USB: beginning to add back initial references

3rdparty/libsamplerate/AUTHORS

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+Erik de Castro Lopo <erikd@mega-nerd.com>

3rdparty/libsamplerate/COPYING

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+Copyright (c) 2012-2016, Erik de Castro Lopo <erikd@mega-nerd.com>
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+1. Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+
+2. Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
+TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

3rdparty/libsamplerate/NEWS

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+Version 0.1.9 (2016-09-23)
+  * Relicense under 2 clause BSD license.
+  * Minor bug fixes and upates.
+
+Version 0.1.8 (2011-08-15)
+  * Minor bug fixes and upates.
+
+Version 0.1.7 (2009-02-14)
+  * Fix a segfault which occurs when memcpy is passed a bad length parameter.
+  * Fix compilation under MSVC.
+
+Version 0.1.6 (2009-01-27)
+  * Minor bug fix in test suite (account for rounding error on x86_64).
+
+Version 0.1.5 (2009-01-11)
+  * Optimisation resulting dramatic throughput improvements.
+
+Version 0.1.4 (2008-07-02)
+  * Fix bug which causes a segfault with extremely low conversion ratios.
+
+Version 0.1.3 (2008-03-23)
+  * Huge improvement to the quality of conversion with the
+    SRC_SINC_MEDIUM_QUALITY and SRC_SINC_BEST_QUALITY converters.
+  * Minor bug fixes.
+
+Version 0.1.2 (2004-09-12)
+  * Fixed where callback based API wasn't being reset properly.
+  * Minor bug fixes.
+
+Version 0.1.1 (2004-07-17)
+  * Fixed bug in callback based API.
+  * Fixed a bug brought to light by aggressive optimisations of gcc-3.4.
+  * Minor bug fixes.
+
+Version 0.1.0 (2004-03-14)
+  * Added callback based API.
+  * Added a pair of functions for doing short to float and float to short
+    conversions on an arrays of data.
+  * Many minor bug fixes.
+

3rdparty/libsamplerate/README

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+This is libsamplerate, 0.1.9
+
+libsamplerate (also known as Secret Rabbit Code) is a library for
+perfroming sample rate conversion of audio data.
+
+The src/ directory contains the source code for library itself.
+
+The doc/ directory contains the libsamplerate documentation.
+
+The examples/ directory contains examples of how to write code using
+libsamplerate.
+
+The tests/ directory contains programs which link against
+libsamplerate and test its functionality.
+
+The Win32/ directory contains files and documentation to allow
+libsamplerate to compile under Win32 with the Microsoft Visual C++
+compiler.
+
+Win32
+-----
+There are detailed instructions for building libsamplerate on Win32
+in the file
+
+	doc/win32.html
+
+
+MacOSX
+------
+Building on MacOSX should be the same as building it on any other
+Unix.
+
+
+OTHER PLATFORMS
+---------------
+To compile libsamplerate on platforms which have a Bourne Shell compatible
+shell, an ANSI C compiler and a make utility should require no more that
+the following three commands :
+		./configure
+		make
+		make install
+
+CONTACTS
+--------
+
+libsamplerate was written by Erik de Castro Lopo (erikd AT mega-nerd DOT com).
+The libsamplerate home page is at :
+
+	http://www.mega-nerd.com/libsamplerate/
+

3rdparty/libsamplerate/common.h

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+/*
+** Copyright (c) 2002-2016, Erik de Castro Lopo <erikd@mega-nerd.com>
+** All rights reserved.
+**
+** This code is released under 2-clause BSD license. Please see the
+** file at : https://github.com/erikd/libsamplerate/blob/master/COPYING
+*/
+
+#ifndef COMMON_H_INCLUDED
+#define COMMON_H_INCLUDED
+
+#ifdef HAVE_STDINT_H
+#include <stdint.h>
+#elif (SIZEOF_INT == 4)
+typedef	int		int32_t ;
+#elif (SIZEOF_LONG == 4)
+typedef	long	int32_t ;
+#endif
+
+#define	SRC_MAX_RATIO			256
+#define	SRC_MAX_RATIO_STR		"256"
+
+#define	SRC_MIN_RATIO_DIFF		(1e-20)
+
+#define	MAX(a,b)	(((a) > (b)) ? (a) : (b))
+#define	MIN(a,b)	(((a) < (b)) ? (a) : (b))
+
+#define	ARRAY_LEN(x)			((int) (sizeof (x) / sizeof ((x) [0])))
+#define OFFSETOF(type,member)	((int) (&((type*) 0)->member))
+
+#define	MAKE_MAGIC(a,b,c,d,e,f)	((a) + ((b) << 4) + ((c) << 8) + ((d) << 12) + ((e) << 16) + ((f) << 20))
+
+/*
+** Inspiration : http://sourcefrog.net/weblog/software/languages/C/unused.html
+*/
+#ifdef UNUSED
+#elif defined (__GNUC__)
+#	define UNUSED(x) UNUSED_ ## x __attribute__ ((unused))
+#elif defined (__LCLINT__)
+#	define UNUSED(x) /*@unused@*/ x
+#else
+#	define UNUSED(x) x
+#endif
+
+#ifdef __GNUC__
+#	define WARN_UNUSED	__attribute__ ((warn_unused_result))
+#else
+#	define WARN_UNUSED
+#endif
+
+
+#include "samplerate.h"
+
+enum
+{	SRC_FALSE	= 0,
+	SRC_TRUE	= 1,
+
+	SRC_MODE_PROCESS	= 555,
+	SRC_MODE_CALLBACK	= 556
+} ;
+
+enum
+{	SRC_ERR_NO_ERROR = 0,
+
+	SRC_ERR_MALLOC_FAILED,
+	SRC_ERR_BAD_STATE,
+	SRC_ERR_BAD_DATA,
+	SRC_ERR_BAD_DATA_PTR,
+	SRC_ERR_NO_PRIVATE,
+	SRC_ERR_BAD_SRC_RATIO,
+	SRC_ERR_BAD_PROC_PTR,
+	SRC_ERR_SHIFT_BITS,
+	SRC_ERR_FILTER_LEN,
+	SRC_ERR_BAD_CONVERTER,
+	SRC_ERR_BAD_CHANNEL_COUNT,
+	SRC_ERR_SINC_BAD_BUFFER_LEN,
+	SRC_ERR_SIZE_INCOMPATIBILITY,
+	SRC_ERR_BAD_PRIV_PTR,
+	SRC_ERR_BAD_SINC_STATE,
+	SRC_ERR_DATA_OVERLAP,
+	SRC_ERR_BAD_CALLBACK,
+	SRC_ERR_BAD_MODE,
+	SRC_ERR_NULL_CALLBACK,
+	SRC_ERR_NO_VARIABLE_RATIO,
+	SRC_ERR_SINC_PREPARE_DATA_BAD_LEN,
+	SRC_ERR_BAD_INTERNAL_STATE,
+
+	/* This must be the last error number. */
+	SRC_ERR_MAX_ERROR
+} ;
+
+typedef struct SRC_PRIVATE_tag
+{	double	last_ratio, last_position ;
+
+	int		error ;
+	int		channels ;
+
+	/* SRC_MODE_PROCESS or SRC_MODE_CALLBACK */
+	int		mode ;
+
+	/* Pointer to data to converter specific data. */
+	void	*private_data ;
+
+	/* Varispeed process function. */
+	int		(*vari_process) (struct SRC_PRIVATE_tag *psrc, SRC_DATA *data) ;
+
+	/* Constant speed process function. */
+	int		(*const_process) (struct SRC_PRIVATE_tag *psrc, SRC_DATA *data) ;
+
+	/* State reset. */
+	void	(*reset) (struct SRC_PRIVATE_tag *psrc) ;
+
+	/* Data specific to SRC_MODE_CALLBACK. */
+	src_callback_t	callback_func ;
+	void			*user_callback_data ;
+	long			saved_frames ;
+	const float		*saved_data ;
+} SRC_PRIVATE ;
+
+/* In src_sinc.c */
+const char* sinc_get_name (int src_enum) ;
+const char* sinc_get_description (int src_enum) ;
+
+int sinc_set_converter (SRC_PRIVATE *psrc, int src_enum) ;
+
+/* In src_linear.c */
+const char* linear_get_name (int src_enum) ;
+const char* linear_get_description (int src_enum) ;
+
+int linear_set_converter (SRC_PRIVATE *psrc, int src_enum) ;
+
+/* In src_zoh.c */
+const char* zoh_get_name (int src_enum) ;
+const char* zoh_get_description (int src_enum) ;
+
+int zoh_set_converter (SRC_PRIVATE *psrc, int src_enum) ;
+
+/*----------------------------------------------------------
+**	Common static inline functions.
+*/
+
+static inline double
+fmod_one (double x)
+{	double res ;
+
+	res = x - lrint (x) ;
+	if (res < 0.0)
+		return res + 1.0 ;
+
+	return res ;
+} /* fmod_one */
+
+static inline int
+is_bad_src_ratio (double ratio)
+{	return (ratio < (1.0 / SRC_MAX_RATIO) || ratio > (1.0 * SRC_MAX_RATIO)) ;
+} /* is_bad_src_ratio */
+
+
+#endif	/* COMMON_H_INCLUDED */
+