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/types.h>
18 #include <sys/queue.h>
19 #include <sys/uio.h>
20 
21 #include <err.h>
22 #include <event.h>
23 #include <fcntl.h>
24 #include <math.h>
25 #include <inttypes.h>
26 #include <limits.h>
27 #include <stdio.h>
28 #include <stdint.h>
29 #include <imsg.h>
30 #include <unistd.h>
31 
32 #include <vorbis/codec.h>
33 #include <vorbis/vorbisfile.h>
34 
35 #include "amused.h"
36 #include "log.h"
37 
38 #ifndef nitems
39 #define nitems(x) (sizeof(x)/sizeof(x[0]))
40 #endif
41 
42 int
43 play_oggvorbis(int fd, const char **errstr)
44 {
45 	static uint8_t pcmout[4096];
46 	FILE *f;
47 	OggVorbis_File vf;
48 	vorbis_info *vi;
49 	int64_t seek = -1;
50 	int current_section, eof = 0, ret = 0;
51 
52 	if ((f = fdopen(fd, "r")) == NULL)
53 		err(1, "fdopen");
54 
55 	if (ov_open_callbacks(f, &vf, NULL, 0, OV_CALLBACKS_NOCLOSE) < 0) {
56 		*errstr = "input is not an Ogg bitstream";
57 		ret = -1;
58 		goto end;
59 	}
60 
61 	/*
62 	 * we could extract some tags by looping over the NULL
63 	 * terminated array returned by ov_comment(&vf, -1), see
64 	 * previous revision of this file.
65 	 */
66 	vi = ov_info(&vf, -1);
67 	if (player_setup(16, vi->rate, vi->channels) == -1)
68 		err(1, "player_setup");
69 
70 	player_setduration(ov_time_total(&vf, -1) * vi->rate);
71 
72 	while (!eof) {
73 		long r;
74 
75 		if (seek != -1) {
76 			r = ov_pcm_seek(&vf, seek);
77 			if (r != 0)
78 				break;
79 			player_setpos(seek);
80 		}
81 
82 		r = ov_read(&vf, pcmout, sizeof(pcmout), 0, 2, 1,
83 		    &current_section);
84 		if (r == 0)
85 			eof = 1;
86 		else if (r > 0) {
87 			/* TODO: deal with sample rate changes */
88 			if (!play(pcmout, r, &seek)) {
89 				ret = 1;
90 				break;
91 			}
92 		}
93 	}
94 
95 	ov_clear(&vf);
96 
97 end:
98 	fclose(f);
99 	return ret;
100 }