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
182
183
184
185
186
187
188
189
190
191
192
193
|
/*
* Copyright (C) 2003-2013 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" /* must be first for large file support */
#include "Song.hxx"
#include "util/UriUtil.hxx"
#include "util/Error.hxx"
#include "Directory.hxx"
#include "Mapper.hxx"
#include "fs/Path.hxx"
#include "fs/Traits.hxx"
#include "fs/FileSystem.hxx"
#include "InputStream.hxx"
#include "DecoderPlugin.hxx"
#include "DecoderList.hxx"
#include "tag/Tag.hxx"
#include "tag/TagBuilder.hxx"
#include "tag/TagHandler.hxx"
#include "tag/TagId3.hxx"
#include "tag/ApeTag.hxx"
#include "thread/Cond.hxx"
#include <assert.h>
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <stdio.h>
Song *
Song::LoadFile(const char *path_utf8, Directory *parent)
{
Song *song;
bool ret;
assert((parent == NULL) == PathTraits::IsAbsoluteUTF8(path_utf8));
assert(!uri_has_scheme(path_utf8));
assert(strchr(path_utf8, '\n') == NULL);
song = NewFile(path_utf8, parent);
//in archive ?
if (parent != NULL && parent->device == DEVICE_INARCHIVE) {
ret = song->UpdateFileInArchive();
} else {
ret = song->UpdateFile();
}
if (!ret) {
song->Free();
return NULL;
}
return song;
}
/**
* Attempts to load APE or ID3 tags from the specified file.
*/
static bool
tag_scan_fallback(const char *path,
const struct tag_handler *handler, void *handler_ctx)
{
return tag_ape_scan2(path, handler, handler_ctx) ||
tag_id3_scan(path, handler, handler_ctx);
}
bool
Song::UpdateFile()
{
const char *suffix;
const struct decoder_plugin *plugin;
struct stat st;
struct input_stream *is = NULL;
assert(IsFile());
/* check if there's a suffix and a plugin */
suffix = uri_get_suffix(uri);
if (suffix == NULL)
return false;
plugin = decoder_plugin_from_suffix(suffix, NULL);
if (plugin == NULL)
return false;
const Path path_fs = map_song_fs(this);
if (path_fs.IsNull())
return false;
delete tag;
tag = nullptr;
if (!StatFile(path_fs, st) || !S_ISREG(st.st_mode)) {
return false;
}
mtime = st.st_mtime;
Mutex mutex;
Cond cond;
TagBuilder tag_builder;
do {
/* load file tag */
if (decoder_plugin_scan_file(plugin, path_fs.c_str(),
&full_tag_handler, &tag_builder))
break;
tag_builder.Clear();
/* fall back to stream tag */
if (plugin->scan_stream != NULL) {
/* open the input_stream (if not already
open) */
if (is == NULL)
is = input_stream::Open(path_fs.c_str(),
mutex, cond,
IgnoreError());
/* now try the stream_tag() method */
if (is != NULL) {
if (decoder_plugin_scan_stream(plugin, is,
&full_tag_handler,
&tag_builder))
break;
tag_builder.Clear();
is->LockSeek(0, SEEK_SET, IgnoreError());
}
}
plugin = decoder_plugin_from_suffix(suffix, plugin);
} while (plugin != NULL);
if (is != NULL)
is->Close();
if (!tag_builder.IsDefined())
return false;
if (tag_builder.IsEmpty())
tag_scan_fallback(path_fs.c_str(), &full_tag_handler,
&tag_builder);
tag = tag_builder.Commit();
return true;
}
bool
Song::UpdateFileInArchive()
{
const char *suffix;
const struct decoder_plugin *plugin;
assert(IsFile());
/* check if there's a suffix and a plugin */
suffix = uri_get_suffix(uri);
if (suffix == NULL)
return false;
plugin = decoder_plugin_from_suffix(suffix, NULL);
if (plugin == NULL)
return false;
delete tag;
//accept every file that has music suffix
//because we don't support tag reading through
//input streams
tag = new Tag();
return true;
}
|
