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Diffstat (limited to 'src/SongUpdate.cxx')
| -rw-r--r-- | src/SongUpdate.cxx | 192 |
1 files changed, 192 insertions, 0 deletions
diff --git a/src/SongUpdate.cxx b/src/SongUpdate.cxx new file mode 100644 index 000000000..4c5f35c78 --- /dev/null +++ b/src/SongUpdate.cxx @@ -0,0 +1,192 @@ +/* + * 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 <glib.h> + +#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) == g_path_is_absolute(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; +} |