--- /dev/null
+/*
+** Copyright (C) 2002-2011 Erik de Castro Lopo <erikd@mega-nerd.com>
+**
+** This program is free software; you can redistribute it and/or modify
+** it under the terms of the GNU General Public License as published by
+** the Free Software Foundation; either version 2 of the License, or
+** (at your option) any later version.
+**
+** This program is distributed in the hope that it will be useful,
+** but WITHOUT ANY WARRANTY; without even the implied warranty of
+** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+** GNU General Public License for more details.
+**
+** You should have received a copy of the GNU General Public License
+** along with this program; if not, write to the Free Software
+** Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+*/
+
+#include "sfconfig.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <math.h>
+
+#if HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+
+#include <sndfile.h>
+
+#include "utils.h"
+
+#define BUFFER_SIZE (10000)
+
+#ifndef M_PI
+#define M_PI 3.14159265358979323846264338
+#endif
+
+static void dwvw_test (const char *filename, int format, int bit_width) ;
+
+int
+main (void)
+{
+ dwvw_test ("dwvw12.raw", SF_FORMAT_RAW | SF_FORMAT_DWVW_12, 12) ;
+ dwvw_test ("dwvw16.raw", SF_FORMAT_RAW | SF_FORMAT_DWVW_16, 16) ;
+ dwvw_test ("dwvw24.raw", SF_FORMAT_RAW | SF_FORMAT_DWVW_24, 24) ;
+
+ return 0 ;
+} /* main */
+
+static void
+dwvw_test (const char *filename, int format, int bit_width)
+{ static int write_buf [BUFFER_SIZE] ;
+ static int read_buf [BUFFER_SIZE] ;
+
+ SNDFILE *file ;
+ SF_INFO sfinfo ;
+ double value ;
+ int k, bit_mask ;
+
+ srand (123456) ;
+
+ /* Only want to grab the top bit_width bits. */
+ bit_mask = (-1 << (32 - bit_width)) ;
+
+ print_test_name ("dwvw_test", filename) ;
+
+ sf_info_setup (&sfinfo, format, 44100, 1) ;
+
+ file = test_open_file_or_die (filename, SFM_WRITE, &sfinfo, SF_TRUE, __LINE__) ;
+
+ /* Generate random.frames. */
+ for (k = 0 ; k < BUFFER_SIZE / 2 ; k++)
+ { value = 0x7FFFFFFF * sin (123.0 / sfinfo.samplerate * 2 * k * M_PI) ;
+ write_buf [k] = bit_mask & lrint (value) ;
+ } ;
+
+ for ( ; k < BUFFER_SIZE ; k++)
+ write_buf [k] = bit_mask & ((rand () << 11) ^ (rand () >> 11)) ;
+
+ sf_write_int (file, write_buf, BUFFER_SIZE) ;
+ sf_close (file) ;
+
+ file = test_open_file_or_die (filename, SFM_READ, &sfinfo, SF_TRUE, __LINE__) ;
+
+ if ((k = sf_read_int (file, read_buf, BUFFER_SIZE)) != BUFFER_SIZE)
+ { printf ("Error (line %d) : Only read %d/%d.frames.\n", __LINE__, k, BUFFER_SIZE) ;
+ exit (1) ;
+ }
+
+ for (k = 0 ; k < BUFFER_SIZE ; k++)
+ { if (read_buf [k] != write_buf [k])
+ { printf ("Error (line %d) : %d != %d at position %d/%d\n", __LINE__,
+ write_buf [k] >> (32 - bit_width), read_buf [k] >> (32 - bit_width),
+ k, BUFFER_SIZE) ;
+ oct_save_int (write_buf, read_buf, BUFFER_SIZE) ;
+ exit (1) ;
+ } ;
+ } ;
+
+ sf_close (file) ;
+
+ unlink (filename) ;
+ printf ("ok\n") ;
+
+ return ;
+} /* dwvw_test */
+