cleanup up cleanup at session destruction; clarify the meaning of 3 signals (DropRefe...
[ardour.git] / libs / ardour / audio_playlist.cc
index 246384689e0f501c2118afc117ca50da3695e763..1ecba28653f615f44838ed73c4a0c83c42bd8a45 100644 (file)
@@ -1,5 +1,5 @@
 /*
-    Copyright (C) 2003 Paul Davis 
+    Copyright (C) 2003 Paul Davis
 
     This program is free software; you can redistribute it and/or modify
     it under the terms of the GNU General Public License as published by
 
 #include <cstdlib>
 
-#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"
 
 using namespace ARDOUR;
-using namespace sigc;
 using namespace std;
 using namespace PBD;
 
@@ -46,7 +44,7 @@ AudioPlaylist::AudioPlaylist (Session& session, const XMLNode& node, bool hidden
        assert(!prop || DataType(prop->value()) == DataType::AUDIO);
 
        in_set_state++;
-       set_state (node);
+       set_state (node, Stateful::loading_state_version);
        in_set_state--;
 }
 
@@ -73,9 +71,9 @@ AudioPlaylist::AudioPlaylist (boost::shared_ptr<const AudioPlaylist> other, stri
                                RegionList::const_iterator out_n = regions.begin();
 
                                while (out_o != other->regions.end()) {
-                                       
+
                                        boost::shared_ptr<AudioRegion>ar2 = boost::dynamic_pointer_cast<AudioRegion>(*out_o);
-                                       
+
                                        if ((*xfades)->out() == ar2) {
                                                boost::shared_ptr<AudioRegion>in  = boost::dynamic_pointer_cast<AudioRegion>(*in_n);
                                                boost::shared_ptr<AudioRegion>out = boost::dynamic_pointer_cast<AudioRegion>(*out_n);
@@ -83,7 +81,7 @@ AudioPlaylist::AudioPlaylist (boost::shared_ptr<const AudioPlaylist> other, stri
                                                add_crossfade(new_fade);
                                                break;
                                        }
-                                       
+
                                        out_o++;
                                        out_n++;
                                }
@@ -104,12 +102,6 @@ AudioPlaylist::AudioPlaylist (boost::shared_ptr<const AudioPlaylist> other, nfra
 
 AudioPlaylist::~AudioPlaylist ()
 {
-       GoingAway (); /* EMIT SIGNAL */
-
-       /* drop connections to signals */
-
-       notify_callbacks ();
-       
        _crossfades.clear ();
 }
 
@@ -125,11 +117,13 @@ 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 
+          that may well cause more of a hit due to cache misses
           and related stuff than just doing this here.
-          
+
           it would be great if someone could measure this
           at some point.
 
@@ -141,21 +135,31 @@ AudioPlaylist::read (Sample *buf, Sample *mixdown_buffer, float *gain_buffer, nf
 
        memset (buf, 0, sizeof (Sample) * cnt);
 
-       /* this function is never called from a realtime thread, so 
+       /* this function is never called from a realtime thread, so
           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());
@@ -187,10 +191,10 @@ 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();
                }
-               
+
                for (vector<boost::shared_ptr<Crossfade> >::iterator i = x.begin(); i != x.end(); ++i) {
                        (*i)->read_at (buf, mixdown_buffer, gain_buffer, start, cnt, chan_n);
 
@@ -200,6 +204,7 @@ AudioPlaylist::read (Sample *buf, Sample *mixdown_buffer, float *gain_buffer, nf
                }
        }
 
+       delete rlist;
        return ret;
 }
 
@@ -212,7 +217,7 @@ AudioPlaylist::remove_dependents (boost::shared_ptr<Region> region)
        if (in_set_state) {
                return;
        }
-       
+
        if (r == 0) {
                fatal << _("programming error: non-audio Region passed to remove_overlap in audio playlist")
                      << endmsg;
@@ -220,7 +225,7 @@ AudioPlaylist::remove_dependents (boost::shared_ptr<Region> region)
        }
 
        for (Crossfades::iterator i = _crossfades.begin(); i != _crossfades.end(); ) {
-               
+
                if ((*i)->involves (r)) {
                        i = _crossfades.erase (i);
                } else {
@@ -247,7 +252,7 @@ AudioPlaylist::flush_notifications ()
        }
 
        _pending_xfade_adds.clear ();
-       
+
        in_flush = false;
 }
 
@@ -264,7 +269,7 @@ AudioPlaylist::refresh_dependents (boost::shared_ptr<Region> r)
        for (Crossfades::iterator x = _crossfades.begin(); x != _crossfades.end();) {
 
                Crossfades::iterator tmp;
-               
+
                tmp = x;
                ++tmp;
 
@@ -272,11 +277,12 @@ AudioPlaylist::refresh_dependents (boost::shared_ptr<Region> r)
 
                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) {
@@ -302,7 +308,7 @@ AudioPlaylist::finalize_split_region (boost::shared_ptr<Region> o, boost::shared
                ++tmp;
 
                boost::shared_ptr<Crossfade> fade;
-               
+
                if ((*x)->_in == orig) {
                        if (! (*x)->covers(right->position())) {
                                fade = boost::shared_ptr<Crossfade> (new Crossfade (*x, left, (*x)->_out));
@@ -311,7 +317,7 @@ AudioPlaylist::finalize_split_region (boost::shared_ptr<Region> o, boost::shared
                                fade = boost::shared_ptr<Crossfade> (new Crossfade (*x, right, (*x)->_out));
                        }
                }
-               
+
                if ((*x)->_out == orig) {
                        if (! (*x)->covers(right->position())) {
                                fade = boost::shared_ptr<Crossfade> (new Crossfade (*x, (*x)->_in, right));
@@ -320,7 +326,7 @@ AudioPlaylist::finalize_split_region (boost::shared_ptr<Region> o, boost::shared
                                fade = boost::shared_ptr<Crossfade> (new Crossfade (*x, (*x)->_in, left));
                        }
                }
-               
+
                if (fade) {
                        _crossfades.remove (*x);
                        add_crossfade (fade);
@@ -337,6 +343,7 @@ 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 = 0;
 
        if (in_set_state || in_partition) {
                return;
@@ -353,7 +360,7 @@ AudioPlaylist::check_dependents (boost::shared_ptr<Region> r, bool norefresh)
        }
 
 
-       if (!Config->get_auto_xfade()) {
+       if (!_session.config.get_auto_xfade()) {
                return;
        }
 
@@ -370,7 +377,7 @@ AudioPlaylist::check_dependents (boost::shared_ptr<Region> r, bool norefresh)
                if (other->muted() || region->muted()) {
                        continue;
                }
-               
+
 
                if (other->layer() < region->layer()) {
                        top = region;
@@ -380,10 +387,15 @@ 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());
 
+               delete touched_regions;
+               touched_regions = 0;
+
                try {
                        switch (c) {
                        case OverlapNone:
@@ -400,32 +412,85 @@ AudioPlaylist::check_dependents (boost::shared_ptr<Region> r, bool norefresh)
                                /*     [ -------- top ------- ]
                                 * {=========== bottom =============}
                                 */
-                               
+
                                /* to avoid discontinuities at the region boundaries of an internal
                                   overlap (this region is completely within another), we create
                                   two hidden crossfades at each boundary. this is not dependent
                                   on the auto-xfade option, because we require it as basic
                                   audio engineering.
                                */
-                               
+
                                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 
+
+                                       /*
+                                          only add a fade out if there is no region on top of the end of 'top' (which
                                           would cover it).
                                        */
-                                       
+
                                        xfade = boost::shared_ptr<Crossfade> (new Crossfade (bottom, top, xfade_length, top->last_frame() - xfade_length, EndOfOut));
                                        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);
                        }
                }
@@ -433,12 +498,14 @@ AudioPlaylist::check_dependents (boost::shared_ptr<Region> r, bool norefresh)
                catch (failed_constructor& err) {
                        continue;
                }
-               
+
                catch (Crossfade::NoCrossfadeHere& err) {
                        continue;
                }
-               
+
        }
+
+       delete touched_regions;
 }
 
 void
@@ -451,19 +518,19 @@ AudioPlaylist::add_crossfade (boost::shared_ptr<Crossfade> xfade)
                        break;
                }
        }
-       
+
        if (ci != _crossfades.end()) {
                // it will just go away
        } else {
                _crossfades.push_back (xfade);
 
-               xfade->Invalidated.connect (mem_fun (*this, &AudioPlaylist::crossfade_invalidated));
-               xfade->StateChanged.connect (mem_fun (*this, &AudioPlaylist::crossfade_changed));
+               xfade->Invalidated.connect_same_thread (*this, boost::bind (&AudioPlaylist::crossfade_invalidated, this, _1));
+               xfade->StateChanged.connect_same_thread (*this, boost::bind (&AudioPlaylist::crossfade_changed, this, _1));
 
                notify_crossfade_added (xfade);
        }
 }
-       
+
 void AudioPlaylist::notify_crossfade_added (boost::shared_ptr<Crossfade> x)
 {
        if (g_atomic_int_get(&block_notifications)) {
@@ -488,16 +555,17 @@ AudioPlaylist::crossfade_invalidated (boost::shared_ptr<Region> r)
 }
 
 int
-AudioPlaylist::set_state (const XMLNode& node)
+AudioPlaylist::set_state (const XMLNode& node, int version)
 {
        XMLNode *child;
        XMLNodeList nlist;
        XMLNodeConstIterator niter;
 
        in_set_state++;
-       freeze ();
 
-       Playlist::set_state (node);
+       Playlist::set_state (node, version);
+
+       freeze ();
 
        nlist = node.children();
 
@@ -512,14 +580,14 @@ AudioPlaylist::set_state (const XMLNode& node)
                try {
                        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));
+                       xfade->Invalidated.connect_same_thread (*this, boost::bind (&AudioPlaylist::crossfade_invalidated, this, _1));
+                       xfade->StateChanged.connect_same_thread (*this, boost::bind (&AudioPlaylist::crossfade_changed, this, _1));
                        NewCrossfade(xfade);
                }
-               
+
                catch (failed_constructor& err) {
                        //      cout << string_compose (_("could not create crossfade object in playlist %1"),
-                       //        _name) 
+                       //        _name)
                        //    << endl;
                        continue;
                }
@@ -548,7 +616,7 @@ AudioPlaylist::state (bool full_state)
                        node.add_child_nocopy ((*i)->get_state());
                }
        }
-       
+
        return node;
 }
 
@@ -565,9 +633,9 @@ AudioPlaylist::dump () const
 
        for (RegionList::const_iterator i = regions.begin(); i != regions.end(); ++i) {
                r = *i;
-               cerr << "  " << r->name() << " @ " << r << " [" 
-                    << r->start() << "+" << r->length() 
-                    << "] at " 
+               cerr << "  " << r->name() << " @ " << r << " ["
+                    << r->start() << "+" << r->length()
+                    << "] at "
                     << r->position()
                     << " on layer "
                     << r->layer ()
@@ -576,13 +644,13 @@ AudioPlaylist::dump () const
 
        for (Crossfades::const_iterator i = _crossfades.begin(); i != _crossfades.end(); ++i) {
                x = *i;
-               cerr << "  xfade [" 
+               cerr << "  xfade ["
                     << x->out()->name()
                     << ','
                     << x->in()->name()
                     << " @ "
                     << x->position()
-                    << " length = " 
+                    << " length = "
                     << x->length ()
                     << " active ? "
                     << (x->active() ? "yes" : "no")
@@ -605,19 +673,19 @@ AudioPlaylist::destroy_region (boost::shared_ptr<Region> region)
                return false;
        }
 
-       { 
+       {
                RegionLock rlock (this);
 
                for (RegionList::iterator i = regions.begin(); i != regions.end(); ) {
-                       
+
                        RegionList::iterator tmp = i;
                        ++tmp;
-                       
+
                        if ((*i) == region) {
                                regions.erase (i);
                                changed = true;
                        }
-                       
+
                        i = tmp;
                }
 
@@ -625,12 +693,12 @@ AudioPlaylist::destroy_region (boost::shared_ptr<Region> region)
 
                        set<boost::shared_ptr<Region> >::iterator xtmp = x;
                        ++xtmp;
-                       
+
                        if ((*x) == region) {
                                all_regions.erase (x);
                                changed = true;
                        }
-                       
+
                        x = xtmp;
                }
 
@@ -645,7 +713,7 @@ AudioPlaylist::destroy_region (boost::shared_ptr<Region> region)
                        unique_xfades.insert (*c);
                        _crossfades.erase (c);
                }
-               
+
                c = ctmp;
        }
 
@@ -658,7 +726,7 @@ 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;
@@ -695,7 +763,7 @@ AudioPlaylist::region_changed (Change what_changed, boost::shared_ptr<Region> re
                notify_modified ();
        }
 
-       return true; 
+       return true;
 }
 
 void
@@ -711,7 +779,15 @@ AudioPlaylist::crossfades_at (nframes_t frame, Crossfades& clist)
 
                if (frame >= start && frame <= end) {
                        clist.push_back (*i);
-               } 
+               }
        }
 }
 
+void
+AudioPlaylist::foreach_crossfade (boost::function<void (boost::shared_ptr<Crossfade>)> s)
+{
+       RegionLock rl (this, false);
+       for (Crossfades::iterator i = _crossfades.begin(); i != _crossfades.end(); ++i) {
+               s (*i);
+       }
+}