1 /*
2  * Copyright (c) 2022, 2023 Omar Polo <op@omarpolo.com>
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 #ifndef AMUSED_H
18 #define AMUSED_H
19 
20 extern char		*csock;
21 extern int		 debug;
22 extern int		 verbose;
23 extern int		 playing;
24 extern struct imsgev	*iev_player;
25 
26 #define IMSG_DATA_SIZE(imsg)	((imsg).hdr.len - IMSG_HEADER_SIZE)
27 
28 enum imsg_type {
29 	IMSG_PLAY,		/* fd + filename */
30 	IMSG_RESUME,
31 	IMSG_PAUSE,
32 	IMSG_STOP,
33 	IMSG_POS,
34 	IMSG_LEN,
35 	IMSG_EOF,
36 	IMSG_ERR,		/* error string */
37 
38 	IMSG_CTL_PLAY,		/* with optional filename */
39 	IMSG_CTL_TOGGLE_PLAY,
40 	IMSG_CTL_PAUSE,
41 	IMSG_CTL_STOP,
42 	IMSG_CTL_FLUSH,
43 	IMSG_CTL_SHOW,
44 	IMSG_CTL_STATUS,
45 	IMSG_CTL_NEXT,
46 	IMSG_CTL_PREV,
47 	IMSG_CTL_JUMP,
48 	IMSG_CTL_MODE,		/* struct player_mode */
49 	IMSG_CTL_SEEK,		/* struct player_seek */
50 
51 	IMSG_CTL_BEGIN,
52 	IMSG_CTL_ADD,		/* path to a file */
53 	IMSG_CTL_COMMIT,	/* offset of the track to jump to */
54 
55 	IMSG_CTL_MONITOR,	/* struct player_event */
56 
57 	IMSG_CTL_ERR,
58 	IMSG__LAST,
59 };
60 
61 struct imsgev {
62 	struct imsgbuf	 imsgbuf;
63 	void		(*handler)(int, int, void *);
64 	int		 events;
65 };
66 
67 enum actions {
68 	NONE,
69 	PLAY,
70 	PAUSE,
71 	TOGGLE,
72 	STOP,
73 	RESTART,		/* seek to zero */
74 	ADD,
75 	FLUSH,
76 	SHOW,
77 	STATUS,
78 	PREV,
79 	NEXT,
80 	LOAD,
81 	JUMP,
82 	MODE,
83 	MONITOR,
84 	SEEK,
85 };
86 
87 struct player_seek {
88 	int64_t	offset;
89 	int	relative;
90 	int	percent;
91 };
92 
93 struct ctl_command;
94 
95 #define MODE_ON		+1
96 #define MODE_OFF	 0
97 #define MODE_UNDEF	-1
98 #define MODE_TOGGLE	-2
99 struct player_mode {
100 	int	repeat_one;
101 	int	repeat_all;
102 	int	consume;
103 };
104 
105 struct player_status {
106 	char			path[PATH_MAX];
107 	int			status;
108 	int64_t			position;
109 	int64_t			duration;
110 	struct player_mode	mode;
111 };
112 
113 struct player_event {
114 	int			 event;
115 	int64_t			 position;
116 	int64_t			 duration;
117 	struct player_mode	 mode;
118 };
119 
120 struct parse_result {
121 	enum actions		 action;
122 	char			**files;
123 	FILE			*fp;
124 	int			 pretty;
125 	int			 monitor[IMSG__LAST];
126 	struct player_mode	 mode;
127 	struct player_seek	 seek;
128 	const char		*status_format;
129 	struct ctl_command	*ctl;
130 };
131 
132 struct ctl_command {
133 	const char		*name;
134 	enum actions		 action;
135 	int			(*main)(struct parse_result *, int, char **);
136 	const char		*usage;
137 };
138 
139 struct playlist;
140 struct pollfd;
141 
142 /* amused.c */
143 void		spawn_daemon(void);
144 void		imsg_event_add(struct imsgev *iev);
145 int		imsg_compose_event(struct imsgev *, uint16_t, uint32_t,
146 		    pid_t, int, const void *, uint16_t);
147 int		main_send_player(uint16_t, int, const void *, size_t);
148 int		main_play_song(const char *);
149 void		main_playlist_jump(struct imsgev *, struct imsg *);
150 void		main_playlist_resume(void);
151 void		main_playlist_advance(void);
152 void		main_playlist_previous(void);
153 void		main_senderr(struct imsgev *, const char *);
154 void		main_enqueue(int, struct playlist *, struct imsgev *, struct imsg *);
155 void		main_send_playlist(struct imsgev *);
156 void		main_send_status(struct imsgev *);
157 void		main_seek(struct player_seek *);
158 
159 /* audio_*.c */
160 int		audio_open(void (*)(void *, int));
161 int		audio_setup(unsigned int, unsigned int, unsigned int,
162 		    struct pollfd *, int);
163 int		audio_nfds(void);
164 int		audio_pollfd(struct pollfd *, int, int);
165 int		audio_revents(struct pollfd *, int);
166 size_t		audio_write(const void *, size_t);
167 int		audio_flush(void);
168 int		audio_stop(void);
169 
170 /* ctl.c */
171 __dead void	usage(void);
172 __dead void	ctl(int, char **);
173 
174 /* player.c */
175 int	player_setup(unsigned int, unsigned int, unsigned int);
176 void	player_setduration(int64_t);
177 void	player_setpos(int64_t);
178 int	play(const void *, size_t, int64_t *);
179 int	player(int, int);
180 
181 int	play_oggvorbis(int, const char **);
182 int	play_mp3(int, const char **);
183 int	play_flac(int, const char **);
184 int	play_opus(int, const char **);
185 
186 #endif