275 lines
6.7 KiB
C++
275 lines
6.7 KiB
C++
/*
|
|
Copyright (C) 1998-99 Paul Barton-Davis
|
|
|
|
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.
|
|
|
|
$Id$
|
|
*/
|
|
|
|
#include <cstring>
|
|
#include "midi++/types.h"
|
|
#include "midi++/port.h"
|
|
#include "midi++/channel.h"
|
|
|
|
using namespace MIDI;
|
|
|
|
Channel::Channel (MIDI::byte channelnum, Port &p)
|
|
: _port (p)
|
|
{
|
|
_channel_number = channelnum;
|
|
|
|
reset (0, 1, false);
|
|
}
|
|
|
|
void
|
|
Channel::connect_signals ()
|
|
{
|
|
_port.parser()->channel_pressure[_channel_number].connect_same_thread (*this, boost::bind (&Channel::process_chanpress, this, _1, _2));
|
|
_port.parser()->channel_note_on[_channel_number].connect_same_thread (*this, boost::bind (&Channel::process_note_on, this, _1, _2));
|
|
_port.parser()->channel_note_off[_channel_number].connect_same_thread (*this, boost::bind (&Channel::process_note_off, this, _1, _2));
|
|
_port.parser()->channel_poly_pressure[_channel_number].connect_same_thread (*this, boost::bind (&Channel::process_polypress, this, _1, _2));
|
|
_port.parser()->channel_program_change[_channel_number].connect_same_thread (*this, boost::bind (&Channel::process_program_change, this, _1, _2));
|
|
_port.parser()->channel_controller[_channel_number].connect_same_thread (*this, boost::bind (&Channel::process_controller, this, _1, _2));
|
|
_port.parser()->channel_pitchbend[_channel_number].connect_same_thread (*this, boost::bind (&Channel::process_pitchbend, this, _1, _2));
|
|
|
|
_port.parser()->reset.connect_same_thread (*this, boost::bind (&Channel::process_reset, this, _1));
|
|
}
|
|
|
|
void
|
|
Channel::reset (timestamp_t timestamp, framecnt_t /*nframes*/, bool notes_off)
|
|
{
|
|
_program_number = _channel_number;
|
|
_bank_number = 0;
|
|
_pitch_bend = 0;
|
|
|
|
_last_note_on = 0;
|
|
_last_note_off = 0;
|
|
_last_on_velocity = 0;
|
|
_last_off_velocity = 0;
|
|
|
|
if (notes_off) {
|
|
all_notes_off (timestamp);
|
|
}
|
|
|
|
memset (_polypress, 0, sizeof (_polypress));
|
|
memset (_controller_msb, 0, sizeof (_controller_msb));
|
|
memset (_controller_lsb, 0, sizeof (_controller_lsb));
|
|
|
|
/* zero all controllers XXX not necessarily the right thing */
|
|
|
|
memset (_controller_val, 0, sizeof (_controller_val));
|
|
|
|
for (int n = 0; n < 128; n++) {
|
|
_controller_14bit[n] = false;
|
|
}
|
|
|
|
_rpn_msb = 0;
|
|
_rpn_lsb = 0;
|
|
_nrpn_msb = 0;
|
|
_nrpn_lsb = 0;
|
|
|
|
_omni = true;
|
|
_poly = false;
|
|
_mono = true;
|
|
_notes_on = 0;
|
|
}
|
|
|
|
void
|
|
Channel::process_note_off (Parser & /*parser*/, EventTwoBytes *tb)
|
|
{
|
|
_last_note_off = tb->note_number;
|
|
_last_off_velocity = tb->velocity;
|
|
|
|
if (_notes_on) {
|
|
_notes_on--;
|
|
}
|
|
}
|
|
|
|
void
|
|
Channel::process_note_on (Parser & /*parser*/, EventTwoBytes *tb)
|
|
{
|
|
_last_note_on = tb->note_number;
|
|
_last_on_velocity = tb->velocity;
|
|
_notes_on++;
|
|
}
|
|
|
|
void
|
|
Channel::process_controller (Parser & /*parser*/, EventTwoBytes *tb)
|
|
{
|
|
unsigned short cv;
|
|
|
|
/* XXX arguably need a lock here to protect non-atomic changes
|
|
to controller_val[...]. or rather, need to make sure that
|
|
all changes *are* atomic.
|
|
*/
|
|
|
|
if (tb->controller_number < 32) { /* unsigned: no test for >= 0 */
|
|
|
|
/* if this controller is already known to use 14 bits,
|
|
then treat this value as the MSB, and combine it
|
|
with the existing LSB.
|
|
|
|
otherwise, just treat it as a 7 bit value, and set
|
|
it directly.
|
|
*/
|
|
|
|
cv = (unsigned short) _controller_val[tb->controller_number];
|
|
|
|
if (_controller_14bit[tb->controller_number]) {
|
|
cv = ((tb->value & 0x7f) << 7) | (cv & 0x7f);
|
|
} else {
|
|
cv = tb->value;
|
|
}
|
|
|
|
_controller_val[tb->controller_number] = (controller_value_t)cv;
|
|
|
|
} else if ((tb->controller_number >= 32 &&
|
|
tb->controller_number <= 63)) {
|
|
|
|
int cn = tb->controller_number - 32;
|
|
|
|
cv = (unsigned short) _controller_val[cn];
|
|
|
|
/* LSB for CC 0-31 arrived.
|
|
|
|
If this is the first time (i.e. its currently
|
|
flagged as a 7 bit controller), mark the
|
|
controller as 14 bit, adjust the existing value
|
|
to be the MSB, and OR-in the new LSB value.
|
|
|
|
otherwise, OR-in the new low 7bits with the old
|
|
high 7.
|
|
*/
|
|
|
|
|
|
if (_controller_14bit[cn] == false) {
|
|
_controller_14bit[cn] = true;
|
|
cv = (cv << 7) | (tb->value & 0x7f);
|
|
} else {
|
|
cv = (cv & 0x3f80) | (tb->value & 0x7f);
|
|
}
|
|
|
|
/* update the 14 bit value */
|
|
_controller_val[cn] = (controller_value_t) cv;
|
|
|
|
/* also store the "raw" 7 bit value in the incoming controller
|
|
value store
|
|
*/
|
|
_controller_val[tb->controller_number] = (controller_value_t) tb->value;
|
|
|
|
} else {
|
|
|
|
/* controller can only take 7 bit values */
|
|
|
|
_controller_val[tb->controller_number] =
|
|
(controller_value_t) tb->value;
|
|
}
|
|
|
|
/* bank numbers are special, in that they have their own signal
|
|
*/
|
|
|
|
if (tb->controller_number == 0 || tb->controller_number == 0x20) {
|
|
_bank_number = _controller_val[0];
|
|
_port.parser()->bank_change (*_port.parser(), _bank_number);
|
|
_port.parser()->channel_bank_change[_channel_number] (*_port.parser(), _bank_number);
|
|
}
|
|
}
|
|
|
|
void
|
|
Channel::process_program_change (Parser & /*parser*/, MIDI::byte val)
|
|
{
|
|
_program_number = val;
|
|
}
|
|
|
|
void
|
|
Channel::process_chanpress (Parser & /*parser*/, MIDI::byte val)
|
|
{
|
|
_chanpress = val;
|
|
}
|
|
|
|
void
|
|
Channel::process_polypress (Parser & /*parser*/, EventTwoBytes *tb)
|
|
{
|
|
_polypress[tb->note_number] = tb->value;
|
|
}
|
|
|
|
void
|
|
Channel::process_pitchbend (Parser & /*parser*/, pitchbend_t val)
|
|
{
|
|
_pitch_bend = val;
|
|
}
|
|
|
|
void
|
|
Channel::process_reset (Parser & /*parser*/)
|
|
{
|
|
reset (0, 1);
|
|
}
|
|
|
|
/** Write a message to a channel.
|
|
* \return true if success
|
|
*/
|
|
bool
|
|
Channel::channel_msg (MIDI::byte id, MIDI::byte val1, MIDI::byte val2, timestamp_t timestamp)
|
|
{
|
|
unsigned char msg[3];
|
|
int len = 0;
|
|
|
|
msg[0] = id | (_channel_number & 0xf);
|
|
|
|
switch (id) {
|
|
case off:
|
|
msg[1] = val1 & 0x7F;
|
|
msg[2] = val2 & 0x7F;
|
|
len = 3;
|
|
break;
|
|
|
|
case on:
|
|
msg[1] = val1 & 0x7F;
|
|
msg[2] = val2 & 0x7F;
|
|
len = 3;
|
|
break;
|
|
|
|
case MIDI::polypress:
|
|
msg[1] = val1 & 0x7F;
|
|
msg[2] = val2 & 0x7F;
|
|
len = 3;
|
|
break;
|
|
|
|
case controller:
|
|
msg[1] = val1 & 0x7F;
|
|
msg[2] = val2 & 0x7F;
|
|
len = 3;
|
|
break;
|
|
|
|
case MIDI::program:
|
|
msg[1] = val1 & 0x7F;
|
|
len = 2;
|
|
break;
|
|
|
|
case MIDI::chanpress:
|
|
msg[1] = val1 & 0x7F;
|
|
len = 2;
|
|
break;
|
|
|
|
case MIDI::pitchbend:
|
|
msg[1] = val1 & 0x7F;
|
|
msg[2] = val2 & 0x7F;
|
|
len = 3;
|
|
break;
|
|
}
|
|
|
|
return _port.midimsg (msg, len, timestamp);
|
|
}
|