From 3cc4ee8029f9e48c618719af9df9c35c3505e201 Mon Sep 17 00:00:00 2001
From: Paul Davis <paul@linuxaudiosystems.com>
Date: Sun, 21 Feb 2016 12:44:54 -0500
Subject: alsa: allow environment variable ARDOUR_ALSA_DEVICE to identify a
 single, arbitrary ALSA PCM name as the only available/allowed device

---
 libs/ardouralsautil/devicelist.cc | 8 ++++++++
 1 file changed, 8 insertions(+)

(limited to 'libs/ardouralsautil/devicelist.cc')

diff --git a/libs/ardouralsautil/devicelist.cc b/libs/ardouralsautil/devicelist.cc
index 3fdb1401af..f642733182 100644
--- a/libs/ardouralsautil/devicelist.cc
+++ b/libs/ardouralsautil/devicelist.cc
@@ -18,6 +18,8 @@
  */
 
 #include <alsa/asoundlib.h>
+#include <glib.h>
+
 #include "pbd/convert.h"
 #include "ardouralsautil/devicelist.h"
 
@@ -34,6 +36,12 @@ ARDOUR::get_alsa_audio_device_names (std::map<std::string, std::string>& devices
 	string devname;
 	int cardnum = -1;
 	int device = -1;
+	const char* fixed_name;
+
+	if ((fixed_name = g_getenv ("ARDOUR_ALSA_DEVICE"))) {
+		devices.insert (make_pair<string,string> (fixed_name, fixed_name));
+		return;
+	}
 
 	assert (duplex > 0);
 
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