/* * 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/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 <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) == Path::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; }