1 files changed, 105 insertions, 0 deletions
diff --git a/libs/backends/portaudio/winmmemidi_input_device.h b/libs/backends/portaudio/winmmemidi_input_device.h
new file mode 100644
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+++ b/libs/backends/portaudio/winmmemidi_input_device.h
@@ -0,0 +1,105 @@
+/*
+ * Copyright (C) 2015 Tim Mayberry <mojofunk@gmail.com>
+ *
+ * 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 WINMME_MIDI_INPUT_DEVICE_H
+#define WINMME_MIDI_INPUT_DEVICE_H
+
+#include <windows.h>
+#include <mmsystem.h>
+
+#include <stdint.h>
+
+#include <string>
+
+#include <boost/scoped_array.hpp>
+#include <boost/scoped_ptr.hpp>
+
+#include <pbd/ringbuffer.h>
+
+namespace ARDOUR {
+
+class WinMMEMidiInputDevice {
+public: // ctors
+	WinMMEMidiInputDevice (int index);
+
+	~WinMMEMidiInputDevice ();
+
+public: // methods
+
+	/**
+	 * Dequeue events that have accumulated in winmm_input_callback.
+	 *
+	 * This is called by the audio processing thread/callback to transfer events
+	 * into midi ports before processing.
+	 */
+	bool dequeue_midi_event (uint64_t timestamp_start,
+	                         uint64_t timestamp_end,
+	                         uint64_t& timestamp,
+	                         uint8_t* data,
+	                         size_t& size);
+
+	bool start ();
+	bool stop ();
+
+	void set_enabled (bool enable);
+
+	bool get_enabled ();
+
+	/**
+	 * @return Name of midi device
+	 */
+	std::string name () const { return m_name; }
+
+private: // methods
+	bool open (UINT index, std::string& error_msg);
+	bool close (std::string& error_msg);
+
+	bool add_sysex_buffer (std::string& error_msg);
+	bool set_device_name (UINT index);
+
+	std::string get_error_string (MMRESULT error_code);
+
+	static void CALLBACK winmm_input_callback (HMIDIIN handle,
+	                                           UINT msg,
+	                                           DWORD_PTR instance,
+	                                           DWORD_PTR midi_msg,
+	                                           DWORD timestamp);
+
+	void handle_short_msg (const uint8_t* midi_data, uint32_t timestamp);
+
+	void handle_sysex_msg (MIDIHDR* const midi_header, uint32_t timestamp);
+
+	bool enqueue_midi_msg (const uint8_t* midi_data, size_t size, uint32_t timestamp);
+
+private: // data
+	HMIDIIN m_handle;
+	MIDIHDR m_sysex_header;
+
+	bool m_started;
+	bool m_enabled;
+
+	std::string m_name;
+
+	// can't use unique_ptr yet
+	boost::scoped_ptr<RingBuffer<uint8_t> > m_midi_buffer;
+	boost::scoped_array<uint8_t> m_sysex_buffer;
+};
+
+}
+
+#endif // WINMME_MIDI_INPUT_DEVICE_H