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From: izumi@mindseye.berkeley.edu (Izumi Ohzawa)
Newsgroups: comp.sys.next
Subject: Re: converting sound files from sparc -> next
Message-ID: <1991Mar24.224638.24597@agate.berkeley.edu>
Date: 24 Mar 91 22:46:38 GMT
References: <1991Mar24.160634.20050@news.cs.indiana.edu>
Sender: usenet@agate.berkeley.edu (USENET Administrator)
Organization: Univ. of California, Berkeley
Lines: 81

In article <1991Mar24.160634.20050@news.cs.indiana.edu>
  jashley@greatwhite.cs.indiana.edu (J. Michael Ashley) writes:
>
>Hi.  I'm wondering if there is an easy way to convert sound files from the
>format used by Sun Sparcstations to the format used by the NeXT.  Someone
>posted a few weeks ago that all you had to do was change the file suffix
>to .snd, but that didn't work for me.  Does anyone have another suggestion?

You have to prepend a sound header to the Sparc files.  Here's a
hack which does that.

Izumi Ohzawa, izumi@pinoko.berkeley.edu (NeXTmail)

------ au2snd.c -------
/* Program to convert Sun Sparc sound file (*.au) to NeXT sound file (*.snd) */
/* Izumi Ohzawa, 8-14-90 */
/* cc -O -o au2snd au2snd.c -lsys_s */

#include <stdio.h>
#include <sound/sound.h>
#include <sys/stat.h>

main(argc, argv)
int argc;
char *argv[];
{
int filesize, bcnt;
char buff[1024];
SNDSoundStruct sh;
struct stat filestat;
FILE *fpin, *fpout;

	if(argc != 3)
	{
		printf("Usage: au2snd Sparcfile.au NeXTfile.snd\n");
		exit(1);
	}
	if(stat(argv[1], &filestat))
	{
		printf("Can't get stat for file: %s\n", argv[1]);
		exit(2);
	}
	else
		filesize = filestat.st_size;

	fpin = fopen(argv[1], "r");
	if(fpin == NULL)
	{
		printf("Can't open %s\n", argv[1]);
		exit(1);
	}
	fpout = fopen(argv[2], "w");
	if(fpout == NULL)
	{
		printf("Can't open %s\n", argv[2]);
		exit(1);
	}

	sh.magic = SND_MAGIC;
	sh.dataLocation = sizeof(SNDSoundStruct);
	sh.dataSize = filesize;
	sh.dataFormat = SND_FORMAT_MULAW_8;
	sh.samplingRate = SND_RATE_CODEC;
	sh.channelCount = 1;
	bzero(sh.info, 4);

	fwrite((void *)&sh, sizeof(SNDSoundStruct), 1, fpout);

	while((bcnt = fread((void *)buff, 1, sizeof(buff), fpin)) > 0)
		fwrite((void *)buff, 1, (size_t)bcnt, fpout);
	fclose(fpin);
	fclose(fpout);
	exit(0);
}

------ end of au2snd.c ------

Izumi Ohzawa             [ $@Bg_78^=;(J ]
USMail: University of California, 360 Minor Hall, Berkeley, CA 94720
Telephone: (415) 642-6440             Fax:  (415) 642-3323
Internet: izumi@violet.berkeley.edu   NeXTmail: izumi@pinoko.berkeley.edu