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+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/***************************************************************************
+ * player.h
+ *
+ * Tue Apr 15 10:34:18 CEST 2014
+ * Copyright 2014 Bent Bisballe Nyeng
+ * deva@aasimon.org
+ ****************************************************************************/
+
+/*
+ * This file is part of DrumGizmo.
+ *
+ * DrumGizmo 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.
+ *
+ * DrumGizmo 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 DrumGizmo; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+ */
+#ifndef __DRUMGIZMO_PLAYER_H__
+#define __DRUMGIZMO_PLAYER_H__
+
+#include <QThread>
+#include <QTimer>
+#include <QMutex>
+
+#include <ao/ao.h>
+
+#include "selection.h"
+
+class Player : public QThread {
+Q_OBJECT
+public:
+ Player();
+ ~Player();
+
+ void run();
+
+ // TODO: Make these private.
+ // These two need to be public in order for the ugly hack in
+ // CanvasToolListen::playRange to work...
+ // volatile bool playing;
+ volatile size_t pos;
+ volatile size_t end;
+
+public slots:
+ /**
+ * Assign PCM data to the player.
+ */
+ void setPcmData(float *data, size_t num_samples);
+
+ /**
+ * Set gain scalar.
+ * This value is multiplied with each sample before it is played.
+ */
+ void setGainScalar(double gain_scalar);
+
+ /**
+ * Set gain is dB.
+ * Convenience method for setGainScalar. It simple recalculates the dB value
+ * to a scalar and sets the gain scalar accordingly.
+ */
+ void setGainDB(double gain_db);
+
+ /**
+ * Set player position as sample offset.
+ */
+ void setPosition(size_t position);
+
+ /**
+ * Play range based on selection including fade-in/out.
+ * @param length Stop playing after length samples. -1 means play all.
+ */
+ void playSelection(Selection selection, int length = -1);
+
+ /**
+ * Return true if last selection is done playing.
+ */
+ bool playSelectionDone();
+
+ /**
+ * Stop playing
+ */
+ void stop();
+
+signals:
+ /**
+ * The absolute maximum of samples seen since last update.
+ */
+ void peakUpdate(double peak);
+
+ /**
+ * The absolute maximum of samples seen since last update in dB.
+ */
+ void peakUpdateDB(double peak_db);
+
+ /**
+ * The sample position of the player.
+ */
+ void positionUpdate(size_t position);
+
+private slots:
+ void reportTimeout();
+
+private:
+ ao_device *dev;
+
+ float *pcm_data;
+ size_t pcm_size;
+
+ QTimer report_timer;
+
+ double gain_scalar;
+ double peak;
+
+ bool running;
+
+ QMutex mutex;
+ volatile bool new_selection;
+ size_t sel_end;
+ Selection selection;
+};
+
+#endif/*__DRUMGIZMO_PLAYER_H__*/