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diff --git a/portaudio/src/common/pa_types.h b/portaudio/src/common/pa_types.h
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+++ b/portaudio/src/common/pa_types.h
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+#ifndef PA_TYPES_H
+#define PA_TYPES_H
+
+/* 
+ * Portable Audio I/O Library
+ * integer type definitions
+ *
+ * Based on the Open Source API proposed by Ross Bencina
+ * Copyright (c) 1999-2006 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.
+ */
+
+/** @file
+ @ingroup common_src
+
+ @brief Definition of 16 and 32 bit integer types (PaInt16, PaInt32 etc)
+
+ SIZEOF_SHORT, SIZEOF_INT and SIZEOF_LONG are set by the configure script
+ when it is used. Otherwise we default to the common 32 bit values, if your
+ platform doesn't use configure, and doesn't use the default values below
+ you will need to explicitly define these symbols in your make file.
+
+ A PA_VALIDATE_SIZES macro is provided to assert that the values set in this
+ file are correct.
+*/
+
+#ifndef SIZEOF_SHORT
+#define SIZEOF_SHORT 2
+#endif
+
+#ifndef SIZEOF_INT
+#define SIZEOF_INT 4
+#endif
+
+#ifndef SIZEOF_LONG
+#define SIZEOF_LONG 4
+#endif
+
+
+#if SIZEOF_SHORT == 2
+typedef signed short PaInt16;
+typedef unsigned short PaUint16;
+#elif SIZEOF_INT == 2
+typedef signed int PaInt16;
+typedef unsigned int PaUint16;
+#else
+#error pa_types.h was unable to determine which type to use for 16bit integers on the target platform
+#endif
+
+#if SIZEOF_SHORT == 4
+typedef signed short PaInt32;
+typedef unsigned short PaUint32;
+#elif SIZEOF_INT == 4
+typedef signed int PaInt32;
+typedef unsigned int PaUint32;
+#elif SIZEOF_LONG == 4
+typedef signed long PaInt32;
+typedef unsigned long PaUint32;
+#else
+#error pa_types.h was unable to determine which type to use for 32bit integers on the target platform
+#endif
+
+
+/* PA_VALIDATE_TYPE_SIZES compares the size of the integer types at runtime to
+ ensure that PortAudio was configured correctly, and raises an assertion if
+ they don't match the expected values. <assert.h> must be included in the
+ context in which this macro is used.
+*/
+#define PA_VALIDATE_TYPE_SIZES \
+    { \
+        assert( "PortAudio: type sizes are not correct in pa_types.h" && sizeof( PaUint16 ) == 2 ); \
+        assert( "PortAudio: type sizes are not correct in pa_types.h" && sizeof( PaInt16 ) == 2 ); \
+        assert( "PortAudio: type sizes are not correct in pa_types.h" && sizeof( PaUint32 ) == 4 ); \
+        assert( "PortAudio: type sizes are not correct in pa_types.h" && sizeof( PaInt32 ) == 4 ); \
+    }
+
+
+#endif /* PA_TYPES_H */