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 <boost/shared_ptr.hpp>
  22
  23 #include "pbd/file_utils.h"
  24 #include "pbd/error.h"
  25
  26 #include "ardour/session.h"
  27 #include "ardour/session_directory.h"
  28 #include "ardour/midi_patch_manager.h"
  29 #include "ardour/midi_patch_search_path.h"
  30
  31 using namespace std;
  32 using namespace ARDOUR;
  33 using namespace MIDI;
  34 using namespace MIDI::Name;
  35 using namespace PBD;
  36 using namespace PBD::sys;
  37
  38 MidiPatchManager* MidiPatchManager::_manager = 0;
  39
  40 MidiPatchManager::MidiPatchManager ()
  41 {
  42         refresh ();
  43 }
  44
  45 void
  46 MidiPatchManager::set_session (Session* s)
  47 {
  48         SessionHandlePtr::set_session (s);
  49         add_session_patches ();
  50 }
  51
  52 void
  53 MidiPatchManager::add_session_patches ()
  54 {
  55         if (!_session) {
  56                 return;
  57         }
  58
  59         path path_to_patches = _session->session_directory().midi_patch_path();
  60
  61         if (!exists (path_to_patches)) {
  62                 return;
  63         }
  64
  65         assert(is_directory(path_to_patches));
  66
  67         Glib::PatternSpec pattern(string("*.midnam"));
  68         vector<path> result;
  69
  70         find_matching_files_in_directory (path_to_patches, pattern, result);
  71
  72         info << "Loading " << result.size() << " MIDI patches from " << path_to_patches.to_string() << endmsg;
  73
  74         for (vector<path>::iterator i = result.begin(); i != result.end(); ++i) {
  75                 boost::shared_ptr<MIDINameDocument> document(new MIDINameDocument(i->to_string()));
  76                 for (MIDINameDocument::MasterDeviceNamesList::const_iterator device =
  77                                         document->master_device_names_by_model().begin();
  78                                 device != document->master_device_names_by_model().end();
  79                                 ++device) {
  80                         //cerr << "got model " << device->first << endl;
  81                         // have access to the documents by model name
  82                         _documents[device->first] = document;
  83                         // build a list of all master devices from all documents
  84                         _master_devices_by_model[device->first] = device->second;
  85                         _all_models.push_back(device->first);
  86
  87                         // make sure there are no double model names
  88                         // TODO: handle this gracefully.
  89                         assert(_documents.count(device->first) == 1);
  90                         assert(_master_devices_by_model.count(device->first) == 1);
  91                 }
  92         }
  93 }
  94
  95 void
  96 MidiPatchManager::refresh()
  97 {
  98         _documents.clear();
  99         _master_devices_by_model.clear();
 100         _all_models.clear();
 101
 102         SearchPath search_path = midi_patch_search_path ();
 103         Glib::PatternSpec pattern (string("*.midnam"));
 104         vector<path> result;
 105
 106         find_matching_files_in_search_path (search_path, pattern, result);
 107
 108         info << "Loading " << result.size() << " MIDI patches from " << search_path.to_string() << endmsg;
 109
 110         for (vector<path>::iterator i = result.begin(); i != result.end(); ++i) {
 111                 boost::shared_ptr<MIDINameDocument> document(new MIDINameDocument(i->to_string()));
 112                 for (MIDINameDocument::MasterDeviceNamesList::const_iterator device =
 113                                         document->master_device_names_by_model().begin();
 114                                 device != document->master_device_names_by_model().end();
 115                                 ++device) {
 116                         //cerr << "got model " << device->first << endl;
 117                         // have access to the documents by model name
 118                         _documents[device->first] = document;
 119                         // build a list of all master devices from all documents
 120                         _master_devices_by_model[device->first] = device->second;
 121                         _all_models.push_back(device->first);
 122
 123                         // make sure there are no double model names
 124                         // TODO: handle this gracefully.
 125                         assert(_documents.count(device->first) == 1);
 126                         assert(_master_devices_by_model.count(device->first) == 1);
 127                 }
 128         }
 129
 130         if (_session) {
 131                 add_session_patches ();
 132         }
 133 }
 134
 135 void
 136 MidiPatchManager::session_going_away ()
 137 {
 138         SessionHandlePtr::session_going_away ();
 139         refresh ();
 140 }