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/*
Copyright (C) 2010 Paul Davis
Author: Carl Hetherington <cth@carlh.net>
This program 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.
This program 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 this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#ifndef EVORAL_PATCH_CHANGE_HPP
#define EVORAL_PATCH_CHANGE_HPP
#include "evoral/visibility.h"
#include "evoral/Event.hpp"
#include "evoral/Event.hpp"
namespace Evoral {
/** Event representing a `patch change', composed of a LSB and MSB
* bank select and then a program change.
*/
template<typename Time>
class /*LIBEVORAL_API*/ PatchChange
{
public:
/** @param t Time.
* @param c Channel.
* @param p Program change number (counted from 0).
* @param b Bank number (counted from 0, 14-bit).
*/
PatchChange (Time t, uint8_t c, uint8_t p, int b)
: _bank_change_msb (MIDI_EVENT, t, 3, 0, true)
, _bank_change_lsb (MIDI_EVENT, t, 3, 0, true)
, _program_change (MIDI_EVENT, t, 2, 0, true)
{
_bank_change_msb.buffer()[0] = MIDI_CMD_CONTROL | c;
_bank_change_msb.buffer()[1] = MIDI_CTL_MSB_BANK;
_bank_change_msb.buffer()[2] = (b >> 7) & 0x7f;
_bank_change_lsb.buffer()[0] = MIDI_CMD_CONTROL | c;
_bank_change_lsb.buffer()[1] = MIDI_CTL_LSB_BANK;
_bank_change_lsb.buffer()[2] = b & 0x7f;
_program_change.buffer()[0] = MIDI_CMD_PGM_CHANGE | c;
_program_change.buffer()[1] = p;
}
PatchChange (const PatchChange & other)
: _bank_change_msb (other._bank_change_msb, true)
, _bank_change_lsb (other._bank_change_lsb, true)
, _program_change (other._program_change, true)
{
set_id (other.id ());
}
event_id_t id () const {
return _program_change.id ();
}
void set_id (event_id_t id) {
_bank_change_msb.set_id (id);
_bank_change_lsb.set_id (id);
_program_change.set_id (id);
}
Time time () const {
return _program_change.time ();
}
void set_time (Time t) {
_bank_change_msb.set_time (t);
_bank_change_lsb.set_time (t);
_program_change.set_time (t);
}
void set_channel (uint8_t c) {
_bank_change_msb.buffer()[0] &= 0xf0;
_bank_change_msb.buffer()[0] |= c;
_bank_change_lsb.buffer()[0] &= 0xf0;
_bank_change_lsb.buffer()[0] |= c;
_program_change.buffer()[0] &= 0xf0;
_program_change.buffer()[0] |= c;
}
uint8_t program () const {
return _program_change.buffer()[1];
}
void set_program (uint8_t p) {
_program_change.buffer()[1] = p;
}
int bank () const {
return (bank_msb() << 7) | bank_lsb();
}
void set_bank (int b) {
_bank_change_msb.buffer()[2] = (b >> 7) & 0x7f;
_bank_change_lsb.buffer()[2] = b & 0x7f;
}
uint8_t bank_msb () const {
return _bank_change_msb.buffer()[2];
}
uint8_t bank_lsb () const {
return _bank_change_lsb.buffer()[2];
}
uint8_t channel () const { return _program_change.buffer()[0] & 0xf; }
inline bool operator< (const PatchChange<Time>& o) const {
if (time() != o.time()) {
return time() < o.time();
}
if (bank() != o.bank()) {
return bank() < o.bank();
}
return (program() < o.program());
}
inline bool operator== (const PatchChange<Time>& o) const {
return (time() == o.time() && program() == o.program() && bank() == o.bank());
}
/** The PatchChange is made up of messages() MIDI messages; this method returns them by index.
* @param i index of message to return.
*/
Event<Time> const & message (int i) const {
switch (i) {
case 0:
return _bank_change_msb;
case 1:
return _bank_change_lsb;
case 2:
return _program_change;
default:
abort(); /*NOTREACHED*/
return _program_change;
}
}
/** @return Number of MIDI messages that make up this change */
int messages () const {
return 3;
}
private:
Event<Time> _bank_change_msb;
Event<Time> _bank_change_lsb;
Event<Time> _program_change;
};
}
template<typename Time>
/*LIBEVORAL_API*/ std::ostream& operator<< (std::ostream& o, const Evoral::PatchChange<Time>& p) {
o << "Patch Change " << p.id() << " @ " << p.time() << " bank " << (int) p.bank() << " program " << (int) p.program();
return o;
}
#endif
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