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diff --git a/libs/backends/wavesaudio/waves_midi_device_manager.h b/libs/backends/wavesaudio/waves_midi_device_manager.h
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+/*
+ Copyright (C) 2013 Gorobchenko Dmytro
+
+ 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.
+
+*/
+
+#ifndef __libardour_waves_midi_device_manager_h__
+#define __libardour_waves_midi_device_manager_h__
+
+#include "waves_midi_device.h"
+
+namespace ARDOUR {
+
+class WavesAudioBackend;
+
+class WavesMidiDeviceManager {
+public:
+ WavesMidiDeviceManager (WavesAudioBackend& audiobackend);
+ ~WavesMidiDeviceManager ();
+
+ inline const std::vector<WavesMidiDevice *>& devices () const
+ {
+ return _devices;
+ }
+
+ int start ();
+ int stop ();
+ int stream (bool yn);
+ int is_streaming () { return _streaming; }
+ void do_read ();
+ void do_write ();
+
+private:
+
+ int _create_devices ();
+ void _close_devices ();
+
+ int _delete_devices ();
+ static void __portmidi_callback (PtTimestamp timestamp, void * userData);
+ void _portmidi_callback (PtTimestamp timestamp);
+ /** __get_time_ms is given to Pm_Open functions (see WavesMidiDevice.cc)
+ * to provide the time in milliseconds using the time of audio
+ * transport.
+ * time_info is a pointer on the backend instance, which agregates the
+ * audio and miditransports. It's not checked for correctness to consume
+ * no time.
+ */
+ static PmTimestamp __get_time_ms (void *time_info);
+
+ WavesMidiDevice* _get_device (const std::string& name);
+
+ std::vector<WavesMidiDevice*> _devices; // Vector for midi devices
+ bool _active;
+ bool _streaming;
+
+ size_t _input_device_count;
+ size_t _output_device_count;
+ WavesAudioBackend& _audiobackend;
+};
+
+} // namespace
+
+#endif /* __libardour_waves_midi_device_manager_h__ */
+