commit 440c29a48baee8e864752653f5cca6ea842cfd1e
from: Omar Polo <op@omarpolo.com>
date: Fri May 12 21:49:16 2023 UTC

alsa: handle xrun due to pausing

amused implements pausing as not sending audio at all until resuming,
i.e. by doing an underrun.  ALSA is more strict than sndio, by
default at least, and so we need to call snd_pcm_recover() before
we can play again.

commit - e89b829ac8e30fd8c5ff9dca70a52aeadecfff04
commit + 440c29a48baee8e864752653f5cca6ea842cfd1e
blob - fe6c8acb9722c865545c5a6e0950f4ae2b0905b5
blob + 768c7c7b80ed2fcbb6b05e4bcc63d5fd23729c73
--- audio_alsa.c
+++ audio_alsa.c
@@ -126,7 +126,8 @@ audio_write(const void *buf, size_t len)
 	avail = snd_pcm_avail_update(pcm);
 	if (avail < 0) {
 		if (avail == -EPIPE) {
-			log_warnx("alsa xrun occurred");
+			log_debug("alsa xrun occurred");
+			snd_pcm_recover(pcm, -EPIPE, 1);
 			return 0;
 		}
 		log_warnx("snd_pcm_avail_update failure: %s",