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
 */
16

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>
22

23
#include <err.h>
24
#include <event.h>
25
#include <limits.h>
26
#include <sndio.h>
27
#include <imsg.h>
28
#include <unistd.h>
29

30
#include <mpg123.h>
31

32
#include "amused.h"
33
#include "log.h"
34

35
static int
36
setup(mpg123_handle *mh)
37
{
38
	long	rate;
39
	int	chan, enc;
40

41
	if (mpg123_getformat(mh, &rate, &chan, &enc) != MPG123_OK) {
42
		log_warnx("mpg123_getformat failed");
43
		return 0;
44
	}
45

46
	if (player_setup(mpg123_encsize(enc) * 8, rate, chan) == -1)
47
		err(1, "player_setrate");
48

49
	return 1;
50
}
51

52
void
53
play_mp3(int fd)
54
{
55
	static char	 buf[4096];
56
	size_t		 len;
57
	mpg123_handle	*mh;
58
	int		 err;
59

60
	if ((mh = mpg123_new(NULL, NULL)) == NULL)
61
		fatal("mpg123_new");
62

63
	if (mpg123_open_fd(mh, fd) != MPG123_OK) {
64
		log_warnx("mpg123_open_fd failed");
65
		close(fd);
66
		return;
67
	}
68

69
	if (!setup(mh))
70
		goto done;
71

72
	for (;;) {
73
		err = mpg123_read(mh, buf, sizeof(buf), &len);
74
		switch (err) {
75
		case MPG123_DONE:
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
				goto done;
84
			break;
85
		default:
86
			log_warnx("error %d decoding mp3", err);
87
			goto done;
88
		}
89
	}
90

91
done:
92
	mpg123_delete(mh);
93
	close(fd);
94
}