/*    A cheap command to play sample files to the D/A's.    The sample files should have no headers. They can be    eight or sixteen bits, with one or two channels.     Sample rate is eigher 44.1 or 22.05.    NOTE: samples brought from the VAX may have byte order    reversed. Use "dd conv=swab" to fix this.    William Walker, University of Illinois, 27 January 1989    (walker@m.cs.uiuc.edu)*/#include <stdio.h>#include <sound/sound.h>#define THESIZE 3000000#include "args.h"#define	TAG	9839283main(argc, argv)char **argv;{    int srate = SND_RATE_LOW;    int nchannels = 1;    int again = 1;    int i;    SNDSoundStruct *cow;    FILE *data;        ARGLOOP        FLAGARG('h')	srate = SND_RATE_HIGH;		ENDFLAGARG        FLAGARG('s')	nchannels = 2;			ENDFLAGARG        STRINGARG('r')	srate = atoi(p);		ENDSTRINGARG        FLAGARG('o')	again = 0;			ENDFLAGARG        BADARG            fprintf(stderr, "unknown option %c\n", *p);            goto error;        ENDBADARG    ENDARGLOOP       if (argc != 1) goto error;  cow = (SNDSoundStruct *) malloc(THESIZE);  /* these fields should probably be invariant: */  cow->magic = SND_MAGIC;  cow->dataLocation = sizeof(SNDSoundStruct);  cow->dataSize = 0;  cow->dataFormat = SND_FORMAT_LINEAR_16;  cow->samplingRate = srate;  cow->channelCount = nchannels;  printf("%d Hz sample rate,  %d channels\n",    cow->samplingRate,    nchannels);  do {    data = fopen(argv[0],"r");    if (data == NULL) { printf("play: fopen error\n"); exit(1); }    printf("Read %d bytes\n",cow->dataSize = fread((char *)cow+sizeof(SNDSoundStruct),1,THESIZE-sizeof(SNDSoundStruct),data));    fclose(data);      /* printf("Reserve sound for playing (%d)\n",SNDReserve()); */      printf("Play (%d)\n", SNDStartPlaying(cow,TAG,0,0,(SNDNotificationFun)NULL,(SNDNotificationFun)NULL));      printf("Wait for played sound (%d)\n",SNDWait(TAG));      /* printf("Query played sound (%d)\n",SNDQueryPlayedSound()); */      /* printf("Unreserve sound for playing (%d)\n",SNDUnreserveSoundForPlaying()); */    if(again) {        char line[100];        printf("Again? [y] ");        gets(line);        if(line[0] != 'y' && line[0] != 'Y' && line[0] != '\0')            again = 0;    }  } while( again );  exit(0);error:    fprintf(stderr, "\nUsage: play [ -h ] [ -s ] [ -o ] file\n\n");    fprintf(stderr, "  -h   44.1KHz sample rate (default 22.1KHz)\n");    fprintf(stderr, "  -s   stereo (default mono)\n");    fprintf(stderr, "  -o   play only once (default asks to play again)\n");    fprintf(stderr, "\n");    exit(1);}