/* 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 "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 <glib.h> #include <assert.h> #include <sys/types.h> #include <sys/stat.h> #include <unistd.h> #include <string.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 != 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; } 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); }