Blob


1 /*
2 * Copyright (c) 2022 Omar Polo <op@openbsd.org>
3 *
4 * Permission to use, copy, modify, and distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
7 *
8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
15 */
17 #include <sys/mman.h>
18 #include <sys/stat.h>
19 #include <sys/types.h>
20 #include <sys/queue.h>
21 #include <sys/uio.h>
23 #include <err.h>
24 #include <event.h>
25 #include <limits.h>
26 #include <imsg.h>
27 #include <unistd.h>
29 #include <mpg123.h>
31 #include "amused.h"
32 #include "log.h"
34 static int
35 setup(mpg123_handle *mh)
36 {
37 long rate;
38 int chan, enc;
40 if (mpg123_getformat(mh, &rate, &chan, &enc) != MPG123_OK) {
41 log_warnx("mpg123_getformat failed");
42 return 0;
43 }
45 if (player_setup(mpg123_encsize(enc) * 8, rate, chan) == -1)
46 err(1, "player_setup");
48 return 1;
49 }
51 int
52 play_mp3(int fd)
53 {
54 static char buf[4096];
55 size_t len;
56 mpg123_handle *mh;
57 int err, ret = -1;
59 if ((mh = mpg123_new(NULL, NULL)) == NULL)
60 fatal("mpg123_new");
62 if (mpg123_open_fd(mh, fd) != MPG123_OK) {
63 log_warnx("mpg123_open_fd failed");
64 close(fd);
65 return -1;
66 }
68 if (!setup(mh))
69 goto done;
71 for (;;) {
72 err = mpg123_read(mh, buf, sizeof(buf), &len);
73 switch (err) {
74 case MPG123_DONE:
75 ret = 0;
76 goto done;
77 case MPG123_NEW_FORMAT:
78 if (!setup(mh))
79 goto done;
80 break;
81 case MPG123_OK:
82 if (!play(buf, len)) {
83 ret = 1;
84 goto done;
85 }
86 break;
87 default:
88 log_warnx("error decoding mp3, "
89 "continuing nevertheless");
90 break;
91 }
92 }
94 done:
95 mpg123_delete(mh);
96 close(fd);
97 return ret;
98 }