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