/*

The PACH project: https://github.com/g40/pach

Copyright (c) 2011-2023, Jerry Evans

Redistribution and use in source and binary forms, with or without

modification, are permitted provided that the following conditions are

met:

1. Redistributions of source code must retain the above copyright notice,

this list of conditions and the following disclaimer.

2. Redistributions in binary form must reproduce the above copyright

notice, this list of conditions and the following disclaimer in the

documentation and/or other materials provided with the distribution.

3. The name of the author may not be used to endorse or promote products

derived from this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR

IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES

OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE

DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,

INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES

(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR

SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)

HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,

STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN

ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE

POSSIBILITY OF SUCH DAMAGE.

*/

#pragma once

#include <string>

#include <map>

#include <rtmidi/rtmidi.h>

// just enumerate devices and get names/index

class RtMidiEnumerator

{

public:

//

typedef unsigned int DeviceIndex;

static const unsigned int INVALID_INDEX = 0xFFFF;

typedef std::map<DeviceIndex, std::string>::iterator index_iterator;

typedef std::map<DeviceIndex, std::string>::const_iterator const_index_iterator;

typedef std::map<std::string, DeviceIndex>::iterator name_iterator;

private:

// map index to device name

std::map<DeviceIndex, std::string> m_indexMapper;

std::map<std::string, DeviceIndex> m_nameMapper;

//

DeviceIndex m_ipId{ 0 };

DeviceIndex m_opId{ 0 };

public:

//

RtMidiEnumerator() {}

//

size_t enumerate()

{

//

m_indexMapper.clear();

m_nameMapper.clear();

//

RtMidiIn rti;

//

unsigned int nPorts = rti.getPortCount();

if (nPorts == 0) {

return 0;

}

//

for (DeviceIndex ndx = 0; ndx < nPorts; ndx++)

{

//

std::string ipName = rti.getPortName(ndx);

//

m_indexMapper[ndx] = ipName;

m_nameMapper[ipName] = ndx;

}

//

return m_indexMapper.size();

}

//

index_iterator find(DeviceIndex key) { return m_indexMapper.find(key); }

index_iterator begin() { return m_indexMapper.begin(); }

index_iterator end() { return m_indexMapper.end(); }

// given a naame, return the index

DeviceIndex index(const std::string& key)

{

name_iterator it = m_nameMapper.find(key);

if (it == m_nameMapper.end())

return INVALID_INDEX;

return it->second;

}

const_index_iterator find(DeviceIndex key) const { return m_indexMapper.find(key); }

const_index_iterator begin() const { return m_indexMapper.begin(); }

const_index_iterator end() const { return m_indexMapper.end(); }

};

// manage a MIDI source

class RtMidiSource

{

public:

//

typedef unsigned int DeviceIndex;

private:

//

std::unique_ptr<RtMidiIn> m_ip;

//

// non-copyable

RtMidiSource(const RtMidiSource&) = delete;

RtMidiSource& operator=(const RtMidiSource&) = delete;

public:

//

RtMidiSource() {}

//

virtual ~RtMidiSource() { close(); }

// open the device and set message filters

bool open(DeviceIndex di, bool midiSysex = true, bool midiTime = true, bool midiSense = true)

{

if (m_ip)

return false;

m_ip = std::unique_ptr<RtMidiIn>(new RtMidiIn());

if (!m_ip)

return false;

m_ip->openPort(di);

//

m_ip->ignoreTypes(midiSysex, midiTime , midiSense);

//

return true;

}

//

bool close()

{

if (!m_ip)

return false;

m_ip->closePort();

m_ip = nullptr;

return true;

}

// get raw data. return timestamp

double get(std::vector<unsigned char>& data)

{

if (!m_ip)

return 0;

double ts = m_ip->getMessage(&data);

return ts;

}

};