Binaural synthesis (confbridge): Adds utils/conf_bridge_binaural_hrir_importer

Adds the import tool for converting a HRIR database to hrirs.h

ASTERISK-26292

Change-Id: I51eb31b54c23ffd9b544bdc6a09d20c112c8a547

build_tools/menuselect-deps.in

@@ -57,6 +57,7 @@ RESAMPLE=@PBX_RESAMPLE@
 FFTW3=@PBX_FFTW3@
 RADIUS=@PBX_RADIUS@
 LAUNCHD=@PBX_LAUNCHD@
+SNDFILE=@PBX_SNDFILE@
 SPANDSP=@PBX_SPANDSP@
 SPEEX=@PBX_SPEEX@
 SPEEXDSP=@PBX_SPEEXDSP@

configure

@@ -835,6 +835,10 @@ PBX_SDL
 SDL_DIR
 SDL_INCLUDE
 SDL_LIB
+PBX_SNDFILE
+SNDFILE_DIR
+SNDFILE_INCLUDE
+SNDFILE_LIB
 PBX_RESAMPLE
 RESAMPLE_DIR
 RESAMPLE_INCLUDE
@@ -1258,7 +1262,6 @@ COMPRESS
 FIND
 PYTHON
 FLEX
-CUT
 CAT
 CMP
 BISON
@@ -1345,7 +1348,6 @@ infodir
 docdir
 oldincludedir
 includedir
-runstatedir
 localstatedir
 sharedstatedir
 sysconfdir
@@ -1432,6 +1434,7 @@ with_pwlib
 with_radius
 with_fftw3
 with_resample
+with_sndfile
 with_sdl
 with_SDL_image
 with_spandsp
@@ -1528,7 +1531,6 @@ datadir='${datarootdir}'
 sysconfdir='${prefix}/etc'
 sharedstatedir='${prefix}/com'
 localstatedir='${prefix}/var'
-runstatedir='${localstatedir}/run'
 includedir='${prefix}/include'
 oldincludedir='/usr/include'
 docdir='${datarootdir}/doc/${PACKAGE_TARNAME}'
@@ -1781,15 +1783,6 @@ do
   | -silent | --silent | --silen | --sile | --sil)
     silent=yes ;;
 
-  -runstatedir | --runstatedir | --runstatedi | --runstated \
-  | --runstate | --runstat | --runsta | --runst | --runs \
-  | --run | --ru | --r)
-    ac_prev=runstatedir ;;
-  -runstatedir=* | --runstatedir=* | --runstatedi=* | --runstated=* \
-  | --runstate=* | --runstat=* | --runsta=* | --runst=* | --runs=* \
-  | --run=* | --ru=* | --r=*)
-    runstatedir=$ac_optarg ;;
-
   -sbindir | --sbindir | --sbindi | --sbind | --sbin | --sbi | --sb)
     ac_prev=sbindir ;;
   -sbindir=* | --sbindir=* | --sbindi=* | --sbind=* | --sbin=* \
@@ -1927,7 +1920,7 @@ fi
 for ac_var in	exec_prefix prefix bindir sbindir libexecdir datarootdir \
 		datadir sysconfdir sharedstatedir localstatedir includedir \
 		oldincludedir docdir infodir htmldir dvidir pdfdir psdir \
-		libdir localedir mandir runstatedir
+		libdir localedir mandir
 do
   eval ac_val=\$$ac_var
   # Remove trailing slashes.
@@ -2080,7 +2073,6 @@ Fine tuning of the installation directories:
   --sysconfdir=DIR        read-only single-machine data [PREFIX/etc]
   --sharedstatedir=DIR    modifiable architecture-independent data [PREFIX/com]
   --localstatedir=DIR     modifiable single-machine data [PREFIX/var]
-  --runstatedir=DIR       modifiable per-process data [LOCALSTATEDIR/run]
   --libdir=DIR            object code libraries [EPREFIX/lib]
   --includedir=DIR        C header files [PREFIX/include]
   --oldincludedir=DIR     C header files for non-gcc [/usr/include]
@@ -2194,6 +2186,7 @@ Optional Packages:
   --with-radius=PATH      use Radius Client files in PATH
   --with-fftw3=PATH       use LIBFFTW3 files in PATH
   --with-resample=PATH    use LIBRESAMPLE files in PATH
+  --with-sndfile=PATH     use libsndfile files in PATH
   --with-sdl=PATH         use Sdl files in PATH
   --with-SDL_image=PATH   use Sdl Image files in PATH
   --with-spandsp=PATH     use SPANDSP files in PATH
@@ -6848,47 +6841,6 @@ $as_echo "no" >&6; }
 fi
 
 
-# Extract the first word of "cut", so it can be a program name with args.
-set dummy cut; ac_word=$2
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
-$as_echo_n "checking for $ac_word... " >&6; }
-if ${ac_cv_path_CUT+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-  case $CUT in
-  [\\/]* | ?:[\\/]*)
-  ac_cv_path_CUT="$CUT" # Let the user override the test with a path.
-  ;;
-  *)
-  as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
-for as_dir in $PATH
-do
-  IFS=$as_save_IFS
-  test -z "$as_dir" && as_dir=.
-    for ac_exec_ext in '' $ac_executable_extensions; do
-  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
-    ac_cv_path_CUT="$as_dir/$ac_word$ac_exec_ext"
-    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
-    break 2
-  fi
-done
-  done
-IFS=$as_save_IFS
-
-  test -z "$ac_cv_path_CUT" && ac_cv_path_CUT=":"
-  ;;
-esac
-fi
-CUT=$ac_cv_path_CUT
-if test -n "$CUT"; then
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $CUT" >&5
-$as_echo "$CUT" >&6; }
-else
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
-fi
-
-
 # Extract the first word of "flex", so it can be a program name with args.
 set dummy flex; ac_word=$2
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
@@ -9338,7 +9290,7 @@ $as_echo "configuring" >&6; }
 		as_fn_error $? "nm is required to build bundled pjproject" "$LINENO" 5
 	fi
 	if test "${MD5}" = ":" ; then
-		as_fn_error $? "md5dum is required to build bundled pjproject" "$LINENO" 5
+		as_fn_error $? "md5sum is required to build bundled pjproject" "$LINENO" 5
 	fi
 	if test "${CAT}" = ":" ; then
 		as_fn_error $? "cat is required to build bundled pjproject" "$LINENO" 5
@@ -12064,6 +12016,38 @@ fi
 
 
 
+    SNDFILE_DESCRIP="libsndfile"
+    SNDFILE_OPTION="sndfile"
+    PBX_SNDFILE=0
+
+# Check whether --with-sndfile was given.
+if test "${with_sndfile+set}" = set; then :
+  withval=$with_sndfile;
+	case ${withval} in
+	n|no)
+	USE_SNDFILE=no
+	# -1 is a magic value used by menuselect to know that the package
+	# was disabled, other than 'not found'
+	PBX_SNDFILE=-1
+	;;
+	y|ye|yes)
+	ac_mandatory_list="${ac_mandatory_list} SNDFILE"
+	;;
+	*)
+	SNDFILE_DIR="${withval}"
+	ac_mandatory_list="${ac_mandatory_list} SNDFILE"
+	;;
+	esac
+
+fi
+
+
+
+
+
+
+
+
     SDL_DESCRIP="Sdl"
     SDL_OPTION="sdl"
     PBX_SDL=0
@@ -14838,7 +14822,7 @@ else
     We can't simply define LARGE_OFF_T to be 9223372036854775807,
     since some C++ compilers masquerading as C compilers
     incorrectly reject 9223372036854775807.  */
-#define LARGE_OFF_T ((((off_t) 1 << 31) << 31) - 1 + (((off_t) 1 << 31) << 31))
+#define LARGE_OFF_T (((off_t) 1 << 62) - 1 + ((off_t) 1 << 62))
   int off_t_is_large[(LARGE_OFF_T % 2147483629 == 721
 		       && LARGE_OFF_T % 2147483647 == 1)
 		      ? 1 : -1];
@@ -14884,7 +14868,7 @@ else
     We can't simply define LARGE_OFF_T to be 9223372036854775807,
     since some C++ compilers masquerading as C compilers
     incorrectly reject 9223372036854775807.  */
-#define LARGE_OFF_T ((((off_t) 1 << 31) << 31) - 1 + (((off_t) 1 << 31) << 31))
+#define LARGE_OFF_T (((off_t) 1 << 62) - 1 + ((off_t) 1 << 62))
   int off_t_is_large[(LARGE_OFF_T % 2147483629 == 721
 		       && LARGE_OFF_T % 2147483647 == 1)
 		      ? 1 : -1];
@@ -14908,7 +14892,7 @@ rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
     We can't simply define LARGE_OFF_T to be 9223372036854775807,
     since some C++ compilers masquerading as C compilers
     incorrectly reject 9223372036854775807.  */
-#define LARGE_OFF_T ((((off_t) 1 << 31) << 31) - 1 + (((off_t) 1 << 31) << 31))
+#define LARGE_OFF_T (((off_t) 1 << 62) - 1 + ((off_t) 1 << 62))
   int off_t_is_large[(LARGE_OFF_T % 2147483629 == 721
 		       && LARGE_OFF_T % 2147483647 == 1)
 		      ? 1 : -1];
@@ -14953,7 +14937,7 @@ else
     We can't simply define LARGE_OFF_T to be 9223372036854775807,
     since some C++ compilers masquerading as C compilers
     incorrectly reject 9223372036854775807.  */
-#define LARGE_OFF_T ((((off_t) 1 << 31) << 31) - 1 + (((off_t) 1 << 31) << 31))
+#define LARGE_OFF_T (((off_t) 1 << 62) - 1 + ((off_t) 1 << 62))
   int off_t_is_large[(LARGE_OFF_T % 2147483629 == 721
 		       && LARGE_OFF_T % 2147483647 == 1)
 		      ? 1 : -1];
@@ -14977,7 +14961,7 @@ rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
     We can't simply define LARGE_OFF_T to be 9223372036854775807,
     since some C++ compilers masquerading as C compilers
     incorrectly reject 9223372036854775807.  */
-#define LARGE_OFF_T ((((off_t) 1 << 31) << 31) - 1 + (((off_t) 1 << 31) << 31))
+#define LARGE_OFF_T (((off_t) 1 << 62) - 1 + ((off_t) 1 << 62))
   int off_t_is_large[(LARGE_OFF_T % 2147483629 == 721
 		       && LARGE_OFF_T % 2147483647 == 1)
 		      ? 1 : -1];
@@ -17086,21 +17070,6 @@ fi
 
 
 
-# https support (in main/http.c) uses funopen on BSD systems,
-# fopencookie on linux
-for ac_func in funopen fopencookie
-do :
-  as_ac_var=`$as_echo "ac_cv_func_$ac_func" | $as_tr_sh`
-ac_fn_c_check_func "$LINENO" "$ac_func" "$as_ac_var"
-if eval test \"x\$"$as_ac_var"\" = x"yes"; then :
-  cat >>confdefs.h <<_ACEOF
-#define `$as_echo "HAVE_$ac_func" | $as_tr_cpp` 1
-_ACEOF
-
-fi
-done
-
-
 for ac_func in inet_aton
 do :
   ac_fn_c_check_func "$LINENO" "inet_aton" "ac_cv_func_inet_aton"
@@ -29413,6 +29382,112 @@ $as_echo "#define HAVE_FFTW 1" >>confdefs.h
 
 fi
 
+if test "x${PBX_SNDFILE}" != "x1" -a "${USE_SNDFILE}" != "no"; then
+   pbxlibdir=""
+   # if --with-SNDFILE=DIR has been specified, use it.
+   if test "x${SNDFILE_DIR}" != "x"; then
+      if test -d ${SNDFILE_DIR}/lib; then
+         pbxlibdir="-L${SNDFILE_DIR}/lib"
+      else
+         pbxlibdir="-L${SNDFILE_DIR}"
+      fi
+   fi
+   pbxfuncname="sf_open"
+   if test "x${pbxfuncname}" = "x" ; then   # empty lib, assume only headers
+      AST_SNDFILE_FOUND=yes
+   else
+      ast_ext_lib_check_save_CFLAGS="${CFLAGS}"
+      CFLAGS="${CFLAGS} "
+      as_ac_Lib=`$as_echo "ac_cv_lib_sndfile_${pbxfuncname}" | $as_tr_sh`
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for ${pbxfuncname} in -lsndfile" >&5
+$as_echo_n "checking for ${pbxfuncname} in -lsndfile... " >&6; }
+if eval \${$as_ac_Lib+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  ac_check_lib_save_LIBS=$LIBS
+LIBS="-lsndfile ${pbxlibdir} -lsndfile $LIBS"
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+/* Override any GCC internal prototype to avoid an error.
+   Use char because int might match the return type of a GCC
+   builtin and then its argument prototype would still apply.  */
+#ifdef __cplusplus
+extern "C"
+#endif
+char ${pbxfuncname} ();
+int
+main ()
+{
+return ${pbxfuncname} ();
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+  eval "$as_ac_Lib=yes"
+else
+  eval "$as_ac_Lib=no"
+fi
+rm -f core conftest.err conftest.$ac_objext \
+    conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
+fi
+eval ac_res=\$$as_ac_Lib
+	       { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
+$as_echo "$ac_res" >&6; }
+if eval test \"x\$"$as_ac_Lib"\" = x"yes"; then :
+  AST_SNDFILE_FOUND=yes
+else
+  AST_SNDFILE_FOUND=no
+fi
+
+      CFLAGS="${ast_ext_lib_check_save_CFLAGS}"
+   fi
+
+   # now check for the header.
+   if test "${AST_SNDFILE_FOUND}" = "yes"; then
+      SNDFILE_LIB="${pbxlibdir} -lsndfile -lsndfile"
+      # if --with-SNDFILE=DIR has been specified, use it.
+      if test "x${SNDFILE_DIR}" != "x"; then
+         SNDFILE_INCLUDE="-I${SNDFILE_DIR}/include"
+      fi
+      SNDFILE_INCLUDE="${SNDFILE_INCLUDE} "
+      if test "xsndfile.h" = "x" ; then	# no header, assume found
+         SNDFILE_HEADER_FOUND="1"
+      else				# check for the header
+         ast_ext_lib_check_saved_CPPFLAGS="${CPPFLAGS}"
+         CPPFLAGS="${CPPFLAGS} ${SNDFILE_INCLUDE}"
+         ac_fn_c_check_header_mongrel "$LINENO" "sndfile.h" "ac_cv_header_sndfile_h" "$ac_includes_default"
+if test "x$ac_cv_header_sndfile_h" = xyes; then :
+  SNDFILE_HEADER_FOUND=1
+else
+  SNDFILE_HEADER_FOUND=0
+fi
+
+
+         CPPFLAGS="${ast_ext_lib_check_saved_CPPFLAGS}"
+      fi
+      if test "x${SNDFILE_HEADER_FOUND}" = "x0" ; then
+         SNDFILE_LIB=""
+         SNDFILE_INCLUDE=""
+      else
+         if test "x${pbxfuncname}" = "x" ; then		# only checking headers -> no library
+            SNDFILE_LIB=""
+         fi
+         PBX_SNDFILE=1
+         cat >>confdefs.h <<_ACEOF
+#define HAVE_SNDFILE 1
+_ACEOF
+
+      fi
+   fi
+fi
+
+
+
+
+
 
     if test "x${PBX_SPANDSP}" != "x1" -a "${USE_SPANDSP}" != "no"; then
         if test "xminimum version of SpanDSP" != "x"; then

configure.ac

@@ -551,6 +551,7 @@ AST_EXT_LIB_SETUP([PWLIB], [PWlib], [pwlib])
 AST_EXT_LIB_SETUP([RADIUS], [Radius Client], [radius])
 AST_EXT_LIB_SETUP([FFTW3], [LIBFFTW3], [fftw3])
 AST_EXT_LIB_SETUP([RESAMPLE], [LIBRESAMPLE], [resample])
+AST_EXT_LIB_SETUP([SNDFILE], [libsndfile], [sndfile])
 AST_EXT_LIB_SETUP([SDL], [Sdl], [sdl])
 AST_EXT_LIB_SETUP([SDL_IMAGE], [Sdl Image], [SDL_image])
 AST_EXT_LIB_SETUP([SPANDSP], [SPANDSP], [spandsp])
@@ -2284,6 +2285,9 @@ AST_EXT_LIB_CHECK([FFTW3], [fftw3], [fftw_alloc_real], [fftw3.h], [-lfftw3])
 if test "$PBX_FFTW3" = "1"; then
 	AC_DEFINE([HAVE_FFTW], 1, [Define 1 if your system has fftw.])
 fi
+AST_EXT_LIB_CHECK([SNDFILE], [sndfile], [sf_open], [sndfile.h], [-lsndfile])
+
+
 
 AST_C_COMPILE_CHECK([SPANDSP], [
 		#if SPANDSP_RELEASE_DATE < 20080516

include/asterisk/autoconfig.h.in

@@ -254,9 +254,6 @@
 /* Define to 1 if you have the `fmodl' function. */
 #undef HAVE_FMODL
 
-/* Define to 1 if you have the `fopencookie' function. */
-#undef HAVE_FOPENCOOKIE
-
 /* Define to 1 if you have the `fork' function. */
 #undef HAVE_FORK
 
@@ -269,9 +266,6 @@
 /* Define to 1 if you have the `ftruncate' function. */
 #undef HAVE_FTRUNCATE
 
-/* Define to 1 if you have the `funopen' function. */
-#undef HAVE_FUNOPEN
-
 /* Define to 1 if your GCC C compiler provides atomic operations. */
 #undef HAVE_GCC_ATOMICS
 
@@ -828,6 +822,9 @@
 /* Define to 1 if you have the `sinl' function. */
 #undef HAVE_SINL
 
+/* Define to 1 if you have the libsndfile library. */
+#undef HAVE_SNDFILE
+
 /* Define to 1 if you have the `socket' function. */
 #undef HAVE_SOCKET
 

makeopts.in

@@ -380,3 +380,6 @@ TINFO_DIR=@TINFO_DIR@
 # if poll is not present, let the makefile know.
 POLL_AVAILABLE=@HAS_POLL@
 TIMERFD_INCLUDE=@TIMERFD_INCLUDE@
+
+SNDFILE_INCLUDE=@SNDFILE_INCLUDE@
+SNDFILE_LIB=@SNDFILE_LIB@

utils/Makefile

@@ -70,6 +70,10 @@ ifneq ($(filter pbx_ael,$(MENUSELECT_PBX)),)
   UTILS:=$(filter-out conf2ael,$(UTILS))
 endif
 
+ifeq ($(SNDFILE_LIB),)
+  UTILS:=$(filter-out conf_bridge_binaural_hrir_importer,$(UTILS))
+endif
+
 all: $(UTILS)
 
 install:
@@ -93,6 +97,7 @@ clean:
 	rm -f db1-ast/.*.d
 	@$(MAKE) -C db1-ast clean
 
+
 md5.c: $(ASTTOPDIR)/main/md5.c
 	$(ECHO_PREFIX) echo "   [CP] $(subst $(ASTTOPDIR)/,,$<) -> $@"
 	$(CMD_PREFIX) cp "$<" "$@"
@@ -188,6 +193,10 @@ smsq: LIBS+=$(POPT_LIB)
 
 streamplayer: streamplayer.o
 
+conf_bridge_binaural_hrir_importer: LIBS+=$(SNDFILE_LIB)
+conf_bridge_binaural_hrir_importer: _ASTCFLAGS+=$(SNDFILE_INCLUDE)
+conf_bridge_binaural_hrir_importer: conf_bridge_binaural_hrir_importer.o
+
 muted: muted.o
 muted: LIBS+=$(AUDIO_LIBS)
 muted: _ASTCFLAGS:=$(filter-out -Werror,$(_ASTCFLAGS))

utils/conf_bridge_binaural_hrir_importer.c

@@ -0,0 +1,148 @@
+/*
+ * Asterisk -- An open source telephony toolkit.
+ *
+ * Copyright (C) 2016, Digium, Inc.
+ *
+ * Frank Haase <fra.haase@gmail.com>
+ * Dennis Guse <dennis.guse@alumni.tu-berlin.de>
+ *
+ * See http://www.asterisk.org for more information about
+ * the Asterisk project. Please do not directly contact
+ * any of the maintainers of this project for assistance;
+ * the project provides a web site, mailing lists and IRC
+ * channels for your use.
+ *
+ * This program is free software, distributed under the terms of
+ * the GNU General Public License Version 2. See the LICENSE file
+ * at the top of the source tree.
+ */
+
+/*!
+ * \file
+ * Converts a Head Related Impulse Response (HRIR) database (a multi-channel wave) into a C header file.
+ * HRIR for the left ear and HRIR for right ear have to be interleaved.
+ * No further signal processing is applied (e.g., resampling).
+ *
+ * Info messages are printed to stderror and the generated header file to output.
+ */
+
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <sndfile.h>
+
+int main (int argc, char **argv)
+{
+	char *hrir_filename;
+	unsigned int binaural_index_start;
+	unsigned int binaural_index_end;
+
+	SNDFILE *hrir_file;
+	SF_INFO hrir_info;
+	float *hrir_data;
+
+	unsigned int impulse_response_index_start;
+	unsigned int impulse_response_index_end;
+
+	int j;
+	int ir_current;
+
+	if(argc != 4) {
+		puts("HRIR database to C header file converter.");
+		puts("Usage: conf_bridge_binaural_hrir_importer HRIR.wav INDEX_START INDEX_END > OUTPUT.h");
+		puts("Example: conf_bridge_binaural_hrir_importer hrirs.wav 0 180 > ../bridges/bridge_softmix/include/hrirs.h");
+
+		return -1;
+	}
+
+	/* Parse arguments */
+	hrir_filename = argv[1];
+	binaural_index_start = atoi(argv[2]);
+	binaural_index_end = atoi(argv[3]);
+
+	/* Read HRIR database */
+	hrir_file = sf_open(hrir_filename, SFM_READ, &hrir_info);
+	if(hrir_file == NULL) {
+		fprintf(stderr, "ERROR: Could not open HRIR database (%s).\n", hrir_filename);
+
+		return -1;
+	}
+	fprintf(stderr, "INFO: Opened HRIR database (%s) with: number channels: %d; samplerate: %d; samples per channel: %ld\n", hrir_filename, hrir_info.channels, hrir_info.samplerate, hrir_info.frames);
+
+	hrir_data = (float *)malloc(hrir_info.channels * hrir_info.frames * sizeof(float));
+	if(hrir_data == NULL) {
+		fprintf(stderr, "ERROR: Out of memory!");
+
+		return -1;
+	}
+
+	/* Channels are interleaved */
+	sf_read_float(hrir_file, hrir_data, hrir_info.channels * hrir_info.frames);
+	sf_close(hrir_file);
+
+	if(binaural_index_start >= binaural_index_end) {
+		fprintf(stderr, "ERROR: INDEX_START (%d) must be smaller than INDEX_END (%d).", binaural_index_start, binaural_index_end);
+		free(hrir_data);
+
+		return -1;
+	}
+
+	if (binaural_index_end * 2 >= hrir_info.channels) {
+		fprintf(stderr, "ERROR: END_INDEX (%d) is out of range for HRIR database (%s).\n", binaural_index_end, hrir_filename);
+		free(hrir_data);
+
+		return -1;
+	}
+
+	/* Convert indices */
+	impulse_response_index_start = 2 * binaural_index_start;
+	impulse_response_index_end = (binaural_index_end + 1) * 2;
+
+	/* Write header */
+	printf("//Used hrirs database: %s\n", hrir_filename);
+	printf("//Start index in database: %d\n", impulse_response_index_start);
+	printf("//End index in database: %d\n", impulse_response_index_end);
+
+	printf("#define HRIRS_IMPULSE_LEN %ld\n", hrir_info.frames);
+	printf("#define HRIRS_IMPULSE_SIZE %d\n", binaural_index_end - binaural_index_start + 1);
+	printf("#define HRIRS_SAMPLE_RATE %d\n", hrir_info.samplerate);
+
+	printf("float hrirs_left[HRIRS_IMPULSE_SIZE][HRIRS_IMPULSE_LEN] = {\n");
+	for (ir_current = impulse_response_index_start; ir_current < impulse_response_index_end; ir_current += 2) {
+			printf("{");
+
+			for (j = 0; j < hrir_info.frames - 1; j++) {
+				printf("%.16f,", hrir_data[ir_current * hrir_info.frames + j]);
+			}
+			/* Write last without trailing "," */
+			printf("%.16f", hrir_data[ir_current * hrir_info.frames + hrir_info.frames - 1]);
+
+			if (ir_current + 2 < impulse_response_index_end) {
+				printf("},\n");
+			}	else {
+				printf("}};");
+			}
+	}
+
+	printf("\nfloat hrirs_right[HRIRS_IMPULSE_SIZE][HRIRS_IMPULSE_LEN] = {\n");
+	for (ir_current = impulse_response_index_start + 1; ir_current < impulse_response_index_end + 1; ir_current += 2) {
+			printf("{");
+
+			for (j = 0; j < hrir_info.frames - 1; j++) {
+				printf("%.16f,", hrir_data[ir_current * hrir_info.frames + j]);
+			}
+			 /* Write last without trailing "," */
+			printf("%.16f", hrir_data[ir_current * hrir_info.frames + hrir_info.frames - 1]);
+
+			if (ir_current + 2 < impulse_response_index_end) {
+				printf("},\n");
+			}	else {
+				printf("}};");
+			}
+	}
+
+	fprintf(stderr, "INFO: Successfully converted: imported %d impulse responses.\n", impulse_response_index_end - impulse_response_index_start);
+	free(hrir_data);
+
+	return 0;
+}

utils/utils.xml

@@ -20,6 +20,11 @@
 	<depend>newt</depend>
 	<support_level>extended</support_level>
   </member>
+  <member name="conf_bridge_binaural_hrir_importer">
+	<defaultenabled>no</defaultenabled>
+	<depend>sndfile</depend>
+	<support_level>extended</support_level>
+  </member>
   <member name="check_expr">
 	<defaultenabled>no</defaultenabled>
 	<support_level>extended</support_level>