Use the libspeexdsp resampler

AFAICT it runs a little slower? but it's fixed point, and has much
better understood audio characteristics.

lib/speexdsp/config.h.in

@@ -0,0 +1,183 @@
+/* config.h.in.  Generated from configure.ac by autoheader.  */
+
+/* Define if building universal (internal helper macro) */
+#undef AC_APPLE_UNIVERSAL_BUILD
+
+/* Make use of ARM4 assembly optimizations */
+#undef ARM4_ASM
+
+/* Make use of ARM5E assembly optimizations */
+#undef ARM5E_ASM
+
+/* Make use of Blackfin assembly optimizations */
+#undef BFIN_ASM
+
+/* Disable all parts of the API that are using floats */
+#undef DISABLE_FLOAT_API
+
+/* Symbol visibility prefix */
+#undef EXPORT
+
+/* Debug fixed-point implementation */
+#undef FIXED_DEBUG
+
+/* Compile as fixed-point */
+#undef FIXED_POINT
+
+/* Compile as floating-point */
+#undef FLOATING_POINT
+
+/* Define to 1 if you have the <dlfcn.h> header file. */
+#undef HAVE_DLFCN_H
+
+/* Define to 1 if you have the <inttypes.h> header file. */
+#undef HAVE_INTTYPES_H
+
+/* Define to 1 if you have the <stdint.h> header file. */
+#undef HAVE_STDINT_H
+
+/* Define to 1 if you have the <stdio.h> header file. */
+#undef HAVE_STDIO_H
+
+/* Define to 1 if you have the <stdlib.h> header file. */
+#undef HAVE_STDLIB_H
+
+/* Define to 1 if you have the <strings.h> header file. */
+#undef HAVE_STRINGS_H
+
+/* Define to 1 if you have the <string.h> header file. */
+#undef HAVE_STRING_H
+
+/* Define to 1 if you have the <sys/audioio.h> header file. */
+#undef HAVE_SYS_AUDIOIO_H
+
+/* Define to 1 if you have the <sys/soundcard.h> header file. */
+#undef HAVE_SYS_SOUNDCARD_H
+
+/* Define to 1 if you have the <sys/stat.h> header file. */
+#undef HAVE_SYS_STAT_H
+
+/* Define to 1 if you have the <sys/types.h> header file. */
+#undef HAVE_SYS_TYPES_H
+
+/* Define to 1 if you have the <unistd.h> header file. */
+#undef HAVE_UNISTD_H
+
+/* Define to the sub-directory where libtool stores uninstalled libraries. */
+#undef LT_OBJDIR
+
+/* Define to the address where bug reports for this package should be sent. */
+#undef PACKAGE_BUGREPORT
+
+/* Define to the full name of this package. */
+#undef PACKAGE_NAME
+
+/* Define to the full name and version of this package. */
+#undef PACKAGE_STRING
+
+/* Define to the one symbol short name of this package. */
+#undef PACKAGE_TARNAME
+
+/* Define to the home page for this package. */
+#undef PACKAGE_URL
+
+/* Define to the version of this package. */
+#undef PACKAGE_VERSION
+
+/* Resample with full SINC table (no interpolation) */
+#undef RESAMPLE_FULL_SINC_TABLE
+
+/* The size of `int', as computed by sizeof. */
+#undef SIZEOF_INT
+
+/* The size of `int16_t', as computed by sizeof. */
+#undef SIZEOF_INT16_T
+
+/* The size of `int32_t', as computed by sizeof. */
+#undef SIZEOF_INT32_T
+
+/* The size of `long', as computed by sizeof. */
+#undef SIZEOF_LONG
+
+/* The size of `short', as computed by sizeof. */
+#undef SIZEOF_SHORT
+
+/* The size of `uint16_t', as computed by sizeof. */
+#undef SIZEOF_UINT16_T
+
+/* The size of `uint32_t', as computed by sizeof. */
+#undef SIZEOF_UINT32_T
+
+/* The size of `u_int16_t', as computed by sizeof. */
+#undef SIZEOF_U_INT16_T
+
+/* The size of `u_int32_t', as computed by sizeof. */
+#undef SIZEOF_U_INT32_T
+
+/* Define to 1 if all of the C90 standard headers exist (not just the ones
+   required in a freestanding environment). This macro is provided for
+   backward compatibility; new code need not use it. */
+#undef STDC_HEADERS
+
+/* Enable support for TI C55X DSP */
+#undef TI_C55X
+
+/* Use FFTW3 for FFT */
+#undef USE_GPL_FFTW3
+
+/* Use Intel Math Kernel Library for FFT */
+#undef USE_INTEL_MKL
+
+/* Use KISS Fast Fourier Transform */
+#undef USE_KISS_FFT
+
+/* Enable NEON support */
+#undef USE_NEON
+
+/* Use FFT from OggVorbis */
+#undef USE_SMALLFT
+
+/* Enable SSE support */
+#undef USE_SSE
+
+/* Enable SSE2 support */
+#undef USE_SSE2
+
+/* Use C99 variable-size arrays */
+#undef VAR_ARRAYS
+
+/* Define WORDS_BIGENDIAN to 1 if your processor stores words with the most
+   significant byte first (like Motorola and SPARC, unlike Intel). */
+#if defined AC_APPLE_UNIVERSAL_BUILD
+# if defined __BIG_ENDIAN__
+#  define WORDS_BIGENDIAN 1
+# endif
+#else
+# ifndef WORDS_BIGENDIAN
+#  undef WORDS_BIGENDIAN
+# endif
+#endif
+
+/* Define to empty if `const' does not conform to ANSI C. */
+#undef const
+
+/* Define to `__inline__' or `__inline' if that's what the C compiler
+   calls it, or to nothing if 'inline' is not supported under any name.  */
+#ifndef __cplusplus
+#undef inline
+#endif
+
+/* Define to the equivalent of the C99 'restrict' keyword, or to
+   nothing if this is not supported.  Do not define if restrict is
+   supported only directly.  */
+#undef restrict
+/* Work around a bug in older versions of Sun C++, which did not
+   #define __restrict__ or support _Restrict or __restrict__
+   even though the corresponding Sun C compiler ended up with
+   "#define restrict _Restrict" or "#define restrict __restrict__"
+   in the previous line.  This workaround can be removed once
+   we assume Oracle Developer Studio 12.5 (2016) or later.  */
+#if defined __SUNPRO_CC && !defined __RESTRICT && !defined __restrict__
+# define _Restrict
+# define __restrict__
+#endif