From 7ec503c4ec83f4ef86a816bba24635daa25c74b7 Mon Sep 17 00:00:00 2001
From: Max Kellermann <max@duempel.org>
Date: Mon, 12 Oct 2009 22:30:50 +0200
Subject: song: moved code to song_update.c
Moved all the code which depends on the decoder plugins to a separate
source. That allows leaner test programs.
---
src/song_update.c | 172 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 172 insertions(+)
create mode 100644 src/song_update.c
(limited to 'src/song_update.c')
diff --git a/src/song_update.c b/src/song_update.c
new file mode 100644
index 000000000..77b447e47
--- /dev/null
+++ b/src/song_update.c
@@ -0,0 +1,172 @@
+/*
+ * Copyright (C) 2003-2009 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 "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>
+
+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;
+}
+
+/**
+ * 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;
+}
--
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