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 #include <pbd/convert.h>
  23 #include <pbd/pthread_utils.h>
  24
  25 #include <ardour/source_factory.h>
  26 #include <ardour/sndfilesource.h>
  27 #include <ardour/silentfilesource.h>
  28 #include <ardour/configuration.h>
  29 #include <ardour/smf_source.h>
  30
  31 #ifdef HAVE_COREAUDIO
  32 #include <ardour/coreaudiosource.h>
  33 #endif
  34
  35 #include "i18n.h"
  36
  37 using namespace ARDOUR;
  38 using namespace std;
  39 using namespace PBD;
  40
  41 sigc::signal<void,boost::shared_ptr<Source> > SourceFactory::SourceCreated;
  42 Glib::Cond* SourceFactory::PeaksToBuild;
  43 Glib::StaticMutex SourceFactory::peak_building_lock = GLIBMM_STATIC_MUTEX_INIT;
  44 std::list<boost::weak_ptr<AudioSource> > SourceFactory::files_with_peaks;
  45
  46 static void
  47 peak_thread_work ()
  48 {
  49         PBD::ThreadCreated (pthread_self(), string ("peakbuilder-") + to_string (pthread_self(), std::dec));
  50
  51         while (true) {
  52
  53                 SourceFactory::peak_building_lock.lock ();
  54
  55           wait:
  56                 if (SourceFactory::files_with_peaks.empty()) {
  57                         SourceFactory::PeaksToBuild->wait (SourceFactory::peak_building_lock);
  58                 }
  59
  60                 if (SourceFactory::files_with_peaks.empty()) {
  61                         goto wait;
  62                 }
  63
  64                 boost::shared_ptr<AudioSource> as (SourceFactory::files_with_peaks.front().lock());
  65                 SourceFactory::files_with_peaks.pop_front ();
  66                 SourceFactory::peak_building_lock.unlock ();
  67
  68                 if (!as) {
  69                         continue;
  70                 }
  71                 as->setup_peakfile ();
  72         }
  73 }
  74
  75 void
  76 SourceFactory::init ()
  77 {
  78         PeaksToBuild = new Glib::Cond();
  79
  80         for (int n = 0; n < 2; ++n) {
  81                 Glib::Thread::create (sigc::ptr_fun (::peak_thread_work), false);
  82         }
  83 }
  84
  85 int
  86 SourceFactory::setup_peakfile (boost::shared_ptr<Source> s, bool async)
  87 {
  88         boost::shared_ptr<AudioSource> as (boost::dynamic_pointer_cast<AudioSource> (s));
  89
  90         if (as) {
  91
  92                 if (async) {
  93
  94                         Glib::Mutex::Lock lm (peak_building_lock);
  95                         files_with_peaks.push_back (boost::weak_ptr<AudioSource> (as));
  96                         PeaksToBuild->broadcast ();
  97
  98                 } else {
  99
 100                         if (as->setup_peakfile ()) {
 101                                 error << string_compose("SourceFactory: could not set up peakfile for %1", as->name()) << endmsg;
 102                                 return -1;
 103                         }
 104                 }
 105         }
 106
 107         return 0;
 108 }
 109
 110 boost::shared_ptr<Source>
 111 SourceFactory::createSilent (Session& s, const XMLNode& node, nframes_t nframes, float sr)
 112 {
 113         boost::shared_ptr<Source> ret (new SilentFileSource (s, node, nframes, sr));
 114         // no analysis data - the file is non-existent
 115         SourceCreated (ret);
 116         return ret;
 117 }
 118
 119 boost::shared_ptr<Source>
 120 SourceFactory::create (Session& s, const XMLNode& node, bool defer_peaks)
 121 {
 122         DataType type = DataType::AUDIO;
 123         const XMLProperty* prop = node.property("type");
 124
 125         if (prop) {
 126                 type = DataType(prop->value());
 127         }
 128
 129         if (type == DataType::AUDIO) {
 130
 131 #ifdef HAVE_COREAUDIO
 132
 133                 try {
 134                         boost::shared_ptr<Source> ret (new CoreAudioSource (s, node));
 135
 136                         if (setup_peakfile (ret, defer_peaks)) {
 137                                 return boost::shared_ptr<Source>();
 138                         }
 139
 140                         ret->check_for_analysis_data_on_disk ();
 141                         SourceCreated (ret);
 142                         return ret;
 143                 }
 144
 145
 146                 catch (failed_constructor& err) {
 147
 148                         /* this is allowed to throw */
 149
 150                         boost::shared_ptr<Source> ret (new SndFileSource (s, node));
 151
 152                         if (setup_peakfile (ret, defer_peaks)) {
 153                                 return boost::shared_ptr<Source>();
 154                         }
 155
 156                         ret->check_for_analysis_data_on_disk ();
 157                         SourceCreated (ret);
 158                         return ret;
 159                 }
 160 #else
 161                 /* this is allowed to throw */
 162
 163                 boost::shared_ptr<Source> ret (new SndFileSource (s, node));
 164
 165                 if (setup_peakfile (ret, defer_peaks)) {
 166                         return boost::shared_ptr<Source>();
 167                 }
 168
 169                 ret->check_for_analysis_data_on_disk ();
 170                 SourceCreated (ret);
 171                 return ret;
 172 #endif
 173
 174         } else if (type == DataType::MIDI) {
 175                 boost::shared_ptr<Source> ret (new SMFSource (s, node));
 176                 ret->check_for_analysis_data_on_disk ();
 177                 SourceCreated (ret);
 178                 return ret;
 179         }
 180
 181         return boost::shared_ptr<Source>();
 182 }
 183
 184 boost::shared_ptr<Source>
 185 SourceFactory::createReadable (DataType type, Session& s, string path, int chn, AudioFileSource::Flag flags, bool announce, bool defer_peaks)
 186 {
 187         if (type == DataType::AUDIO) {
 188
 189 #ifdef HAVE_COREAUDIO
 190                 try {
 191                         boost::shared_ptr<Source> ret (new CoreAudioSource (s, path, chn, flags));
 192
 193                         if (setup_peakfile (ret, defer_peaks)) {
 194                                 return boost::shared_ptr<Source>();
 195                         }
 196
 197                         ret->check_for_analysis_data_on_disk ();
 198                         if (announce) {
 199                                 SourceCreated (ret);
 200                         }
 201                         return ret;
 202                 }
 203
 204                 catch (failed_constructor& err) {
 205                         boost::shared_ptr<Source> ret (new SndFileSource (s, path, chn, flags));
 206                         if (setup_peakfile (ret, defer_peaks)) {
 207                                 return boost::shared_ptr<Source>();
 208                         }
 209                         ret->check_for_analysis_data_on_disk ();
 210                         if (announce) {
 211                                 SourceCreated (ret);
 212                         }
 213                         return ret;
 214                 }
 215 #else
 216                 boost::shared_ptr<Source> ret (new SndFileSource (s, path, chn, flags));
 217
 218                 if (setup_peakfile (ret, defer_peaks)) {
 219                         return boost::shared_ptr<Source>();
 220                 }
 221
 222                 ret->check_for_analysis_data_on_disk ();
 223                 if (announce) {
 224                         SourceCreated (ret);
 225                 }
 226
 227                 return ret;
 228 #endif
 229
 230         } else if (type == DataType::MIDI) {
 231
 232                 // FIXME: flags?
 233                 boost::shared_ptr<Source> ret (new SMFSource (s, path, SMFSource::Flag(0)));
 234
 235                 ret->check_for_analysis_data_on_disk ();
 236                 if (announce) {
 237                         SourceCreated (ret);
 238                 }
 239
 240                 return ret;
 241         }
 242
 243         return boost::shared_ptr<Source>();
 244 }
 245
 246 boost::shared_ptr<Source>
 247 SourceFactory::createWritable (DataType type, Session& s, std::string path, bool destructive, nframes_t rate, bool announce, bool defer_peaks)
 248 {
 249         /* this might throw failed_constructor(), which is OK */
 250
 251         if (type == DataType::AUDIO) {
 252                 boost::shared_ptr<Source> ret (new SndFileSource
 253                                                (s, path,
 254                                                 Config->get_native_file_data_format(),
 255                                                 Config->get_native_file_header_format(),
 256                                                 rate,
 257                                                 (destructive ? AudioFileSource::Flag (SndFileSource::default_writable_flags | AudioFileSource::Destructive) :
 258                                                  SndFileSource::default_writable_flags)));
 259
 260                 if (setup_peakfile (ret, defer_peaks)) {
 261                         return boost::shared_ptr<Source>();
 262                 }
 263
 264                 // no analysis data - this is a new file
 265
 266                 if (announce) {
 267                         SourceCreated (ret);
 268                 }
 269                 return ret;
 270
 271         } else if (type == DataType::MIDI) {
 272
 273                 boost::shared_ptr<Source> ret (new SMFSource (s, path));
 274
 275                 // no analysis data - this is a new file
 276
 277                 if (announce) {
 278                         SourceCreated (ret);
 279                 }
 280                 return ret;
 281
 282         }
 283
 284         return boost::shared_ptr<Source> ();
 285 }