libs/surfaces/mackie/mackie_port.h

   1 /*
   2         Copyright (C) 2006,2007 John Anderson
   3
   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.
   8
   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.
  13
  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.
  17 */
  18 #ifndef mackie_port_h
  19 #define mackie_port_h
  20
  21 #include <midi++/types.h>
  22 #include <glibmm/thread.h>
  23
  24 #include "pbd/signals.h"
  25
  26 #include "surface_port.h"
  27 #include "midi_byte_array.h"
  28 #include "types.h"
  29
  30 namespace MIDI {
  31         class Port;
  32         class Parser;
  33 }
  34
  35 class MackieControlProtocol;
  36
  37 namespace Mackie
  38 {
  39
  40 class MackiePort : public SurfacePort
  41 {
  42 public:
  43         enum port_type_t { mcu, ext };
  44         enum emulation_t { none, mackie, bcf2000 };
  45
  46         MackiePort (MackieControlProtocol & mcp, MIDI::Port & input_port, MIDI::Port & output_port, int number, port_type_t = mcu);
  47         ~MackiePort();
  48
  49         virtual void open();
  50         virtual void close();
  51
  52         /// MCU and extenders have different sysex headers
  53         virtual const MidiByteArray & sysex_hdr() const;
  54
  55         /// Handle device initialisation
  56         void handle_midi_sysex( MIDI::Parser &, MIDI::byte *, size_t count );
  57
  58         /// Handle all control messags
  59         void handle_midi_any( MIDI::Parser &, MIDI::byte *, size_t count );
  60
  61         Control & lookup_control( MIDI::byte *, size_t count );
  62
  63         /// return the number of strips associated with this port
  64         virtual int strips() const;
  65
  66         /// Block until the port has finished initialising, and then return
  67         /// whether the intialisation succeeded
  68         bool wait_for_init();
  69
  70         emulation_t emulation() const { return _emulation; }
  71
  72         /// Connect the any signal from the parser to handle_midi_any
  73         /// unless it's already connected
  74         void connect_any();
  75
  76 protected:
  77         /**
  78                 The initialisation sequence is fairly complex. First a lock is acquired
  79                 so that a condition can be used to signal the end of the init process.
  80                 Then a sysex is sent to the device. The response to the sysex
  81                 is handled by a switch in handle_midi_sysex which calls one of the
  82                 other methods.
  83
  84                 However, windows DAWs ignore the documented init sequence and so we
  85                 do too. Thanks to Essox for helping with this.
  86
  87                 So we use the version firmware to figure out what device is on
  88                 the other end of the cable.
  89         */
  90         void init();
  91
  92         /**
  93                 Once the device is initialised, finalise_init(true) is called, which
  94                 releases the lock and signals the condition, and starts handling incoming
  95                 messages. finalise_init(false) will also release the lock but doesn't
  96                 start handling messages.
  97         */
  98         void finalise_init( bool yn );
  99
 100         MidiByteArray host_connection_query( MidiByteArray & bytes );
 101         MidiByteArray host_connection_confirmation( const MidiByteArray & bytes );
 102
 103         /**
 104                 Will set _emulation to what it thinks is correct, based
 105                 on responses from the device. Or get/set parameters. Or
 106                 environment variables. Or existence of a file.
 107         */
 108         void probe_emulation( const MidiByteArray & bytes );
 109
 110 private:
 111         MackieControlProtocol & _mcp;
 112         port_type_t _port_type;
 113         PBD::ScopedConnection any_connection;
 114         PBD::ScopedConnection sysex_connection;
 115         emulation_t _emulation;
 116
 117         bool _initialising;
 118         Glib::Cond init_cond;
 119         Glib::Mutex init_mutex;
 120 };
 121
 122 }
 123
 124 #endif