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
171
172
173
174
175
176
177
178
179
180
181
|
/* the Music Player Daemon (MPD)
* Copyright (C) 2003-2007 by Warren Dukes (warren.dukes@gmail.com)
* This project's homepage is: 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "input_plugin.h"
#include "config.h"
#include "conf.h"
#include "input/file_input_plugin.h"
#ifdef ENABLE_ARCHIVE
#include "input/archive_input_plugin.h"
#endif
#ifdef HAVE_CURL
#include "input/curl_input_plugin.h"
#endif
#ifdef ENABLE_MMS
#include "input/mms_input_plugin.h"
#endif
#include <glib.h>
#include <assert.h>
#include <string.h>
static const struct input_plugin *const input_plugins[] = {
&input_plugin_file,
#ifdef ENABLE_ARCHIVE
&input_plugin_archive,
#endif
#ifdef HAVE_CURL
&input_plugin_curl,
#endif
#ifdef ENABLE_MMS
&input_plugin_mms,
#endif
};
static bool input_plugins_enabled[G_N_ELEMENTS(input_plugins)];
static const unsigned num_input_plugins =
sizeof(input_plugins) / sizeof(input_plugins[0]);
/**
* Find the "input" configuration block for the specified plugin.
*
* @param plugin_name the name of the input plugin
* @return the configuration block, or NULL if none was configured
*/
static const struct config_param *
input_plugin_config(const char *plugin_name)
{
const struct config_param *param = NULL;
while ((param = config_get_next_param(CONF_INPUT, param)) != NULL) {
const char *name =
config_get_block_string(param, "plugin", NULL);
if (name == NULL)
g_error("input configuration without 'plugin' name in line %d",
param->line);
if (strcmp(name, plugin_name) == 0)
return param;
}
return NULL;
}
void input_stream_global_init(void)
{
for (unsigned i = 0; i < num_input_plugins; ++i) {
const struct input_plugin *plugin = input_plugins[i];
const struct config_param *param =
input_plugin_config(plugin->name);
if (!config_get_block_bool(param, "enabled", true))
/* the plugin is disabled in mpd.conf */
continue;
if (plugin->init == NULL || plugin->init(param))
input_plugins_enabled[i] = true;
}
}
void input_stream_global_finish(void)
{
for (unsigned i = 0; i < num_input_plugins; ++i)
if (input_plugins_enabled[i] &&
input_plugins[i]->finish != NULL)
input_plugins[i]->finish();
}
bool
input_stream_open(struct input_stream *is, const char *url)
{
is->seekable = false;
is->ready = false;
is->offset = 0;
is->size = -1;
is->error = 0;
is->mime = NULL;
for (unsigned i = 0; i < num_input_plugins; ++i) {
const struct input_plugin *plugin = input_plugins[i];
if (input_plugins_enabled[i] && plugin->open(is, url)) {
assert(is->plugin != NULL);
assert(is->plugin->close != NULL);
assert(is->plugin->read != NULL);
assert(is->plugin->eof != NULL);
assert(!is->seekable || is->plugin->seek != NULL);
return true;
}
}
return false;
}
bool
input_stream_seek(struct input_stream *is, off_t offset, int whence)
{
if (is->plugin->seek == NULL)
return false;
return is->plugin->seek(is, offset, whence);
}
struct tag *
input_stream_tag(struct input_stream *is)
{
assert(is != NULL);
return is->plugin->tag != NULL
? is->plugin->tag(is)
: NULL;
}
size_t
input_stream_read(struct input_stream *is, void *ptr, size_t size)
{
assert(ptr != NULL);
assert(size > 0);
return is->plugin->read(is, ptr, size);
}
void input_stream_close(struct input_stream *is)
{
is->plugin->close(is);
g_free(is->mime);
}
bool input_stream_eof(struct input_stream *is)
{
return is->plugin->eof(is);
}
int input_stream_buffer(struct input_stream *is)
{
if (is->plugin->buffer == NULL)
return 0;
return is->plugin->buffer(is);
}
|
