along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- $Id: midicontrollable.cc 629 2006-06-21 23:01:03Z paul $
*/
#include <cstdio> /* for sprintf, sigh */
#include <pbd/xml++.h>
#include <midi++/port.h>
#include <midi++/channel.h>
+#include <ardour/automation_control.h>
#include "midicontrollable.h"
using namespace PBD;
using namespace ARDOUR;
-bool MIDIControllable::_send_feedback = false;
-
MIDIControllable::MIDIControllable (Port& p, Controllable& c, bool is_bistate)
: controllable (c), _port (p), bistate (is_bistate)
{
setting = false;
- last_written = 0; // got a better idea ?
+ last_value = 0; // got a better idea ?
control_type = none;
_control_description = "MIDI Control: none";
control_additional = (byte) -1;
control_additional = (byte) -1;
}
+float
+MIDIControllable::control_to_midi(float val)
+{
+ float control_min = 0.0f;
+ float control_max = 1.0f;
+ ARDOUR::AutomationControl* ac = dynamic_cast<ARDOUR::AutomationControl*>(&controllable);
+ if (ac) {
+ control_min = ac->parameter().min();
+ control_max = ac->parameter().max();
+ }
+
+ const float control_range = control_max - control_min;
+ const float midi_range = 127.0f; // TODO: NRPN etc.
+
+ return (val - control_min) / control_range * midi_range;
+}
+
+float
+MIDIControllable::midi_to_control(float val)
+{
+ float control_min = 0.0f;
+ float control_max = 1.0f;
+ ARDOUR::AutomationControl* ac = dynamic_cast<ARDOUR::AutomationControl*>(&controllable);
+ if (ac) {
+ control_min = ac->parameter().min();
+ control_max = ac->parameter().max();
+ }
+
+ const float control_range = control_max - control_min;
+ const float midi_range = 127.0f; // TODO: NRPN etc.
+
+ return val / midi_range * control_range + control_min;
+}
+
void
MIDIControllable::midi_sense_note_on (Parser &p, EventTwoBytes *tb)
{
}
void
-MIDIControllable::midi_sense_note (Parser &p, EventTwoBytes *msg, bool is_on)
+MIDIControllable::midi_sense_note (Parser &, EventTwoBytes *msg, bool is_on)
{
if (!bistate) {
controllable.set_value (msg->note_number/127.0);
controllable.set_value (is_on ? 1 : 0);
}
}
+
+ last_value = (MIDI::byte) (controllable.get_value() * 127.0); // to prevent feedback fights
}
void
MIDIControllable::midi_sense_controller (Parser &, EventTwoBytes *msg)
{
+ if (controllable.touching()) {
+ return; // to prevent feedback fights when e.g. dragging a UI slider
+ }
+
if (control_additional == msg->controller_number) {
if (!bistate) {
- controllable.set_value (msg->value/127.0);
+ controllable.set_value (midi_to_control(msg->value));
} else {
if (msg->value > 64.0) {
controllable.set_value (1);
controllable.set_value (0);
}
}
+
+ last_value = (MIDI::byte) (control_to_midi(controllable.get_value())); // to prevent feedback fights
}
}
void
-MIDIControllable::midi_sense_program_change (Parser &p, byte msg)
+MIDIControllable::midi_sense_program_change (Parser &, byte msg)
{
/* XXX program change messages make no sense for bistates */
if (!bistate) {
controllable.set_value (msg/127.0);
+ last_value = (MIDI::byte) (controllable.get_value() * 127.0); // to prevent feedback fights
}
}
void
-MIDIControllable::midi_sense_pitchbend (Parser &p, pitchbend_t pb)
+MIDIControllable::midi_sense_pitchbend (Parser &, pitchbend_t pb)
{
/* pitchbend messages make no sense for bistates */
/* XXX gack - get rid of assumption about typeof pitchbend_t */
controllable.set_value ((pb/(float) SHRT_MAX));
+ last_value = (MIDI::byte) (controllable.get_value() * 127.0); // to prevent feedback fights
}
void
-MIDIControllable::midi_receiver (Parser &p, byte *msg, size_t len)
+MIDIControllable::midi_receiver (Parser &, byte *msg, size_t /*len*/)
{
/* we only respond to channel messages */
{
byte msg[3];
- if (setting || !_send_feedback || control_type == none) {
+ if (setting || !feedback || control_type == none) {
return;
}
-
+
msg[0] = (control_type & 0xF0) | (control_channel & 0xF);
msg[1] = control_additional;
- msg[2] = (byte) (controllable.get_value() * 127.0f);
+ msg[2] = (byte) (control_to_midi(controllable.get_value()));
- _port.write (msg, 3);
+ _port.write (msg, 3, 0);
}
MIDI::byte*
-MIDIControllable::write_feedback (MIDI::byte* buf, int32_t& bufsize, bool force)
+MIDIControllable::write_feedback (MIDI::byte* buf, int32_t& bufsize, bool /*force*/)
{
- if (control_type != none &&_send_feedback && bufsize > 2) {
-
- MIDI::byte gm = (MIDI::byte) (controllable.get_value() * 127.0);
+ if (control_type != none && feedback && bufsize > 2) {
+
+ MIDI::byte gm = (MIDI::byte) (control_to_midi(controllable.get_value()));
- if (gm != last_written) {
+ if (gm != last_value) {
*buf++ = (0xF0 & control_type) | (0xF & control_channel);
*buf++ = control_additional; /* controller number */
*buf++ = gm;
- last_written = gm;
+ last_value = gm;
bufsize -= 3;
}
}
}
int
-MIDIControllable::set_state (const XMLNode& node)
+MIDIControllable::set_state (const XMLNode& node, int version)
{
const XMLProperty* prop;
int xx;
return -1;
}
+ if ((prop = node.property ("feedback")) != 0) {
+ feedback = (prop->value() == "yes");
+ } else {
+ feedback = true; // default
+ }
+
bind_midi (control_channel, control_type, control_additional);
return 0;
node.add_property ("channel", buf);
snprintf (buf, sizeof(buf), "0x%x", (int) control_additional);
node.add_property ("additional", buf);
+ node.add_property ("feedback", (feedback ? "yes" : "no"));
return node;
}
projects / ardour.git / blobdiff