mirror of https://github.com/probonopd/MiniDexed
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
89 lines
2.2 KiB
89 lines
2.2 KiB
//
|
|
// udpmidi.cpp
|
|
//
|
|
// mt32-pi - A baremetal MIDI synthesizer for Raspberry Pi
|
|
// Copyright (C) 2020-2023 Dale Whinham <daleyo@gmail.com>
|
|
//
|
|
// This file is part of mt32-pi.
|
|
//
|
|
// mt32-pi 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 3 of the License, or (at your option) any later
|
|
// version.
|
|
//
|
|
// mt32-pi 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
|
|
// mt32-pi. If not, see <http://www.gnu.org/licenses/>.
|
|
//
|
|
|
|
#include <circle/logger.h>
|
|
#include <circle/net/in.h>
|
|
#include <circle/net/netsubsystem.h>
|
|
#include <circle/sched/scheduler.h>
|
|
|
|
#include "udpmidi.h"
|
|
|
|
LOGMODULE("udpmidi");
|
|
|
|
constexpr u16 MIDIPort = 1999;
|
|
|
|
CUDPMIDIReceiver::CUDPMIDIReceiver(CUDPMIDIHandler* pHandler)
|
|
: CTask(TASK_STACK_SIZE, true),
|
|
m_pMIDISocket(nullptr),
|
|
m_MIDIBuffer{0},
|
|
m_pHandler(pHandler)
|
|
{
|
|
}
|
|
|
|
CUDPMIDIReceiver::~CUDPMIDIReceiver()
|
|
{
|
|
if (m_pMIDISocket)
|
|
delete m_pMIDISocket;
|
|
}
|
|
|
|
bool CUDPMIDIReceiver::Initialize()
|
|
{
|
|
assert(m_pMIDISocket == nullptr);
|
|
|
|
CNetSubSystem* const pNet = CNetSubSystem::Get();
|
|
|
|
if ((m_pMIDISocket = new CSocket(pNet, IPPROTO_UDP)) == nullptr)
|
|
return false;
|
|
|
|
if (m_pMIDISocket->Bind(MIDIPort) != 0)
|
|
{
|
|
LOGERR("Couldn't bind to port %d", MIDIPort);
|
|
return false;
|
|
}
|
|
|
|
// We started as a suspended task; run now that initialization is successful
|
|
Start();
|
|
|
|
return true;
|
|
}
|
|
|
|
void CUDPMIDIReceiver::Run()
|
|
{
|
|
assert(m_pHandler != nullptr);
|
|
assert(m_pMIDISocket != nullptr);
|
|
|
|
CScheduler* const pScheduler = CScheduler::Get();
|
|
|
|
while (true)
|
|
{
|
|
// Blocking call
|
|
const int nMIDIResult = m_pMIDISocket->Receive(m_MIDIBuffer, sizeof(m_MIDIBuffer), 0);
|
|
|
|
if (nMIDIResult < 0)
|
|
LOGERR("MIDI socket receive error: %d", nMIDIResult);
|
|
else if (nMIDIResult > 0)
|
|
m_pHandler->OnUDPMIDIDataReceived(m_MIDIBuffer, nMIDIResult);
|
|
|
|
// Allow other tasks to run
|
|
pScheduler->Yield();
|
|
}
|
|
} |