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Annotation of src/usr.bin/aucat/aucat.c, Revision 1.10

1.10    ! ian         1: /*     $OpenBSD: aucat.c,v 1.9 2003/10/20 21:10:19 jmc 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>
1.4       millert    35: #include <stdlib.h>
1.8       david      36: #include <string.h>
1.1       kstailey   37: #include <unistd.h>
1.4       millert    38: #include <err.h>
1.1       kstailey   39:
                     40: /*
1.9       jmc        41:  * aucat: concatenate and play Sun 8-bit .au files
1.1       kstailey   42:  */
1.7       deraadt    43:
                     44: int    playfile(int, char *);
1.1       kstailey   45:
                     46: /* function playfile: given a file which is positioned at the beginning
                     47:  * of what is assumed to be an .au data stream copy it out to the audio
1.5       millert    48:  * device.  Return 0 on success, -1 on failure.
1.1       kstailey   49:  */
                     50: int
1.6       deraadt    51: playfile(int fd, char *dev)
1.1       kstailey   52: {
1.4       millert    53:        static int afd = -1;
                     54:        int rd;
                     55:        char buf[5120];
                     56:
                     57:        if (afd == -1 && (afd = open(dev, O_WRONLY)) < 0) {
                     58:                warn("can't open %s", dev);
                     59:                return(-1);
                     60:        }
                     61:        while ((rd = read(fd, buf, sizeof(buf))) > 0) {
                     62:                write(afd, buf, rd);
                     63:                if (rd < sizeof(buf))
                     64:                        break;
                     65:        }
                     66:
                     67:        return (0);
1.1       kstailey   68: }
                     69:
                     70: int
1.6       deraadt    71: main(int argc, char *argv[])
1.1       kstailey   72: {
1.4       millert    73:        int fd, ch;
                     74:        unsigned long data;
                     75:        char magic[5];
                     76:        char *dev;
                     77:
                     78:        dev = getenv("AUDIODEVICE");
                     79:        if (dev == 0)
                     80:                dev = "/dev/audio";
                     81:
                     82:        while ((ch = getopt(argc, argv, "f:")) != -1) {
                     83:                switch(ch) {
                     84:                case 'f':
                     85:                        dev = optarg;
                     86:                        break;
                     87:                }
                     88:        }
                     89:        argc -= optind;
                     90:        argv += optind;
                     91:
                     92:        while (argc) {
                     93:                if ((fd = open(*argv, O_RDONLY)) < 0)
                     94:                        err(1, "cannot open %s", *argv);
                     95:
                     96:                read(fd, magic, 4);
                     97:                magic[4] = '\0';
                     98:                if (strcmp(magic, ".snd")) {
                     99:                        /*
                    100:                         * not an .au file, bad header.
                    101:                         * Assume raw audio data since that's
                    102:                         * what /dev/audio generates by default.
                    103:                         */
                    104:                        lseek(fd, 0, SEEK_SET);
                    105:                } else {
                    106:                        read(fd, &data, sizeof(data));
                    107:                        data = ntohl(data);
                    108:                        lseek(fd, (off_t)data, SEEK_SET);
                    109:                }
                    110:                if (playfile(fd, dev) < 0)
                    111:                        exit(1);
1.10    ! ian       112:                (void) close(fd);
1.4       millert   113:                argc--;
                    114:                argv++;
                    115:        }
                    116:        exit(0);
1.1       kstailey  117: }