cannam@85: /*
cannam@85: ** Copyright (C) 2002-2011 Erik de Castro Lopo <erikd@mega-nerd.com>
cannam@85: **
cannam@85: ** This program is free software; you can redistribute it and/or modify
cannam@85: ** it under the terms of the GNU General Public License as published by
cannam@85: ** the Free Software Foundation; either version 2 of the License, or
cannam@85: ** (at your option) any later version.
cannam@85: **
cannam@85: ** This program is distributed in the hope that it will be useful,
cannam@85: ** but WITHOUT ANY WARRANTY; without even the implied warranty of
cannam@85: ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
cannam@85: ** GNU General Public License for more details.
cannam@85: **
cannam@85: ** You should have received a copy of the GNU General Public License
cannam@85: ** along with this program; if not, write to the Free Software
cannam@85: ** Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
cannam@85: */
cannam@85: 
cannam@85: #include <stdio.h>
cannam@85: #include <stdlib.h>
cannam@85: #include <unistd.h>
cannam@85: #include <string.h>
cannam@85: #include <ctype.h>
cannam@85: 
cannam@85: #include "config.h"
cannam@85: 
cannam@85: #if (HAVE_FFTW3 && HAVE_SNDFILE && HAVE_SYS_TIMES_H)
cannam@85: 
cannam@85: #include <time.h>
cannam@85: #include <sys/times.h>
cannam@85: 
cannam@85: #include <sndfile.h>
cannam@85: #include <math.h>
cannam@85: #include <sys/utsname.h>
cannam@85: 
cannam@85: #include "util.h"
cannam@85: 
cannam@85: #define	MAX_FREQS		4
cannam@85: #define	BUFFER_LEN		80000
cannam@85: 
cannam@85: #define SAFE_STRNCAT(dest,src,len)								\
cannam@85: 		{	int safe_strncat_count ;							\
cannam@85: 			safe_strncat_count = (len) - strlen (dest) - 1 ;	\
cannam@85: 			strncat ((dest), (src), safe_strncat_count) ;		\
cannam@85: 			(dest) [(len) - 1] = 0 ;							\
cannam@85: 			} ;
cannam@85: 
cannam@85: typedef struct
cannam@85: {	int		freq_count ;
cannam@85: 	double	freqs [MAX_FREQS] ;
cannam@85: 
cannam@85: 	int		output_samplerate ;
cannam@85: 	int		pass_band_peaks ;
cannam@85: 
cannam@85: 	double	peak_value ;
cannam@85: } SNR_TEST ;
cannam@85: 
cannam@85: typedef struct
cannam@85: {	const char	*progname ;
cannam@85: 	const char	*version_cmd ;
cannam@85: 	const char	*version_start ;
cannam@85: 	const char	*convert_cmd ;
cannam@85: 	int			format ;
cannam@85: } RESAMPLE_PROG ;
cannam@85: 
cannam@85: static char *get_progname (char *) ;
cannam@85: static void usage_exit (const char *, const RESAMPLE_PROG *prog, int count) ;
cannam@85: static void measure_program (const RESAMPLE_PROG *prog, int verbose) ;
cannam@85: static void generate_source_wav (const char *filename, const double *freqs, int freq_count, int format) ;
cannam@85: static const char* get_machine_details (void) ;
cannam@85: 
cannam@85: static char	version_string [512] ;
cannam@85: 
cannam@85: int
cannam@85: main (int argc, char *argv [])
cannam@85: {	static RESAMPLE_PROG resample_progs [] =
cannam@85: 	{	{	"sndfile-resample",
cannam@85: 			"examples/sndfile-resample --version",
cannam@85: 			"libsamplerate",
cannam@85: 			"examples/sndfile-resample --max-speed -c 0 -to %d source.wav destination.wav",
cannam@85: 			SF_FORMAT_WAV | SF_FORMAT_PCM_32
cannam@85: 			},
cannam@85: 		{	"sox",
cannam@85: 			"sox -h 2>&1",
cannam@85: 			"sox",
cannam@85: 			"sox source.wav -r %d destination.wav resample 0.835",
cannam@85: 			SF_FORMAT_WAV | SF_FORMAT_PCM_32
cannam@85: 			},
cannam@85: 		{	"ResampAudio",
cannam@85: 			"ResampAudio --version",
cannam@85: 			"ResampAudio",
cannam@85: 			"ResampAudio -f cutoff=0.41,atten=100,ratio=128 -s %d source.wav destination.wav",
cannam@85: 			SF_FORMAT_WAV | SF_FORMAT_PCM_32
cannam@85: 			},
cannam@85: 
cannam@85: 		/*-
cannam@85: 		{	/+*
cannam@85: 			** The Shibatch converter doesn't work for all combinations of
cannam@85: 			** source and destination sample rates. Therefore it can't be
cannam@85: 			** included in this test.
cannam@85: 			*+/
cannam@85: 			"shibatch",
cannam@85: 			"ssrc",
cannam@85: 			"Shibatch",
cannam@85: 			"ssrc --rate %d source.wav destination.wav",
cannam@85: 			SF_FORMAT_WAV | SF_FORMAT_PCM_32
cannam@85: 			},-*/
cannam@85: 
cannam@85: 		/*-
cannam@85: 		{	/+*
cannam@85: 			** The resample program is not able to match the bandwidth and SNR
cannam@85: 			** specs or sndfile-resample and hence will not be tested.
cannam@85: 			*+/
cannam@85: 			"resample",
cannam@85: 			"resample -version",
cannam@85: 			"resample",
cannam@85: 			"resample -to %d source.wav destination.wav",
cannam@85: 			SF_FORMAT_WAV | SF_FORMAT_FLOAT
cannam@85: 			},-*/
cannam@85: 
cannam@85: 		/*-
cannam@85: 		{	"mplayer",
cannam@85: 			"mplayer -v 2>&1",
cannam@85: 			"MPlayer ",
cannam@85: 			"mplayer -ao pcm -srate %d source.wav >/dev/null 2>&1 && mv audiodump.wav destination.wav",
cannam@85: 			SF_FORMAT_WAV | SF_FORMAT_PCM_32
cannam@85: 			},-*/
cannam@85: 
cannam@85: 		} ; /* resample_progs */
cannam@85: 
cannam@85: 	char	*progname ;
cannam@85: 	int 	prog = 0, verbose = 0 ;
cannam@85: 
cannam@85: 	progname = get_progname (argv [0]) ;
cannam@85: 
cannam@85: 	printf ("\n  %s : evaluate a sample rate converter.\n", progname) ;
cannam@85: 
cannam@85: 	if (argc == 3 && strcmp ("--verbose", argv [1]) == 0)
cannam@85: 	{	verbose = 1 ;
cannam@85: 		prog = atoi (argv [2]) ;
cannam@85: 		}
cannam@85: 	else if (argc == 2)
cannam@85: 	{	verbose = 0 ;
cannam@85: 		prog = atoi (argv [1]) ;
cannam@85: 		}
cannam@85: 	else
cannam@85: 		usage_exit (progname, resample_progs, ARRAY_LEN (resample_progs)) ;
cannam@85: 
cannam@85: 	if (prog < 0 || prog >= ARRAY_LEN (resample_progs))
cannam@85: 		usage_exit (progname, resample_progs, ARRAY_LEN (resample_progs)) ;
cannam@85: 
cannam@85: 	measure_program (& (resample_progs [prog]), verbose) ;
cannam@85: 
cannam@85: 	puts ("") ;
cannam@85: 
cannam@85: 	return 0 ;
cannam@85: } /* main */
cannam@85: 
cannam@85: /*==============================================================================
cannam@85: */
cannam@85: 
cannam@85: static char *
cannam@85: get_progname (char *progname)
cannam@85: {	char *cptr ;
cannam@85: 
cannam@85: 	if ((cptr = strrchr (progname, '/')) != NULL)
cannam@85: 		progname = cptr + 1 ;
cannam@85: 
cannam@85: 	if ((cptr = strrchr (progname, '\\')) != NULL)
cannam@85: 		progname = cptr + 1 ;
cannam@85: 
cannam@85: 	return progname ;
cannam@85: } /* get_progname */
cannam@85: 
cannam@85: static void
cannam@85: usage_exit (const char *progname, const RESAMPLE_PROG *prog, int count)
cannam@85: {	int k ;
cannam@85: 
cannam@85: 	printf ("\n  Usage : %s <number>\n\n", progname) ;
cannam@85: 
cannam@85: 	puts ("  where <number> specifies the program to test:\n") ;
cannam@85: 
cannam@85: 	for (k = 0 ; k < count ; k++)
cannam@85: 		printf ("    %d : %s\n", k, prog [k].progname) ;
cannam@85: 
cannam@85: 	puts ("\n"
cannam@85: 		" Obviously to test a given program you have to have it available on\n"
cannam@85: 		" your system. See http://www.mega-nerd.com/SRC/quality.html for\n"
cannam@85: 		" the download location of these programs.\n") ;
cannam@85: 
cannam@85: 	exit (1) ;
cannam@85: } /* usage_exit */
cannam@85: 
cannam@85: static const char*
cannam@85: get_machine_details (void)
cannam@85: {	static char namestr [256] ;
cannam@85: 
cannam@85: 	struct utsname name ;
cannam@85: 
cannam@85: 	if (uname (&name) != 0)
cannam@85: 	{	snprintf (namestr, sizeof (namestr), "Unknown") ;
cannam@85: 		return namestr ;
cannam@85: 		} ;
cannam@85: 
cannam@85: 	snprintf (namestr, sizeof (namestr), "%s (%s %s %s)", name.nodename,
cannam@85: 			name.machine, name.sysname, name.release) ;
cannam@85: 
cannam@85: 	return namestr ;
cannam@85: } /* get_machine_details */
cannam@85: 
cannam@85: 
cannam@85: /*==============================================================================
cannam@85: */
cannam@85: 
cannam@85: static void
cannam@85: get_version_string (const RESAMPLE_PROG *prog)
cannam@85: {	FILE *file ;
cannam@85: 	char *cptr ;
cannam@85: 
cannam@85: 	/* Default. */
cannam@85: 	snprintf (version_string, sizeof (version_string), "no version") ;
cannam@85: 
cannam@85: 	if (prog->version_cmd == NULL)
cannam@85: 		return ;
cannam@85: 
cannam@85: 	if ((file = popen (prog->version_cmd, "r")) == NULL)
cannam@85: 		return ;
cannam@85: 
cannam@85: 	while ((cptr = fgets (version_string, sizeof (version_string), file)) != NULL)
cannam@85: 	{
cannam@85: 		if (strstr (cptr, prog->version_start) != NULL)
cannam@85: 			break ;
cannam@85: 
cannam@85: 		version_string [0] = 0 ;
cannam@85: 		} ;
cannam@85: 
cannam@85: 	pclose (file) ;
cannam@85: 
cannam@85: 	/* Remove trailing newline. */
cannam@85: 	if ((cptr = strchr (version_string, '\n')) != NULL)
cannam@85: 		cptr [0] = 0 ;
cannam@85: 
cannam@85: 	/* Remove leading whitespace from version string. */
cannam@85: 	cptr = version_string ;
cannam@85: 	while (cptr [0] != 0 && isspace (cptr [0]))
cannam@85: 		cptr ++ ;
cannam@85: 
cannam@85: 	if (cptr != version_string)
cannam@85: 		strncpy (version_string, cptr, sizeof (version_string)) ;
cannam@85: 
cannam@85: 	return ;
cannam@85: } /* get_version_string */
cannam@85: 
cannam@85: static void
cannam@85: generate_source_wav (const char *filename, const double *freqs, int freq_count, int format)
cannam@85: {	static float buffer [BUFFER_LEN] ;
cannam@85: 
cannam@85: 	SNDFILE *sndfile ;
cannam@85: 	SF_INFO sfinfo ;
cannam@85: 
cannam@85: 	sfinfo.channels = 1 ;
cannam@85: 	sfinfo.samplerate = 44100 ;
cannam@85: 	sfinfo.format = format ;
cannam@85: 
cannam@85: 	if ((sndfile = sf_open (filename, SFM_WRITE, &sfinfo)) == NULL)
cannam@85: 	{	printf ("Line %d : cound not open '%s' : %s\n", __LINE__, filename, sf_strerror (NULL)) ;
cannam@85: 		exit (1) ;
cannam@85: 		} ;
cannam@85: 
cannam@85: 	sf_command (sndfile, SFC_SET_ADD_PEAK_CHUNK, NULL, SF_FALSE) ;
cannam@85: 
cannam@85: 	gen_windowed_sines (freq_count, freqs, 0.9, buffer, ARRAY_LEN (buffer)) ;
cannam@85: 
cannam@85: 	if (sf_write_float (sndfile, buffer, ARRAY_LEN (buffer)) != ARRAY_LEN (buffer))
cannam@85: 	{	printf ("Line %d : sf_write_float short write.\n", __LINE__) ;
cannam@85: 		exit (1) ;
cannam@85: 		} ;
cannam@85: 
cannam@85: 	sf_close (sndfile) ;
cannam@85: } /* generate_source_wav */
cannam@85: 
cannam@85: static double
cannam@85: measure_destination_wav (char *filename, int *output_samples, int expected_peaks)
cannam@85: {	static float buffer [250000] ;
cannam@85: 
cannam@85: 	SNDFILE *sndfile ;
cannam@85: 	SF_INFO sfinfo ;
cannam@85: 	double snr ;
cannam@85: 
cannam@85: 	if ((sndfile = sf_open (filename, SFM_READ, &sfinfo)) == NULL)
cannam@85: 	{	printf ("Line %d : Cound not open '%s' : %s\n", __LINE__, filename, sf_strerror (NULL)) ;
cannam@85: 		exit (1) ;
cannam@85: 		} ;
cannam@85: 
cannam@85: 	if (sfinfo.channels != 1)
cannam@85: 	{	printf ("Line %d : Bad channel count (%d). Should be 1.\n", __LINE__, sfinfo.channels) ;
cannam@85: 		exit (1) ;
cannam@85: 		} ;
cannam@85: 
cannam@85: 	if (sfinfo.frames > ARRAY_LEN (buffer))
cannam@85: 	{	printf ("Line %d : Too many frames (%ld) of data in file.\n", __LINE__, (long) sfinfo.frames) ;
cannam@85: 		exit (1) ;
cannam@85: 		} ;
cannam@85: 
cannam@85: 	*output_samples = (int) sfinfo.frames ;
cannam@85: 
cannam@85: 	if (sf_read_float (sndfile, buffer, sfinfo.frames) != sfinfo.frames)
cannam@85: 	{	printf ("Line %d : Bad read.\n", __LINE__) ;
cannam@85: 		exit (1) ;
cannam@85: 		} ;
cannam@85: 
cannam@85: 	sf_close (sndfile) ;
cannam@85: 
cannam@85: 	snr = calculate_snr (buffer, sfinfo.frames, expected_peaks) ;
cannam@85: 
cannam@85: 	return snr ;
cannam@85: } /* measure_desination_wav */
cannam@85: 
cannam@85: static double
cannam@85: measure_snr (const RESAMPLE_PROG *prog, int *output_samples, int verbose)
cannam@85: {	static SNR_TEST snr_test [] =
cannam@85: 	{
cannam@85: 		{	1,	{ 0.211111111111 },		48000,		1,	1.0 },
cannam@85: 		{	1,	{ 0.011111111111 },		132301,		1,	1.0 },
cannam@85: 		{	1,	{ 0.111111111111 },		92301,		1,	1.0 },
cannam@85: 		{	1,	{ 0.011111111111 },		26461,		1,	1.0 },
cannam@85: 		{	1,	{ 0.011111111111 },		13231,		1,	1.0 },
cannam@85: 		{	1,	{ 0.011111111111 },		44101,		1,	1.0 },
cannam@85: 		{	2,	{ 0.311111, 0.49 },		78199,		2,	1.0 },
cannam@85: 		{	2,	{ 0.011111, 0.49 },		12345,		1,	0.5 },
cannam@85: 		{	2,	{ 0.0123456, 0.4 },		20143,		1,	0.5 },
cannam@85: 		{	2,	{ 0.0111111, 0.4 },		26461,		1,	0.5 },
cannam@85: 		{	1,	{ 0.381111111111 },		58661,		1,	1.0 }
cannam@85: 		} ; /* snr_test */
cannam@85: 	static char command [256] ;
cannam@85: 
cannam@85: 	double snr, worst_snr = 500.0 ;
cannam@85: 	int k , retval, sample_count ;
cannam@85: 
cannam@85: 	*output_samples = 0 ;
cannam@85: 
cannam@85: 	for (k = 0 ; k < ARRAY_LEN (snr_test) ; k++)
cannam@85: 	{	remove ("source.wav") ;
cannam@85: 		remove ("destination.wav") ;
cannam@85: 
cannam@85: 		if (verbose)
cannam@85: 			printf ("       SNR test #%d : ", k) ;
cannam@85: 		fflush (stdout) ;
cannam@85: 		generate_source_wav ("source.wav", snr_test [k].freqs, snr_test [k].freq_count, prog->format) ;
cannam@85: 
cannam@85: 		snprintf (command, sizeof (command), prog->convert_cmd, snr_test [k].output_samplerate) ;
cannam@85: 		SAFE_STRNCAT (command, " >/dev/null 2>&1", sizeof (command)) ;
cannam@85: 		if ((retval = system (command)) != 0)
cannam@85: 			printf ("system returned %d\n", retval) ;
cannam@85: 
cannam@85: 		snr = measure_destination_wav ("destination.wav", &sample_count, snr_test->pass_band_peaks) ;
cannam@85: 
cannam@85: 		*output_samples += sample_count ;
cannam@85: 
cannam@85: 		if (fabs (snr) < fabs (worst_snr))
cannam@85: 			worst_snr = fabs (snr) ;
cannam@85: 
cannam@85: 		if (verbose)
cannam@85: 			printf ("%6.2f dB\n", snr) ;
cannam@85: 		} ;
cannam@85: 
cannam@85: 	return worst_snr ;
cannam@85: } /* measure_snr */
cannam@85: 
cannam@85: /*------------------------------------------------------------------------------
cannam@85: */
cannam@85: 
cannam@85: static double
cannam@85: measure_destination_peak (const char *filename)
cannam@85: {	static float data [2 * BUFFER_LEN] ;
cannam@85: 	SNDFILE		*sndfile ;
cannam@85: 	SF_INFO		sfinfo ;
cannam@85: 	double		peak = 0.0 ;
cannam@85: 	int			k = 0 ;
cannam@85: 
cannam@85: 	if ((sndfile = sf_open (filename, SFM_READ, &sfinfo)) == NULL)
cannam@85: 	{	printf ("Line %d : failed to open file %s\n", __LINE__, filename) ;
cannam@85: 		exit (1) ;
cannam@85: 		} ;
cannam@85: 
cannam@85: 	if (sfinfo.channels != 1)
cannam@85: 	{	printf ("Line %d : bad channel count.\n", __LINE__) ;
cannam@85: 		exit (1) ;
cannam@85: 		} ;
cannam@85: 
cannam@85: 	if (sfinfo.frames > ARRAY_LEN (data) + 4 || sfinfo.frames < ARRAY_LEN (data) - 100)
cannam@85: 	{	printf ("Line %d : bad frame count (got %d, expected %d).\n", __LINE__, (int) sfinfo.frames, ARRAY_LEN (data)) ;
cannam@85: 		exit (1) ;
cannam@85: 		} ;
cannam@85: 
cannam@85: 	if (sf_read_float (sndfile, data, sfinfo.frames) != sfinfo.frames)
cannam@85: 	{	printf ("Line %d : bad read.\n", __LINE__) ;
cannam@85: 		exit (1) ;
cannam@85: 		} ;
cannam@85: 
cannam@85: 	sf_close (sndfile) ;
cannam@85: 
cannam@85: 	for (k = 0 ; k < (int) sfinfo.frames ; k++)
cannam@85: 		if (fabs (data [k]) > peak)
cannam@85: 			peak = fabs (data [k]) ;
cannam@85: 
cannam@85: 	return peak ;
cannam@85: } /* measure_destination_peak */
cannam@85: 
cannam@85: static double
cannam@85: find_attenuation (double freq, const RESAMPLE_PROG *prog, int verbose)
cannam@85: {	static char	command [256] ;
cannam@85: 	double	output_peak ;
cannam@85: 	int		retval ;
cannam@85: 	char	*filename ;
cannam@85: 
cannam@85: 	filename = "destination.wav" ;
cannam@85: 
cannam@85: 	generate_source_wav ("source.wav", &freq, 1, prog->format) ;
cannam@85: 
cannam@85: 	remove (filename) ;
cannam@85: 
cannam@85: 	snprintf (command, sizeof (command), prog->convert_cmd, 88189) ;
cannam@85: 	SAFE_STRNCAT (command, " >/dev/null 2>&1", sizeof (command)) ;
cannam@85: 	if ((retval = system (command)) != 0)
cannam@85: 		printf ("system returned %d\n", retval) ;
cannam@85: 
cannam@85: 	output_peak = measure_destination_peak (filename) ;
cannam@85: 
cannam@85: 	if (verbose)
cannam@85: 		printf ("        freq : %f     peak : %f\n", freq, output_peak) ;
cannam@85: 
cannam@85: 	return fabs (20.0 * log10 (output_peak)) ;
cannam@85: } /* find_attenuation */
cannam@85: 
cannam@85: static double
cannam@85: bandwidth_test (const RESAMPLE_PROG *prog, int verbose)
cannam@85: {	double	f1, f2, a1, a2 ;
cannam@85: 	double	freq, atten ;
cannam@85: 
cannam@85: 	f1 = 0.35 ;
cannam@85: 	a1 = find_attenuation (f1, prog, verbose) ;
cannam@85: 
cannam@85: 	f2 = 0.49999 ;
cannam@85: 	a2 = find_attenuation (f2, prog, verbose) ;
cannam@85: 
cannam@85: 
cannam@85: 	if (fabs (a1) < 1e-2 && a2 < 3.0)
cannam@85: 		return -1.0 ;
cannam@85: 
cannam@85: 	if (a1 > 3.0 || a2 < 3.0)
cannam@85: 	{	printf ("\n\nLine %d : cannot bracket 3dB point.\n\n", __LINE__) ;
cannam@85: 		exit (1) ;
cannam@85: 		} ;
cannam@85: 
cannam@85: 	while (a2 - a1 > 1.0)
cannam@85: 	{	freq = f1 + 0.5 * (f2 - f1) ;
cannam@85: 		atten = find_attenuation (freq, prog, verbose) ;
cannam@85: 
cannam@85: 		if (atten < 3.0)
cannam@85: 		{	f1 = freq ;
cannam@85: 			a1 = atten ;
cannam@85: 			}
cannam@85: 		else
cannam@85: 		{	f2 = freq ;
cannam@85: 			a2 = atten ;
cannam@85: 			} ;
cannam@85: 		} ;
cannam@85: 
cannam@85: 	freq = f1 + (3.0 - a1) * (f2 - f1) / (a2 - a1) ;
cannam@85: 
cannam@85: 	return 200.0 * freq ;
cannam@85: } /* bandwidth_test */
cannam@85: 
cannam@85: static void
cannam@85: measure_program (const RESAMPLE_PROG *prog, int verbose)
cannam@85: {	double	snr, bandwidth, conversion_rate ;
cannam@85: 	int		output_samples ;
cannam@85: 	struct	tms	time_data ;
cannam@85: 	time_t	time_now ;
cannam@85: 
cannam@85: 	printf ("\n  Machine : %s\n", get_machine_details ()) ;
cannam@85: 	time_now = time (NULL) ;
cannam@85: 	printf ("  Date    : %s", ctime (&time_now)) ;
cannam@85: 
cannam@85: 	get_version_string (prog) ;
cannam@85: 	printf ("  Program : %s\n", version_string) ;
cannam@85: 	printf ("  Command : %s\n\n", prog->convert_cmd) ;
cannam@85: 
cannam@85: 	snr = measure_snr (prog, &output_samples, verbose) ;
cannam@85: 
cannam@85: 	printf ("  Worst case SNR     : %6.2f dB\n", snr) ;
cannam@85: 
cannam@85: 	times (&time_data) ;
cannam@85: 
cannam@85: 	conversion_rate = (1.0 * output_samples * sysconf (_SC_CLK_TCK)) / time_data.tms_cutime ;
cannam@85: 
cannam@85: 	printf ("  Conversion rate    : %5.0f samples/sec\n", conversion_rate) ;
cannam@85: 
cannam@85: 	bandwidth = bandwidth_test (prog, verbose) ;
cannam@85: 
cannam@85: 	if (bandwidth > 0.0)
cannam@85: 		printf ("  Measured bandwidth : %5.2f %%\n", bandwidth) ;
cannam@85: 	else
cannam@85: 		printf ("  Could not measure bandwidth (no -3dB point found).\n") ;
cannam@85: 
cannam@85: 	return ;
cannam@85: } /* measure_program */
cannam@85: 
cannam@85: /*##############################################################################
cannam@85: */
cannam@85: 
cannam@85: #else
cannam@85: 
cannam@85: int
cannam@85: main (void)
cannam@85: {	puts ("\n"
cannam@85: 		"****************************************************************\n"
cannam@85: 		" This program has been compiled without :\n"
cannam@85: 		"	1) FFTW (http://www.fftw.org/).\n"
cannam@85: 		"	2) libsndfile (http://www.zip.com.au/~erikd/libsndfile/).\n"
cannam@85: 		" Without these two libraries there is not much it can do.\n"
cannam@85: 		"****************************************************************\n") ;
cannam@85: 
cannam@85: 	return 0 ;
cannam@85: } /* main */
cannam@85: 
cannam@85: #endif /* (HAVE_FFTW3 && HAVE_SNDFILE) */
cannam@85: