merge with master
[ardour.git] / gtk2_ardour / editor_audio_import.cc
index ff91dc227cf59d79172c7a81db826c1b26e7b040..31ccdb7a533df0c93581feed8f6f5bb7317575ce 100644 (file)
@@ -1,5 +1,5 @@
 /*
-    Copyright (C) 2000-2006 Paul Davis 
+    Copyright (C) 2000-2006 Paul Davis
 
     This program is free software; you can redistribute it and/or modify
     it under the terms of the GNU General Public License as published by
 #include <sys/time.h>
 #include <errno.h>
 #include <unistd.h>
+#include <algorithm>
 
 #include <sndfile.h>
 
-#include <pbd/pthread_utils.h>
-#include <pbd/basename.h>
-#include <pbd/shortpath.h>
+#include "pbd/pthread_utils.h"
+#include "pbd/basename.h"
+#include "pbd/shortpath.h"
+#include "pbd/stateful_diff_command.h"
 
 #include <gtkmm2ext/choice.h>
-#include <gtkmm2ext/window_title.h>
-
-#include <ardour/session.h>
-#include <ardour/session_directory.h>
-#include <ardour/audioplaylist.h>
-#include <ardour/audioregion.h>
-#include <ardour/audio_diskstream.h>
-#include <ardour/utils.h>
-#include <ardour/audio_track.h>
-#include <ardour/audioplaylist.h>
-#include <ardour/audiofilesource.h>
-#include <ardour/region_factory.h>
-#include <ardour/source_factory.h>
-#include <pbd/memento_command.h>
+
+#include "ardour/audio_track.h"
+#include "ardour/audiofilesource.h"
+#include "ardour/audioregion.h"
+#include "ardour/midi_region.h"
+#include "ardour/midi_track.h"
+#include "ardour/operations.h"
+#include "ardour/region_factory.h"
+#include "ardour/smf_source.h"
+#include "ardour/source_factory.h"
+#include "ardour/utils.h"
+#include "pbd/memento_command.h"
 
 #include "ardour_ui.h"
 #include "editor.h"
 #include "sfdb_ui.h"
 #include "editing.h"
 #include "audio_time_axis.h"
+#include "midi_time_axis.h"
+#include "session_import_dialog.h"
 #include "utils.h"
+#include "gui_thread.h"
+#include "interthread_progress_window.h"
+#include "mouse_cursors.h"
+#include "editor_cursors.h"
 
 #include "i18n.h"
 
 using namespace std;
 using namespace ARDOUR;
 using namespace PBD;
-using namespace sigc;
 using namespace Gtk;
 using namespace Gtkmm2ext;
 using namespace Editing;
-using Glib::ustring;
+using std::string;
 
 /* Functions supporting the incorporation of external (non-captured) audio material into ardour */
 
 void
 Editor::add_external_audio_action (ImportMode mode_hint)
 {
-       if (session == 0) {
-               MessageDialog msg (0, _("You can't import or embed an audiofile until you have a session loaded."));
+       if (_session == 0) {
+               MessageDialog msg (_("You can't import or embed an audiofile until you have a session loaded."));
                msg.run ();
                return;
        }
-       
+
        if (sfbrowser == 0) {
-               sfbrowser = new SoundFileOmega (*this, _("Add existing audio"), session, 0, true, mode_hint);
+               sfbrowser = new SoundFileOmega (_("Add Existing Media"), _session, 0, true, mode_hint);
        } else {
                sfbrowser->set_mode (mode_hint);
        }
@@ -86,89 +91,116 @@ Editor::add_external_audio_action (ImportMode mode_hint)
 void
 Editor::external_audio_dialog ()
 {
-       vector<Glib::ustring> paths;
-       uint32_t track_cnt;
+       vector<string> paths;
+       uint32_t audio_track_cnt;
+       uint32_t midi_track_cnt;
 
-       if (session == 0) {
-               MessageDialog msg (0, _("You can't import or embed an audiofile until you have a session loaded."));
+       if (_session == 0) {
+               MessageDialog msg (_("You can't import or embed an audiofile until you have a session loaded."));
                msg.run ();
                return;
        }
-       
-       track_cnt = 0;
+
+       audio_track_cnt = 0;
+       midi_track_cnt = 0;
 
        for (TrackSelection::iterator x = selection->tracks.begin(); x != selection->tracks.end(); ++x) {
                AudioTimeAxisView* atv = dynamic_cast<AudioTimeAxisView*>(*x);
-               
-               if (!atv) {
-                       continue;
-               } else if (atv->is_audio_track()) {
-                       track_cnt++;
+
+               if (atv) {
+                       if (atv->is_audio_track()) {
+                               audio_track_cnt++;
+                       } 
+
+               } else {
+                       MidiTimeAxisView* mtv = dynamic_cast<MidiTimeAxisView*>(*x);
+
+                       if (mtv) {
+                               if (mtv->is_midi_track()) {
+                                       midi_track_cnt++;
+                               }
+                       }
                }
        }
 
        if (sfbrowser == 0) {
-               sfbrowser = new SoundFileOmega (*this, _("Add existing audio"), session, track_cnt, true);
+               sfbrowser = new SoundFileOmega (_("Add Existing Media"), _session, audio_track_cnt, midi_track_cnt, true);
        } else {
-               sfbrowser->reset (track_cnt);
+               sfbrowser->reset (audio_track_cnt, midi_track_cnt);
        }
 
        sfbrowser->show_all ();
+}
 
-  again:
-       int response = sfbrowser->run ();
+void
+Editor::session_import_dialog ()
+{
+       SessionImportDialog dialog (_session);
+       ensure_float (dialog);
+       dialog.run ();
+}
 
-       switch (response) {
-       case RESPONSE_APPLY:
-               // leave the dialog open
-               break;
+typedef std::map<PBD::ID,boost::shared_ptr<ARDOUR::Source> > SourceMap;
+
+/**
+ * Updating is still disabled, see note in libs/ardour/import.cc Session::import_files()
+ *
+ * all_or_nothing:
+ *   true  = show "Update", "Import" and "Skip"
+ *   false = show "Import", and "Cancel"
+ *
+ * Returns:
+ *     0  To update an existing source of the same name
+ *     1  To import/embed the file normally (make sure the new name will be unique)
+ *     2  If the user wants to skip this file
+ **/
+int
+Editor::check_whether_and_how_to_import(string path, bool all_or_nothing)
+{
+       string wave_name (Glib::path_get_basename(path));
 
-       case RESPONSE_OK:
-               sfbrowser->hide ();
-               break;
+       SourceMap all_sources = _session->get_sources();
+       bool already_exists = false;
+       uint32_t existing;
 
-       default:
-               // cancel from the browser - we are done
-               sfbrowser->hide ();
-               return;
+       if ((existing = _session->count_sources_by_origin (path)) > 0) {
+               already_exists = true;
        }
 
-       /* lets do it */
-       
-       paths = sfbrowser->get_paths ();
+       int function = 1;
 
-       ImportPosition pos = sfbrowser->get_position ();
-       ImportMode mode = sfbrowser->get_mode ();
-       ImportDisposition chns = sfbrowser->get_channel_disposition ();
-       nframes64_t where;
+       if (already_exists) {
+               string message;
+               if (all_or_nothing) {
+                       // updating is still disabled
+                       //message = string_compose(_("The session already contains a source file named %1. Do you want to update that file (and thus all regions using the file) or import this file as a new file?"),wave_name);
+                       message = string_compose (_("The session already contains a source file named %1.  Do you want to import %1 as a new file, or skip it?"), wave_name);
+               } else {
+                       message = string_compose (_("The session already contains a source file named %1.  Do you want to import %2 as a new source, or skip it?"), wave_name, wave_name);
 
-       switch (pos) {
-       case ImportAtEditPoint:
-               where = get_preferred_edit_position ();
-               break;
-       case ImportAtTimestamp:
-               where = -1;
-               break;
-       case ImportAtPlayhead:
-               where = playhead_cursor->current_frame;
-               break;
-       case ImportAtStart:
-               where = session->current_start_frame();
-               break;
-       }
+               }
+               MessageDialog dialog(message, false, Gtk::MESSAGE_QUESTION, Gtk::BUTTONS_NONE, true);
+
+               if (all_or_nothing) {
+                       // disabled
+                       //dialog.add_button("Update", 0);
+                       dialog.add_button("Import", 1);
+                       dialog.add_button("Skip",   2);
+               } else {
+                       dialog.add_button("Import", 1);
+                       dialog.add_button("Cancel", 2);
+               }
 
-       SrcQuality quality = sfbrowser->get_src_quality();
+               //dialog.add_button("Skip all", 4); // All or rest?
 
-       if (sfbrowser->copy_files_btn.get_active()) {
-               do_import (paths, chns, mode, quality, where);
-       } else {
-               do_embed (paths, chns, mode, where);
-       }
+               dialog.show();
+
+               function = dialog.run ();
 
-       if (response == RESPONSE_APPLY) {
-               sfbrowser->clear_selection ();
-               goto again;
+               dialog.hide();
        }
+
+       return function;
 }
 
 boost::shared_ptr<AudioTrack>
@@ -176,141 +208,194 @@ Editor::get_nth_selected_audio_track (int nth) const
 {
        AudioTimeAxisView* atv;
        TrackSelection::iterator x;
-       
+
        for (x = selection->tracks.begin(); nth > 0 && x != selection->tracks.end(); ++x) {
 
                atv = dynamic_cast<AudioTimeAxisView*>(*x);
-               
+
                if (!atv) {
                        continue;
                } else if (atv->is_audio_track()) {
                        --nth;
                }
        }
-       
+
        if (x == selection->tracks.end()) {
                atv = dynamic_cast<AudioTimeAxisView*>(selection->tracks.back());
        } else {
                atv = dynamic_cast<AudioTimeAxisView*>(*x);
        }
-       
+
        if (!atv || !atv->is_audio_track()) {
                return boost::shared_ptr<AudioTrack>();
        }
-       
+
        return atv->audio_track();
-}      
+}
 
-void
-Editor::do_import (vector<ustring> paths, ImportDisposition chns, ImportMode mode, SrcQuality quality, nframes64_t& pos)
+boost::shared_ptr<MidiTrack>
+Editor::get_nth_selected_midi_track (int nth) const
 {
-       boost::shared_ptr<AudioTrack> track;
-       vector<ustring> to_import;
-       bool ok = false;
-       int nth = 0;
+       MidiTimeAxisView* mtv;
+       TrackSelection::iterator x;
+
+       for (x = selection->tracks.begin(); nth > 0 && x != selection->tracks.end(); ++x) {
+
+               mtv = dynamic_cast<MidiTimeAxisView*>(*x);
 
-       if (interthread_progress_window == 0) {
-               build_interthread_progress_window ();
+               if (!mtv) {
+                       continue;
+               } else if (mtv->is_midi_track()) {
+                       --nth;
+               }
        }
 
-       switch (chns) {
-       case Editing::ImportDistinctFiles:
-               for (vector<ustring>::iterator a = paths.begin(); a != paths.end(); ++a) {
+       if (x == selection->tracks.end()) {
+               mtv = dynamic_cast<MidiTimeAxisView*>(selection->tracks.back());
+       } else {
+               mtv = dynamic_cast<MidiTimeAxisView*>(*x);
+       }
 
-                       to_import.clear ();
-                       to_import.push_back (*a);
+       if (!mtv || !mtv->is_midi_track()) {
+               return boost::shared_ptr<MidiTrack>();
+       }
 
-                       if (mode == Editing::ImportToTrack) {
-                               track = get_nth_selected_audio_track (nth++);
-                       }
-                       
-                       if (import_sndfiles (to_import, mode, quality, pos, 1, -1, track)) {
-                               goto out;
-                       }
+       return mtv->midi_track();
+}
 
-               }
-               break;
+void
+Editor::do_import (vector<string> paths, ImportDisposition chns, ImportMode mode, SrcQuality quality, framepos_t& pos)
+{
+       boost::shared_ptr<Track> track;
+       vector<string> to_import;
+       int nth = 0;
+       bool use_timestamp = (pos == -1);
 
-       case Editing::ImportDistinctChannels:
-               for (vector<ustring>::iterator a = paths.begin(); a != paths.end(); ++a) {
+       current_interthread_info = &import_status;
+       import_status.current = 1;
+       import_status.total = paths.size ();
+       import_status.all_done = false;
 
-                       to_import.clear ();
-                       to_import.push_back (*a);
+       ImportProgressWindow ipw (&import_status, _("Import"), _("Cancel Import"));
 
-                       if (import_sndfiles (to_import, mode, quality, pos, -1, -1, track)) {
-                               goto out;
-                       }
+       bool ok = true;
 
-               }
-               break;
+       if (chns == Editing::ImportMergeFiles) {
 
-       case Editing::ImportMergeFiles:
                /* create 1 region from all paths, add to 1 track,
                   ignore "track"
                */
-               if (import_sndfiles (paths, mode, quality, pos, 1, 1, track)) {
-                       goto out;
+
+               bool cancel = false;
+               for (vector<string>::iterator a = paths.begin(); a != paths.end(); ++a) {
+                       int check = check_whether_and_how_to_import(*a, false);
+                       if (check == 2) {
+                               cancel = true;
+                               break;
+                       }
                }
-               break;
 
-       case Editing::ImportSerializeFiles:
-               for (vector<ustring>::iterator a = paths.begin(); a != paths.end(); ++a) {
+               if (cancel) {
+                       ok = false;
+               } else {
+                       ipw.show ();
+                       ok = (import_sndfiles (paths, mode, quality, pos, 1, 1, track, false) == 0);
+               }
 
-                       to_import.clear ();
-                       to_import.push_back (*a);
-                       
-                       /* create 1 region from this path, add to 1 track,
-                          reuse "track" across paths
-                       */
+       } else {
 
-                       if (import_sndfiles (to_import, mode, quality, pos, 1, 1, track)) {
-                               goto out;
+               bool replace = false;
+
+               for (vector<string>::iterator a = paths.begin(); a != paths.end(); ++a) {
+
+                       const int check = check_whether_and_how_to_import (*a, true);
+
+                       switch (check) {
+                       case 2:
+                               // user said skip
+                               continue;
+                       case 0:
+                               fatal << "Updating existing sources should be disabled!" << endmsg;
+                               /* NOTREACHED*/
+                               break;
+                       case 1:
+                               replace = false;
+                               break;
+                       default:
+                               fatal << "Illegal return " << check <<  " from check_whether_and_how_to_import()!" << endmsg;
+                               /* NOTREACHED*/
+                       }
+
+                       /* have to reset this for every file we handle */
+
+                       if (use_timestamp) {
+                               pos = -1;
                        }
 
+                       ipw.show ();
+
+                       switch (chns) {
+                       case Editing::ImportDistinctFiles:
+
+                               to_import.clear ();
+                               to_import.push_back (*a);
+
+                               if (mode == Editing::ImportToTrack) {
+                                       track = get_nth_selected_audio_track (nth++);
+                               }
+
+                               ok = (import_sndfiles (to_import, mode, quality, pos, 1, -1, track, replace) == 0);
+                               break;
+
+                       case Editing::ImportDistinctChannels:
+
+                               to_import.clear ();
+                               to_import.push_back (*a);
+
+                               ok = (import_sndfiles (to_import, mode, quality, pos, -1, -1, track, replace) == 0);
+                               break;
+
+                       case Editing::ImportSerializeFiles:
+
+                               to_import.clear ();
+                               to_import.push_back (*a);
+
+                               ok = (import_sndfiles (to_import, mode, quality, pos, 1, 1, track, replace) == 0);
+                               break;
+
+                       case Editing::ImportMergeFiles:
+                               // Not entered, handled in earlier if() branch
+                               break;
+                       }
                }
-               break;
        }
 
-       ok = true;
-       
-  out: 
        if (ok) {
-               session->save_state ("");
+               _session->save_state ("");
        }
 
-       interthread_progress_window->hide_all ();
-}
-
-bool
-Editor::idle_do_embed (vector<ustring> paths, ImportDisposition chns, ImportMode mode, nframes64_t& pos)
-{
-       _do_embed (paths, chns, mode, pos);
-       return false;
-}
-
-void
-Editor::do_embed (vector<ustring> paths, ImportDisposition chns, ImportMode mode, nframes64_t& pos)
-{
-#ifdef GTKOSX
-       Glib::signal_idle().connect (bind (mem_fun (*this, &Editor::idle_do_embed), paths, chns, mode, pos));
-#else
-       _do_embed (paths, chns, mode, pos);
-#endif
+       import_status.all_done = true;
 }
 
 void
-Editor::_do_embed (vector<ustring> paths, ImportDisposition chns, ImportMode mode, nframes64_t& pos)
+Editor::do_embed (vector<string> paths, ImportDisposition chns, ImportMode mode, framepos_t& pos)
 {
-       boost::shared_ptr<AudioTrack> track;
+       boost::shared_ptr<Track> track;
        bool check_sample_rate = true;
        bool ok = false;
-       vector<ustring> to_embed;
+       vector<string> to_embed;
        bool multi = paths.size() > 1;
        int nth = 0;
+       bool use_timestamp = (pos == -1);
 
        switch (chns) {
        case Editing::ImportDistinctFiles:
-               for (vector<ustring>::iterator a = paths.begin(); a != paths.end(); ++a) {
+               for (vector<string>::iterator a = paths.begin(); a != paths.end(); ++a) {
+
+                       /* have to reset this for every file we handle */
+                       if (use_timestamp) {
+                               pos = -1;
+                       }
 
                        to_embed.clear ();
                        to_embed.push_back (*a);
@@ -324,9 +409,14 @@ Editor::_do_embed (vector<ustring> paths, ImportDisposition chns, ImportMode mod
                        }
                }
                break;
-               
+
        case Editing::ImportDistinctChannels:
-               for (vector<ustring>::iterator a = paths.begin(); a != paths.end(); ++a) {
+               for (vector<string>::iterator a = paths.begin(); a != paths.end(); ++a) {
+
+                       /* have to reset this for every file we handle */
+                       if (use_timestamp) {
+                               pos = -1;
+                       }
 
                        to_embed.clear ();
                        to_embed.push_back (*a);
@@ -341,10 +431,15 @@ Editor::_do_embed (vector<ustring> paths, ImportDisposition chns, ImportMode mod
                if (embed_sndfiles (paths, multi, check_sample_rate, mode, pos, 1, 1, track) < -1) {
                        goto out;
                }
-       break;
+               break;
 
        case Editing::ImportSerializeFiles:
-               for (vector<ustring>::iterator a = paths.begin(); a != paths.end(); ++a) {
+               for (vector<string>::iterator a = paths.begin(); a != paths.end(); ++a) {
+
+                       /* have to reset this for every file we handle */
+                       if (use_timestamp) {
+                               pos = -1;
+                       }
 
                        to_embed.clear ();
                        to_embed.push_back (*a);
@@ -357,76 +452,74 @@ Editor::_do_embed (vector<ustring> paths, ImportDisposition chns, ImportMode mod
        }
 
        ok = true;
-       
-  out: 
+
+  out:
        if (ok) {
-               session->save_state ("");
+               _session->save_state ("");
        }
 }
 
 int
-Editor::import_sndfiles (vector<ustring> paths, ImportMode mode, SrcQuality quality, nframes64_t& pos, 
-                        int target_regions, int target_tracks, boost::shared_ptr<AudioTrack>& track)
+Editor::import_sndfiles (vector<string> paths, ImportMode mode, SrcQuality quality, framepos_t& pos,
+                        int target_regions, int target_tracks, boost::shared_ptr<Track>& track, bool replace)
 {
-       WindowTitle title = string_compose (_("importing %1"), paths.front());
-
-       interthread_progress_window->set_title (title.get_string());
-       interthread_progress_window->set_position (Gtk::WIN_POS_MOUSE);
-       interthread_progress_window->show_all ();
-       interthread_progress_bar.set_fraction (0.0f);
-       interthread_cancel_label.set_text (_("Cancel Import"));
-       current_interthread_info = &import_status;
-
        import_status.paths = paths;
        import_status.done = false;
        import_status.cancel = false;
        import_status.freeze = false;
-       import_status.done = 0.0;
        import_status.quality = quality;
+       import_status.replace_existing_source = replace;
 
-       interthread_progress_connection = Glib::signal_timeout().connect 
-               (bind (mem_fun(*this, &Editor::import_progress_timeout), (gpointer) 0), 100);
-       
-       track_canvas.get_window()->set_cursor (Gdk::Cursor (Gdk::WATCH));
-       ARDOUR_UI::instance()->flush_pending ();
+       import_status.mode = mode;
+       import_status.pos = pos;
+       import_status.target_tracks = target_tracks;
+       import_status.target_regions = target_regions;
+       import_status.track = track;
+       import_status.replace = replace;
 
-       /* start import thread for this spec. this will ultimately call Session::import_audiofiles()
-          and if successful will add the file(s) as a region to the session region list.
+       set_canvas_cursor (_cursors->wait);
+       gdk_flush ();
+
+       /* start import thread for this spec. this will ultimately call Session::import_files()
+          which, if successful, will add the files as regions to the region list. its up to us
+          (the GUI) to direct additional steps after that.
        */
-       
-       pthread_create_and_store ("import", &import_status.thread, 0, _import_thread, this);
+
+       pthread_create_and_store ("import", &import_status.thread, _import_thread, this);
        pthread_detach (import_status.thread);
-       
-       while (!(import_status.done || import_status.cancel)) {
+
+       while (!import_status.done && !import_status.cancel) {
                gtk_main_iteration ();
        }
 
-       interthread_progress_window->hide ();
-       
        import_status.done = true;
-       interthread_progress_connection.disconnect ();
-       
-       /* import thread finished - see if we should build a new track */
 
-       boost::shared_ptr<AudioRegion> r;
-       
-       if (import_status.cancel || import_status.sources.empty()) {
-               goto out;
-       }
+       int result = -1;
 
-       if (add_sources (paths, import_status.sources, pos, mode, target_regions, target_tracks, track, false) == 0) {
-               session->save_state ("");
+       if (!import_status.cancel && !import_status.sources.empty()) {
+               result = add_sources (
+                       import_status.paths,
+                       import_status.sources,
+                       import_status.pos,
+                       import_status.mode,
+                       import_status.target_regions,
+                       import_status.target_tracks,
+                       track, false
+                       );
+
+               /* update position from results */
+
+               pos = import_status.pos;
        }
 
-  out:
-       track_canvas.get_window()->set_cursor (*current_canvas_cursor);
-       return 0;
+       set_canvas_cursor (current_canvas_cursor);
+       return result;
 }
 
 int
-Editor::embed_sndfiles (vector<Glib::ustring> paths, bool multifile,
-                       bool& check_sample_rate, ImportMode mode, nframes64_t& pos, int target_regions, int target_tracks,
-                       boost::shared_ptr<AudioTrack>& track)
+Editor::embed_sndfiles (vector<string> paths, bool multifile,
+                       bool& check_sample_rate, ImportMode mode, framepos_t& pos, int target_regions, int target_tracks,
+                       boost::shared_ptr<Track>& track)
 {
        boost::shared_ptr<AudioFileSource> source;
        SourceList sources;
@@ -434,67 +527,38 @@ Editor::embed_sndfiles (vector<Glib::ustring> paths, bool multifile,
        SoundFileInfo finfo;
        int ret = 0;
 
-       track_canvas.get_window()->set_cursor (Gdk::Cursor (Gdk::WATCH));
-       ARDOUR_UI::instance()->flush_pending ();
-
-       for (vector<Glib::ustring>::iterator p = paths.begin(); p != paths.end(); ++p) {
-
-               ustring path = *p;
-
-               /* lets see if we can link it into the session */
-               
-               sys::path tmp = session->session_directory().sound_path() / Glib::path_get_basename(path);
-               linked_path = tmp.to_string();
-               
-               if (link (path.c_str(), linked_path.c_str()) == 0) {
-
-                       /* there are many reasons why link(2) might have failed.
-                          but if it succeeds, we now have a link in the
-                          session sound dir that will protect against
-                          unlinking of the original path. nice.
-                       */
-                       
-                       path = linked_path;
-
-               } else {
+       set_canvas_cursor (_cursors->wait);
+       gdk_flush ();
 
-                       /* one possible reason is that its already linked */
+       for (vector<string>::iterator p = paths.begin(); p != paths.end(); ++p) {
 
-                       if (errno == EEXIST) {
-                               struct stat sb;
+               string path = *p;
+               string error_msg;
 
-                               if (stat (linked_path.c_str(), &sb) == 0) {
-                                       if (sb.st_nlink > 1) { // its a hard link, assume its the one we want
-                                               path = linked_path;
-                                       }
-                               }
-                       }
-               }
-               
                /* note that we temporarily truncated _id at the colon */
-               
-               string error_msg;
 
                if (!AudioFileSource::get_soundfile_info (path, finfo, error_msg)) {
                        error << string_compose(_("Editor: cannot open file \"%1\", (%2)"), path, error_msg ) << endmsg;
                        goto out;
                }
-               
-               if (check_sample_rate  && (finfo.samplerate != (int) session->frame_rate())) {
+
+               if (check_sample_rate  && (finfo.samplerate != (int) _session->frame_rate())) {
                        vector<string> choices;
-                       
+
                        if (multifile) {
                                choices.push_back (_("Cancel entire import"));
                                choices.push_back (_("Don't embed it"));
                                choices.push_back (_("Embed all without questions"));
-                       
+
                                Gtkmm2ext::Choice rate_choice (
-                                       string_compose (_("%1\nThis audiofile's sample rate doesn't match the session sample rate!"), 
+                                       _("Sample rate"),
+                                       string_compose (_("%1\nThis audiofile's sample rate doesn't match the session sample rate!"),
                                                        short_path (path, 40)),
-                                       choices, false);
-                               
+                                       choices, false
+                                       );
+
                                int resx = rate_choice.run ();
-                               
+
                                switch (resx) {
                                case 0: /* stop a multi-file import */
                                        ret = -2;
@@ -514,13 +578,15 @@ Editor::embed_sndfiles (vector<Glib::ustring> paths, bool multifile,
                        } else {
                                choices.push_back (_("Cancel"));
                                choices.push_back (_("Embed it anyway"));
-                       
+
                                Gtkmm2ext::Choice rate_choice (
+                                       _("Sample rate"),
                                        string_compose (_("%1\nThis audiofile's sample rate doesn't match the session sample rate!"), path),
-                                       choices, false);
-                               
+                                       choices, false
+                                       );
+
                                int resx = rate_choice.run ();
-                               
+
                                switch (resx) {
                                case 0: /* don't import */
                                        ret = -1;
@@ -533,8 +599,8 @@ Editor::embed_sndfiles (vector<Glib::ustring> paths, bool multifile,
                                }
                        }
                }
-               
-               track_canvas.get_window()->set_cursor (Gdk::Cursor (Gdk::WATCH));
+
+               set_canvas_cursor (_cursors->wait);
 
                for (int n = 0; n < finfo.channels; ++n) {
                        try {
@@ -543,25 +609,27 @@ Editor::embed_sndfiles (vector<Glib::ustring> paths, bool multifile,
 
                                boost::shared_ptr<Source> s;
 
-                               if ((s = session->source_by_path_and_channel (path, n)) == 0) {
-                                       source = boost::dynamic_pointer_cast<AudioFileSource> (SourceFactory::createReadable 
-                                                                                              (DataType::AUDIO, *session, path,  n,
-                                                                                               (mode == ImportAsTapeTrack ? 
-                                                                                                AudioFileSource::Destructive : 
-                                                                                                AudioFileSource::Flag (0)),
-                                                                                               true, true));
+                               if ((s = _session->source_by_path_and_channel (path, n)) == 0) {
+
+                                       source = boost::dynamic_pointer_cast<AudioFileSource> (
+                                               SourceFactory::createExternal (DataType::AUDIO, *_session,
+                                                                              path, n,
+                                                                              (mode == ImportAsTapeTrack
+                                                                               ? Source::Destructive
+                                                                               : Source::Flag (0)),
+                                                                       true, true));
                                } else {
                                        source = boost::dynamic_pointer_cast<AudioFileSource> (s);
                                }
 
                                sources.push_back(source);
-                       } 
-                       
+                       }
+
                        catch (failed_constructor& err) {
                                error << string_compose(_("could not open %1"), path) << endmsg;
                                goto out;
                        }
-                       
+
                        ARDOUR_UI::instance()->flush_pending ();
                }
        }
@@ -573,25 +641,25 @@ Editor::embed_sndfiles (vector<Glib::ustring> paths, bool multifile,
        ret = add_sources (paths, sources, pos, mode, target_regions, target_tracks, track, true);
 
   out:
-       track_canvas.get_window()->set_cursor (*current_canvas_cursor);
+       set_canvas_cursor (current_canvas_cursor);
        return ret;
 }
 
 int
-Editor::add_sources (vector<Glib::ustring> paths, SourceList& sources, nframes64_t& pos, ImportMode mode, 
-                    int target_regions, int target_tracks, boost::shared_ptr<AudioTrack>& track, bool add_channel_suffix)
+Editor::add_sources (vector<string> paths, SourceList& sources, framepos_t& pos, ImportMode mode,
+                    int target_regions, int target_tracks, boost::shared_ptr<Track>& track, bool /*add_channel_suffix*/)
 {
-       vector<boost::shared_ptr<AudioRegion> > regions;
-       ustring region_name;
+       vector<boost::shared_ptr<Region> > regions;
+       string region_name;
        uint32_t input_chan = 0;
        uint32_t output_chan = 0;
+       bool use_timestamp;
 
-       if (pos == -1) { // "use timestamp"
-               if (sources[0]->natural_position() != 0) {
-                       pos = sources[0]->natural_position();
-               } else {
-                       pos = get_preferred_edit_position ();
-               }
+       use_timestamp = (pos == -1);
+
+       // kludge (for MIDI we're abusing "channel" for "track" here)
+       if (SMFSource::safe_midi_file_extension (paths.front())) {
+               target_regions = -1;
        }
 
        if (target_regions == 1) {
@@ -599,12 +667,32 @@ Editor::add_sources (vector<Glib::ustring> paths, SourceList& sources, nframes64
                /* take all the sources we have and package them up as a region */
 
                region_name = region_name_from_path (paths.front(), (sources.size() > 1), false);
-               
-               regions.push_back (boost::dynamic_pointer_cast<AudioRegion> 
-                                  (RegionFactory::create (sources, 0, sources[0]->length(), region_name, 0,
-                                                          Region::Flag (Region::DefaultFlags|Region::WholeFile|Region::External))));
-               
-       } else if (target_regions == -1) {
+
+               /* we checked in import_sndfiles() that there were not too many */
+
+               while (RegionFactory::region_by_name (region_name)) {
+                       region_name = bump_name_once (region_name, '.');
+               }
+
+               PropertyList plist;
+
+               plist.add (ARDOUR::Properties::start, 0);
+               plist.add (ARDOUR::Properties::length, sources[0]->length (pos));
+               plist.add (ARDOUR::Properties::name, region_name);
+               plist.add (ARDOUR::Properties::layer, 0);
+               plist.add (ARDOUR::Properties::whole_file, true);
+               plist.add (ARDOUR::Properties::external, true);
+
+               boost::shared_ptr<Region> r = RegionFactory::create (sources, plist);
+
+               if (use_timestamp && boost::dynamic_pointer_cast<AudioRegion>(r)) {
+                       boost::dynamic_pointer_cast<AudioRegion>(r)->special_set_position(sources[0]->natural_position());
+               }
+
+               regions.push_back (r);
+
+
+       } else if (target_regions == -1 || target_regions > 1) {
 
                /* take each source and create a region for each one */
 
@@ -616,15 +704,41 @@ Editor::add_sources (vector<Glib::ustring> paths, SourceList& sources, nframes64
 
                        just_one.clear ();
                        just_one.push_back (*x);
-                       
-                       boost::shared_ptr<AudioFileSource> afs = boost::dynamic_pointer_cast<AudioFileSource> (*x);
 
-                       region_name = region_name_from_path (afs->path(), false, true, sources.size(), n);
+                       boost::shared_ptr<FileSource> fs = boost::dynamic_pointer_cast<FileSource> (*x);
 
-                       regions.push_back (boost::dynamic_pointer_cast<AudioRegion> 
-                                          (RegionFactory::create (just_one, 0, (*x)->length(), region_name, 0,
-                                                                  Region::Flag (Region::DefaultFlags|Region::WholeFile|Region::External))));
+                       if (fs) {
+                               region_name = region_name_from_path (fs->path(), false, false, sources.size(), n);
+                       } else{
+                               region_name = (*x)->name();
+                       }
 
+                       PropertyList plist;
+
+                       /* Fudge region length to ensure it is non-zero; make it 1 beat at 120bpm
+                          for want of a better idea.  It can't be too small, otherwise if this
+                          is a MIDI region the conversion from frames -> beats -> frames will
+                          round it back down to 0 again.
+                       */
+                       framecnt_t len = (*x)->length (pos);
+                       if (len == 0) {
+                               len = (60.0 / 120.0) * _session->frame_rate ();
+                       }
+
+                       plist.add (ARDOUR::Properties::start, 0);
+                       plist.add (ARDOUR::Properties::length, len);
+                       plist.add (ARDOUR::Properties::name, region_name);
+                       plist.add (ARDOUR::Properties::layer, 0);
+                       plist.add (ARDOUR::Properties::whole_file, true);
+                       plist.add (ARDOUR::Properties::external, true);
+
+                       boost::shared_ptr<Region> r = RegionFactory::create (just_one, plist);
+
+                       if (use_timestamp && boost::dynamic_pointer_cast<AudioRegion>(r)) {
+                               boost::dynamic_pointer_cast<AudioRegion>(r)->special_set_position((*x)->natural_position());
+                       }
+
+                       regions.push_back (r);
                }
        }
 
@@ -639,24 +753,65 @@ Editor::add_sources (vector<Glib::ustring> paths, SourceList& sources, nframes64
        }
 
        if (Config->get_output_auto_connect() & AutoConnectMaster) {
-               output_chan = (session->master_out() ? session->master_out()->n_inputs().n_audio() : input_chan);
+               output_chan = (_session->master_out() ? _session->master_out()->n_inputs().n_audio() : input_chan);
        } else {
                output_chan = input_chan;
        }
 
        int n = 0;
+       framepos_t rlen = 0;
+
+       begin_reversible_command (Operations::insert_file);
+       
+       for (vector<boost::shared_ptr<Region> >::iterator r = regions.begin(); r != regions.end(); ++r, ++n) {
+               boost::shared_ptr<AudioRegion> ar = boost::dynamic_pointer_cast<AudioRegion> (*r);
 
-       for (vector<boost::shared_ptr<AudioRegion> >::iterator r = regions.begin(); r != regions.end(); ++r, ++n) {
+               if (use_timestamp) {
+                        if (ar) {
 
-               finish_bringing_in_audio (*r, input_chan, output_chan, pos, mode, track);
+                                /* get timestamp for this region */
+
+                                const boost::shared_ptr<Source> s (ar->sources().front());
+                                const boost::shared_ptr<AudioSource> as = boost::dynamic_pointer_cast<AudioSource> (s);
+
+                                assert (as);
+
+                                if (as->natural_position() != 0) {
+                                        pos = as->natural_position();
+                                } else if (target_tracks == 1) {
+                                        /* hmm, no timestamp available, put it after the previous region
+                                         */
+                                        if (n == 0) {
+                                                pos = get_preferred_edit_position ();
+                                        } else {
+                                                pos += rlen;
+                                        }
+                                } else {
+                                        pos = get_preferred_edit_position ();
+                                }
+                        } else {
+                                /* should really get first position in MIDI file, but for now, use edit position*/
+                                pos = get_preferred_edit_position ();
+                        }
+                }
+
+
+               finish_bringing_in_material (*r, input_chan, output_chan, pos, mode, track);
+
+               rlen = (*r)->length();
 
                if (target_tracks != 1) {
                        track.reset ();
                } else {
-                       pos += (*r)->length();
-               } 
+                       if (!use_timestamp || !ar) {
+                               /* line each one up right after the other */
+                               pos += (*r)->length();
+                       }
+               }
        }
 
+       commit_reversible_command ();
+       
        /* setup peak file building in another thread */
 
        for (SourceList::iterator x = sources.begin(); x != sources.end(); ++x) {
@@ -665,63 +820,90 @@ Editor::add_sources (vector<Glib::ustring> paths, SourceList& sources, nframes64
 
        return 0;
 }
-       
+
 int
-Editor::finish_bringing_in_audio (boost::shared_ptr<AudioRegion> region, uint32_t in_chans, uint32_t out_chans, nframes64_t& pos, 
-                                 ImportMode mode, boost::shared_ptr<AudioTrack>& existing_track)
+Editor::finish_bringing_in_material (boost::shared_ptr<Region> region, uint32_t in_chans, uint32_t out_chans, framepos_t& pos,
+                                    ImportMode mode, boost::shared_ptr<Track>& existing_track)
 {
+       boost::shared_ptr<AudioRegion> ar = boost::dynamic_pointer_cast<AudioRegion>(region);
+       boost::shared_ptr<MidiRegion> mr = boost::dynamic_pointer_cast<MidiRegion>(region);
+
        switch (mode) {
        case ImportAsRegion:
                /* relax, its been done */
                break;
-               
+
        case ImportToTrack:
        {
                if (!existing_track) {
 
-                       existing_track = get_nth_selected_audio_track (0);
+                       if (ar) {
+                               existing_track = get_nth_selected_audio_track (0);
+                       } else if (mr) {
+                               existing_track = get_nth_selected_midi_track (0);
+                       }
 
                        if (!existing_track) {
                                return -1;
                        }
                }
 
-               boost::shared_ptr<Playlist> playlist = existing_track->diskstream()->playlist();
-               boost::shared_ptr<AudioRegion> copy (boost::dynamic_pointer_cast<AudioRegion> (RegionFactory::create (region)));
-               begin_reversible_command (_("insert sndfile"));
-               XMLNode &before = playlist->get_state();
+               boost::shared_ptr<Playlist> playlist = existing_track->playlist();
+               boost::shared_ptr<Region> copy (RegionFactory::create (region, region->properties()));
+               playlist->clear_changes ();
                playlist->add_region (copy, pos);
-               session->add_command (new MementoCommand<Playlist>(*playlist, &before, &playlist->get_state()));
-               commit_reversible_command ();
+               _session->add_command (new StatefulDiffCommand (playlist));
                break;
        }
 
        case ImportAsTrack:
-       { 
+       {
                if (!existing_track) {
-                       list<boost::shared_ptr<AudioTrack> > at (session->new_audio_track (in_chans, out_chans, Normal, 1));
+                       if (ar) {
+                               list<boost::shared_ptr<AudioTrack> > at (_session->new_audio_track (in_chans, out_chans, Normal, 0, 1));
 
-                       if (at.empty()) {
-                               return -1;
+                               if (at.empty()) {
+                                       return -1;
+                               }
+
+                               existing_track = at.front();
+                       } else if (mr) {
+                               list<boost::shared_ptr<MidiTrack> > mt (_session->new_midi_track (ChanCount (DataType::MIDI, 1),
+                                                                                                 ChanCount (DataType::MIDI, 1),
+                                                                                                 boost::shared_ptr<PluginInfo>(), 
+                                                                                                 Normal, 0, 1));
+
+                               if (mt.empty()) {
+                                       return -1;
+                               }
+
+                               existing_track = mt.front();
                        }
 
-                       existing_track = at.front();
                        existing_track->set_name (region->name());
                }
 
-               boost::shared_ptr<AudioRegion> copy (boost::dynamic_pointer_cast<AudioRegion> (RegionFactory::create (region)));
-               existing_track->diskstream()->playlist()->add_region (copy, pos);
+               boost::shared_ptr<Playlist> playlist = existing_track->playlist();
+               boost::shared_ptr<Region> copy (RegionFactory::create (region, true));
+               playlist->clear_changes ();
+               playlist->add_region (copy, pos);
+               _session->add_command (new StatefulDiffCommand (playlist));
                break;
        }
 
-
        case ImportAsTapeTrack:
        {
-               list<boost::shared_ptr<AudioTrack> > at (session->new_audio_track (in_chans, out_chans, Destructive));
+               if (!ar) {
+                       return -1;
+               }
+
+               list<boost::shared_ptr<AudioTrack> > at (_session->new_audio_track (in_chans, out_chans, Destructive));
                if (!at.empty()) {
-                       boost::shared_ptr<AudioRegion> copy (boost::dynamic_pointer_cast<AudioRegion> (RegionFactory::create (region)));
-                       at.front()->set_name (basename_nosuffix (copy->name()));
-                       at.front()->diskstream()->playlist()->add_region (copy, pos);
+                       boost::shared_ptr<Playlist> playlist = at.front()->playlist();
+                       boost::shared_ptr<Region> copy (RegionFactory::create (region, true));
+                       playlist->clear_changes ();
+                       playlist->add_region (copy, pos);
+                       _session->add_command (new StatefulDiffCommand (playlist));
                }
                break;
        }
@@ -733,7 +915,7 @@ Editor::finish_bringing_in_audio (boost::shared_ptr<AudioRegion> region, uint32_
 void *
 Editor::_import_thread (void *arg)
 {
-       PBD::ThreadCreated (pthread_self(), X_("Import"));
+       SessionEvent::create_per_thread_pool ("import events", 64);
 
        Editor *ed = (Editor *) arg;
        return ed->import_thread ();
@@ -742,30 +924,8 @@ Editor::_import_thread (void *arg)
 void *
 Editor::import_thread ()
 {
-       session->import_audiofiles (import_status);
+       _session->import_files (import_status);
        pthread_exit_pbd (0);
        /*NOTREACHED*/
        return 0;
 }
-
-gint
-Editor::import_progress_timeout (void *arg)
-{
-       interthread_progress_label.set_text (import_status.doing_what);
-
-       if (import_status.freeze) {
-               interthread_cancel_button.set_sensitive(false);
-       } else {
-               interthread_cancel_button.set_sensitive(true);
-       }
-
-       if (import_status.doing_what == "building peak files") {
-               interthread_progress_bar.pulse ();
-               return FALSE;
-       } else {
-               interthread_progress_bar.set_fraction (import_status.progress);
-       }
-
-       return !(import_status.done || import_status.cancel);
-}
-