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 "config.h"
19 #include <sys/mman.h>
20 #include <sys/stat.h>
22 #include <limits.h>
23 #include <stdio.h>
24 #include <unistd.h>
26 #include <mpg123.h>
28 #include "amused.h"
29 #include "log.h"
31 static int
32 setup(mpg123_handle *mh)
33 {
34 long rate;
35 int chan, enc;
37 if (mpg123_getformat(mh, &rate, &chan, &enc) != MPG123_OK) {
38 log_warnx("mpg123_getformat failed");
39 return 0;
40 }
42 if (player_setup(mpg123_encsize(enc) * 8, rate, chan) == -1)
43 err(1, "player_setup");
45 return 1;
46 }
48 int
49 play_mp3(int fd, const char **errstr)
50 {
51 static char buf[4096];
52 size_t len;
53 mpg123_handle *mh;
54 int64_t seek = -1;
55 int err, ret = -1;
57 if ((mh = mpg123_new(NULL, NULL)) == NULL)
58 fatal("mpg123_new");
60 if (mpg123_open_fd(mh, fd) != MPG123_OK) {
61 *errstr = "mpg123_open_fd failed";
62 close(fd);
63 return -1;
64 }
66 if (!setup(mh))
67 goto done;
69 if (mpg123_scan(mh) != MPG123_OK)
70 goto done;
72 player_setduration(mpg123_length(mh));
74 for (;;) {
75 if (seek != -1) {
76 seek = mpg123_seek(mh, seek, SEEK_SET);
77 if (seek < 0) {
78 ret = 0;
79 break;
80 }
81 player_setpos(seek);
82 }
84 err = mpg123_read(mh, buf, sizeof(buf), &len);
85 switch (err) {
86 case MPG123_DONE:
87 ret = 0;
88 goto done;
89 case MPG123_NEW_FORMAT:
90 if (!setup(mh))
91 goto done;
92 break;
93 case MPG123_OK:
94 if (!play(buf, len, &seek)) {
95 ret = 1;
96 goto done;
97 }
98 break;
99 default:
100 log_warnx("skipping mp3 decoding error");
101 break;
105 done:
106 mpg123_delete(mh);
107 close(fd);
108 return ret;