#include <boost/lexical_cast.hpp>
+#include "pbd/convert.h"
#include "pbd/failed_constructor.h"
#include "pbd/stateful_diff_command.h"
#include "pbd/xml++.h"
-#include "pbd/stacktrace.h"
#include "ardour/debug.h"
#include "ardour/playlist.h"
#include "ardour/playlist_factory.h"
#include "ardour/transient_detector.h"
#include "ardour/session_playlists.h"
+#include "ardour/source_factory.h"
#include "i18n.h"
void
Playlist::make_property_quarks ()
{
- Properties::regions.property_id = g_quark_from_static_string (X_("regions"));
- DEBUG_TRACE (DEBUG::Properties, string_compose ("quark for regions = %1\n", Properties::regions.property_id));
+ Properties::regions.property_id = g_quark_from_static_string (X_("regions"));
+ DEBUG_TRACE (DEBUG::Properties, string_compose ("quark for regions = %1\n",
+ Properties::regions.property_id));
}
RegionListProperty::RegionListProperty (Playlist& pl)
- : SequenceProperty<std::list<boost::shared_ptr<Region> > > (Properties::regions.property_id, boost::bind (&Playlist::update, &pl, _1))
- , _playlist (pl)
+ : SequenceProperty<std::list<boost::shared_ptr<Region> > > (Properties::regions.property_id, boost::bind (&Playlist::update, &pl, _1))
+ , _playlist (pl)
{
}
PBD::ID id (prop->value ());
- boost::shared_ptr<Region> ret = _playlist.region_by_id (id);
+ boost::shared_ptr<Region> ret = _playlist.region_by_id (id);
- if (!ret) {
- ret = RegionFactory::region_by_id (id);
- }
+ if (!ret) {
+ ret = RegionFactory::region_by_id (id);
+ }
- return ret;
+ return ret;
}
Playlist::Playlist (Session& sess, string nom, DataType type, bool hide)
: SessionObject(sess, nom)
- , regions (*this)
+ , regions (*this)
, _type(type)
{
init (hide);
first_set_state = false;
_name = nom;
- _set_sort_id ();
-
+ _set_sort_id ();
}
Playlist::Playlist (Session& sess, const XMLNode& node, DataType type, bool hide)
: SessionObject(sess, "unnamed playlist")
- , regions (*this)
- , _type(type)
-
+ , regions (*this)
+ , _type(type)
{
#ifndef NDEBUG
const XMLProperty* prop = node.property("type");
init (hide);
_name = "unnamed"; /* reset by set_state */
- _set_sort_id ();
+ _set_sort_id ();
/* set state called by derived class */
}
Playlist::Playlist (boost::shared_ptr<const Playlist> other, string namestr, bool hide)
: SessionObject(other->_session, namestr)
- , regions (*this)
+ , regions (*this)
, _type(other->_type)
, _orig_diskstream_id (other->_orig_diskstream_id)
{
Playlist::Playlist (boost::shared_ptr<const Playlist> other, framepos_t start, framecnt_t cnt, string str, bool hide)
: SessionObject(other->_session, str)
- , regions (*this)
+ , regions (*this)
, _type(other->_type)
, _orig_diskstream_id (other->_orig_diskstream_id)
{
void
Playlist::init (bool hide)
{
- add_property (regions);
- _xml_node_name = X_("Playlist");
+ add_property (regions);
+ _xml_node_name = X_("Playlist");
g_atomic_int_set (&block_notifications, 0);
g_atomic_int_set (&ignore_state_changes, 0);
_shuffling = false;
_nudging = false;
in_set_state = 0;
- in_update = false;
+ in_update = false;
_edit_mode = Config->get_edit_mode();
in_flush = false;
in_partition = false;
layer_op_counter = 0;
freeze_length = 0;
_explicit_relayering = false;
+ _combine_ops = 0;
_session.history().BeginUndoRedo.connect_same_thread (*this, boost::bind (&Playlist::begin_undo, this));
_session.history().EndUndoRedo.connect_same_thread (*this, boost::bind (&Playlist::end_undo, this));
void
Playlist::_set_sort_id ()
{
- /*
- Playlists are given names like <track name>.<id>
- or <track name>.<edit group name>.<id> where id
- is an integer. We extract the id and sort by that.
- */
+ /*
+ Playlists are given names like <track name>.<id>
+ or <track name>.<edit group name>.<id> where id
+ is an integer. We extract the id and sort by that.
+ */
- size_t dot_position = _name.val().find_last_of(".");
+ size_t dot_position = _name.val().find_last_of(".");
- if (dot_position == string::npos) {
- _sort_id = 0;
- } else {
- string t = _name.val().substr(dot_position + 1);
+ if (dot_position == string::npos) {
+ _sort_id = 0;
+ } else {
+ string t = _name.val().substr(dot_position + 1);
- try {
- _sort_id = boost::lexical_cast<int>(t);
- }
+ try {
+ _sort_id = boost::lexical_cast<int>(t);
+ }
- catch (boost::bad_lexical_cast e) {
- _sort_id = 0;
- }
- }
+ catch (boost::bad_lexical_cast e) {
+ _sort_id = 0;
+ }
+ }
}
bool
return false;
}
- bool ret = SessionObject::set_name(str);
- if (ret) {
- _set_sort_id ();
- }
- return ret;
+ bool ret = SessionObject::set_name(str);
+ if (ret) {
+ _set_sort_id ();
+ }
+ return ret;
}
/***********************************************************************
void
Playlist::begin_undo ()
{
- in_update = true;
+ in_update = true;
freeze ();
}
Playlist::end_undo ()
{
thaw (true);
- in_update = false;
+ in_update = false;
}
void
{
if (g_atomic_int_dec_and_test (&block_notifications)) {
flush_notifications (from_undo);
- }
-
+ }
}
void
}
+void
+Playlist::notify_region_start_trimmed (boost::shared_ptr<Region> r)
+{
+ if (r->position() >= r->last_position()) {
+ /* trimmed shorter */
+ return;
+ }
+
+ Evoral::Range<framepos_t> const extra (r->position(), r->last_position());
+
+ if (holding_state ()) {
+
+ pending_region_extensions.push_back (extra);
+
+ } else {
+
+ list<Evoral::Range<framepos_t> > r;
+ r.push_back (extra);
+ RegionsExtended (r);
+
+ }
+}
+
+void
+Playlist::notify_region_end_trimmed (boost::shared_ptr<Region> r)
+{
+ if (r->length() < r->last_length()) {
+ /* trimmed shorter */
+ }
+
+ Evoral::Range<framepos_t> const extra (r->position() + r->last_length(), r->position() + r->length());
+
+ if (holding_state ()) {
+
+ pending_region_extensions.push_back (extra);
+
+ } else {
+
+ list<Evoral::Range<framepos_t> > r;
+ r.push_back (extra);
+ RegionsExtended (r);
+ }
+}
+
+
void
Playlist::notify_region_added (boost::shared_ptr<Region> r)
{
pending_contents_change = true;
pending_length = true;
} else {
- r->clear_changes ();
+ r->clear_changes ();
pending_length = false;
LengthChanged (); /* EMIT SIGNAL */
pending_contents_change = false;
for (s = pending_adds.begin(); s != pending_adds.end(); ++s) {
// cerr << _name << " sends RegionAdded\n";
- /* don't emit RegionAdded signal until relayering is done,
- so that the region is fully setup by the time
- anyone hear's that its been added
- */
+ /* don't emit RegionAdded signal until relayering is done,
+ so that the region is fully setup by the time
+ anyone hear's that its been added
+ */
dependent_checks_needed.insert (*s);
}
}
for (s = pending_adds.begin(); s != pending_adds.end(); ++s) {
- (*s)->clear_changes ();
+ (*s)->clear_changes ();
RegionAdded (boost::weak_ptr<Region> (*s)); /* EMIT SIGNAL */
- }
+ }
for (s = dependent_checks_needed.begin(); s != dependent_checks_needed.end(); ++s) {
check_dependents (*s, false);
if (!pending_range_moves.empty ()) {
RangesMoved (pending_range_moves, from_undo);
}
+
+ if (!pending_region_extensions.empty ()) {
+ RegionsExtended (pending_region_extensions);
+ }
clear_pending ();
pending_removes.clear ();
pending_bounds.clear ();
pending_range_moves.clear ();
+ pending_region_extensions.clear ();
pending_contents_change = false;
pending_length = false;
}
regions.insert (upper_bound (regions.begin(), regions.end(), region, cmp), region);
all_regions.insert (region);
- cerr << "Playlist: region added at " << position << endl;
-
possibly_splice_unlocked (position, region->length(), region);
- cerr << "Playlist: post-splice, region @ " << region->position() << endl;
-
if (!holding_state ()) {
/* layers get assigned from XML state, and are not reset during undo/redo */
relayer ();
possibly_splice_unlocked (pos, -distance);
if (!holding_state ()) {
- relayer ();
+ relayer ();
remove_dependents (region);
if (old_length != _get_extent().second) {
*/
copy_of_region->set_layer (copy_of_region->layer() + top_layer);
- cerr << "DEBUG: add new region at " << pos << endl;
add_region_internal (copy_of_region, (*i)->position() + pos);
}
pos += shift;
RegionList::iterator i = find (regions.begin(), regions.end(), region);
if (i == regions.end()) {
- /* the region bounds are being modified but its not currently
- in the region list. we will use its bounds correctly when/if
- it is added
- */
+ /* the region bounds are being modified but its not currently
+ in the region list. we will use its bounds correctly when/if
+ it is added
+ */
return;
}
if (what_changed.contains (Properties::position) && !what_changed.contains (Properties::length)) {
notify_region_moved (region);
+ } else if (!what_changed.contains (Properties::position) && what_changed.contains (Properties::length)) {
+ notify_region_end_trimmed (region);
+ } else if (what_changed.contains (Properties::position) && what_changed.contains (Properties::length)) {
+ notify_region_start_trimmed (region);
}
-
/* don't notify about layer changes, since we are the only object that can initiate
them, and we notify in ::relayer()
*/
all_regions.clear ();
}
+void
+Playlist::sync_all_regions_with_regions ()
+{
+ RegionLock rl (this);
+
+ all_regions.clear ();
+
+ for (RegionList::iterator i = regions.begin(); i != regions.end(); ++i) {
+ all_regions.insert (*i);
+ }
+}
+
void
Playlist::clear (bool with_signals)
{
regions.clear ();
- for (set<boost::shared_ptr<Region> >::iterator s = pending_removes.begin(); s != pending_removes.end(); ++s) {
- remove_dependents (*s);
- }
+ for (set<boost::shared_ptr<Region> >::iterator s = pending_removes.begin(); s != pending_removes.end(); ++s) {
+ remove_dependents (*s);
+ }
}
if (with_signals) {
- for (set<boost::shared_ptr<Region> >::iterator s = pending_removes.begin(); s != pending_removes.end(); ++s) {
- RegionRemoved (boost::weak_ptr<Region> (*s)); /* EMIT SIGNAL */
- }
+ for (set<boost::shared_ptr<Region> >::iterator s = pending_removes.begin(); s != pending_removes.end(); ++s) {
+ RegionRemoved (boost::weak_ptr<Region> (*s)); /* EMIT SIGNAL */
+ }
- pending_removes.clear ();
+ pending_removes.clear ();
pending_length = false;
LengthChanged ();
pending_contents_change = false;
}
uint32_t
-Playlist::count_regions_at (framepos_t frame)
+Playlist::count_regions_at (framepos_t frame) const
{
- RegionLock rlock (this);
+ RegionLock rlock (const_cast<Playlist*>(this));
uint32_t cnt = 0;
- for (RegionList::iterator i = regions.begin(); i != regions.end(); ++i) {
+ for (RegionList::const_iterator i = regions.begin(); i != regions.end(); ++i) {
if ((*i)->covers (frame)) {
cnt++;
}
to_check.insert (start);
to_check.insert (end);
- DEBUG_TRACE (DEBUG::AudioPlayback, ">>>>> REGIONS TO READ\n");
+ DEBUG_TRACE (DEBUG::AudioPlayback, ">>>>> REGIONS TO READ\n");
for (RegionList::iterator i = regions.begin(); i != regions.end(); ++i) {
case OverlapInternal:
covering.push_back (*i);
- DEBUG_TRACE (DEBUG::AudioPlayback, string_compose ("toread: will cover %1 (OInternal)\n", (*i)->name()));
+ DEBUG_TRACE (DEBUG::AudioPlayback, string_compose ("toread: will cover %1 (OInternal)\n", (*i)->name()));
break;
case OverlapStart:
to_check.insert ((*i)->position());
- if ((*i)->position() != 0) {
- to_check.insert ((*i)->position()-1);
- }
- DEBUG_TRACE (DEBUG::AudioPlayback, string_compose ("toread: will check %1 for %2\n", (*i)->position(), (*i)->name()));
+ if ((*i)->position() != 0) {
+ to_check.insert ((*i)->position()-1);
+ }
+ DEBUG_TRACE (DEBUG::AudioPlayback, string_compose ("toread: will check %1 for %2\n", (*i)->position(), (*i)->name()));
covering.push_back (*i);
break;
case OverlapEnd:
to_check.insert ((*i)->last_frame());
to_check.insert ((*i)->last_frame()+1);
- DEBUG_TRACE (DEBUG::AudioPlayback, string_compose ("toread: will cover %1 (OEnd)\n", (*i)->name()));
- DEBUG_TRACE (DEBUG::AudioPlayback, string_compose ("\ttoread: will check %1 for %2\n", (*i)->last_frame(), (*i)->name()));
- DEBUG_TRACE (DEBUG::AudioPlayback, string_compose ("\ttoread: will check %1 for %2\n", (*i)->last_frame(), (*i)->name()));
+ DEBUG_TRACE (DEBUG::AudioPlayback, string_compose ("toread: will cover %1 (OEnd)\n", (*i)->name()));
+ DEBUG_TRACE (DEBUG::AudioPlayback, string_compose ("\ttoread: will check %1 for %2\n", (*i)->last_frame(), (*i)->name()));
+ DEBUG_TRACE (DEBUG::AudioPlayback, string_compose ("\ttoread: will check %1 for %2\n", (*i)->last_frame(), (*i)->name()));
covering.push_back (*i);
break;
case OverlapExternal:
covering.push_back (*i);
to_check.insert ((*i)->position());
- if ((*i)->position() != 0) {
- to_check.insert ((*i)->position()-1);
- }
+ if ((*i)->position() != 0) {
+ to_check.insert ((*i)->position()-1);
+ }
to_check.insert ((*i)->last_frame());
to_check.insert ((*i)->last_frame()+1);
- DEBUG_TRACE (DEBUG::AudioPlayback, string_compose ("toread: will cover %1 (OExt)\n", (*i)->name()));
- DEBUG_TRACE (DEBUG::AudioPlayback, string_compose ("\ttoread: will check %1 for %2\n", (*i)->position(), (*i)->name()));
- DEBUG_TRACE (DEBUG::AudioPlayback, string_compose ("\ttoread: will check %1 for %2\n", (*i)->last_frame(), (*i)->name()));
+ DEBUG_TRACE (DEBUG::AudioPlayback, string_compose ("toread: will cover %1 (OExt)\n", (*i)->name()));
+ DEBUG_TRACE (DEBUG::AudioPlayback, string_compose ("\ttoread: will check %1 for %2\n", (*i)->position(), (*i)->name()));
+ DEBUG_TRACE (DEBUG::AudioPlayback, string_compose ("\ttoread: will check %1 for %2\n", (*i)->last_frame(), (*i)->name()));
break;
}
if (covering.size() == 1) {
rlist->push_back (covering.front());
- DEBUG_TRACE (DEBUG::AudioPlayback, string_compose ("Just one covering region (%1)\n", covering.front()->name()));
+ DEBUG_TRACE (DEBUG::AudioPlayback, string_compose ("Just one covering region (%1)\n", covering.front()->name()));
} else {
here.clear ();
- DEBUG_TRACE (DEBUG::AudioPlayback, string_compose ("++++ Considering %1\n", *t));
+ DEBUG_TRACE (DEBUG::AudioPlayback, string_compose ("++++ Considering %1\n", *t));
for (RegionList::iterator x = covering.begin(); x != covering.end(); ++x) {
if ((*x)->covers (*t)) {
here.push_back (*x);
- DEBUG_TRACE (DEBUG::AudioPlayback, string_compose ("region %1 covers %2\n",
- (*x)->name(),
- (*t)));
+ DEBUG_TRACE (DEBUG::AudioPlayback, string_compose ("region %1 covers %2\n",
+ (*x)->name(),
+ (*t)));
} else {
- DEBUG_TRACE (DEBUG::AudioPlayback, string_compose ("region %1 does NOT covers %2\n",
- (*x)->name(),
- (*t)));
- }
+ DEBUG_TRACE (DEBUG::AudioPlayback, string_compose ("region %1 does NOT covers %2\n",
+ (*x)->name(),
+ (*t)));
+ }
}
if ((*c)->opaque()) {
/* the other regions at this position are hidden by this one */
- DEBUG_TRACE (DEBUG::AudioPlayback, string_compose ("%1 is opaque, ignore all others\n",
- (*c)->name()));
+ DEBUG_TRACE (DEBUG::AudioPlayback, string_compose ("%1 is opaque, ignore all others\n",
+ (*c)->name()));
break;
}
}
}
}
- DEBUG_TRACE (DEBUG::AudioPlayback, string_compose ("<<<<< REGIONS TO READ returns %1\n", rlist->size()));
+ DEBUG_TRACE (DEBUG::AudioPlayback, string_compose ("<<<<< REGIONS TO READ returns %1\n", rlist->size()));
return rlist;
}
void
Playlist::update (const RegionListProperty::ChangeRecord& change)
{
- DEBUG_TRACE (DEBUG::Properties, string_compose ("Playlist %1 updates from a change record with %2 adds %3 removes\n",
- name(), change.added.size(), change.removed.size()));
+ DEBUG_TRACE (DEBUG::Properties, string_compose ("Playlist %1 updates from a change record with %2 adds %3 removes\n",
+ name(), change.added.size(), change.removed.size()));
- freeze ();
- /* add the added regions */
- for (RegionListProperty::ChangeContainer::iterator i = change.added.begin(); i != change.added.end(); ++i) {
- add_region ((*i), (*i)->position());
- }
- /* remove the removed regions */
- for (RegionListProperty::ChangeContainer::iterator i = change.removed.begin(); i != change.removed.end(); ++i) {
- remove_region (*i);
- }
+ freeze ();
+ /* add the added regions */
+ for (RegionListProperty::ChangeContainer::iterator i = change.added.begin(); i != change.added.end(); ++i) {
+ add_region ((*i), (*i)->position());
+ }
+ /* remove the removed regions */
+ for (RegionListProperty::ChangeContainer::iterator i = change.removed.begin(); i != change.removed.end(); ++i) {
+ remove_region (*i);
+ }
+
+ thaw ();
+}
+
+void
+Playlist::load_nested_sources (const XMLNode& node)
+{
+ XMLNodeList nlist;
+ XMLNodeConstIterator niter;
+
+ nlist = node.children();
- thaw ();
+ for (niter = nlist.begin(); niter != nlist.end(); ++niter) {
+ if ((*niter)->name() == "Source") {
+ try {
+ SourceFactory::create (_session, **niter, true);
+ }
+ catch (failed_constructor& err) {
+ error << string_compose (_("Cannot reconstruct nested source for playlist %1"), name()) << endmsg;
+ }
+ }
+ }
}
int
if (prop->name() == X_("name")) {
_name = prop->value();
- _set_sort_id ();
+ _set_sort_id ();
} else if (prop->name() == X_("id")) {
- _id = prop->value();
+ _id = prop->value();
} else if (prop->name() == X_("orig_diskstream_id")) {
_orig_diskstream_id = prop->value ();
} else if (prop->name() == X_("frozen")) {
_frozen = string_is_affirmative (prop->value());
+ } else if (prop->name() == X_("combine-ops")) {
+ _combine_ops = atoi (prop->value());
}
}
nlist = node.children();
+ /* find the "Nested" node, if any, and recreate the PlaylistSources
+ listed there
+ */
+
+ for (niter = nlist.begin(); niter != nlist.end(); ++niter) {
+ child = *niter;
+
+ if (child->name() == "Nested") {
+ load_nested_sources (*child);
+ break;
+ }
+ }
+
for (niter = nlist.begin(); niter != nlist.end(); ++niter) {
child = *niter;
error << _("Playlist: cannot create region from XML") << endmsg;
continue;
}
-
+
add_region (region, region->position(), 1.0);
Playlist::state (bool full_state)
{
XMLNode *node = new XMLNode (X_("Playlist"));
- char buf[64] = "";
+ char buf[64];
node->add_property (X_("id"), id().to_s());
node->add_property (X_("name"), _name);
if (full_state) {
RegionLock rlock (this, false);
+ XMLNode* nested_node = 0;
+
+ snprintf (buf, sizeof (buf), "%u", _combine_ops);
+ node->add_property ("combine-ops", buf);
+
+ for (RegionList::iterator i = regions.begin(); i != regions.end(); ++i) {
+ if ((*i)->max_source_level() > 0) {
+
+ if (!nested_node) {
+ nested_node = new XMLNode (X_("Nested"));
+ }
+
+ /* region is compound - get its playlist and
+ store that before we list the region that
+ needs it ...
+ */
+
+ const SourceList& sl ((*i)->sources());
+
+ for (SourceList::const_iterator s = sl.begin(); s != sl.end(); ++s) {
+ nested_node->add_child_nocopy ((*s)->get_state ());
+ }
+ }
+ }
+
+ if (nested_node) {
+ node->add_child_nocopy (*nested_node);
+ }
for (RegionList::iterator i = regions.begin(); i != regions.end(); ++i) {
node->add_child_nocopy ((*i)->get_state());
void
Playlist::relayer ()
{
- /* never compute layers when changing state for undo/redo or setting from XML */
+ /* never compute layers when changing state for undo/redo or setting from XML */
- if (in_update || in_set_state) {
- return;
- }
+ if (in_update || in_set_state) {
+ return;
+ }
bool changed = false;
}
}
- freeze ();
+ freeze ();
/* now reset the layers without holding the region lock */
region->set_layer (target_layer);
- /* now check all dependents, since we changed the layering */
+ /* now check all dependents, since we changed the layering */
for (list<LayerInfo>::iterator x = layerinfo.begin(); x != layerinfo.end(); ++x) {
check_dependents (x->first, false);
}
check_dependents (region, false);
- notify_layering_changed ();
+ notify_layering_changed ();
- thaw ();
+ thaw ();
return 0;
}
}
+bool
+Playlist::uses_source (boost::shared_ptr<const Source> src) const
+{
+ RegionLock rlock (const_cast<Playlist*> (this));
+
+ for (set<boost::shared_ptr<Region> >::iterator r = all_regions.begin(); r != all_regions.end(); ++r) {
+ if ((*r)->uses_source (src)) {
+ return true;
+ }
+ }
+
+ return false;
+}
+
boost::shared_ptr<Region>
Playlist::find_region (const ID& id) const
{
Playlist::region_use_count (boost::shared_ptr<Region> r) const
{
RegionLock rlock (const_cast<Playlist*> (this));
- uint32_t cnt = 0;
+ uint32_t cnt = 0;
for (RegionList::const_iterator i = regions.begin(); i != regions.end(); ++i) {
if ((*i) == r) {
- cnt++;
+ cnt++;
}
}
return max_framepos;
}
+
+void
+Playlist::join (const RegionList& r, const std::string& name)
+{
+ PropertyList plist;
+ uint32_t channels = 0;
+ uint32_t layer = 0;
+ framepos_t earliest_position = max_framepos;
+ vector<TwoRegions> old_and_new_regions;
+
+ boost::shared_ptr<Playlist> pl = PlaylistFactory::create (_type, _session, name, true);
+
+ for (RegionList::const_iterator i = r.begin(); i != r.end(); ++i) {
+ earliest_position = min (earliest_position, (*i)->position());
+ }
+
+ /* enable this so that we do not try to create xfades etc. as we add
+ * regions
+ */
+
+ pl->in_partition = true;
+
+ for (RegionList::const_iterator i = r.begin(); i != r.end(); ++i) {
+
+ /* copy the region */
+
+ boost::shared_ptr<Region> original_region = (*i);
+ boost::shared_ptr<Region> copied_region = RegionFactory::create (original_region, false);
+
+ old_and_new_regions.push_back (TwoRegions (original_region,copied_region));
+
+ /* make position relative to zero */
+
+ pl->add_region (copied_region, original_region->position() - earliest_position);
+
+ /* use the maximum number of channels for any region */
+
+ channels = max (channels, original_region->n_channels());
+
+ /* it will go above the layer of the highest existing region */
+
+ layer = max (layer, original_region->layer());
+ }
+
+ pl->in_partition = false;
+
+ /* now create a new PlaylistSource for each channel in the new playlist */
+
+ SourceList sources;
+ pair<framepos_t,framepos_t> extent = pl->get_extent();
+
+ for (uint32_t chn = 0; chn < channels; ++chn) {
+ sources.push_back (SourceFactory::createFromPlaylist (_type, _session, pl, name, chn, 0, extent.second, false, false));
+ }
+
+ /* now a new region using the list of sources */
+
+ plist.add (Properties::start, 0);
+ plist.add (Properties::length, extent.second);
+ plist.add (Properties::name, name);
+ plist.add (Properties::layer, layer+1);
+
+ boost::shared_ptr<Region> compound_region = RegionFactory::create (sources, plist, true);
+
+ /* add any dependent regions to the new playlist */
+
+ copy_dependents (old_and_new_regions, pl);
+
+ /* remove all the selected regions from the current playlist
+ */
+
+ freeze ();
+
+ for (RegionList::const_iterator i = r.begin(); i != r.end(); ++i) {
+ remove_region (*i);
+ }
+
+ /* add the new region at the right location */
+
+ add_region (compound_region, earliest_position);
+
+ _combine_ops++;
+
+ thaw ();
+}
+
+uint32_t
+Playlist::max_source_level () const
+{
+ RegionLock rlock (const_cast<Playlist *> (this));
+ uint32_t lvl = 0;
+
+ for (RegionList::const_iterator i = regions.begin(); i != regions.end(); ++i) {
+ lvl = max (lvl, (*i)->max_source_level());
+ }
+
+ return lvl;
+}
+
+
+uint32_t
+Playlist::count_joined_regions () const
+{
+ RegionLock rlock (const_cast<Playlist *> (this));
+ uint32_t cnt = 0;
+
+ for (RegionList::const_iterator i = regions.begin(); i != regions.end(); ++i) {
+ if ((*i)->max_source_level() > 0) {
+ cnt++;
+ }
+ }
+
+ return cnt;
+}
+