Moved hotplug function prototypes from random locations to new header file src/common/pa_hotplug.h. Added draft documentation and licence headers. In pa_front.c moved devices changed code next to refresh device list code.

src/os/win/pa_win_hotplug.c

@@ -1,4 +1,44 @@
+/*
+ * $Id$
+ * Portable Audio I/O Library
+ * Hotplug interface and utilities
+ * Copyright (c) 2011-2016 Robert Bielik
+ *
+ * Based on the Open Source API proposed by Ross Bencina
+ * Copyright (c) 1999-2016 Ross Bencina, Phil Burk
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files
+ * (the "Software"), to deal in the Software without restriction,
+ * including without limitation the rights to use, copy, modify, merge,
+ * publish, distribute, sublicense, and/or sell copies of the Software,
+ * and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR
+ * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
+ * CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
 
+/*
+ * The text above constitutes the entire PortAudio license; however,
+ * the PortAudio community also makes the following non-binding requests:
+ *
+ * Any person wishing to distribute modifications to the Software is
+ * requested to send the modifications to the original developer so that
+ * they can be incorporated into the canonical version. It is also
+ * requested that these non-binding requests be included along with the
+ * license above.
+ */
+
+#include "pa_hotplug.h"
 #include "pa_util.h"
 #include "pa_debugprint.h"
 #include "pa_allocation.h"
@@ -20,13 +60,6 @@
 #pragma comment( lib, "setupapi.lib" )
 #endif
 
-
-/* Implemented in pa_front.c
-  @param first  0 = unknown, 1 = insertion, 2 = removal
-  @param second Host specific device change info (in windows it is the (unicode) device path)
-*/
-extern void PaUtil_DevicesChanged(unsigned, void*);
-
 /* use CreateThread for CYGWIN/Windows Mobile, _beginthreadex for all others */
 #if !defined(__CYGWIN__) && !defined(_WIN32_WCE)
 #define CREATE_THREAD_FUNCTION (HANDLE)_beginthreadex