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