comparison src/libsndfile-1.0.25/examples/sndfile-to-text.c @ 0:c7265573341e

Import initial set of sources

+/*
+** Copyright (C) 2008-2011 Erik de Castro Lopo <[e-mail]>
+**
+** All rights reserved.
+**
+** Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions are
+** met:
+**
+**     * Redistributions of source code must retain the above copyright
+**       notice, this list of conditions and the following disclaimer.
+**     * Redistributions in binary form must reproduce the above copyright
+**       notice, this list of conditions and the following disclaimer in
+**       the documentation and/or other materials provided with the
+**       distribution.
+**     * Neither the author nor the names of any contributors may be used
+**       to endorse or promote products derived from this software without
+**       specific prior written permission.
+**
+** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+** TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+** PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+** CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+** EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+** PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+** OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+** WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+** OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+** ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <ctype.h>
+
+#include <sndfile.h>
+
+#define	BLOCK_SIZE 512
+
+static void
+print_usage (char *progname)
+{	printf ("\nUsage : %s <input file> <output file>\n", progname) ;
+	puts ("\n"
+		"    Where the output file will contain a line for each frame\n"
+		"    and a column for each channel.\n"
+		) ;
+
+} /* print_usage */
+
+static void
+convert_to_text (SNDFILE * infile, FILE * outfile, int channels)
+{	float buf [channels * BLOCK_SIZE] ;
+	int k, m, readcount ;
+
+	while ((readcount = sf_readf_float (infile, buf, BLOCK_SIZE)) > 0)
+	{	for (k = 0 ; k < readcount ; k++)
+		{	for (m = 0 ; m < channels ; m++)
+				fprintf (outfile, " % 12.10f", buf [k * channels + m]) ;
+			fprintf (outfile, "\n") ;
+			} ;
+		} ;
+
+	return ;
+} /* convert_to_text */
+
+int
+main (int argc, char * argv [])
+{	char 		*progname, *infilename, *outfilename ;
+	SNDFILE	 	*infile = NULL ;
+	FILE		*outfile = NULL ;
+	SF_INFO	 	sfinfo ;
+
+	progname = strrchr (argv [0], '/') ;
+	progname = progname ? progname + 1 : argv [0] ;
+
+	if (argc != 3)
+	{	print_usage (progname) ;
+		return 1 ;
+		} ;
+
+	infilename = argv [1] ;
+	outfilename = argv [2] ;
+
+	if (strcmp (infilename, outfilename) == 0)
+	{	printf ("Error : Input and output filenames are the same.\n\n") ;
+		print_usage (progname) ;
+		return 1 ;
+		} ;
+
+	if (infilename [0] == '-')
+	{	printf ("Error : Input filename (%s) looks like an option.\n\n", infilename) ;
+		print_usage (progname) ;
+		return 1 ;
+		} ;
+
+	if (outfilename [0] == '-')
+	{	printf ("Error : Output filename (%s) looks like an option.\n\n", outfilename) ;
+		print_usage (progname) ;
+		return 1 ;
+		} ;
+
+	if ((infile = sf_open (infilename, SFM_READ, &sfinfo)) == NULL)
+	{	printf ("Not able to open input file %s.\n", infilename) ;
+		puts (sf_strerror (NULL)) ;
+		return 1 ;
+		} ;
+
+	/* Open the output file. */
+	if ((outfile = fopen (outfilename, "w")) == NULL)
+	{	printf ("Not able to open output file %s : %s\n", outfilename, sf_strerror (NULL)) ;
+		return 1 ;
+		} ;
+
+	fprintf (outfile, "# Converted from file %s.\n", infilename) ;
+	fprintf (outfile, "# Channels %d, Sample rate %d\n", sfinfo.channels, sfinfo.samplerate) ;
+
+	convert_to_text (infile, outfile, sfinfo.channels) ;
+
+	sf_close (infile) ;
+	fclose (outfile) ;
+
+	return 0 ;
+} /* main */
+