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Annotation of src/usr.bin/aucat/aucat.c, Revision 1.2

1.2     ! kstailey    1: /*     $OpenBSD: aucat.c,v 1.1 1997/01/02 22:12:27 kstailey Exp $      */
1.1       kstailey    2: /*
                      3:  * Copyright (c) 1997 Kenneth Stailey.  All rights reserved.
                      4:  *
                      5:  * Redistribution and use in source and binary forms, with or without
                      6:  * modification, are permitted provided that the following conditions
                      7:  * are met:
                      8:  * 1. Redistributions of source code must retain the above copyright
                      9:  *    notice, this list of conditions and the following disclaimer.
                     10:  * 2. Redistributions in binary form must reproduce the above copyright
                     11:  *    notice, this list of conditions and the following disclaimer in the
                     12:  *    documentation and/or other materials provided with the distribution.
                     13:  * 3. All advertising materials mentioning features or use of this software
                     14:  *    must display the following acknowledgement:
                     15:  *     This product includes software developed by Kenneth Stailey.
                     16:  * 4. The name of the author may not be used to endorse or promote products
                     17:  *    derived from this software without specific prior written permission.
                     18:  *
                     19:  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
                     20:  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
                     21:  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
                     22:  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
                     23:  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
                     24:  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
                     25:  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
                     26:  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
                     27:  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
                     28:  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
                     29:  */
                     30:
                     31: #include <sys/types.h>
                     32: #include <machine/endian.h>
                     33: #include <fcntl.h>
                     34: #include <stdio.h>
                     35: #include <unistd.h>
                     36:
                     37: /*
                     38:  * aucat: concatinate and play Sun 8-bit .au files
                     39:  */
                     40:
                     41: /* function playfile: given a file which is positioned at the beginning
                     42:  * of what is assumed to be an .au data stream copy it out to the audio
                     43:  * device.  Return 0 on sucess, -1 on failure.
                     44:  */
                     45: int
                     46: playfile(int fd)
                     47: {
                     48:   static int afd = -1;
                     49:   int rd;
                     50:   char buf[5120];
                     51:
                     52:   if (afd == -1)
                     53:     if ((afd = open("/dev/audio", O_WRONLY)) < 0) {
                     54:       perror("open /dev/audio");
                     55:       return(-1);
                     56:     }
                     57:   while ((rd = read(fd, buf, sizeof(buf))) > 0) {
                     58:     write(afd, buf, rd);
                     59:     if (rd < sizeof(buf))
                     60:       break;
                     61:   }
                     62:
                     63:   return (0);
                     64: }
                     65:
                     66: int
                     67: main(int argc, char **argv)
                     68: {
                     69:   int fd;
                     70:   int argcInc = 0;             /* incrementing version of argc */
                     71:   unsigned long data;
                     72:   char magic[5];
                     73:
                     74:   while (--argc) {
                     75:     ++argcInc;
                     76:     if ((fd = open(argv[argcInc], O_RDONLY)) < 0) {
                     77:       perror("open file");
                     78:       exit(1);
                     79:     }
                     80:
                     81:     read(fd, magic, 4);
                     82:     magic[4] = '\0';
                     83:     if (strcmp(magic, ".snd")) {
                     84:       /* not an .au file, bad header.  Assume raw audio data since that's
                     85:        * what /dev/audio generates by default.
                     86:        */
                     87:       lseek(fd, 0, SEEK_SET);
                     88:     } else {
                     89:       read(fd, &data, sizeof(data));
1.2     ! kstailey   90:       data = htonl(data);
1.1       kstailey   91:       lseek(fd, (off_t)data, SEEK_SET);
                     92:     }
                     93:     if (playfile(fd) < 0)
                     94:       exit(1);
                     95:   }
                     96:   exit(0);
                     97: }