1 files changed, 131 insertions, 0 deletions
diff --git a/src/player.h b/src/player.h
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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__*/