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, const 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<const Region> region)
  61 {
  62         boost::shared_ptr<const AudioRegion> other;
  63
  64         if ((other = boost::dynamic_pointer_cast<const 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, const 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 (boost::shared_ptr<Region> region, const SourceList& srcs,
  86                        const std::string& name, layer_t layer, Region::Flag flags, bool announce)
  87
  88 {
  89         boost::shared_ptr<const AudioRegion> other;
  90
  91         /* used by AudioFilter when constructing a new region that is intended to have nearly
  92            identical settings to an original, but using different sources.
  93         */
  94
  95         if ((other = boost::dynamic_pointer_cast<AudioRegion>(region)) != 0) {
  96                 AudioRegion* ar = new AudioRegion (other, srcs, srcs.front()->length(), name, layer, flags);
  97                 boost::shared_ptr<AudioRegion> arp (ar);
  98                 boost::shared_ptr<Region> ret (boost::static_pointer_cast<Region> (arp));
  99                 if (announce) {
 100                         CheckNewRegion (ret);
 101                 }
 102                 return ret;
 103         } else {
 104                 fatal << _("programming error: RegionFactory::create() called with unknown Region type")
 105                       << endmsg;
 106                 /*NOTREACHED*/
 107                 return boost::shared_ptr<Region>();
 108         }
 109 }
 110
 111 boost::shared_ptr<Region>
 112 RegionFactory::create (Session& session, XMLNode& node, bool yn)
 113 {
 114         boost::shared_ptr<Region> r = session.XMLRegionFactory (node, yn);
 115
 116         if (r) {
 117                 CheckNewRegion (r);
 118         }
 119
 120         return r;
 121 }
 122
 123 boost::shared_ptr<Region>
 124 RegionFactory::create (const SourceList& srcs, nframes_t start, nframes_t length, const string& name, layer_t layer, Region::Flag flags, bool announce)
 125 {
 126         boost::shared_ptr<AudioRegion> arp (new AudioRegion (srcs, start, length, name, layer, flags));
 127         boost::shared_ptr<Region> ret (boost::static_pointer_cast<Region> (arp));
 128         if (announce) {
 129                 CheckNewRegion (ret);
 130         }
 131         return ret;
 132 }
 133
 134 boost::shared_ptr<Region>
 135 RegionFactory::create (SourceList& srcs, const XMLNode& node)
 136 {
 137         if (srcs.empty()) {
 138                 return boost::shared_ptr<Region>();
 139         }
 140
 141         boost::shared_ptr<Region> ret (new AudioRegion (srcs, node));
 142         CheckNewRegion (ret);
 143         return ret;
 144 }
 145
 146 boost::shared_ptr<Region>
 147 RegionFactory::create (boost::shared_ptr<Source> src, nframes_t start, nframes_t length, const string& name, layer_t layer, Region::Flag flags, bool announce)
 148 {
 149         boost::shared_ptr<AudioSource> as;
 150
 151         if ((as = boost::dynamic_pointer_cast<AudioSource>(src)) != 0) {
 152                 boost::shared_ptr<Region> ret (new AudioRegion (as, start, length, name, layer, flags));
 153                 if (announce) {
 154                         CheckNewRegion (ret);
 155                 }
 156                 return ret;
 157         }
 158
 159         return boost::shared_ptr<Region>();
 160 }