2 Copyright (C) 2006,2007 John Anderson
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
18 #include "mackie_port.h"
20 #include "mackie_control_exception.h"
21 #include "mackie_control_protocol.h"
22 #include "mackie_midi_builder.h"
26 #include <midi++/types.h>
27 #include <midi++/port.h>
28 #include <midi++/alsa_sequencer.h>
29 #include <sigc++/sigc++.h>
30 #include <boost/shared_array.hpp>
31 #include <ardour/configuration.h>
38 using namespace Mackie;
40 // The MCU sysex header
41 MidiByteArray mackie_sysex_hdr ( 5, MIDI::sysex, 0x0, 0x0, 0x66, 0x10 );
43 // The MCU extender sysex header
44 MidiByteArray mackie_sysex_hdr_xt ( 5, MIDI::sysex, 0x0, 0x0, 0x66, 0x11 );
46 MackiePort::MackiePort( MackieControlProtocol & mcp, MIDI::Port & port, int number, port_type_t port_type )
47 : SurfacePort( port, number )
49 , _port_type( port_type )
51 , _initialising( true )
53 cout << "MackiePort::MackiePort" <<endl;
56 MackiePort::~MackiePort()
61 int MackiePort::strips() const
63 if ( _port_type == mcu )
67 // BCF2000 only has 8 faders, so reserve one for master
68 case bcf2000: return 7;
69 case mackie: return 8;
72 throw MackieControlException( "MackiePort::strips: don't know what emulation we're using" );
77 // must be an extender, ie no master fader
82 // should really be in MackiePort
83 void MackiePort::open()
85 cout << "MackiePort::open " << *this << endl;
86 _sysex = port().input()->sysex.connect( ( mem_fun (*this, &MackiePort::handle_midi_sysex) ) );
88 // make sure the device is connected
92 void MackiePort::close()
98 // or emit a "closing" signal
101 const MidiByteArray & MackiePort::sysex_hdr() const
103 switch ( _port_type )
105 case mcu: return mackie_sysex_hdr;
106 case ext: return mackie_sysex_hdr_xt;
108 cout << "MackiePort::sysex_hdr _port_type not known" << endl;
109 return mackie_sysex_hdr;
112 Control & MackiePort::lookup_control( const MidiByteArray & bytes )
114 Control * control = 0;
116 MIDI::byte midi_type = bytes[0] & 0xf0; //0b11110000
120 case MackieMidiBuilder::midi_fader_id:
121 midi_id = bytes[0] & 0x0f;
122 control = _mcp.surface().faders[midi_id];
126 os << "control for fader" << midi_id << " is null";
127 throw MackieControlException( os.str() );
132 case MackieMidiBuilder::midi_button_id:
134 control = _mcp.surface().buttons[midi_id];
138 os << "control for button" << midi_id << " is null";
139 throw MackieControlException( os.str() );
143 // pot (jog wheel, external control)
144 case MackieMidiBuilder::midi_pot_id:
145 midi_id = bytes[1] & 0x1f;
146 control = _mcp.surface().pots[midi_id];
150 os << "control for button" << midi_id << " is null";
151 throw MackieControlException( os.str() );
157 os << "Cannot find control for " << bytes;
158 throw MackieControlException( os.str() );
163 MidiByteArray calculate_challenge_response( MidiByteArray::iterator begin, MidiByteArray::iterator end )
166 back_insert_iterator<MidiByteArray> back ( l );
167 copy( begin, end, back );
169 MidiByteArray retval;
171 // this is how to calculate the response to the challenge.
172 // from the Logic docs.
173 retval << ( 0x7f & ( l[0] + ( l[1] ^ 0xa ) - l[3] ) );
174 retval << ( 0x7f & ( ( l[2] >> l[3] ) ^ ( l[0] + l[3] ) ) );
175 retval << ( 0x7f & ( l[3] - ( l[2] << 2 ) ^ ( l[0] | l[1] ) ) );
176 retval << ( 0x7f & ( l[1] - l[2] + ( 0xf0 ^ ( l[3] << 4 ) ) ) );
181 // not used right now
182 MidiByteArray MackiePort::host_connection_query( MidiByteArray & bytes )
184 // handle host connection query
185 cout << "host connection query: " << bytes << endl;
187 if ( bytes.size() != 18 )
189 finalise_init( false );
191 os << "expecting 18 bytes, read " << bytes << " from " << port().name();
192 throw MackieControlException( os.str() );
195 // build and send host connection reply
196 MidiByteArray response;
198 copy( bytes.begin() + 6, bytes.begin() + 6 + 7, back_inserter( response ) );
199 response << calculate_challenge_response( bytes.begin() + 6 + 7, bytes.begin() + 6 + 7 + 4 );
203 // not used right now
204 MidiByteArray MackiePort::host_connection_confirmation( const MidiByteArray & bytes )
206 cout << "host_connection_confirmation: " << bytes << endl;
208 // decode host connection confirmation
209 if ( bytes.size() != 14 )
211 finalise_init( false );
213 os << "expecting 14 bytes, read " << bytes << " from " << port().name();
214 throw MackieControlException( os.str() );
217 // send version request
218 return MidiByteArray( 2, 0x13, 0x00 );
221 void MackiePort::probe_emulation( const MidiByteArray & bytes )
223 cout << "MackiePort::probe_emulation: " << bytes.size() << ", " << bytes << endl;
224 string version_string;
225 for ( int i = 6; i < 11; ++i ) version_string.append( 1, (char)bytes[i] );
226 cout << "version_string: " << version_string << endl;
228 // TODO investigate using serial number. Also, possibly size of bytes might
229 // give an indication. Also, apparently MCU sends non-documented messages
233 cout << "MackiePort::probe_emulation out of sequence." << endl;
237 // probing doesn't work very well, so just use a config variable
238 // to set the emulation mode
239 bool emulation_ok = false;
240 if ( ARDOUR::Config->get_mackie_emulation() == "bcf" )
242 _emulation = bcf2000;
245 else if ( ARDOUR::Config->get_mackie_emulation() == "mcu" )
252 cout << "unknown mackie emulation: " << ARDOUR::Config->get_mackie_emulation() << endl;
253 emulation_ok = false;
256 finalise_init( emulation_ok );
259 void MackiePort::init()
261 cout << "MackiePort::init" << endl;
263 _initialising = true;
265 cout << "MackiePort::lock acquired" << endl;
266 // emit pre-init signal
269 // kick off initialisation. See docs in header file for init()
270 write_sysex ( MidiByteArray (2, 0x13, 0x00 ));
273 void MackiePort::finalise_init( bool yn )
275 cout << "MackiePort::finalise_init" << endl;
277 SurfacePort::active( yn );
283 // start handling messages from controls
284 _any = port().input()->any.connect( ( mem_fun (*this, &MackiePort::handle_midi_any) ) );
286 _initialising = false;
291 bool MackiePort::wait_for_init()
293 Glib::Mutex::Lock lock( init_mutex );
294 while ( _initialising )
296 cout << "MackiePort::wait_for_active waiting" << endl;
297 init_cond.wait( init_mutex );
298 cout << "MackiePort::wait_for_active released" << endl;
300 cout << "MackiePort::wait_for_active returning" << endl;
301 return SurfacePort::active();
304 void MackiePort::handle_midi_sysex (MIDI::Parser & parser, MIDI::byte * raw_bytes, size_t count )
306 MidiByteArray bytes( count, raw_bytes );
307 cout << "handle_midi_sysex: " << bytes << endl;
311 // not used right now
312 write_sysex( host_connection_query( bytes ) );
315 // not used right now
316 write_sysex( host_connection_confirmation( bytes ) );
320 cout << "host connection error" << bytes << endl;
323 probe_emulation( bytes );
326 cout << "unknown sysex: " << bytes << endl;
330 // converts midi messages into control_event signals
331 void MackiePort::handle_midi_any (MIDI::Parser & parser, MIDI::byte * raw_bytes, size_t count )
333 MidiByteArray bytes( count, raw_bytes );
336 // ignore sysex messages
337 if ( bytes[0] == MIDI::sysex ) return;
339 Control & control = lookup_control( bytes );
341 // This handles incoming bytes. Outgoing bytes
342 // are sent by the signal handlers.
343 switch ( control.type() )
346 case Control::type_fader:
348 // for a BCF2000, max is 7f for high-order byte and 0x70 for low-order byte
349 // According to the Logic docs, these should both be 0x7f.
350 // Although it does mention something about only the top-order
351 // 10 bits out of 14 being used
352 int midi_pos = ( bytes[2] << 7 ) + bytes[1];
353 control_event( *this, control, float(midi_pos) / float(0x3fff) );
358 case Control::type_button:
359 control_event( *this, control, bytes[2] == 0x7f ? press : release );
362 // pot (jog wheel, external control)
363 case Control::type_pot:
367 // bytes[2] & 0b01000000 (0x40) give sign
368 int sign = ( bytes[2] & 0x40 ) == 0 ? 1 : -1;
369 // bytes[2] & 0b00111111 (0x3f) gives delta
370 state.ticks = ( bytes[2] & 0x3f) * sign;
371 state.delta = float( state.ticks ) / float( 0x3f );
373 control_event( *this, control, state );
377 cerr << "Do not understand control type " << control;
380 catch( MackieControlException & e )
382 cout << bytes << ' ' << e.what() << endl;