libs/ardour/source_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     $Id$
  19 */
  20
  21 #include <pbd/error.h>
  22
  23 #include <ardour/source_factory.h>
  24 #include <ardour/sndfilesource.h>
  25 #include <ardour/destructive_filesource.h>
  26 #include <ardour/configuration.h>
  27
  28 #ifdef HAVE_COREAUDIO
  29 #include <ardour/coreaudiosource.h>
  30 #endif
  31
  32 #include "i18n.h"
  33
  34 using namespace ARDOUR;
  35 using namespace std;
  36 using namespace PBD;
  37
  38 sigc::signal<void,boost::shared_ptr<Source> > SourceFactory::SourceCreated;
  39
  40 int
  41 SourceFactory::setup_peakfile (boost::shared_ptr<Source> s)
  42 {
  43         boost::shared_ptr<AudioSource> as (boost::dynamic_pointer_cast<AudioSource> (s));
  44         if (as) {
  45                 if (as->setup_peakfile ()) {
  46                         error << string_compose("SourceFactory: could not set up peakfile for %1", as->name()) << endmsg;
  47                         return -1;
  48                 }
  49         }
  50
  51         return 0;
  52 }
  53
  54 #ifdef HAVE_COREAUDIO
  55 boost::shared_ptr<Source>
  56 SourceFactory::create (Session& s, const XMLNode& node)
  57 {
  58         try {
  59                 boost::shared_ptr<Source> ret (new CoreAudioSource (s, node));
  60                 if (setup_peakfile (ret)) {
  61                         return boost::shared_ptr<Source>();
  62                 }
  63                 SourceCreated (ret);
  64                 return ret;
  65         }
  66
  67
  68         catch (failed_constructor& err) {
  69                 boost::shared_ptr<Source> ret (new SndFileSource (s, node));
  70                 if (setup_peakfile (ret)) {
  71                         return boost::shared_ptr<Source>();
  72                 }
  73                 SourceCreated (ret);
  74                 return ret;
  75         }
  76
  77         return boost::shared_ptr<Source>();
  78 }
  79
  80 #else
  81
  82 boost::shared_ptr<Source>
  83 SourceFactory::create (Session& s, const XMLNode& node)
  84 {
  85         boost::shared_ptr<Source> ret (new SndFileSource (s, node));
  86         if (setup_peakfile (ret)) {
  87                 return boost::shared_ptr<Source>();
  88         }
  89         SourceCreated (ret);
  90         return ret;
  91 }
  92
  93 #endif // HAVE_COREAUDIO
  94
  95 #ifdef HAVE_COREAUDIO
  96 boost::shared_ptr<Source>
  97 SourceFactory::createReadable (Session& s, string idstr, AudioFileSource::Flag flags, bool announce)
  98 {
  99         if (!(flags & Destructive)) {
 100
 101                 try {
 102                         boost::shared_ptr<Source> ret (new CoreAudioSource (s, idstr, flags));
 103                         if (setup_peakfile (ret)) {
 104                                 return boost::shared_ptr<Source>();
 105                         }
 106                         if (announce) {
 107                                 SourceCreated (ret);
 108                         }
 109                         return ret;
 110                 }
 111
 112                 catch (failed_constructor& err) {
 113                         boost::shared_ptr<Source> ret (new SndFileSource (s, idstr, flags));
 114                         if (setup_peakfile (ret)) {
 115                                 return boost::shared_ptr<Source>();
 116                         }
 117                         if (announce) {
 118                                 SourceCreated (ret);
 119                         }
 120                         return ret;
 121                 }
 122
 123         } else {
 124
 125                 boost::shared_ptr<Source> ret (new SndFileSource (s, idstr, flags));
 126                 if (setup_peakfile (ret)) {
 127                         return boost::shared_ptr<Source>();
 128                 }
 129                 if (announce) {
 130                         SourceCreated (ret);
 131                 }
 132                 return ret;
 133         }
 134
 135         return boost::shared_ptr<Source>();
 136 }
 137
 138 #else
 139
 140 boost::shared_ptr<Source>
 141 SourceFactory::createReadable (Session& s, string idstr, AudioFileSource::Flag flags, bool announce)
 142 {
 143         boost::shared_ptr<Source> ret (new SndFileSource (s, idstr, flags));
 144         if (setup_peakfile (ret)) {
 145                 return boost::shared_ptr<Source>();
 146         }
 147         if (announce) {
 148                 SourceCreated (ret);
 149         }
 150         return ret;
 151 }
 152
 153 #endif // HAVE_COREAUDIO
 154
 155 boost::shared_ptr<Source>
 156 SourceFactory::createWritable (Session& s, std::string path, bool destructive, nframes_t rate, bool announce)
 157 {
 158         /* this might throw failed_constructor(), which is OK */
 159
 160         boost::shared_ptr<Source> ret (new SndFileSource
 161                                        (s, path,
 162                                         Config->get_native_file_data_format(),
 163                                         Config->get_native_file_header_format(),
 164                                         rate,
 165                                         (destructive ? AudioFileSource::Flag (SndFileSource::default_writable_flags | AudioFileSource::Destructive) :
 166                                          SndFileSource::default_writable_flags)));
 167
 168         if (setup_peakfile (ret)) {
 169                 return boost::shared_ptr<Source>();
 170         }
 171         if (announce) {
 172                 SourceCreated (ret);
 173         }
 174         return ret;
 175 }