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Annotation of src/usr.bin/aucat/aucat.c, Revision 1.1

1.1     ! kstailey    1: /*     $OpenBSD$       */
        !             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));
        !            90:       if (BYTE_ORDER != BIG_ENDIAN)
        !            91:        data = htonl(data);
        !            92:       lseek(fd, (off_t)data, SEEK_SET);
        !            93:     }
        !            94:     if (playfile(fd) < 0)
        !            95:       exit(1);
        !            96:   }
        !            97:   exit(0);
        !            98: }