aboutsummaryrefslogtreecommitdiffstats
path: root/src/player_control.h
blob: a18120ca160ebe510361950ccaff458d7480d2a3 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
/*
 * Copyright (C) 2003-2009 The Music Player Daemon Project
 * http://www.musicpd.org
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */

#ifndef MPD_PLAYER_H
#define MPD_PLAYER_H

#include "notify.h"
#include "audio_format.h"

#include <stdint.h>

enum player_state {
	PLAYER_STATE_STOP = 0,
	PLAYER_STATE_PAUSE,
	PLAYER_STATE_PLAY
};

enum player_command {
	PLAYER_COMMAND_NONE = 0,
	PLAYER_COMMAND_EXIT,
	PLAYER_COMMAND_STOP,
	PLAYER_COMMAND_PLAY,
	PLAYER_COMMAND_PAUSE,
	PLAYER_COMMAND_SEEK,
	PLAYER_COMMAND_CLOSE_AUDIO,

	/** player_control.next_song has been updated */
	PLAYER_COMMAND_QUEUE,

	/**
	 * cancel pre-decoding player_control.next_song; if the player
	 * has already started playing this song, it will completely
	 * stop
	 */
	PLAYER_COMMAND_CANCEL,
};

enum player_error {
	PLAYER_ERROR_NOERROR = 0,
	PLAYER_ERROR_FILE,
	PLAYER_ERROR_AUDIO,
	PLAYER_ERROR_SYSTEM,
	PLAYER_ERROR_UNKTYPE,
	PLAYER_ERROR_FILENOTFOUND,
};

struct player_status {
	enum player_state state;
	uint16_t bit_rate;
	struct audio_format audio_format;
	float total_time;
	float elapsed_time;
};

struct player_control {
	unsigned buffer_chunks;

	unsigned int buffered_before_play;

	/** the handle of the player thread, or NULL if the player
	    thread isn't running */
	GThread *thread;

	struct notify notify;
	volatile enum player_command command;
	volatile enum player_state state;
	volatile enum player_error error;
	uint16_t bit_rate;
	struct audio_format audio_format;
	float total_time;
	float elapsed_time;
	struct song *volatile next_song;
	struct song *errored_song;
	volatile double seek_where;
	float cross_fade_seconds;
	double total_play_time;
};

extern struct player_control pc;

void pc_init(unsigned buffer_chunks, unsigned buffered_before_play);

void pc_deinit(void);

/**
 * Call this function when the specified song pointer is about to be
 * invalidated.  This makes sure that player_control.errored_song does
 * not point to an invalid pointer.
 */
void
pc_song_deleted(const struct song *song);

void
pc_play(struct song *song);

/**
 * see PLAYER_COMMAND_CANCEL
 */
void pc_cancel(void);

void
pc_set_pause(bool pause_flag);

void
pc_pause(void);

void
pc_kill(void);

void
pc_get_status(struct player_status *status);

enum player_state
pc_get_state(void);

void
pc_clear_error(void);

/**
 * Returns the human-readable message describing the last error during
 * playback, NULL if no error occurred.  The caller has to free the
 * returned string.
 */
char *
pc_get_error_message(void);

enum player_error
pc_get_error(void);

void
pc_stop(void);

void
pc_enqueue_song(struct song *song);

/**
 * Makes the player thread seek the specified song to a position.
 *
 * @return true on success, false on failure (e.g. if MPD isn't
 * playing currently)
 */
bool
pc_seek(struct song *song, float seek_time);

void
pc_set_cross_fade(float cross_fade_seconds);

float
pc_get_cross_fade(void);

double
pc_get_total_play_time(void);

#endif