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
|
/*
* Copyright (C) 2003-2011 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.
*/
#include "config.h"
#include "input_stream.h"
#include "input_registry.h"
#include "input_plugin.h"
#include "input/rewind_input_plugin.h"
#include <glib.h>
#include <assert.h>
static inline GQuark
input_quark(void)
{
return g_quark_from_static_string("input");
}
struct input_stream *
input_stream_open(const char *url, GError **error_r)
{
GError *error = NULL;
assert(error_r == NULL || *error_r == NULL);
for (unsigned i = 0; input_plugins[i] != NULL; ++i) {
const struct input_plugin *plugin = input_plugins[i];
struct input_stream *is;
if (!input_plugins_enabled[i])
continue;
is = plugin->open(url, &error);
if (is != NULL) {
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);
is = input_rewind_open(is);
return is;
} else if (error != NULL) {
g_propagate_error(error_r, error);
return NULL;
}
}
g_set_error(error_r, input_quark(), 0, "Unrecognized URI");
return false;
}
void
input_stream_update(struct input_stream *is)
{
assert(is != NULL);
assert(is->plugin != NULL);
if (is->plugin->update != NULL)
is->plugin->update(is);
}
bool
input_stream_seek(struct input_stream *is, goffset offset, int whence,
GError **error_r)
{
if (is->plugin->seek == NULL)
return false;
return is->plugin->seek(is, offset, whence, error_r);
}
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,
GError **error_r)
{
assert(ptr != NULL);
assert(size > 0);
return is->plugin->read(is, ptr, size, error_r);
}
void input_stream_close(struct input_stream *is)
{
is->plugin->close(is);
}
bool input_stream_eof(struct input_stream *is)
{
return is->plugin->eof(is);
}
int
input_stream_buffer(struct input_stream *is, GError **error_r)
{
if (is->plugin->buffer == NULL)
return 0;
return is->plugin->buffer(is, error_r);
}
|
