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/****************************************************************************
*
* Programs for processing sound files in raw- or WAV-format.
* -- Merge two mono WAV-files to one stereo WAV-file.
*
* Name: stereorize.c
* Version: 1.1
* Author: Mark Roberts <mark@manumark.de>
* Michael Labuschke <michael@labuschke.de>
*
****************************************************************************/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <time.h>
#include <assert.h>
#include "frame.h"
static char *Version = "stereorize 1.1, November 5th 2000";
static char *Usage =
"Usage: stereorize [options] infile-left infile-right outfile\n\n"
"Example:\n"
" stereorize left.wav right.wav stereo.wav -h\n\n"
"Creates stereo.wav (with WAV-header, option -h) from data in mono files\n"
"left.wav and right.wav.\n"
;
int main( int argcount, char *args[])
{
int i, k[2], maxk, stdin_in_use=FALSE;
short *leftsample, *rightsample, *stereosample;
FILE *channel[2];
char *filename[2], *tempname;
version = Version;
usage = Usage;
channel[0] = NULL;
channel[1] = NULL;
parseargs( argcount, args, NOFILES | NOCOMPLAIN);
for (i = 0; i < 2; i++)
{
filename[i] = parsefilearg( argcount, args);
if (filename[i] == NULL)
argerrornum( NULL, ME_NOTENOUGHFILES);
if (strcmp (filename[i], "-") == 0)
{
if (stdin_in_use)
argerrortxt( filename[i] + 1,
"Cannot use <stdin> for both input files");
filename[i] = "<stdin>";
channel[i] = stdin;
stdin_in_use = TRUE;
}
else
{
channel[i] = fopen(filename[i], "rb");
}
if (channel[i] == NULL)
fatalerror( "Error opening input file '%s': %s\n", filename[i],strerror(errno));
else
inform("Using file '%s' as input\n", filename[i]);
}
for (i = 0; i < 2; i++)
{
assert ( channel[i] != NULL);
readwavheader( channel[i]);
if (iswav && channels != 1)
inform("Warning: '%s' is no mono file\n", filename[i]);
}
outfilename = parsefilearg( argcount, args);
if (outfilename == NULL) argerrornum( NULL, ME_NOOUTFILE);
if (strcmp (outfilename, "-") == 0)
{
outfilename = "<stdout>";
out = stdout;
}
else
{
out = fopen(outfilename, "wb");
}
if (out == NULL)
fatalerror( "Error opening output file '%s': %s\n", outfilename,strerror(errno));
else
inform("Using file '%s' as output\n", outfilename);
if ((tempname = parsefilearg( argcount, args)) != NULL)
argerrornum( tempname, ME_TOOMANYFILES);
checknoargs(argcount, args); /* Check that no arguments are left */
leftsample = malloc( sizeof(*leftsample) * BUFFSIZE);
rightsample = malloc( sizeof(*leftsample) * BUFFSIZE);
stereosample = malloc( sizeof(*leftsample) * 2 * BUFFSIZE);
if (leftsample == NULL || rightsample == NULL || stereosample == NULL)
fatalperror ("");
channels = 2; /* Output files are stereo */
if (wavout)
{
if ((strcmp(outfilename,"<stdout>")!=0) && (fseek( out, 0, SEEK_SET) != 0))
fatalerror("Couldn't navigate output file '%s': %s\n",outfilename, strerror(errno));
makewavheader();
}
startstopwatch();
while (TRUE)
{
maxk = 0;
for (i = 0; i < 2; i++)
{
k[i] = fread(i==0? leftsample : rightsample,
sizeof(*leftsample),
BUFFSIZE,
channel[i]);
if (k[i] == -1)
fatalerror("Error reading file '%s': %s\n", filename[i],strerror(errno));
if (k[i] > maxk)
maxk = k[i];
}
if (maxk == 0)
myexit (0);
/*-------------------------------------------------*
* First the left channel as far as it goes ... *
*-------------------------------------------------*/
for (i = 0; i < k[0]; i++)
stereosample[2 * i] = leftsample[i];
/*-------------------------------------------------*
* ... and fill up till the end of this buffer. *
*-------------------------------------------------*/
for (; i < maxk; i++)
stereosample[2 * i] = 0;
/*-------------------------------------------------*
* Next the right channel as far as it goes ... *
*-------------------------------------------------*/
for (i = 0; i < k[1]; i++)
stereosample[2 * i + 1] = rightsample[i];
/*-------------------------------------------------*
* ... and fill up till the end of this buffer. *
*-------------------------------------------------*/
for (; i < maxk; i++)
stereosample[2 * i + 1] = 0;
if (!fwrite(stereosample, sizeof(*leftsample), 2 * maxk, out)) {
fatalerror("Error writing to file '%s': %s\n",
outfilename, strerror(errno));
}
}
/* That was an endless loop. This point is never reached. */
free(leftsample);
free(rightsample);
free(stereosample);
}
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