void
midibus::init_clock (midipulse tick)
{
#ifdef SEQ64_HAVE_LIBASOUND
if (m_clock_type == e_clock_pos && tick != 0)
{
continue_from(tick);
}
else if (m_clock_type == e_clock_mod || tick == 0)
{
start();
/*
* The next equation is effectively (m_ppqn / 4) * 16 * 4,
* or m_ppqn * 16. Note that later we have pp16th = (m_ppqn / 4).
*/
midipulse clock_mod_ticks = (m_ppqn / 4) * m_clock_mod;
midipulse leftover = (tick % clock_mod_ticks);
midipulse starting_tick = tick - leftover;
/*
* Was there anything left? Then wait for next beat (16th note)
* to start clocking.
*/
if (leftover > 0)
starting_tick += clock_mod_ticks;
m_lasttick = starting_tick - 1;
}
#endif // SEQ64_HAVE_LIBASOUND
}
void
midibus::init_clock( long a_tick )
{
if ( m_clock_type == e_clock_pos && a_tick != 0)
{
continue_from( a_tick );
}
else
if ( m_clock_type == e_clock_mod || a_tick == 0)
{
start();
long clock_mod_ticks = (c_ppqn / 4) * m_clock_mod;
long leftover = ( a_tick % clock_mod_ticks );
long starting_tick = a_tick - leftover;
/* was there anything left?, then wait for next beat (16th note) to start clocking */
if ( leftover > 0)
{
starting_tick += clock_mod_ticks;
}
//printf ( "continue_from leftover[%ld] starting_tick[%ld]\n", leftover, starting_tick );
m_lasttick = starting_tick - 1;
}
}
void
midibus::init_clock (long a_tick)
{
#ifdef HAVE_LIBASOUND
if (m_clock_type == e_clock_pos && a_tick != 0)
{
continue_from(a_tick);
}
else if (m_clock_type == e_clock_mod || a_tick == 0)
{
start();
long clock_mod_ticks = (c_ppqn / 4) * m_clock_mod;
long leftover = (a_tick % clock_mod_ticks);
long starting_tick = a_tick - leftover;
/*
* Was there anything left? Then wait for next beat (16th note)
* to start clocking.
*/
if (leftover > 0)
starting_tick += clock_mod_ticks;
m_lasttick = starting_tick - 1;
}
#endif // HAVE_LIBASOUND
}
