From 166d472085f9da73bd79a38120994ffee1325abf Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Cl=C3=A9ment=20Gallet?= <clement.gallet@ens-lyon.org>
Date: Fri, 19 Nov 2021 19:44:18 +0100
Subject: [PATCH] snd_pcm_recover() now supports underrun

---
 CHANGELOG.md                   |  1 +
 src/library/audio/alsa/pcm.cpp | 13 ++++++++++++-
 2 files changed, 13 insertions(+), 1 deletion(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 8a5c2916..94c558cf 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,7 @@
 * Support binding keys to mouse buttons
 * Add a toggle fast-forward hotkey
 * Implements alGetString() (#447)
+* snd_pcm_recover() now supports underrun
 
 ### Changed
 ### Fixed
diff --git a/src/library/audio/alsa/pcm.cpp b/src/library/audio/alsa/pcm.cpp
index 0b5e857f..cae51f5a 100644
--- a/src/library/audio/alsa/pcm.cpp
+++ b/src/library/audio/alsa/pcm.cpp
@@ -508,7 +508,18 @@ int snd_pcm_recover(snd_pcm_t *pcm, int err, int silent)
     }
 
     DEBUGLOGCALL(LCF_SOUND);
-    return 0;
+
+    if (err == -EPIPE) {
+        int sourceId = reinterpret_cast<intptr_t>(pcm);
+        auto source = audiocontext.getSource(sourceId);
+
+        if (source->state == AudioSource::SOURCE_UNDERRUN)
+            source->state = AudioSource::SOURCE_PREPARED;
+        
+        return 0;
+    }
+    
+    return err;
 }
 
 int snd_pcm_reset(snd_pcm_t *pcm)