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
  29 #include "i18n.h"
  30
  31 using namespace ARDOUR;
  32 using namespace PBD;
  33
  34 sigc::signal<void,boost::shared_ptr<Region> > RegionFactory::CheckNewRegion;
  35
  36 boost::shared_ptr<Region>
  37 RegionFactory::create (boost::shared_ptr<Region> region, nframes_t start,
  38                              nframes_t length, std::string name,
  39                              layer_t layer, Region::Flag flags, bool announce)
  40 {
  41         boost::shared_ptr<const AudioRegion> other;
  42
  43         if ((other = boost::dynamic_pointer_cast<AudioRegion>(region)) != 0) {
  44                 AudioRegion* ar = new AudioRegion (other, start, length, name, layer, flags);
  45                 boost::shared_ptr<AudioRegion> arp (ar);
  46                 boost::shared_ptr<Region> ret (boost::static_pointer_cast<Region> (arp));
  47                 if (announce) {
  48                         CheckNewRegion (ret);
  49                 }
  50                 return ret;
  51         } else {
  52                 fatal << _("programming error: RegionFactory::create() called with unknown Region type")
  53                       << endmsg;
  54                 /*NOTREACHED*/
  55                 return boost::shared_ptr<Region>();
  56         }
  57 }
  58
  59 boost::shared_ptr<Region>
  60 RegionFactory::create (boost::shared_ptr<Region> region)
  61 {
  62         boost::shared_ptr<AudioRegion> other;
  63
  64         if ((other = boost::dynamic_pointer_cast<AudioRegion>(region)) != 0) {
  65                 boost::shared_ptr<Region> ret (new AudioRegion (other));
  66                 /* pure copy constructor - no CheckNewRegion emitted */
  67                 return ret;
  68         } else {
  69                 fatal << _("programming error: RegionFactory::create() called with unknown Region type")
  70                       << endmsg;
  71                 /*NOTREACHED*/
  72                 return boost::shared_ptr<Region>();
  73         }
  74 }
  75
  76 boost::shared_ptr<Region>
  77 RegionFactory::create (boost::shared_ptr<AudioRegion> region, nframes_t start,
  78                              nframes_t length, std::string name,
  79                              layer_t layer, Region::Flag flags, bool announce)
  80 {
  81         return create (boost::static_pointer_cast<Region> (region), start, length, name, layer, flags, announce);
  82 }
  83
  84 boost::shared_ptr<Region>
  85 RegionFactory::create (Session& session, XMLNode& node, bool yn)
  86 {
  87         boost::shared_ptr<Region> r = session.XMLRegionFactory (node, yn);
  88         CheckNewRegion (r);
  89         return r;
  90 }
  91
  92 boost::shared_ptr<Region>
  93 RegionFactory::create (const SourceList& srcs, nframes_t start, nframes_t length, const string& name, layer_t layer, Region::Flag flags, bool announce)
  94 {
  95         boost::shared_ptr<AudioRegion> arp (new AudioRegion (srcs, start, length, name, layer, flags));
  96         boost::shared_ptr<Region> ret (boost::static_pointer_cast<Region> (arp));
  97         if (announce) {
  98                 CheckNewRegion (ret);
  99         }
 100         return ret;
 101 }
 102
 103 boost::shared_ptr<Region>
 104 RegionFactory::create (SourceList& srcs, const XMLNode& node)
 105 {
 106         if (srcs.empty()) {
 107                 return boost::shared_ptr<Region>();
 108         }
 109
 110         boost::shared_ptr<Region> ret (new AudioRegion (srcs, node));
 111         CheckNewRegion (ret);
 112         return ret;
 113 }
 114
 115 boost::shared_ptr<Region>
 116 RegionFactory::create (boost::shared_ptr<Source> src, nframes_t start, nframes_t length, const string& name, layer_t layer, Region::Flag flags, bool announce)
 117 {
 118         boost::shared_ptr<AudioSource> as;
 119
 120         if ((as = boost::dynamic_pointer_cast<AudioSource>(src)) != 0) {
 121                 boost::shared_ptr<Region> ret (new AudioRegion (as, start, length, name, layer, flags));
 122                 if (announce) {
 123                         CheckNewRegion (ret);
 124                 }
 125                 return ret;
 126         }
 127
 128         return boost::shared_ptr<Region>();
 129 }