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