_audioState);
if (!audioErrorStr.empty()) {