const correctness.
[ardour.git] / libs / ardour / midi_source.cc
index 133b75893d7567849209ca26b6755b897681401a..36cd36795ab66c7fd5e4d9a39a04bcce2e6fc1fe 100644 (file)
 #include <iomanip>
 #include <algorithm>
 
+#include <glibmm/fileutils.h>
+
 #include "pbd/xml++.h"
 #include "pbd/pthread_utils.h"
 #include "pbd/basename.h"
 
 #include "ardour/audioengine.h"
+#include "ardour/debug.h"
 #include "ardour/midi_model.h"
 #include "ardour/midi_ring_buffer.h"
 #include "ardour/midi_state_tracker.h"
@@ -48,7 +51,7 @@ using namespace std;
 using namespace ARDOUR;
 using namespace PBD;
 
-sigc::signal<void,MidiSource *> MidiSource::MidiSourceCreated;
+PBD::Signal1<void,MidiSource*> MidiSource::MidiSourceCreated;
 
 MidiSource::MidiSource (Session& s, string name, Source::Flag flags)
        : Source(s, DataType::MIDI, name, flags)
@@ -80,6 +83,7 @@ MidiSource::MidiSource (Session& s, const XMLNode& node)
        }
 }
 
+
 MidiSource::~MidiSource ()
 {
 }
@@ -108,10 +112,20 @@ MidiSource::set_state (const XMLNode& node, int /*version*/)
        return 0;
 }
 
-sframes_t
-MidiSource::length (sframes_t pos) const
+bool
+MidiSource::empty () const
+{
+        return _length_beats == 0;
+}
+
+framecnt_t
+MidiSource::length (framepos_t pos) const
 {
-       BeatsFramesConverter converter(_session, pos);
+        if (_length_beats == 0) {
+                return 0;
+        }
+
+       BeatsFramesConverter converter(_session.tempo_map(), pos);
        return converter.to(_length_beats);
 }
 
@@ -128,55 +142,56 @@ MidiSource::invalidate ()
        _model_iter.invalidate();
 }
 
+/** @param filtered A set of parameters whose MIDI messages will not be returned */
 nframes_t
-MidiSource::midi_read (MidiRingBuffer<nframes_t>& dst, sframes_t source_start,
-                      sframes_t start, nframes_t cnt,
-                      sframes_t stamp_offset, sframes_t negative_stamp_offset,
-                      MidiStateTracker* tracker) const
+MidiSource::midi_read (Evoral::EventSink<nframes_t>& dst, sframes_t source_start,
+                       sframes_t start, nframes_t cnt,
+                       sframes_t stamp_offset, sframes_t negative_stamp_offset,
+                       MidiStateTracker* tracker,
+                      std::set<Evoral::Parameter> const & filtered) const
 {
        Glib::Mutex::Lock lm (_lock);
 
-       BeatsFramesConverter converter(_session, source_start);
+       BeatsFramesConverter converter(_session.tempo_map(), source_start);
 
        if (_model) {
-               //cerr << "READ @ " << start << " * " << cnt << " (source @ " << source_start << " {" << endl;
-#define BEATS_TO_FRAMES(t) (converter.to(t) + stamp_offset - negative_stamp_offset)
-
                Evoral::Sequence<double>::const_iterator& i = _model_iter;
 
                // If the cached iterator is invalid, search for the first event past start
                if (_last_read_end == 0 || start != _last_read_end || !_model_iter_valid) {
-                       for (i = _model->begin(); i != _model->end(); ++i) {
-                               if (BEATS_TO_FRAMES(i->time()) >= start) {
+                       DEBUG_TRACE (DEBUG::MidiSourceIO, string_compose ("*** %1 search for relevant iterator for %1 / %2\n", _name, source_start, start));
+                       for (i = _model->begin(0, filtered); i != _model->end(); ++i) {
+                               if (converter.to(i->time()) >= start) {
                                        break;
                                }
                        }
                        _model_iter_valid = true;
+               } else {
+                       DEBUG_TRACE (DEBUG::MidiSourceIO, string_compose ("*** %1 use cached iterator for %1 / %2\n", _name, source_start, start));
                }
 
                _last_read_end = start + cnt;
 
-               // Read events up to source_start + start + cnt
+               // Read events up to end
                for (; i != _model->end(); ++i) {
-                       const sframes_t time_frames = BEATS_TO_FRAMES(i->time());
-                       //cerr << "Read? " << time_frames << " < " << source_start + start + cnt << endl;
-                       if (time_frames < source_start + start + cnt) {
-                               //cerr << "Read @ " << time_frames << endl;
-                               dst.write(time_frames, i->event_type(), i->size(), i->buffer());
+                       const sframes_t time_frames = converter.to(i->time());
+                       if (time_frames < start + cnt) {
+                               dst.write(time_frames + stamp_offset - negative_stamp_offset,
+                                               i->event_type(), i->size(), i->buffer());
                                if (tracker) {
                                        Evoral::MIDIEvent<Evoral::MusicalTime>& ev (*(Evoral::MIDIEvent<Evoral::MusicalTime>*) (&(*i)));
                                        if (ev.is_note_on()) {
+                                               DEBUG_TRACE (DEBUG::MidiSourceIO, string_compose ("\t%1 add note on %2 @ %3\n", _name, ev.note(), time_frames));
                                                tracker->add (ev.note(), ev.channel());
                                        } else if (ev.is_note_off()) {
+                                               DEBUG_TRACE (DEBUG::MidiSourceIO, string_compose ("\t%1 add note off %2 @ %3\n", _name, ev.note(), time_frames));
                                                tracker->remove (ev.note(), ev.channel());
                                        }
                                }
                        } else {
-                               //cerr << "End" << endl;
                                break;
                        }
                }
-               //cerr << "}" << endl;
                return cnt;
        } else {
                return read_unlocked (dst, source_start, start, cnt, stamp_offset, negative_stamp_offset, tracker);
@@ -192,16 +207,6 @@ MidiSource::midi_write (MidiRingBuffer<nframes_t>& source, sframes_t source_star
        return ret;
 }
 
-bool
-MidiSource::file_changed (string path)
-{
-       struct stat stat_file;
-
-       int e1 = stat (path.c_str(), &stat_file);
-
-       return !e1;
-}
-
 void
 MidiSource::mark_streaming_midi_write_started (NoteMode mode, sframes_t start_frame)
 {
@@ -219,14 +224,8 @@ MidiSource::mark_streaming_midi_write_started (NoteMode mode, sframes_t start_fr
 void
 MidiSource::mark_streaming_write_started ()
 {
-       sframes_t start_frame = _session.transport_frame();
-
-       if (_model) {
-               _model->start_write();
-       }
-
-       _last_write_end = start_frame;
-       _writing = true;
+       NoteMode note_mode = _model ? _model->note_mode() : Sustained;
+       mark_streaming_midi_write_started(note_mode, _session.transport_frame());
 }
 
 void
@@ -239,45 +238,77 @@ MidiSource::mark_streaming_write_completed ()
        _writing = false;
 }
 
+boost::shared_ptr<MidiSource>
+MidiSource::clone (Evoral::MusicalTime begin, Evoral::MusicalTime end)
+{
+        string newname = PBD::basename_nosuffix(_name.val());
+        string newpath;
+
+        /* get a new name for the MIDI file we're going to write to
+         */
+
+        do { 
+
+                newname = bump_name_once (newname, '-');
+                /* XXX build path safely */
+                newpath = _session.session_directory().midi_path().to_string() +"/"+ newname + ".mid";
+
+        } while (Glib::file_test (newpath, Glib::FILE_TEST_EXISTS));
+        
+        boost::shared_ptr<MidiSource> newsrc = boost::dynamic_pointer_cast<MidiSource>(
+                SourceFactory::createWritable(DataType::MIDI, _session,
+                                              newpath, false, _session.frame_rate()));
+        
+        newsrc->set_timeline_position(_timeline_position);
+
+        if (_model) {
+                if (begin == Evoral::MinMusicalTime && end == Evoral::MaxMusicalTime) {
+                        _model->write_to (newsrc);
+                } else {
+                        _model->write_section_to (newsrc, begin, end);
+                }
+        } else {
+                error << string_compose (_("programming error: %1"), X_("no model for MidiSource during ::clone()"));
+                return boost::shared_ptr<MidiSource>();
+        }
+
+        newsrc->flush_midi();
+
+        /* force a reload of the model if the range is partial */
+        
+        if (begin != Evoral::MinMusicalTime || end != Evoral::MaxMusicalTime) {
+                newsrc->load_model (true, true);
+        } else {
+               newsrc->set_model (_model);
+       }
+        
+        return newsrc;
+}
+
 void
 MidiSource::session_saved()
 {
-       flush_midi();
-
-       if (_model && _model->edited()) {
-               string newname;
-               const string basename = PBD::basename_nosuffix(_name);
-               string::size_type last_dash = basename.find_last_of("-");
-               if (last_dash == string::npos || last_dash == basename.find_first_of("-")) {
-                       newname = basename + "-1";
-               } else {
-                       stringstream ss(basename.substr(last_dash+1));
-                       unsigned write_count = 0;
-                       ss >> write_count;
-                       // cerr << "WRITE COUNT: " << write_count << endl;
-                       ++write_count; // start at 1
-                       ss.clear();
-                       ss << basename.substr(0, last_dash) << "-" << write_count;
-                       newname = ss.str();
-               }
+        /* this writes a copy of the data to disk. 
+           XXX do we need to do this every time?
+        */
 
-               string newpath = _session.session_directory().midi_path().to_string() +"/"+ newname + ".mid";
-
-               boost::shared_ptr<MidiSource> newsrc = boost::dynamic_pointer_cast<MidiSource>(
-                               SourceFactory::createWritable(DataType::MIDI, _session,
-                                               newpath, true, false, _session.frame_rate()));
+       flush_midi();
+        cerr << name() << " @ " << this << " length at save = " << _length_beats << endl;
 
-               newsrc->set_timeline_position(_timeline_position);
-               _model->write_to(newsrc);
+#if 0 // old style: clone the source if necessary on every session save
+      // and switch to the new source
 
-               // cyclic dependency here, ugly :(
-               newsrc->set_model(_model);
-               _model->set_midi_source(newsrc.get());
+       if (_model && _model->edited()) {
+                cerr << "Model exists and is edited\n";
 
-               newsrc->flush_midi();
+               boost::shared_ptr<MidiSource> newsrc = clone ();
 
-               Switched.emit(newsrc);
+                if (newsrc) {
+                        _model->set_midi_source (newsrc.get());
+                        Switched (newsrc); /* EMIT SIGNAL */
+                }
        }
+#endif
 }
 
 void
@@ -288,3 +319,17 @@ MidiSource::set_note_mode(NoteMode mode)
        }
 }
 
+void
+MidiSource::drop_model ()
+{
+        cerr << name() << " drop model\n";
+        _model.reset(); 
+       ModelChanged (); /* EMIT SIGNAL */
+}
+
+void
+MidiSource::set_model (boost::shared_ptr<MidiModel> m)
+{
+       _model = m;
+       ModelChanged (); /* EMIT SIGNAL */
+}