libs/ardour/playlist_factory.cc

   1 /*
   2     Copyright (C) 2000-2006 Paul Davis
   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 */
  19
  20 #include "pbd/error.h"
  21 #include "pbd/xml++.h"
  22
  23 #include "ardour/playlist.h"
  24 #include "ardour/audioplaylist.h"
  25 #include "ardour/midi_playlist.h"
  26 #include "ardour/playlist_factory.h"
  27
  28 #include "pbd/i18n.h"
  29
  30 using namespace std;
  31 using namespace ARDOUR;
  32 using namespace PBD;
  33
  34 PBD::Signal2<void,boost::shared_ptr<Playlist>, bool> PlaylistFactory::PlaylistCreated;
  35
  36 boost::shared_ptr<Playlist>
  37 PlaylistFactory::create (Session& s, const XMLNode& node, bool hidden, bool unused)
  38 {
  39         XMLProperty const * type = node.property("type");
  40
  41         boost::shared_ptr<Playlist> pl;
  42
  43         try {
  44                 if (!type || type->value() == "audio") {
  45                         pl = boost::shared_ptr<Playlist> (new AudioPlaylist (s, node, hidden));
  46                 } else if (type->value() == "midi") {
  47                         pl = boost::shared_ptr<Playlist> (new MidiPlaylist (s, node, hidden));
  48                 }
  49
  50                 pl->set_region_ownership ();
  51
  52                 if (pl && !hidden) {
  53                         PlaylistCreated (pl, unused);
  54                 }
  55                 return pl;
  56
  57         } catch (...) {
  58                 return boost::shared_ptr<Playlist> ();
  59         }
  60 }
  61
  62 boost::shared_ptr<Playlist>
  63 PlaylistFactory::create (DataType type, Session& s, string name, bool hidden)
  64 {
  65         boost::shared_ptr<Playlist> pl;
  66
  67         try {
  68                 if (type == DataType::AUDIO)
  69                         pl = boost::shared_ptr<Playlist> (new AudioPlaylist (s, name, hidden));
  70                 else if (type == DataType::MIDI)
  71                         pl = boost::shared_ptr<Playlist> (new MidiPlaylist (s, name, hidden));
  72
  73                 if (pl && !hidden) {
  74                         PlaylistCreated (pl, false);
  75                 }
  76
  77                 return pl;
  78         } catch (...) {
  79                 return boost::shared_ptr<Playlist> ();
  80         }
  81 }
  82
  83 boost::shared_ptr<Playlist>
  84 PlaylistFactory::create (boost::shared_ptr<const Playlist> old, string name, bool hidden)
  85 {
  86         boost::shared_ptr<Playlist> pl;
  87         boost::shared_ptr<const AudioPlaylist> apl;
  88         boost::shared_ptr<const MidiPlaylist> mpl;
  89
  90         try {
  91
  92                 if ((apl = boost::dynamic_pointer_cast<const AudioPlaylist> (old)) != 0) {
  93                         pl = boost::shared_ptr<Playlist> (new AudioPlaylist (apl, name, hidden));
  94                         pl->set_region_ownership ();
  95                 } else if ((mpl = boost::dynamic_pointer_cast<const MidiPlaylist> (old)) != 0) {
  96                         pl = boost::shared_ptr<Playlist> (new MidiPlaylist (mpl, name, hidden));
  97                         pl->set_region_ownership ();
  98                 }
  99
 100                 if (pl && !hidden) {
 101                         PlaylistCreated (pl, false);
 102                 }
 103
 104                 return pl;
 105         } catch (...) {
 106                 return boost::shared_ptr<Playlist> ();
 107         }
 108
 109 }
 110
 111 boost::shared_ptr<Playlist>
 112 PlaylistFactory::create (boost::shared_ptr<const Playlist> old, samplepos_t start, samplecnt_t cnt, string name, bool hidden)
 113 {
 114         boost::shared_ptr<Playlist> pl;
 115         boost::shared_ptr<const AudioPlaylist> apl;
 116         boost::shared_ptr<const MidiPlaylist> mpl;
 117
 118         try {
 119                 if ((apl = boost::dynamic_pointer_cast<const AudioPlaylist> (old)) != 0) {
 120                         pl = boost::shared_ptr<Playlist> (new AudioPlaylist (apl, start, cnt, name, hidden));
 121                         pl->set_region_ownership ();
 122                 } else if ((mpl = boost::dynamic_pointer_cast<const MidiPlaylist> (old)) != 0) {
 123                         pl = boost::shared_ptr<Playlist> (new MidiPlaylist (mpl, start, cnt, name, hidden));
 124                         pl->set_region_ownership ();
 125                 }
 126
 127                 /* this factory method does NOT notify others */
 128
 129                 return pl;
 130         } catch (...) {
 131                 return boost::shared_ptr<Playlist> ();
 132         }
 133 }