From 5a65808b735f2126bc0a5d1a7075692228294c1b Mon Sep 17 00:00:00 2001 From: Richard Kettlewell Date: Sat, 19 Jan 2013 18:39:24 +0000 Subject: [PATCH] alsa: bump start threshold With the default (1) PulseAudio plays a little bit, runs out, and sulks. --- lib/uaudio-alsa.c | 14 ++++++++++++-- 1 file changed, 12 insertions(+), 2 deletions(-) diff --git a/lib/uaudio-alsa.c b/lib/uaudio-alsa.c index 26169b0..93c8e41 100644 --- a/lib/uaudio-alsa.c +++ b/lib/uaudio-alsa.c @@ -1,6 +1,6 @@ /* * This file is part of DisOrder. - * Copyright (C) 2009 Richard Kettlewell + * Copyright (C) 2009, 2013 Richard Kettlewell * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by @@ -105,6 +105,7 @@ static void alsa_open(void) { SND_PCM_STREAM_PLAYBACK, 0))) disorder_fatal(0, "error from snd_pcm_open: %d", err); + /* Hardware parameters */ snd_pcm_hw_params_t *hwparams; snd_pcm_hw_params_alloca(&hwparams); if((err = snd_pcm_hw_params_any(alsa_pcm, hwparams)) < 0) @@ -131,7 +132,16 @@ static void alsa_open(void) { uaudio_channels, err); if((err = snd_pcm_hw_params(alsa_pcm, hwparams)) < 0) disorder_fatal(0, "error calling snd_pcm_hw_params: %d", err); - + /* Software parameters */ + snd_pcm_sw_params_t *swparams; + snd_pcm_sw_params_alloca(&swparams); + if((err = snd_pcm_sw_params_current(alsa_pcm, swparams)) < 0) + disorder_fatal(-err, "error calling snd_pcm_sw_params_current"); + /* Bump the start threshold a bit since Pulseaudio sulks with the defaults */ + if((err = snd_pcm_sw_params_set_start_threshold(alsa_pcm, swparams, 1024)) < 0) + disorder_fatal(-err, "error calling snd_pcm_sw_params_set_start_threshold"); + if((err = snd_pcm_sw_params(alsa_pcm, swparams)) < 0) + disorder_fatal(-err, "error calling snd_pcm_sw_params"); } static void alsa_start(uaudio_callback *callback, -- 2.11.0