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Sample Programs from NeXSTEP 3.3

/*
 * converttest.c - an example conversion that takes an mulaw codec file
 * as input and writes a new file (11 times bigger) that is the equivalent
 * 22kHz stereo 16 bit linear soundfile
 */

#import <sound/sound.h>
#import <stdio.h>

check_error(int err)
{
    if (err) {
	printf("Error : %s\n",SNDSoundError(err));
	exit(1);
    }
    return err;
}

main (int argc, char *argv[])
{
    int err;
    SNDSoundStruct *s1, *s2;
    SNDSoundStruct header = {
	SND_MAGIC, 0, 0, SND_FORMAT_LINEAR_16, (int)SND_RATE_LOW, 2, "" };

    check_error(argc != 3);
    
    err = SNDReadSoundfile(argv[1],&s1);
    check_error(err);
    s2 = &header;
    err = SNDConvertSound(s1,&s2);
    check_error(err);
    err = SNDWriteSoundfile(argv[2],s2);
    check_error(err);
    exit(0);
}

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