DespotifyUtils, Expat: move to lib/

2 files changed, 224 insertions, 0 deletions

diff --git a/src/lib/despotify/DespotifyUtils.cxx b/src/lib/despotify/DespotifyUtils.cxx
new file mode 100644
index 000000000..47a83e49b
--- /dev/null
+++ b/src/lib/despotify/DespotifyUtils.cxx
@@ -0,0 +1,153 @@
+/*
+ * Copyright (C) 2003-2014 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 "DespotifyUtils.hxx"
+#include "tag/Tag.hxx"
+#include "tag/TagBuilder.hxx"
+#include "config/ConfigGlobal.hxx"
+#include "config/ConfigOption.hxx"
+#include "util/Domain.hxx"
+#include "Log.hxx"
+
+extern "C" {
+#include <despotify.h>
+}
+
+#include <stdio.h>
+
+const Domain despotify_domain("despotify");
+
+static struct despotify_session *g_session;
+static void (*registered_callbacks[8])(struct despotify_session *,
+		int, void *, void *);
+static void *registered_callback_data[8];
+
+static void
+callback(struct despotify_session* ds, int sig,
+	 void *data, gcc_unused void *callback_data)
+{
+	size_t i;
+
+	for (i = 0; i < sizeof(registered_callbacks) / sizeof(registered_callbacks[0]); i++) {
+		void (*cb)(struct despotify_session *, int, void *, void *) = registered_callbacks[i];
+		void *cb_data = registered_callback_data[i];
+
+		if (cb)
+			cb(ds, sig, data, cb_data);
+	}
+}
+
+bool mpd_despotify_register_callback(void (*cb)(struct despotify_session *, int, void *, void *),
+		void *cb_data)
+{
+	size_t i;
+
+	for (i = 0; i < sizeof(registered_callbacks) / sizeof(registered_callbacks[0]); i++) {
+
+		if (!registered_callbacks[i]) {
+			registered_callbacks[i] = cb;
+			registered_callback_data[i] = cb_data;
+
+			return true;
+		}
+	}
+
+	return false;
+}
+
+void mpd_despotify_unregister_callback(void (*cb)(struct despotify_session *, int, void *, void *))
+{
+	size_t i;
+
+	for (i = 0; i < sizeof(registered_callbacks) / sizeof(registered_callbacks[0]); i++) {
+
+		if (registered_callbacks[i] == cb) {
+			registered_callbacks[i] = nullptr;
+		}
+	}
+}
+
+Tag
+mpd_despotify_tag_from_track(const ds_track &track)
+{
+	char tracknum[20];
+	char comment[80];
+	char date[20];
+
+	if (!track.has_meta_data)
+		return Tag();
+
+	TagBuilder tag;
+	snprintf(tracknum, sizeof(tracknum), "%d", track.tracknumber);
+	snprintf(date, sizeof(date), "%d", track.year);
+	snprintf(comment, sizeof(comment), "Bitrate %d Kbps, %sgeo restricted",
+		 track.file_bitrate / 1000,
+		 track.geo_restricted ? "" : "not ");
+	tag.AddItem(TAG_TITLE, track.title);
+	tag.AddItem(TAG_ARTIST, track.artist->name);
+	tag.AddItem(TAG_TRACK, tracknum);
+	tag.AddItem(TAG_ALBUM, track.album);
+	tag.AddItem(TAG_DATE, date);
+	tag.AddItem(TAG_COMMENT, comment);
+	tag.SetTime(track.length / 1000);
+
+	return tag.Commit();
+}
+
+struct despotify_session *mpd_despotify_get_session(void)
+{
+	const char *user;
+	const char *passwd;
+	bool high_bitrate;
+
+	if (g_session)
+		return g_session;
+
+	user = config_get_string(CONF_DESPOTIFY_USER, nullptr);
+	passwd = config_get_string(CONF_DESPOTIFY_PASSWORD, nullptr);
+	high_bitrate = config_get_bool(CONF_DESPOTIFY_HIGH_BITRATE, true);
+
+	if (user == nullptr || passwd == nullptr) {
+		LogDebug(despotify_domain,
+			 "disabling despotify because account is not configured");
+		return nullptr;
+	}
+
+	if (!despotify_init()) {
+		LogWarning(despotify_domain, "Can't initialize despotify");
+		return nullptr;
+	}
+
+	g_session = despotify_init_client(callback, nullptr,
+					  high_bitrate, true);
+	if (!g_session) {
+		LogWarning(despotify_domain,
+			   "Can't initialize despotify client");
+		return nullptr;
+	}
+
+	if (!despotify_authenticate(g_session, user, passwd)) {
+		LogWarning(despotify_domain,
+			   "Can't authenticate despotify session");
+		despotify_exit(g_session);
+		return nullptr;
+	}
+
+	return g_session;
+}
diff --git a/src/lib/despotify/DespotifyUtils.hxx b/src/lib/despotify/DespotifyUtils.hxx
new file mode 100644
index 000000000..835b901a2
--- /dev/null
+++ b/src/lib/despotify/DespotifyUtils.hxx
@@ -0,0 +1,71 @@
+/*
+ * Copyright (C) 2003-2014 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.
+ */
+
+#ifndef MPD_DESPOTIFY_H
+#define MPD_DESPOTIFY_H
+
+struct Tag;
+struct despotify_session;
+struct ds_track;
+
+extern const class Domain despotify_domain;
+
+/**
+ * Return the current despotify session.
+ *
+ * If the session isn't initialized, this function will initialize
+ * it and connect to Spotify.
+ *
+ * @return a pointer to the despotify session, or nullptr if it can't
+ *         be initialized (e.g., if the configuration isn't supplied)
+ */
+struct despotify_session *mpd_despotify_get_session(void);
+
+/**
+ * Create a MPD tags structure from a spotify track
+ *
+ * @param track the track to convert
+ *
+ * @return filled in #Tag structure
+ */
+Tag
+mpd_despotify_tag_from_track(const ds_track &track);
+
+/**
+ * Register a despotify callback.
+ *
+ * Despotify calls this e.g., when a track ends.
+ *
+ * @param cb the callback
+ * @param cb_data the data to pass to the callback
+ *
+ * @return true if the callback could be registered
+ */
+bool mpd_despotify_register_callback(void (*cb)(struct despotify_session *, int, void *, void *),
+		void *cb_data);
+
+/**
+ * Unregister a despotify callback.
+ *
+ * @param cb the callback to unregister.
+ */
+void mpd_despotify_unregister_callback(void (*cb)(struct despotify_session *, int, void *, void *));
+
+#endif
+