input/alsa: call snd_pcm_start() after snd_pcm_prepare()

This is necessary because we'll never get woken up again by epoll_wait() after a buffer overrun recovery, unless we start the PCM explicitly before returning to the I/O loop.

input/alsa: call snd_pcm_start() after snd_pcm_prepare()
92684112 · Max Kellermann · ef114ee6 · 92684112
Commit 92684112 authored Jan 14, 2017 by Max Kellermann
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AlsaInputPlugin.cxx src/input/plugins/AlsaInputPlugin.cxx +2 -0

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--- a/src/input/plugins/AlsaInputPlugin.cxx
+++ b/src/input/plugins/AlsaInputPlugin.cxx
@@ -267,6 +267,8 @@ AlsaInputStream::Recover(int err)
 	case SND_PCM_STATE_SETUP:
 	case SND_PCM_STATE_XRUN:
 		err = snd_pcm_prepare(capture_handle);
+		if (err == 0)
+			err = snd_pcm_start(capture_handle);
 		break;

 	case SND_PCM_STATE_DISCONNECTED: