--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/src/share/classes/com/sun/media/sound/MidiInDeviceProvider.java	Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,127 @@
+/*
+ * Copyright 1999-2007 Sun Microsystems, Inc.  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.  Sun designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ */
+
+package com.sun.media.sound;
+
+import javax.sound.midi.MidiDevice;
+import javax.sound.midi.spi.MidiDeviceProvider;
+
+
+/**
+ * MIDI input device provider.
+ *
+ * @author Kara Kytle
+ * @author Florian Bomers
+ */
+public class MidiInDeviceProvider extends AbstractMidiDeviceProvider {
+
+    /** Cache of info objects for all MIDI output devices on the system. */
+    static Info[] infos = null;
+
+    /** Cache of open MIDI input devices on the system. */
+    static MidiDevice[] devices = null;
+
+    private static boolean enabled;
+
+    // STATIC
+
+    static {
+        // initialize
+        Platform.initialize();
+        enabled = Platform.isMidiIOEnabled();
+    }
+
+    // CONSTRUCTOR
+
+    /**
+     * Required public no-arg constructor.
+     */
+    public MidiInDeviceProvider() {
+        if (Printer.trace) Printer.trace("MidiInDeviceProvider: constructor");
+    }
+
+    // implementation of abstract methods in AbstractMidiDeviceProvider
+
+    AbstractMidiDeviceProvider.Info createInfo(int index) {
+        if (!enabled) {
+            return null;
+        }
+        return new MidiInDeviceInfo(index, MidiInDeviceProvider.class);
+    }
+
+    MidiDevice createDevice(AbstractMidiDeviceProvider.Info info) {
+        if (enabled && (info instanceof MidiInDeviceInfo)) {
+            return new MidiInDevice(info);
+        }
+        return null;
+    }
+
+    int getNumDevices() {
+        if (!enabled) {
+            if (Printer.debug)Printer.debug("MidiInDevice not enabled, returning 0 devices");
+            return 0;
+        }
+        int numDevices = nGetNumDevices();
+        if (Printer.debug)Printer.debug("MidiInDeviceProvider.getNumDevices(): devices: " + numDevices);
+        return numDevices;
+    }
+
+    MidiDevice[] getDeviceCache() { return devices; }
+    void setDeviceCache(MidiDevice[] devices) { this.devices = devices; }
+    Info[] getInfoCache() { return infos; }
+    void setInfoCache(Info[] infos) { this.infos = infos; }
+
+
+    // INNER CLASSES
+
+    /**
+     * Info class for MidiInDevices.  Adds the
+     * provider's Class to keep the provider class from being
+     * unloaded.  Otherwise, at least on JDK1.1.7 and 1.1.8,
+     * the provider class can be unloaded.  Then, then the provider
+     * is next invoked, the static block is executed again and a new
+     * instance of the device object is created.  Even though the
+     * previous instance may still exist and be open / in use / etc.,
+     * the new instance will not reflect that state...
+     */
+    static class MidiInDeviceInfo extends AbstractMidiDeviceProvider.Info {
+        private Class providerClass;
+
+        private MidiInDeviceInfo(int index, Class providerClass) {
+            super(nGetName(index), nGetVendor(index), nGetDescription(index), nGetVersion(index), index);
+            this.providerClass = providerClass;
+        }
+
+    } // class MidiInDeviceInfo
+
+
+    // NATIVE METHODS
+
+    private static native int nGetNumDevices();
+    private static native String nGetName(int index);
+    private static native String nGetVendor(int index);
+    private static native String nGetDescription(int index);
+    private static native String nGetVersion(int index);
+}