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From: "Volker Rümelin" <vr_qemu@t-online.de>
To: Gerd Hoffmann <kraxel@redhat.com>
Cc: qemu-devel@nongnu.org
Subject: [PATCH v3 05/15] paaudio: increase default latency to 46ms
Date: Tue,  1 Mar 2022 20:13:01 +0100	[thread overview]
Message-ID: <20220301191311.26695-5-vr_qemu@t-online.de> (raw)
In-Reply-To: <3d0bd2ac-e5b9-9cf6-c98f-c047390a3ec5@t-online.de>

This is a patch to improve the pulseaudio playback experience.
Asking pulseaudio for a playback latency of 15ms is quite
demanding. Increase this to 46ms. The total playback latency
now is 31ms larger. One of the next patches will reduce the
total playback latency again by more than 46ms.

Here is a quote from the PulseAudio Latency Control
documentation: 'For the sake of (...) drop-out safety always
make sure to pick the highest latency possible that fulfills
your needs.'

Signed-off-by: Volker Rümelin <vr_qemu@t-online.de>
---
 audio/paaudio.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/audio/paaudio.c b/audio/paaudio.c
index 75401d5391..9df1e69c08 100644
--- a/audio/paaudio.c
+++ b/audio/paaudio.c
@@ -744,7 +744,7 @@ static int qpa_validate_per_direction_opts(Audiodev *dev,
 {
     if (!pdo->has_latency) {
         pdo->has_latency = true;
-        pdo->latency = 15000;
+        pdo->latency = 46440;
     }
     return 1;
 }
-- 
2.34.1



  parent reply	other threads:[~2022-03-01 19:17 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-03-01 19:11 [PATCH v3 00/15] reduce audio playback latency Volker Rümelin
2022-03-01 19:12 ` [PATCH v3 01/15] audio: replace open-coded buffer arithmetic Volker Rümelin
2022-03-02  0:12   ` Akihiko Odaki
2022-03-01 19:12 ` [PATCH v3 02/15] audio: move function audio_pcm_hw_clip_out() Volker Rümelin
2022-03-01 19:12 ` [PATCH v3 03/15] audio: add function audio_pcm_hw_conv_in() Volker Rümelin
2022-03-01 19:13 ` [PATCH v3 04/15] audio: inline function audio_pcm_sw_get_rpos_in() Volker Rümelin
2022-03-01 19:13 ` Volker Rümelin [this message]
2022-03-01 19:13 ` [PATCH v3 06/15] jackaudio: use more jack audio buffers Volker Rümelin
2022-03-02 18:11   ` Christian Schoenebeck
2022-03-02 20:51     ` Volker Rümelin
2022-03-01 19:13 ` [PATCH v3 07/15] audio: copy playback stream in sequential order Volker Rümelin
2022-03-01 19:13 ` [PATCH v3 08/15] audio: add pcm_ops function table for capture backend Volker Rümelin
2022-03-01 19:13 ` [PATCH v3 09/15] Revert "audio: fix wavcapture segfault" Volker Rümelin
2022-03-01 19:13 ` [PATCH v3 10/15] audio: restore mixing-engine playback buffer size Volker Rümelin
2022-03-02  0:13   ` Akihiko Odaki
2022-03-01 19:13 ` [PATCH v3 11/15] paaudio: reduce effective " Volker Rümelin
2022-03-01 19:13 ` [PATCH v3 12/15] dsoundaudio: " Volker Rümelin
2022-03-01 19:13 ` [PATCH v3 13/15] ossaudio: " Volker Rümelin
2022-03-01 19:13 ` [PATCH v3 14/15] paaudio: fix samples vs. frames mix-up Volker Rümelin
2022-03-01 19:13 ` [PATCH v3 15/15] sdlaudio: " Volker Rümelin

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