interpretor/libsndfile-1.0.25/tests/dwvw_test.c

   1 /*
   2 ** Copyright (C) 2002-2011 Erik de Castro Lopo <erikd@mega-nerd.com>
   3 **
   4 ** This program is free software; you can redistribute it and/or modify
   5 ** it under the terms of the GNU General Public License as published by
   6 ** the Free Software Foundation; either version 2 of the License, or
   7 ** (at your option) any later version.
   8 **
   9 ** This program is distributed in the hope that it will be useful,
  10 ** but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 ** GNU General Public License for more details.
  13 **
  14 ** You should have received a copy of the GNU General Public License
  15 ** along with this program; if not, write to the Free Software
  16 ** Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  17 */
  18
  19 #include "sfconfig.h"
  20
  21 #include <stdio.h>
  22 #include <stdlib.h>
  23 #include <string.h>
  24 #include <math.h>
  25
  26 #if HAVE_UNISTD_H
  27 #include <unistd.h>
  28 #endif
  29
  30 #include <sndfile.h>
  31
  32 #include "utils.h"
  33
  34 #define BUFFER_SIZE             (10000)
  35
  36 #ifndef         M_PI
  37 #define         M_PI            3.14159265358979323846264338
  38 #endif
  39
  40 static  void    dwvw_test (const char *filename, int format, int bit_width) ;
  41
  42 int
  43 main (void)
  44 {
  45         dwvw_test ("dwvw12.raw", SF_FORMAT_RAW | SF_FORMAT_DWVW_12, 12) ;
  46         dwvw_test ("dwvw16.raw", SF_FORMAT_RAW | SF_FORMAT_DWVW_16, 16) ;
  47         dwvw_test ("dwvw24.raw", SF_FORMAT_RAW | SF_FORMAT_DWVW_24, 24) ;
  48
  49         return 0 ;
  50 } /* main */
  51
  52 static void
  53 dwvw_test (const char *filename, int format, int bit_width)
  54 {       static  int             write_buf [BUFFER_SIZE] ;
  55         static  int             read_buf [BUFFER_SIZE] ;
  56
  57         SNDFILE *file ;
  58         SF_INFO sfinfo ;
  59         double  value ;
  60         int             k, bit_mask ;
  61
  62         srand (123456) ;
  63
  64         /* Only want to grab the top bit_width bits. */
  65         bit_mask = (-1 << (32 - bit_width)) ;
  66
  67         print_test_name ("dwvw_test", filename) ;
  68
  69         sf_info_setup (&sfinfo, format, 44100, 1) ;
  70
  71         file = test_open_file_or_die (filename, SFM_WRITE, &sfinfo, SF_TRUE, __LINE__) ;
  72
  73         /* Generate random.frames. */
  74         for (k = 0 ; k < BUFFER_SIZE / 2 ; k++)
  75         {       value = 0x7FFFFFFF * sin (123.0 / sfinfo.samplerate * 2 * k * M_PI) ;
  76                 write_buf [k] = bit_mask & lrint (value) ;
  77                 } ;
  78
  79         for ( ; k < BUFFER_SIZE ; k++)
  80                 write_buf [k] = bit_mask & ((rand () << 11) ^ (rand () >> 11)) ;
  81
  82         sf_write_int (file, write_buf, BUFFER_SIZE) ;
  83         sf_close (file) ;
  84
  85         file = test_open_file_or_die (filename, SFM_READ, &sfinfo, SF_TRUE, __LINE__) ;
  86
  87         if ((k = sf_read_int (file, read_buf, BUFFER_SIZE)) != BUFFER_SIZE)
  88         {       printf ("Error (line %d) : Only read %d/%d.frames.\n", __LINE__, k, BUFFER_SIZE) ;
  89                 exit (1) ;
  90                 }
  91
  92         for (k = 0 ; k < BUFFER_SIZE ; k++)
  93         {       if (read_buf [k] != write_buf [k])
  94                 {       printf ("Error (line %d) : %d != %d at position %d/%d\n", __LINE__,
  95                                 write_buf [k] >> (32 - bit_width), read_buf [k] >> (32 - bit_width),
  96                                 k, BUFFER_SIZE) ;
  97                         oct_save_int (write_buf, read_buf, BUFFER_SIZE) ;
  98                         exit (1) ;
  99                         } ;
 100                 } ;
 101
 102         sf_close (file) ;
 103
 104         unlink (filename) ;
 105         printf ("ok\n") ;
 106
 107         return ;
 108 } /* dwvw_test */
 109