--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/java.desktop/linux/native/libjsound/PLATFORM_API_LinuxOS_ALSA_CommonUtils.h	Fri Mar 23 09:51:02 2018 +0100
@@ -0,0 +1,82 @@
+/*
+ * Copyright (c) 2003, 2007, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+#include <alsa/asoundlib.h>
+#include "Utilities.h"
+
+#ifndef PLATFORM_API_LINUXOS_ALSA_COMMONUTILS_H_INCLUDED
+#define PLATFORM_API_LINUXOS_ALSA_COMMONUTILS_H_INCLUDED
+
+#define ALSA_VERSION_PROC_FILE "/proc/asound/version"
+#define ALSA_HARDWARE "hw"
+#define ALSA_HARDWARE_CARD ALSA_HARDWARE":%d"
+#define ALSA_HARDWARE_DEVICE ALSA_HARDWARE_CARD",%d"
+#define ALSA_HARDWARE_SUBDEVICE ALSA_HARDWARE_DEVICE",%d"
+
+#define ALSA_PLUGHARDWARE "plughw"
+#define ALSA_DEFAULT_DEVICE_NAME "default"
+
+#define ALSA_DEFAULT_DEVICE_ID (0)
+
+#define ALSA_PCM     (0)
+#define ALSA_RAWMIDI (1)
+
+// for use in info objects
+#define ALSA_VENDOR "ALSA (http://www.alsa-project.org)"
+
+// Environment variable for inclusion of subdevices in device listing.
+// If this variable is unset or "no", then subdevices are ignored, and
+// it's ALSA's choice which one to use (enables hardware mixing)
+#define ENV_ENUMERATE_PCM_SUBDEVICES "ALSA_ENUMERATE_PCM_SUBDEVICES"
+
+// if defined, subdevices are listed.
+//#undef ALSA_MIDI_ENUMERATE_SUBDEVICES
+#define ALSA_MIDI_ENUMERATE_SUBDEVICES
+
+// must be called before any ALSA calls
+void initAlsaSupport();
+
+/* if true (non-zero), ALSA sub devices should be listed as separate devices
+ */
+int needEnumerateSubdevices(int isMidi);
+
+
+/*
+ * deviceID contains packed card, device and subdevice numbers
+ * each number takes 10 bits
+ * "default" device has id == ALSA_DEFAULT_DEVICE_ID
+ */
+UINT32 encodeDeviceID(int card, int device, int subdevice);
+
+void decodeDeviceID(UINT32 deviceID, int* card, int* device, int* subdevice,
+                    int isMidi);
+
+void getDeviceStringFromDeviceID(char* buffer, UINT32 deviceID,
+                                 int usePlugHw, int isMidi);
+
+void getALSAVersion(char* buffer, int len);
+
+
+#endif // PLATFORM_API_LINUXOS_ALSA_COMMONUTILS_H_INCLUDED