diff --git a/drivers/portaudio/portaudio_driver.h b/drivers/portaudio/portaudio_driver.h
new file mode 100644
index 0000000..6904325
--- /dev/null
+++ b/drivers/portaudio/portaudio_driver.h
@@ -0,0 +1,59 @@
+/*
+    Copyright © Grame 2003
+
+    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.
+    
+    Grame Research Laboratory, 9, rue du Garet 69001 Lyon - France
+    grame@rd.grame.fr
+*/
+
+#ifndef __jack_portaudio_driver_h__
+#define __jack_portaudio_driver_h__
+
+
+#include <jack/types.h>
+#include <jack/hardware.h>
+#include <jack/driver.h>
+#include <jack/memops.h>
+#include <jack/jack.h>
+#include <jack/internal.h>
+
+#include <PortAudio.h>
+
+typedef struct {
+
+        JACK_DRIVER_DECL
+
+        struct _jack_engine *engine;
+        
+        jack_nframes_t    frame_rate;
+        jack_nframes_t    frames_per_cycle;
+        unsigned long     user_nperiods;
+        
+        channel_t    playback_nchannels;
+        channel_t    capture_nchannels;
+        
+        jack_client_t *client;
+        JSList   *capture_ports;
+        JSList   *playback_ports;
+
+        float *inPortAudio;
+	float *outPortAudio;
+         
+        PortAudioStream*   stream;
+
+} portaudio_driver_t;
+
+#endif /* __jack_portaudio_driver_h__ */