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paaudio: wait for PA_STREAM_READY in qpa_write()

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Don't call pa_stream_writable_size() in qpa_write() before the
playback stream is ready. This prevents a lot of the following
pulseaudio error messages.

pulseaudio: pa_stream_writable_size failed
pulseaudio: Reason: Bad state

To reproduce start qemu with
-parallel none -device gus,audiodev=audio0
-audiodev pa,id=audio0,out.mixing-engine=off

Signed-off-by: Volker Rümelin <vr_qemu@t-online.de>
Message-id: 9315afe5-5958-c0b4-ea1e-14769511a9d5@t-online.de
Message-Id: <20210110100239.27588-14-vr_qemu@t-online.de>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This commit is contained in:
Volker Rümelin 2021-01-10 11:02:30 +01:00 committed by Gerd Hoffmann
parent bea29e9f2e
commit e270c54826
1 changed files with 6 additions and 0 deletions
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6
audio/paaudio.c
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@ -269,6 +269,11 @@ static size_t qpa_write(HWVoiceOut *hw, void *data, size_t length)
CHECK_DEAD_GOTO(c, p->stream, unlock_and_fail,
"pa_threaded_mainloop_lock failed\n");
if (pa_stream_get_state(p->stream) != PA_STREAM_READY) {
/* wait for stream to become ready */
l = 0;
goto unlock;
}
l = pa_stream_writable_size(p->stream);
@ -282,6 +287,7 @@ static size_t qpa_write(HWVoiceOut *hw, void *data, size_t length)
r = pa_stream_write(p->stream, data, l, NULL, 0LL, PA_SEEK_RELATIVE);
CHECK_SUCCESS_GOTO(c, r >= 0, unlock_and_fail, "pa_stream_write failed\n");
unlock:
pa_threaded_mainloop_unlock(c->mainloop);
return l;