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 #ifdef SearchPath
  33 #undef SearchPath
  34 #endif
  35
  36 #include "ardour/midi_patch_search_path.h"
  37
  38 #include "i18n.h"
  39
  40 using namespace std;
  41 using namespace ARDOUR;
  42 using namespace MIDI;
  43 using namespace MIDI::Name;
  44 using namespace PBD;
  45
  46 MidiPatchManager* MidiPatchManager::_manager = 0;
  47
  48 MidiPatchManager::MidiPatchManager ()
  49 {
  50         refresh ();
  51 }
  52
  53 void
  54 MidiPatchManager::set_session (Session* s)
  55 {
  56         SessionHandlePtr::set_session (s);
  57         add_session_patches ();
  58 }
  59
  60 void
  61 MidiPatchManager::add_session_patches ()
  62 {
  63         if (!_session) {
  64                 return;
  65         }
  66
  67         std::string path_to_patches = _session->session_directory().midi_patch_path();
  68
  69         if (!Glib::file_test (path_to_patches, Glib::FILE_TEST_EXISTS)) {
  70                 return;
  71         }
  72
  73         assert (Glib::file_test (path_to_patches, Glib::FILE_TEST_IS_DIR));
  74
  75         Glib::PatternSpec pattern(string("*.midnam"));
  76         vector<std::string> result;
  77
  78         find_matching_files_in_directory (path_to_patches, pattern, result);
  79
  80         info << "Loading " << result.size() << " MIDI patches from " << path_to_patches << endmsg;
  81
  82         for (vector<std::string>::iterator i = result.begin(); i != result.end(); ++i) {
  83                 boost::shared_ptr<MIDINameDocument> document(new MIDINameDocument(*i));
  84                 for (MIDINameDocument::MasterDeviceNamesList::const_iterator device =
  85                                         document->master_device_names_by_model().begin();
  86                                 device != document->master_device_names_by_model().end();
  87                                 ++device) {
  88                         //cerr << "got model " << device->first << endl;
  89                         // have access to the documents by model name
  90                         _documents[device->first] = document;
  91                         // build a list of all master devices from all documents
  92                         _master_devices_by_model[device->first] = device->second;
  93                         _all_models.insert(device->first);
  94
  95                         // make sure there are no double model names
  96                         // TODO: handle this gracefully.
  97                         assert(_documents.count(device->first) == 1);
  98                         assert(_master_devices_by_model.count(device->first) == 1);
  99                 }
 100         }
 101 }
 102
 103 void
 104 MidiPatchManager::refresh()
 105 {
 106         _documents.clear();
 107         _master_devices_by_model.clear();
 108         _all_models.clear();
 109
 110         SearchPath search_path = midi_patch_search_path ();
 111         Glib::PatternSpec pattern (string("*.midnam"));
 112         vector<std::string> result;
 113
 114         find_matching_files_in_search_path (search_path, pattern, result);
 115
 116         info << "Loading " << result.size() << " MIDI patches from " << search_path.to_string() << endmsg;
 117
 118         for (vector<std::string>::iterator i = result.begin(); i != result.end(); ++i) {
 119                 boost::shared_ptr<MIDINameDocument> document;
 120                 try {
 121                         document = boost::shared_ptr<MIDINameDocument>(new MIDINameDocument(*i));
 122                 } catch (...) {
 123                         error << "Error parsing MIDI patch file " << *i << endmsg;
 124                         continue;
 125                 }
 126                 for (MIDINameDocument::MasterDeviceNamesList::const_iterator device =
 127                              document->master_device_names_by_model().begin();
 128                      device != document->master_device_names_by_model().end();
 129                      ++device) {
 130                         if (_documents.find(device->first) != _documents.end()) {
 131                                 warning << string_compose(_("Duplicate MIDI device `%1' in `%2' ignored"),
 132                                                           device->first, *i)
 133                                         << endmsg;
 134                                 continue;
 135                         }
 136
 137                         _documents[device->first]               = document;
 138                         _master_devices_by_model[device->first] = device->second;
 139
 140                         _all_models.insert(device->first);
 141                 }
 142         }
 143
 144         if (_session) {
 145                 add_session_patches ();
 146         }
 147 }
 148
 149 void
 150 MidiPatchManager::session_going_away ()
 151 {
 152         SessionHandlePtr::session_going_away ();
 153         refresh ();
 154 }