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/*
* 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" /* must be first for large file support */
#include "song.h"
#include "uri.h"
#include "directory.h"
#include "mapper.h"
#include "decoder_list.h"
#include "decoder_plugin.h"
#include "tag_ape.h"
#include "tag_id3.h"
#include "tag.h"
#include "tag_handler.h"
#include "input_stream.h"
#include <glib.h>
#include <assert.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <stdio.h>
struct song *
song_file_load(const char *path, struct directory *parent)
{
struct song *song;
bool ret;
assert((parent == NULL) == g_path_is_absolute(path));
assert(!uri_has_scheme(path));
assert(strchr(path, '\n') == NULL);
song = song_file_new(path, parent);
//in archive ?
if (parent != NULL && parent->device == DEVICE_INARCHIVE) {
ret = song_file_update_inarchive(song);
} else {
ret = song_file_update(song);
}
if (!ret) {
song_free(song);
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_file_update(struct song *song)
{
const char *suffix;
char *path_fs;
const struct decoder_plugin *plugin;
struct stat st;
struct input_stream *is = NULL;
assert(song_is_file(song));
/* check if there's a suffix and a plugin */
suffix = uri_get_suffix(song->uri);
if (suffix == NULL)
return false;
plugin = decoder_plugin_from_suffix(suffix, NULL);
if (plugin == NULL)
return false;
path_fs = map_song_fs(song);
if (path_fs == NULL)
return false;
if (song->tag != NULL) {
tag_free(song->tag);
song->tag = NULL;
}
if (stat(path_fs, &st) < 0 || !S_ISREG(st.st_mode)) {
g_free(path_fs);
return false;
}
song->mtime = st.st_mtime;
GMutex *mutex = NULL;
GCond *cond;
#if !GCC_CHECK_VERSION(4, 2)
/* work around "may be used uninitialized in this function"
false positive */
cond = NULL;
#endif
do {
/* load file tag */
song->tag = tag_new();
if (decoder_plugin_scan_file(plugin, path_fs,
&full_tag_handler, song->tag))
break;
tag_free(song->tag);
song->tag = NULL;
/* 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) {
song->tag = tag_new();
if (decoder_plugin_scan_stream(plugin, is,
&full_tag_handler,
song->tag))
break;
tag_free(song->tag);
song->tag = NULL;
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);
if (mutex != NULL) {
g_cond_free(cond);
g_mutex_free(mutex);
}
if (song->tag != NULL && tag_is_empty(song->tag))
tag_scan_fallback(path_fs, &full_tag_handler, song->tag);
g_free(path_fs);
return song->tag != NULL;
}
bool
song_file_update_inarchive(struct song *song)
{
const char *suffix;
const struct decoder_plugin *plugin;
assert(song_is_file(song));
/* check if there's a suffix and a plugin */
suffix = uri_get_suffix(song->uri);
if (suffix == NULL)
return false;
plugin = decoder_plugin_from_suffix(suffix, NULL);
if (plugin == NULL)
return false;
if (song->tag != NULL)
tag_free(song->tag);
//accept every file that has music suffix
//because we don't support tag reading through
//input streams
song->tag = tag_new();
return true;
}
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