143 lines
3.7 KiB
C++
143 lines
3.7 KiB
C++
/*********************************************************************************/
|
|
/*!
|
|
@file Bar.cpp
|
|
|
|
@brief xxx.
|
|
|
|
@author L. J. Barman
|
|
|
|
Copyright (c) 2008-2009, 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();
|
|
}
|
|
|
|
int CBar::addDeltaTime(int 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;
|
|
}
|
|
|
|
int CBar::goToBarNumer()
|
|
{
|
|
int ticks;
|
|
|
|
ticks = static_cast<int>((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)
|
|
{
|
|
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();
|
|
}
|