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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
+
+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(100);
+ }
+ }
+}
+
+CanvasToolListen::CanvasToolListen(Canvas *c)
+ : player(c)
+{
+ canvas = c ;
+ player.start();
+}
+
+bool CanvasToolListen::mousePressEvent(QMouseEvent *event)
+{
+ player.pos = canvas->unmapX(event->x());
+ player.playing = true;
+ return true;
+}
+
+bool CanvasToolListen::mouseReleaseEvent(QMouseEvent *event)
+{
+ player.playing = false;
+ 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());
+ }
+}