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livetrax/libs/ardour/session_playlists.cc
Carl Hetherington fe2651ae5f Remove playlists from the session lists when they DropReferences. Should fix #4023.
git-svn-id: svn://localhost/ardour2/branches/3.0@9460 d708f5d6-7413-0410-9779-e7cbd77b26cf
2011-05-02 23:22:00 +00:00

453 lines
10 KiB
C++

/*
Copyright (C) 2009 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
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <vector>
#include "pbd/xml++.h"
#include "pbd/compose.h"
#include "ardour/debug.h"
#include "ardour/session_playlists.h"
#include "ardour/playlist.h"
#include "ardour/region.h"
#include "ardour/playlist_factory.h"
#include "ardour/session.h"
#include "ardour/source.h"
#include "i18n.h"
using namespace std;
using namespace PBD;
using namespace ARDOUR;
SessionPlaylists::~SessionPlaylists ()
{
DEBUG_TRACE (DEBUG::Destruction, "delete playlists\n");
for (List::iterator i = playlists.begin(); i != playlists.end(); ) {
SessionPlaylists::List::iterator tmp;
tmp = i;
++tmp;
DEBUG_TRACE(DEBUG::Destruction, string_compose ("Dropping for used playlist %1 ; pre-ref = %2\n", (*i)->name(), (*i).use_count()));
boost::shared_ptr<Playlist> keeper (*i);
(*i)->drop_references ();
i = tmp;
}
DEBUG_TRACE (DEBUG::Destruction, "delete unused playlists\n");
for (List::iterator i = unused_playlists.begin(); i != unused_playlists.end(); ) {
List::iterator tmp;
tmp = i;
++tmp;
DEBUG_TRACE(DEBUG::Destruction, string_compose ("Dropping for unused playlist %1 ; pre-ref = %2\n", (*i)->name(), (*i).use_count()));
boost::shared_ptr<Playlist> keeper (*i);
(*i)->drop_references ();
i = tmp;
}
playlists.clear ();
unused_playlists.clear ();
}
bool
SessionPlaylists::add (boost::shared_ptr<Playlist> playlist)
{
Glib::Mutex::Lock lm (lock);
bool const existing = find (playlists.begin(), playlists.end(), playlist) != playlists.end();
if (!existing) {
playlists.insert (playlists.begin(), playlist);
playlist->InUse.connect_same_thread (*this, boost::bind (&SessionPlaylists::track, this, _1, boost::weak_ptr<Playlist>(playlist)));
playlist->DropReferences.connect_same_thread (
*this, boost::bind (&SessionPlaylists::remove_weak, this, boost::weak_ptr<Playlist> (playlist))
);
}
return existing;
}
void
SessionPlaylists::remove_weak (boost::weak_ptr<Playlist> playlist)
{
boost::shared_ptr<Playlist> p = playlist.lock ();
if (p) {
remove (p);
}
}
void
SessionPlaylists::remove (boost::shared_ptr<Playlist> playlist)
{
Glib::Mutex::Lock lm (lock);
List::iterator i;
i = find (playlists.begin(), playlists.end(), playlist);
if (i != playlists.end()) {
playlists.erase (i);
}
i = find (unused_playlists.begin(), unused_playlists.end(), playlist);
if (i != unused_playlists.end()) {
unused_playlists.erase (i);
}
}
void
SessionPlaylists::track (bool inuse, boost::weak_ptr<Playlist> wpl)
{
boost::shared_ptr<Playlist> pl(wpl.lock());
if (!pl) {
return;
}
List::iterator x;
if (pl->hidden()) {
/* its not supposed to be visible */
return;
}
{
Glib::Mutex::Lock lm (lock);
if (!inuse) {
unused_playlists.insert (pl);
if ((x = playlists.find (pl)) != playlists.end()) {
playlists.erase (x);
}
} else {
playlists.insert (pl);
if ((x = unused_playlists.find (pl)) != unused_playlists.end()) {
unused_playlists.erase (x);
}
}
}
}
uint32_t
SessionPlaylists::n_playlists () const
{
Glib::Mutex::Lock lm (lock);
return playlists.size();
}
boost::shared_ptr<Playlist>
SessionPlaylists::by_name (string name)
{
Glib::Mutex::Lock lm (lock);
for (List::iterator i = playlists.begin(); i != playlists.end(); ++i) {
if ((*i)->name() == name) {
return* i;
}
}
for (List::iterator i = unused_playlists.begin(); i != unused_playlists.end(); ++i) {
if ((*i)->name() == name) {
return* i;
}
}
return boost::shared_ptr<Playlist>();
}
boost::shared_ptr<Playlist>
SessionPlaylists::by_id (const PBD::ID& id)
{
Glib::Mutex::Lock lm (lock);
for (List::iterator i = playlists.begin(); i != playlists.end(); ++i) {
if ((*i)->id() == id) {
return* i;
}
}
for (List::iterator i = unused_playlists.begin(); i != unused_playlists.end(); ++i) {
if ((*i)->id() == id) {
return* i;
}
}
return boost::shared_ptr<Playlist>();
}
void
SessionPlaylists::unassigned (std::list<boost::shared_ptr<Playlist> > & list)
{
Glib::Mutex::Lock lm (lock);
for (List::iterator i = playlists.begin(); i != playlists.end(); ++i) {
if (!(*i)->get_orig_diskstream_id().to_s().compare ("0")) {
list.push_back (*i);
}
}
for (List::iterator i = unused_playlists.begin(); i != unused_playlists.end(); ++i) {
if (!(*i)->get_orig_diskstream_id().to_s().compare ("0")) {
list.push_back (*i);
}
}
}
void
SessionPlaylists::get (vector<boost::shared_ptr<Playlist> >& s)
{
Glib::Mutex::Lock lm (lock);
for (List::iterator i = playlists.begin(); i != playlists.end(); ++i) {
s.push_back (*i);
}
for (List::iterator i = unused_playlists.begin(); i != unused_playlists.end(); ++i) {
s.push_back (*i);
}
}
void
SessionPlaylists::destroy_region (boost::shared_ptr<Region> r)
{
Glib::Mutex::Lock lm (lock);
for (List::iterator i = playlists.begin(); i != playlists.end(); ++i) {
(*i)->destroy_region (r);
}
for (List::iterator i = unused_playlists.begin(); i != unused_playlists.end(); ++i) {
(*i)->destroy_region (r);
}
}
void
SessionPlaylists::find_equivalent_playlist_regions (boost::shared_ptr<Region> region, vector<boost::shared_ptr<Region> >& result)
{
for (List::iterator i = playlists.begin(); i != playlists.end(); ++i)
(*i)->get_region_list_equivalent_regions (region, result);
}
/** Return the number of playlists (not regions) that contain @a src */
uint32_t
SessionPlaylists::source_use_count (boost::shared_ptr<const Source> src) const
{
uint32_t count = 0;
for (List::const_iterator p = playlists.begin(); p != playlists.end(); ++p) {
if ((*p)->uses_source (src)) {
++count;
break;
}
}
return count;
}
void
SessionPlaylists::sync_all_regions_with_regions ()
{
Glib::Mutex::Lock lm (lock);
for (List::const_iterator p = playlists.begin(); p != playlists.end(); ++p) {
(*p)->sync_all_regions_with_regions ();
}
}
void
SessionPlaylists::update_after_tempo_map_change ()
{
for (List::iterator i = playlists.begin(); i != playlists.end(); ++i) {
(*i)->update_after_tempo_map_change ();
}
for (List::iterator i = unused_playlists.begin(); i != unused_playlists.end(); ++i) {
(*i)->update_after_tempo_map_change ();
}
}
void
SessionPlaylists::add_state (XMLNode* node, bool full_state)
{
XMLNode* child = node->add_child ("Playlists");
for (List::iterator i = playlists.begin(); i != playlists.end(); ++i) {
if (!(*i)->hidden()) {
if (full_state) {
child->add_child_nocopy ((*i)->get_state());
} else {
child->add_child_nocopy ((*i)->get_template());
}
}
}
child = node->add_child ("UnusedPlaylists");
for (List::iterator i = unused_playlists.begin(); i != unused_playlists.end(); ++i) {
if (!(*i)->hidden()) {
if (!(*i)->empty()) {
if (full_state) {
child->add_child_nocopy ((*i)->get_state());
} else {
child->add_child_nocopy ((*i)->get_template());
}
}
}
}
}
/** @return true for `stop cleanup', otherwise false */
bool
SessionPlaylists::maybe_delete_unused (boost::function<int(boost::shared_ptr<Playlist>)> ask)
{
vector<boost::shared_ptr<Playlist> > playlists_tbd;
for (List::iterator x = unused_playlists.begin(); x != unused_playlists.end(); ++x) {
int status = ask (*x);
switch (status) {
case -1:
return true;
case 0:
playlists_tbd.push_back (*x);
break;
default:
/* leave it alone */
break;
}
}
/* now delete any that were marked for deletion */
for (vector<boost::shared_ptr<Playlist> >::iterator x = playlists_tbd.begin(); x != playlists_tbd.end(); ++x) {
boost::shared_ptr<Playlist> keeper (*x);
(*x)->drop_references ();
}
playlists_tbd.clear ();
return false;
}
int
SessionPlaylists::load (Session& session, const XMLNode& node)
{
XMLNodeList nlist;
XMLNodeConstIterator niter;
boost::shared_ptr<Playlist> playlist;
nlist = node.children();
for (niter = nlist.begin(); niter != nlist.end(); ++niter) {
if ((playlist = XMLPlaylistFactory (session, **niter)) == 0) {
error << _("Session: cannot create Playlist from XML description.") << endmsg;
}
}
return 0;
}
int
SessionPlaylists::load_unused (Session& session, const XMLNode& node)
{
XMLNodeList nlist;
XMLNodeConstIterator niter;
boost::shared_ptr<Playlist> playlist;
nlist = node.children();
for (niter = nlist.begin(); niter != nlist.end(); ++niter) {
if ((playlist = XMLPlaylistFactory (session, **niter)) == 0) {
error << _("Session: cannot create Playlist from XML description.") << endmsg;
continue;
}
// now manually untrack it
track (false, boost::weak_ptr<Playlist> (playlist));
}
return 0;
}
boost::shared_ptr<Playlist>
SessionPlaylists::XMLPlaylistFactory (Session& session, const XMLNode& node)
{
try {
return PlaylistFactory::create (session, node);
}
catch (failed_constructor& err) {
return boost::shared_ptr<Playlist>();
}
}
boost::shared_ptr<Crossfade>
SessionPlaylists::find_crossfade (const PBD::ID& id)
{
Glib::Mutex::Lock lm (lock);
boost::shared_ptr<Crossfade> c;
for (List::iterator i = playlists.begin(); i != playlists.end(); ++i) {
c = (*i)->find_crossfade (id);
if (c) {
return c;
}
}
for (List::iterator i = unused_playlists.begin(); i != unused_playlists.end(); ++i) {
c = (*i)->find_crossfade (id);
if (c) {
return c;
}
}
return boost::shared_ptr<Crossfade> ();
}
uint32_t
SessionPlaylists::region_use_count (boost::shared_ptr<Region> region) const
{
Glib::Mutex::Lock lm (lock);
uint32_t cnt = 0;
for (List::iterator i = playlists.begin(); i != playlists.end(); ++i) {
cnt += (*i)->region_use_count (region);
}
for (List::iterator i = unused_playlists.begin(); i != unused_playlists.end(); ++i) {
cnt += (*i)->region_use_count (region);
}
return cnt;
}