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Annotation of src/usr.bin/aucat/aucat.c, Revision 1.4

1.4     ! millert     1: /*     $OpenBSD: aucat.c,v 1.3 1997/01/05 19:00:51 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>
1.4     ! millert    35: #include <stdlib.h>
1.1       kstailey   36: #include <unistd.h>
1.4     ! millert    37: #include <err.h>
1.1       kstailey   38:
                     39: /*
                     40:  * aucat: concatinate and play Sun 8-bit .au files
                     41:  */
                     42:
                     43: /* function playfile: given a file which is positioned at the beginning
                     44:  * of what is assumed to be an .au data stream copy it out to the audio
                     45:  * device.  Return 0 on sucess, -1 on failure.
                     46:  */
                     47: int
1.4     ! millert    48: playfile(fd, dev)
        !            49:        int fd;
        !            50:        char *dev;
1.1       kstailey   51: {
1.4     ! millert    52:        static int afd = -1;
        !            53:        int rd;
        !            54:        char buf[5120];
        !            55:
        !            56:        if (afd == -1 && (afd = open(dev, O_WRONLY)) < 0) {
        !            57:                warn("can't open %s", dev);
        !            58:                return(-1);
        !            59:        }
        !            60:        while ((rd = read(fd, buf, sizeof(buf))) > 0) {
        !            61:                write(afd, buf, rd);
        !            62:                if (rd < sizeof(buf))
        !            63:                        break;
        !            64:        }
        !            65:
        !            66:        return (0);
1.1       kstailey   67: }
                     68:
                     69: int
1.4     ! millert    70: main(argc, argv)
        !            71:        int argc;
        !            72:        char **argv;
1.1       kstailey   73: {
1.4     ! millert    74:        int fd, ch;
        !            75:        unsigned long data;
        !            76:        char magic[5];
        !            77:        char *dev;
        !            78:
        !            79:        dev = getenv("AUDIODEVICE");
        !            80:        if (dev == 0)
        !            81:                dev = "/dev/audio";
        !            82:
        !            83:        while ((ch = getopt(argc, argv, "f:")) != -1) {
        !            84:                switch(ch) {
        !            85:                case 'f':
        !            86:                        dev = optarg;
        !            87:                        break;
        !            88:                }
        !            89:        }
        !            90:        argc -= optind;
        !            91:        argv += optind;
        !            92:
        !            93:        while (argc) {
        !            94:                if ((fd = open(*argv, O_RDONLY)) < 0)
        !            95:                        err(1, "cannot open %s", *argv);
        !            96:
        !            97:                read(fd, magic, 4);
        !            98:                magic[4] = '\0';
        !            99:                if (strcmp(magic, ".snd")) {
        !           100:                        /*
        !           101:                         * not an .au file, bad header.
        !           102:                         * Assume raw audio data since that's
        !           103:                         * what /dev/audio generates by default.
        !           104:                         */
        !           105:                        lseek(fd, 0, SEEK_SET);
        !           106:                } else {
        !           107:                        read(fd, &data, sizeof(data));
        !           108:                        data = ntohl(data);
        !           109:                        lseek(fd, (off_t)data, SEEK_SET);
        !           110:                }
        !           111:                if (playfile(fd, dev) < 0)
        !           112:                        exit(1);
        !           113:                argc--;
        !           114:                argv++;
        !           115:        }
        !           116:        exit(0);
1.1       kstailey  117: }