/*
- Copyright (C) 2000-2003 Paul Davis
+ Copyright (C) 2000-2003 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
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- $Id$
*/
#include <iostream>
#include <cmath>
#include <climits>
#include <algorithm>
-
-#include <sigc++/bind.h>
-#include <sigc++/class_slot.h>
+#include <sstream>
#include <glibmm/thread.h>
-#include <pbd/xml++.h>
-#include <pbd/stacktrace.h>
-
-#include <ardour/region.h>
-#include <ardour/playlist.h>
-#include <ardour/session.h>
-#include <ardour/region_factory.h>
+#include "pbd/xml++.h"
+#include "pbd/stacktrace.h"
+#include "pbd/enumwriter.h"
+
+#include "ardour/debug.h"
+#include "ardour/region.h"
+#include "ardour/playlist.h"
+#include "ardour/session.h"
+#include "ardour/source.h"
+#include "ardour/tempo.h"
+#include "ardour/region_factory.h"
+#include "ardour/filter.h"
+#include "ardour/profile.h"
+#include "ardour/utils.h"
#include "i18n.h"
using namespace ARDOUR;
using namespace PBD;
-Change Region::FadeChanged = ARDOUR::new_change ();
-Change Region::SyncOffsetChanged = ARDOUR::new_change ();
-Change Region::MuteChanged = ARDOUR::new_change ();
-Change Region::OpacityChanged = ARDOUR::new_change ();
-Change Region::LockChanged = ARDOUR::new_change ();
-Change Region::LayerChanged = ARDOUR::new_change ();
-Change Region::HiddenChanged = ARDOUR::new_change ();
+namespace ARDOUR {
+ namespace Properties {
+ PBD::PropertyDescriptor<bool> muted;
+ PBD::PropertyDescriptor<bool> opaque;
+ PBD::PropertyDescriptor<bool> locked;
+ PBD::PropertyDescriptor<bool> automatic;
+ PBD::PropertyDescriptor<bool> whole_file;
+ PBD::PropertyDescriptor<bool> import;
+ PBD::PropertyDescriptor<bool> external;
+ PBD::PropertyDescriptor<bool> sync_marked;
+ PBD::PropertyDescriptor<bool> left_of_split;
+ PBD::PropertyDescriptor<bool> right_of_split;
+ PBD::PropertyDescriptor<bool> hidden;
+ PBD::PropertyDescriptor<bool> position_locked;
+ PBD::PropertyDescriptor<bool> valid_transients;
+ PBD::PropertyDescriptor<framepos_t> start;
+ PBD::PropertyDescriptor<framecnt_t> length;
+ PBD::PropertyDescriptor<framepos_t> position;
+ PBD::PropertyDescriptor<framecnt_t> sync_position;
+ PBD::PropertyDescriptor<layer_t> layer;
+ PBD::PropertyDescriptor<framepos_t> ancestral_start;
+ PBD::PropertyDescriptor<framecnt_t> ancestral_length;
+ PBD::PropertyDescriptor<float> stretch;
+ PBD::PropertyDescriptor<float> shift;
+ PBD::PropertyDescriptor<PositionLockStyle> position_lock_style;
+ }
+}
+
+PBD::Signal2<void,boost::shared_ptr<ARDOUR::Region>,const PropertyChange&> Region::RegionPropertyChanged;
-Region::Region (nframes_t start, nframes_t length, const string& name, layer_t layer, Region::Flag flags)
+void
+Region::make_property_quarks ()
{
- /* basic Region constructor */
+ Properties::muted.property_id = g_quark_from_static_string (X_("muted"));
+ DEBUG_TRACE (DEBUG::Properties, string_compose ("quark for muted = %1\n", Properties::muted.property_id));
+ Properties::opaque.property_id = g_quark_from_static_string (X_("opaque"));
+ DEBUG_TRACE (DEBUG::Properties, string_compose ("quark for opaque = %1\n", Properties::opaque.property_id));
+ Properties::locked.property_id = g_quark_from_static_string (X_("locked"));
+ DEBUG_TRACE (DEBUG::Properties, string_compose ("quark for locked = %1\n", Properties::locked.property_id));
+ Properties::automatic.property_id = g_quark_from_static_string (X_("automatic"));
+ DEBUG_TRACE (DEBUG::Properties, string_compose ("quark for automatic = %1\n", Properties::automatic.property_id));
+ Properties::whole_file.property_id = g_quark_from_static_string (X_("whole-file"));
+ DEBUG_TRACE (DEBUG::Properties, string_compose ("quark for whole-file = %1\n", Properties::whole_file.property_id));
+ Properties::import.property_id = g_quark_from_static_string (X_("import"));
+ DEBUG_TRACE (DEBUG::Properties, string_compose ("quark for import = %1\n", Properties::import.property_id));
+ Properties::external.property_id = g_quark_from_static_string (X_("external"));
+ DEBUG_TRACE (DEBUG::Properties, string_compose ("quark for external = %1\n", Properties::external.property_id));
+ Properties::sync_marked.property_id = g_quark_from_static_string (X_("sync-marked"));
+ DEBUG_TRACE (DEBUG::Properties, string_compose ("quark for sync-marked = %1\n", Properties::sync_marked.property_id));
+ Properties::left_of_split.property_id = g_quark_from_static_string (X_("left-of-split"));
+ DEBUG_TRACE (DEBUG::Properties, string_compose ("quark for left-of-split = %1\n", Properties::left_of_split.property_id));
+ Properties::right_of_split.property_id = g_quark_from_static_string (X_("right-of-split"));
+ DEBUG_TRACE (DEBUG::Properties, string_compose ("quark for right-of-split = %1\n", Properties::right_of_split.property_id));
+ Properties::hidden.property_id = g_quark_from_static_string (X_("hidden"));
+ DEBUG_TRACE (DEBUG::Properties, string_compose ("quark for hidden = %1\n", Properties::hidden.property_id));
+ Properties::position_locked.property_id = g_quark_from_static_string (X_("position-locked"));
+ DEBUG_TRACE (DEBUG::Properties, string_compose ("quark for position-locked = %1\n", Properties::position_locked.property_id));
+ Properties::valid_transients.property_id = g_quark_from_static_string (X_("valid-transients"));
+ DEBUG_TRACE (DEBUG::Properties, string_compose ("quark for valid-transients = %1\n", Properties::valid_transients.property_id));
+ Properties::start.property_id = g_quark_from_static_string (X_("start"));
+ DEBUG_TRACE (DEBUG::Properties, string_compose ("quark for start = %1\n", Properties::start.property_id));
+ Properties::length.property_id = g_quark_from_static_string (X_("length"));
+ DEBUG_TRACE (DEBUG::Properties, string_compose ("quark for length = %1\n", Properties::length.property_id));
+ Properties::position.property_id = g_quark_from_static_string (X_("position"));
+ DEBUG_TRACE (DEBUG::Properties, string_compose ("quark for position = %1\n", Properties::position.property_id));
+ Properties::sync_position.property_id = g_quark_from_static_string (X_("sync-position"));
+ DEBUG_TRACE (DEBUG::Properties, string_compose ("quark for sync-position = %1\n", Properties::sync_position.property_id));
+ Properties::layer.property_id = g_quark_from_static_string (X_("layer"));
+ DEBUG_TRACE (DEBUG::Properties, string_compose ("quark for layer = %1\n", Properties::layer.property_id));
+ Properties::ancestral_start.property_id = g_quark_from_static_string (X_("ancestral-start"));
+ DEBUG_TRACE (DEBUG::Properties, string_compose ("quark for ancestral-start = %1\n", Properties::ancestral_start.property_id));
+ Properties::ancestral_length.property_id = g_quark_from_static_string (X_("ancestral-length"));
+ DEBUG_TRACE (DEBUG::Properties, string_compose ("quark for ancestral-length = %1\n", Properties::ancestral_length.property_id));
+ Properties::stretch.property_id = g_quark_from_static_string (X_("stretch"));
+ DEBUG_TRACE (DEBUG::Properties, string_compose ("quark for stretch = %1\n", Properties::stretch.property_id));
+ Properties::shift.property_id = g_quark_from_static_string (X_("shift"));
+ DEBUG_TRACE (DEBUG::Properties, string_compose ("quark for shift = %1\n", Properties::shift.property_id));
+ Properties::position_lock_style.property_id = g_quark_from_static_string (X_("positional-lock-style"));
+ DEBUG_TRACE (DEBUG::Properties, string_compose ("quark for position_lock_style = %1\n", Properties::position_lock_style.property_id));
+}
- _flags = flags;
- _playlist = 0;
- _read_data_count = 0;
- _frozen = 0;
- pending_changed = Change (0);
+void
+Region::register_properties ()
+{
+ _xml_node_name = X_("Region");
+
+ add_property (_muted);
+ add_property (_opaque);
+ add_property (_locked);
+ add_property (_automatic);
+ add_property (_whole_file);
+ add_property (_import);
+ add_property (_external);
+ add_property (_sync_marked);
+ add_property (_left_of_split);
+ add_property (_right_of_split);
+ add_property (_hidden);
+ add_property (_position_locked);
+ add_property (_valid_transients);
+ add_property (_start);
+ add_property (_length);
+ add_property (_position);
+ add_property (_sync_position);
+ add_property (_layer);
+ add_property (_ancestral_start);
+ add_property (_ancestral_length);
+ add_property (_stretch);
+ add_property (_shift);
+ add_property (_position_lock_style);
+}
- _name = name;
- _start = start;
- _sync_position = _start;
- _length = length;
- _position = 0;
- _layer = layer;
- _read_data_count = 0;
- _first_edit = EditChangesNothing;
- _last_layer_op = 0;
+#define REGION_DEFAULT_STATE(s,l) \
+ _muted (Properties::muted, false) \
+ , _opaque (Properties::opaque, true) \
+ , _locked (Properties::locked, false) \
+ , _automatic (Properties::automatic, false) \
+ , _whole_file (Properties::whole_file, false) \
+ , _import (Properties::import, false) \
+ , _external (Properties::external, false) \
+ , _sync_marked (Properties::sync_marked, false) \
+ , _left_of_split (Properties::left_of_split, false) \
+ , _right_of_split (Properties::right_of_split, false) \
+ , _hidden (Properties::hidden, false) \
+ , _position_locked (Properties::position_locked, false) \
+ , _valid_transients (Properties::valid_transients, false) \
+ , _start (Properties::start, (s)) \
+ , _length (Properties::length, (l)) \
+ , _position (Properties::position, 0) \
+ , _sync_position (Properties::sync_position, (s)) \
+ , _layer (Properties::layer, 0) \
+ , _ancestral_start (Properties::ancestral_start, (s)) \
+ , _ancestral_length (Properties::ancestral_length, (l)) \
+ , _stretch (Properties::stretch, 1.0) \
+ , _shift (Properties::shift, 1.0) \
+ , _position_lock_style (Properties::position_lock_style, _type == DataType::AUDIO ? AudioTime : MusicTime)
+
+#define REGION_COPY_STATE(other) \
+ _muted (other->_muted) \
+ , _opaque (other->_opaque) \
+ , _locked (other->_locked) \
+ , _automatic (other->_automatic) \
+ , _whole_file (other->_whole_file) \
+ , _import (other->_import) \
+ , _external (other->_external) \
+ , _sync_marked (other->_sync_marked) \
+ , _left_of_split (other->_left_of_split) \
+ , _right_of_split (other->_right_of_split) \
+ , _hidden (other->_hidden) \
+ , _position_locked (other->_position_locked) \
+ , _valid_transients (other->_valid_transients) \
+ , _start(other->_start) \
+ , _length(other->_length) \
+ , _position(other->_position) \
+ , _sync_position(other->_sync_position) \
+ , _layer (other->_layer) \
+ , _ancestral_start (other->_ancestral_start) \
+ , _ancestral_length (other->_ancestral_length) \
+ , _stretch (other->_stretch) \
+ , _shift (other->_shift) \
+ , _position_lock_style (other->_position_lock_style)
+
+/* derived-from-derived constructor (no sources in constructor) */
+Region::Region (Session& s, framepos_t start, framecnt_t length, const string& name, DataType type)
+ : SessionObject(s, name)
+ , _type(type)
+ , REGION_DEFAULT_STATE(start,length)
+ , _last_length (length)
+ , _last_position (0)
+ , _first_edit (EditChangesNothing)
+ , _read_data_count(0)
+ , _last_layer_op(0)
+ , _pending_explicit_relayer (false)
+{
+ register_properties ();
+
+ /* no sources at this point */
}
-Region::Region (boost::shared_ptr<const Region> other, nframes_t offset, nframes_t length, const string& name, layer_t layer, Flag flags)
+/** Basic Region constructor (many sources) */
+Region::Region (const SourceList& srcs)
+ : SessionObject(srcs.front()->session(), "toBeRenamed")
+ , _type (srcs.front()->type())
+ , REGION_DEFAULT_STATE(0,0)
+ , _last_length (0)
+ , _last_position (0)
+ , _first_edit (EditChangesNothing)
+ , _read_data_count(0)
+ , _last_layer_op (0)
+ , _pending_explicit_relayer (false)
{
- /* create a new Region from part of an existing one */
+ register_properties ();
+
+ _type = srcs.front()->type();
+
+ use_sources (srcs);
+
+ assert(_sources.size() > 0);
+ assert (_type == srcs.front()->type());
+}
+
+/** Create a new Region from part of an existing one, starting at one of two places:
+
+ if \a offset_relative is true, then the start within \a other is given by \a offset
+ (i.e. relative to the start of \a other's sources, the start is \a offset + \a other.start()
+
+ if @param offset_relative is false, then the start within the source is given \a offset.
+*/
+Region::Region (boost::shared_ptr<const Region> other, frameoffset_t offset, bool offset_relative)
+ : SessionObject(other->session(), other->name())
+ , _type (other->data_type())
+ , REGION_COPY_STATE (other)
+ , _last_length (other->_last_length)
+ , _last_position(other->_last_position) \
+ , _first_edit (EditChangesNothing)
+ , _read_data_count(0)
+ , _last_layer_op (0)
+ , _pending_explicit_relayer (false)
+
+{
+ register_properties ();
+
+ /* override state that may have been incorrectly inherited from the other region
+ */
+
+ _position = 0;
+ _locked = false;
+ _whole_file = false;
+ _hidden = false;
+
+ use_sources (other->_sources);
- _frozen = 0;
- pending_changed = Change (0);
- _playlist = 0;
- _read_data_count = 0;
+ if (!offset_relative) {
+
+ /* not sure why we do this, but its a hangover from ardour before
+ property lists. this would be nice to remove.
+ */
+
+ _position_lock_style = other->_position_lock_style;
+ _first_edit = other->_first_edit;
+
+ if (offset == 0) {
+
+ _start = 0;
+
+ /* sync pos is relative to start of file. our start-in-file is now zero,
+ so set our sync position to whatever the the difference between
+ _start and _sync_pos was in the other region.
+
+ result is that our new sync pos points to the same point in our source(s)
+ as the sync in the other region did in its source(s).
+
+ since we start at zero in our source(s), it is not possible to use a sync point that
+ is before the start. reset it to _start if that was true in the other region.
+ */
+
+ if (other->sync_marked()) {
+ if (other->_start < other->_sync_position) {
+ /* sync pos was after the start point of the other region */
+ _sync_position = other->_sync_position - other->_start;
+ } else {
+ /* sync pos was before the start point of the other region. not possible here. */
+ _sync_marked = false;
+ _sync_position = _start;
+ }
+ } else {
+ _sync_marked = false;
+ _sync_position = _start;
+ }
+ } else {
+ /* XXX do something else ! */
+ fatal << string_compose (_("programming error: %1"), X_("Region+offset constructor used with illegal combination of offset+relative"))
+ << endmsg;
+ /*NOTREACHED*/
+ }
- _start = other->_start + offset;
- if (other->_sync_position < offset) {
- _sync_position = other->_sync_position;
} else {
- _sync_position = _start;
+
+ _start = other->_start + offset;
+
+ /* if the other region had a distinct sync point
+ set, then continue to use it as best we can.
+ otherwise, reset sync point back to start.
+ */
+
+ if (other->sync_marked()) {
+ if (other->_sync_position < _start) {
+ _sync_marked = false;
+ _sync_position = _start;
+ } else {
+ _sync_position = other->_sync_position;
+ }
+ } else {
+ _sync_marked = false;
+ _sync_position = _start;
+ }
}
- _length = length;
- _name = name;
- _position = 0;
- _layer = layer;
- _flags = Flag (flags & ~(Locked|WholeFile|Hidden));
- _first_edit = EditChangesNothing;
- _last_layer_op = 0;
+
+ if (Profile->get_sae()) {
+ /* reset sync point to start if its ended up
+ outside region bounds.
+ */
+
+ if (_sync_position < _start || _sync_position >= _start + _length) {
+ _sync_marked = false;
+ _sync_position = _start;
+ }
+ }
+
+ assert (_type == other->data_type());
}
-Region::Region (boost::shared_ptr<const Region> other)
+/** Create a copy of @param other but with different sources. Used by filters */
+Region::Region (boost::shared_ptr<const Region> other, const SourceList& srcs)
+ : SessionObject (other->session(), other->name())
+ , _type (srcs.front()->type())
+ , REGION_COPY_STATE (other)
+ , _last_length (other->_last_length)
+ , _last_position (other->_last_position)
+ , _first_edit (EditChangesID)
+ , _read_data_count (0)
+ , _last_layer_op (other->_last_layer_op)
+ , _pending_explicit_relayer (false)
{
- /* Pure copy constructor */
+ register_properties ();
- _frozen = 0;
- pending_changed = Change (0);
- _playlist = 0;
- _read_data_count = 0;
+ _locked = false;
+ _position_locked = false;
- _first_edit = EditChangesID;
other->_first_edit = EditChangesName;
if (other->_extra_xml) {
_extra_xml = 0;
}
- _start = other->_start;
- _sync_position = other->_sync_position;
- _length = other->_length;
- _name = other->_name;
- _position = other->_position;
- _layer = other->_layer;
- _flags = Flag (other->_flags & ~Locked);
- _last_layer_op = other->_last_layer_op;
+ use_sources (srcs);
+ assert(_sources.size() > 0);
}
-Region::Region (const XMLNode& node)
+/** Simple "copy" constructor */
+Region::Region (boost::shared_ptr<const Region> other)
+ : SessionObject(other->session(), other->name())
+ , _type(other->data_type())
+ , REGION_COPY_STATE (other)
+ , _last_length (other->_last_length)
+ , _last_position (other->_last_position)
+ , _first_edit (EditChangesID)
+ , _read_data_count(0)
+ , _last_layer_op(other->_last_layer_op)
+ , _pending_explicit_relayer (false)
{
- _frozen = 0;
- pending_changed = Change (0);
- _playlist = 0;
- _read_data_count = 0;
- _start = 0;
- _sync_position = _start;
- _length = 0;
- _name = X_("error: XML did not reset this");
- _position = 0;
- _layer = 0;
- _flags = Flag (0);
- _first_edit = EditChangesNothing;
+ register_properties ();
+
+ _locked = false;
+ _position_locked = false;
+
+ other->_first_edit = EditChangesName;
- if (set_state (node)) {
- throw failed_constructor();
+ if (other->_extra_xml) {
+ _extra_xml = new XMLNode (*other->_extra_xml);
+ } else {
+ _extra_xml = 0;
}
+
+ use_sources (other->_sources);
+ assert(_sources.size() > 0);
}
Region::~Region ()
{
- // cerr << "====== " << _name << " DESTRUCTOR\n";
- // stacktrace (cerr);
- /* derived classes must call notify_callbacks() and then emit GoingAway */
+ DEBUG_TRACE (DEBUG::Destruction, string_compose ("Region %1 destructor @ %2\n", _name, this));
+ drop_sources ();
}
void
-Region::set_playlist (Playlist* pl)
+Region::set_playlist (boost::weak_ptr<Playlist> wpl)
{
- _playlist = pl;
+ _playlist = wpl.lock();
}
-void
-Region::set_name (string str)
+bool
+Region::set_name (const std::string& str)
{
if (_name != str) {
- _name = str;
- send_change (NameChanged);
+ SessionObject::set_name(str); // EMIT SIGNAL NameChanged()
+ assert(_name == str);
+ send_change (Properties::name);
}
+
+ return true;
}
void
-Region::set_length (nframes_t len, void *src)
+Region::set_length (framecnt_t len, void */*src*/)
{
- if (_flags & Locked) {
+ //cerr << "Region::set_length() len = " << len << endl;
+ if (locked()) {
return;
}
if (_length != len && len != 0) {
- /* check that the current _position wouldn't make the new
+ /* check that the current _position wouldn't make the new
length impossible.
*/
if (!verify_length (len)) {
return;
}
-
- _length = len;
- _flags = Region::Flag (_flags & ~WholeFile);
+ _last_length = _length;
+ _length = len;
+ _whole_file = false;
first_edit ();
maybe_uncopy ();
+ invalidate_transients ();
- if (!_frozen) {
+ if (!property_changes_suspended()) {
recompute_at_end ();
}
- send_change (LengthChanged);
+ send_change (Properties::length);
}
}
void
Region::maybe_uncopy ()
{
+ /* this does nothing but marked a semantic moment once upon a time */
}
void
Region::first_edit ()
{
- if (_first_edit != EditChangesNothing && _playlist) {
+ boost::shared_ptr<Playlist> pl (playlist());
+
+ if (_first_edit != EditChangesNothing && pl) {
- _name = _playlist->session().new_region_name (_name);
+ _name = RegionFactory::new_region_name (_name);
_first_edit = EditChangesNothing;
- send_change (NameChanged);
+ send_change (Properties::name);
RegionFactory::CheckNewRegion (shared_from_this());
}
}
+bool
+Region::at_natural_position () const
+{
+ boost::shared_ptr<Playlist> pl (playlist());
+
+ if (!pl) {
+ return false;
+ }
+
+ boost::shared_ptr<Region> whole_file_region = get_parent();
+
+ if (whole_file_region) {
+ if (_position == whole_file_region->position() + _start) {
+ return true;
+ }
+ }
+
+ return false;
+}
+
void
Region::move_to_natural_position (void *src)
{
- if (!_playlist) {
+ boost::shared_ptr<Playlist> pl (playlist());
+
+ if (!pl) {
return;
}
-
+
boost::shared_ptr<Region> whole_file_region = get_parent();
if (whole_file_region) {
set_position (whole_file_region->position() + _start, src);
}
}
-
+
void
-Region::special_set_position (nframes_t pos)
+Region::special_set_position (framepos_t pos)
{
- /* this is used when creating a whole file region as
+ /* this is used when creating a whole file region as
a way to store its "natural" or "captured" position.
*/
+ _position = _position;
_position = pos;
}
void
-Region::set_position (nframes_t pos, void *src)
+Region::set_position_lock_style (PositionLockStyle ps)
{
- if (_flags & Locked) {
+ if (_position_lock_style != ps) {
+
+ boost::shared_ptr<Playlist> pl (playlist());
+
+ if (!pl) {
+ return;
+ }
+
+ _position_lock_style = ps;
+
+ if (_position_lock_style == MusicTime) {
+ _session.tempo_map().bbt_time (_position, _bbt_time);
+ }
+
+ send_change (Properties::position_lock_style);
+ }
+}
+
+void
+Region::update_position_after_tempo_map_change ()
+{
+ boost::shared_ptr<Playlist> pl (playlist());
+
+ if (!pl || _position_lock_style != MusicTime) {
+ return;
+ }
+
+ TempoMap& map (_session.tempo_map());
+ framepos_t pos = map.frame_time (_bbt_time);
+ set_position_internal (pos, false);
+}
+
+void
+Region::set_position (framepos_t pos, void* /*src*/)
+{
+ if (!can_move()) {
return;
}
+ set_position_internal (pos, true);
+}
+
+void
+Region::set_position_internal (framepos_t pos, bool allow_bbt_recompute)
+{
if (_position != pos) {
+ _last_position = _position;
_position = pos;
/* check that the new _position wouldn't make the current
- length impossible - if so, change the length.
+ length impossible - if so, change the length.
XXX is this the right thing to do?
*/
if (max_frames - _length < _position) {
+ _last_length = _length;
_length = max_frames - _position;
}
+
+ if (allow_bbt_recompute) {
+ recompute_position_from_lock_style ();
+ }
+
+ //invalidate_transients ();
}
/* do this even if the position is the same. this helps out
a GUI that has moved its representation already.
*/
-
- send_change (PositionChanged);
+ send_change (Properties::position);
}
void
-Region::set_position_on_top (nframes_t pos, void *src)
+Region::set_position_on_top (framepos_t pos, void* /*src*/)
{
- if (_flags & Locked) {
+ if (locked()) {
return;
}
if (_position != pos) {
+ _last_position = _position;
_position = pos;
}
- _playlist->raise_region_to_top (shared_from_this ());
+ boost::shared_ptr<Playlist> pl (playlist());
+
+ if (pl) {
+ pl->raise_region_to_top (shared_from_this ());
+ }
/* do this even if the position is the same. this helps out
a GUI that has moved its representation already.
*/
-
- send_change (PositionChanged);
+
+ send_change (Properties::position);
}
void
-Region::nudge_position (long n, void *src)
+Region::recompute_position_from_lock_style ()
{
- if (_flags & Locked) {
+ if (_position_lock_style == MusicTime) {
+ _session.tempo_map().bbt_time (_position, _bbt_time);
+ }
+}
+
+void
+Region::nudge_position (frameoffset_t n, void* /*src*/)
+{
+ if (locked()) {
return;
}
if (n == 0) {
return;
}
-
+
+ _last_position = _position;
+
if (n > 0) {
if (_position > max_frames - n) {
_position = max_frames;
_position += n;
}
} else {
- if (_position < (nframes_t) -n) {
+ if (_position < -n) {
_position = 0;
} else {
_position += n;
}
}
- send_change (PositionChanged);
+ send_change (Properties::position);
}
void
-Region::set_start (nframes_t pos, void *src)
+Region::set_ancestral_data (framepos_t s, framecnt_t l, float st, float sh)
{
- if (_flags & Locked) {
+ _ancestral_length = l;
+ _ancestral_start = s;
+ _stretch = st;
+ _shift = sh;
+}
+
+void
+Region::set_start (framepos_t pos, void* /*src*/)
+{
+ if (locked() || position_locked()) {
return;
}
/* This just sets the start, nothing else. It effectively shifts
}
_start = pos;
- _flags = Region::Flag (_flags & ~WholeFile);
+ _whole_file = false;
first_edit ();
+ invalidate_transients ();
- send_change (StartChanged);
+ send_change (Properties::start);
}
}
void
-Region::trim_start (nframes_t new_position, void *src)
+Region::trim_start (framepos_t new_position, void */*src*/)
{
- if (_flags & Locked) {
+ if (locked() || position_locked()) {
return;
}
- nframes_t new_start;
- int32_t start_shift;
-
+ framepos_t new_start;
+ frameoffset_t start_shift;
+
if (new_position > _position) {
start_shift = new_position - _position;
} else {
} else if (start_shift < 0) {
- if (_start < (nframes_t) -start_shift) {
+ if (_start < -start_shift) {
new_start = 0;
} else {
new_start = _start + start_shift;
if (new_start == _start) {
return;
}
-
+
_start = new_start;
- _flags = Region::Flag (_flags & ~WholeFile);
+ _whole_file = false;
first_edit ();
- send_change (StartChanged);
+ send_change (Properties::start);
}
void
-Region::trim_front (nframes_t new_position, void *src)
+Region::trim_front (framepos_t new_position, void *src)
{
- if (_flags & Locked) {
+ modify_front (new_position, false, src);
+}
+
+void
+Region::cut_front (nframes_t new_position, void *src)
+{
+ modify_front (new_position, true, src);
+}
+
+void
+Region::cut_end (nframes_t new_endpoint, void *src)
+{
+ modify_end (new_endpoint, true, src);
+}
+
+void
+Region::modify_front (nframes_t new_position, bool reset_fade, void *src)
+{
+ if (locked()) {
return;
}
if (new_position < end) { /* can't trim it zero or negative length */
- nframes_t newlen;
+ nframes_t newlen = 0;
+ nframes64_t delta = 0;
/* can't trim it back passed where source position zero is located */
new_position = max (new_position, source_zero);
-
if (new_position > _position) {
newlen = _length - (new_position - _position);
+ delta = -1 * (new_position - _position);
} else {
newlen = _length + (_position - new_position);
+ delta = _position - new_position;
}
trim_to_internal (new_position, newlen, src);
- if (!_frozen) {
+
+ if (reset_fade) {
+ _right_of_split = true;
+ }
+
+ if (!property_changes_suspended()) {
recompute_at_start ();
}
+
+ if (_transients.size() > 0){
+ adjust_transients(delta);
+ }
}
}
void
-Region::trim_end (nframes_t new_endpoint, void *src)
+Region::modify_end (nframes_t new_endpoint, bool reset_fade, void *src)
{
- if (_flags & Locked) {
+ if (locked()) {
return;
}
if (new_endpoint > _position) {
- trim_to_internal (_position, new_endpoint - _position, this);
- if (!_frozen) {
+ trim_to_internal (_position, new_endpoint - _position +1, this);
+ if (reset_fade) {
+ _left_of_split = true;
+ }
+ if (!property_changes_suspended()) {
recompute_at_end ();
}
}
}
+/** @param new_endpoint New region end point, such that, for example,
+ * a region at 0 of length 10 has an endpoint of 9.
+ */
+
void
-Region::trim_to (nframes_t position, nframes_t length, void *src)
+Region::trim_end (framepos_t new_endpoint, void* src)
{
- if (_flags & Locked) {
+ modify_end (new_endpoint, false, src);
+}
+
+void
+Region::trim_to (framepos_t position, framecnt_t length, void *src)
+{
+ if (locked()) {
return;
}
trim_to_internal (position, length, src);
- if (!_frozen) {
+ if (!property_changes_suspended()) {
recompute_at_start ();
recompute_at_end ();
}
}
void
-Region::trim_to_internal (nframes_t position, nframes_t length, void *src)
+Region::trim_to_internal (framepos_t position, framecnt_t length, void */*src*/)
{
- int32_t start_shift;
- nframes_t new_start;
+ frameoffset_t start_shift;
+ framepos_t new_start;
- if (_flags & Locked) {
+ if (locked()) {
return;
}
new_start = _start + start_shift;
}
-
} else if (start_shift < 0) {
- if (_start < (nframes_t) -start_shift) {
+ if (_start < -start_shift) {
new_start = 0;
} else {
new_start = _start + start_shift;
}
+
} else {
new_start = _start;
}
return;
}
- Change what_changed = Change (0);
+ PropertyChange what_changed;
if (_start != new_start) {
_start = new_start;
- what_changed = Change (what_changed|StartChanged);
+ what_changed.add (Properties::start);
}
if (_length != length) {
+ if (!property_changes_suspended()) {
+ _last_length = _length;
+ }
_length = length;
- what_changed = Change (what_changed|LengthChanged);
+ what_changed.add (Properties::length);
}
if (_position != position) {
+ if (!property_changes_suspended()) {
+ _last_position = _position;
+ }
_position = position;
- what_changed = Change (what_changed|PositionChanged);
+ what_changed.add (Properties::position);
}
-
- _flags = Region::Flag (_flags & ~WholeFile);
- if (what_changed & (StartChanged|LengthChanged)) {
+ _whole_file = false;
+
+ PropertyChange start_and_length;
+
+ start_and_length.add (Properties::start);
+ start_and_length.add (Properties::length);
+
+ if (what_changed.contains (start_and_length)) {
first_edit ();
- }
+ }
- if (what_changed) {
+ if (!what_changed.empty()) {
send_change (what_changed);
}
-}
+}
void
Region::set_hidden (bool yn)
{
if (hidden() != yn) {
+ _hidden = yn;
+ send_change (Properties::hidden);
+ }
+}
- if (yn) {
- _flags = Flag (_flags|Hidden);
- } else {
- _flags = Flag (_flags & ~Hidden);
- }
+void
+Region::set_whole_file (bool yn)
+{
+ _whole_file = yn;
+ /* no change signal */
+}
- send_change (HiddenChanged);
- }
+void
+Region::set_automatic (bool yn)
+{
+ _automatic = yn;
+ /* no change signal */
}
void
Region::set_muted (bool yn)
{
if (muted() != yn) {
-
- if (yn) {
- _flags = Flag (_flags|Muted);
- } else {
- _flags = Flag (_flags & ~Muted);
- }
-
- send_change (MuteChanged);
+ _muted = yn;
+ send_change (Properties::muted);
}
}
Region::set_opaque (bool yn)
{
if (opaque() != yn) {
- if (yn) {
- _flags = Flag (_flags|Opaque);
- } else {
- _flags = Flag (_flags & ~Opaque);
- }
- send_change (OpacityChanged);
+ _opaque = yn;
+ send_change (Properties::opaque);
}
}
Region::set_locked (bool yn)
{
if (locked() != yn) {
- if (yn) {
- _flags = Flag (_flags|Locked);
- } else {
- _flags = Flag (_flags & ~Locked);
- }
- send_change (LockChanged);
+ _locked = yn;
+ send_change (Properties::locked);
}
}
void
-Region::set_sync_position (nframes_t absolute_pos)
+Region::set_position_locked (bool yn)
{
- nframes_t file_pos;
+ if (position_locked() != yn) {
+ _position_locked = yn;
+ send_change (Properties::locked);
+ }
+}
- file_pos = _start + (absolute_pos - _position);
+void
+Region::set_sync_position (framepos_t absolute_pos)
+{
+ framepos_t const file_pos = _start + (absolute_pos - _position);
if (file_pos != _sync_position) {
-
+ _sync_marked = true;
_sync_position = file_pos;
- _flags = Flag (_flags|SyncMarked);
-
- if (!_frozen) {
+ if (!property_changes_suspended()) {
maybe_uncopy ();
}
- send_change (SyncOffsetChanged);
+ send_change (Properties::sync_position);
}
}
void
Region::clear_sync_position ()
{
- if (_flags & SyncMarked) {
- _flags = Flag (_flags & ~SyncMarked);
-
- if (!_frozen) {
+ if (sync_marked()) {
+ _sync_marked = false;
+ if (!property_changes_suspended()) {
maybe_uncopy ();
}
- send_change (SyncOffsetChanged);
+ send_change (Properties::sync_position);
}
}
-nframes_t
+framepos_t
Region::sync_offset (int& dir) const
{
/* returns the sync point relative the first frame of the region */
- if (_flags & SyncMarked) {
+ if (sync_marked()) {
if (_sync_position > _start) {
dir = 1;
- return _sync_position - _start;
+ return _sync_position - _start;
} else {
dir = -1;
return _start - _sync_position;
}
}
-nframes_t
-Region::adjust_to_sync (nframes_t pos)
+framepos_t
+Region::adjust_to_sync (framepos_t pos) const
{
int sync_dir;
- nframes_t offset = sync_offset (sync_dir);
-
+ frameoffset_t offset = sync_offset (sync_dir);
+
+ // cerr << "adjusting pos = " << pos << " to sync at " << _sync_position << " offset = " << offset << " with dir = " << sync_dir << endl;
+
if (sync_dir > 0) {
- if (max_frames - pos > offset) {
- pos += offset;
- }
- } else {
if (pos > offset) {
pos -= offset;
} else {
pos = 0;
}
+ } else {
+ if (max_frames - pos > offset) {
+ pos += offset;
+ }
}
return pos;
}
-nframes_t
+framepos_t
Region::sync_position() const
{
- if (_flags & SyncMarked) {
- return _sync_position;
+ if (sync_marked()) {
+ return _sync_position;
} else {
return _start;
}
}
-
void
Region::raise ()
{
- if (_playlist == 0) {
- return;
+ boost::shared_ptr<Playlist> pl (playlist());
+ if (pl) {
+ pl->raise_region (shared_from_this ());
}
-
- _playlist->raise_region (shared_from_this ());
}
void
Region::lower ()
{
- if (_playlist == 0) {
- return;
+ boost::shared_ptr<Playlist> pl (playlist());
+ if (pl) {
+ pl->lower_region (shared_from_this ());
}
-
- _playlist->lower_region (shared_from_this ());
}
+
void
Region::raise_to_top ()
{
-
- if (_playlist == 0) {
- return;
+ boost::shared_ptr<Playlist> pl (playlist());
+ if (pl) {
+ pl->raise_region_to_top (shared_from_this());
}
-
- _playlist->raise_region_to_top (shared_from_this());
}
void
Region::lower_to_bottom ()
{
- if (_playlist == 0) {
- return;
+ boost::shared_ptr<Playlist> pl (playlist());
+ if (pl) {
+ pl->lower_region_to_bottom (shared_from_this());
}
-
- _playlist->lower_region_to_bottom (shared_from_this());
}
void
{
if (_layer != l) {
_layer = l;
-
- send_change (LayerChanged);
+
+ send_change (Properties::layer);
}
}
XMLNode&
-Region::state (bool full_state)
+Region::state ()
{
XMLNode *node = new XMLNode ("Region");
char buf[64];
- char* fe;
+ char buf2[64];
+ LocaleGuard lg (X_("POSIX"));
+ const char* fe = NULL;
+
+ add_properties (*node);
_id.print (buf, sizeof (buf));
node->add_property ("id", buf);
- node->add_property ("name", _name);
- snprintf (buf, sizeof (buf), "%u", _start);
- node->add_property ("start", buf);
- snprintf (buf, sizeof (buf), "%u", _length);
- node->add_property ("length", buf);
- snprintf (buf, sizeof (buf), "%u", _position);
- node->add_property ("position", buf);
-
+ node->add_property ("type", _type.to_string());
+
switch (_first_edit) {
case EditChangesNothing:
fe = X_("nothing");
case EditChangesID:
fe = X_("id");
break;
+ default: /* should be unreachable but makes g++ happy */
+ fe = X_("nothing");
+ break;
}
- node->add_property ("first_edit", fe);
+ node->add_property ("first-edit", fe);
/* note: flags are stored by derived classes */
- snprintf (buf, sizeof (buf), "%d", (int) _layer);
- node->add_property ("layer", buf);
- snprintf (buf, sizeof (buf), "%u", _sync_position);
- node->add_property ("sync-position", buf);
+ if (_position_lock_style != AudioTime) {
+ stringstream str;
+ str << _bbt_time;
+ node->add_property ("bbt-position", str.str());
+ }
+
+ for (uint32_t n=0; n < _sources.size(); ++n) {
+ snprintf (buf2, sizeof(buf2), "source-%d", n);
+ _sources[n]->id().print (buf, sizeof(buf));
+ node->add_property (buf2, buf);
+ }
+
+ for (uint32_t n=0; n < _master_sources.size(); ++n) {
+ snprintf (buf2, sizeof(buf2), "master-source-%d", n);
+ _master_sources[n]->id().print (buf, sizeof (buf));
+ node->add_property (buf2, buf);
+ }
+
+ if (_extra_xml) {
+ node->add_child_copy (*_extra_xml);
+ }
return *node;
}
XMLNode&
Region::get_state ()
{
- return state (true);
+ return state ();
}
int
-Region::set_live_state (const XMLNode& node, Change& what_changed, bool send)
+Region::set_state (const XMLNode& node, int version)
{
- const XMLNodeList& nlist = node.children();
- const XMLProperty *prop;
- nframes_t val;
-
- /* this is responsible for setting those aspects of Region state
- that are mutable after construction.
- */
+ PropertyChange what_changed;
+ return _set_state (node, version, what_changed, true);
+}
- if ((prop = node.property ("name")) == 0) {
- error << _("XMLNode describing a Region is incomplete (no name)") << endmsg;
- return -1;
- }
+int
+Region::_set_state (const XMLNode& node, int version, PropertyChange& what_changed, bool send)
+{
+ const XMLProperty* prop;
- _name = prop->value();
+ what_changed = set_values (node);
- if ((prop = node.property ("start")) != 0) {
- sscanf (prop->value().c_str(), "%" PRIu32, &val);
- if (val != _start) {
- what_changed = Change (what_changed|StartChanged);
- _start = val;
- }
- } else {
- _start = 0;
- }
-
- if ((prop = node.property ("length")) != 0) {
- sscanf (prop->value().c_str(), "%" PRIu32, &val);
- if (val != _length) {
- what_changed = Change (what_changed|LengthChanged);
- _length = val;
- }
- } else {
- _length = 1;
+ if ((prop = node.property (X_("id")))) {
+ _id = prop->value();
}
- if ((prop = node.property ("position")) != 0) {
- sscanf (prop->value().c_str(), "%" PRIu32, &val);
- if (val != _position) {
- what_changed = Change (what_changed|PositionChanged);
- _position = val;
- }
- } else {
- _position = 0;
- }
-
- if ((prop = node.property ("layer")) != 0) {
- layer_t x;
- x = (layer_t) atoi (prop->value().c_str());
- if (x != _layer) {
- what_changed = Change (what_changed|LayerChanged);
- _layer = x;
+ if (_position_lock_style == MusicTime) {
+ if ((prop = node.property ("bbt-position")) == 0) {
+ /* missing BBT info, revert to audio time locking */
+ _position_lock_style = AudioTime;
+ } else {
+ if (sscanf (prop->value().c_str(), "%d|%d|%d",
+ &_bbt_time.bars,
+ &_bbt_time.beats,
+ &_bbt_time.ticks) != 3) {
+ _position_lock_style = AudioTime;
+ }
}
- } else {
- _layer = 0;
}
- if ((prop = node.property ("sync-position")) != 0) {
- sscanf (prop->value().c_str(), "%" PRIu32, &val);
- if (val != _sync_position) {
- what_changed = Change (what_changed|SyncOffsetChanged);
- _sync_position = val;
- }
- } else {
- _sync_position = _start;
+ /* fix problems with old sessions corrupted by impossible
+ values for _stretch or _shift
+ */
+ if (_stretch == 0.0f) {
+ _stretch = 1.0f;
}
-
- /* XXX FIRST EDIT !!! */
- /* note: derived classes set flags */
-
- if (_extra_xml) {
- delete _extra_xml;
- _extra_xml = 0;
+ if (_shift == 0.0f) {
+ _shift = 1.0f;
}
+ const XMLNodeList& nlist = node.children();
+
for (XMLNodeConstIterator niter = nlist.begin(); niter != nlist.end(); ++niter) {
-
+
XMLNode *child;
-
+
child = (*niter);
-
- if (child->name () == "extra") {
+
+ if (child->name () == "Extra") {
+ delete _extra_xml;
_extra_xml = new XMLNode (*child);
break;
}
if (send) {
send_change (what_changed);
}
-
- return 0;
-}
-
-int
-Region::set_state (const XMLNode& node)
-{
- const XMLProperty *prop;
- Change what_changed = Change (0);
-
- /* ID is not allowed to change, ever */
-
- if ((prop = node.property ("id")) == 0) {
- error << _("Session: XMLNode describing a Region is incomplete (no id)") << endmsg;
- return -1;
- }
-
- _id = prop->value();
- _first_edit = EditChangesNothing;
+ /* Quick fix for 2.x sessions when region is muted */
+ if ((prop = node.property (X_("flags")))) {
+ if (string::npos != prop->value().find("Muted")){
+ set_muted (true);
+ }
+ }
- set_live_state (node, what_changed, true);
return 0;
}
void
-Region::freeze ()
+Region::suspend_property_changes ()
{
- _frozen++;
+ Stateful::suspend_property_changes ();
+ _last_length = _length;
+ _last_position = _position;
}
void
-Region::thaw (const string& why)
+Region::mid_thaw (const PropertyChange& what_changed)
{
- Change what_changed = Change (0);
-
- {
- Glib::Mutex::Lock lm (lock);
-
- if (_frozen && --_frozen > 0) {
- return;
- }
-
- if (pending_changed) {
- what_changed = pending_changed;
- pending_changed = Change (0);
- }
- }
-
- if (what_changed == Change (0)) {
- return;
- }
-
- if (what_changed & LengthChanged) {
- if (what_changed & PositionChanged) {
+ if (what_changed.contains (Properties::length)) {
+ if (what_changed.contains (Properties::position)) {
recompute_at_start ();
- }
+ }
recompute_at_end ();
}
-
- StateChanged (what_changed);
}
void
-Region::send_change (Change what_changed)
+Region::send_change (const PropertyChange& what_changed)
{
- {
- Glib::Mutex::Lock lm (lock);
- if (_frozen) {
- pending_changed = Change (pending_changed|what_changed);
- return;
- }
+ if (what_changed.empty()) {
+ return;
}
- StateChanged (what_changed);
+ Stateful::send_change (what_changed);
+
+ if (!_no_property_changes) {
+
+ /* Try and send a shared_pointer unless this is part of the constructor.
+ If so, do nothing.
+ */
+
+ try {
+ boost::shared_ptr<Region> rptr = shared_from_this();
+ RegionPropertyChanged (rptr, what_changed);
+ } catch (...) {
+ /* no shared_ptr available, relax; */
+ }
+ }
}
void
{
return size_equivalent (other) && source_equivalent (other) && _name == other->_name;
}
+
+void
+Region::source_deleted (boost::weak_ptr<Source>)
+{
+ drop_sources ();
+
+ if (!_session.deletion_in_progress()) {
+ /* this is a very special case: at least one of the region's
+ sources has bee deleted, so invalidate all references to
+ ourselves. Do NOT do this during session deletion, because
+ then we run the risk that this will actually result
+ in this object being deleted (as refcnt goes to zero)
+ while emitting DropReferences.
+ */
+
+ drop_references ();
+ }
+}
+
+vector<string>
+Region::master_source_names ()
+{
+ SourceList::iterator i;
+
+ vector<string> names;
+ for (i = _master_sources.begin(); i != _master_sources.end(); ++i) {
+ names.push_back((*i)->name());
+ }
+
+ return names;
+}
+
+void
+Region::set_master_sources (const SourceList& srcs)
+{
+ for (SourceList::const_iterator i = _master_sources.begin (); i != _master_sources.end(); ++i) {
+ (*i)->dec_use_count ();
+ }
+
+ _master_sources = srcs;
+ assert (_sources.size() == _master_sources.size());
+
+ for (SourceList::const_iterator i = _master_sources.begin (); i != _master_sources.end(); ++i) {
+ (*i)->inc_use_count ();
+ }
+}
+
+bool
+Region::source_equivalent (boost::shared_ptr<const Region> other) const
+{
+ if (!other)
+ return false;
+
+ if ((_sources.size() != other->_sources.size()) ||
+ (_master_sources.size() != other->_master_sources.size())) {
+ return false;
+ }
+
+ SourceList::const_iterator i;
+ SourceList::const_iterator io;
+
+ for (i = _sources.begin(), io = other->_sources.begin(); i != _sources.end() && io != other->_sources.end(); ++i, ++io) {
+ if ((*i)->id() != (*io)->id()) {
+ return false;
+ }
+ }
+
+ for (i = _master_sources.begin(), io = other->_master_sources.begin(); i != _master_sources.end() && io != other->_master_sources.end(); ++i, ++io) {
+ if ((*i)->id() != (*io)->id()) {
+ return false;
+ }
+ }
+
+ return true;
+}
+
+bool
+Region::uses_source (boost::shared_ptr<const Source> source) const
+{
+ for (SourceList::const_iterator i = _sources.begin(); i != _sources.end(); ++i) {
+ if (*i == source) {
+ return true;
+ }
+ }
+ return false;
+}
+
+sframes_t
+Region::source_length(uint32_t n) const
+{
+ assert (n < _sources.size());
+ return _sources[n]->length(_position - _start);
+}
+
+bool
+Region::verify_length (framecnt_t len)
+{
+ if (source() && (source()->destructive() || source()->length_mutable())) {
+ return true;
+ }
+
+ framecnt_t maxlen = 0;
+
+ for (uint32_t n = 0; n < _sources.size(); ++n) {
+ maxlen = max (maxlen, source_length(n) - _start);
+ }
+
+ len = min (len, maxlen);
+
+ return true;
+}
+
+bool
+Region::verify_start_and_length (framepos_t new_start, framecnt_t& new_length)
+{
+ if (source() && (source()->destructive() || source()->length_mutable())) {
+ return true;
+ }
+
+ framecnt_t maxlen = 0;
+
+ for (uint32_t n = 0; n < _sources.size(); ++n) {
+ maxlen = max (maxlen, source_length(n) - new_start);
+ }
+
+ new_length = min (new_length, maxlen);
+
+ return true;
+}
+
+bool
+Region::verify_start (framepos_t pos)
+{
+ if (source() && (source()->destructive() || source()->length_mutable())) {
+ return true;
+ }
+
+ for (uint32_t n = 0; n < _sources.size(); ++n) {
+ if (pos > source_length(n) - _length) {
+ return false;
+ }
+ }
+ return true;
+}
+
+bool
+Region::verify_start_mutable (framepos_t& new_start)
+{
+ if (source() && (source()->destructive() || source()->length_mutable())) {
+ return true;
+ }
+
+ for (uint32_t n = 0; n < _sources.size(); ++n) {
+ if (new_start > source_length(n) - _length) {
+ new_start = source_length(n) - _length;
+ }
+ }
+ return true;
+}
+
+boost::shared_ptr<Region>
+Region::get_parent() const
+{
+ boost::shared_ptr<Playlist> pl (playlist());
+
+ if (pl) {
+ boost::shared_ptr<Region> r;
+ boost::shared_ptr<Region const> grrr2 = boost::dynamic_pointer_cast<Region const> (shared_from_this());
+
+ if (grrr2 && (r = _session.find_whole_file_parent (grrr2))) {
+ return boost::static_pointer_cast<Region> (r);
+ }
+ }
+
+ return boost::shared_ptr<Region>();
+}
+
+int
+Region::apply (Filter& filter)
+{
+ return filter.run (shared_from_this());
+}
+
+
+void
+Region::invalidate_transients ()
+{
+ _valid_transients = false;
+ _transients.clear ();
+
+ send_change (PropertyChange (Properties::valid_transients));
+}
+
+void
+Region::drop_sources ()
+{
+ for (SourceList::const_iterator i = _sources.begin (); i != _sources.end(); ++i) {
+ (*i)->dec_use_count ();
+ }
+
+ _sources.clear ();
+
+ for (SourceList::const_iterator i = _master_sources.begin (); i != _master_sources.end(); ++i) {
+ (*i)->dec_use_count ();
+ }
+
+ _master_sources.clear ();
+}
+
+void
+Region::use_sources (SourceList const & s)
+{
+ set<boost::shared_ptr<Source> > unique_srcs;
+
+ for (SourceList::const_iterator i = s.begin (); i != s.end(); ++i) {
+
+ _sources.push_back (*i);
+ (*i)->inc_use_count ();
+ _master_sources.push_back (*i);
+ (*i)->inc_use_count ();
+
+ /* connect only once to DropReferences, even if sources are replicated
+ */
+
+ if (unique_srcs.find (*i) == unique_srcs.end ()) {
+ unique_srcs.insert (*i);
+ (*i)->DropReferences.connect_same_thread (*this, boost::bind (&Region::source_deleted, this, boost::weak_ptr<Source>(*i)));
+ }
+ }
+}