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
|
/*
* Copyright (C) 2003-2012 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 "tag_file.h"
#include "uri.h"
#include "decoder_list.h"
#include "decoder_plugin.h"
#include "input_stream.h"
#include <assert.h>
#include <unistd.h> /* for SEEK_SET */
bool
tag_file_scan(const char *path_fs,
const struct tag_handler *handler, void *handler_ctx)
{
assert(path_fs != NULL);
assert(handler != NULL);
/* check if there's a suffix and a plugin */
const char *suffix = uri_get_suffix(path_fs);
if (suffix == NULL)
return false;
const struct decoder_plugin *plugin =
decoder_plugin_from_suffix(suffix, NULL);
if (plugin == NULL)
return false;
struct input_stream *is = NULL;
GMutex *mutex = NULL;
GCond *cond = NULL;
do {
/* load file tag */
if (decoder_plugin_scan_file(plugin, path_fs,
handler, handler_ctx))
break;
/* fall back to stream tag */
if (plugin->scan_stream != NULL) {
/* open the input_stream (if not already
open) */
if (is == NULL) {
mutex = g_mutex_new();
cond = g_cond_new();
is = input_stream_open(path_fs, mutex, cond,
NULL);
}
/* now try the stream_tag() method */
if (is != NULL) {
if (decoder_plugin_scan_stream(plugin, is,
handler,
handler_ctx))
break;
input_stream_lock_seek(is, 0, SEEK_SET, NULL);
}
}
plugin = decoder_plugin_from_suffix(suffix, plugin);
} while (plugin != NULL);
if (is != NULL) {
input_stream_close(is);
g_cond_free(cond);
g_mutex_free(mutex);
}
return plugin != NULL;
}
|
