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Add a hack to avoid PulseAudio on RPi

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This commit is contained in:
Cameron Gutman 2020-02-08 23:35:42 -08:00
commit fced653c1c
1 changed files with 30 additions and 0 deletions
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30
app/streaming/audio/renderers/sdlaud.cpp
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@ -4,12 +4,42 @@
#include <SDL.h> #include <SDL.h>
#include <QtGlobal> #include <QtGlobal>
#include <QFile>
#include <QTextStream>
SdlAudioRenderer::SdlAudioRenderer() SdlAudioRenderer::SdlAudioRenderer()
: m_AudioDevice(0), : m_AudioDevice(0),
m_AudioBuffer(nullptr) m_AudioBuffer(nullptr)
{ {
SDL_assert(!SDL_WasInit(SDL_INIT_AUDIO)); SDL_assert(!SDL_WasInit(SDL_INIT_AUDIO));
#ifdef HAVE_MMAL
// HACK: PulseAudio on Raspberry Pi suffers from horrible underruns,
// so switch to ALSA if we detect that we're on a Pi. We need to
// actually set a bogus PULSE_SERVER so it doesn't try to get smart on us
// and find PA anyway. SDL_AUDIODRIVER=pulseaudio can override this logic.
if (qgetenv("SDL_AUDIODRIVER").toLower() != "pulseaudio") {
QFile file("/proc/cpuinfo");
if (file.open(QIODevice::ReadOnly | QFile::Text)) {
QTextStream textStream(&file);
if (textStream.readAll().contains("Raspberry Pi")) {
SDL_LogInfo(SDL_LOG_CATEGORY_APPLICATION,
"Avoiding PulseAudio on Raspberry Pi");
qputenv("PULSE_SERVER", "");
if (SDL_InitSubSystem(SDL_INIT_AUDIO) != 0) {
SDL_LogWarn(SDL_LOG_CATEGORY_APPLICATION,
"ALSA failed; falling back to default");
qunsetenv("PULSE_SERVER");
}
else {
SDL_QuitSubSystem(SDL_INIT_AUDIO);
}
}
}
}
#endif
if (SDL_InitSubSystem(SDL_INIT_AUDIO) != 0) { if (SDL_InitSubSystem(SDL_INIT_AUDIO) != 0) {
SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, SDL_LogError(SDL_LOG_CATEGORY_APPLICATION,
"SDL_InitSubSystem(SDL_INIT_AUDIO) failed: %s", "SDL_InitSubSystem(SDL_INIT_AUDIO) failed: %s",