rollback to 3428, before the mysterious removal of libs/* at 3431/3432

git-svn-id: svn://localhost/ardour2/branches/3.0@3435 d708f5d6-7413-0410-9779-e7cbd77b26cf

1 files changed, 318 insertions, 0 deletions

diff --git a/libs/ardour/midi_playlist.cc b/libs/ardour/midi_playlist.cc
new file mode 100644
index 0000000000..d258d49524
--- /dev/null
+++ b/libs/ardour/midi_playlist.cc
@@ -0,0 +1,318 @@
+/*
+    Copyright (C) 2006 Paul Davis 
+ 	Written by Dave Robillard, 2006
+
+    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 <cassert>
+
+#include <algorithm>
+
+#include <stdlib.h>
+
+#include <sigc++/bind.h>
+
+#include <ardour/types.h>
+#include <ardour/configuration.h>
+#include <ardour/midi_playlist.h>
+#include <ardour/midi_region.h>
+#include <ardour/session.h>
+#include <ardour/midi_ring_buffer.h>
+
+#include <pbd/error.h>
+
+#include "i18n.h"
+
+using namespace ARDOUR;
+using namespace sigc;
+using namespace std;
+
+MidiPlaylist::MidiPlaylist (Session& session, const XMLNode& node, bool hidden)
+		: Playlist (session, node, DataType::MIDI, hidden)
+		, _note_mode(Sustained)
+{
+	const XMLProperty* prop = node.property("type");
+	assert(prop && DataType(prop->value()) == DataType::MIDI);
+
+	in_set_state++;
+	set_state (node);
+	in_set_state--;
+}
+
+MidiPlaylist::MidiPlaylist (Session& session, string name, bool hidden)
+		: Playlist (session, name, DataType::MIDI, hidden)
+{
+}
+
+MidiPlaylist::MidiPlaylist (boost::shared_ptr<const MidiPlaylist> other, string name, bool hidden)
+		: Playlist (other, name, hidden)
+{
+	throw; // nope
+
+	/*
+	list<Region*>::const_iterator in_o  = other.regions.begin();
+	list<Region*>::iterator in_n = regions.begin();
+
+	while (in_o != other.regions.end()) {
+		MidiRegion *ar = dynamic_cast<MidiRegion *>( (*in_o) );
+
+		for (list<Crossfade *>::const_iterator xfades = other._crossfades.begin(); xfades != other._crossfades.end(); ++xfades) {
+			if ( &(*xfades)->in() == ar) {
+				// We found one! Now copy it!
+
+				list<Region*>::const_iterator out_o = other.regions.begin();
+				list<Region*>::const_iterator out_n = regions.begin();
+
+				while (out_o != other.regions.end()) {
+
+					MidiRegion *ar2 = dynamic_cast<MidiRegion *>( (*out_o) );
+
+					if ( &(*xfades)->out() == ar2) {
+						MidiRegion *in  = dynamic_cast<MidiRegion*>( (*in_n) );
+						MidiRegion *out = dynamic_cast<MidiRegion*>( (*out_n) );
+						Crossfade *new_fade = new Crossfade( *(*xfades), in, out);
+						add_crossfade(*new_fade);
+						break;
+					}
+
+					out_o++;
+					out_n++;
+				}
+				//				cerr << "HUH!? second region in the crossfade not found!" << endl;
+			}
+		}
+
+		in_o++;
+		in_n++;
+	}
+*/
+}
+
+MidiPlaylist::MidiPlaylist (boost::shared_ptr<const MidiPlaylist> other, nframes_t start, nframes_t dur, string name, bool hidden)
+		: Playlist (other, start, dur, name, hidden)
+{
+	/* this constructor does NOT notify others (session) */
+}
+
+MidiPlaylist::~MidiPlaylist ()
+{
+  	GoingAway (); /* EMIT SIGNAL */
+	
+	/* drop connections to signals */
+	
+	notify_callbacks ();
+}
+
+struct RegionSortByLayer {
+    bool operator() (boost::shared_ptr<Region> a, boost::shared_ptr<Region> b) {
+	    return a->layer() < b->layer();
+    }
+};
+
+/** Returns the number of frames in time duration read (eg could be large when 0 events are read) */
+nframes_t
+MidiPlaylist::read (MidiRingBuffer& dst, nframes_t start,
+                     nframes_t dur, unsigned chan_n)
+{
+	/* this function is never called from a realtime thread, so
+	   its OK to block (for short intervals).
+	*/
+
+	Glib::Mutex::Lock rm (region_lock);
+
+	nframes_t end = start + dur - 1;
+
+	_read_data_count = 0;
+
+	// relevent regions overlapping start <--> end
+	vector<boost::shared_ptr<Region> > regs;
+
+	for (RegionList::iterator i = regions.begin(); i != regions.end(); ++i) {
+
+		if ((*i)->coverage (start, end) != OverlapNone) {
+			regs.push_back(*i);
+		}
+	}
+
+	RegionSortByLayer layer_cmp;
+	sort(regs.begin(), regs.end(), layer_cmp);
+
+	for (vector<boost::shared_ptr<Region> >::iterator i = regs.begin(); i != regs.end(); ++i) {
+		// FIXME: ensure time is monotonic here?
+		boost::shared_ptr<MidiRegion> mr = boost::dynamic_pointer_cast<MidiRegion>(*i);
+		if (mr) {
+			mr->read_at (dst, start, dur, chan_n, _note_mode);
+			_read_data_count += mr->read_data_count();
+		}
+	}
+
+	return dur;
+}
+
+
+void
+MidiPlaylist::remove_dependents (boost::shared_ptr<Region> region)
+{
+	/* MIDI regions have no dependents (crossfades) */
+}
+
+
+void
+MidiPlaylist::refresh_dependents (boost::shared_ptr<Region> r)
+{
+	/* MIDI regions have no dependents (crossfades) */
+}
+
+void
+MidiPlaylist::finalize_split_region (boost::shared_ptr<Region> original, boost::shared_ptr<Region> left, boost::shared_ptr<Region> right)
+{
+	/* No MIDI crossfading (yet?), so nothing to do here */
+}
+
+void
+MidiPlaylist::check_dependents (boost::shared_ptr<Region> r, bool norefresh)
+{
+	/* MIDI regions have no dependents (crossfades) */
+}
+
+
+int
+MidiPlaylist::set_state (const XMLNode& node)
+{
+	in_set_state++;
+	freeze ();
+
+	Playlist::set_state (node);
+
+	thaw();
+	in_set_state--;
+
+	return 0;
+}
+
+void
+MidiPlaylist::dump () const
+{
+	boost::shared_ptr<Region> r;
+
+	cerr << "Playlist \"" << _name << "\" " << endl
+	<< regions.size() << " regions "
+	<< endl;
+
+	for (RegionList::const_iterator i = regions.begin(); i != regions.end(); ++i) {
+		r = *i;
+		cerr << "  " << r->name() << " @ " << r << " ["
+		<< r->start() << "+" << r->length()
+		<< "] at "
+		<< r->position()
+		<< " on layer "
+		<< r->layer ()
+		<< endl;
+	}
+}
+
+bool
+MidiPlaylist::destroy_region (boost::shared_ptr<Region> region)
+{
+	boost::shared_ptr<MidiRegion> r = boost::dynamic_pointer_cast<MidiRegion> (region);
+	bool changed = false;
+
+	if (r == 0) {
+		PBD::fatal << _("programming error: non-midi Region passed to remove_overlap in midi playlist")
+		<< endmsg;
+		/*NOTREACHED*/
+		return false;
+	}
+
+	{
+		RegionLock rlock (this);
+		RegionList::iterator i;
+		RegionList::iterator tmp;
+
+		for (i = regions.begin(); i != regions.end(); ) {
+
+			tmp = i;
+			++tmp;
+
+			if ((*i) == region) {
+				regions.erase (i);
+				changed = true;
+			}
+
+			i = tmp;
+		}
+	}
+
+
+	if (changed) {
+		/* overload this, it normally means "removed", not destroyed */
+		notify_region_removed (region);
+	}
+
+	return changed;
+}
+
+set<Parameter>
+MidiPlaylist::contained_automation()
+{
+	/* this function is never called from a realtime thread, so
+	   its OK to block (for short intervals).
+	*/
+
+	Glib::Mutex::Lock rm (region_lock);
+
+	set<Parameter> ret;
+
+	for (RegionList::const_iterator r = regions.begin(); r != regions.end(); ++r) {
+		boost::shared_ptr<MidiRegion> mr = boost::dynamic_pointer_cast<MidiRegion>(*r);
+
+		for (Automatable::Controls::iterator c = mr->controls().begin();
+				c != mr->controls().end(); ++c) {
+			ret.insert(c->first);
+		}
+	}
+
+	return ret;
+}
+
+
+bool
+MidiPlaylist::region_changed (Change what_changed, boost::shared_ptr<Region> region)
+{
+	if (in_flush || in_set_state) {
+		return false;
+	}
+
+	// Feeling rather uninterested today, but thanks for the heads up anyway!
+	
+	Change our_interests = Change (/*MidiRegion::FadeInChanged|
+	                               MidiRegion::FadeOutChanged|
+	                               MidiRegion::FadeInActiveChanged|
+	                               MidiRegion::FadeOutActiveChanged|
+	                               MidiRegion::EnvelopeActiveChanged|
+	                               MidiRegion::ScaleAmplitudeChanged|
+	                               MidiRegion::EnvelopeChanged*/);
+	bool parent_wants_notify;
+
+	parent_wants_notify = Playlist::region_changed (what_changed, region);
+
+	if ((parent_wants_notify || (what_changed & our_interests))) {
+		notify_modified ();
+	}
+
+	return true;
+}
+