blob: ee58c0a3e91330feea562d9fbd14146a759ce380 (
plain)
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
|
/*
* Copyright 2003-2017 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.
*/
/** \file
*
* This header declares the db_plugin class. It describes a
* plugin API for databases of song metadata.
*/
#ifndef MPD_DATABASE_PLUGIN_HXX
#define MPD_DATABASE_PLUGIN_HXX
struct ConfigBlock;
class EventLoop;
class DatabaseListener;
class Database;
struct DatabasePlugin {
/**
* This plugin requires a #Storage instance. It contains only
* cached metadata from files in the #Storage.
*/
static constexpr unsigned FLAG_REQUIRE_STORAGE = 0x1;
const char *name;
unsigned flags;
/**
* Allocates and configures a database.
*
* Throws #std::runtime_error on error.
*
* @param main_event_loop the #EventLoop running in the same
* thread which invokes #Database methods
* @param io_event_loop the #EventLoop running on the
* #EventThread, i.e. the one used for background I/O
*/
Database *(*create)(EventLoop &main_event_loop,
EventLoop &io_event_loop,
DatabaseListener &listener,
const ConfigBlock &block);
constexpr bool RequireStorage() const {
return flags & FLAG_REQUIRE_STORAGE;
}
};
#endif
|
