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/*********************************************************************************/
/*!
@file Bar.cpp
@brief xxx.
@author L. J. Barman
Copyright (c) 2008-2013, L. J. Barman, all rights reserved
This file is part of the PianoBooster application
PianoBooster 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 3 of the License, or
(at your option) any later version.
PianoBooster 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 PianoBooster. If not, see <http://www.gnu.org/licenses/>.
*/
/*********************************************************************************/
#include "Bar.h"
#define OPTION_DEBUG_BAR 0
#if OPTION_DEBUG_BAR
#define ppDEBUG_BAR(args) ppLogDebug args
#else
#define ppDEBUG_BAR(args)
#endif
void CBar::setTimeSig(int top, int bottom)
{
m_currentTimeSigTop = top;
m_currentTimeSigBottom = bottom;
if (bottom == 0 || m_startTimeSigBottom == 0) {
m_startTimeSigTop = top;
m_startTimeSigBottom = bottom;
if (bottom == 0 )
{
m_currentTimeSigTop = 4;
m_currentTimeSigBottom = 4;
m_deltaTime = 0;
m_beatCounter = 0;
m_barCounter = 0;
}
}
m_beatLength = (CMidiFile::getPulsesPerQuarterNote() *4)/ m_currentTimeSigBottom;
m_barLength = m_beatLength * getTimeSigTop();
}
qint64 CBar::addDeltaTime(qint64 ticks)
{
if (m_flushTicks == true && ticks != 0) // ignore this set of ticks
{
ppDEBUG_BAR(("addDeltaTime m_flushTicks ticks %d", ticks));
m_flushTicks = false;
return 0;
}
m_deltaTime +=ticks;
if (ticks && m_enablePlayFromBar)
checkGotoBar();
while (m_deltaTime > m_beatLength * SPEED_ADJUST_FACTOR)
{
m_deltaTime -= m_beatLength * SPEED_ADJUST_FACTOR;
m_beatCounter++;
if (m_beatCounter >= m_currentTimeSigTop)
{
m_barCounter++;
m_beatCounter=0;
ppLogDebug("Bar number %d", m_barCounter);
m_eventBits |= EVENT_BITS_newBarNumber;
}
}
return ticks;
}
qint64 CBar::goToBarNumer()
{
const auto ticks = static_cast<qint64>(m_playFromBar - getCurrentBarPos()) * m_beatLength * SPEED_ADJUST_FACTOR + 1;
addDeltaTime(ticks);
return ticks;
}
void CBar::checkGotoBar()
{
double currentBar = getCurrentBarPos();
ppDEBUG_BAR(("checkGotoBar currentBarPos %.1f", currentBar));
if (currentBar < m_playFromBar )
m_seekingBarNumber = true;
else
{
if (m_seekingBarNumber == true)
m_flushTicks = true; // now throw away ticks before we start the music
m_seekingBarNumber = false;
if (m_enableLooping && currentBar > m_playUptoBar )
m_eventBits |= EVENT_BITS_UptoBarReached;
}
}
void CBar::setPlayFromBar(double bar)
{
m_playFromBar = bar;
m_playUptoBar = m_playFromBar + m_loopingBars;
setupEnableFlags();
checkGotoBar();
}
void CBar::setPlayFromBar(int bar, int beat, int ticks)
{
Q_UNUSED(beat)
Q_UNUSED(ticks)
double playFromBar = bar;
setPlayFromBar( playFromBar);
}
void CBar::setPlayUptoBar(double endBar)
{
setLoopingBars(endBar - m_playUptoBar);
}
void CBar::setLoopingBars(double bars)
{
if (bars < 0.0)
bars = 0;
m_loopingBars = bars;
m_playUptoBar = m_playFromBar + m_loopingBars;
setupEnableFlags();
checkGotoBar();
}
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