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
  32 #include "ardour/search_paths.h"
  33
  34 #include "i18n.h"
  35
  36 using namespace std;
  37 using namespace ARDOUR;
  38 using namespace MIDI;
  39 using namespace MIDI::Name;
  40 using namespace PBD;
  41
  42 MidiPatchManager* MidiPatchManager::_manager = 0;
  43
  44 MidiPatchManager::MidiPatchManager ()
  45 {
  46         refresh ();
  47 }
  48
  49 void
  50 MidiPatchManager::set_session (Session* s)
  51 {
  52         SessionHandlePtr::set_session (s);
  53         add_session_patches ();
  54 }
  55
  56 void
  57 MidiPatchManager::add_session_patches ()
  58 {
  59         if (!_session) {
  60                 return;
  61         }
  62
  63         std::string path_to_patches = _session->session_directory().midi_patch_path();
  64
  65         if (!Glib::file_test (path_to_patches, Glib::FILE_TEST_EXISTS)) {
  66                 return;
  67         }
  68
  69         assert (Glib::file_test (path_to_patches, Glib::FILE_TEST_IS_DIR));
  70
  71         Glib::PatternSpec pattern(string("*.midnam"));
  72         vector<std::string> result;
  73
  74         find_matching_files_in_directory (path_to_patches, pattern, result);
  75
  76         info << "Loading " << result.size() << " MIDI patches from " << path_to_patches << endmsg;
  77
  78         for (vector<std::string>::iterator i = result.begin(); i != result.end(); ++i) {
  79                 boost::shared_ptr<MIDINameDocument> document(new MIDINameDocument(*i));
  80                 for (MIDINameDocument::MasterDeviceNamesList::const_iterator device =
  81                                         document->master_device_names_by_model().begin();
  82                                 device != document->master_device_names_by_model().end();
  83                                 ++device) {
  84                         //cerr << "got model " << device->first << endl;
  85                         // have access to the documents by model name
  86                         _documents[device->first] = document;
  87                         // build a list of all master devices from all documents
  88                         _master_devices_by_model[device->first] = device->second;
  89                         _all_models.insert(device->first);
  90
  91                         // make sure there are no double model names
  92                         // TODO: handle this gracefully.
  93                         assert(_documents.count(device->first) == 1);
  94                         assert(_master_devices_by_model.count(device->first) == 1);
  95                 }
  96         }
  97 }
  98
  99 void
 100 MidiPatchManager::refresh()
 101 {
 102         _documents.clear();
 103         _master_devices_by_model.clear();
 104         _all_models.clear();
 105
 106         Searchpath search_path = midi_patch_search_path ();
 107         Glib::PatternSpec pattern (string("*.midnam"));
 108         vector<std::string> result;
 109
 110         find_matching_files_in_search_path (search_path, pattern, result);
 111
 112         info << "Loading " << result.size() << " MIDI patches from " << search_path.to_string() << endmsg;
 113
 114         for (vector<std::string>::iterator i = result.begin(); i != result.end(); ++i) {
 115                 boost::shared_ptr<MIDINameDocument> document;
 116                 try {
 117                         document = boost::shared_ptr<MIDINameDocument>(new MIDINameDocument(*i));
 118                 } catch (...) {
 119                         error << "Error parsing MIDI patch file " << *i << endmsg;
 120                         continue;
 121                 }
 122                 for (MIDINameDocument::MasterDeviceNamesList::const_iterator device =
 123                              document->master_device_names_by_model().begin();
 124                      device != document->master_device_names_by_model().end();
 125                      ++device) {
 126                         if (_documents.find(device->first) != _documents.end()) {
 127                                 warning << string_compose(_("Duplicate MIDI device `%1' in `%2' ignored"),
 128                                                           device->first, *i)
 129                                         << endmsg;
 130                                 continue;
 131                         }
 132
 133                         _documents[device->first]               = document;
 134                         _master_devices_by_model[device->first] = device->second;
 135
 136                         _all_models.insert(device->first);
 137                 }
 138         }
 139
 140         if (_session) {
 141                 add_session_patches ();
 142         }
 143 }
 144
 145 void
 146 MidiPatchManager::session_going_away ()
 147 {
 148         SessionHandlePtr::session_going_away ();
 149         refresh ();
 150 }