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 <glibmm/fileutils.h>
  24
  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 #include "ardour/midi_patch_search_path.h"
  32
  33 #include "i18n.h"
  34
  35 using namespace std;
  36 using namespace ARDOUR;
  37 using namespace MIDI;
  38 using namespace MIDI::Name;
  39 using namespace PBD;
  40
  41 MidiPatchManager* MidiPatchManager::_manager = 0;
  42
  43 MidiPatchManager::MidiPatchManager ()
  44 {
  45         refresh ();
  46 }
  47
  48 void
  49 MidiPatchManager::set_session (Session* s)
  50 {
  51         SessionHandlePtr::set_session (s);
  52         add_session_patches ();
  53 }
  54
  55 void
  56 MidiPatchManager::add_session_patches ()
  57 {
  58         if (!_session) {
  59                 return;
  60         }
  61
  62         std::string path_to_patches = _session->session_directory().midi_patch_path();
  63
  64         if (!Glib::file_test (path_to_patches, Glib::FILE_TEST_EXISTS)) {
  65                 return;
  66         }
  67
  68         assert (Glib::file_test (path_to_patches, Glib::FILE_TEST_IS_DIR));
  69
  70         Glib::PatternSpec pattern(string("*.midnam"));
  71         vector<std::string> result;
  72
  73         find_matching_files_in_directory (path_to_patches, pattern, result);
  74
  75         info << "Loading " << result.size() << " MIDI patches from " << path_to_patches << endmsg;
  76
  77         for (vector<std::string>::iterator i = result.begin(); i != result.end(); ++i) {
  78                 boost::shared_ptr<MIDINameDocument> document(new MIDINameDocument(*i));
  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.insert(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::refresh()
 100 {
 101         _documents.clear();
 102         _master_devices_by_model.clear();
 103         _all_models.clear();
 104
 105         SearchPath search_path = midi_patch_search_path ();
 106         Glib::PatternSpec pattern (string("*.midnam"));
 107         vector<std::string> result;
 108
 109         find_matching_files_in_search_path (search_path, pattern, result);
 110
 111         info << "Loading " << result.size() << " MIDI patches from " << search_path.to_string() << endmsg;
 112
 113         for (vector<std::string>::iterator i = result.begin(); i != result.end(); ++i) {
 114                 boost::shared_ptr<MIDINameDocument> document;
 115                 try {
 116                         document = boost::shared_ptr<MIDINameDocument>(new MIDINameDocument(*i));
 117                 } catch (...) {
 118                         error << "Error parsing MIDI patch file " << *i << endmsg;
 119                         continue;
 120                 }
 121                 for (MIDINameDocument::MasterDeviceNamesList::const_iterator device =
 122                              document->master_device_names_by_model().begin();
 123                      device != document->master_device_names_by_model().end();
 124                      ++device) {
 125                         if (_documents.find(device->first) != _documents.end()) {
 126                                 warning << string_compose(_("Duplicate MIDI device `%1' in `%2' ignored"),
 127                                                           device->first, *i)
 128                                         << endmsg;
 129                                 continue;
 130                         }
 131
 132                         _documents[device->first]               = document;
 133                         _master_devices_by_model[device->first] = device->second;
 134
 135                         _all_models.insert(device->first);
 136                 }
 137         }
 138
 139         if (_session) {
 140                 add_session_patches ();
 141         }
 142 }
 143
 144 void
 145 MidiPatchManager::session_going_away ()
 146 {
 147         SessionHandlePtr::session_going_away ();
 148         refresh ();
 149 }