From 447300101db021c5ef2e67549ed5879fc7a6b9bc Mon Sep 17 00:00:00 2001
From: Tatsuyuki Ishi <ishitatsuyuki@gmail.com>
Date: Sun, 7 Jul 2019 12:45:41 +0900
Subject: [PATCH] Small tweak for ALSA underruns

The hardcoded errno was replaced by a constant, and `snd_pcm_prepare` was replaced by `snd_pcm_recover` per best practice (the underlying implementation seems same for now, though).
---
 src/host/alsa/mod.rs | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/host/alsa/mod.rs b/src/host/alsa/mod.rs
index 8ab4c81..ac68914 100644
--- a/src/host/alsa/mod.rs
+++ b/src/host/alsa/mod.rs
@@ -712,10 +712,10 @@ impl EventLoop {
                                     available_frames as alsa::snd_pcm_uframes_t,
                                 );
 
-                                if result == -32 {
+                                if result as i32 == -libc::EPIPE {
                                     // buffer underrun
                                     // TODO: Notify the user of this.
-                                    alsa::snd_pcm_prepare(stream.channel);
+                                    alsa::snd_pcm_recover(stream.channel, result as i32, 0);
                                 } else if let Err(err) = check_errors(result as _) {
                                     let description = format!("`snd_pcm_writei` failed: {}", err);
                                     let err = BackendSpecificError { description };