Use the libspeexdsp resampler

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

12 files changed, 2423 insertions, 0 deletions

diff --git a/lib/speexdsp/include/Makefile.am b/lib/speexdsp/include/Makefile.am
new file mode 100644
index 00000000..09613b63
--- /dev/null
+++ b/lib/speexdsp/include/Makefile.am
@@ -0,0 +1,2 @@
+
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diff --git a/lib/speexdsp/include/Makefile.in b/lib/speexdsp/include/Makefile.in
new file mode 100644
index 00000000..181e3f26
--- /dev/null
+++ b/lib/speexdsp/include/Makefile.in
@@ -0,0 +1,636 @@
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new file mode 100644
index 00000000..68789ac9
--- /dev/null
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+
+CTAGS: ctags
+ctags-am: $(TAGS_DEPENDENCIES) $(am__tagged_files)
+	$(am__define_uniq_tagged_files); \
+	test -z "$(CTAGS_ARGS)$$unique" \
+	  || $(CTAGS) $(CTAGSFLAGS) $(AM_CTAGSFLAGS) $(CTAGS_ARGS) \
+	     $$unique
+
+GTAGS:
+	here=`$(am__cd) $(top_builddir) && pwd` \
+	  && $(am__cd) $(top_srcdir) \
+	  && gtags -i $(GTAGS_ARGS) "$$here"
+cscopelist: cscopelist-am
+
+cscopelist-am: $(am__tagged_files)
+	list='$(am__tagged_files)'; \
+	case "$(srcdir)" in \
+	  [\\/]* | ?:[\\/]*) sdir="$(srcdir)" ;; \
+	  *) sdir=$(subdir)/$(srcdir) ;; \
+	esac; \
+	for i in $$list; do \
+	  if test -f "$$i"; then \
+	    echo "$(subdir)/$$i"; \
+	  else \
+	    echo "$$sdir/$$i"; \
+	  fi; \
+	done >> $(top_builddir)/cscope.files
+
+distclean-tags:
+	-rm -f TAGS ID GTAGS GRTAGS GSYMS GPATH tags
+distdir: $(BUILT_SOURCES)
+	$(MAKE) $(AM_MAKEFLAGS) distdir-am
+
+distdir-am: $(DISTFILES)
+	@srcdirstrip=`echo "$(srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
+	topsrcdirstrip=`echo "$(top_srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
+	list='$(DISTFILES)'; \
+	  dist_files=`for file in $$list; do echo $$file; done | \
+	  sed -e "s|^$$srcdirstrip/||;t" \
+	      -e "s|^$$topsrcdirstrip/|$(top_builddir)/|;t"`; \
+	case $$dist_files in \
+	  */*) $(MKDIR_P) `echo "$$dist_files" | \
+			   sed '/\//!d;s|^|$(distdir)/|;s,/[^/]*$$,,' | \
+			   sort -u` ;; \
+	esac; \
+	for file in $$dist_files; do \
+	  if test -f $$file || test -d $$file; then d=.; else d=$(srcdir); fi; \
+	  if test -d $$d/$$file; then \
+	    dir=`echo "/$$file" | sed -e 's,/[^/]*$$,,'`; \
+	    if test -d "$(distdir)/$$file"; then \
+	      find "$(distdir)/$$file" -type d ! -perm -700 -exec chmod u+rwx {} \;; \
+	    fi; \
+	    if test -d $(srcdir)/$$file && test $$d != $(srcdir); then \
+	      cp -fpR $(srcdir)/$$file "$(distdir)$$dir" || exit 1; \
+	      find "$(distdir)/$$file" -type d ! -perm -700 -exec chmod u+rwx {} \;; \
+	    fi; \
+	    cp -fpR $$d/$$file "$(distdir)$$dir" || exit 1; \
+	  else \
+	    test -f "$(distdir)/$$file" \
+	    || cp -p $$d/$$file "$(distdir)/$$file" \
+	    || exit 1; \
+	  fi; \
+	done
+check-am: all-am
+check: check-am
+all-am: Makefile $(HEADERS)
+installdirs:
+	for dir in "$(DESTDIR)$(speexincludedir)" "$(DESTDIR)$(speexincludedir)"; do \
+	  test -z "$$dir" || $(MKDIR_P) "$$dir"; \
+	done
+install: install-am
+install-exec: install-exec-am
+install-data: install-data-am
+uninstall: uninstall-am
+
+install-am: all-am
+	@$(MAKE) $(AM_MAKEFLAGS) install-exec-am install-data-am
+
+installcheck: installcheck-am
+install-strip:
+	if test -z '$(STRIP)'; then \
+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	      install; \
+	else \
+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	    "INSTALL_PROGRAM_ENV=STRIPPROG='$(STRIP)'" install; \
+	fi
+mostlyclean-generic:
+
+clean-generic:
+
+distclean-generic:
+	-test -z "$(CONFIG_CLEAN_FILES)" || rm -f $(CONFIG_CLEAN_FILES)
+	-test . = "$(srcdir)" || test -z "$(CONFIG_CLEAN_VPATH_FILES)" || rm -f $(CONFIG_CLEAN_VPATH_FILES)
+
+maintainer-clean-generic:
+	@echo "This command is intended for maintainers to use"
+	@echo "it deletes files that may require special tools to rebuild."
+clean: clean-am
+
+clean-am: clean-generic clean-libtool mostlyclean-am
+
+distclean: distclean-am
+	-rm -f Makefile
+distclean-am: clean-am distclean-generic distclean-tags
+
+dvi: dvi-am
+
+dvi-am:
+
+html: html-am
+
+html-am:
+
+info: info-am
+
+info-am:
+
+install-data-am: install-nodist_speexincludeHEADERS \
+	install-speexincludeHEADERS
+
+install-dvi: install-dvi-am
+
+install-dvi-am:
+
+install-exec-am:
+
+install-html: install-html-am
+
+install-html-am:
+
+install-info: install-info-am
+
+install-info-am:
+
+install-man:
+
+install-pdf: install-pdf-am
+
+install-pdf-am:
+
+install-ps: install-ps-am
+
+install-ps-am:
+
+installcheck-am:
+
+maintainer-clean: maintainer-clean-am
+	-rm -f Makefile
+maintainer-clean-am: distclean-am maintainer-clean-generic
+
+mostlyclean: mostlyclean-am
+
+mostlyclean-am: mostlyclean-generic mostlyclean-libtool
+
+pdf: pdf-am
+
+pdf-am:
+
+ps: ps-am
+
+ps-am:
+
+uninstall-am: uninstall-nodist_speexincludeHEADERS \
+	uninstall-speexincludeHEADERS
+
+.MAKE: install-am install-strip
+
+.PHONY: CTAGS GTAGS TAGS all all-am check check-am clean clean-generic \
+	clean-libtool cscopelist-am ctags ctags-am distclean \
+	distclean-generic distclean-libtool distclean-tags distdir dvi \
+	dvi-am html html-am info info-am install install-am \
+	install-data install-data-am install-dvi install-dvi-am \
+	install-exec install-exec-am install-html install-html-am \
+	install-info install-info-am install-man \
+	install-nodist_speexincludeHEADERS install-pdf install-pdf-am \
+	install-ps install-ps-am install-speexincludeHEADERS \
+	install-strip installcheck installcheck-am installdirs \
+	maintainer-clean maintainer-clean-generic mostlyclean \
+	mostlyclean-generic mostlyclean-libtool pdf pdf-am ps ps-am \
+	tags tags-am uninstall uninstall-am \
+	uninstall-nodist_speexincludeHEADERS \
+	uninstall-speexincludeHEADERS
+
+.PRECIOUS: Makefile
+
+
+# Tell versions [3.59,3.63) of GNU make to not export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:
diff --git a/lib/speexdsp/include/speex/speex_buffer.h b/lib/speexdsp/include/speex/speex_buffer.h
new file mode 100644
index 00000000..9e85cfcf
--- /dev/null
+++ b/lib/speexdsp/include/speex/speex_buffer.h
@@ -0,0 +1,68 @@
+/* Copyright (C) 2007 Jean-Marc Valin
+
+   File: speex_buffer.h
+   This is a very simple ring buffer implementation. It is not thread-safe
+   so you need to do your own locking.
+
+   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.
+
+   3. The name of the author may not be used to endorse or promote products
+   derived from this software without specific prior written permission.
+
+   THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
+*/
+
+#ifndef SPEEX_BUFFER_H
+#define SPEEX_BUFFER_H
+
+#include "speexdsp_types.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct SpeexBuffer_;
+typedef struct SpeexBuffer_ SpeexBuffer;
+
+SpeexBuffer *speex_buffer_init(int size);
+
+void speex_buffer_destroy(SpeexBuffer *st);
+
+int speex_buffer_write(SpeexBuffer *st, void *data, int len);
+
+int speex_buffer_writezeros(SpeexBuffer *st, int len);
+
+int speex_buffer_read(SpeexBuffer *st, void *data, int len);
+
+int speex_buffer_get_available(SpeexBuffer *st);
+
+int speex_buffer_resize(SpeexBuffer *st, int len);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
+
+
+
+
diff --git a/lib/speexdsp/include/speex/speex_echo.h b/lib/speexdsp/include/speex/speex_echo.h
new file mode 100644
index 00000000..4c1aa5a5
--- /dev/null
+++ b/lib/speexdsp/include/speex/speex_echo.h
@@ -0,0 +1,170 @@
+/* Copyright (C) Jean-Marc Valin */
+/**
+   @file speex_echo.h
+   @brief Echo cancellation
+*/
+/*
+   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.
+
+   3. The name of the author may not be used to endorse or promote products
+   derived from this software without specific prior written permission.
+
+   THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
+*/
+
+#ifndef SPEEX_ECHO_H
+#define SPEEX_ECHO_H
+/** @defgroup SpeexEchoState SpeexEchoState: Acoustic echo canceller
+ *  This is the acoustic echo canceller module.
+ *  @{
+ */
+#include "speexdsp_types.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/** Obtain frame size used by the AEC */
+#define SPEEX_ECHO_GET_FRAME_SIZE 3
+
+/** Set sampling rate */
+#define SPEEX_ECHO_SET_SAMPLING_RATE 24
+/** Get sampling rate */
+#define SPEEX_ECHO_GET_SAMPLING_RATE 25
+
+/* Can't set window sizes */
+/** Get size of impulse response (int32) */
+#define SPEEX_ECHO_GET_IMPULSE_RESPONSE_SIZE 27
+
+/* Can't set window content */
+/** Get impulse response (int32[]) */
+#define SPEEX_ECHO_GET_IMPULSE_RESPONSE 29
+
+/** Internal echo canceller state. Should never be accessed directly. */
+struct SpeexEchoState_;
+
+/** @class SpeexEchoState
+ * This holds the state of the echo canceller. You need one per channel.
+*/
+
+/** Internal echo canceller state. Should never be accessed directly. */
+typedef struct SpeexEchoState_ SpeexEchoState;
+
+/** Creates a new echo canceller state
+ * @param frame_size Number of samples to process at one time (should correspond to 10-20 ms)
+ * @param filter_length Number of samples of echo to cancel (should generally correspond to 100-500 ms)
+ * @return Newly-created echo canceller state
+ */
+SpeexEchoState *speex_echo_state_init(int frame_size, int filter_length);
+
+/** Creates a new multi-channel echo canceller state
+ * @param frame_size Number of samples to process at one time (should correspond to 10-20 ms)
+ * @param filter_length Number of samples of echo to cancel (should generally correspond to 100-500 ms)
+ * @param nb_mic Number of microphone channels
+ * @param nb_speakers Number of speaker channels
+ * @return Newly-created echo canceller state
+ */
+SpeexEchoState *speex_echo_state_init_mc(int frame_size, int filter_length, int nb_mic, int nb_speakers);
+
+/** Destroys an echo canceller state
+ * @param st Echo canceller state
+*/
+void speex_echo_state_destroy(SpeexEchoState *st);
+
+/** Performs echo cancellation a frame, based on the audio sent to the speaker (no delay is added
+ * to playback in this form)
+ *
+ * @param st Echo canceller state
+ * @param rec Signal from the microphone (near end + far end echo)
+ * @param play Signal played to the speaker (received from far end)
+ * @param out Returns near-end signal with echo removed
+ */
+void speex_echo_cancellation(SpeexEchoState *st, const spx_int16_t *rec, const spx_int16_t *play, spx_int16_t *out);
+
+/** Performs echo cancellation a frame (deprecated) */
+void speex_echo_cancel(SpeexEchoState *st, const spx_int16_t *rec, const spx_int16_t *play, spx_int16_t *out, spx_int32_t *Yout);
+
+/** Perform echo cancellation using internal playback buffer, which is delayed by two frames
+ * to account for the delay introduced by most soundcards (but it could be off!)
+ * @param st Echo canceller state
+ * @param rec Signal from the microphone (near end + far end echo)
+ * @param out Returns near-end signal with echo removed
+*/
+void speex_echo_capture(SpeexEchoState *st, const spx_int16_t *rec, spx_int16_t *out);
+
+/** Let the echo canceller know that a frame was just queued to the soundcard
+ * @param st Echo canceller state
+ * @param play Signal played to the speaker (received from far end)
+*/
+void speex_echo_playback(SpeexEchoState *st, const spx_int16_t *play);
+
+/** Reset the echo canceller to its original state
+ * @param st Echo canceller state
+ */
+void speex_echo_state_reset(SpeexEchoState *st);
+
+/** Used like the ioctl function to control the echo canceller parameters
+ *
+ * @param st Echo canceller state
+ * @param request ioctl-type request (one of the SPEEX_ECHO_* macros)
+ * @param ptr Data exchanged to-from function
+ * @return 0 if no error, -1 if request in unknown
+ */
+int speex_echo_ctl(SpeexEchoState *st, int request, void *ptr);
+
+
+
+struct SpeexDecorrState_;
+
+typedef struct SpeexDecorrState_ SpeexDecorrState;
+
+
+/** Create a state for the channel decorrelation algorithm
+    This is useful for multi-channel echo cancellation only
+ * @param rate Sampling rate
+ * @param channels Number of channels (it's a bit pointless if you don't have at least 2)
+ * @param frame_size Size of the frame to process at ones (counting samples *per* channel)
+*/
+SpeexDecorrState *speex_decorrelate_new(int rate, int channels, int frame_size);
+
+/** Remove correlation between the channels by modifying the phase and possibly
+    adding noise in a way that is not (or little) perceptible.
+ * @param st Decorrelator state
+ * @param in Input audio in interleaved format
+ * @param out Result of the decorrelation (out *may* alias in)
+ * @param strength How much alteration of the audio to apply from 0 to 100.
+*/
+void speex_decorrelate(SpeexDecorrState *st, const spx_int16_t *in, spx_int16_t *out, int strength);
+
+/** Destroy a Decorrelation state
+ * @param st State to destroy
+*/
+void speex_decorrelate_destroy(SpeexDecorrState *st);
+
+
+#ifdef __cplusplus
+}
+#endif
+
+
+/** @}*/
+#endif
diff --git a/lib/speexdsp/include/speex/speex_jitter.h b/lib/speexdsp/include/speex/speex_jitter.h
new file mode 100644
index 00000000..8fc8d7ec
--- /dev/null
+++ b/lib/speexdsp/include/speex/speex_jitter.h
@@ -0,0 +1,197 @@
+/* Copyright (C) 2002 Jean-Marc Valin */
+/**
+   @file speex_jitter.h
+   @brief Adaptive jitter buffer for Speex
+*/
+/*
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions
+   are met:
+
+   - Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+
+   - 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.
+
+   - Neither the name of the Xiph.org Foundation nor the names of its
+   contributors may be used to endorse or promote products derived from
+   this software without specific prior written permission.
+
+   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 FOUNDATION 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.
+
+*/
+
+#ifndef SPEEX_JITTER_H
+#define SPEEX_JITTER_H
+/** @defgroup JitterBuffer JitterBuffer: Adaptive jitter buffer
+ *  This is the jitter buffer that reorders UDP/RTP packets and adjusts the buffer size
+ * to maintain good quality and low latency.
+ *  @{
+ */
+
+#include "speexdsp_types.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/** Generic adaptive jitter buffer state */
+struct JitterBuffer_;
+
+/** Generic adaptive jitter buffer state */
+typedef struct JitterBuffer_ JitterBuffer;
+
+/** Definition of an incoming packet */
+typedef struct _JitterBufferPacket JitterBufferPacket;
+
+/** Definition of an incoming packet */
+struct _JitterBufferPacket {
+   char        *data;       /**< Data bytes contained in the packet */
+   spx_uint32_t len;        /**< Length of the packet in bytes */
+   spx_uint32_t timestamp;  /**< Timestamp for the packet */
+   spx_uint32_t span;       /**< Time covered by the packet (same units as timestamp) */
+   spx_uint16_t sequence;   /**< RTP Sequence number if available (0 otherwise) */
+   spx_uint32_t user_data;  /**< Put whatever data you like here (it's ignored by the jitter buffer) */
+};
+
+/** Packet has been retrieved */
+#define JITTER_BUFFER_OK 0
+/** Packet is lost or is late */
+#define JITTER_BUFFER_MISSING 1
+/** A "fake" packet is meant to be inserted here to increase buffering */
+#define JITTER_BUFFER_INSERTION 2
+/** There was an error in the jitter buffer */
+#define JITTER_BUFFER_INTERNAL_ERROR -1
+/** Invalid argument */
+#define JITTER_BUFFER_BAD_ARGUMENT -2
+
+
+/** Set minimum amount of extra buffering required (margin) */
+#define JITTER_BUFFER_SET_MARGIN 0
+/** Get minimum amount of extra buffering required (margin) */
+#define JITTER_BUFFER_GET_MARGIN 1
+/* JITTER_BUFFER_SET_AVAILABLE_COUNT wouldn't make sense */
+
+/** Get the amount of available packets currently buffered */
+#define JITTER_BUFFER_GET_AVAILABLE_COUNT 3
+/** Included because of an early misspelling (will remove in next release) */
+#define JITTER_BUFFER_GET_AVALIABLE_COUNT 3
+
+/** Assign a function to destroy unused packet. When setting that, the jitter
+    buffer no longer copies packet data. */
+#define JITTER_BUFFER_SET_DESTROY_CALLBACK 4
+/**  */
+#define JITTER_BUFFER_GET_DESTROY_CALLBACK 5
+
+/** Tell the jitter buffer to only adjust the delay in multiples of the step parameter provided */
+#define JITTER_BUFFER_SET_DELAY_STEP 6
+/**  */
+#define JITTER_BUFFER_GET_DELAY_STEP 7
+
+/** Tell the jitter buffer to only do concealment in multiples of the size parameter provided */
+#define JITTER_BUFFER_SET_CONCEALMENT_SIZE 8
+#define JITTER_BUFFER_GET_CONCEALMENT_SIZE 9
+
+/** Absolute max amount of loss that can be tolerated regardless of the delay. Typical loss
+    should be half of that or less. */
+#define JITTER_BUFFER_SET_MAX_LATE_RATE 10
+#define JITTER_BUFFER_GET_MAX_LATE_RATE 11
+
+/** Equivalent cost of one percent late packet in timestamp units */
+#define JITTER_BUFFER_SET_LATE_COST 12
+#define JITTER_BUFFER_GET_LATE_COST 13
+
+
+/** Initialises jitter buffer
+ *
+ * @param step_size Starting value for the size of concleanment packets and delay
+       adjustment steps. Can be changed at any time using JITTER_BUFFER_SET_DELAY_STEP
+       and JITTER_BUFFER_GET_CONCEALMENT_SIZE.
+ * @return Newly created jitter buffer state
+ */
+JitterBuffer *jitter_buffer_init(int step_size);
+
+/** Restores jitter buffer to its original state
+ *
+ * @param jitter Jitter buffer state
+ */
+void jitter_buffer_reset(JitterBuffer *jitter);
+
+/** Destroys jitter buffer
+ *
+ * @param jitter Jitter buffer state
+ */
+void jitter_buffer_destroy(JitterBuffer *jitter);
+
+/** Put one packet into the jitter buffer
+ *
+ * @param jitter Jitter buffer state
+ * @param packet Incoming packet
+*/
+void jitter_buffer_put(JitterBuffer *jitter, const JitterBufferPacket *packet);
+
+/** Get one packet from the jitter buffer
+ *
+ * @param jitter Jitter buffer state
+ * @param packet Returned packet
+ * @param desired_span Number of samples (or units) we wish to get from the buffer (no guarantee)
+ * @param current_timestamp Timestamp for the returned packet
+*/
+int jitter_buffer_get(JitterBuffer *jitter, JitterBufferPacket *packet, spx_int32_t desired_span, spx_int32_t *start_offset);
+
+/** Used right after jitter_buffer_get() to obtain another packet that would have the same timestamp.
+ * This is mainly useful for media where a single "frame" can be split into several packets.
+ *
+ * @param jitter Jitter buffer state
+ * @param packet Returned packet
+ */
+int jitter_buffer_get_another(JitterBuffer *jitter, JitterBufferPacket *packet);
+
+/** Get pointer timestamp of jitter buffer
+ *
+ * @param jitter Jitter buffer state
+*/
+int jitter_buffer_get_pointer_timestamp(JitterBuffer *jitter);
+
+/** Advance by one tick
+ *
+ * @param jitter Jitter buffer state
+*/
+void jitter_buffer_tick(JitterBuffer *jitter);
+
+/** Telling the jitter buffer about the remaining data in the application buffer
+ * @param jitter Jitter buffer state
+ * @param rem Amount of data buffered by the application (timestamp units)
+ */
+void jitter_buffer_remaining_span(JitterBuffer *jitter, spx_uint32_t rem);
+
+/** Used like the ioctl function to control the jitter buffer parameters
+ *
+ * @param jitter Jitter buffer state
+ * @param request ioctl-type request (one of the JITTER_BUFFER_* macros)
+ * @param ptr Data exchanged to-from function
+ * @return 0 if no error, -1 if request in unknown
+*/
+int jitter_buffer_ctl(JitterBuffer *jitter, int request, void *ptr);
+
+int jitter_buffer_update_delay(JitterBuffer *jitter, JitterBufferPacket *packet, spx_int32_t *start_offset);
+
+/* @} */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
diff --git a/lib/speexdsp/include/speex/speex_preprocess.h b/lib/speexdsp/include/speex/speex_preprocess.h
new file mode 100644
index 00000000..a2e1210d
--- /dev/null
+++ b/lib/speexdsp/include/speex/speex_preprocess.h
@@ -0,0 +1,219 @@
+/* Copyright (C) 2003 Epic Games
+   Written by Jean-Marc Valin */
+/**
+ *  @file speex_preprocess.h
+ *  @brief Speex preprocessor. The preprocess can do noise suppression,
+ * residual echo suppression (after using the echo canceller), automatic
+ * gain control (AGC) and voice activity detection (VAD).
+*/
+/*
+   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.
+
+   3. The name of the author may not be used to endorse or promote products
+   derived from this software without specific prior written permission.
+
+   THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
+*/
+
+#ifndef SPEEX_PREPROCESS_H
+#define SPEEX_PREPROCESS_H
+/** @defgroup SpeexPreprocessState SpeexPreprocessState: The Speex preprocessor
+ *  This is the Speex preprocessor. The preprocess can do noise suppression,
+ * residual echo suppression (after using the echo canceller), automatic
+ * gain control (AGC) and voice activity detection (VAD).
+ *  @{
+ */
+
+#include "speexdsp_types.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/** State of the preprocessor (one per channel). Should never be accessed directly. */
+struct SpeexPreprocessState_;
+
+/** State of the preprocessor (one per channel). Should never be accessed directly. */
+typedef struct SpeexPreprocessState_ SpeexPreprocessState;
+
+
+/** Creates a new preprocessing state. You MUST create one state per channel processed.
+ * @param frame_size Number of samples to process at one time (should correspond to 10-20 ms). Must be
+ * the same value as that used for the echo canceller for residual echo cancellation to work.
+ * @param sampling_rate Sampling rate used for the input.
+ * @return Newly created preprocessor state
+*/
+SpeexPreprocessState *speex_preprocess_state_init(int frame_size, int sampling_rate);
+
+/** Destroys a preprocessor state
+ * @param st Preprocessor state to destroy
+*/
+void speex_preprocess_state_destroy(SpeexPreprocessState *st);
+
+/** Preprocess a frame
+ * @param st Preprocessor state
+ * @param x Audio sample vector (in and out). Must be same size as specified in speex_preprocess_state_init().
+ * @return Bool value for voice activity (1 for speech, 0 for noise/silence), ONLY if VAD turned on.
+*/
+int speex_preprocess_run(SpeexPreprocessState *st, spx_int16_t *x);
+
+/** Preprocess a frame (deprecated, use speex_preprocess_run() instead)*/
+int speex_preprocess(SpeexPreprocessState *st, spx_int16_t *x, spx_int32_t *echo);
+
+/** Update preprocessor state, but do not compute the output
+ * @param st Preprocessor state
+ * @param x Audio sample vector (in only). Must be same size as specified in speex_preprocess_state_init().
+*/
+void speex_preprocess_estimate_update(SpeexPreprocessState *st, spx_int16_t *x);
+
+/** Used like the ioctl function to control the preprocessor parameters
+ * @param st Preprocessor state
+ * @param request ioctl-type request (one of the SPEEX_PREPROCESS_* macros)
+ * @param ptr Data exchanged to-from function
+ * @return 0 if no error, -1 if request in unknown
+*/
+int speex_preprocess_ctl(SpeexPreprocessState *st, int request, void *ptr);
+
+
+
+/** Set preprocessor denoiser state */
+#define SPEEX_PREPROCESS_SET_DENOISE 0
+/** Get preprocessor denoiser state */
+#define SPEEX_PREPROCESS_GET_DENOISE 1
+
+/** Set preprocessor Automatic Gain Control state */
+#define SPEEX_PREPROCESS_SET_AGC 2
+/** Get preprocessor Automatic Gain Control state */
+#define SPEEX_PREPROCESS_GET_AGC 3
+
+/** Set preprocessor Voice Activity Detection state */
+#define SPEEX_PREPROCESS_SET_VAD 4
+/** Get preprocessor Voice Activity Detection state */
+#define SPEEX_PREPROCESS_GET_VAD 5
+
+/** Set preprocessor Automatic Gain Control level (float) */
+#define SPEEX_PREPROCESS_SET_AGC_LEVEL 6
+/** Get preprocessor Automatic Gain Control level (float) */
+#define SPEEX_PREPROCESS_GET_AGC_LEVEL 7
+
+/** Set preprocessor dereverb state */
+#define SPEEX_PREPROCESS_SET_DEREVERB 8
+/** Get preprocessor dereverb state */
+#define SPEEX_PREPROCESS_GET_DEREVERB 9
+
+/** Set preprocessor dereverb level */
+#define SPEEX_PREPROCESS_SET_DEREVERB_LEVEL 10
+/** Get preprocessor dereverb level */
+#define SPEEX_PREPROCESS_GET_DEREVERB_LEVEL 11
+
+/** Set preprocessor dereverb decay */
+#define SPEEX_PREPROCESS_SET_DEREVERB_DECAY 12
+/** Get preprocessor dereverb decay */
+#define SPEEX_PREPROCESS_GET_DEREVERB_DECAY 13
+
+/** Set probability required for the VAD to go from silence to voice */
+#define SPEEX_PREPROCESS_SET_PROB_START 14
+/** Get probability required for the VAD to go from silence to voice */
+#define SPEEX_PREPROCESS_GET_PROB_START 15
+
+/** Set probability required for the VAD to stay in the voice state (integer percent) */
+#define SPEEX_PREPROCESS_SET_PROB_CONTINUE 16
+/** Get probability required for the VAD to stay in the voice state (integer percent) */
+#define SPEEX_PREPROCESS_GET_PROB_CONTINUE 17
+
+/** Set maximum attenuation of the noise in dB (negative number) */
+#define SPEEX_PREPROCESS_SET_NOISE_SUPPRESS 18
+/** Get maximum attenuation of the noise in dB (negative number) */
+#define SPEEX_PREPROCESS_GET_NOISE_SUPPRESS 19
+
+/** Set maximum attenuation of the residual echo in dB (negative number) */
+#define SPEEX_PREPROCESS_SET_ECHO_SUPPRESS 20
+/** Get maximum attenuation of the residual echo in dB (negative number) */
+#define SPEEX_PREPROCESS_GET_ECHO_SUPPRESS 21
+
+/** Set maximum attenuation of the residual echo in dB when near end is active (negative number) */
+#define SPEEX_PREPROCESS_SET_ECHO_SUPPRESS_ACTIVE 22
+/** Get maximum attenuation of the residual echo in dB when near end is active (negative number) */
+#define SPEEX_PREPROCESS_GET_ECHO_SUPPRESS_ACTIVE 23
+
+/** Set the corresponding echo canceller state so that residual echo suppression can be performed (NULL for no residual echo suppression) */
+#define SPEEX_PREPROCESS_SET_ECHO_STATE 24
+/** Get the corresponding echo canceller state */
+#define SPEEX_PREPROCESS_GET_ECHO_STATE 25
+
+/** Set maximal gain increase in dB/second (int32) */
+#define SPEEX_PREPROCESS_SET_AGC_INCREMENT 26
+
+/** Get maximal gain increase in dB/second (int32) */
+#define SPEEX_PREPROCESS_GET_AGC_INCREMENT 27
+
+/** Set maximal gain decrease in dB/second (int32) */
+#define SPEEX_PREPROCESS_SET_AGC_DECREMENT 28
+
+/** Get maximal gain decrease in dB/second (int32) */
+#define SPEEX_PREPROCESS_GET_AGC_DECREMENT 29
+
+/** Set maximal gain in dB (int32) */
+#define SPEEX_PREPROCESS_SET_AGC_MAX_GAIN 30
+
+/** Get maximal gain in dB (int32) */
+#define SPEEX_PREPROCESS_GET_AGC_MAX_GAIN 31
+
+/*  Can't set loudness */
+/** Get loudness */
+#define SPEEX_PREPROCESS_GET_AGC_LOUDNESS 33
+
+/*  Can't set gain */
+/** Get current gain (int32 percent) */
+#define SPEEX_PREPROCESS_GET_AGC_GAIN 35
+
+/*  Can't set spectrum size */
+/** Get spectrum size for power spectrum (int32) */
+#define SPEEX_PREPROCESS_GET_PSD_SIZE 37
+
+/*  Can't set power spectrum */
+/** Get power spectrum (int32[] of squared values) */
+#define SPEEX_PREPROCESS_GET_PSD 39
+
+/*  Can't set noise size */
+/** Get spectrum size for noise estimate (int32)  */
+#define SPEEX_PREPROCESS_GET_NOISE_PSD_SIZE 41
+
+/*  Can't set noise estimate */
+/** Get noise estimate (int32[] of squared values) */
+#define SPEEX_PREPROCESS_GET_NOISE_PSD 43
+
+/* Can't set speech probability */
+/** Get speech probability in last frame (int32).  */
+#define SPEEX_PREPROCESS_GET_PROB 45
+
+/** Set preprocessor Automatic Gain Control level (int32) */
+#define SPEEX_PREPROCESS_SET_AGC_TARGET 46
+/** Get preprocessor Automatic Gain Control level (int32) */
+#define SPEEX_PREPROCESS_GET_AGC_TARGET 47
+
+#ifdef __cplusplus
+}
+#endif
+
+/** @}*/
+#endif
diff --git a/lib/speexdsp/include/speex/speex_resampler.h b/lib/speexdsp/include/speex/speex_resampler.h
new file mode 100644
index 00000000..901de37b
--- /dev/null
+++ b/lib/speexdsp/include/speex/speex_resampler.h
@@ -0,0 +1,343 @@
+/* Copyright (C) 2007 Jean-Marc Valin
+
+   File: speex_resampler.h
+   Resampling code
+
+   The design goals of this code are:
+      - Very fast algorithm
+      - Low memory requirement
+      - Good *perceptual* quality (and not best SNR)
+
+   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.
+
+   3. The name of the author may not be used to endorse or promote products
+   derived from this software without specific prior written permission.
+
+   THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
+*/
+
+
+#ifndef SPEEX_RESAMPLER_H
+#define SPEEX_RESAMPLER_H
+
+#ifdef OUTSIDE_SPEEX
+
+/********* WARNING: MENTAL SANITY ENDS HERE *************/
+
+/* If the resampler is defined outside of Speex, we change the symbol names so that
+   there won't be any clash if linking with Speex later on. */
+
+/* #define RANDOM_PREFIX your software name here */
+#ifndef RANDOM_PREFIX
+#error "Please define RANDOM_PREFIX (above) to something specific to your project to prevent symbol name clashes"
+#endif
+
+#define CAT_PREFIX2(a,b) a ## b
+#define CAT_PREFIX(a,b) CAT_PREFIX2(a, b)
+
+#define speex_resampler_init CAT_PREFIX(RANDOM_PREFIX,_resampler_init)
+#define speex_resampler_init_frac CAT_PREFIX(RANDOM_PREFIX,_resampler_init_frac)
+#define speex_resampler_destroy CAT_PREFIX(RANDOM_PREFIX,_resampler_destroy)
+#define speex_resampler_process_float CAT_PREFIX(RANDOM_PREFIX,_resampler_process_float)
+#define speex_resampler_process_int CAT_PREFIX(RANDOM_PREFIX,_resampler_process_int)
+#define speex_resampler_process_interleaved_float CAT_PREFIX(RANDOM_PREFIX,_resampler_process_interleaved_float)
+#define speex_resampler_process_interleaved_int CAT_PREFIX(RANDOM_PREFIX,_resampler_process_interleaved_int)
+#define speex_resampler_set_rate CAT_PREFIX(RANDOM_PREFIX,_resampler_set_rate)
+#define speex_resampler_get_rate CAT_PREFIX(RANDOM_PREFIX,_resampler_get_rate)
+#define speex_resampler_set_rate_frac CAT_PREFIX(RANDOM_PREFIX,_resampler_set_rate_frac)
+#define speex_resampler_get_ratio CAT_PREFIX(RANDOM_PREFIX,_resampler_get_ratio)
+#define speex_resampler_set_quality CAT_PREFIX(RANDOM_PREFIX,_resampler_set_quality)
+#define speex_resampler_get_quality CAT_PREFIX(RANDOM_PREFIX,_resampler_get_quality)
+#define speex_resampler_set_input_stride CAT_PREFIX(RANDOM_PREFIX,_resampler_set_input_stride)
+#define speex_resampler_get_input_stride CAT_PREFIX(RANDOM_PREFIX,_resampler_get_input_stride)
+#define speex_resampler_set_output_stride CAT_PREFIX(RANDOM_PREFIX,_resampler_set_output_stride)
+#define speex_resampler_get_output_stride CAT_PREFIX(RANDOM_PREFIX,_resampler_get_output_stride)
+#define speex_resampler_get_input_latency CAT_PREFIX(RANDOM_PREFIX,_resampler_get_input_latency)
+#define speex_resampler_get_output_latency CAT_PREFIX(RANDOM_PREFIX,_resampler_get_output_latency)
+#define speex_resampler_skip_zeros CAT_PREFIX(RANDOM_PREFIX,_resampler_skip_zeros)
+#define speex_resampler_reset_mem CAT_PREFIX(RANDOM_PREFIX,_resampler_reset_mem)
+#define speex_resampler_strerror CAT_PREFIX(RANDOM_PREFIX,_resampler_strerror)
+
+#define spx_int16_t short
+#define spx_int32_t int
+#define spx_uint16_t unsigned short
+#define spx_uint32_t unsigned int
+
+#define speex_assert(cond)
+
+#else /* OUTSIDE_SPEEX */
+
+#include "speexdsp_types.h"
+
+#endif /* OUTSIDE_SPEEX */
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define SPEEX_RESAMPLER_QUALITY_MAX 10
+#define SPEEX_RESAMPLER_QUALITY_MIN 0
+#define SPEEX_RESAMPLER_QUALITY_DEFAULT 4
+#define SPEEX_RESAMPLER_QUALITY_VOIP 3
+#define SPEEX_RESAMPLER_QUALITY_DESKTOP 5
+
+enum {
+   RESAMPLER_ERR_SUCCESS         = 0,
+   RESAMPLER_ERR_ALLOC_FAILED    = 1,
+   RESAMPLER_ERR_BAD_STATE       = 2,
+   RESAMPLER_ERR_INVALID_ARG     = 3,
+   RESAMPLER_ERR_PTR_OVERLAP     = 4,
+   RESAMPLER_ERR_OVERFLOW        = 5,
+
+   RESAMPLER_ERR_MAX_ERROR
+};
+
+struct SpeexResamplerState_;
+typedef struct SpeexResamplerState_ SpeexResamplerState;
+
+/** Create a new resampler with integer input and output rates.
+ * @param nb_channels Number of channels to be processed
+ * @param in_rate Input sampling rate (integer number of Hz).
+ * @param out_rate Output sampling rate (integer number of Hz).
+ * @param quality Resampling quality between 0 and 10, where 0 has poor quality
+ * and 10 has very high quality.
+ * @return Newly created resampler state
+ * @retval NULL Error: not enough memory
+ */
+SpeexResamplerState *speex_resampler_init(spx_uint32_t nb_channels,
+                                          spx_uint32_t in_rate,
+                                          spx_uint32_t out_rate,
+                                          int quality,
+                                          int *err);
+
+/** Create a new resampler with fractional input/output rates. The sampling
+ * rate ratio is an arbitrary rational number with both the numerator and
+ * denominator being 32-bit integers.
+ * @param nb_channels Number of channels to be processed
+ * @param ratio_num Numerator of the sampling rate ratio
+ * @param ratio_den Denominator of the sampling rate ratio
+ * @param in_rate Input sampling rate rounded to the nearest integer (in Hz).
+ * @param out_rate Output sampling rate rounded to the nearest integer (in Hz).
+ * @param quality Resampling quality between 0 and 10, where 0 has poor quality
+ * and 10 has very high quality.
+ * @return Newly created resampler state
+ * @retval NULL Error: not enough memory
+ */
+SpeexResamplerState *speex_resampler_init_frac(spx_uint32_t nb_channels,
+                                               spx_uint32_t ratio_num,
+                                               spx_uint32_t ratio_den,
+                                               spx_uint32_t in_rate,
+                                               spx_uint32_t out_rate,
+                                               int quality,
+                                               int *err);
+
+/** Destroy a resampler state.
+ * @param st Resampler state
+ */
+void speex_resampler_destroy(SpeexResamplerState *st);
+
+/** Resample a float array. The input and output buffers must *not* overlap.
+ * @param st Resampler state
+ * @param channel_index Index of the channel to process for the multi-channel
+ * base (0 otherwise)
+ * @param in Input buffer
+ * @param in_len Number of input samples in the input buffer. Returns the
+ * number of samples processed
+ * @param out Output buffer
+ * @param out_len Size of the output buffer. Returns the number of samples written
+ */
+int speex_resampler_process_float(SpeexResamplerState *st,
+                                   spx_uint32_t channel_index,
+                                   const float *in,
+                                   spx_uint32_t *in_len,
+                                   float *out,
+                                   spx_uint32_t *out_len);
+
+/** Resample an int array. The input and output buffers must *not* overlap.
+ * @param st Resampler state
+ * @param channel_index Index of the channel to process for the multi-channel
+ * base (0 otherwise)
+ * @param in Input buffer
+ * @param in_len Number of input samples in the input buffer. Returns the number
+ * of samples processed
+ * @param out Output buffer
+ * @param out_len Size of the output buffer. Returns the number of samples written
+ */
+int speex_resampler_process_int(SpeexResamplerState *st,
+                                 spx_uint32_t channel_index,
+                                 const spx_int16_t *in,
+                                 spx_uint32_t *in_len,
+                                 spx_int16_t *out,
+                                 spx_uint32_t *out_len);
+
+/** Resample an interleaved float array. The input and output buffers must *not* overlap.
+ * @param st Resampler state
+ * @param in Input buffer
+ * @param in_len Number of input samples in the input buffer. Returns the number
+ * of samples processed. This is all per-channel.
+ * @param out Output buffer
+ * @param out_len Size of the output buffer. Returns the number of samples written.
+ * This is all per-channel.
+ */
+int speex_resampler_process_interleaved_float(SpeexResamplerState *st,
+                                               const float *in,
+                                               spx_uint32_t *in_len,
+                                               float *out,
+                                               spx_uint32_t *out_len);
+
+/** Resample an interleaved int array. The input and output buffers must *not* overlap.
+ * @param st Resampler state
+ * @param in Input buffer
+ * @param in_len Number of input samples in the input buffer. Returns the number
+ * of samples processed. This is all per-channel.
+ * @param out Output buffer
+ * @param out_len Size of the output buffer. Returns the number of samples written.
+ * This is all per-channel.
+ */
+int speex_resampler_process_interleaved_int(SpeexResamplerState *st,
+                                             const spx_int16_t *in,
+                                             spx_uint32_t *in_len,
+                                             spx_int16_t *out,
+                                             spx_uint32_t *out_len);
+
+/** Set (change) the input/output sampling rates (integer value).
+ * @param st Resampler state
+ * @param in_rate Input sampling rate (integer number of Hz).
+ * @param out_rate Output sampling rate (integer number of Hz).
+ */
+int speex_resampler_set_rate(SpeexResamplerState *st,
+                              spx_uint32_t in_rate,
+                              spx_uint32_t out_rate);
+
+/** Get the current input/output sampling rates (integer value).
+ * @param st Resampler state
+ * @param in_rate Input sampling rate (integer number of Hz) copied.
+ * @param out_rate Output sampling rate (integer number of Hz) copied.
+ */
+void speex_resampler_get_rate(SpeexResamplerState *st,
+                              spx_uint32_t *in_rate,
+                              spx_uint32_t *out_rate);
+
+/** Set (change) the input/output sampling rates and resampling ratio
+ * (fractional values in Hz supported).
+ * @param st Resampler state
+ * @param ratio_num Numerator of the sampling rate ratio
+ * @param ratio_den Denominator of the sampling rate ratio
+ * @param in_rate Input sampling rate rounded to the nearest integer (in Hz).
+ * @param out_rate Output sampling rate rounded to the nearest integer (in Hz).
+ */
+int speex_resampler_set_rate_frac(SpeexResamplerState *st,
+                                   spx_uint32_t ratio_num,
+                                   spx_uint32_t ratio_den,
+                                   spx_uint32_t in_rate,
+                                   spx_uint32_t out_rate);
+
+/** Get the current resampling ratio. This will be reduced to the least
+ * common denominator.
+ * @param st Resampler state
+ * @param ratio_num Numerator of the sampling rate ratio copied
+ * @param ratio_den Denominator of the sampling rate ratio copied
+ */
+void speex_resampler_get_ratio(SpeexResamplerState *st,
+                               spx_uint32_t *ratio_num,
+                               spx_uint32_t *ratio_den);
+
+/** Set (change) the conversion quality.
+ * @param st Resampler state
+ * @param quality Resampling quality between 0 and 10, where 0 has poor
+ * quality and 10 has very high quality.
+ */
+int speex_resampler_set_quality(SpeexResamplerState *st,
+                                 int quality);
+
+/** Get the conversion quality.
+ * @param st Resampler state
+ * @param quality Resampling quality between 0 and 10, where 0 has poor
+ * quality and 10 has very high quality.
+ */
+void speex_resampler_get_quality(SpeexResamplerState *st,
+                                 int *quality);
+
+/** Set (change) the input stride.
+ * @param st Resampler state
+ * @param stride Input stride
+ */
+void speex_resampler_set_input_stride(SpeexResamplerState *st,
+                                      spx_uint32_t stride);
+
+/** Get the input stride.
+ * @param st Resampler state
+ * @param stride Input stride copied
+ */
+void speex_resampler_get_input_stride(SpeexResamplerState *st,
+                                      spx_uint32_t *stride);
+
+/** Set (change) the output stride.
+ * @param st Resampler state
+ * @param stride Output stride
+ */
+void speex_resampler_set_output_stride(SpeexResamplerState *st,
+                                      spx_uint32_t stride);
+
+/** Get the output stride.
+ * @param st Resampler state copied
+ * @param stride Output stride
+ */
+void speex_resampler_get_output_stride(SpeexResamplerState *st,
+                                      spx_uint32_t *stride);
+
+/** Get the latency introduced by the resampler measured in input samples.
+ * @param st Resampler state
+ */
+int speex_resampler_get_input_latency(SpeexResamplerState *st);
+
+/** Get the latency introduced by the resampler measured in output samples.
+ * @param st Resampler state
+ */
+int speex_resampler_get_output_latency(SpeexResamplerState *st);
+
+/** Make sure that the first samples to go out of the resamplers don't have
+ * leading zeros. This is only useful before starting to use a newly created
+ * resampler. It is recommended to use that when resampling an audio file, as
+ * it will generate a file with the same length. For real-time processing,
+ * it is probably easier not to use this call (so that the output duration
+ * is the same for the first frame).
+ * @param st Resampler state
+ */
+int speex_resampler_skip_zeros(SpeexResamplerState *st);
+
+/** Reset a resampler so a new (unrelated) stream can be processed.
+ * @param st Resampler state
+ */
+int speex_resampler_reset_mem(SpeexResamplerState *st);
+
+/** Returns the English meaning for an error code
+ * @param err Error code
+ * @return English string
+ */
+const char *speex_resampler_strerror(int err);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
diff --git a/lib/speexdsp/include/speex/speexdsp_config_types.h b/lib/speexdsp/include/speex/speexdsp_config_types.h
new file mode 100644
index 00000000..84385cc5
--- /dev/null
+++ b/lib/speexdsp/include/speex/speexdsp_config_types.h
@@ -0,0 +1,11 @@
+#ifndef __SPEEX_TYPES_H__
+#define __SPEEX_TYPES_H__
+
+#include <stdint.h>
+
+typedef int16_t spx_int16_t;
+typedef uint16_t spx_uint16_t;
+typedef int32_t spx_int32_t;
+typedef uint32_t spx_uint32_t;
+
+#endif
diff --git a/lib/speexdsp/include/speex/speexdsp_config_types.h.in b/lib/speexdsp/include/speex/speexdsp_config_types.h.in
new file mode 100644
index 00000000..5ea7b556
--- /dev/null
+++ b/lib/speexdsp/include/speex/speexdsp_config_types.h.in
@@ -0,0 +1,12 @@
+#ifndef __SPEEX_TYPES_H__
+#define __SPEEX_TYPES_H__
+
+@INCLUDE_STDINT@
+
+typedef @SIZE16@ spx_int16_t;
+typedef @USIZE16@ spx_uint16_t;
+typedef @SIZE32@ spx_int32_t;
+typedef @USIZE32@ spx_uint32_t;
+
+#endif
+
diff --git a/lib/speexdsp/include/speex/speexdsp_types.h b/lib/speexdsp/include/speex/speexdsp_types.h
new file mode 100644
index 00000000..4b4a76a4
--- /dev/null
+++ b/lib/speexdsp/include/speex/speexdsp_types.h
@@ -0,0 +1,126 @@
+/* speexdsp_types.h taken from libogg */
+/********************************************************************
+ *                                                                  *
+ * THIS FILE IS PART OF THE OggVorbis SOFTWARE CODEC SOURCE CODE.   *
+ * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS     *
+ * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE *
+ * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING.       *
+ *                                                                  *
+ * THE OggVorbis SOURCE CODE IS (C) COPYRIGHT 1994-2002             *
+ * by the Xiph.Org Foundation http://www.xiph.org/                  *
+ *                                                                  *
+ ********************************************************************
+
+ function: #ifdef jail to whip a few platforms into the UNIX ideal.
+ last mod: $Id: os_types.h 7524 2004-08-11 04:20:36Z conrad $
+
+ ********************************************************************/
+/**
+   @file speexdsp_types.h
+   @brief Speex types
+*/
+#ifndef _SPEEX_TYPES_H
+#define _SPEEX_TYPES_H
+
+#if defined(_WIN32)
+
+#  if defined(__CYGWIN__)
+#    include <_G_config.h>
+     typedef _G_int32_t spx_int32_t;
+     typedef _G_uint32_t spx_uint32_t;
+     typedef _G_int16_t spx_int16_t;
+     typedef _G_uint16_t spx_uint16_t;
+#  elif defined(__MINGW32__)
+     typedef short spx_int16_t;
+     typedef unsigned short spx_uint16_t;
+     typedef int spx_int32_t;
+     typedef unsigned int spx_uint32_t;
+#  elif defined(__MWERKS__)
+     typedef int spx_int32_t;
+     typedef unsigned int spx_uint32_t;
+     typedef short spx_int16_t;
+     typedef unsigned short spx_uint16_t;
+#  else
+     /* MSVC/Borland */
+     typedef __int32 spx_int32_t;
+     typedef unsigned __int32 spx_uint32_t;
+     typedef __int16 spx_int16_t;
+     typedef unsigned __int16 spx_uint16_t;
+#  endif
+
+#elif defined(__MACOS__)
+
+#  include <sys/types.h>
+   typedef SInt16 spx_int16_t;
+   typedef UInt16 spx_uint16_t;
+   typedef SInt32 spx_int32_t;
+   typedef UInt32 spx_uint32_t;
+
+#elif (defined(__APPLE__) && defined(__MACH__)) /* MacOS X Framework build */
+
+#  include <sys/types.h>
+   typedef int16_t spx_int16_t;
+   typedef u_int16_t spx_uint16_t;
+   typedef int32_t spx_int32_t;
+   typedef u_int32_t spx_uint32_t;
+
+#elif defined(__BEOS__)
+
+   /* Be */
+#  include <inttypes.h>
+   typedef int16_t spx_int16_t;
+   typedef u_int16_t spx_uint16_t;
+   typedef int32_t spx_int32_t;
+   typedef u_int32_t spx_uint32_t;
+
+#elif defined (__EMX__)
+
+   /* OS/2 GCC */
+   typedef short spx_int16_t;
+   typedef unsigned short spx_uint16_t;
+   typedef int spx_int32_t;
+   typedef unsigned int spx_uint32_t;
+
+#elif defined (DJGPP)
+
+   /* DJGPP */
+   typedef short spx_int16_t;
+   typedef int spx_int32_t;
+   typedef unsigned int spx_uint32_t;
+
+#elif defined(R5900)
+
+   /* PS2 EE */
+   typedef int spx_int32_t;
+   typedef unsigned spx_uint32_t;
+   typedef short spx_int16_t;
+
+#elif defined(__SYMBIAN32__)
+
+   /* Symbian GCC */
+   typedef signed short spx_int16_t;
+   typedef unsigned short spx_uint16_t;
+   typedef signed int spx_int32_t;
+   typedef unsigned int spx_uint32_t;
+
+#elif defined(CONFIG_TI_C54X) || defined (CONFIG_TI_C55X)
+
+   typedef short spx_int16_t;
+   typedef unsigned short spx_uint16_t;
+   typedef long spx_int32_t;
+   typedef unsigned long spx_uint32_t;
+
+#elif defined(CONFIG_TI_C6X)
+
+   typedef short spx_int16_t;
+   typedef unsigned short spx_uint16_t;
+   typedef int spx_int32_t;
+   typedef unsigned int spx_uint32_t;
+
+#else
+
+#include "speexdsp_config_types.h"
+
+#endif
+
+#endif  /* _SPEEX_TYPES_H */