command_test.c

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	if (sfinfo.channels != 1)
	{	printf ("Line %d: Incorrect number of channels in file.\n", __LINE__) ;
		exit (1) ;
		} ;

	/* Read double_data and check that it is normalised (ie default). */
	if ((k = sf_read_double (file, double_data, BUFFER_LEN)) != BUFFER_LEN)
	{	printf ("\n\nLine %d: sf_read_double failed with short read (%d ->%d)\n", __LINE__, BUFFER_LEN, k) ;
		exit (1) ;
		} ;

	for (k = 0 ; k < BUFFER_LEN ; k++)
		if (double_data [k] >= 1.0)
		{	printf ("\n\nLine %d: double_data [%d] == %f which is greater than 1.0\n", __LINE__, k, double_data [k]) ;
			exit (1) ;
			} ;

	/* Seek to start of file, turn normalisation off, read double_data and check again. */
	sf_seek (file, 0, SEEK_SET) ;
	sf_command (file, SFC_SET_NORM_DOUBLE, NULL, SF_FALSE) ;

	if ((k = sf_read_double (file, double_data, BUFFER_LEN)) != BUFFER_LEN)
	{	printf ("\n\nLine %d: sf_read_double failed with short read (%d ->%d)\n", __LINE__, BUFFER_LEN, k) ;
		exit (1) ;
		} ;

	for (k = 0 ; k < BUFFER_LEN ; k++)
		if (double_data [k] < 1.0)
		{	printf ("\n\nLine %d: double_data [%d] == %f which is less than 1.0\n", __LINE__, k, double_data [k]) ;
			exit (1) ;
			} ;

	/* Seek to start of file, turn normalisation on, read double_data and do final check. */
	sf_seek (file, 0, SEEK_SET) ;
	sf_command (file, SFC_SET_NORM_DOUBLE, NULL, SF_TRUE) ;

	if ((k = sf_read_double (file, double_data, BUFFER_LEN)) != BUFFER_LEN)
	{	printf ("\n\nLine %d: sf_read_double failed with short read (%d ->%d)\n", __LINE__, BUFFER_LEN, k) ;
		exit (1) ;
		} ;

	for (k = 0 ; k < BUFFER_LEN ; k++)
		if (double_data [k] > 1.0)
		{	printf ("\n\nLine %d: double_data [%d] == %f which is greater than 1.0\n", __LINE__, k, double_data [k]) ;
			exit (1) ;
			} ;


	sf_close (file) ;

	unlink (filename) ;

	printf ("ok\n") ;
} /* double_norm_test */

static	void
format_tests	(void)
{	SF_FORMAT_INFO format_info ;
	SF_INFO		sfinfo ;
	const char	*last_name ;
	int 		k, count ;

	print_test_name ("format_tests", "(null)") ;

	/* Clear out SF_INFO struct and set channels > 0. */
	memset (&sfinfo, 0, sizeof (sfinfo)) ;
	sfinfo.channels = 1 ;

	/* First test simple formats. */

	sf_command (NULL, SFC_GET_SIMPLE_FORMAT_COUNT, &count, sizeof (int)) ;

	if (count < 0 || count > 30)
	{	printf ("Line %d: Weird count.\n", __LINE__) ;
		exit (1) ;
		} ;

	format_info.format = 0 ;
	sf_command (NULL, SFC_GET_SIMPLE_FORMAT, &format_info, sizeof (format_info)) ;

	last_name = format_info.name ;
	for (k = 1 ; k < count ; k ++)
	{	format_info.format = k ;
		sf_command (NULL, SFC_GET_SIMPLE_FORMAT, &format_info, sizeof (format_info)) ;
		if (strcmp (last_name, format_info.name) >= 0)
		{	printf ("\n\nLine %d: format names out of sequence `%s' < `%s'.\n", __LINE__, last_name, format_info.name) ;
			exit (1) ;
			} ;
		sfinfo.format = format_info.format ;

		if (! sf_format_check (&sfinfo))
		{	printf ("\n\nLine %d: sf_format_check failed.\n", __LINE__) ;
			printf ("        Name : %s\n", format_info.name) ;
			printf ("        Format      : 0x%X\n", sfinfo.format) ;
			printf ("        Channels    : 0x%X\n", sfinfo.channels) ;
			printf ("        Sample Rate : 0x%X\n", sfinfo.samplerate) ;
			exit (1) ;
			} ;
		last_name = format_info.name ;
		} ;
	format_info.format = 666 ;
	sf_command (NULL, SFC_GET_SIMPLE_FORMAT, &format_info, sizeof (format_info)) ;

	/* Now test major formats. */
	sf_command (NULL, SFC_GET_FORMAT_MAJOR_COUNT, &count, sizeof (int)) ;

	if (count < 0 || count > 30)
	{	printf ("Line %d: Weird count.\n", __LINE__) ;
		exit (1) ;
		} ;

	format_info.format = 0 ;
	sf_command (NULL, SFC_GET_FORMAT_MAJOR, &format_info, sizeof (format_info)) ;

	last_name = format_info.name ;
	for (k = 1 ; k < count ; k ++)
	{	format_info.format = k ;
		sf_command (NULL, SFC_GET_FORMAT_MAJOR, &format_info, sizeof (format_info)) ;
		if (strcmp (last_name, format_info.name) >= 0)
		{	printf ("\n\nLine %d: format names out of sequence (%d) `%s' < `%s'.\n", __LINE__, k, last_name, format_info.name) ;
			exit (1) ;
			} ;

		last_name = format_info.name ;
		} ;
	format_info.format = 666 ;
	sf_command (NULL, SFC_GET_FORMAT_MAJOR, &format_info, sizeof (format_info)) ;

	/* Now test subtype formats. */
	sf_command (NULL, SFC_GET_FORMAT_SUBTYPE_COUNT, &count, sizeof (int)) ;

	if (count < 0 || count > 30)
	{	printf ("Line %d: Weird count.\n", __LINE__) ;
		exit (1) ;
		} ;

	format_info.format = 0 ;
	sf_command (NULL, SFC_GET_FORMAT_SUBTYPE, &format_info, sizeof (format_info)) ;

	last_name = format_info.name ;
	for (k = 1 ; k < count ; k ++)
	{	format_info.format = k ;
		sf_command (NULL, SFC_GET_FORMAT_SUBTYPE, &format_info, sizeof (format_info)) ;
		} ;
	format_info.format = 666 ;
	sf_command (NULL, SFC_GET_FORMAT_SUBTYPE, &format_info, sizeof (format_info)) ;


	printf ("ok\n") ;
} /* format_tests */

static	void
calc_peak_test (int filetype, const char *filename)
{	SNDFILE		*file ;
	SF_INFO		sfinfo ;
	int			k, format ;
	double		peak ;

	print_test_name ("calc_peak_test", filename) ;

	format = (filetype | SF_FORMAT_PCM_16) ;

	sfinfo.samplerate	= 44100 ;
	sfinfo.format		= format ;
	sfinfo.channels		= 1 ;
	sfinfo.frames		= BUFFER_LEN ;

	/* Create double_data with max value of 0.5. */
	for (k = 0 ; k < BUFFER_LEN ; k++)
		double_data [k] = (k + 1) / (2.0 * BUFFER_LEN) ;

	file = test_open_file_or_die (filename, SFM_WRITE, &sfinfo, SF_TRUE, __LINE__) ;

	test_write_double_or_die (file, 0, double_data, BUFFER_LEN, __LINE__) ;

	sf_close (file) ;

	file = test_open_file_or_die (filename, SFM_READ, &sfinfo, SF_TRUE, __LINE__) ;

	if (sfinfo.format != format)
	{	printf ("Line %d: Returned format incorrect (0x%08X => 0x%08X).\n", __LINE__, format, sfinfo.format) ;
		exit (1) ;
		} ;

	if (sfinfo.frames != BUFFER_LEN)
	{	printf ("\n\nLine %d: Incorrect number of.frames in file. (%d => %ld)\n", __LINE__, BUFFER_LEN, SF_COUNT_TO_LONG (sfinfo.frames)) ;
		exit (1) ;
		} ;

	if (sfinfo.channels != 1)
	{	printf ("Line %d: Incorrect number of channels in file.\n", __LINE__) ;
		exit (1) ;
		} ;

	sf_command (file, SFC_CALC_SIGNAL_MAX, &peak, sizeof (peak)) ;
	if (fabs (peak - (1 << 14)) > 1.0)
	{	printf ("Line %d : Peak value should be %d (is %f).\n", __LINE__, (1 << 14), peak) ;
		exit (1) ;
		} ;

	sf_command (file, SFC_CALC_NORM_SIGNAL_MAX, &peak, sizeof (peak)) ;
	if (fabs (peak - 0.5) > 4e-5)
	{	printf ("Line %d : Peak value should be %f (is %f).\n", __LINE__, 0.5, peak) ;
		exit (1) ;
		} ;

	sf_close (file) ;

	format = (filetype | SF_FORMAT_FLOAT) ;
	sfinfo.samplerate	= 44100 ;
	sfinfo.format		= format ;
	sfinfo.channels		= 1 ;
	sfinfo.frames		= BUFFER_LEN ;

	/* Create double_data with max value of 0.5. */
	for (k = 0 ; k < BUFFER_LEN ; k++)
		double_data [k] = (k + 1) / (2.0 * BUFFER_LEN) ;

	file = test_open_file_or_die (filename, SFM_WRITE, &sfinfo, SF_TRUE, __LINE__) ;

	test_write_double_or_die (file, 0, double_data, BUFFER_LEN, __LINE__) ;

	sf_close (file) ;

	file = test_open_file_or_die (filename, SFM_READ, &sfinfo, SF_TRUE, __LINE__) ;

	if (sfinfo.format != format)
	{	printf ("Line %d: Returned format incorrect (0x%08X => 0x%08X).\n", __LINE__, format, sfinfo.format) ;
		exit (1) ;
		} ;

	if (sfinfo.frames != BUFFER_LEN)
	{	printf ("\n\nLine %d: Incorrect number of.frames in file. (%d => %ld)\n", __LINE__, BUFFER_LEN, SF_COUNT_TO_LONG (sfinfo.frames)) ;
		exit (1) ;
		} ;

	if (sfinfo.channels != 1)
	{	printf ("Line %d: Incorrect number of channels in file.\n", __LINE__) ;
		exit (1) ;
		} ;

	sf_command (file, SFC_CALC_SIGNAL_MAX, &peak, sizeof (peak)) ;
	if (fabs (peak - 0.5) > 1e-5)
	{	printf ("Line %d : Peak value should be %f (is %f).\n", __LINE__, 0.5, peak) ;
		exit (1) ;
		} ;

	sf_command (file, SFC_CALC_NORM_SIGNAL_MAX, &peak, sizeof (peak)) ;
	if (fabs (peak - 0.5) > 1e-5)
	{	printf ("Line %d : Peak value should be %f (is %f).\n", __LINE__, 0.5, peak) ;
		exit (1) ;
		} ;

	sf_close (file) ;

	unlink (filename) ;

	printf ("ok\n") ;
} /* calc_peak_test */

static void
truncate_test (const char *filename, int filetype)
{	SNDFILE 	*file ;
	SF_INFO		sfinfo ;
	sf_count_t	len ;
	int			*int_data ;

	print_test_name ("truncate_test", filename) ;

	sfinfo.samplerate	= 11025 ;
	sfinfo.format		= filetype ;
	sfinfo.channels		= 2 ;

	int_data = (int*) double_data ;

	file = test_open_file_or_die (filename, SFM_RDWR, &sfinfo, SF_TRUE, __LINE__) ;

	test_write_int_or_die (file, 0, int_data, BUFFER_LEN, __LINE__) ;

	len = 100 ;
	if (sf_command (file, SFC_FILE_TRUNCATE, &len, sizeof (len)))
	{	printf ("Line %d: sf_command (SFC_FILE_TRUNCATE) returned error.\n", __LINE__) ;
		exit (1) ;
		} ;

	test_seek_or_die (file, 0, SEEK_CUR, len, 2, __LINE__) ;
	test_seek_or_die (file, 0, SEEK_END, len, 2, __LINE__) ;

	sf_close (file) ;

	unlink (filename) ;
	puts ("ok") ;
} /* truncate_test */