diff options
| author | Volker Rümelin | 2021-01-10 11:02:34 +0100 |
|---|---|---|
| committer | Gerd Hoffmann | 2021-01-15 11:25:22 +0100 |
| commit | 00413ed9c2fff416b3c1ee94b2e968e9c564c7bd (patch) | |
| tree | 507823945827fa1967ed74b4351fcd3daa4372bd | |
| parent | paaudio: comment bugs in functions qpa_init_* (diff) | |
| download | qemu-00413ed9c2fff416b3c1ee94b2e968e9c564c7bd.tar.gz qemu-00413ed9c2fff416b3c1ee94b2e968e9c564c7bd.tar.xz qemu-00413ed9c2fff416b3c1ee94b2e968e9c564c7bd.zip | |
paaudio: limit minreq to 75% of audio timer_rate
Currently with the playback buffer attribute minreq = -1 and flag
PA_STREAM_EARLY_REQUESTS PulseAudio uses minreq = tlength / 4.
To improve audio playback with larger PulseAudio server side
buffers, limit minreq to a maximum of 75% of audio timer_rate.
That way there is a good chance qemu receives a stream buffer
size update before it tries to write data to the playback stream.
Signed-off-by: Volker Rümelin <vr_qemu@t-online.de>
Message-id: 9315afe5-5958-c0b4-ea1e-14769511a9d5@t-online.de
Message-Id: <20210110100239.27588-18-vr_qemu@t-online.de>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
| -rw-r--r-- | audio/paaudio.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/audio/paaudio.c b/audio/paaudio.c index ff3dd01c96..3186868294 100644 --- a/audio/paaudio.c +++ b/audio/paaudio.c @@ -517,7 +517,8 @@ static int qpa_init_out(HWVoiceOut *hw, struct audsettings *as, ss.rate = as->freq; ba.tlength = pa_usec_to_bytes(ppdo->latency, &ss); - ba.minreq = -1; + ba.minreq = pa_usec_to_bytes(MIN(ppdo->latency >> 2, + (g->dev->timer_period >> 2) * 3), &ss); ba.maxlength = -1; ba.prebuf = -1; |