Index: head/audio/Makefile
===================================================================
--- head/audio/Makefile
+++ head/audio/Makefile
@@ -485,6 +485,7 @@
     SUBDIR += mctoolame-encoder
     SUBDIR += mda-lv2
     SUBDIR += mhwaveedit
+    SUBDIR += midi-matrix-lv2
     SUBDIR += midipp
     SUBDIR += mikmod
     SUBDIR += milkytracker
Index: head/audio/midi-matrix-lv2/Makefile
===================================================================
--- head/audio/midi-matrix-lv2/Makefile
+++ head/audio/midi-matrix-lv2/Makefile
@@ -0,0 +1,25 @@
+# Created by: Yuri Victorovich <yuri@rawbw.com>
+# $FreeBSD$
+
+PORTNAME=	midi-matrix
+PORTVERSION=	0.20.0
+CATEGORIES=	audio
+MASTER_SITES=	https://gitlab.com/OpenMusicKontrollers/midi_matrix.lv2/repository/archive.tar.gz?ref=${PORTVERSION}&dummy=/
+PKGNAMESUFFIX=	-lv2
+
+MAINTAINER=	yuri@rawbw.com
+COMMENT=	LV2 'Midi Matrix' plugin bundle: 'Channel Filter'
+
+LICENSE=	ART20
+LICENSE_FILE=	${WRKSRC}/COPYING
+
+BUILD_DEPENDS=	lv2>0:audio/lv2
+
+USES=		cmake pkgconfig
+USE_XORG=	x11 xext
+USE_GL=		gl glu
+
+post-extract:
+	@${MV} ${WRKDIR}/midi_matrix* ${WRKDIR}/${PORTNAME}-${PORTVERSION}
+
+.include <bsd.port.mk>
Index: head/audio/midi-matrix-lv2/distinfo
===================================================================
--- head/audio/midi-matrix-lv2/distinfo
+++ head/audio/midi-matrix-lv2/distinfo
@@ -0,0 +1,3 @@
+TIMESTAMP = 1502216898
+SHA256 (midi-matrix-0.20.0.tar.gz) = 1ff8478d2610c4b216a02052bde24929a54d89af31eb0c1a3e7e1ff5d07b7980
+SIZE (midi-matrix-0.20.0.tar.gz) = 1719808
Index: head/audio/midi-matrix-lv2/files/patch-pugl_pugl_pugl__x11.c
===================================================================
--- head/audio/midi-matrix-lv2/files/patch-pugl_pugl_pugl__x11.c
+++ head/audio/midi-matrix-lv2/files/patch-pugl_pugl_pugl__x11.c
@@ -0,0 +1,11 @@
+--- pugl/pugl/pugl_x11.c.orig	2017-05-16 21:46:21 UTC
++++ pugl/pugl/pugl_x11.c
+@@ -648,7 +648,7 @@ puglPasteFromClipboard(PuglView* view, s
+ 		if(  (xevent.xselection.selection == impl->clipboard)
+ 			&& (xevent.xselection.target == impl->utf8_string)
+ 			&& (xevent.xselection.property == XA_PRIMARY) ) {
+-			ulong nitems, rem;
++			uint32_t nitems, rem;
+ 			int format;
+ 			uint8_t* data;
+ 			Atom type;
Index: head/audio/midi-matrix-lv2/pkg-descr
===================================================================
--- head/audio/midi-matrix-lv2/pkg-descr
+++ head/audio/midi-matrix-lv2/pkg-descr
@@ -0,0 +1,9 @@
+The Midi Matrix (Channel Filter) is a 3-in-1 filter plugin with a simple UI
+enabling you to easily accomplish:
+* MIDI channel filtering (e.g. blocking of specific channels)
+* MIDI channel multiplication (e.g. send events from channel X to channels
+  X, Y and Z)
+* MIDI channel rerouting (e.g send events from channel X to channel Y)
+* And any possible combination thereof
+
+WWW: http://open-music-kontrollers.ch/lv2/midi_matrix
Index: head/audio/midi-matrix-lv2/pkg-plist
===================================================================
--- head/audio/midi-matrix-lv2/pkg-plist
+++ head/audio/midi-matrix-lv2/pkg-plist
@@ -0,0 +1,6 @@
+lib/lv2/midi_matrix.lv2/Cousine-Regular.ttf
+lib/lv2/midi_matrix.lv2/manifest.ttl
+lib/lv2/midi_matrix.lv2/midi_matrix.so
+lib/lv2/midi_matrix.lv2/midi_matrix.ttl
+lib/lv2/midi_matrix.lv2/midi_matrix_ui.so
+lib/lv2/midi_matrix.lv2/midi_matrix_ui.ttl