interpolation.cc/.h: Spline-Bugfixes: Crash bug at tempos close to 0, wrong calculati...
[ardour.git] / libs / ardour / audio_playlist.cc
index 3eda5b57cfc4e6d8450e59683003afb6d29d2baf..93bdc333f134413a67faf1ab5e2b91ca3c4beb72 100644 (file)
 
 #include <sigc++/bind.h>
 
-#include <ardour/types.h>
-#include <ardour/configuration.h>
-#include <ardour/audioplaylist.h>
-#include <ardour/audioregion.h>
-#include <ardour/crossfade.h>
-#include <ardour/crossfade_compare.h>
-#include <ardour/session.h>
-#include <pbd/enumwriter.h>
+#include "ardour/types.h"
+#include "ardour/configuration.h"
+#include "ardour/audioplaylist.h"
+#include "ardour/audioregion.h"
+#include "ardour/crossfade.h"
+#include "ardour/crossfade_compare.h"
+#include "ardour/session.h"
+#include "pbd/enumwriter.h"
 
 #include "i18n.h"
 
@@ -65,7 +65,6 @@ AudioPlaylist::AudioPlaylist (boost::shared_ptr<const AudioPlaylist> other, stri
                boost::shared_ptr<AudioRegion> ar = boost::dynamic_pointer_cast<AudioRegion>(*in_o);
 
                // We look only for crossfades which begin with the current region, so we don't get doubles
-
                for (Crossfades::const_iterator xfades = other->_crossfades.begin(); xfades != other->_crossfades.end(); ++xfades) {
                        if ((*xfades)->in() == ar) {
                                // We found one! Now copy it!
@@ -114,21 +113,6 @@ AudioPlaylist::~AudioPlaylist ()
        _crossfades.clear ();
 }
 
-void
-AudioPlaylist::copy_regions (RegionList& newlist) const
-{
-       RegionLock rlock (const_cast<Playlist *> (this));
-
-       Playlist::copy_regions (newlist, false);
-
-       for (RegionList::const_iterator i = regions.begin(); i != regions.end(); ++i) {
-               if (!(*i)->is_dependent()) {
-                       newlist.push_back (RegionFactory::RegionFactory::create (*i));
-               }
-       }
-}
-
-
 struct RegionSortByLayer {
     bool operator() (boost::shared_ptr<Region> a, boost::shared_ptr<Region> b) {
            return a->layer() < b->layer();
@@ -141,6 +125,8 @@ AudioPlaylist::read (Sample *buf, Sample *mixdown_buffer, float *gain_buffer, nf
 {
        nframes_t ret = cnt;
        nframes_t end;
+       nframes_t read_frames;
+       nframes_t skip_frames;
 
        /* optimizing this memset() away involves a lot of conditionals
           that may well cause more of a hit due to cache misses 
@@ -161,17 +147,27 @@ AudioPlaylist::read (Sample *buf, Sample *mixdown_buffer, float *gain_buffer, nf
           its OK to block (for short intervals).
        */
 
-       Glib::Mutex::Lock rm (region_lock);
+       Glib::RecMutex::Lock rm (region_lock);
 
        end =  start + cnt - 1;
+       read_frames = 0;
+       skip_frames = 0;
+       _read_data_count = 0;
 
        _read_data_count = 0;
 
+       RegionList* rlist = regions_to_read (start, start+cnt);
+
+       if (rlist->empty()) {
+               delete rlist;
+               return cnt;
+       }
+
        map<uint32_t,vector<boost::shared_ptr<Region> > > relevant_regions;
        map<uint32_t,vector<boost::shared_ptr<Crossfade> > > relevant_xfades;
        vector<uint32_t> relevant_layers;
 
-       for (RegionList::iterator i = regions.begin(); i != regions.end(); ++i) {
+       for (RegionList::iterator i = rlist->begin(); i != rlist->end(); ++i) {
                if ((*i)->coverage (start, end) != OverlapNone) {
                        relevant_regions[(*i)->layer()].push_back (*i);
                        relevant_layers.push_back ((*i)->layer());
@@ -203,7 +199,7 @@ AudioPlaylist::read (Sample *buf, Sample *mixdown_buffer, float *gain_buffer, nf
                for (vector<boost::shared_ptr<Region> >::iterator i = r.begin(); i != r.end(); ++i) {
                        boost::shared_ptr<AudioRegion> ar = boost::dynamic_pointer_cast<AudioRegion>(*i);
                        assert(ar);
-                       ar->read_at (buf, mixdown_buffer, gain_buffer, start, cnt, chan_n);
+                       ar->read_at (buf, mixdown_buffer, gain_buffer, start, cnt, chan_n, read_frames, skip_frames);
                        _read_data_count += ar->read_data_count();
                }
                
@@ -216,6 +212,7 @@ AudioPlaylist::read (Sample *buf, Sample *mixdown_buffer, float *gain_buffer, nf
                }
        }
 
+       delete rlist;
        return ret;
 }
 
@@ -234,11 +231,11 @@ AudioPlaylist::remove_dependents (boost::shared_ptr<Region> region)
                      << endmsg;
                return;
        }
-       
-       for (RegionList::iterator i = regions.begin(); i != regions.end(); ) {
+
+       for (Crossfades::iterator i = _crossfades.begin(); i != _crossfades.end(); ) {
                
-               if ((*i)->depends_on (r)) {
-                       i = regions.erase (i);
+               if ((*i)->involves (r)) {
+                       i = _crossfades.erase (i);
                } else {
                        ++i;
                }
@@ -277,22 +274,23 @@ AudioPlaylist::refresh_dependents (boost::shared_ptr<Region> r)
                return;
        }
 
-       for (RegionList::iterator x = regions.begin(); x != regions.end();) {
-               
-               RegionList::iterator tmp;
+       for (Crossfades::iterator x = _crossfades.begin(); x != _crossfades.end();) {
+
+               Crossfades::iterator tmp;
                
                tmp = x;
                ++tmp;
 
                /* only update them once */
 
-               if ((*x)->depends_on (ar)) {
+               if ((*x)->involves (ar)) {
 
-                       if (find (updated.begin(), updated.end(), *x) == updated.end()) {
-                               try { 
-                                       if ((*x)->refresh ()) {
-                                               updated.insert (*x);
-                                       }
+                       pair<set<boost::shared_ptr<Crossfade> >::iterator, bool> const u = updated.insert (*x);
+                       
+                       if (u.second) {
+                               /* x was successfully inserted into the set, so it has not already been updated */
+                               try {
+                                       (*x)->refresh ();
                                }
 
                                catch (Crossfade::NoCrossfadeHere& err) {
@@ -312,43 +310,35 @@ AudioPlaylist::finalize_split_region (boost::shared_ptr<Region> o, boost::shared
        boost::shared_ptr<AudioRegion> left  = boost::dynamic_pointer_cast<AudioRegion>(l);
        boost::shared_ptr<AudioRegion> right = boost::dynamic_pointer_cast<AudioRegion>(r);
 
-       for (RegionList::iterator x = regions.begin(); x !=regions.end();) {
+       for (Crossfades::iterator x = _crossfades.begin(); x != _crossfades.end();) {
                Crossfades::iterator tmp;
-               boost::shared_ptr<Crossfade> xfade = boost::dynamic_pointer_cast<Crossfade>(*x);
-
-               if (!xfade) {
-                       ++x;
-                       continue;
-               }
-
                tmp = x;
                ++tmp;
 
                boost::shared_ptr<Crossfade> fade;
                
-               if (xfade->_in == orig) {
-                       if (! xfade->covers(right->position())) {
-                               fade = boost::shared_ptr<Crossfade> (new Crossfade (*xfade, left, xfade->_out));
+               if ((*x)->_in == orig) {
+                       if (! (*x)->covers(right->position())) {
+                               fade = boost::shared_ptr<Crossfade> (new Crossfade (*x, left, (*x)->_out));
                        } else {
                                // Overlap, the crossfade is copied on the left side of the right region instead
-                               fade = boost::shared_ptr<Crossfade> (new Crossfade (*xfade, right, xfade->_out));
+                               fade = boost::shared_ptr<Crossfade> (new Crossfade (*x, right, (*x)->_out));
                        }
                }
                
-               if (xfade->_out == orig) {
-                       if (! xfade->covers(right->position())) {
-                               fade = boost::shared_ptr<Crossfade> (new Crossfade (*xfade, xfade->_in, right));
+               if ((*x)->_out == orig) {
+                       if (! (*x)->covers(right->position())) {
+                               fade = boost::shared_ptr<Crossfade> (new Crossfade (*x, (*x)->_in, right));
                        } else {
                                // Overlap, the crossfade is copied on the right side of the left region instead
-                               fade = boost::shared_ptr<Crossfade> (new Crossfade (*xfade, xfade->_in, left));
+                               fade = boost::shared_ptr<Crossfade> (new Crossfade (*x, (*x)->_in, left));
                        }
                }
                
                if (fade) {
-                       regions.erase (*x);
+                       _crossfades.remove (*x);
                        add_crossfade (fade);
                }
-
                x = tmp;
        }
 }
@@ -361,6 +351,7 @@ AudioPlaylist::check_dependents (boost::shared_ptr<Region> r, bool norefresh)
        boost::shared_ptr<AudioRegion> top;
        boost::shared_ptr<AudioRegion> bottom;
        boost::shared_ptr<Crossfade>   xfade;
+       RegionList*  touched_regions;
 
        if (in_set_state || in_partition) {
                return;
@@ -377,7 +368,7 @@ AudioPlaylist::check_dependents (boost::shared_ptr<Region> r, bool norefresh)
        }
 
 
-       if (!Config->get_auto_xfade()) {
+       if (!_session.config.get_auto_xfade()) {
                return;
        }
 
@@ -404,7 +395,9 @@ AudioPlaylist::check_dependents (boost::shared_ptr<Region> r, bool norefresh)
                        bottom = region;
                }
 
-
+               if (!top->opaque()) {
+                       continue;
+               }
 
                OverlapType c = top->coverage (bottom->position(), bottom->last_frame());
 
@@ -420,7 +413,7 @@ AudioPlaylist::check_dependents (boost::shared_ptr<Region> r, bool norefresh)
                                break;
 
                        case OverlapExternal:
-
                                /*     [ -------- top ------- ]
                                 * {=========== bottom =============}
                                 */
@@ -433,11 +426,15 @@ AudioPlaylist::check_dependents (boost::shared_ptr<Region> r, bool norefresh)
                                */
                                
                                xfade_length = min ((nframes_t) 720, top->length());
-                               
-                               xfade = boost::shared_ptr<Crossfade> (new Crossfade (top, bottom, xfade_length, top->first_frame(), StartOfIn));
-                               add_crossfade (xfade);
+
+                               if (top_region_at (top->first_frame()) == top) {
+                                       xfade = boost::shared_ptr<Crossfade> (new Crossfade (top, bottom, xfade_length, top->first_frame(), StartOfIn));
+                                       add_crossfade (xfade);
+                               }
 
                                if (top_region_at (top->last_frame() - 1) == top) {
+
                                        /* 
                                           only add a fade out if there is no region on top of the end of 'top' (which 
                                           would cover it).
@@ -447,9 +444,58 @@ AudioPlaylist::check_dependents (boost::shared_ptr<Region> r, bool norefresh)
                                        add_crossfade (xfade);
                                }
                                break;
-                               
+                       case OverlapStart:
+
+                               /*                   { ==== top ============ } 
+                                *   [---- bottom -------------------] 
+                                */
+
+                               if (_session.config.get_xfade_model() == FullCrossfade) {
+                                       touched_regions = regions_touched (top->first_frame(), bottom->last_frame());
+                                       if (touched_regions->size() <= 2) {
+                                               xfade = boost::shared_ptr<Crossfade> (new Crossfade (region, other, _session.config.get_xfade_model(), _session.config.get_xfades_active()));
+                                               add_crossfade (xfade);
+                                       }
+                               } else {
+
+                                       touched_regions = regions_touched (top->first_frame(), 
+                                                                          top->first_frame() + min ((nframes_t)_session.config.get_short_xfade_seconds() * _session.frame_rate(), 
+                                                                                                    top->length()));
+                                       if (touched_regions->size() <= 2) {
+                                               xfade = boost::shared_ptr<Crossfade> (new Crossfade (region, other, _session.config.get_xfade_model(), _session.config.get_xfades_active()));
+                                               add_crossfade (xfade);
+                                       }
+                               }
+                               break;
+                       case OverlapEnd:
+
+
+                               /* [---- top ------------------------] 
+                                *                { ==== bottom ============ } 
+                                */ 
+
+                               if (_session.config.get_xfade_model() == FullCrossfade) {
+
+                                       touched_regions = regions_touched (bottom->first_frame(), top->last_frame());
+                                       if (touched_regions->size() <= 2) {
+                                               xfade = boost::shared_ptr<Crossfade> (new Crossfade (region, other, 
+                                                                                                    _session.config.get_xfade_model(), _session.config.get_xfades_active()));
+                                               add_crossfade (xfade);
+                                       }
+
+                               } else {
+                                       touched_regions = regions_touched (bottom->first_frame(), 
+                                                                          bottom->first_frame() + min ((nframes_t)_session.config.get_short_xfade_seconds() * _session.frame_rate(), 
+                                                                                                       bottom->length()));
+                                       if (touched_regions->size() <= 2) {
+                                               xfade = boost::shared_ptr<Crossfade> (new Crossfade (region, other, _session.config.get_xfade_model(), _session.config.get_xfades_active()));
+                                               add_crossfade (xfade);
+                                       }
+                               }
+                               break;
                        default:
-                               xfade = boost::shared_ptr<Crossfade> (new Crossfade (region, other, Config->get_xfade_model(), Config->get_xfades_active()));
+                               xfade = boost::shared_ptr<Crossfade> (new Crossfade (region, other, 
+                                                                                    _session.config.get_xfade_model(), _session.config.get_xfades_active()));
                                add_crossfade (xfade);
                        }
                }
@@ -466,29 +512,25 @@ AudioPlaylist::check_dependents (boost::shared_ptr<Region> r, bool norefresh)
 }
 
 void
-AudioPlaylist::add_crossfade (boost::shared_ptr<Crossfade> new_xfade)
+AudioPlaylist::add_crossfade (boost::shared_ptr<Crossfade> xfade)
 {
-       RegionList::iterator r;
-       boost::shared_ptr<Crossfade> xfade;
+       Crossfades::iterator ci;
 
-       for (r = regions.begin(); r != regions.end(); ++r) {
-               
-               if ((xfade = boost::dynamic_pointer_cast<Crossfade>(*r))) {
-                       if (*xfade == *new_xfade) { // Crossfade::operator==()
-                               break;
-                       }
+       for (ci = _crossfades.begin(); ci != _crossfades.end(); ++ci) {
+               if (*(*ci) == *xfade) { // Crossfade::operator==()
+                       break;
                }
        }
        
-       if (r != regions.end()) {
+       if (ci != _crossfades.end()) {
                // it will just go away
        } else {
-               add_region_internal (new_xfade);
+               _crossfades.push_back (xfade);
 
-               new_xfade->Invalidated.connect (mem_fun (*this, &AudioPlaylist::crossfade_invalidated));
-               new_xfade->StateChanged.connect (mem_fun (*this, &AudioPlaylist::crossfade_changed));
+               xfade->Invalidated.connect (mem_fun (*this, &AudioPlaylist::crossfade_invalidated));
+               xfade->StateChanged.connect (mem_fun (*this, &AudioPlaylist::crossfade_changed));
 
-               notify_crossfade_added (new_xfade);
+               notify_crossfade_added (xfade);
        }
 }
        
@@ -497,6 +539,7 @@ void AudioPlaylist::notify_crossfade_added (boost::shared_ptr<Crossfade> x)
        if (g_atomic_int_get(&block_notifications)) {
                _pending_xfade_adds.insert (_pending_xfade_adds.end(), x);
        } else {
+
                NewCrossfade (x); /* EMIT SIGNAL */
        }
 }
@@ -504,12 +547,15 @@ void AudioPlaylist::notify_crossfade_added (boost::shared_ptr<Crossfade> x)
 void
 AudioPlaylist::crossfade_invalidated (boost::shared_ptr<Region> r)
 {
+       Crossfades::iterator i;
        boost::shared_ptr<Crossfade> xfade = boost::dynamic_pointer_cast<Crossfade> (r);
-       
+
        xfade->in()->resume_fade_in ();
        xfade->out()->resume_fade_out ();
 
-       remove_region_internal (r);
+       if ((i = find (_crossfades.begin(), _crossfades.end(), xfade)) != _crossfades.end()) {
+               _crossfades.erase (i);
+       }
 }
 
 int
@@ -530,14 +576,13 @@ AudioPlaylist::set_state (const XMLNode& node)
 
                child = *niter;
 
-               if (child->name() != Crossfade::node_name()) {
+               if (child->name() != "Crossfade") {
                        continue;
                }
-               
+
                try {
-                       boost::shared_ptr<Crossfade> xfade = boost::dynamic_pointer_cast<Crossfade> (RegionFactory::create (*((const Playlist *) this), *child));
-                       assert (xfade);
-                       add_region_internal (xfade);
+                       boost::shared_ptr<Crossfade> xfade = boost::shared_ptr<Crossfade> (new Crossfade (*((const Playlist *)this), *child));
+                       _crossfades.push_back (xfade);
                        xfade->Invalidated.connect (mem_fun (*this, &AudioPlaylist::crossfade_invalidated));
                        xfade->StateChanged.connect (mem_fun (*this, &AudioPlaylist::crossfade_changed));
                        NewCrossfade(xfade);
@@ -560,9 +605,24 @@ AudioPlaylist::set_state (const XMLNode& node)
 void
 AudioPlaylist::clear (bool with_signals)
 {
+       _crossfades.clear ();
        Playlist::clear (with_signals);
 }
 
+XMLNode&
+AudioPlaylist::state (bool full_state)
+{
+       XMLNode& node = Playlist::state (full_state);
+
+       if (full_state) {
+               for (Crossfades::iterator i = _crossfades.begin(); i != _crossfades.end(); ++i) {
+                       node.add_child_nocopy ((*i)->get_state());
+               }
+       }
+       
+       return node;
+}
+
 void
 AudioPlaylist::dump () const
 {
@@ -571,32 +631,33 @@ AudioPlaylist::dump () const
 
        cerr << "Playlist \"" << _name << "\" " << endl
             << regions.size() << " regions "
+            << _crossfades.size() << " crossfades"
             << endl;
 
        for (RegionList::const_iterator i = regions.begin(); i != regions.end(); ++i) {
                r = *i;
+               cerr << "  " << r->name() << " @ " << r << " [" 
+                    << r->start() << "+" << r->length() 
+                    << "] at " 
+                    << r->position()
+                    << " on layer "
+                    << r->layer ()
+                    << endl;
+       }
 
-               if ((x = boost::dynamic_pointer_cast<Crossfade> (r))) {
-                       cerr << "  xfade [" 
-                            << x->out()->name()
-                            << ','
-                            << x->in()->name()
-                            << " @ "
-                            << x->position()
-                            << " length = " 
-                            << x->length ()
-                            << " active ? "
-                            << (x->active() ? "yes" : "no")
-                            << endl;
-               } else {
-                       cerr << "  " << r->name() << " @ " << r << " [" 
-                            << r->start() << "+" << r->length() 
-                            << "] at " 
-                            << r->position()
-                            << " on layer "
-                            << r->layer ()
-                            << endl;
-               }
+       for (Crossfades::const_iterator i = _crossfades.begin(); i != _crossfades.end(); ++i) {
+               x = *i;
+               cerr << "  xfade [" 
+                    << x->out()->name()
+                    << ','
+                    << x->in()->name()
+                    << " @ "
+                    << x->position()
+                    << " length = " 
+                    << x->length ()
+                    << " active ? "
+                    << (x->active() ? "yes" : "no")
+                    << endl;
        }
 }
 
@@ -605,6 +666,8 @@ AudioPlaylist::destroy_region (boost::shared_ptr<Region> region)
 {
        boost::shared_ptr<AudioRegion> r = boost::dynamic_pointer_cast<AudioRegion> (region);
        bool changed = false;
+       Crossfades::iterator c, ctmp;
+       set<boost::shared_ptr<Crossfade> > unique_xfades;
 
        if (r == 0) {
                fatal << _("programming error: non-audio Region passed to remove_overlap in audio playlist")
@@ -613,7 +676,7 @@ AudioPlaylist::destroy_region (boost::shared_ptr<Region> region)
                return false;
        }
 
-       { 
+       {
                RegionLock rlock (this);
 
                for (RegionList::iterator i = regions.begin(); i != regions.end(); ) {
@@ -624,9 +687,6 @@ AudioPlaylist::destroy_region (boost::shared_ptr<Region> region)
                        if ((*i) == region) {
                                regions.erase (i);
                                changed = true;
-                       } else if ((*i)->depends_on (region)) {
-                               regions.erase (i);
-                               changed = true;
                        }
                        
                        i = tmp;
@@ -640,9 +700,6 @@ AudioPlaylist::destroy_region (boost::shared_ptr<Region> region)
                        if ((*x) == region) {
                                all_regions.erase (x);
                                changed = true;
-                       } else if ((*x)->depends_on (region)) {
-                               all_regions.erase (x);
-                               changed = true;
                        }
                        
                        x = xtmp;
@@ -651,6 +708,18 @@ AudioPlaylist::destroy_region (boost::shared_ptr<Region> region)
                region->set_playlist (boost::shared_ptr<Playlist>());
        }
 
+       for (c = _crossfades.begin(); c != _crossfades.end(); ) {
+               ctmp = c;
+               ++ctmp;
+
+               if ((*c)->involves (r)) {
+                       unique_xfades.insert (*c);
+                       _crossfades.erase (c);
+               }
+               
+               c = ctmp;
+       }
+
        if (changed) {
                /* overload this, it normally means "removed", not destroyed */
                notify_region_removed (region);
@@ -660,7 +729,7 @@ AudioPlaylist::destroy_region (boost::shared_ptr<Region> region)
 }
 
 void
-AudioPlaylist::crossfade_changed (Change ignored)
+AudioPlaylist::crossfade_changed (Change)
 {
        if (in_flush || in_set_state) {
                return;
@@ -700,3 +769,28 @@ AudioPlaylist::region_changed (Change what_changed, boost::shared_ptr<Region> re
        return true; 
 }
 
+void
+AudioPlaylist::crossfades_at (nframes_t frame, Crossfades& clist)
+{
+       RegionLock rlock (this);
+
+       for (Crossfades::iterator i = _crossfades.begin(); i != _crossfades.end(); ++i) {
+               nframes_t start, end;
+
+               start = (*i)->position();
+               end = start + (*i)->overlap_length(); // not length(), important difference
+
+               if (frame >= start && frame <= end) {
+                       clist.push_back (*i);
+               } 
+       }
+}
+
+void
+AudioPlaylist::foreach_crossfade (sigc::slot<void, boost::shared_ptr<Crossfade> > s)
+{
+       RegionLock rl (this, false);
+       for (Crossfades::iterator i = _crossfades.begin(); i != _crossfades.end(); ++i) {
+               s (*i);
+       }
+}