libs/ardour/midi_patch_manager.cc

   1 /*
   2     Copyright (C) 2008 Hans Baier
   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     $Id$
  19 */
  20
  21 #include <sigc++/sigc++.h>
  22 #include <boost/shared_ptr.hpp>
  23
  24 #include "pbd/compose.h"
  25 #include "pbd/file_utils.h"
  26 #include "pbd/error.h"
  27
  28 #include "ardour/session.h"
  29 #include "ardour/session_directory.h"
  30 #include "ardour/midi_patch_manager.h"
  31
  32 #include "i18n.h"
  33
  34 using namespace std;
  35 using namespace sigc;
  36 using namespace ARDOUR;
  37 using namespace MIDI;
  38 using namespace MIDI::Name;
  39 using namespace PBD;
  40 using namespace PBD::sys;
  41
  42 MidiPatchManager* MidiPatchManager::_manager = 0;
  43
  44 void
  45 MidiPatchManager::set_session (Session& s)
  46 {
  47         _session = &s;
  48         _session->GoingAway.connect (mem_fun (*this, &MidiPatchManager::drop_session));
  49
  50         refresh();
  51 }
  52
  53 void
  54 MidiPatchManager::refresh()
  55 {
  56         _documents.clear();
  57         _master_devices_by_model.clear();
  58         _all_models.clear();
  59
  60         path path_to_patches = _session->session_directory().midi_patch_path();
  61
  62         info << string_compose(_("looking for MIDI patches in %1"), path_to_patches.to_string()) << endmsg;
  63
  64         if (!exists(path_to_patches)) {
  65                 return;
  66         }
  67
  68         assert(is_directory(path_to_patches));
  69
  70         Glib::PatternSpec pattern(Glib::ustring("*.midnam"));
  71         vector<path> result;
  72
  73         find_matching_files_in_directory(path_to_patches, pattern, result);
  74
  75         cerr << "Loading " << result.size() << " MIDI patches from " << path_to_patches.to_string() << endl;
  76
  77         for (vector<path>::iterator i = result.begin(); i != result.end(); ++i) {
  78                 boost::shared_ptr<MIDINameDocument> document(new MIDINameDocument(i->to_string()));
  79                 for (MIDINameDocument::MasterDeviceNamesList::const_iterator device =
  80                                         document->master_device_names_by_model().begin();
  81                                 device != document->master_device_names_by_model().end();
  82                                 ++device) {
  83                         //cerr << "got model " << device->first << endl;
  84                         // have access to the documents by model name
  85                         _documents[device->first] = document;
  86                         // build a list of all master devices from all documents
  87                         _master_devices_by_model[device->first] = device->second;
  88                         _all_models.push_back(device->first);
  89
  90                         // make sure there are no double model names
  91                         // TODO: handle this gracefully.
  92                         assert(_documents.count(device->first) == 1);
  93                         assert(_master_devices_by_model.count(device->first) == 1);
  94                 }
  95         }
  96 }
  97
  98 void
  99 MidiPatchManager::drop_session ()
 100 {
 101         _session = 0;
 102         _documents.clear();
 103         _master_devices_by_model.clear();
 104         _all_models.clear();
 105 }