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ALSA: be ready for /dev/snd to not be available

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If this occurs, the system has no ALSA support in the kernel,
and it is appropriate for the backend to fail.

closes #6
This commit is contained in:
Andrew Kelley 2015-09-03 15:40:36 -07:00
parent 85c2190675
commit 918183adc6
1 changed files with 4 additions and 3 deletions
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7
src/alsa.cpp
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@ -1814,13 +1814,14 @@ int soundio_alsa_init(SoundIoPrivate *si) {
assert(err != EFAULT); assert(err != EFAULT);
assert(err != EINVAL); assert(err != EINVAL);
assert(err != ENAMETOOLONG); assert(err != ENAMETOOLONG);
assert(err != ENOENT);
destroy_alsa(si); destroy_alsa(si);
if (err == ENOSPC) { if (err == ENOSPC) {
return SoundIoErrorSystemResources; return SoundIoErrorSystemResources;
} else { } else if (err == ENOMEM) {
assert(err == ENOMEM);
return SoundIoErrorNoMem; return SoundIoErrorNoMem;
} else {
// Kernel must not have ALSA support.
return SoundIoErrorInitAudioBackend;
} }
} }