stereorize.c File Reference

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <time.h>
#include <assert.h>
#include "frame.h"

Include dependency graph for stereorize.c:

Go to the source code of this file.

Functions
int	main (int argcount, char *args[])

Variables
static char *	Usage
static char *	Version = "stereorize 1.1, November 5th 2000"

Function Documentation

main()

int main	(	int	argcount,
		char *	args[]
	)

Definition at line 36 of file stereorize.c.

References argerrornum(), argerrortxt(), BUFFSIZE, channels, checknoargs(), errno, FALSE, fatalerror(), fatalperror(), free(), inform(), iswav, makewavheader(), malloc(), ME_NOOUTFILE, ME_NOTENOUGHFILES, ME_TOOMANYFILES, myexit(), NOCOMPLAIN, NOFILES, NULL, out, outfilename, parseargs(), parsefilearg(), readwavheader(), startstopwatch(), TRUE, Usage, usage, Version, version, and wavout.

{
   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);
}

Variable Documentation

Usage

char* Usage

static

Definition at line 26 of file stereorize.c.

Referenced by main().

Version

char* Version = "stereorize 1.1, November 5th 2000"

static

Definition at line 25 of file stereorize.c.

Referenced by main().