libs/ardour/ardour/midi_model.h

   1 /*
   2     Copyright (C) 2007 Paul Davis
   3     Author: Dave Robillard
   4
   5     This program is free software; you can redistribute it and/or modify
   6     it under the terms of the GNU General Public License as published by
   7     the Free Software Foundation; either version 2 of the License, or
   8     (at your option) any later version.
   9
  10     This program is distributed in the hope that it will be useful,
  11     but WITHOUT ANY WARRANTY; without even the implied warranty of
  12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13     GNU General Public License for more details.
  14
  15     You should have received a copy of the GNU General Public License
  16     along with this program; if not, write to the Free Software
  17     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  18
  19 */
  20
  21 #ifndef __ardour_midi_model_h__
  22 #define __ardour_midi_model_h__
  23
  24 #include <queue>
  25 #include <deque>
  26 #include <utility>
  27 #include <boost/utility.hpp>
  28 #include <glibmm/thread.h>
  29 #include "pbd/command.h"
  30 #include "ardour/types.h"
  31 #include "ardour/midi_buffer.h"
  32 #include "ardour/midi_ring_buffer.h"
  33 #include "ardour/automatable_sequence.h"
  34 #include "ardour/types.h"
  35 #include "evoral/Note.hpp"
  36 #include "evoral/Sequence.hpp"
  37
  38 namespace ARDOUR {
  39
  40 class Session;
  41 class MidiSource;
  42
  43 /** This is a higher level (than MidiBuffer) model of MIDI data, with separate
  44  * representations for notes (instead of just unassociated note on/off events)
  45  * and controller data.  Controller data is represented as part of the
  46  * Automatable base (i.e. in a map of AutomationList, keyed by Parameter).
  47  * Because of this MIDI controllers and automatable controllers/widgets/etc
  48  * are easily interchangeable.
  49  */
  50 class MidiModel : public AutomatableSequence<Evoral::MusicalTime> {
  51 public:
  52         typedef Evoral::MusicalTime TimeType;
  53
  54         MidiModel (boost::shared_ptr<MidiSource>);
  55
  56         NoteMode note_mode() const { return (percussive() ? Percussive : Sustained); }
  57         void set_note_mode(NoteMode mode) { set_percussive(mode == Percussive); };
  58
  59         class DiffCommand : public Command {
  60         public:
  61
  62                 DiffCommand (boost::shared_ptr<MidiModel> m, const std::string& name);
  63
  64                 const std::string& name () const { return _name; }
  65
  66                 virtual void operator() () = 0;
  67                 virtual void undo () = 0;
  68
  69                 virtual int set_state (const XMLNode&, int version) = 0;
  70                 virtual XMLNode & get_state () = 0;
  71
  72                 boost::shared_ptr<MidiModel> model() const { return _model; }
  73
  74         protected:
  75                 boost::shared_ptr<MidiModel> _model;
  76                 const std::string            _name;
  77
  78         };
  79
  80         class NoteDiffCommand : public DiffCommand {
  81         public:
  82
  83                 NoteDiffCommand (boost::shared_ptr<MidiModel> m, const std::string& name) : DiffCommand (m, name) {}
  84                 NoteDiffCommand (boost::shared_ptr<MidiModel> m, const XMLNode& node);
  85
  86                 enum Property {
  87                         NoteNumber,
  88                         Velocity,
  89                         StartTime,
  90                         Length,
  91                         Channel
  92                 };
  93
  94                 void operator() ();
  95                 void undo ();
  96
  97                 int set_state (const XMLNode&, int version);
  98                 XMLNode & get_state ();
  99
 100                 void add (const NotePtr note);
 101                 void remove (const NotePtr note);
 102                 void side_effect_remove (const NotePtr note);
 103
 104                 void change (const NotePtr note, Property prop, uint8_t new_value);
 105                 void change (const NotePtr note, Property prop, TimeType new_time);
 106
 107                 bool adds_or_removes() const {
 108                         return !_added_notes.empty() || !_removed_notes.empty();
 109                 }
 110
 111                 NoteDiffCommand& operator+= (const NoteDiffCommand& other);
 112
 113           private:
 114                 struct NoteChange {
 115                         NoteDiffCommand::Property property;
 116                         NotePtr note;
 117                         union {
 118                                 uint8_t  old_value;
 119                                 TimeType old_time;
 120                         };
 121                         union {
 122                                 uint8_t  new_value;
 123                                 TimeType new_time;
 124                         };
 125                 };
 126
 127                 typedef std::list<NoteChange> ChangeList;
 128                 ChangeList _changes;
 129
 130                 typedef std::list< boost::shared_ptr< Evoral::Note<TimeType> > > NoteList;
 131                 NoteList _added_notes;
 132                 NoteList _removed_notes;
 133
 134                 std::set<NotePtr> side_effect_removals;
 135
 136                 XMLNode &marshal_change(const NoteChange&);
 137                 NoteChange unmarshal_change(XMLNode *xml_note);
 138
 139                 XMLNode &marshal_note(const NotePtr note);
 140                 NotePtr unmarshal_note(XMLNode *xml_note);
 141         };
 142
 143         /* Currently this class only supports changes of sys-ex time, but could be expanded */
 144         class SysExDiffCommand : public DiffCommand {
 145         public:
 146                 SysExDiffCommand (boost::shared_ptr<MidiModel> m, const XMLNode& node);
 147
 148                 enum Property {
 149                         Time,
 150                 };
 151
 152                 int set_state (const XMLNode&, int version);
 153                 XMLNode & get_state ();
 154
 155                 void operator() ();
 156                 void undo ();
 157
 158                 void change (boost::shared_ptr<Evoral::Event<TimeType> >, TimeType);
 159
 160         private:
 161                 struct Change {
 162                         boost::shared_ptr<Evoral::Event<TimeType> > sysex;
 163                         SysExDiffCommand::Property property;
 164                         TimeType old_time;
 165                         TimeType new_time;
 166                 };
 167
 168                 typedef std::list<Change> ChangeList;
 169                 ChangeList _changes;
 170
 171                 XMLNode & marshal_change (const Change &);
 172                 Change unmarshal_change (XMLNode *);
 173         };
 174
 175         class PatchChangeDiffCommand : public DiffCommand {
 176         public:
 177                 PatchChangeDiffCommand (boost::shared_ptr<MidiModel>, const std::string &);
 178                 PatchChangeDiffCommand (boost::shared_ptr<MidiModel>, const XMLNode &);
 179
 180                 int set_state (const XMLNode &, int version);
 181                 XMLNode & get_state ();
 182
 183                 void operator() ();
 184                 void undo ();
 185
 186                 void add (PatchChangePtr);
 187                 void remove (PatchChangePtr);
 188                 void change_time (PatchChangePtr, TimeType);
 189                 void change_channel (PatchChangePtr, uint8_t);
 190                 void change_program (PatchChangePtr, uint8_t);
 191                 void change_bank (PatchChangePtr, int);
 192
 193                 enum Property {
 194                         Time,
 195                         Channel,
 196                         Program,
 197                         Bank
 198                 };
 199
 200         private:
 201
 202                 struct Change {
 203                         PatchChangePtr patch;
 204                         Property property;
 205                         union {
 206                                 TimeType old_time;
 207                                 uint8_t old_channel;
 208                                 int old_bank;
 209                                 uint8_t old_program;
 210                         };
 211                         union {
 212                                 uint8_t new_channel;
 213                                 TimeType new_time;
 214                                 uint8_t new_program;
 215                                 int new_bank;
 216                         };
 217                 };
 218
 219                 typedef std::list<Change> ChangeList;
 220                 ChangeList _changes;
 221
 222                 std::list<PatchChangePtr> _added;
 223                 std::list<PatchChangePtr> _removed;
 224
 225                 XMLNode & marshal_change (const Change &);
 226                 Change unmarshal_change (XMLNode *);
 227
 228                 XMLNode & marshal_patch_change (constPatchChangePtr);
 229                 PatchChangePtr unmarshal_patch_change (XMLNode *);
 230         };
 231
 232         MidiModel::NoteDiffCommand* new_note_diff_command (const std::string name = "midi edit");
 233         MidiModel::SysExDiffCommand* new_sysex_diff_command (const std::string name = "midi edit");
 234         MidiModel::PatchChangeDiffCommand* new_patch_change_diff_command (const std::string name = "midi edit");
 235         void apply_command (Session& session, Command* cmd);
 236         void apply_command_as_subcommand (Session& session, Command* cmd);
 237
 238         bool sync_to_source ();
 239         bool write_to(boost::shared_ptr<MidiSource> source);
 240         bool write_section_to (boost::shared_ptr<MidiSource> source, Evoral::MusicalTime begin = Evoral::MinMusicalTime,
 241                                Evoral::MusicalTime end = Evoral::MaxMusicalTime);
 242
 243         // MidiModel doesn't use the normal AutomationList serialisation code
 244         // since controller data is stored in the .mid
 245         XMLNode& get_state();
 246         int set_state(const XMLNode&) { return 0; }
 247
 248         PBD::Signal0<void> ContentsChanged;
 249
 250         boost::shared_ptr<const MidiSource> midi_source ();
 251         void set_midi_source (boost::shared_ptr<MidiSource>);
 252
 253         boost::shared_ptr<Evoral::Note<TimeType> > find_note (NotePtr);
 254         PatchChangePtr find_patch_change (Evoral::event_id_t);
 255         boost::shared_ptr<Evoral::Note<TimeType> > find_note (gint note_id);
 256         boost::shared_ptr<Evoral::Event<TimeType> > find_sysex (gint);
 257
 258         InsertMergePolicy insert_merge_policy () const;
 259         void set_insert_merge_policy (InsertMergePolicy);
 260
 261         boost::shared_ptr<Evoral::Control> control_factory(const Evoral::Parameter& id);
 262
 263         void insert_silence_at_start (TimeType);
 264         void transpose (TimeType, TimeType, int);
 265
 266 protected:
 267         int resolve_overlaps_unlocked (const NotePtr, void* arg = 0);
 268
 269 private:
 270         struct WriteLockImpl : public AutomatableSequence<TimeType>::WriteLockImpl {
 271                 WriteLockImpl(Glib::Mutex::Lock* source_lock, Glib::RWLock& s, Glib::Mutex& c)
 272                         : AutomatableSequence<TimeType>::WriteLockImpl(s, c)
 273                         , source_lock(source_lock)
 274                 {}
 275                 ~WriteLockImpl() {
 276                         delete source_lock;
 277                 }
 278                 Glib::Mutex::Lock* source_lock;
 279         };
 280
 281 public:
 282         virtual WriteLock edit_lock();
 283         virtual WriteLock write_lock();
 284
 285 private:
 286         friend class DeltaCommand;
 287
 288         void source_interpolation_changed (Evoral::Parameter, Evoral::ControlList::InterpolationStyle);
 289         void source_automation_state_changed (Evoral::Parameter, AutoState);
 290         void control_list_interpolation_changed (Evoral::Parameter, Evoral::ControlList::InterpolationStyle);
 291         void automation_list_automation_state_changed (Evoral::Parameter, AutoState);
 292
 293         PBD::ScopedConnectionList _midi_source_connections;
 294
 295         // We cannot use a boost::shared_ptr here to avoid a retain cycle
 296         boost::weak_ptr<MidiSource> _midi_source;
 297         InsertMergePolicy _insert_merge_policy;
 298 };
 299
 300 } /* namespace ARDOUR */
 301
 302 #endif /* __ardour_midi_model_h__ */
 303