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/*
* 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;
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
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