libs/ardour/region_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
  22 #include "ardour/session.h"
  23
  24 #include "ardour/region_factory.h"
  25 #include "ardour/region.h"
  26 #include "ardour/audioregion.h"
  27 #include "ardour/audiosource.h"
  28 #include "ardour/midi_source.h"
  29 #include "ardour/midi_region.h"
  30
  31 #include "i18n.h"
  32
  33 using namespace ARDOUR;
  34 using namespace PBD;
  35
  36 sigc::signal<void,boost::shared_ptr<Region> > RegionFactory::CheckNewRegion;
  37
  38 boost::shared_ptr<Region>
  39 RegionFactory::create (boost::shared_ptr<Region> region, nframes_t start,
  40                        nframes_t length, const std::string& name,
  41                        layer_t layer, Region::Flag flags, bool announce)
  42 {
  43         boost::shared_ptr<const AudioRegion> other_a;
  44         boost::shared_ptr<const MidiRegion> other_m;
  45
  46         if ((other_a = boost::dynamic_pointer_cast<AudioRegion>(region)) != 0) {
  47                 AudioRegion* ar = new AudioRegion (other_a, start, length, name, layer, flags);
  48                 boost::shared_ptr<AudioRegion> arp (ar);
  49                 boost::shared_ptr<Region> ret (boost::static_pointer_cast<Region> (arp));
  50                 ret->unlock_property_changes ();
  51                 if (announce) {
  52                         CheckNewRegion (ret);
  53                 }
  54                 return ret;
  55         } else if ((other_m = boost::dynamic_pointer_cast<MidiRegion>(region)) != 0) {
  56                 MidiRegion* ar = new MidiRegion (other_m, start, length, name, layer, flags);
  57                 boost::shared_ptr<MidiRegion> arp (ar);
  58                 boost::shared_ptr<Region> ret (boost::static_pointer_cast<Region> (arp));
  59                 ret->unlock_property_changes ();
  60                 if (announce) {
  61                         CheckNewRegion (ret);
  62                 }
  63                 return ret;
  64         } else {
  65                 fatal << _("programming error: RegionFactory::create() called with unknown Region type")
  66                       << endmsg;
  67                 /*NOTREACHED*/
  68                 return boost::shared_ptr<Region>();
  69         }
  70 }
  71
  72 boost::shared_ptr<Region>
  73 RegionFactory::create (boost::shared_ptr<const Region> region)
  74 {
  75         boost::shared_ptr<const AudioRegion> ar;
  76         boost::shared_ptr<const MidiRegion> mr;
  77
  78         if ((ar = boost::dynamic_pointer_cast<const AudioRegion>(region)) != 0) {
  79                 boost::shared_ptr<Region> ret (new AudioRegion (ar));
  80                 ret->unlock_property_changes ();
  81                 /* pure copy constructor - no CheckNewRegion emitted */
  82                 return ret;
  83         } else if ((mr = boost::dynamic_pointer_cast<const MidiRegion>(region)) != 0) {
  84                 boost::shared_ptr<Region> ret (new MidiRegion (mr));
  85                 ret->unlock_property_changes ();
  86                 /* pure copy constructor - no CheckNewRegion emitted */
  87                 return ret;
  88         } else {
  89                 fatal << _("programming error: RegionFactory::create() called with unknown Region type")
  90                       << endmsg;
  91                 /*NOTREACHED*/
  92                 return boost::shared_ptr<Region>();
  93         }
  94 }
  95
  96 boost::shared_ptr<Region>
  97 RegionFactory::create (boost::shared_ptr<AudioRegion> region, nframes_t start,
  98                        nframes_t length, const std::string& name,
  99                        layer_t layer, Region::Flag flags, bool announce)
 100 {
 101         return create (boost::static_pointer_cast<Region> (region), start, length, name, layer, flags, announce);
 102 }
 103
 104 boost::shared_ptr<Region>
 105 RegionFactory::create (boost::shared_ptr<Region> region, const SourceList& srcs,
 106                        const std::string& name, layer_t layer, Region::Flag flags, bool announce)
 107
 108 {
 109         boost::shared_ptr<const AudioRegion> other;
 110
 111         /* used by AudioFilter when constructing a new region that is intended to have nearly
 112            identical settings to an original, but using different sources.
 113         */
 114
 115         if ((other = boost::dynamic_pointer_cast<AudioRegion>(region)) != 0) {
 116                 AudioRegion* ar = new AudioRegion (other, srcs, srcs.front()->length(srcs.front()->timeline_position()), name, layer, flags);
 117                 boost::shared_ptr<AudioRegion> arp (ar);
 118                 boost::shared_ptr<Region> ret (boost::static_pointer_cast<Region> (arp));
 119                 ret->unlock_property_changes ();
 120                 if (announce) {
 121                         CheckNewRegion (ret);
 122                 }
 123                 return ret;
 124         } else {
 125                 fatal << _("programming error: RegionFactory::create() called with unknown Region type")
 126                       << endmsg;
 127                 /*NOTREACHED*/
 128                 return boost::shared_ptr<Region>();
 129         }
 130 }
 131
 132 boost::shared_ptr<Region>
 133 RegionFactory::create (Session& session, XMLNode& node, bool yn)
 134 {
 135         boost::shared_ptr<Region> r = session.XMLRegionFactory (node, yn);
 136
 137         if (r) {
 138                 r->unlock_property_changes ();
 139                 CheckNewRegion (r);
 140         }
 141
 142         return r;
 143 }
 144
 145 boost::shared_ptr<Region>
 146 RegionFactory::create (const SourceList& srcs, nframes_t start, nframes_t length, const string& name, layer_t layer, Region::Flag flags, bool announce)
 147 {
 148         if (srcs.empty()) {
 149                 return boost::shared_ptr<Region>();
 150         }
 151
 152         if (srcs[0]->type() == DataType::AUDIO) {
 153
 154                 AudioRegion* ar = new AudioRegion (srcs, start, length, name, layer, flags);
 155                 boost::shared_ptr<AudioRegion> arp (ar);
 156                 boost::shared_ptr<Region> ret (boost::static_pointer_cast<Region> (arp));
 157                 ret->unlock_property_changes ();
 158                 if (announce) {
 159                         CheckNewRegion (ret);
 160                 }
 161                 return ret;
 162
 163         } else if (srcs[0]->type() == DataType::MIDI) {
 164
 165                 MidiRegion* ar = new MidiRegion (srcs, start, length, name, layer, flags);
 166                 boost::shared_ptr<MidiRegion> mrp (ar);
 167                 boost::shared_ptr<Region> ret (boost::static_pointer_cast<Region> (mrp));
 168                 ret->unlock_property_changes ();
 169                 if (announce) {
 170                         CheckNewRegion (ret);
 171                 }
 172                 return ret;
 173
 174         }
 175
 176         return boost::shared_ptr<Region> ();
 177 }
 178
 179 boost::shared_ptr<Region>
 180 RegionFactory::create (SourceList& srcs, const XMLNode& node)
 181 {
 182         if (srcs.empty()) {
 183                 return boost::shared_ptr<Region>();
 184         }
 185
 186         if (srcs[0]->type() == DataType::AUDIO) {
 187                 boost::shared_ptr<Region> ret (new AudioRegion (srcs, node));
 188                 ret->unlock_property_changes ();
 189                 CheckNewRegion (ret);
 190                 return ret;
 191         } else if (srcs[0]->type() == DataType::MIDI) {
 192                 boost::shared_ptr<Region> ret (new MidiRegion (srcs, node));
 193                 ret->unlock_property_changes ();
 194                 CheckNewRegion (ret);
 195                 return ret;
 196         }
 197
 198         return boost::shared_ptr<Region> ();
 199 }
 200
 201 boost::shared_ptr<Region>
 202 RegionFactory::create (boost::shared_ptr<Source> src, nframes_t start, nframes_t length, const string& name, layer_t layer, Region::Flag flags, bool announce)
 203 {
 204         boost::shared_ptr<AudioSource> as;
 205         boost::shared_ptr<MidiSource> ms;
 206
 207         if ((as = boost::dynamic_pointer_cast<AudioSource>(src)) != 0) {
 208                 boost::shared_ptr<Region> ret (new AudioRegion (as, start, length, name, layer, flags));
 209                 ret->unlock_property_changes ();
 210                 if (announce) {
 211                         CheckNewRegion (ret);
 212                 }
 213                 return ret;
 214         } else if ((ms = boost::dynamic_pointer_cast<MidiSource>(src)) != 0) {
 215                 boost::shared_ptr<Region> ret (new MidiRegion (ms, start, length, name, layer, flags));
 216                 ret->unlock_property_changes ();
 217                 if (announce) {
 218                         CheckNewRegion (ret);
 219                 }
 220                 return ret;
 221         }
 222
 223         return boost::shared_ptr<Region>();
 224 }