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/* 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 "song.h"
#include "ls.h"
#include "directory.h"
#include "mapper.h"
#include "path.h"
#include "playlist.h"
#include "decoder_list.h"
#include "decoder_api.h"
#include "tag_id3.h"
#include <glib.h>
#include <assert.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
static struct song *
song_alloc(const char *url, struct directory *parent)
{
size_t urllen;
struct song *song;
assert(url);
urllen = strlen(url);
assert(urllen);
song = g_malloc(sizeof(*song) - sizeof(song->url) + urllen + 1);
song->tag = NULL;
memcpy(song->url, url, urllen + 1);
song->parent = parent;
return song;
}
struct song *
song_remote_new(const char *url)
{
return song_alloc(url, NULL);
}
struct song *
song_file_new(const char *path, struct directory *parent)
{
assert((parent == NULL) == (*path == '/'));
return song_alloc(path, parent);
}
struct song *
song_file_load(const char *path, struct directory *parent)
{
struct song *song;
bool ret;
assert((parent == NULL) == (*path == '/'));
assert(!uri_has_scheme(path));
assert(strchr(path, '\n') == NULL);
song = song_file_new(path, parent);
//in archive ?
if (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;
}
void
song_free(struct song *song)
{
if (song->tag)
tag_free(song->tag);
g_free(song);
}
/**
* Attempts to load APE or ID3 tags from the specified file.
*/
static struct tag *
tag_load_fallback(const char *path)
{
struct tag *tag = tag_ape_load(path);
if (tag == NULL)
tag = tag_id3_load(path);
return tag;
}
/**
* The decoder plugin failed to load any tags: fall back to the APE or
* ID3 tag loader.
*/
static struct tag *
tag_fallback(const char *path, struct tag *tag)
{
struct tag *fallback = tag_load_fallback(path);
if (fallback != NULL) {
/* tag was successfully loaded: copy the song
duration, and destroy the old (empty) tag */
fallback->time = tag->time;
tag_free(tag);
return fallback;
} else
/* no APE/ID3 tag found: return the empty tag */
return tag;
}
bool
song_file_update(struct song *song)
{
const char *suffix;
char *path_fs;
const struct decoder_plugin *plugin;
struct stat st;
assert(song_is_file(song));
/* check if there's a suffix and a plugin */
suffix = uri_get_suffix(song->url);
if (suffix == NULL)
return false;
plugin = decoder_plugin_from_suffix(suffix, false);
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;
do {
song->tag = plugin->tag_dup(path_fs);
if (song->tag != NULL)
break;
plugin = decoder_plugin_from_suffix(suffix, true);
} while (plugin != NULL);
if (song->tag != NULL && tag_is_empty(song->tag))
song->tag = tag_fallback(path_fs, 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->url);
if (suffix == NULL)
return false;
plugin = decoder_plugin_from_suffix(suffix, false);
if (plugin == NULL)
return false;
if (song->tag != NULL)
tag_free(song->tag);
//accept every file that has music suffix
//because we dont support tag reading throught
//input streams
song->tag = tag_new();
return true;
}
char *
song_get_uri(const struct song *song)
{
assert(song != NULL);
assert(*song->url);
if (!song_in_database(song) || directory_is_root(song->parent))
return g_strdup(song->url);
else
return g_strconcat(directory_get_path(song->parent),
"/", song->url, NULL);
}
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