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/*
** Copyright (C) 1999-2011 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 <fcntl.h>
#include <math.h>
#include <string.h>
#include <errno.h>
#include <sys/stat.h>
#include <sndfile.h>
#include "utils.h"
static void vio_test (const char *fname, int format) ;
int
main (void)
{
vio_test ("vio_pcm16.wav", SF_FORMAT_WAV | SF_FORMAT_PCM_16) ;
vio_test ("vio_pcm24.aiff", SF_FORMAT_AIFF | SF_FORMAT_PCM_24) ;
vio_test ("vio_float.au", SF_FORMAT_AU | SF_FORMAT_FLOAT) ;
vio_test ("vio_pcm24.paf", SF_FORMAT_PAF | SF_FORMAT_PCM_24) ;
return 0 ;
} /* main */
/*==============================================================================
*/
typedef struct
{ sf_count_t offset, length ;
unsigned char data [16 * 1024] ;
} VIO_DATA ;
static sf_count_t
vfget_filelen (void *user_data)
{ VIO_DATA *vf = (VIO_DATA *) user_data ;
return vf->length ;
} /* vfget_filelen */
static sf_count_t
vfseek (sf_count_t offset, int whence, void *user_data)
{ VIO_DATA *vf = (VIO_DATA *) user_data ;
switch (whence)
{ case SEEK_SET :
vf->offset = offset ;
break ;
case SEEK_CUR :
vf->offset = vf->offset + offset ;
break ;
case SEEK_END :
vf->offset = vf->length + offset ;
break ;
default :
break ;
} ;
return vf->offset ;
} /* vfseek */
static sf_count_t
vfread (void *ptr, sf_count_t count, void *user_data)
{ VIO_DATA *vf = (VIO_DATA *) user_data ;
/*
** This will brack badly for files over 2Gig in length, but
** is sufficient for testing.
*/
if (vf->offset + count > vf->length)
count = vf->length - vf->offset ;
memcpy (ptr, vf->data + vf->offset, count) ;
vf->offset += count ;
return count ;
} /* vfread */
static sf_count_t
vfwrite (const void *ptr, sf_count_t count, void *user_data)
{ VIO_DATA *vf = (VIO_DATA *) user_data ;
/*
** This will break badly for files over 2Gig in length, but
** is sufficient for testing.
*/
if (vf->offset >= SIGNED_SIZEOF (vf->data))
return 0 ;
if (vf->offset + count > SIGNED_SIZEOF (vf->data))
count = sizeof (vf->data) - vf->offset ;
memcpy (vf->data + vf->offset, ptr, (size_t) count) ;
vf->offset += count ;
if (vf->offset > vf->length)
vf->length = vf->offset ;
return count ;
} /* vfwrite */
static sf_count_t
vftell (void *user_data)
{ VIO_DATA *vf = (VIO_DATA *) user_data ;
return vf->offset ;
} /* vftell */
/*==============================================================================
*/
static void
gen_short_data (short * data, int len, int start)
{ int k ;
for (k = 0 ; k < len ; k++)
data [k] = start + k ;
} /* gen_short_data */
static void
check_short_data (short * data, int len, int start, int line)
{ int k ;
for (k = 0 ; k < len ; k++)
if (data [k] != start + k)
{ printf ("\n\nLine %d : data [%d] = %d (should be %d).\n\n", line, k, data [k], start + k) ;
exit (1) ;
} ;
} /* gen_short_data */
/*------------------------------------------------------------------------------
*/
static void
vio_test (const char *fname, int format)
{ static VIO_DATA vio_data ;
static short data [256] ;
SF_VIRTUAL_IO vio ;
SNDFILE * file ;
SF_INFO sfinfo ;
print_test_name ("virtual i/o test", fname) ;
/* Set up pointers to the locally defined functions. */
vio.get_filelen = vfget_filelen ;
vio.seek = vfseek ;
vio.read = vfread ;
vio.write = vfwrite ;
vio.tell = vftell ;
/* Set virtual file offset and length to zero. */
vio_data.offset = 0 ;
vio_data.length = 0 ;
memset (&sfinfo, 0, sizeof (sfinfo)) ;
sfinfo.format = format ;
sfinfo.channels = 2 ;
sfinfo.samplerate = 44100 ;
if ((file = sf_open_virtual (&vio, SFM_WRITE, &sfinfo, &vio_data)) == NULL)
{ printf ("\n\nLine %d : sf_open_write failed with error : ", __LINE__) ;
fflush (stdout) ;
puts (sf_strerror (NULL)) ;
exit (1) ;
} ;
if (vfget_filelen (&vio_data) < 0)
{ printf ("\n\nLine %d : vfget_filelen returned negative length.\n\n", __LINE__) ;
exit (1) ;
} ;
gen_short_data (data, ARRAY_LEN (data), 0) ;
sf_write_short (file, data, ARRAY_LEN (data)) ;
gen_short_data (data, ARRAY_LEN (data), 1) ;
sf_write_short (file, data, ARRAY_LEN (data)) ;
gen_short_data (data, ARRAY_LEN (data), 2) ;
sf_write_short (file, data, ARRAY_LEN (data)) ;
sf_close (file) ;
/* Now test read. */
memset (&sfinfo, 0, sizeof (sfinfo)) ;
vio_data.offset = 0 ;
if ((file = sf_open_virtual (&vio, SFM_READ, &sfinfo, &vio_data)) == NULL)
{ printf ("\n\nLine %d : sf_open_write failed with error : ", __LINE__) ;
fflush (stdout) ;
puts (sf_strerror (NULL)) ;
dump_data_to_file (fname, vio_data.data, vio_data.length) ;
exit (1) ;
} ;
sf_read_short (file, data, ARRAY_LEN (data)) ;
check_short_data (data, ARRAY_LEN (data), 0, __LINE__) ;
sf_read_short (file, data, ARRAY_LEN (data)) ;
check_short_data (data, ARRAY_LEN (data), 1, __LINE__) ;
sf_read_short (file, data, ARRAY_LEN (data)) ;
check_short_data (data, ARRAY_LEN (data), 2, __LINE__) ;
sf_close (file) ;
puts ("ok") ;
} /* vio_test */
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