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[PATCH 18/23] paaudio: limit minreq to 75% of audio timer_rate
From: |
Volker Rümelin |
Subject: |
[PATCH 18/23] paaudio: limit minreq to 75% of audio timer_rate |
Date: |
Sun, 10 Jan 2021 11:02:34 +0100 |
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>
---
audio/paaudio.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
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;
--
2.26.2
- Re: [PATCH 03/23] sdlaudio: add -audiodev sdl, out.buffer-count option, (continued)
- [PATCH 10/23] audio: break generic buffer dependency on mixing-engine, Volker Rümelin, 2021/01/10
- [PATCH 08/23] audio: split pcm_ops function get_buffer_in, Volker Rümelin, 2021/01/10
- [PATCH 09/23] sdlaudio: add recording functions, Volker Rümelin, 2021/01/10
- [PATCH 11/23] sdlaudio: enable (in|out).mixing-engine=off, Volker Rümelin, 2021/01/10
- [PATCH 13/23] paaudio: avoid to clip samples multiple times, Volker Rümelin, 2021/01/10
- [PATCH 14/23] paaudio: wait for PA_STREAM_READY in qpa_write(), Volker Rümelin, 2021/01/10
- [PATCH 15/23] paaudio: wait until the playback stream is ready, Volker Rümelin, 2021/01/10
- [PATCH 12/23] audio: remove remaining unused plive code, Volker Rümelin, 2021/01/10
- [PATCH 16/23] paaudio: remove unneeded code, Volker Rümelin, 2021/01/10
- [PATCH 18/23] paaudio: limit minreq to 75% of audio timer_rate,
Volker Rümelin <=
- [PATCH 20/23] dsoundaudio: replace GetForegroundWindow(), Volker Rümelin, 2021/01/10
- [PATCH 17/23] paaudio: comment bugs in functions qpa_init_*, Volker Rümelin, 2021/01/10
- [PATCH 19/23] paaudio: send recorded data in smaller chunks, Volker Rümelin, 2021/01/10
- [PATCH 21/23] dsoundaudio: rename dsound_open(), Volker Rümelin, 2021/01/10
- [PATCH 22/23] dsoundaudio: enable f32 audio sample format, Volker Rümelin, 2021/01/10
- [PATCH 23/23] dsoundaudio: fix log message, Volker Rümelin, 2021/01/10
- Re: [PATCH 00/23] next round of audio patches, no-reply, 2021/01/10
- Re: [PATCH 00/23] next round of audio patches, Gerd Hoffmann, 2021/01/14