comparison src/libsndfile-1.0.25/tests/virtual_io_test.c @ 0:c7265573341e

Import initial set of sources

+/*
+** Copyright (C) 1999-2011 Erik de Castro Lopo <[e-mail]>
+**
+** 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 */
+