globally change all use of "frame" to refer to audio into "sample".
[ardour.git] / gtk2_ardour / editor_ops.cc
index b0eba11cd9ca82c7a11706d989377b0eb7bd8aec..4bd853002c953aba970a253b4fd4f1afe391e0ff 100644 (file)
@@ -173,7 +173,7 @@ Editor::redo (uint32_t n)
 }
 
 void
-Editor::split_regions_at (MusicFrame where, RegionSelection& regions, bool snap_frame)
+Editor::split_regions_at (MusicSample where, RegionSelection& regions, bool snap_sample)
 {
        bool frozen = false;
 
@@ -199,12 +199,12 @@ Editor::split_regions_at (MusicFrame where, RegionSelection& regions, bool snap_
                case SnapToRegionEnd:
                        break;
                default:
-                       if (snap_frame) {
+                       if (snap_sample) {
                                snap_to (where);
                        }
                }
        } else {
-               if (snap_frame) {
+               if (snap_sample) {
                        snap_to (where);
                }
 
@@ -220,7 +220,7 @@ Editor::split_regions_at (MusicFrame where, RegionSelection& regions, bool snap_
                   have something to split.
                */
 
-               if (!(*a)->region()->covers (where.frame)) {
+               if (!(*a)->region()->covers (where.sample)) {
                        ++a;
                        continue;
                }
@@ -298,7 +298,7 @@ Editor::split_regions_at (MusicFrame where, RegionSelection& regions, bool snap_
                }
 
                for (RegionSelection::iterator ri = latest_regionviews.begin(); ri != latest_regionviews.end(); ri++) {
-                       if ((*ri)->region()->position() < where.frame) {
+                       if ((*ri)->region()->position() < where.sample) {
                                // new regions created before the split
                                if (rsas & NewlyCreatedLeft) {
                                        selection->add (*ri);
@@ -330,15 +330,15 @@ Editor::split_regions_at (MusicFrame where, RegionSelection& regions, bool snap_
 void
 Editor::move_range_selection_start_or_end_to_region_boundary (bool move_end, bool next)
 {
-       if (selection->time.start() == selection->time.end_frame()) {
+       if (selection->time.start() == selection->time.end_sample()) {
                return;
        }
 
-       framepos_t start = selection->time.start ();
-       framepos_t end = selection->time.end_frame ();
+       samplepos_t start = selection->time.start ();
+       samplepos_t end = selection->time.end_sample ();
 
        /* the position of the thing we may move */
-       framepos_t pos = move_end ? end : start;
+       samplepos_t pos = move_end ? end : start;
        int dir = next ? 1 : -1;
 
        /* so we don't find the current region again */
@@ -346,7 +346,7 @@ Editor::move_range_selection_start_or_end_to_region_boundary (bool move_end, boo
                pos += dir;
        }
 
-       framepos_t const target = get_region_boundary (pos, dir, true, false);
+       samplepos_t const target = get_region_boundary (pos, dir, true, false);
        if (target < 0) {
                return;
        }
@@ -392,8 +392,8 @@ Editor::nudge_backward_release (GdkEventButton* ev)
 void
 Editor::nudge_forward (bool next, bool force_playhead)
 {
-       framepos_t distance;
-       framepos_t next_distance;
+       samplepos_t distance;
+       samplepos_t next_distance;
 
        if (!_session) {
                return;
@@ -441,20 +441,20 @@ Editor::nudge_forward (bool next, bool force_playhead)
                                        if (next) {
                                                distance = next_distance;
                                        }
-                                       if (max_framepos - distance > loc->start() + loc->length()) {
+                                       if (max_samplepos - distance > loc->start() + loc->length()) {
                                                loc->set_start (loc->start() + distance, false, true, divisions);
                                        } else {
-                                               loc->set_start (max_framepos - loc->length(), false, true, divisions);
+                                               loc->set_start (max_samplepos - loc->length(), false, true, divisions);
                                        }
                                } else {
                                        distance = get_nudge_distance (loc->end(), next_distance);
                                        if (next) {
                                                distance = next_distance;
                                        }
-                                       if (max_framepos - distance > loc->end()) {
+                                       if (max_samplepos - distance > loc->end()) {
                                                loc->set_end (loc->end() + distance, false, true, divisions);
                                        } else {
-                                               loc->set_end (max_framepos, false, true, divisions);
+                                               loc->set_end (max_samplepos, false, true, divisions);
                                        }
                                        if (loc->is_session_range()) {
                                                _session->set_end_is_free (false);
@@ -473,16 +473,16 @@ Editor::nudge_forward (bool next, bool force_playhead)
                        commit_reversible_command ();
                }
        } else {
-               distance = get_nudge_distance (playhead_cursor->current_frame (), next_distance);
-               _session->request_locate (playhead_cursor->current_frame () + distance);
+               distance = get_nudge_distance (playhead_cursor->current_sample (), next_distance);
+               _session->request_locate (playhead_cursor->current_sample () + distance);
        }
 }
 
 void
 Editor::nudge_backward (bool next, bool force_playhead)
 {
-       framepos_t distance;
-       framepos_t next_distance;
+       samplepos_t distance;
+       samplepos_t next_distance;
 
        if (!_session) {
                return;
@@ -568,10 +568,10 @@ Editor::nudge_backward (bool next, bool force_playhead)
 
        } else {
 
-               distance = get_nudge_distance (playhead_cursor->current_frame (), next_distance);
+               distance = get_nudge_distance (playhead_cursor->current_sample (), next_distance);
 
-               if (playhead_cursor->current_frame () > distance) {
-                       _session->request_locate (playhead_cursor->current_frame () - distance);
+               if (playhead_cursor->current_sample () > distance) {
+                       _session->request_locate (playhead_cursor->current_sample () - distance);
                } else {
                        _session->goto_start();
                }
@@ -589,7 +589,7 @@ Editor::nudge_forward_capture_offset ()
 
        begin_reversible_command (_("nudge forward"));
 
-       framepos_t const distance = _session->worst_output_latency();
+       samplepos_t const distance = _session->worst_output_latency();
 
        for (RegionSelection::iterator i = rs.begin(); i != rs.end(); ++i) {
                boost::shared_ptr<Region> r ((*i)->region());
@@ -613,7 +613,7 @@ Editor::nudge_backward_capture_offset ()
 
        begin_reversible_command (_("nudge backward"));
 
-       framepos_t const distance = _session->worst_output_latency();
+       samplepos_t const distance = _session->worst_output_latency();
 
        for (RegionSelection::iterator i = rs.begin(); i != rs.end(); ++i) {
                boost::shared_ptr<Region> r ((*i)->region());
@@ -640,8 +640,8 @@ struct RegionSelectionPositionSorter {
 void
 Editor::sequence_regions ()
 {
-       framepos_t r_end;
-       framepos_t r_end_prev;
+       samplepos_t r_end;
+       samplepos_t r_end_prev;
 
        int iCount=0;
 
@@ -705,13 +705,13 @@ void
 Editor::move_to_end ()
 {
 
-       _session->request_locate (_session->current_end_frame());
+       _session->request_locate (_session->current_end_sample());
 }
 
 void
 Editor::build_region_boundary_cache ()
 {
-       framepos_t pos = 0;
+       samplepos_t pos = 0;
        vector<RegionPoint> interesting_points;
        boost::shared_ptr<Region> r;
        TrackViewList tracks;
@@ -723,12 +723,12 @@ Editor::build_region_boundary_cache ()
                return;
        }
 
-       bool maybe_first_frame = false;
+       bool maybe_first_sample = false;
 
        switch (_snap_type) {
        case SnapToRegionStart:
                interesting_points.push_back (Start);
-               maybe_first_frame = true;
+               maybe_first_sample = true;
                break;
        case SnapToRegionEnd:
                interesting_points.push_back (End);
@@ -739,7 +739,7 @@ Editor::build_region_boundary_cache ()
        case SnapToRegionBoundary:
                interesting_points.push_back (Start);
                interesting_points.push_back (End);
-               maybe_first_frame = true;
+               maybe_first_sample = true;
                break;
        default:
                fatal << string_compose (_("build_region_boundary_cache called with snap_type = %1"), _snap_type) << endmsg;
@@ -756,7 +756,7 @@ Editor::build_region_boundary_cache ()
                tlist = track_views.filter_to_unique_playlists ();
        }
 
-       if (maybe_first_frame) {
+       if (maybe_first_sample) {
                TrackViewList::const_iterator i;
                for (i = tlist.begin(); i != tlist.end(); ++i) {
                        boost::shared_ptr<Playlist> pl = (*i)->playlist();
@@ -767,10 +767,10 @@ Editor::build_region_boundary_cache ()
                }
        }
 
-       while (pos < _session->current_end_frame() && !at_end) {
+       while (pos < _session->current_end_sample() && !at_end) {
 
-               framepos_t rpos;
-               framepos_t lpos = max_framepos;
+               samplepos_t rpos;
+               samplepos_t lpos = max_samplepos;
 
                for (vector<RegionPoint>::iterator p = interesting_points.begin(); p != interesting_points.end(); ++p) {
 
@@ -784,11 +784,11 @@ Editor::build_region_boundary_cache ()
 
                        switch (*p) {
                        case Start:
-                               rpos = r->first_frame();
+                               rpos = r->first_sample();
                                break;
 
                        case End:
-                               rpos = r->last_frame();
+                               rpos = r->last_sample();
                                break;
 
                        case SyncPoint:
@@ -807,7 +807,7 @@ Editor::build_region_boundary_cache ()
                           to sort later.
                        */
 
-                       vector<framepos_t>::iterator ri;
+                       vector<samplepos_t>::iterator ri;
 
                        for (ri = region_boundary_cache.begin(); ri != region_boundary_cache.end(); ++ri) {
                                if (*ri == rpos) {
@@ -829,34 +829,34 @@ Editor::build_region_boundary_cache ()
 }
 
 boost::shared_ptr<Region>
-Editor::find_next_region (framepos_t frame, RegionPoint point, int32_t dir, TrackViewList& tracks, TimeAxisView **ontrack)
+Editor::find_next_region (samplepos_t sample, RegionPoint point, int32_t dir, TrackViewList& tracks, TimeAxisView **ontrack)
 {
        TrackViewList::iterator i;
-       framepos_t closest = max_framepos;
+       samplepos_t closest = max_samplepos;
        boost::shared_ptr<Region> ret;
-       framepos_t rpos = 0;
+       samplepos_t rpos = 0;
 
-       framepos_t track_frame;
+       samplepos_t track_sample;
        RouteTimeAxisView *rtav;
 
        for (i = tracks.begin(); i != tracks.end(); ++i) {
 
-               framecnt_t distance;
+               samplecnt_t distance;
                boost::shared_ptr<Region> r;
 
-               track_frame = frame;
+               track_sample = sample;
 
-               if ((r = (*i)->find_next_region (track_frame, point, dir)) == 0) {
+               if ((r = (*i)->find_next_region (track_sample, point, dir)) == 0) {
                        continue;
                }
 
                switch (point) {
                case Start:
-                       rpos = r->first_frame ();
+                       rpos = r->first_sample ();
                        break;
 
                case End:
-                       rpos = r->last_frame ();
+                       rpos = r->last_sample ();
                        break;
 
                case SyncPoint:
@@ -864,10 +864,10 @@ Editor::find_next_region (framepos_t frame, RegionPoint point, int32_t dir, Trac
                        break;
                }
 
-               if (rpos > frame) {
-                       distance = rpos - frame;
+               if (rpos > sample) {
+                       distance = rpos - sample;
                } else {
-                       distance = frame - rpos;
+                       distance = sample - rpos;
                }
 
                if (distance < closest) {
@@ -881,15 +881,15 @@ Editor::find_next_region (framepos_t frame, RegionPoint point, int32_t dir, Trac
        return ret;
 }
 
-framepos_t
-Editor::find_next_region_boundary (framepos_t pos, int32_t dir, const TrackViewList& tracks)
+samplepos_t
+Editor::find_next_region_boundary (samplepos_t pos, int32_t dir, const TrackViewList& tracks)
 {
-       framecnt_t distance = max_framepos;
-       framepos_t current_nearest = -1;
+       samplecnt_t distance = max_samplepos;
+       samplepos_t current_nearest = -1;
 
        for (TrackViewList::const_iterator i = tracks.begin(); i != tracks.end(); ++i) {
-               framepos_t contender;
-               framecnt_t d;
+               samplepos_t contender;
+               samplecnt_t d;
 
                RouteTimeAxisView* rtv = dynamic_cast<RouteTimeAxisView*> (*i);
 
@@ -912,10 +912,10 @@ Editor::find_next_region_boundary (framepos_t pos, int32_t dir, const TrackViewL
        return current_nearest;
 }
 
-framepos_t
-Editor::get_region_boundary (framepos_t pos, int32_t dir, bool with_selection, bool only_onscreen)
+samplepos_t
+Editor::get_region_boundary (samplepos_t pos, int32_t dir, bool with_selection, bool only_onscreen)
 {
-       framepos_t target;
+       samplepos_t target;
        TrackViewList tvl;
 
        if (with_selection && Config->get_region_boundaries_from_selected_tracks()) {
@@ -950,8 +950,8 @@ Editor::get_region_boundary (framepos_t pos, int32_t dir, bool with_selection, b
 void
 Editor::cursor_to_region_boundary (bool with_selection, int32_t dir)
 {
-       framepos_t pos = playhead_cursor->current_frame ();
-       framepos_t target;
+       samplepos_t pos = playhead_cursor->current_sample ();
+       samplepos_t target;
 
        if (!_session) {
                return;
@@ -985,7 +985,7 @@ void
 Editor::cursor_to_region_point (EditorCursor* cursor, RegionPoint point, int32_t dir)
 {
        boost::shared_ptr<Region> r;
-       framepos_t pos = cursor->current_frame ();
+       samplepos_t pos = cursor->current_sample ();
 
        if (!_session) {
                return;
@@ -1019,11 +1019,11 @@ Editor::cursor_to_region_point (EditorCursor* cursor, RegionPoint point, int32_t
 
        switch (point) {
        case Start:
-               pos = r->first_frame ();
+               pos = r->first_sample ();
                break;
 
        case End:
-               pos = r->last_frame ();
+               pos = r->last_sample ();
                break;
 
        case SyncPoint:
@@ -1053,7 +1053,7 @@ Editor::cursor_to_previous_region_point (EditorCursor* cursor, RegionPoint point
 void
 Editor::cursor_to_selection_start (EditorCursor *cursor)
 {
-       framepos_t pos = 0;
+       samplepos_t pos = 0;
 
        switch (mouse_mode) {
        case MouseObject:
@@ -1082,18 +1082,18 @@ Editor::cursor_to_selection_start (EditorCursor *cursor)
 void
 Editor::cursor_to_selection_end (EditorCursor *cursor)
 {
-       framepos_t pos = 0;
+       samplepos_t pos = 0;
 
        switch (mouse_mode) {
        case MouseObject:
                if (!selection->regions.empty()) {
-                       pos = selection->regions.end_frame();
+                       pos = selection->regions.end_sample();
                }
                break;
 
        case MouseRange:
                if (!selection->time.empty()) {
-                       pos = selection->time.end_frame ();
+                       pos = selection->time.end_sample ();
                }
                break;
 
@@ -1111,7 +1111,7 @@ Editor::cursor_to_selection_end (EditorCursor *cursor)
 void
 Editor::selected_marker_to_region_boundary (bool with_selection, int32_t dir)
 {
-       framepos_t target;
+       samplepos_t target;
        Location* loc;
        bool ignored;
 
@@ -1120,10 +1120,10 @@ Editor::selected_marker_to_region_boundary (bool with_selection, int32_t dir)
        }
 
        if (selection->markers.empty()) {
-               framepos_t mouse;
+               samplepos_t mouse;
                bool ignored;
 
-               if (!mouse_frame (mouse, ignored)) {
+               if (!mouse_sample (mouse, ignored)) {
                        return;
                }
 
@@ -1134,7 +1134,7 @@ Editor::selected_marker_to_region_boundary (bool with_selection, int32_t dir)
                return;
        }
 
-       framepos_t pos = loc->start();
+       samplepos_t pos = loc->start();
 
        // so we don't find the current region again..
        if (dir > 0 || pos > 0) {
@@ -1164,7 +1164,7 @@ void
 Editor::selected_marker_to_region_point (RegionPoint point, int32_t dir)
 {
        boost::shared_ptr<Region> r;
-       framepos_t pos;
+       samplepos_t pos;
        Location* loc;
        bool ignored;
 
@@ -1199,15 +1199,15 @@ Editor::selected_marker_to_region_point (RegionPoint point, int32_t dir)
 
        switch (point) {
        case Start:
-               pos = r->first_frame ();
+               pos = r->first_sample ();
                break;
 
        case End:
-               pos = r->last_frame ();
+               pos = r->last_sample ();
                break;
 
        case SyncPoint:
-               pos = r->adjust_to_sync (r->first_frame());
+               pos = r->adjust_to_sync (r->first_sample());
                break;
        }
 
@@ -1229,7 +1229,7 @@ Editor::selected_marker_to_previous_region_point (RegionPoint point)
 void
 Editor::selected_marker_to_selection_start ()
 {
-       framepos_t pos = 0;
+       samplepos_t pos = 0;
        Location* loc;
        bool ignored;
 
@@ -1264,7 +1264,7 @@ Editor::selected_marker_to_selection_start ()
 void
 Editor::selected_marker_to_selection_end ()
 {
-       framepos_t pos = 0;
+       samplepos_t pos = 0;
        Location* loc;
        bool ignored;
 
@@ -1279,13 +1279,13 @@ Editor::selected_marker_to_selection_end ()
        switch (mouse_mode) {
        case MouseObject:
                if (!selection->regions.empty()) {
-                       pos = selection->regions.end_frame();
+                       pos = selection->regions.end_sample();
                }
                break;
 
        case MouseRange:
                if (!selection->time.empty()) {
-                       pos = selection->time.end_frame ();
+                       pos = selection->time.end_sample ();
                }
                break;
 
@@ -1299,18 +1299,18 @@ Editor::selected_marker_to_selection_end ()
 void
 Editor::scroll_playhead (bool forward)
 {
-       framepos_t pos = playhead_cursor->current_frame ();
-       framecnt_t delta = (framecnt_t) floor (current_page_samples() / 0.8);
+       samplepos_t pos = playhead_cursor->current_sample ();
+       samplecnt_t delta = (samplecnt_t) floor (current_page_samples() / 0.8);
 
        if (forward) {
-               if (pos == max_framepos) {
+               if (pos == max_samplepos) {
                        return;
                }
 
-               if (pos < max_framepos - delta) {
+               if (pos < max_samplepos - delta) {
                        pos += delta ;
                } else {
-                       pos = max_framepos;
+                       pos = max_samplepos;
                }
 
        } else {
@@ -1354,10 +1354,10 @@ Editor::cursor_align (bool playhead_to_edit)
                        Location* loc = find_location_from_marker (*i, ignored);
 
                        if (loc->is_mark()) {
-                               loc->set_start (playhead_cursor->current_frame (), false, true, divisions);
+                               loc->set_start (playhead_cursor->current_sample (), false, true, divisions);
                        } else {
-                               loc->set (playhead_cursor->current_frame (),
-                                         playhead_cursor->current_frame () + loc->length(), true, divisions);
+                               loc->set (playhead_cursor->current_sample (),
+                                         playhead_cursor->current_sample () + loc->length(), true, divisions);
                        }
                }
        }
@@ -1366,33 +1366,33 @@ Editor::cursor_align (bool playhead_to_edit)
 void
 Editor::scroll_backward (float pages)
 {
-       framepos_t const one_page = (framepos_t) rint (_visible_canvas_width * samples_per_pixel);
-       framepos_t const cnt = (framepos_t) floor (pages * one_page);
+       samplepos_t const one_page = (samplepos_t) rint (_visible_canvas_width * samples_per_pixel);
+       samplepos_t const cnt = (samplepos_t) floor (pages * one_page);
 
-       framepos_t frame;
-       if (leftmost_frame < cnt) {
-               frame = 0;
+       samplepos_t sample;
+       if (_leftmost_sample < cnt) {
+               sample = 0;
        } else {
-               frame = leftmost_frame - cnt;
+               sample = _leftmost_sample - cnt;
        }
 
-       reset_x_origin (frame);
+       reset_x_origin (sample);
 }
 
 void
 Editor::scroll_forward (float pages)
 {
-       framepos_t const one_page = (framepos_t) rint (_visible_canvas_width * samples_per_pixel);
-       framepos_t const cnt = (framepos_t) floor (pages * one_page);
+       samplepos_t const one_page = (samplepos_t) rint (_visible_canvas_width * samples_per_pixel);
+       samplepos_t const cnt = (samplepos_t) floor (pages * one_page);
 
-       framepos_t frame;
-       if (max_framepos - cnt < leftmost_frame) {
-               frame = max_framepos - cnt;
+       samplepos_t sample;
+       if (max_samplepos - cnt < _leftmost_sample) {
+               sample = max_samplepos - cnt;
        } else {
-               frame = leftmost_frame + cnt;
+               sample = _leftmost_sample + cnt;
        }
 
-       reset_x_origin (frame);
+       reset_x_origin (sample);
 }
 
 void
@@ -1611,10 +1611,10 @@ Editor::scroll_up_one_track (bool skip_child_views)
 void
 Editor::scroll_left_step ()
 {
-       framepos_t xdelta = (current_page_samples() / 8);
+       samplepos_t xdelta = (current_page_samples() / 8);
 
-       if (leftmost_frame > xdelta) {
-               reset_x_origin (leftmost_frame - xdelta);
+       if (_leftmost_sample > xdelta) {
+               reset_x_origin (_leftmost_sample - xdelta);
        } else {
                reset_x_origin (0);
        }
@@ -1624,21 +1624,21 @@ Editor::scroll_left_step ()
 void
 Editor::scroll_right_step ()
 {
-       framepos_t xdelta = (current_page_samples() / 8);
+       samplepos_t xdelta = (current_page_samples() / 8);
 
-       if (max_framepos - xdelta > leftmost_frame) {
-               reset_x_origin (leftmost_frame + xdelta);
+       if (max_samplepos - xdelta > _leftmost_sample) {
+               reset_x_origin (_leftmost_sample + xdelta);
        } else {
-               reset_x_origin (max_framepos - current_page_samples());
+               reset_x_origin (max_samplepos - current_page_samples());
        }
 }
 
 void
 Editor::scroll_left_half_page ()
 {
-       framepos_t xdelta = (current_page_samples() / 2);
-       if (leftmost_frame > xdelta) {
-               reset_x_origin (leftmost_frame - xdelta);
+       samplepos_t xdelta = (current_page_samples() / 2);
+       if (_leftmost_sample > xdelta) {
+               reset_x_origin (_leftmost_sample - xdelta);
        } else {
                reset_x_origin (0);
        }
@@ -1647,11 +1647,11 @@ Editor::scroll_left_half_page ()
 void
 Editor::scroll_right_half_page ()
 {
-       framepos_t xdelta = (current_page_samples() / 2);
-       if (max_framepos - xdelta > leftmost_frame) {
-               reset_x_origin (leftmost_frame + xdelta);
+       samplepos_t xdelta = (current_page_samples() / 2);
+       if (max_samplepos - xdelta > _leftmost_sample) {
+               reset_x_origin (_leftmost_sample + xdelta);
        } else {
-               reset_x_origin (max_framepos - current_page_samples());
+               reset_x_origin (max_samplepos - current_page_samples());
        }
 }
 
@@ -1732,7 +1732,7 @@ Editor::temporal_zoom_step_scale (bool zoom_out, double scale)
 {
        ENSURE_GUI_THREAD (*this, &Editor::temporal_zoom_step, zoom_out, scale)
 
-       framecnt_t nspp = samples_per_pixel;
+       samplecnt_t nspp = samples_per_pixel;
 
        if (zoom_out) {
                nspp *= scale;
@@ -1748,8 +1748,8 @@ Editor::temporal_zoom_step_scale (bool zoom_out, double scale)
 
        //zoom-behavior-tweaks
        //limit our maximum zoom to the session gui extents value
-       std::pair<framepos_t, framepos_t> ext = session_gui_extents();
-       framecnt_t session_extents_pp = ( ext.second - ext.first )  / _visible_canvas_width;
+       std::pair<samplepos_t, samplepos_t> ext = session_gui_extents();
+       samplecnt_t session_extents_pp = ( ext.second - ext.first )  / _visible_canvas_width;
        if (nspp > session_extents_pp)
                nspp = session_extents_pp;
 
@@ -1757,23 +1757,23 @@ Editor::temporal_zoom_step_scale (bool zoom_out, double scale)
 }
 
 void
-Editor::temporal_zoom (framecnt_t fpp)
+Editor::temporal_zoom (samplecnt_t fpp)
 {
        if (!_session) {
                return;
        }
 
-       framepos_t current_page = current_page_samples();
-       framepos_t current_leftmost = leftmost_frame;
-       framepos_t current_rightmost;
-       framepos_t current_center;
-       framepos_t new_page_size;
-       framepos_t half_page_size;
-       framepos_t leftmost_after_zoom = 0;
-       framepos_t where;
+       samplepos_t current_page = current_page_samples();
+       samplepos_t current_leftmost = _leftmost_sample;
+       samplepos_t current_rightmost;
+       samplepos_t current_center;
+       samplepos_t new_page_size;
+       samplepos_t half_page_size;
+       samplepos_t leftmost_after_zoom = 0;
+       samplepos_t where;
        bool in_track_canvas;
-       bool use_mouse_frame = true;
-       framecnt_t nfpp;
+       bool use_mouse_sample = true;
+       samplecnt_t nfpp;
        double l;
 
        if (fpp == samples_per_pixel) {
@@ -1788,10 +1788,10 @@ Editor::temporal_zoom (framecnt_t fpp)
        // all of which is used for the editor track displays. The whole day
        // would be 4147200000 samples, so 2592000 samples per pixel.
 
-       nfpp = min (fpp, (framecnt_t) 2592000);
-       nfpp = max ((framecnt_t) 1, nfpp);
+       nfpp = min (fpp, (samplecnt_t) 2592000);
+       nfpp = max ((samplecnt_t) 1, nfpp);
 
-       new_page_size = (framepos_t) floor (_visible_canvas_width * nfpp);
+       new_page_size = (samplepos_t) floor (_visible_canvas_width * nfpp);
        half_page_size = new_page_size / 2;
 
        switch (zoom_focus) {
@@ -1800,7 +1800,7 @@ Editor::temporal_zoom (framecnt_t fpp)
                break;
 
        case ZoomFocusRight:
-               current_rightmost = leftmost_frame + current_page;
+               current_rightmost = _leftmost_sample + current_page;
                if (current_rightmost < new_page_size) {
                        leftmost_after_zoom = 0;
                } else {
@@ -1819,14 +1819,14 @@ Editor::temporal_zoom (framecnt_t fpp)
 
        case ZoomFocusPlayhead:
                /* centre playhead */
-               l = playhead_cursor->current_frame () - (new_page_size * 0.5);
+               l = playhead_cursor->current_sample () - (new_page_size * 0.5);
 
                if (l < 0) {
                        leftmost_after_zoom = 0;
-               } else if (l > max_framepos) {
-                       leftmost_after_zoom = max_framepos - new_page_size;
+               } else if (l > max_samplepos) {
+                       leftmost_after_zoom = max_samplepos - new_page_size;
                } else {
-                       leftmost_after_zoom = (framepos_t) l;
+                       leftmost_after_zoom = (samplepos_t) l;
                }
                break;
 
@@ -1834,24 +1834,24 @@ Editor::temporal_zoom (framecnt_t fpp)
                /* try to keep the mouse over the same point in the display */
 
                if (_drags->active()) {
-                       where = _drags->current_pointer_frame ();
-               } else if (!mouse_frame (where, in_track_canvas)) {
-                       use_mouse_frame = false;
+                       where = _drags->current_pointer_sample ();
+               } else if (!mouse_sample (where, in_track_canvas)) {
+                       use_mouse_sample = false;
                }
 
-               if (use_mouse_frame) {
+               if (use_mouse_sample) {
                        l = - ((new_page_size * ((where - current_leftmost)/(double)current_page)) - where);
 
                        if (l < 0) {
                                leftmost_after_zoom = 0;
-                       } else if (l > max_framepos) {
-                               leftmost_after_zoom = max_framepos - new_page_size;
+                       } else if (l > max_samplepos) {
+                               leftmost_after_zoom = max_samplepos - new_page_size;
                        } else {
-                               leftmost_after_zoom = (framepos_t) l;
+                               leftmost_after_zoom = (samplepos_t) l;
                        }
                } else {
                        /* use playhead instead */
-                       where = playhead_cursor->current_frame ();
+                       where = playhead_cursor->current_sample ();
 
                        if (where < half_page_size) {
                                leftmost_after_zoom = 0;
@@ -1871,10 +1871,10 @@ Editor::temporal_zoom (framecnt_t fpp)
 
                        if (l < 0) {
                                leftmost_after_zoom = 0;
-                       } else if (l > max_framepos) {
-                               leftmost_after_zoom = max_framepos - new_page_size;
+                       } else if (l > max_samplepos) {
+                               leftmost_after_zoom = max_samplepos - new_page_size;
                        } else {
-                               leftmost_after_zoom = (framepos_t) l;
+                               leftmost_after_zoom = (samplepos_t) l;
                        }
 
                } else {
@@ -1885,13 +1885,13 @@ Editor::temporal_zoom (framecnt_t fpp)
 
        }
 
-       // leftmost_after_zoom = min (leftmost_after_zoom, _session->current_end_frame());
+       // leftmost_after_zoom = min (leftmost_after_zoom, _session->current_end_sample());
 
        reposition_and_zoom (leftmost_after_zoom, nfpp);
 }
 
 void
-Editor::calc_extra_zoom_edges(framepos_t &start, framepos_t &end)
+Editor::calc_extra_zoom_edges(samplepos_t &start, samplepos_t &end)
 {
        /* this func helps make sure we leave a little space
           at each end of the editor so that the zoom doesn't fit the region
@@ -1904,9 +1904,9 @@ Editor::calc_extra_zoom_edges(framepos_t &start, framepos_t &end)
        const double pix_per_mm = (double) pixwidth/ (double) mmwidth;
        const double one_centimeter_in_pixels = pix_per_mm * 10.0;
 
-       const framepos_t range = end - start;
-       const framecnt_t new_fpp = (framecnt_t) ceil ((double) range / (double) _visible_canvas_width);
-       const framepos_t extra_samples = (framepos_t) floor (one_centimeter_in_pixels * new_fpp);
+       const samplepos_t range = end - start;
+       const samplecnt_t new_fpp = (samplecnt_t) ceil ((double) range / (double) _visible_canvas_width);
+       const samplepos_t extra_samples = (samplepos_t) floor (one_centimeter_in_pixels * new_fpp);
 
        if (start > extra_samples) {
                start -= extra_samples;
@@ -1914,17 +1914,17 @@ Editor::calc_extra_zoom_edges(framepos_t &start, framepos_t &end)
                start = 0;
        }
 
-       if (max_framepos - extra_samples > end) {
+       if (max_samplepos - extra_samples > end) {
                end += extra_samples;
        } else {
-               end = max_framepos;
+               end = max_samplepos;
        }
 }
 
 bool
-Editor::get_selection_extents (framepos_t &start, framepos_t &end) const
+Editor::get_selection_extents (samplepos_t &start, samplepos_t &end) const
 {
-       start = max_framepos;
+       start = max_samplepos;
        end = 0;
        bool ret = true;
 
@@ -1941,14 +1941,14 @@ Editor::get_selection_extents (framepos_t &start, framepos_t &end) const
                                start = (*i)->region()->position();
                        }
 
-                       if ((*i)->region()->last_frame() + 1 > end) {
-                               end = (*i)->region()->last_frame() + 1;
+                       if ((*i)->region()->last_sample() + 1 > end) {
+                               end = (*i)->region()->last_sample() + 1;
                        }
                }
 
        } else if (!selection->time.empty()) {
                start = selection->time.start();
-               end = selection->time.end_frame();
+               end = selection->time.end_sample();
        } else
                ret = false;  //no selection found
 
@@ -1972,10 +1972,10 @@ Editor::temporal_zoom_selection (Editing::ZoomAxis axes)
 
        if (axes == Horizontal || axes == Both) {
 
-               framepos_t start, end;
+               samplepos_t start, end;
                if (get_selection_extents (start, end)) {
                        calc_extra_zoom_edges (start, end);
-                       temporal_zoom_by_frame (start, end);
+                       temporal_zoom_by_sample (start, end);
                }
        }
 
@@ -1990,18 +1990,18 @@ Editor::temporal_zoom_session ()
        ENSURE_GUI_THREAD (*this, &Editor::temporal_zoom_session)
 
        if (_session) {
-               framecnt_t start = _session->current_start_frame();
-               framecnt_t end = _session->current_end_frame();
+               samplecnt_t start = _session->current_start_sample();
+               samplecnt_t end = _session->current_end_sample();
 
                if (_session->actively_recording () ) {
-                       framepos_t cur = playhead_cursor->current_frame ();
+                       samplepos_t cur = playhead_cursor->current_sample ();
                        if (cur > end) {
                                /* recording beyond the end marker; zoom out
                                 * by 5 seconds more so that if 'follow
                                 * playhead' is active we don't immediately
                                 * scroll.
                                 */
-                               end = cur + _session->frame_rate() * 5;
+                               end = cur + _session->sample_rate() * 5;
                        }
                }
 
@@ -2011,7 +2011,7 @@ Editor::temporal_zoom_session ()
 
                calc_extra_zoom_edges(start, end);
 
-               temporal_zoom_by_frame (start, end);
+               temporal_zoom_by_sample (start, end);
        }
 }
 
@@ -2021,20 +2021,20 @@ Editor::temporal_zoom_extents ()
        ENSURE_GUI_THREAD (*this, &Editor::temporal_zoom_extents)
 
        if (_session) {
-               std::pair<framepos_t, framepos_t> ext = session_gui_extents( false );  //in this case we want to zoom to the extents explicitly; ignore the users prefs for extra padding
+               std::pair<samplepos_t, samplepos_t> ext = session_gui_extents( false );  //in this case we want to zoom to the extents explicitly; ignore the users prefs for extra padding
 
-               framecnt_t start = ext.first;
-               framecnt_t end = ext.second;
+               samplecnt_t start = ext.first;
+               samplecnt_t end = ext.second;
 
                if (_session->actively_recording () ) {
-                       framepos_t cur = playhead_cursor->current_frame ();
+                       samplepos_t cur = playhead_cursor->current_sample ();
                        if (cur > end) {
                                /* recording beyond the end marker; zoom out
                                 * by 5 seconds more so that if 'follow
                                 * playhead' is active we don't immediately
                                 * scroll.
                                 */
-                               end = cur + _session->frame_rate() * 5;
+                               end = cur + _session->sample_rate() * 5;
                        }
                }
 
@@ -2044,12 +2044,12 @@ Editor::temporal_zoom_extents ()
 
                calc_extra_zoom_edges(start, end);
 
-               temporal_zoom_by_frame (start, end);
+               temporal_zoom_by_sample (start, end);
        }
 }
 
 void
-Editor::temporal_zoom_by_frame (framepos_t start, framepos_t end)
+Editor::temporal_zoom_by_sample (samplepos_t start, samplepos_t end)
 {
        if (!_session) return;
 
@@ -2057,13 +2057,13 @@ Editor::temporal_zoom_by_frame (framepos_t start, framepos_t end)
                return;
        }
 
-       framepos_t range = end - start;
+       samplepos_t range = end - start;
 
-       const framecnt_t new_fpp = (framecnt_t) ceil ((double) range / (double) _visible_canvas_width);
+       const samplecnt_t new_fpp = (samplecnt_t) ceil ((double) range / (double) _visible_canvas_width);
 
-       framepos_t new_page = range;
-       framepos_t middle = (framepos_t) floor ((double) start + ((double) range / 2.0f));
-       framepos_t new_leftmost = (framepos_t) floor ((double) middle - ((double) new_page / 2.0f));
+       samplepos_t new_page = range;
+       samplepos_t middle = (samplepos_t) floor ((double) start + ((double) range / 2.0f));
+       samplepos_t new_leftmost = (samplepos_t) floor ((double) middle - ((double) new_page / 2.0f));
 
        if (new_leftmost > middle) {
                new_leftmost = 0;
@@ -2077,14 +2077,14 @@ Editor::temporal_zoom_by_frame (framepos_t start, framepos_t end)
 }
 
 void
-Editor::temporal_zoom_to_frame (bool coarser, framepos_t frame)
+Editor::temporal_zoom_to_sample (bool coarser, samplepos_t sample)
 {
        if (!_session) {
                return;
        }
 
-       framecnt_t range_before = frame - leftmost_frame;
-       framecnt_t new_spp;
+       samplecnt_t range_before = sample - _leftmost_sample;
+       samplecnt_t new_spp;
 
        if (coarser) {
                if (samples_per_pixel <= 1) {
@@ -2110,13 +2110,13 @@ Editor::temporal_zoom_to_frame (bool coarser, framepos_t frame)
                return;
        }
 
-       /* zoom focus is automatically taken as @param frame when this
+       /* zoom focus is automatically taken as @param sample when this
           method is used.
        */
 
-       framepos_t new_leftmost = frame - (framepos_t)range_before;
+       samplepos_t new_leftmost = sample - (samplepos_t)range_before;
 
-       if (new_leftmost > frame) {
+       if (new_leftmost > sample) {
                new_leftmost = 0;
        }
 
@@ -2177,8 +2177,8 @@ Editor::add_location_from_selection ()
                return;
        }
 
-       framepos_t start = selection->time[clicked_selection].start;
-       framepos_t end = selection->time[clicked_selection].end;
+       samplepos_t start = selection->time[clicked_selection].start;
+       samplepos_t end = selection->time[clicked_selection].end;
 
        _session->locations()->next_available_name(rangename,"selection");
        Location *location = new Location (*_session, start, end, rangename, Location::IsRangeMarker, get_grid_music_divisions(0));
@@ -2194,7 +2194,7 @@ Editor::add_location_from_selection ()
 }
 
 void
-Editor::add_location_mark (framepos_t where)
+Editor::add_location_mark (samplepos_t where)
 {
        string markername;
 
@@ -2223,11 +2223,11 @@ Editor::set_session_start_from_playhead ()
 
        Location* loc;
        if ((loc = _session->locations()->session_range_location()) == 0) {  //should never happen
-               _session->set_session_extents ( _session->audible_frame(), _session->audible_frame() );
+               _session->set_session_extents ( _session->audible_sample(), _session->audible_sample() );
        } else {
                XMLNode &before = loc->get_state();
 
-               _session->set_session_extents ( _session->audible_frame(), loc->end() );
+               _session->set_session_extents ( _session->audible_sample(), loc->end() );
 
                XMLNode &after = loc->get_state();
 
@@ -2247,11 +2247,11 @@ Editor::set_session_end_from_playhead ()
 
        Location* loc;
        if ((loc = _session->locations()->session_range_location()) == 0) {  //should never happen
-               _session->set_session_extents ( _session->audible_frame(), _session->audible_frame() );
+               _session->set_session_extents ( _session->audible_sample(), _session->audible_sample() );
        } else {
                XMLNode &before = loc->get_state();
 
-               _session->set_session_extents ( loc->start(), _session->audible_frame() );
+               _session->set_session_extents ( loc->start(), _session->audible_sample() );
 
                XMLNode &after = loc->get_state();
 
@@ -2278,7 +2278,7 @@ Editor::toggle_location_at_playhead_cursor ()
 void
 Editor::add_location_from_playhead_cursor ()
 {
-       add_location_mark (_session->audible_frame());
+       add_location_mark (_session->audible_sample());
 }
 
 bool
@@ -2291,7 +2291,7 @@ Editor::do_remove_location_at_playhead_cursor ()
 
                //find location(s) at this time
                Locations::LocationList locs;
-               _session->locations()->find_all_between (_session->audible_frame(), _session->audible_frame()+1, locs, Location::Flags(0));
+               _session->locations()->find_all_between (_session->audible_sample(), _session->audible_sample()+1, locs, Location::Flags(0));
                for (Locations::LocationList::iterator i = locs.begin(); i != locs.end(); ++i) {
                        if ((*i)->is_mark()) {
                                _session->locations()->remove (*i);
@@ -2333,7 +2333,7 @@ Editor::add_locations_from_region ()
 
                boost::shared_ptr<Region> region = (*i)->region ();
 
-               Location *location = new Location (*_session, region->position(), region->last_frame(), region->name(), Location::IsRangeMarker, 0);
+               Location *location = new Location (*_session, region->position(), region->last_sample(), region->name(), Location::IsRangeMarker, 0);
 
                _session->locations()->add (location, true);
                commit = true;
@@ -2374,7 +2374,7 @@ Editor::add_location_from_region ()
        }
 
        // single range spanning all selected
-       Location *location = new Location (*_session, selection->regions.start(), selection->regions.end_frame(), markername, Location::IsRangeMarker, 0);
+       Location *location = new Location (*_session, selection->regions.start(), selection->regions.end_sample(), markername, Location::IsRangeMarker, 0);
        _session->locations()->add (location, true);
 
        begin_reversible_command (_("add marker"));
@@ -2392,7 +2392,7 @@ Editor::jump_forward_to_mark ()
                return;
        }
 
-       framepos_t pos = _session->locations()->first_mark_after (playhead_cursor->current_frame());
+       samplepos_t pos = _session->locations()->first_mark_after (playhead_cursor->current_sample());
 
        if (pos < 0) {
                return;
@@ -2408,12 +2408,12 @@ Editor::jump_backward_to_mark ()
                return;
        }
 
-       framepos_t pos = _session->locations()->first_mark_before (playhead_cursor->current_frame());
+       samplepos_t pos = _session->locations()->first_mark_before (playhead_cursor->current_sample());
 
        //handle the case where we are rolling, and we're less than one-half second past the mark, we want to go to the prior mark...
        if ( _session->transport_rolling() ) {
-               if ( (playhead_cursor->current_frame() - pos) < _session->frame_rate()/2 ) {
-                       framepos_t prior = _session->locations()->first_mark_before ( pos );
+               if ( (playhead_cursor->current_sample() - pos) < _session->sample_rate()/2 ) {
+                       samplepos_t prior = _session->locations()->first_mark_before ( pos );
                        pos = prior;
                }
        }
@@ -2428,7 +2428,7 @@ Editor::jump_backward_to_mark ()
 void
 Editor::set_mark ()
 {
-       framepos_t const pos = _session->audible_frame ();
+       samplepos_t const pos = _session->audible_sample ();
 
        string markername;
        _session->locations()->next_available_name (markername, "mark");
@@ -2593,7 +2593,7 @@ Editor::transition_to_rolling (bool fwd)
 void
 Editor::play_from_start ()
 {
-       _session->request_locate (_session->current_start_frame(), true);
+       _session->request_locate (_session->current_start_sample(), true);
 }
 
 void
@@ -2605,31 +2605,31 @@ Editor::play_from_edit_point ()
 void
 Editor::play_from_edit_point_and_return ()
 {
-       framepos_t start_frame;
-       framepos_t return_frame;
+       samplepos_t start_sample;
+       samplepos_t return_sample;
 
-       start_frame = get_preferred_edit_position ( EDIT_IGNORE_PHEAD );
+       start_sample = get_preferred_edit_position ( EDIT_IGNORE_PHEAD );
 
        if (_session->transport_rolling()) {
-               _session->request_locate (start_frame, false);
+               _session->request_locate (start_sample, false);
                return;
        }
 
-       /* don't reset the return frame if its already set */
+       /* don't reset the return sample if its already set */
 
-       if ((return_frame = _session->requested_return_frame()) < 0) {
-               return_frame = _session->audible_frame();
+       if ((return_sample = _session->requested_return_sample()) < 0) {
+               return_sample = _session->audible_sample();
        }
 
-       if (start_frame >= 0) {
-               _session->request_roll_at_and_return (start_frame, return_frame);
+       if (start_sample >= 0) {
+               _session->request_roll_at_and_return (start_sample, return_sample);
        }
 }
 
 void
 Editor::play_selection ()
 {
-       framepos_t start, end;
+       samplepos_t start, end;
        if (!get_selection_extents ( start, end))
                return;
 
@@ -2642,7 +2642,7 @@ Editor::play_selection ()
 
 
 void
-Editor::maybe_locate_with_edit_preroll (framepos_t location)
+Editor::maybe_locate_with_edit_preroll (samplepos_t location)
 {
        if ( _session->transport_rolling() || !UIConfiguration::instance().get_follow_edits() || _session->config.get_external_sync() )
                return;
@@ -2656,8 +2656,8 @@ Editor::maybe_locate_with_edit_preroll (framepos_t location)
 
        //if follow_playhead is on, keep the playhead on the screen
        if ( _follow_playhead )
-               if ( location < leftmost_frame )
-                       location = leftmost_frame;
+               if ( location < _leftmost_sample )
+                       location = _leftmost_sample;
 
        _session->request_locate( location );
 }
@@ -2665,11 +2665,11 @@ Editor::maybe_locate_with_edit_preroll (framepos_t location)
 void
 Editor::play_with_preroll ()
 {
-       framepos_t start, end;
+       samplepos_t start, end;
        if ( UIConfiguration::instance().get_follow_edits() && get_selection_extents ( start, end) ) {
-               const framepos_t preroll = _session->preroll_samples (start);
+               const samplepos_t preroll = _session->preroll_samples (start);
 
-               framepos_t ret = start;
+               samplepos_t ret = start;
 
                if (start > preroll) {
                        start = start - preroll;
@@ -2682,26 +2682,26 @@ Editor::play_with_preroll ()
                lar.push_back (ar);
 
                _session->request_play_range (&lar, true);
-               _session->set_requested_return_frame (ret);  //force auto-return to return to range start, without the preroll
+               _session->set_requested_return_sample (ret);  //force auto-return to return to range start, without the preroll
        } else {
-               framepos_t ph = playhead_cursor->current_frame ();
-               const framepos_t preroll = _session->preroll_samples (ph);
-               framepos_t start;
+               samplepos_t ph = playhead_cursor->current_sample ();
+               const samplepos_t preroll = _session->preroll_samples (ph);
+               samplepos_t start;
                if (ph > preroll) {
                        start = ph - preroll;
                } else {
                        start = 0;
                }
                _session->request_locate (start, true);
-               _session->set_requested_return_frame (ph);  //force auto-return to return to playhead location, without the preroll
+               _session->set_requested_return_sample (ph);  //force auto-return to return to playhead location, without the preroll
        }
 }
 
 void
 Editor::rec_with_preroll ()
 {
-       framepos_t ph = playhead_cursor->current_frame ();
-       framepos_t preroll = _session->preroll_samples (ph);
+       samplepos_t ph = playhead_cursor->current_sample ();
+       samplepos_t preroll = _session->preroll_samples (ph);
        _session->request_preroll_record_trim (ph, preroll);
 }
 
@@ -2905,7 +2905,7 @@ Editor::rename_region ()
 void
 Editor::play_edit_range ()
 {
-       framepos_t start, end;
+       samplepos_t start, end;
 
        if (get_edit_op_range (start, end)) {
                _session->request_bounded_roll (start, end);
@@ -2915,8 +2915,8 @@ Editor::play_edit_range ()
 void
 Editor::play_selected_region ()
 {
-       framepos_t start = max_framepos;
-       framepos_t end = 0;
+       samplepos_t start = max_samplepos;
+       samplepos_t end = 0;
 
        RegionSelection rs = get_regions_from_selection_and_entered ();
 
@@ -2928,8 +2928,8 @@ Editor::play_selected_region ()
                if ((*i)->region()->position() < start) {
                        start = (*i)->region()->position();
                }
-               if ((*i)->region()->last_frame() + 1 > end) {
-                       end = (*i)->region()->last_frame() + 1;
+               if ((*i)->region()->last_sample() + 1 > end) {
+                       end = (*i)->region()->last_sample() + 1;
                }
        }
 
@@ -2953,17 +2953,17 @@ Editor::region_from_selection ()
                return;
        }
 
-       framepos_t start = selection->time[clicked_selection].start;
-       framepos_t end = selection->time[clicked_selection].end;
+       samplepos_t start = selection->time[clicked_selection].start;
+       samplepos_t end = selection->time[clicked_selection].end;
 
        TrackViewList tracks = get_tracks_for_range_action ();
 
-       framepos_t selection_cnt = end - start + 1;
+       samplepos_t selection_cnt = end - start + 1;
 
        for (TrackSelection::iterator i = tracks.begin(); i != tracks.end(); ++i) {
                boost::shared_ptr<Region> current;
                boost::shared_ptr<Playlist> pl;
-               framepos_t internal_start;
+               samplepos_t internal_start;
                string new_name;
 
                if ((pl = (*i)->playlist()) == 0) {
@@ -2995,13 +2995,13 @@ Editor::create_region_from_selection (vector<boost::shared_ptr<Region> >& new_re
                return;
        }
 
-       framepos_t start, end;
+       samplepos_t start, end;
        if (clicked_selection) {
                start = selection->time[clicked_selection].start;
                end = selection->time[clicked_selection].end;
        } else {
                start = selection->time.start();
-               end = selection->time.end_frame();
+               end = selection->time.end_sample();
        }
 
        TrackViewList ts = selection->tracks.filter_to_unique_playlists ();
@@ -3010,7 +3010,7 @@ Editor::create_region_from_selection (vector<boost::shared_ptr<Region> >& new_re
        for (TrackSelection::iterator i = ts.begin(); i != ts.end(); ++i) {
                boost::shared_ptr<Region> current;
                boost::shared_ptr<Playlist> playlist;
-               framepos_t internal_start;
+               samplepos_t internal_start;
                string new_name;
 
                if ((playlist = (*i)->playlist()) == 0) {
@@ -3208,8 +3208,8 @@ Editor::separate_region_from_selection ()
 
        } else {
 
-               framepos_t start;
-               framepos_t end;
+               samplepos_t start;
+               samplepos_t end;
 
                if (get_edit_op_range (start, end)) {
 
@@ -3315,10 +3315,10 @@ Editor::separate_under_selected_regions ()
                }
 
                //Partition on the region bounds
-               playlist->partition ((*rl)->first_frame() - 1, (*rl)->last_frame() + 1, true);
+               playlist->partition ((*rl)->first_sample() - 1, (*rl)->last_sample() + 1, true);
 
                //Re-add region that was just removed due to the partition operation
-               playlist->add_region( (*rl), (*rl)->first_frame() );
+               playlist->add_region( (*rl), (*rl)->first_sample() );
        }
 
        vector<PlaylistState>::iterator pl;
@@ -3343,8 +3343,8 @@ Editor::crop_region_to_selection ()
                commit_reversible_command();
        } else {
 
-               framepos_t start;
-               framepos_t end;
+               samplepos_t start;
+               samplepos_t end;
 
                if (get_edit_op_range (start, end)) {
                        begin_reversible_command (_("Crop Regions to Edit Range"));
@@ -3358,7 +3358,7 @@ Editor::crop_region_to_selection ()
 }
 
 void
-Editor::crop_region_to (framepos_t start, framepos_t end)
+Editor::crop_region_to (samplepos_t start, samplepos_t end)
 {
        vector<boost::shared_ptr<Playlist> > playlists;
        boost::shared_ptr<Playlist> playlist;
@@ -3394,10 +3394,10 @@ Editor::crop_region_to (framepos_t start, framepos_t end)
                return;
        }
 
-       framepos_t pos;
-       framepos_t new_start;
-       framepos_t new_end;
-       framecnt_t new_length;
+       samplepos_t pos;
+       samplepos_t new_start;
+       samplepos_t new_end;
+       samplecnt_t new_length;
 
        for (vector<boost::shared_ptr<Playlist> >::iterator i = playlists.begin(); i != playlists.end(); ++i) {
 
@@ -3419,10 +3419,10 @@ Editor::crop_region_to (framepos_t start, framepos_t end)
 
                        pos = (*i)->position();
                        new_start = max (start, pos);
-                       if (max_framepos - pos > (*i)->length()) {
+                       if (max_samplepos - pos > (*i)->length()) {
                                new_end = pos + (*i)->length() - 1;
                        } else {
-                               new_end = max_framepos;
+                               new_end = max_samplepos;
                        }
                        new_end = min (end, new_end);
                        new_length = new_end - new_start + 1;
@@ -3441,15 +3441,15 @@ Editor::region_fill_track ()
        RegionSelection regions = get_regions_from_selection_and_entered ();
        RegionSelection foo;
 
-       framepos_t const end = _session->current_end_frame ();
+       samplepos_t const end = _session->current_end_sample ();
 
-       if (regions.empty () || regions.end_frame () + 1 >= end) {
+       if (regions.empty () || regions.end_sample () + 1 >= end) {
                return;
        }
 
-       framepos_t const start_frame = regions.start ();
-       framepos_t const end_frame = regions.end_frame ();
-       framecnt_t const gap = end_frame - start_frame + 1;
+       samplepos_t const start_sample = regions.start ();
+       samplepos_t const end_sample = regions.end_sample ();
+       samplecnt_t const gap = end_sample - start_sample + 1;
 
        begin_reversible_command (Operations::region_fill);
 
@@ -3464,7 +3464,7 @@ Editor::region_fill_track ()
                latest_regionviews.clear ();
                sigc::connection c = rtv->view()->RegionViewAdded.connect (sigc::mem_fun(*this, &Editor::collect_new_region_view));
 
-               framepos_t const position = end_frame + (r->first_frame() - start_frame + 1);
+               samplepos_t const position = end_sample + (r->first_sample() - start_sample + 1);
                playlist = (*i)->region()->playlist();
                playlist->clear_changes ();
                playlist->duplicate_until (r, position, gap, end);
@@ -3489,7 +3489,7 @@ Editor::set_region_sync_position ()
 }
 
 void
-Editor::set_sync_point (framepos_t where, const RegionSelection& rs)
+Editor::set_sync_point (samplepos_t where, const RegionSelection& rs)
 {
        bool in_command = false;
 
@@ -3573,7 +3573,7 @@ Editor::align_regions (RegionPoint what)
 
        begin_reversible_command (_("align selection"));
 
-       framepos_t const position = get_preferred_edit_position ();
+       samplepos_t const position = get_preferred_edit_position ();
 
        for (RegionSelection::const_iterator i = rs.begin(); i != rs.end(); ++i) {
                align_region_internal ((*i)->region(), what, position);
@@ -3597,10 +3597,10 @@ Editor::align_regions_relative (RegionPoint point)
                return;
        }
 
-       framepos_t const position = get_preferred_edit_position ();
+       samplepos_t const position = get_preferred_edit_position ();
 
-       framepos_t distance = 0;
-       framepos_t pos = 0;
+       samplepos_t distance = 0;
+       samplepos_t pos = 0;
        int dir = 1;
 
        list<RegionView*> sorted;
@@ -3620,11 +3620,11 @@ Editor::align_regions_relative (RegionPoint point)
                break;
 
        case End:
-               if (position > r->last_frame()) {
-                       distance = position - r->last_frame();
+               if (position > r->last_sample()) {
+                       distance = position - r->last_sample();
                        pos = r->position() + distance;
                } else {
-                       distance = r->last_frame() - position;
+                       distance = r->last_sample() - position;
                        pos = r->position() - distance;
                        dir = -1;
                }
@@ -3677,7 +3677,7 @@ Editor::align_regions_relative (RegionPoint point)
 }
 
 void
-Editor::align_region (boost::shared_ptr<Region> region, RegionPoint point, framepos_t position)
+Editor::align_region (boost::shared_ptr<Region> region, RegionPoint point, samplepos_t position)
 {
        begin_reversible_command (_("align region"));
        align_region_internal (region, point, position);
@@ -3685,7 +3685,7 @@ Editor::align_region (boost::shared_ptr<Region> region, RegionPoint point, frame
 }
 
 void
-Editor::align_region_internal (boost::shared_ptr<Region> region, RegionPoint point, framepos_t position)
+Editor::align_region_internal (boost::shared_ptr<Region> region, RegionPoint point, samplepos_t position)
 {
        region->clear_changes ();
 
@@ -3723,7 +3723,7 @@ Editor::trim_region_back ()
 void
 Editor::trim_region (bool front)
 {
-       framepos_t where = get_preferred_edit_position();
+       samplepos_t where = get_preferred_edit_position();
        RegionSelection rs = get_regions_from_selection_and_edit_point ();
 
        if (rs.empty()) {
@@ -3793,8 +3793,8 @@ Editor::trim_region_to_location (const Location& loc, const char* str)
                        return;
                }
 
-               framepos_t start;
-               framepos_t end;
+               samplepos_t start;
+               samplepos_t end;
 
                start = loc.start();
                end = loc.end();
@@ -3855,24 +3855,24 @@ Editor::trim_to_region(bool forward)
 
                if (forward) {
 
-                       next_region = playlist->find_next_region (region->first_frame(), Start, 1);
+                       next_region = playlist->find_next_region (region->first_sample(), Start, 1);
 
                        if (!next_region) {
                                continue;
                        }
 
-                   region->trim_end (next_region->first_frame() - 1);
+                   region->trim_end (next_region->first_sample() - 1);
                    arv->region_changed (PropertyChange (ARDOUR::Properties::length));
                }
                else {
 
-                       next_region = playlist->find_next_region (region->first_frame(), Start, 0);
+                       next_region = playlist->find_next_region (region->first_sample(), Start, 0);
 
                        if (!next_region) {
                                continue;
                        }
 
-                       region->trim_front (next_region->last_frame() + 1);
+                       region->trim_front (next_region->last_sample() + 1);
                        arv->region_changed (ARDOUR::bounds_change);
                }
 
@@ -4008,9 +4008,9 @@ Editor::bounce_range_selection (bool replace, bool enable_processing)
                }
        }
 
-       framepos_t start = selection->time[clicked_selection].start;
-       framepos_t end = selection->time[clicked_selection].end;
-       framepos_t cnt = end - start + 1;
+       samplepos_t start = selection->time[clicked_selection].start;
+       samplepos_t end = selection->time[clicked_selection].end;
+       samplepos_t cnt = end - start + 1;
        bool in_command = false;
 
        for (TrackViewList::iterator i = views.begin(); i != views.end(); ++i) {
@@ -4197,7 +4197,7 @@ Editor::cut_copy (CutCopyOp op)
                        }
                }
        } else if (selection->time.empty()) {
-               framepos_t start, end;
+               samplepos_t start, end;
                /* no time selection, see if we can get an edit range
                   and use that.
                */
@@ -4284,7 +4284,7 @@ Editor::cut_copy_points (Editing::CutCopyOp op, Evoral::Beats earliest, bool mid
                }
 
                /* Add all selected points to the relevant copy ControlLists */
-               MusicFrame start (std::numeric_limits<framepos_t>::max(), 0);
+               MusicSample start (std::numeric_limits<samplepos_t>::max(), 0);
                for (PointSelection::iterator sel_point = selection->points.begin(); sel_point != selection->points.end(); ++sel_point) {
                        boost::shared_ptr<AutomationList>    al = (*sel_point)->line().the_list();
                        AutomationList::const_iterator ctrl_evt = (*sel_point)->model ();
@@ -4294,8 +4294,8 @@ Editor::cut_copy_points (Editing::CutCopyOp op, Evoral::Beats earliest, bool mid
                                /* Update earliest MIDI start time in beats */
                                earliest = std::min(earliest, Evoral::Beats((*ctrl_evt)->when));
                        } else {
-                               /* Update earliest session start time in frames */
-                               start.frame = std::min(start.frame, (*sel_point)->line().session_position(ctrl_evt));
+                               /* Update earliest session start time in samples */
+                               start.sample = std::min(start.sample, (*sel_point)->line().session_position(ctrl_evt));
                        }
                }
 
@@ -4306,13 +4306,13 @@ Editor::cut_copy_points (Editing::CutCopyOp op, Evoral::Beats earliest, bool mid
                        }
                        earliest.round_down_to_beat();
                } else {
-                       if (start.frame == std::numeric_limits<double>::max()) {
-                               start.frame = 0;  // Weird... don't offset
+                       if (start.sample == std::numeric_limits<double>::max()) {
+                               start.sample = 0;  // Weird... don't offset
                        }
                        snap_to(start, RoundDownMaybe);
                }
 
-               const double line_offset = midi ? earliest.to_double() : start.frame;
+               const double line_offset = midi ? earliest.to_double() : start.sample;
                for (Lists::iterator i = lists.begin(); i != lists.end(); ++i) {
                        /* Correct this copy list so that it is relative to the earliest
                           start time, so relative ordering between points is preserved
@@ -4524,7 +4524,7 @@ Editor::cut_copy_regions (CutCopyOp op, RegionSelection& rs)
 
        vector<PlaylistMapping> pmap;
 
-       framepos_t first_position = max_framepos;
+       samplepos_t first_position = max_samplepos;
 
        typedef set<boost::shared_ptr<Playlist> > FreezeList;
        FreezeList freezelist;
@@ -4535,7 +4535,7 @@ Editor::cut_copy_regions (CutCopyOp op, RegionSelection& rs)
 
        for (RegionSelection::iterator x = rs.begin(); x != rs.end(); ++x) {
 
-               first_position = min ((framepos_t) (*x)->region()->position(), first_position);
+               first_position = min ((samplepos_t) (*x)->region()->position(), first_position);
 
                if (op == Cut || op == Clear || op == Delete) {
                        boost::shared_ptr<Playlist> pl = (*x)->region()->playlist();
@@ -4715,25 +4715,25 @@ void
 Editor::paste (float times, bool from_context)
 {
        DEBUG_TRACE (DEBUG::CutNPaste, "paste to preferred edit pos\n");
-       MusicFrame where (get_preferred_edit_position (EDIT_IGNORE_NONE, from_context), 0);
-       paste_internal (where.frame, times, 0);
+       MusicSample where (get_preferred_edit_position (EDIT_IGNORE_NONE, from_context), 0);
+       paste_internal (where.sample, times, 0);
 }
 
 void
 Editor::mouse_paste ()
 {
-       MusicFrame where (0, 0);
+       MusicSample where (0, 0);
        bool ignored;
-       if (!mouse_frame (where.frame, ignored)) {
+       if (!mouse_sample (where.sample, ignored)) {
                return;
        }
 
        snap_to (where);
-       paste_internal (where.frame, 1, where.division);
+       paste_internal (where.sample, 1, where.division);
 }
 
 void
-Editor::paste_internal (framepos_t position, float times, const int32_t sub_num)
+Editor::paste_internal (samplepos_t position, float times, const int32_t sub_num)
 {
        DEBUG_TRACE (DEBUG::CutNPaste, string_compose ("apparent paste position is %1\n", position));
 
@@ -4741,7 +4741,7 @@ Editor::paste_internal (framepos_t position, float times, const int32_t sub_num)
                return;
        }
 
-       if (position == max_framepos) {
+       if (position == max_samplepos) {
                position = get_preferred_edit_position();
                DEBUG_TRACE (DEBUG::CutNPaste, string_compose ("preferred edit position is %1\n", position));
        }
@@ -4859,9 +4859,9 @@ Editor::duplicate_some_regions (RegionSelection& regions, float times)
        RegionSelection sel = regions; // clear (below) may  clear the argument list if its the current region selection
        RegionSelection foo;
 
-       framepos_t const start_frame = regions.start ();
-       framepos_t const end_frame = regions.end_frame ();
-       framecnt_t const gap = end_frame - start_frame + 1;
+       samplepos_t const start_sample = regions.start ();
+       samplepos_t const end_sample = regions.end_sample ();
+       samplecnt_t const gap = end_sample - start_sample + 1;
 
        begin_reversible_command (Operations::duplicate_region);
 
@@ -4876,7 +4876,7 @@ Editor::duplicate_some_regions (RegionSelection& regions, float times)
                latest_regionviews.clear ();
                sigc::connection c = rtv->view()->RegionViewAdded.connect (sigc::mem_fun(*this, &Editor::collect_new_region_view));
 
-               framepos_t const position = end_frame + (r->first_frame() - start_frame + 1);
+               samplepos_t const position = end_sample + (r->first_sample() - start_sample + 1);
                playlist = (*i)->region()->playlist();
                playlist->clear_changes ();
                playlist->duplicate (r, position, gap, times);
@@ -4930,13 +4930,13 @@ Editor::duplicate_selection (float times)
        if (in_command) {
                if (times == 1.0f) {
                        // now "move" range selection to after the current range selection
-                       framecnt_t distance = 0;
+                       samplecnt_t distance = 0;
 
                        if (clicked_selection) {
                                distance =
                                    selection->time[clicked_selection].end - selection->time[clicked_selection].start;
                        } else {
-                               distance = selection->time.end_frame () - selection->time.start ();
+                               distance = selection->time.end_sample () - selection->time.start ();
                        }
 
                        selection->move_time (distance);
@@ -4959,7 +4959,7 @@ void
 Editor::center_playhead ()
 {
        float const page = _visible_canvas_width * samples_per_pixel;
-       center_screen_internal (playhead_cursor->current_frame (), page);
+       center_screen_internal (playhead_cursor->current_sample (), page);
 }
 
 void
@@ -4982,9 +4982,9 @@ void
 Editor::nudge_track (bool use_edit, bool forwards)
 {
        boost::shared_ptr<Playlist> playlist;
-       framepos_t distance;
-       framepos_t next_distance;
-       framepos_t start;
+       samplepos_t distance;
+       samplepos_t next_distance;
+       samplepos_t start;
 
        if (use_edit) {
                start = get_preferred_edit_position();
@@ -5535,7 +5535,7 @@ Editor::insert_patch_change (bool from_context)
                return;
        }
 
-       const framepos_t p = get_preferred_edit_position (EDIT_IGNORE_NONE, from_context);
+       const samplepos_t p = get_preferred_edit_position (EDIT_IGNORE_NONE, from_context);
 
        /* XXX: bit of a hack; use the MIDNAM from the first selected region;
           there may be more than one, but the PatchChangeDialog can only offer
@@ -5553,7 +5553,7 @@ Editor::insert_patch_change (bool from_context)
        for (RegionSelection::iterator i = rs.begin (); i != rs.end(); ++i) {
                MidiRegionView* const mrv = dynamic_cast<MidiRegionView*> (*i);
                if (mrv) {
-                       if (p >= mrv->region()->first_frame() && p <= mrv->region()->last_frame()) {
+                       if (p >= mrv->region()->first_sample() && p <= mrv->region()->last_sample()) {
                                mrv->add_patch_change (p - mrv->region()->position(), d.patch ());
                        }
                }
@@ -5948,11 +5948,11 @@ Editor::set_fade_length (bool in)
 
        RegionView* rv = rs.front ();
 
-       framepos_t pos = get_preferred_edit_position();
-       framepos_t len;
+       samplepos_t pos = get_preferred_edit_position();
+       samplepos_t len;
        char const * cmd;
 
-       if (pos > rv->region()->last_frame() || pos < rv->region()->first_frame()) {
+       if (pos > rv->region()->last_sample() || pos < rv->region()->first_sample()) {
                /* edit point is outside the relevant region */
                return;
        }
@@ -5965,11 +5965,11 @@ Editor::set_fade_length (bool in)
                len = pos - rv->region()->position();
                cmd = _("set fade in length");
        } else {
-               if (pos >= rv->region()->last_frame()) {
+               if (pos >= rv->region()->last_sample()) {
                        /* can't do it */
                        return;
                }
-               len = rv->region()->last_frame() - pos;
+               len = rv->region()->last_sample() - pos;
                cmd = _("set fade out length");
        }
 
@@ -6234,9 +6234,9 @@ void
 Editor::set_edit_point ()
 {
        bool ignored;
-       MusicFrame where (0, 0);
+       MusicSample where (0, 0);
 
-       if (!mouse_frame (where.frame, ignored)) {
+       if (!mouse_sample (where.sample, ignored)) {
                return;
        }
 
@@ -6244,7 +6244,7 @@ Editor::set_edit_point ()
 
        if (selection->markers.empty()) {
 
-               mouse_add_new_marker (where.frame);
+               mouse_add_new_marker (where.sample);
 
        } else {
                bool ignored;
@@ -6252,7 +6252,7 @@ Editor::set_edit_point ()
                Location* loc = find_location_from_marker (selection->markers.front(), ignored);
 
                if (loc) {
-                       loc->move_to (where.frame, where.division);
+                       loc->move_to (where.sample, where.division);
                }
        }
 }
@@ -6263,17 +6263,17 @@ Editor::set_playhead_cursor ()
        if (entered_marker) {
                _session->request_locate (entered_marker->position(), _session->transport_rolling());
        } else {
-               MusicFrame where (0, 0);
+               MusicSample where (0, 0);
                bool ignored;
 
-               if (!mouse_frame (where.frame, ignored)) {
+               if (!mouse_sample (where.sample, ignored)) {
                        return;
                }
 
                snap_to (where);
 
                if (_session) {
-                       _session->request_locate (where.frame, _session->transport_rolling());
+                       _session->request_locate (where.sample, _session->transport_rolling());
                }
        }
 
@@ -6301,9 +6301,9 @@ Editor::split_region ()
        if (current_mouse_mode() == MouseObject) {  //don't try this for Internal Edit, Stretch, Draw, etc.
 
                RegionSelection rs = get_regions_from_selection_and_edit_point ();
-               const framepos_t pos = get_preferred_edit_position();
+               const samplepos_t pos = get_preferred_edit_position();
                const int32_t division = get_grid_music_divisions (0);
-               MusicFrame where (pos, division);
+               MusicSample where (pos, division);
 
                if (rs.empty()) {
                        return;
@@ -6399,7 +6399,7 @@ Editor::set_loop_from_selection (bool play)
                return;
        }
 
-       framepos_t start, end;
+       samplepos_t start, end;
        if (!get_selection_extents ( start, end))
                return;
 
@@ -6413,7 +6413,7 @@ Editor::set_loop_from_selection (bool play)
 void
 Editor::set_loop_from_region (bool play)
 {
-       framepos_t start, end;
+       samplepos_t start, end;
        if (!get_selection_extents ( start, end))
                return;
 
@@ -6432,7 +6432,7 @@ Editor::set_punch_from_selection ()
                return;
        }
 
-       framepos_t start, end;
+       samplepos_t start, end;
        if (!get_selection_extents ( start, end))
                return;
 
@@ -6454,9 +6454,9 @@ Editor::set_auto_punch_range ()
        }
 
        Location* tpl = transport_punch_location();
-       framepos_t now = playhead_cursor->current_frame();
-       framepos_t begin = now;
-       framepos_t end = _session->current_end_frame();
+       samplepos_t now = playhead_cursor->current_sample();
+       samplepos_t begin = now;
+       samplepos_t end = _session->current_end_sample();
 
        if (!_session->config.get_punch_in()) {
                // First Press - set punch in and create range from here to eternity
@@ -6470,7 +6470,7 @@ Editor::set_auto_punch_range ()
                        set_punch_range (begin, end, _("Auto Punch In/Out"));
                } else {
                        // normal case for 2nd press - set the punch out
-                       end = playhead_cursor->current_frame ();
+                       end = playhead_cursor->current_sample ();
                        set_punch_range (tpl->start(), now, _("Auto Punch In/Out"));
                        _session->config.set_punch_out(true);
                }
@@ -6499,7 +6499,7 @@ Editor::set_session_extents_from_selection ()
                return;
        }
 
-       framepos_t start, end;
+       samplepos_t start, end;
        if (!get_selection_extents ( start, end))
                return;
 
@@ -6528,8 +6528,8 @@ Editor::set_punch_start_from_edit_point ()
 {
        if (_session) {
 
-               MusicFrame start (0, 0);
-               framepos_t end = max_framepos;
+               MusicSample start (0, 0);
+               samplepos_t end = max_samplepos;
 
                //use the existing punch end, if any
                Location* tpl = transport_punch_location();
@@ -6538,20 +6538,20 @@ Editor::set_punch_start_from_edit_point ()
                }
 
                if ((_edit_point == EditAtPlayhead) && _session->transport_rolling()) {
-                       start.frame = _session->audible_frame();
+                       start.sample = _session->audible_sample();
                } else {
-                       start.frame = get_preferred_edit_position();
+                       start.sample = get_preferred_edit_position();
                }
 
                //snap the selection start/end
                snap_to(start);
 
                //if there's not already a sensible selection endpoint, go "forever"
-               if (start.frame > end ) {
-                       end = max_framepos;
+               if (start.sample > end ) {
+                       end = max_samplepos;
                }
 
-               set_punch_range (start.frame, end, _("set punch start from EP"));
+               set_punch_range (start.sample, end, _("set punch start from EP"));
        }
 
 }
@@ -6561,8 +6561,8 @@ Editor::set_punch_end_from_edit_point ()
 {
        if (_session) {
 
-               framepos_t start = 0;
-               MusicFrame end (max_framepos, 0);
+               samplepos_t start = 0;
+               MusicSample end (max_samplepos, 0);
 
                //use the existing punch start, if any
                Location* tpl = transport_punch_location();
@@ -6571,15 +6571,15 @@ Editor::set_punch_end_from_edit_point ()
                }
 
                if ((_edit_point == EditAtPlayhead) && _session->transport_rolling()) {
-                       end.frame = _session->audible_frame();
+                       end.sample = _session->audible_sample();
                } else {
-                       end.frame = get_preferred_edit_position();
+                       end.sample = get_preferred_edit_position();
                }
 
                //snap the selection start/end
                snap_to (end);
 
-               set_punch_range (start, end.frame, _("set punch end from EP"));
+               set_punch_range (start, end.sample, _("set punch end from EP"));
 
        }
 }
@@ -6589,8 +6589,8 @@ Editor::set_loop_start_from_edit_point ()
 {
        if (_session) {
 
-               MusicFrame start (0, 0);
-               framepos_t end = max_framepos;
+               MusicSample start (0, 0);
+               samplepos_t end = max_samplepos;
 
                //use the existing loop end, if any
                Location* tpl = transport_loop_location();
@@ -6599,20 +6599,20 @@ Editor::set_loop_start_from_edit_point ()
                }
 
                if ((_edit_point == EditAtPlayhead) && _session->transport_rolling()) {
-                       start.frame = _session->audible_frame();
+                       start.sample = _session->audible_sample();
                } else {
-                       start.frame = get_preferred_edit_position();
+                       start.sample = get_preferred_edit_position();
                }
 
                //snap the selection start/end
                snap_to (start);
 
                //if there's not already a sensible selection endpoint, go "forever"
-               if (start.frame > end ) {
-                       end = max_framepos;
+               if (start.sample > end ) {
+                       end = max_samplepos;
                }
 
-               set_loop_range (start.frame, end, _("set loop start from EP"));
+               set_loop_range (start.sample, end, _("set loop start from EP"));
        }
 
 }
@@ -6622,8 +6622,8 @@ Editor::set_loop_end_from_edit_point ()
 {
        if (_session) {
 
-               framepos_t start = 0;
-               MusicFrame end (max_framepos, 0);
+               samplepos_t start = 0;
+               MusicSample end (max_samplepos, 0);
 
                //use the existing loop start, if any
                Location* tpl = transport_loop_location();
@@ -6632,22 +6632,22 @@ Editor::set_loop_end_from_edit_point ()
                }
 
                if ((_edit_point == EditAtPlayhead) && _session->transport_rolling()) {
-                       end.frame = _session->audible_frame();
+                       end.sample = _session->audible_sample();
                } else {
-                       end.frame = get_preferred_edit_position();
+                       end.sample = get_preferred_edit_position();
                }
 
                //snap the selection start/end
                snap_to(end);
 
-               set_loop_range (start, end.frame, _("set loop end from EP"));
+               set_loop_range (start, end.sample, _("set loop end from EP"));
        }
 }
 
 void
 Editor::set_punch_from_region ()
 {
-       framepos_t start, end;
+       samplepos_t start, end;
        if (!get_selection_extents ( start, end))
                return;
 
@@ -6684,40 +6684,40 @@ Editor::set_tempo_from_region ()
 
        RegionView* rv = rs.front();
 
-       define_one_bar (rv->region()->position(), rv->region()->last_frame() + 1);
+       define_one_bar (rv->region()->position(), rv->region()->last_sample() + 1);
 }
 
 void
 Editor::use_range_as_bar ()
 {
-       framepos_t start, end;
+       samplepos_t start, end;
        if (get_edit_op_range (start, end)) {
                define_one_bar (start, end);
        }
 }
 
 void
-Editor::define_one_bar (framepos_t start, framepos_t end)
+Editor::define_one_bar (samplepos_t start, samplepos_t end)
 {
-       framepos_t length = end - start;
+       samplepos_t length = end - start;
 
-       const Meter& m (_session->tempo_map().meter_at_frame (start));
+       const Meter& m (_session->tempo_map().meter_at_sample (start));
 
        /* length = 1 bar */
 
        /* We're going to deliver a constant tempo here,
-          so we can use frames per beat to determine length.
-          now we want frames per beat.
-          we have frames per bar, and beats per bar, so ...
+          so we can use samples per beat to determine length.
+          now we want samples per beat.
+          we have samples per bar, and beats per bar, so ...
        */
 
        /* XXXX METER MATH */
 
-       double frames_per_beat = length / m.divisions_per_bar();
+       double samples_per_beat = length / m.divisions_per_bar();
 
        /* beats per minute = */
 
-       double beats_per_minute = (_session->frame_rate() * 60.0) / frames_per_beat;
+       double beats_per_minute = (_session->sample_rate() * 60.0) / samples_per_beat;
 
        /* now decide whether to:
 
@@ -6726,7 +6726,7 @@ Editor::define_one_bar (framepos_t start, framepos_t end)
 
        */
 
-       const TempoSection& t (_session->tempo_map().tempo_section_at_frame (start));
+       const TempoSection& t (_session->tempo_map().tempo_section_at_sample (start));
 
        bool do_global = false;
 
@@ -6774,7 +6774,7 @@ Editor::define_one_bar (framepos_t start, framepos_t end)
 
        if (do_global) {
                _session->tempo_map().change_initial_tempo (beats_per_minute, t.note_type(), t.end_note_types_per_minute());
-       } else if (t.frame() == start) {
+       } else if (t.sample() == start) {
                _session->tempo_map().change_existing_tempo_at (start, beats_per_minute, t.note_type(), t.end_note_types_per_minute());
        } else {
                /* constant tempo */
@@ -6890,10 +6890,10 @@ Editor::split_region_at_points (boost::shared_ptr<Region> r, AnalysisFeatureList
        pl->freeze ();
        pl->remove_region (r);
 
-       framepos_t pos = 0;
+       samplepos_t pos = 0;
 
-       framepos_t rstart = r->first_frame ();
-       framepos_t rend = r->last_frame ();
+       samplepos_t rstart = r->first_sample ();
+       samplepos_t rend = r->last_sample ();
 
        while (x != positions.end()) {
 
@@ -6905,11 +6905,11 @@ Editor::split_region_at_points (boost::shared_ptr<Region> r, AnalysisFeatureList
 
                /* file start = original start + how far we from the initial position ?  */
 
-               framepos_t file_start = r->start() + pos;
+               samplepos_t file_start = r->start() + pos;
 
                /* length = next position - current position */
 
-               framepos_t len = (*x) - pos - rstart;
+               samplepos_t len = (*x) - pos - rstart;
 
                /* XXX we do we really want to allow even single-sample regions?
                 * shouldn't we have some kind of lower limit on region size?
@@ -6959,7 +6959,7 @@ Editor::split_region_at_points (boost::shared_ptr<Region> r, AnalysisFeatureList
        PropertyList plist;
 
        plist.add (ARDOUR::Properties::start, r->start() + pos);
-       plist.add (ARDOUR::Properties::length, r->last_frame() - (r->position() + pos) + 1);
+       plist.add (ARDOUR::Properties::length, r->last_sample() - (r->position() + pos) + 1);
        plist.add (ARDOUR::Properties::name, new_name);
        plist.add (ARDOUR::Properties::layer, 0);
 
@@ -7006,7 +7006,7 @@ Editor::place_transient()
                return;
        }
 
-       framepos_t where = get_preferred_edit_position();
+       samplepos_t where = get_preferred_edit_position();
 
        begin_reversible_command (_("place transient"));
 
@@ -7057,9 +7057,9 @@ Editor::snap_regions_to_grid ()
                }
                (*r)->region()->clear_changes ();
 
-               MusicFrame start ((*r)->region()->first_frame (), 0);
+               MusicSample start ((*r)->region()->first_sample (), 0);
                snap_to (start);
-               (*r)->region()->set_position (start.frame, start.division);
+               (*r)->region()->set_position (start.sample, start.division);
                _session->add_command(new StatefulDiffCommand ((*r)->region()));
        }
 
@@ -7119,11 +7119,11 @@ Editor::close_region_gaps ()
                return;
        }
 
-       framepos_t crossfade_len = spin_crossfade.get_value();
-       framepos_t pull_back_frames = spin_pullback.get_value();
+       samplepos_t crossfade_len = spin_crossfade.get_value();
+       samplepos_t pull_back_samples = spin_pullback.get_value();
 
-       crossfade_len = lrintf (crossfade_len * _session->frame_rate()/1000);
-       pull_back_frames = lrintf (pull_back_frames * _session->frame_rate()/1000);
+       crossfade_len = lrintf (crossfade_len * _session->sample_rate()/1000);
+       pull_back_samples = lrintf (pull_back_samples * _session->sample_rate()/1000);
 
        /* Iterate over the region list and make adjacent regions overlap by crossfade_len_ms */
 
@@ -7146,7 +7146,7 @@ Editor::close_region_gaps ()
                        pl->freeze();
                }
 
-               framepos_t position = (*r)->region()->position();
+               samplepos_t position = (*r)->region()->position();
 
                if (idx == 0 || position < last_region->position()){
                        last_region = (*r)->region();
@@ -7155,10 +7155,10 @@ Editor::close_region_gaps ()
                }
 
                (*r)->region()->clear_changes ();
-               (*r)->region()->trim_front( (position - pull_back_frames));
+               (*r)->region()->trim_front( (position - pull_back_samples));
 
                last_region->clear_changes ();
-               last_region->trim_end( (position - pull_back_frames + crossfade_len));
+               last_region->trim_end( (position - pull_back_samples + crossfade_len));
 
                _session->add_command (new StatefulDiffCommand ((*r)->region()));
                _session->add_command (new StatefulDiffCommand (last_region));
@@ -7187,7 +7187,7 @@ Editor::tab_to_transient (bool forward)
                return;
        }
 
-       framepos_t pos = _session->audible_frame ();
+       samplepos_t pos = _session->audible_sample ();
 
        if (!selection->tracks.empty()) {
 
@@ -7205,7 +7205,7 @@ Editor::tab_to_transient (bool forward)
                                if (tr) {
                                        boost::shared_ptr<Playlist> pl = tr->playlist ();
                                        if (pl) {
-                                               framepos_t result = pl->find_next_transient (pos, forward ? 1 : -1);
+                                               samplepos_t result = pl->find_next_transient (pos, forward ? 1 : -1);
 
                                                if (result >= 0) {
                                                        positions.push_back (result);
@@ -7226,7 +7226,7 @@ Editor::tab_to_transient (bool forward)
                }
        }
 
-       TransientDetector::cleanup_transients (positions, _session->frame_rate(), 3.0);
+       TransientDetector::cleanup_transients (positions, _session->sample_rate(), 3.0);
 
        if (forward) {
                AnalysisFeatureList::iterator x;
@@ -7263,12 +7263,12 @@ Editor::playhead_forward_to_grid ()
                return;
        }
 
-       MusicFrame pos (playhead_cursor->current_frame (), 0);
+       MusicSample pos (playhead_cursor->current_sample (), 0);
 
-       if (pos.frame < max_framepos - 1) {
-               pos.frame += 2;
+       if (pos.sample < max_samplepos - 1) {
+               pos.sample += 2;
                snap_to_internal (pos, RoundUpAlways, false, true);
-               _session->request_locate (pos.frame);
+               _session->request_locate (pos.sample);
        }
 }
 
@@ -7280,12 +7280,12 @@ Editor::playhead_backward_to_grid ()
                return;
        }
 
-       MusicFrame pos  (playhead_cursor->current_frame (), 0);
+       MusicSample pos  (playhead_cursor->current_sample (), 0);
 
-       if (pos.frame > 2) {
-               pos.frame -= 2;
+       if (pos.sample > 2) {
+               pos.sample -= 2;
                snap_to_internal (pos, RoundDownAlways, false, true);
-               _session->request_locate (pos.frame);
+               _session->request_locate (pos.sample);
        }
 }
 
@@ -7543,7 +7543,7 @@ Editor::do_insert_time ()
 
 void
 Editor::insert_time (
-       framepos_t pos, framecnt_t frames, InsertTimeOption opt,
+       samplepos_t pos, samplecnt_t samples, InsertTimeOption opt,
        bool all_playlists, bool ignore_music_glue, bool markers_too, bool glued_markers_too, bool locked_markers_too, bool tempo_too
        )
 {
@@ -7592,10 +7592,10 @@ Editor::insert_time (
 
                        if (opt == SplitIntersected) {
                                /* non musical split */
-                               (*i)->split (MusicFrame (pos, 0));
+                               (*i)->split (MusicSample (pos, 0));
                        }
 
-                       (*i)->shift (pos, frames, (opt == MoveIntersected), ignore_music_glue);
+                       (*i)->shift (pos, samples, (opt == MoveIntersected), ignore_music_glue);
 
                        vector<Command*> cmds;
                        (*i)->rdiff (cmds);
@@ -7611,7 +7611,7 @@ Editor::insert_time (
                                begin_reversible_command (_("insert time"));
                                in_command = true;
                        }
-                       rtav->route ()->shift (pos, frames);
+                       rtav->route ()->shift (pos, samples);
                }
        }
 
@@ -7635,9 +7635,9 @@ Editor::insert_time (
                                if ((*i)->start() >= pos) {
                                        // move end first, in case we're moving by more than the length of the range
                                        if (!(*i)->is_mark()) {
-                                               (*i)->set_end ((*i)->end() + frames, false, true, divisions);
+                                               (*i)->set_end ((*i)->end() + samples, false, true, divisions);
                                        }
-                                       (*i)->set_start ((*i)->start() + frames, false, true, divisions);
+                                       (*i)->set_start ((*i)->start() + samples, false, true, divisions);
                                        moved = true;
                                }
 
@@ -7663,7 +7663,7 @@ Editor::insert_time (
                        in_command = true;
                }
                XMLNode& before (_session->tempo_map().get_state());
-               _session->tempo_map().insert_time (pos, frames);
+               _session->tempo_map().insert_time (pos, samples);
                XMLNode& after (_session->tempo_map().get_state());
                _session->add_command (new MementoCommand<TempoMap>(_session->tempo_map(), &before, &after));
        }
@@ -7688,7 +7688,7 @@ Editor::do_remove_time ()
                return;
        }
 
-       framecnt_t distance = d.distance();
+       samplecnt_t distance = d.distance();
 
        if (distance == 0) {
                return;
@@ -7707,7 +7707,7 @@ Editor::do_remove_time ()
 }
 
 void
-Editor::remove_time (framepos_t pos, framecnt_t frames, InsertTimeOption opt,
+Editor::remove_time (samplepos_t pos, samplecnt_t samples, InsertTimeOption opt,
                      bool ignore_music_glue, bool markers_too, bool glued_markers_too, bool locked_markers_too, bool tempo_too)
 {
        if (Config->get_edit_mode() == Lock) {
@@ -7730,10 +7730,10 @@ Editor::remove_time (framepos_t pos, framecnt_t frames, InsertTimeOption opt,
                        }
 
                        std::list<AudioRange> rl;
-                       AudioRange ar(pos, pos+frames, 0);
+                       AudioRange ar(pos, pos+samples, 0);
                        rl.push_back(ar);
                        pl->cut (rl);
-                       pl->shift (pos, -frames, true, ignore_music_glue);
+                       pl->shift (pos, -samples, true, ignore_music_glue);
 
                        XMLNode &after = pl->get_state();
 
@@ -7747,7 +7747,7 @@ Editor::remove_time (framepos_t pos, framecnt_t frames, InsertTimeOption opt,
                                begin_reversible_command (_("remove time"));
                                in_command = true;
                        }
-                       rtav->route ()->shift (pos, -frames);
+                       rtav->route ()->shift (pos, -samples);
                }
        }
 
@@ -7770,39 +7770,39 @@ Editor::remove_time (framepos_t pos, framecnt_t frames, InsertTimeOption opt,
 
                                if (!(*i)->is_mark()) {  // it's a range;  have to handle both start and end
                                        if ((*i)->end() >= pos
-                                       && (*i)->end() < pos+frames
+                                       && (*i)->end() < pos+samples
                                        && (*i)->start() >= pos
-                                       && (*i)->end() < pos+frames) {  // range is completely enclosed;  kill it
+                                       && (*i)->end() < pos+samples) {  // range is completely enclosed;  kill it
                                                moved = true;
                                                loc_kill_list.push_back(*i);
                                        } else {  // only start or end is included, try to do the right thing
                                                // move start before moving end, to avoid trying to move the end to before the start
                                                // if we're removing more time than the length of the range
-                                               if ((*i)->start() >= pos && (*i)->start() < pos+frames) {
+                                               if ((*i)->start() >= pos && (*i)->start() < pos+samples) {
                                                        // start is within cut
                                                        (*i)->set_start (pos, false, true,divisions);  // bring the start marker to the beginning of the cut
                                                        moved = true;
-                                               } else if ((*i)->start() >= pos+frames) {
+                                               } else if ((*i)->start() >= pos+samples) {
                                                        // start (and thus entire range) lies beyond end of cut
-                                                       (*i)->set_start ((*i)->start() - frames, false, true, divisions); // slip the start marker back
+                                                       (*i)->set_start ((*i)->start() - samples, false, true, divisions); // slip the start marker back
                                                        moved = true;
                                                }
-                                               if ((*i)->end() >= pos && (*i)->end() < pos+frames) {
+                                               if ((*i)->end() >= pos && (*i)->end() < pos+samples) {
                                                        // end is inside cut
                                                        (*i)->set_end (pos, false, true, divisions);  // bring the end to the cut
                                                        moved = true;
-                                               } else if ((*i)->end() >= pos+frames) {
+                                               } else if ((*i)->end() >= pos+samples) {
                                                        // end is beyond end of cut
-                                                       (*i)->set_end ((*i)->end() - frames, false, true, divisions); // slip the end marker back
+                                                       (*i)->set_end ((*i)->end() - samples, false, true, divisions); // slip the end marker back
                                                        moved = true;
                                                }
 
                                        }
-                               } else if ((*i)->start() >= pos && (*i)->start() < pos+frames ) {
+                               } else if ((*i)->start() >= pos && (*i)->start() < pos+samples ) {
                                        loc_kill_list.push_back(*i);
                                        moved = true;
                                } else if ((*i)->start() >= pos) {
-                                       (*i)->set_start ((*i)->start() -frames, false, true, divisions);
+                                       (*i)->set_start ((*i)->start() -samples, false, true, divisions);
                                        moved = true;
                                }
 
@@ -7829,7 +7829,7 @@ Editor::remove_time (framepos_t pos, framecnt_t frames, InsertTimeOption opt,
        if (tempo_too) {
                XMLNode& before (_session->tempo_map().get_state());
 
-               if (_session->tempo_map().remove_time (pos, frames) ) {
+               if (_session->tempo_map().remove_time (pos, samples) ) {
                        if (!in_command) {
                                begin_reversible_command (_("remove time"));
                                in_command = true;