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livetrax/libs/surfaces/faderport/faderport_midi_protocol.cc

271 lines
6.6 KiB
C++

/*
Copyright (C) 2006 Paul 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.
*/
#include <stdint.h>
#include <sstream>
#include <algorithm>
#include <glibmm/fileutils.h>
#include <glibmm/miscutils.h>
#include "pbd/controllable_descriptor.h"
#include "pbd/error.h"
#include "pbd/failed_constructor.h"
#include "pbd/file_utils.h"
#include "pbd/xml++.h"
#include "pbd/compose.h"
#include "midi++/port.h"
#include "ardour/audioengine.h"
#include "ardour/filesystem_paths.h"
#include "ardour/session.h"
#include "ardour/route.h"
#include "ardour/midi_ui.h"
#include "ardour/midi_port.h"
#include "ardour/rc_configuration.h"
#include "ardour/midiport_manager.h"
#include "ardour/debug.h"
#include "ardour/async_midi_port.h"
#include "faderport_midi_protocol.h"
using namespace ARDOUR;
using namespace PBD;
using namespace Glib;
using namespace std;
#include "i18n.h"
#define midi_ui_context() MidiControlUI::instance() /* a UICallback-derived object that specifies the event loop for signal handling */
FaderportMidiControlProtocol::FaderportMidiControlProtocol (Session& s)
: ControlProtocol (s, _("Faderport"))
, _motorised (true)
, _threshold (10)
, gui (0)
{
_async_in = AudioEngine::instance()->register_input_port (DataType::MIDI, "Faderport Recv", true);
_async_out = AudioEngine::instance()->register_output_port (DataType::MIDI, "Faderport Send", true);
if (_async_in == 0 || _async_out == 0) {
throw failed_constructor();
}
_input_port = boost::dynamic_pointer_cast<AsyncMIDIPort>(_async_in).get();
_output_port = boost::dynamic_pointer_cast<AsyncMIDIPort>(_async_out).get();
do_feedback = false;
_feedback_interval = 10 * 1000; // microseconds
last_feedback_time = 0;
native_counter = 0;
_current_bank = 0;
_bank_size = 0;
//NOTE TO PAUL:
// "midi_receiver" and "midi_input_handler"
// were 2 different approaches to try to capture MIDI data; neither seems to work as expected.
//not sure if this should do anything
(*_input_port).parser()->any.connect_same_thread (midi_recv_connection, boost::bind (&FaderportMidiControlProtocol::midi_receiver, this, _1, _2, _3));
//this is raw port acces (?)
// _input_port->xthread().set_receive_handler (sigc::bind (sigc::mem_fun (this, &FaderportMidiControlProtocol::midi_input_handler), _input_port));
Session::SendFeedback.connect_same_thread (*this, boost::bind (&FaderportMidiControlProtocol::send_feedback, this));
//Session::SendFeedback.connect (*this, MISSING_INVALIDATOR, boost::bind (&FaderportMidiControlProtocol::send_feedback, this), midi_ui_context());;
/* this one is cross-thread */
//Route::RemoteControlIDChange.connect (*this, MISSING_INVALIDATOR, boost::bind (&FaderportMidiControlProtocol::reset_controllables, this), midi_ui_context());
}
FaderportMidiControlProtocol::~FaderportMidiControlProtocol ()
{
if (_input_port) {
DEBUG_TRACE (DEBUG::GenericMidi, string_compose ("unregistering input port %1\n", _async_in->name()));
AudioEngine::instance()->unregister_port (_async_in);
_async_in.reset ((ARDOUR::Port*) 0);
}
if (_output_port) {
// _output_port->drain (10000); //ToDo: is this necessary? It hangs the shutdown, for me
DEBUG_TRACE (DEBUG::GenericMidi, string_compose ("unregistering output port %1\n", _async_out->name()));
AudioEngine::instance()->unregister_port (_async_out);
_async_out.reset ((ARDOUR::Port*) 0);
}
tear_down_gui ();
}
void
FaderportMidiControlProtocol::midi_receiver (MIDI::Parser &p, MIDI::byte *, size_t)
{
//NOTE: this never did anything
// printf("got some midi\n");
}
int
FaderportMidiControlProtocol::set_active (bool /*yn*/)
{
return 0;
}
void
FaderportMidiControlProtocol::set_feedback_interval (microseconds_t ms)
{
_feedback_interval = ms;
}
void
FaderportMidiControlProtocol::send_feedback ()
{
/* This is executed in RT "process" context", so no blocking calls
*/
if (!do_feedback) {
return;
}
microseconds_t now = get_microseconds ();
if (last_feedback_time != 0) {
if ((now - last_feedback_time) < _feedback_interval) {
return;
}
}
//occasionally tell the Faderport to go into "Native" mode
//ToDo: trigger this on MIDI port connection ?
native_counter++;
if (native_counter > 10) {
native_counter = 0;
MIDI::byte midibuf[64];
MIDI::byte *buf = midibuf;
*buf++ = (0x91);
*buf++ = (0x00);
*buf++ = (0x64);
_output_port->write (buf, 3, 0);
}
last_feedback_time = now;
}
bool
FaderportMidiControlProtocol::midi_input_handler (Glib::IOCondition ioc, ARDOUR::AsyncMIDIPort* port)
{
DEBUG_TRACE (DEBUG::MidiIO, string_compose ("something happend on %1\n", ((ARDOUR::Port*)port)->name()));
if (ioc & ~IO_IN) {
return false;
}
if (ioc & IO_IN) {
AsyncMIDIPort* asp = dynamic_cast<AsyncMIDIPort*> (port);
if (asp) {
asp->clear ();
}
DEBUG_TRACE (DEBUG::MidiIO, string_compose ("data available on %1\n", ((ARDOUR::Port*)port)->name()));
// framepos_t now = _session.engine().sample_time();
// port->parse (now);
}
return true;
}
XMLNode&
FaderportMidiControlProtocol::get_state ()
{
XMLNode& node (ControlProtocol::get_state());
char buf[32];
return node;
}
int
FaderportMidiControlProtocol::set_state (const XMLNode& node, int version)
{
XMLNodeList nlist;
XMLNodeConstIterator niter;
const XMLProperty* prop;
if (ControlProtocol::set_state (node, version)) {
return -1;
}
return 0;
}
int
FaderportMidiControlProtocol::set_feedback (bool yn)
{
do_feedback = yn;
last_feedback_time = 0;
return 0;
}
bool
FaderportMidiControlProtocol::get_feedback () const
{
return do_feedback;
}
void
FaderportMidiControlProtocol::set_current_bank (uint32_t b)
{
_current_bank = b;
// reset_controllables ();
}
void
FaderportMidiControlProtocol::next_bank ()
{
_current_bank++;
// reset_controllables ();
}
void
FaderportMidiControlProtocol::prev_bank()
{
if (_current_bank) {
_current_bank--;
// reset_controllables ();
}
}
void
FaderportMidiControlProtocol::set_motorised (bool m)
{
_motorised = m;
}
void
FaderportMidiControlProtocol::set_threshold (int t)
{
_threshold = t;
}