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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__*/
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