new port design, probably about 90% done (i.e it mostly works and this commit is...
[ardour.git] / libs / ardour / source_factory.cc
index 560bf03e7f5eb802063c1f3636300f2af88e3fe7..89d4e3ed79fb3143547c95d6ef5be76048ea2522 100644 (file)
 */
 
 #include <pbd/error.h>
+#include <pbd/convert.h>
+#include <pbd/pthread_utils.h>
 
 #include <ardour/source_factory.h>
 #include <ardour/sndfilesource.h>
-#include <ardour/smf_source.h>
-#include <ardour/destructive_filesource.h>
+#include <ardour/silentfilesource.h>
 #include <ardour/configuration.h>
+#include <ardour/smf_source.h>
 
 #ifdef HAVE_COREAUDIO
 #include <ardour/coreaudiosource.h>
@@ -37,131 +39,167 @@ using namespace std;
 using namespace PBD;
 
 sigc::signal<void,boost::shared_ptr<Source> > SourceFactory::SourceCreated;
+Glib::Cond* SourceFactory::PeaksToBuild;
+Glib::StaticMutex SourceFactory::peak_building_lock;
+std::list<boost::weak_ptr<AudioSource> > SourceFactory::files_with_peaks;
 
-int
-SourceFactory::setup_peakfile (boost::shared_ptr<Source> s)
+static void 
+peak_thread_work ()
 {
-       boost::shared_ptr<AudioSource> as (boost::dynamic_pointer_cast<AudioSource> (s));
-       if (as) {
-               if (as->setup_peakfile ()) {
-                       error << string_compose("SourceFactory: could not set up peakfile for %1", as->name()) << endmsg;
-                       return -1;
+       PBD::ThreadCreated (pthread_self(), string ("peakbuilder-") + to_string (pthread_self(), std::dec));
+
+       while (true) {
+
+               SourceFactory::peak_building_lock.lock ();
+               
+         wait:
+               if (SourceFactory::files_with_peaks.empty()) {
+                       SourceFactory::PeaksToBuild->wait (SourceFactory::peak_building_lock);
                }
-       }
 
-       return 0;
+               if (SourceFactory::files_with_peaks.empty()) {
+                       goto wait;
+               }
+               
+               boost::shared_ptr<AudioSource> as (SourceFactory::files_with_peaks.front().lock());
+               SourceFactory::files_with_peaks.pop_front ();
+               SourceFactory::peak_building_lock.unlock ();
+               
+               if (!as) {
+                       continue;
+               }
+
+               as->setup_peakfile ();
+       }
 }
 
-#ifdef HAVE_COREAUDIO
-boost::shared_ptr<Source>
-SourceFactory::create (Session& s, const XMLNode& node)
+void
+SourceFactory::init ()
 {
-       DataType type = DataType::AUDIO;
-       const XMLProperty* prop = node.property("type");
-       if (prop) {
-               type = DataType(prop->value());
+       PeaksToBuild = new Glib::Cond();
+
+       for (int n = 0; n < 2; ++n) {
+               Glib::Thread::create (sigc::ptr_fun (::peak_thread_work), false);
        }
+}
 
-       if (type == DataType::AUDIO) {
+int
+SourceFactory::setup_peakfile (boost::shared_ptr<Source> s, bool async)
+{
+       boost::shared_ptr<AudioSource> as (boost::dynamic_pointer_cast<AudioSource> (s));
 
-               try {
-                       boost::shared_ptr<Source> ret (new CoreAudioSource (s, node));
-                       if (setup_peakfile (ret)) {
-                               return boost::shared_ptr<Source>();
-                       }
-                       SourceCreated (ret);
-                       return ret;
-               } 
+       if (as) {
 
-               catch (failed_constructor& err) {
-                       boost::shared_ptr<Source> ret (new SndFileSource (s, node));
-                       if (setup_peakfile (ret)) {
-                               return boost::shared_ptr<Source>();
-                       }
-                       SourceCreated (ret);
-                       return ret;
-               }
+               if (async) {
 
-       } else if (type == DataType::MIDI) {
+                       Glib::Mutex::Lock lm (peak_building_lock);
+                       files_with_peaks.push_back (boost::weak_ptr<AudioSource> (as));
+                       PeaksToBuild->broadcast ();
 
-               boost::shared_ptr<Source> ret (new SMFSource (node));
-               SourceCreated (ret);
-               return ret;
+               } else {
 
+                       if (as->setup_peakfile ()) {
+                               error << string_compose("SourceFactory: could not set up peakfile for %1", as->name()) << endmsg;
+                               return -1;
+                       }
+               }
        }
 
-       return boost::shared_ptr<Source>();
+       return 0;
 }
 
-#else
+boost::shared_ptr<Source>
+SourceFactory::createSilent (Session& s, const XMLNode& node, nframes_t nframes, float sr)
+{
+       boost::shared_ptr<Source> ret (new SilentFileSource (s, node, nframes, sr));
+       SourceCreated (ret);
+       return ret;
+}
 
 boost::shared_ptr<Source>
-SourceFactory::create (Session& s, const XMLNode& node)
+SourceFactory::create (Session& s, const XMLNode& node, bool defer_peaks)
 {
-       DataType type = DataType::AUDIO;
-       const XMLProperty* prop = node.property("type");
-       if (prop) {
-               type = DataType(prop->value());
-       }
+       DataType type = DataType::AUDIO;
+       const XMLProperty* prop = node.property("type");
 
-       if (type == DataType::AUDIO) {
-               
-               boost::shared_ptr<Source> ret (new SndFileSource (s, node));
+       if (prop) {
+               type = DataType(prop->value());
+       }
 
-               if (setup_peakfile (ret)) {
-                       return boost::shared_ptr<Source>();
-               }
-               
-               SourceCreated (ret);
-               return ret;
+       if (type == DataType::AUDIO) {
 
-       } else if (type == DataType::MIDI) {
-
-               boost::shared_ptr<Source> ret (new SMFSource (s, node));
-               
-               SourceCreated (ret);
-               return ret;
+#ifdef HAVE_COREAUDIO
 
-       }
+              try {
+                      boost::shared_ptr<Source> ret (new CoreAudioSource (s, node));
+                      
+                      if (setup_peakfile (ret, defer_peaks)) {
+                              return boost::shared_ptr<Source>();
+                      }
+                      
+                      SourceCreated (ret);
+                      return ret;
+              } 
+              
+              
+              catch (failed_constructor& err) {        
+                      
+                      /* this is allowed to throw */
+                      
+                      boost::shared_ptr<Source> ret (new SndFileSource (s, node));
+                      
+                      if (setup_peakfile (ret, defer_peaks)) {
+                              return boost::shared_ptr<Source>();
+                      }
+                      
+                      SourceCreated (ret);
+                      return ret;
+              }
+#else
+              /* this is allowed to throw */
+
+              boost::shared_ptr<Source> ret (new SndFileSource (s, node));
+              
+              if (setup_peakfile (ret, defer_peaks)) {
+                      return boost::shared_ptr<Source>();
+              }
+              
+              SourceCreated (ret);
+              return ret;
+#endif
+       
+       } else if (type == DataType::MIDI) {
+                  boost::shared_ptr<Source> ret (new SMFSource (s, node));
+                      
+                  SourceCreated (ret);
+                  return ret;
+       }
 
-       return boost::shared_ptr<Source> ();
+       return boost::shared_ptr<Source>();
 }
 
-#endif // HAVE_COREAUDIO
-
-#ifdef HAVE_COREAUDIO
 boost::shared_ptr<Source>
-SourceFactory::createReadable (DataType type, Session& s, string path, int chn, AudioFileSource::Flag flags, bool announce)
+SourceFactory::createReadable (DataType type, Session& s, string path, int chn, AudioFileSource::Flag flags, bool announce, bool defer_peaks)
 {
        if (type == DataType::AUDIO) {
-               if (!(flags & Destructive)) {
-
-                       try {
-                               boost::shared_ptr<Source> ret (new CoreAudioSource (s, path, chn, flags));
-                               if (setup_peakfile (ret)) {
-                                       return boost::shared_ptr<Source>();
-                               }
-                               if (announce) {
-                                       SourceCreated (ret);
-                               }
-                               return ret;
-                       }
+       
+#ifdef HAVE_COREAUDIO
+               try {
+                       boost::shared_ptr<Source> ret (new CoreAudioSource (s, path, chn, flags));
 
-                       catch (failed_constructor& err) {
-                               boost::shared_ptr<Source> ret (new SndFileSource (s, path, chn, flags));
-                               if (setup_peakfile (ret)) {
-                                       return boost::shared_ptr<Source>();
-                               }
-                               if (announce) {
-                                       SourceCreated (ret);
-                               }
-                               return ret;
+                       if (setup_peakfile (ret, defer_peaks)) {
+                               return boost::shared_ptr<Source>();
                        }
 
-               } else {
-
+                       if (announce) {
+                               SourceCreated (ret);
+                       }
+                       return ret;
+               }
+               
+               catch (failed_constructor& err) {
                        boost::shared_ptr<Source> ret (new SndFileSource (s, path, chn, flags));
-                       if (setup_peakfile (ret)) {
+                       if (setup_peakfile (ret, defer_peaks)) {
                                return boost::shared_ptr<Source>();
                        }
                        if (announce) {
@@ -169,31 +207,10 @@ SourceFactory::createReadable (DataType type, Session& s, string path, int chn,
                        }
                        return ret;
                }
-
-               return boost::shared_ptr<Source>();
-       } else if (type == DataType::MIDI) {
-
-               boost::shared_ptr<Source> ret (new SMFSource (s, node));
-               if (announce) {
-                       SourceCreated (ret);
-               }
-               return ret;
-
-       }
-
-       return boost::shared_ptr<Source>();
-}
-
 #else
-
-boost::shared_ptr<Source>
-SourceFactory::createReadable (DataType type, Session& s, string path, int chn, AudioFileSource::Flag flags, bool announce)
-{
-       if (type == DataType::AUDIO) {
-       
                boost::shared_ptr<Source> ret (new SndFileSource (s, path, chn, flags));
 
-               if (setup_peakfile (ret)) {
+               if (setup_peakfile (ret, defer_peaks)) {
                        return boost::shared_ptr<Source>();
                }
 
@@ -202,8 +219,8 @@ SourceFactory::createReadable (DataType type, Session& s, string path, int chn,
                }
 
                return ret;
-
-
+#endif
+               
        } else if (type == DataType::MIDI) {
 
                // FIXME: flags?
@@ -219,25 +236,24 @@ SourceFactory::createReadable (DataType type, Session& s, string path, int chn,
        return boost::shared_ptr<Source>();
 }
 
-#endif // HAVE_COREAUDIO
-
 boost::shared_ptr<Source>
-SourceFactory::createWritable (DataType type, Session& s, std::string path, bool destructive, nframes_t rate, bool announce)
+SourceFactory::createWritable (DataType type, Session& s, std::string path, bool destructive, nframes_t rate, bool announce, bool defer_peaks)
 {
        /* this might throw failed_constructor(), which is OK */
-
+       
        if (type == DataType::AUDIO) {
                boost::shared_ptr<Source> ret (new SndFileSource 
-                               (s, path, 
-                                Config->get_native_file_data_format(),
-                                Config->get_native_file_header_format(),
-                                rate,
-                                (destructive ? AudioFileSource::Flag (SndFileSource::default_writable_flags | AudioFileSource::Destructive) :
-                                 SndFileSource::default_writable_flags)));     
-
-               if (setup_peakfile (ret)) {
+                                              (s, path, 
+                                               Config->get_native_file_data_format(),
+                                               Config->get_native_file_header_format(),
+                                               rate,
+                                               (destructive ? AudioFileSource::Flag (SndFileSource::default_writable_flags | AudioFileSource::Destructive) :
+                                                SndFileSource::default_writable_flags)));      
+
+               if (setup_peakfile (ret, defer_peaks)) {
                        return boost::shared_ptr<Source>();
                }
+
                if (announce) {
                        SourceCreated (ret);
                }