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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/***************************************************************************
* canvastoollisten.cc
*
* Fri Jul 29 16:57:48 CEST 2011
* Copyright 2011 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.
*/
#include "canvastoollisten.h"
#define BUFSZ 1024 * 2
Player::Player(Canvas *c)
{
canvas = c;
playing = false;
pos = 0;
ao_initialize();
ao_sample_format sf;
sf.bits = 16;
sf.rate = 44100;
sf.channels = 1;
sf.byte_format = AO_FMT_NATIVE;
dev = ao_open_live(ao_default_driver_id(), &sf, 0);
}
Player::~Player()
{
ao_close(dev);
ao_shutdown();
}
void Player::run()
{
while(true) {
if(playing) {
short s[BUFSZ];
for(size_t i = 0; i < BUFSZ; i++) {
if(i + pos < canvas->size) s[i] = canvas->data[pos + i] * ((2<<16) - 1);
else {
s[i] = 0;
playing = false;
}
}
ao_play(dev, (char*)s, BUFSZ * sizeof(short));
// canvas->update();
pos += BUFSZ;
} else {
msleep(22);
}
}
}
CanvasToolListen::CanvasToolListen(Canvas *c)
: player(c)
{
lastpos = 0;
canvas = c ;
player.start();
QObject::connect(&timer, SIGNAL(timeout()), this, SLOT(update()));
}
bool CanvasToolListen::mousePressEvent(QMouseEvent *event)
{
player.pos = canvas->unmapX(event->x());
player.playing = true;
canvas->update();
timer.start(50);
return true;
}
bool CanvasToolListen::mouseReleaseEvent(QMouseEvent *event)
{
player.playing = false;
timer.stop();
lastpos = 0;
canvas->update();
return true;
}
void CanvasToolListen::paintEvent(QPaintEvent *event, QPainter &painter)
{
if(player.playing) {
painter.setPen(QColor(0, 127, 127));
painter.drawLine(canvas->mapX(player.pos),
event->rect().y(),
canvas->mapX(player.pos),
event->rect().y() + event->rect().height());
}
}
void CanvasToolListen::update()
{
size_t pos = player.pos;
size_t last = canvas->mapX(lastpos);
size_t x = canvas->mapX(player.pos);
QRect r(last, 0,
x - last + 2, canvas->height());
canvas->update(r);
lastpos = pos;
}
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