Rework mediaplayer support to use mpd

Rework the mediaplayer support to replace the stubbed out app
framework agl-service-mediaplayer binding use with driving mpd
(Media Player Daemon) via the libmpdclient library.  Local file
playback behavior should be equivalent to before in an image
with mpd present and suitably configured.  Bluetooth AVRCP
support is still stubbed out, and will be re-implemented with
followup changes.

Bug-AGL: SPEC-4182

Signed-off-by: Scott Murray <scott.murray@konsulko.com>
Change-Id: Ifdf092b472c271460d0f5e9a8c7d2353904411b2

1 files changed, 72 insertions, 0 deletions

diff --git a/mediaplayer/MediaplayerMpdBackend.h b/mediaplayer/MediaplayerMpdBackend.h
new file mode 100644
index 0000000..b181fda
--- /dev/null
+++ b/mediaplayer/MediaplayerMpdBackend.h
@@ -0,0 +1,72 @@
+/*
+ * Copyright (C) 2022 Konsulko Group
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef MEDIAPLAYER_MPD_BACKEND_H
+#define MEDIAPLAYER_MPD_BACKEND_H
+
+#include <QObject>
+#include <QtQml/QQmlContext>
+#include <QThread>
+#include <QTimer>
+#include <QMutex>
+#include <mpd/client.h>
+#include "mediaplayer.h"
+
+class MediaplayerMpdBackend : public QObject
+{
+	Q_OBJECT
+
+public:
+	explicit MediaplayerMpdBackend(Mediaplayer *player, QQmlContext *context, QObject * parent = Q_NULLPTR);
+	virtual ~MediaplayerMpdBackend();
+
+	void play();
+	void pause();
+	void previous();
+	void next();
+	void seek(int);
+	void fastforward(int);
+	void rewind(int);
+	void picktrack(int);
+	void volume(int);
+	void loop(QString);
+
+signals:
+	void start(void);
+
+private:
+	Mediaplayer *m_player;
+
+	// MPD connection for sending commands
+	struct mpd_connection *m_mpd_conn;
+	QTimer *m_mpd_conn_timer;
+	QMutex m_mpd_conn_mutex;
+
+	int m_queue_pos = -1;
+	int m_song_pos_ms = 0;
+	bool m_playing = false;
+	QTimer *m_song_pos_timer;
+	QMutex m_state_mutex;
+
+	QThread m_handlerThread;
+
+private slots:
+	void connectionKeepaliveTimeout(void);
+	void songPositionTimeout(void);
+        void updatePlaybackState(int queue_pos, int song_pos_ms, bool state);
+};
+
+#endif // MEDIAPLAYER_MPD_BACKEND_H