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 "sfconfig.h"
cannam@85: 
cannam@85: #include <stdio.h>
cannam@85: #include <stdlib.h>
cannam@85: #include <string.h>
cannam@85: #include <math.h>
cannam@85: 
cannam@85: #if HAVE_UNISTD_H
cannam@85: #include <unistd.h>
cannam@85: #endif
cannam@85: 
cannam@85: #include <sndfile.h>
cannam@85: 
cannam@85: #include "utils.h"
cannam@85: 
cannam@85: #define	BUFFER_SIZE		(10000)
cannam@85: 
cannam@85: #ifndef		M_PI
cannam@85: #define		M_PI		3.14159265358979323846264338
cannam@85: #endif
cannam@85: 
cannam@85: static	void	dwvw_test (const char *filename, int format, int bit_width) ;
cannam@85: 
cannam@85: int
cannam@85: main (void)
cannam@85: {
cannam@85: 	dwvw_test ("dwvw12.raw", SF_FORMAT_RAW | SF_FORMAT_DWVW_12, 12) ;
cannam@85: 	dwvw_test ("dwvw16.raw", SF_FORMAT_RAW | SF_FORMAT_DWVW_16, 16) ;
cannam@85: 	dwvw_test ("dwvw24.raw", SF_FORMAT_RAW | SF_FORMAT_DWVW_24, 24) ;
cannam@85: 
cannam@85: 	return 0 ;
cannam@85: } /* main */
cannam@85: 
cannam@85: static void
cannam@85: dwvw_test (const char *filename, int format, int bit_width)
cannam@85: {	static	int		write_buf [BUFFER_SIZE] ;
cannam@85: 	static	int		read_buf [BUFFER_SIZE] ;
cannam@85: 
cannam@85: 	SNDFILE	*file ;
cannam@85: 	SF_INFO sfinfo ;
cannam@85: 	double 	value ;
cannam@85: 	int		k, bit_mask ;
cannam@85: 
cannam@85: 	srand (123456) ;
cannam@85: 
cannam@85: 	/* Only want to grab the top bit_width bits. */
cannam@85: 	bit_mask = (-1 << (32 - bit_width)) ;
cannam@85: 
cannam@85: 	print_test_name ("dwvw_test", filename) ;
cannam@85: 
cannam@85: 	sf_info_setup (&sfinfo, format, 44100, 1) ;
cannam@85: 
cannam@85: 	file = test_open_file_or_die (filename, SFM_WRITE, &sfinfo, SF_TRUE, __LINE__) ;
cannam@85: 
cannam@85: 	/* Generate random.frames. */
cannam@85: 	for (k = 0 ; k < BUFFER_SIZE / 2 ; k++)
cannam@85: 	{	value = 0x7FFFFFFF * sin (123.0 / sfinfo.samplerate * 2 * k * M_PI) ;
cannam@85: 		write_buf [k] = bit_mask & lrint (value) ;
cannam@85: 		} ;
cannam@85: 
cannam@85: 	for ( ; k < BUFFER_SIZE ; k++)
cannam@85: 		write_buf [k] = bit_mask & ((rand () << 11) ^ (rand () >> 11)) ;
cannam@85: 
cannam@85: 	sf_write_int (file, write_buf, BUFFER_SIZE) ;
cannam@85: 	sf_close (file) ;
cannam@85: 
cannam@85: 	file = test_open_file_or_die (filename, SFM_READ, &sfinfo, SF_TRUE, __LINE__) ;
cannam@85: 
cannam@85: 	if ((k = sf_read_int (file, read_buf, BUFFER_SIZE)) != BUFFER_SIZE)
cannam@85: 	{	printf ("Error (line %d) : Only read %d/%d.frames.\n", __LINE__, k, BUFFER_SIZE) ;
cannam@85: 		exit (1) ;
cannam@85: 		}
cannam@85: 
cannam@85: 	for (k = 0 ; k < BUFFER_SIZE ; k++)
cannam@85: 	{	if (read_buf [k] != write_buf [k])
cannam@85: 		{	printf ("Error (line %d) : %d != %d at position %d/%d\n", __LINE__,
cannam@85: 				write_buf [k] >> (32 - bit_width), read_buf [k] >> (32 - bit_width),
cannam@85: 				k, BUFFER_SIZE) ;
cannam@85: 			oct_save_int (write_buf, read_buf, BUFFER_SIZE) ;
cannam@85: 			exit (1) ;
cannam@85: 			} ;
cannam@85: 		} ;
cannam@85: 
cannam@85: 	sf_close (file) ;
cannam@85: 
cannam@85: 	unlink (filename) ;
cannam@85: 	printf ("ok\n") ;
cannam@85: 
cannam@85: 	return ;
cannam@85: } /* dwvw_test */
cannam@85: