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audio: fix SIGSEGV in AUD_get_buffer_size_out()

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As far as the emulated audio devices are concerned the pointer
returned by AUD_open_out() is an opaque handle. This includes
the NULL pointer. In this case, AUD_get_buffer_size_out() should
return a sensible buffer size instead of triggering a segmentation
fault. All other public AUD_*_out() and audio_*_out() functions
handle this case.

Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Volker Rümelin <vr_qemu@t-online.de>
Message-Id: <20250515054429.7385-2-vr_qemu@t-online.de>
This commit is contained in:
Volker Rümelin 2025-05-15 07:44:24 +02:00 • committed by Marc-André Lureau
parent 9e9542a177
commit 5ddd6c8dc8
1 changed files with 4 additions and 0 deletions
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4
audio/audio.c
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@ -905,6 +905,10 @@ size_t AUD_read(SWVoiceIn *sw, void *buf, size_t size)
int AUD_get_buffer_size_out(SWVoiceOut *sw)
{
if (!sw) {
return 0;
}
return sw->hw->samples * sw->hw->info.bytes_per_frame;
}