mirror of https://github.com/probonopd/MiniDexed
probonopd
1 day ago
committed by
GitHub
commit
5209d1df8b
@ -0,0 +1,48 @@ |
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//
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// midi.h
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//
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// MiniDexed - Dexed FM synthesizer for bare metal Raspberry Pi
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// Copyright (C) 2025 The MiniDexed Team
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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//
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#ifndef _midi_h |
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#define _midi_h |
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#define MIDI_NOTE_OFF 0b1000 |
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#define MIDI_NOTE_ON 0b1001 |
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#define MIDI_AFTERTOUCH 0b1010 // TODO
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#define MIDI_CHANNEL_AFTERTOUCH 0b1101 // right now Synth_Dexed just manage Channel Aftertouch not Polyphonic AT -> 0b1010
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#define MIDI_CONTROL_CHANGE 0b1011 |
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#define MIDI_CC_BANK_SELECT_MSB 0 |
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#define MIDI_CC_MODULATION 1 |
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#define MIDI_CC_BREATH_CONTROLLER 2 |
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#define MIDI_CC_FOOT_PEDAL 4 |
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#define MIDI_CC_VOLUME 7 |
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#define MIDI_CC_PAN_POSITION 10 |
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#define MIDI_CC_EXPRESSION 11 |
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#define MIDI_CC_BANK_SELECT_LSB 32 |
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#define MIDI_CC_BANK_SUSTAIN 64 |
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#define MIDI_CC_RESONANCE 71 |
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#define MIDI_CC_FREQUENCY_CUTOFF 74 |
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#define MIDI_CC_REVERB_LEVEL 91 |
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#define MIDI_CC_DETUNE_LEVEL 94 |
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#define MIDI_CC_ALL_SOUND_OFF 120 |
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#define MIDI_CC_ALL_NOTES_OFF 123 |
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#define MIDI_PROGRAM_CHANGE 0b1100 |
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#define MIDI_PITCH_BEND 0b1110 |
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#endif |
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@ -0,0 +1,874 @@ |
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//
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// applemidi.cpp
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//
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// mt32-pi - A baremetal MIDI synthesizer for Raspberry Pi
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// Copyright (C) 2020-2023 Dale Whinham <daleyo@gmail.com>
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//
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// This file is part of mt32-pi.
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//
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// mt32-pi is free software: you can redistribute it and/or modify it under the
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// terms of the GNU General Public License as published by the Free Software
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// Foundation, either version 3 of the License, or (at your option) any later
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// version.
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//
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// mt32-pi is distributed in the hope that it will be useful, but WITHOUT ANY
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// WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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// FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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// details.
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//
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// You should have received a copy of the GNU General Public License along with
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// mt32-pi. If not, see <http://www.gnu.org/licenses/>.
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//
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#include <circle/logger.h> |
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#include <circle/macros.h> |
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#include <circle/net/in.h> |
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#include <circle/net/netsubsystem.h> |
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#include <circle/sched/scheduler.h> |
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#include <circle/timer.h> |
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#include <circle/util.h> |
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#include "applemidi.h" |
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#include "byteorder.h" |
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// #define APPLEMIDI_DEBUG
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LOGMODULE("applemidi"); |
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constexpr u16 ControlPort = 5004; |
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constexpr u16 MIDIPort = ControlPort + 1; |
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constexpr u16 AppleMIDISignature = 0xFFFF; |
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constexpr u8 AppleMIDIVersion = 2; |
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constexpr u8 RTPMIDIPayloadType = 0x61; |
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constexpr u8 RTPMIDIVersion = 2; |
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// Arbitrary value
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constexpr size_t MaxNameLength = 256; |
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// Timeout period for invitation (5 seconds in 100 microsecond units)
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constexpr unsigned int InvitationTimeout = 5 * 10000; |
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// Timeout period for sync packets (60 seconds in 100 microsecond units)
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constexpr unsigned int SyncTimeout = 60 * 10000; |
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// Receiver feedback packet frequency (1 second in 100 microsecond units)
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constexpr unsigned int ReceiverFeedbackPeriod = 1 * 10000; |
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constexpr u16 CommandWord(const char Command[2]) { return Command[0] << 8 | Command[1]; } |
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enum TAppleMIDICommand : u16 |
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{ |
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Invitation = CommandWord("IN"), |
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InvitationAccepted = CommandWord("OK"), |
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InvitationRejected = CommandWord("NO"), |
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Sync = CommandWord("CK"), |
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ReceiverFeedback = CommandWord("RS"), |
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EndSession = CommandWord("BY"), |
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}; |
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struct TAppleMIDISession |
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{ |
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u16 nSignature; |
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u16 nCommand; |
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u32 nVersion; |
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u32 nInitiatorToken; |
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u32 nSSRC; |
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char Name[MaxNameLength]; |
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} |
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PACKED; |
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// The Name field is optional
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constexpr size_t NamelessSessionPacketSize = sizeof(TAppleMIDISession) - sizeof(TAppleMIDISession::Name); |
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struct TAppleMIDISync |
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{ |
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u16 nSignature; |
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u16 nCommand; |
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u32 nSSRC; |
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u8 nCount; |
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u8 Padding[3]; |
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u64 Timestamps[3]; |
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} |
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PACKED; |
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struct TAppleMIDIReceiverFeedback |
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{ |
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u16 nSignature; |
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u16 nCommand; |
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u32 nSSRC; |
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u32 nSequence; |
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} |
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PACKED; |
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struct TRTPMIDI |
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{ |
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u16 nFlags; |
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u16 nSequence; |
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u32 nTimestamp; |
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u32 nSSRC; |
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} |
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PACKED; |
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u64 GetSyncClock() |
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{ |
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static const u64 nStartTime = CTimer::GetClockTicks(); |
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const u64 nMicrosSinceEpoch = CTimer::GetClockTicks(); |
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// Units of 100 microseconds
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return (nMicrosSinceEpoch - nStartTime ) / 100; |
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} |
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bool ParseInvitationPacket(const u8* pBuffer, size_t nSize, TAppleMIDISession* pOutPacket) |
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{ |
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const TAppleMIDISession* const pInPacket = reinterpret_cast<const TAppleMIDISession*>(pBuffer); |
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if (nSize < NamelessSessionPacketSize) |
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return false; |
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const u16 nSignature = ntohs(pInPacket->nSignature); |
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if (nSignature != AppleMIDISignature) |
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return false; |
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const u16 nCommand = ntohs(pInPacket->nCommand); |
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if (nCommand != Invitation) |
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return false; |
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const u32 nVersion = ntohl(pInPacket->nVersion); |
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if (nVersion != AppleMIDIVersion) |
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return false; |
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pOutPacket->nSignature = nSignature; |
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pOutPacket->nCommand = nCommand; |
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pOutPacket->nVersion = nVersion; |
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pOutPacket->nInitiatorToken = ntohl(pInPacket->nInitiatorToken); |
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pOutPacket->nSSRC = ntohl(pInPacket->nSSRC); |
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if (nSize > NamelessSessionPacketSize) |
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strncpy(pOutPacket->Name, pInPacket->Name, sizeof(pOutPacket->Name)); |
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else |
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strncpy(pOutPacket->Name, "<unknown>", sizeof(pOutPacket->Name)); |
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return true; |
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} |
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bool ParseEndSessionPacket(const u8* pBuffer, size_t nSize, TAppleMIDISession* pOutPacket) |
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{ |
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const TAppleMIDISession* const pInPacket = reinterpret_cast<const TAppleMIDISession*>(pBuffer); |
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if (nSize < NamelessSessionPacketSize) |
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return false; |
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const u16 nSignature = ntohs(pInPacket->nSignature); |
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if (nSignature != AppleMIDISignature) |
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return false; |
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const u16 nCommand = ntohs(pInPacket->nCommand); |
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if (nCommand != EndSession) |
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return false; |
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const u32 nVersion = ntohl(pInPacket->nVersion); |
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if (nVersion != AppleMIDIVersion) |
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return false; |
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pOutPacket->nSignature = nSignature; |
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pOutPacket->nCommand = nCommand; |
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pOutPacket->nVersion = nVersion; |
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pOutPacket->nInitiatorToken = ntohl(pInPacket->nInitiatorToken); |
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pOutPacket->nSSRC = ntohl(pInPacket->nSSRC); |
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return true; |
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} |
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bool ParseSyncPacket(const u8* pBuffer, size_t nSize, TAppleMIDISync* pOutPacket) |
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{ |
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const TAppleMIDISync* const pInPacket = reinterpret_cast<const TAppleMIDISync*>(pBuffer); |
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if (nSize < sizeof(TAppleMIDISync)) |
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return false; |
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const u32 nSignature = ntohs(pInPacket->nSignature); |
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if (nSignature != AppleMIDISignature) |
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return false; |
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const u32 nCommand = ntohs(pInPacket->nCommand); |
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if (nCommand != Sync) |
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return false; |
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pOutPacket->nSignature = nSignature; |
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pOutPacket->nCommand = nCommand; |
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pOutPacket->nSSRC = ntohl(pInPacket->nSSRC); |
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pOutPacket->nCount = pInPacket->nCount; |
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pOutPacket->Timestamps[0] = ntohll(pInPacket->Timestamps[0]); |
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pOutPacket->Timestamps[1] = ntohll(pInPacket->Timestamps[1]); |
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pOutPacket->Timestamps[2] = ntohll(pInPacket->Timestamps[2]); |
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return true; |
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} |
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u8 ParseMIDIDeltaTime(const u8* pBuffer) |
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{ |
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u8 nLength = 0; |
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u32 nDeltaTime = 0; |
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while (nLength < 4) |
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{ |
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nDeltaTime <<= 7; |
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nDeltaTime |= pBuffer[nLength] & 0x7F; |
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// Upper bit not set; end of timestamp
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if ((pBuffer[nLength++] & (1 << 7)) == 0) |
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break; |
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} |
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return nLength; |
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} |
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size_t ParseSysExCommand(const u8* pBuffer, size_t nSize, CAppleMIDIHandler* pHandler) |
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{ |
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size_t nBytesParsed = 1; |
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const u8 nHead = pBuffer[0]; |
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u8 nTail = 0; |
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while (nBytesParsed < nSize && !(nTail == 0xF0 || nTail == 0xF7 || nTail == 0xF4)) |
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nTail = pBuffer[nBytesParsed++]; |
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size_t nReceiveLength = nBytesParsed; |
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// First segmented SysEx packet
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if (nHead == 0xF0 && nTail == 0xF0) |
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{ |
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#ifdef APPLEMIDI_DEBUG |
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LOGNOTE("Received segmented SysEx (first)"); |
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#endif |
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--nReceiveLength; |
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} |
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// Middle segmented SysEx packet
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else if (nHead == 0xF7 && nTail == 0xF0) |
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{ |
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#ifdef APPLEMIDI_DEBUG |
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LOGNOTE("Received segmented SysEx (middle)"); |
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#endif |
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++pBuffer; |
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nBytesParsed -= 2; |
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} |
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// Last segmented SysEx packet
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else if (nHead == 0xF7 && nTail == 0xF7) |
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{ |
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#ifdef APPLEMIDI_DEBUG |
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LOGNOTE("Received segmented SysEx (last)"); |
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#endif |
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++pBuffer; |
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--nReceiveLength; |
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} |
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// Cancelled segmented SysEx packet
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else if (nHead == 0xF7 && nTail == 0xF4) |
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{ |
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#ifdef APPLEMIDI_DEBUG |
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LOGNOTE("Received cancelled SysEx"); |
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#endif |
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nReceiveLength = 1; |
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} |
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#ifdef APPLEMIDI_DEBUG |
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else |
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{ |
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LOGNOTE("Received complete SysEx"); |
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} |
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#endif |
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pHandler->OnAppleMIDIDataReceived(pBuffer, nReceiveLength); |
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return nBytesParsed; |
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} |
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size_t ParseMIDICommand(const u8* pBuffer, size_t nSize, u8& nRunningStatus, CAppleMIDIHandler* pHandler) |
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{ |
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size_t nBytesParsed = 0; |
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u8 nByte = pBuffer[0]; |
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// System Real-Time message - single byte, handle immediately
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// Can appear anywhere in the stream, even in between status/data bytes
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if (nByte >= 0xF8) |
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{ |
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// Ignore undefined System Real-Time
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if (nByte != 0xF9 && nByte != 0xFD) |
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pHandler->OnAppleMIDIDataReceived(&nByte, 1); |
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return 1; |
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} |
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// Is it a status byte?
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if (nByte & 0x80) |
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{ |
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// Update running status if non Real-Time System status
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if (nByte < 0xF0) |
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nRunningStatus = nByte; |
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else |
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nRunningStatus = 0; |
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++nBytesParsed; |
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} |
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else |
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{ |
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// First byte not a status byte and no running status - invalid
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if (!nRunningStatus) |
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return 0; |
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// Use running status
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nByte = nRunningStatus; |
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} |
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// Channel messages
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if (nByte < 0xF0) |
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{ |
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// How many data bytes?
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switch (nByte & 0xF0) |
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{ |
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case 0x80: // Note off
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case 0x90: // Note on
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case 0xA0: // Polyphonic key pressure/aftertouch
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case 0xB0: // Control change
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case 0xE0: // Pitch bend
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nBytesParsed += 2; |
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break; |
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case 0xC0: // Program change
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case 0xD0: // Channel pressure/aftertouch
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nBytesParsed += 1; |
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break; |
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} |
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// Handle command
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pHandler->OnAppleMIDIDataReceived(pBuffer, nBytesParsed); |
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return nBytesParsed; |
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} |
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// System common commands
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switch (nByte) |
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{ |
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case 0xF0: // Start of System Exclusive
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case 0xF7: // End of Exclusive
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return ParseSysExCommand(pBuffer, nSize, pHandler); |
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case 0xF1: // MIDI Time Code Quarter Frame
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case 0xF3: // Song Select
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++nBytesParsed; |
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break; |
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case 0xF2: // Song Position Pointer
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nBytesParsed += 2; |
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break; |
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} |
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pHandler->OnAppleMIDIDataReceived(pBuffer, nBytesParsed); |
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return nBytesParsed; |
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} |
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bool ParseMIDICommandSection(const u8* pBuffer, size_t nSize, CAppleMIDIHandler* pHandler) |
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{ |
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// Must have at least a header byte and a single status byte
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if (nSize < 2) |
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return false; |
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size_t nMIDICommandsProcessed = 0; |
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size_t nBytesRemaining = nSize - 1; |
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u8 nRunningStatus = 0; |
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const u8 nMIDIHeader = pBuffer[0]; |
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const u8* pMIDICommands = pBuffer + 1; |
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// Lower 4 bits of the header is length
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u16 nMIDICommandLength = nMIDIHeader & 0x0F; |
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// If B flag is set, length value is 12 bits
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if (nMIDIHeader & (1 << 7)) |
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{ |
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nMIDICommandLength <<= 8; |
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nMIDICommandLength |= pMIDICommands[0]; |
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++pMIDICommands; |
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--nBytesRemaining; |
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} |
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if (nMIDICommandLength > nBytesRemaining) |
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{ |
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LOGERR("Invalid MIDI command length"); |
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return false; |
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} |
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|
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// Begin decoding the command list
|
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while (nMIDICommandLength) |
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{ |
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// If Z flag is set, first list entry is a delta time
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if (nMIDICommandsProcessed || nMIDIHeader & (1 << 5)) |
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{ |
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const u8 nBytesParsed = ParseMIDIDeltaTime(pMIDICommands); |
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nMIDICommandLength -= nBytesParsed; |
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pMIDICommands += nBytesParsed; |
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} |
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|
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if (nMIDICommandLength) |
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{ |
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const size_t nBytesParsed = ParseMIDICommand(pMIDICommands, nMIDICommandLength, nRunningStatus, pHandler); |
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nMIDICommandLength -= nBytesParsed; |
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pMIDICommands += nBytesParsed; |
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++nMIDICommandsProcessed; |
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} |
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} |
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|
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return true; |
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} |
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|
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bool ParseMIDIPacket(const u8* pBuffer, size_t nSize, TRTPMIDI* pOutPacket, CAppleMIDIHandler* pHandler) |
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{ |
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assert(pHandler != nullptr); |
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|
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const TRTPMIDI* const pInPacket = reinterpret_cast<const TRTPMIDI*>(pBuffer); |
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const u16 nRTPFlags = ntohs(pInPacket->nFlags); |
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|
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// Check size (RTP-MIDI header plus MIDI command section header)
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if (nSize < sizeof(TRTPMIDI) + 1) |
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return false; |
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|
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// Check version
|
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if (((nRTPFlags >> 14) & 0x03) != RTPMIDIVersion) |
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return false; |
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|
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// Ensure no CSRC identifiers
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if (((nRTPFlags >> 8) & 0x0F) != 0) |
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return false; |
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|
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// Check payload type
|
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if ((nRTPFlags & 0xFF) != RTPMIDIPayloadType) |
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return false; |
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|
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pOutPacket->nFlags = nRTPFlags; |
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pOutPacket->nSequence = ntohs(pInPacket->nSequence); |
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pOutPacket->nTimestamp = ntohl(pInPacket->nTimestamp); |
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pOutPacket->nSSRC = ntohl(pInPacket->nSSRC); |
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|
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// RTP-MIDI variable-length header
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const u8* const pMIDICommandSection = pBuffer + sizeof(TRTPMIDI); |
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size_t nRemaining = nSize - sizeof(TRTPMIDI); |
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return ParseMIDICommandSection(pMIDICommandSection, nRemaining, pHandler); |
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} |
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|
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CAppleMIDIParticipant::CAppleMIDIParticipant(CBcmRandomNumberGenerator* pRandom, CAppleMIDIHandler* pHandler) |
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: CTask(TASK_STACK_SIZE, true), |
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|
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m_pRandom(pRandom), |
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|
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m_pControlSocket(nullptr), |
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m_pMIDISocket(nullptr), |
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|
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m_nForeignControlPort(0), |
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m_nForeignMIDIPort(0), |
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m_nInitiatorControlPort(0), |
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m_nInitiatorMIDIPort(0), |
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m_ControlBuffer{0}, |
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m_MIDIBuffer{0}, |
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|
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m_nControlResult(0), |
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m_nMIDIResult(0), |
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|
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m_pHandler(pHandler), |
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|
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m_State(TState::ControlInvitation), |
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|
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m_nInitiatorToken(0), |
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m_nInitiatorSSRC(0), |
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m_nSSRC(0), |
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m_nLastMIDISequenceNumber(0), |
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|
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m_nOffsetEstimate(0), |
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m_nLastSyncTime(0), |
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|
||||
m_nSequence(0), |
||||
m_nLastFeedbackSequence(0), |
||||
m_nLastFeedbackTime(0) |
||||
{ |
||||
} |
||||
|
||||
CAppleMIDIParticipant::~CAppleMIDIParticipant() |
||||
{ |
||||
if (m_pControlSocket) |
||||
delete m_pControlSocket; |
||||
|
||||
if (m_pMIDISocket) |
||||
delete m_pMIDISocket; |
||||
} |
||||
|
||||
bool CAppleMIDIParticipant::Initialize() |
||||
{ |
||||
assert(m_pControlSocket == nullptr); |
||||
assert(m_pMIDISocket == nullptr); |
||||
|
||||
CNetSubSystem* const pNet = CNetSubSystem::Get(); |
||||
|
||||
if ((m_pControlSocket = new CSocket(pNet, IPPROTO_UDP)) == nullptr) |
||||
return false; |
||||
|
||||
if ((m_pMIDISocket = new CSocket(pNet, IPPROTO_UDP)) == nullptr) |
||||
return false; |
||||
|
||||
if (m_pControlSocket->Bind(ControlPort) != 0) |
||||
{ |
||||
LOGERR("Couldn't bind to port %d", ControlPort); |
||||
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 CAppleMIDIParticipant::Run() |
||||
{ |
||||
assert(m_pControlSocket != nullptr); |
||||
assert(m_pMIDISocket != nullptr); |
||||
|
||||
CScheduler* const pScheduler = CScheduler::Get(); |
||||
|
||||
while (true) |
||||
{ |
||||
if ((m_nControlResult = m_pControlSocket->ReceiveFrom(m_ControlBuffer, sizeof(m_ControlBuffer), MSG_DONTWAIT, &m_ForeignControlIPAddress, &m_nForeignControlPort)) < 0) |
||||
LOGERR("Control socket receive error: %d", m_nControlResult); |
||||
|
||||
if ((m_nMIDIResult = m_pMIDISocket->ReceiveFrom(m_MIDIBuffer, sizeof(m_MIDIBuffer), MSG_DONTWAIT, &m_ForeignMIDIIPAddress, &m_nForeignMIDIPort)) < 0) |
||||
LOGERR("MIDI socket receive error: %d", m_nMIDIResult); |
||||
|
||||
switch (m_State) |
||||
{ |
||||
case TState::ControlInvitation: |
||||
ControlInvitationState(); |
||||
break; |
||||
|
||||
case TState::MIDIInvitation: |
||||
MIDIInvitationState(); |
||||
break; |
||||
|
||||
case TState::Connected: |
||||
ConnectedState(); |
||||
break; |
||||
} |
||||
|
||||
// Allow other tasks to run
|
||||
pScheduler->Yield(); |
||||
} |
||||
} |
||||
|
||||
void CAppleMIDIParticipant::ControlInvitationState() |
||||
{ |
||||
TAppleMIDISession SessionPacket; |
||||
|
||||
if (m_nControlResult == 0) |
||||
return; |
||||
|
||||
if (!ParseInvitationPacket(m_ControlBuffer, m_nControlResult, &SessionPacket)) |
||||
{ |
||||
LOGERR("Unexpected packet"); |
||||
return; |
||||
} |
||||
|
||||
#ifdef APPLEMIDI_DEBUG |
||||
LOGNOTE("<-- Control invitation"); |
||||
#endif |
||||
|
||||
// Store initiator details
|
||||
m_InitiatorIPAddress.Set(m_ForeignControlIPAddress); |
||||
m_nInitiatorControlPort = m_nForeignControlPort; |
||||
m_nInitiatorToken = SessionPacket.nInitiatorToken; |
||||
m_nInitiatorSSRC = SessionPacket.nSSRC; |
||||
|
||||
// Generate random SSRC and accept
|
||||
m_nSSRC = m_pRandom->GetNumber(); |
||||
if (!SendAcceptInvitationPacket(m_pControlSocket, &m_InitiatorIPAddress, m_nInitiatorControlPort)) |
||||
{ |
||||
LOGERR("Couldn't accept control invitation"); |
||||
return; |
||||
} |
||||
|
||||
m_nLastSyncTime = GetSyncClock(); |
||||
m_State = TState::MIDIInvitation; |
||||
} |
||||
|
||||
void CAppleMIDIParticipant::MIDIInvitationState() |
||||
{ |
||||
TAppleMIDISession SessionPacket; |
||||
|
||||
if (m_nControlResult > 0) |
||||
{ |
||||
if (ParseInvitationPacket(m_ControlBuffer, m_nControlResult, &SessionPacket)) |
||||
{ |
||||
// Unexpected peer; reject invitation
|
||||
if (m_ForeignControlIPAddress != m_InitiatorIPAddress || m_nForeignControlPort != m_nInitiatorControlPort) |
||||
SendRejectInvitationPacket(m_pControlSocket, &m_ForeignControlIPAddress, m_nForeignControlPort, SessionPacket.nInitiatorToken); |
||||
else |
||||
LOGERR("Unexpected packet"); |
||||
} |
||||
} |
||||
|
||||
if (m_nMIDIResult > 0) |
||||
{ |
||||
if (!ParseInvitationPacket(m_MIDIBuffer, m_nMIDIResult, &SessionPacket)) |
||||
{ |
||||
LOGERR("Unexpected packet"); |
||||
return; |
||||
} |
||||
|
||||
// Unexpected peer; reject invitation
|
||||
if (m_ForeignMIDIIPAddress != m_InitiatorIPAddress) |
||||
{ |
||||
SendRejectInvitationPacket(m_pMIDISocket, &m_ForeignMIDIIPAddress, m_nForeignMIDIPort, SessionPacket.nInitiatorToken); |
||||
return; |
||||
} |
||||
|
||||
#ifdef APPLEMIDI_DEBUG |
||||
LOGNOTE("<-- MIDI invitation"); |
||||
#endif |
||||
|
||||
m_nInitiatorMIDIPort = m_nForeignMIDIPort; |
||||
|
||||
if (SendAcceptInvitationPacket(m_pMIDISocket, &m_InitiatorIPAddress, m_nInitiatorMIDIPort)) |
||||
{ |
||||
CString IPAddressString; |
||||
m_InitiatorIPAddress.Format(&IPAddressString); |
||||
LOGNOTE("Connection to %s (%s) established", SessionPacket.Name, static_cast<const char*>(IPAddressString)); |
||||
m_nLastSyncTime = GetSyncClock(); |
||||
m_State = TState::Connected; |
||||
m_pHandler->OnAppleMIDIConnect(&m_InitiatorIPAddress, SessionPacket.Name); |
||||
} |
||||
else |
||||
{ |
||||
LOGERR("Couldn't accept MIDI invitation"); |
||||
Reset(); |
||||
} |
||||
} |
||||
|
||||
// Timeout
|
||||
else if ((GetSyncClock() - m_nLastSyncTime) > InvitationTimeout) |
||||
{ |
||||
LOGERR("MIDI port invitation timed out"); |
||||
Reset(); |
||||
} |
||||
} |
||||
|
||||
void CAppleMIDIParticipant::ConnectedState() |
||||
{ |
||||
TAppleMIDISession SessionPacket; |
||||
TRTPMIDI MIDIPacket; |
||||
TAppleMIDISync SyncPacket; |
||||
|
||||
if (m_nControlResult > 0) |
||||
{ |
||||
if (ParseEndSessionPacket(m_ControlBuffer, m_nControlResult, &SessionPacket)) |
||||
{ |
||||
#ifdef APPLEMIDI_DEBUG |
||||
LOGNOTE("<-- End session"); |
||||
#endif |
||||
|
||||
if (m_ForeignControlIPAddress == m_InitiatorIPAddress && |
||||
m_nForeignControlPort == m_nInitiatorControlPort && |
||||
SessionPacket.nSSRC == m_nInitiatorSSRC) |
||||
{ |
||||
LOGNOTE("Initiator ended session"); |
||||
m_pHandler->OnAppleMIDIDisconnect(&m_InitiatorIPAddress, SessionPacket.Name); |
||||
Reset(); |
||||
return; |
||||
} |
||||
} |
||||
else if (ParseInvitationPacket(m_ControlBuffer, m_nControlResult, &SessionPacket)) |
||||
{ |
||||
// Unexpected peer; reject invitation
|
||||
if (m_ForeignControlIPAddress != m_InitiatorIPAddress || m_nForeignControlPort != m_nInitiatorControlPort) |
||||
SendRejectInvitationPacket(m_pControlSocket, &m_ForeignControlIPAddress, m_nForeignControlPort, SessionPacket.nInitiatorToken); |
||||
else |
||||
LOGERR("Unexpected packet"); |
||||
} |
||||
} |
||||
|
||||
if (m_nMIDIResult > 0) |
||||
{ |
||||
if (m_ForeignMIDIIPAddress != m_InitiatorIPAddress || m_nForeignMIDIPort != m_nInitiatorMIDIPort) |
||||
LOGERR("Unexpected packet"); |
||||
else if (ParseMIDIPacket(m_MIDIBuffer, m_nMIDIResult, &MIDIPacket, m_pHandler)) |
||||
m_nSequence = MIDIPacket.nSequence; |
||||
else if (ParseSyncPacket(m_MIDIBuffer, m_nMIDIResult, &SyncPacket)) |
||||
{ |
||||
#ifdef APPLEMIDI_DEBUG |
||||
LOGNOTE("<-- Sync %d", SyncPacket.nCount); |
||||
#endif |
||||
|
||||
if (SyncPacket.nSSRC == m_nInitiatorSSRC && (SyncPacket.nCount == 0 || SyncPacket.nCount == 2)) |
||||
{ |
||||
if (SyncPacket.nCount == 0) |
||||
SendSyncPacket(SyncPacket.Timestamps[0], GetSyncClock()); |
||||
else if (SyncPacket.nCount == 2) |
||||
{ |
||||
m_nOffsetEstimate = ((SyncPacket.Timestamps[2] + SyncPacket.Timestamps[0]) / 2) - SyncPacket.Timestamps[1]; |
||||
#ifdef APPLEMIDI_DEBUG |
||||
LOGNOTE("Offset estimate: %llu", m_nOffsetEstimate); |
||||
#endif |
||||
} |
||||
|
||||
m_nLastSyncTime = GetSyncClock(); |
||||
} |
||||
else |
||||
{ |
||||
LOGERR("Unexpected sync packet"); |
||||
} |
||||
} |
||||
} |
||||
|
||||
const u64 nTicks = GetSyncClock(); |
||||
|
||||
if ((nTicks - m_nLastFeedbackTime) > ReceiverFeedbackPeriod) |
||||
{ |
||||
if (m_nSequence != m_nLastFeedbackSequence) |
||||
{ |
||||
SendFeedbackPacket(); |
||||
m_nLastFeedbackSequence = m_nSequence; |
||||
} |
||||
m_nLastFeedbackTime = nTicks; |
||||
} |
||||
|
||||
if ((nTicks - m_nLastSyncTime) > SyncTimeout) |
||||
{ |
||||
LOGERR("Initiator timed out"); |
||||
Reset(); |
||||
} |
||||
} |
||||
|
||||
void CAppleMIDIParticipant::Reset() |
||||
{ |
||||
m_State = TState::ControlInvitation; |
||||
|
||||
m_nInitiatorToken = 0; |
||||
m_nInitiatorSSRC = 0; |
||||
m_nSSRC = 0; |
||||
m_nLastMIDISequenceNumber = 0; |
||||
|
||||
m_nOffsetEstimate = 0; |
||||
m_nLastSyncTime = 0; |
||||
|
||||
m_nSequence = 0; |
||||
m_nLastFeedbackSequence = 0; |
||||
m_nLastFeedbackTime = 0; |
||||
} |
||||
|
||||
bool CAppleMIDIParticipant::SendPacket(CSocket* pSocket, CIPAddress* pIPAddress, u16 nPort, const void* pData, size_t nSize) |
||||
{ |
||||
const int nResult = pSocket->SendTo(pData, nSize, MSG_DONTWAIT, *pIPAddress, nPort); |
||||
|
||||
if (nResult < 0) |
||||
{ |
||||
LOGERR("Send failure, error code: %d", nResult); |
||||
return false; |
||||
} |
||||
|
||||
if (static_cast<size_t>(nResult) != nSize) |
||||
{ |
||||
LOGERR("Send failure, only %d/%d bytes sent", nResult, nSize); |
||||
return false; |
||||
} |
||||
|
||||
#ifdef APPLEMIDI_DEBUG |
||||
LOGNOTE("Sent %d bytes to port %d", nResult, nPort); |
||||
#endif |
||||
|
||||
return true; |
||||
} |
||||
|
||||
bool CAppleMIDIParticipant::SendAcceptInvitationPacket(CSocket* pSocket, CIPAddress* pIPAddress, u16 nPort) |
||||
{ |
||||
TAppleMIDISession AcceptPacket = |
||||
{ |
||||
htons(AppleMIDISignature), |
||||
htons(InvitationAccepted), |
||||
htonl(AppleMIDIVersion), |
||||
htonl(m_nInitiatorToken), |
||||
htonl(m_nSSRC), |
||||
{'\0'} |
||||
}; |
||||
|
||||
// TODO: configurable name
|
||||
strncpy(AcceptPacket.Name, "MiniDexed", sizeof(AcceptPacket.Name)); |
||||
|
||||
#ifdef APPLEMIDI_DEBUG |
||||
LOGNOTE("--> Accept invitation"); |
||||
#endif |
||||
|
||||
const size_t nSendSize = NamelessSessionPacketSize + strlen(AcceptPacket.Name) + 1; |
||||
return SendPacket(pSocket, pIPAddress, nPort, &AcceptPacket, nSendSize); |
||||
} |
||||
|
||||
bool CAppleMIDIParticipant::SendRejectInvitationPacket(CSocket* pSocket, CIPAddress* pIPAddress, u16 nPort, u32 nInitiatorToken) |
||||
{ |
||||
TAppleMIDISession RejectPacket = |
||||
{ |
||||
htons(AppleMIDISignature), |
||||
htons(InvitationRejected), |
||||
htonl(AppleMIDIVersion), |
||||
htonl(nInitiatorToken), |
||||
htonl(m_nSSRC), |
||||
{'\0'} |
||||
}; |
||||
|
||||
#ifdef APPLEMIDI_DEBUG |
||||
LOGNOTE("--> Reject invitation"); |
||||
#endif |
||||
|
||||
// Send without name
|
||||
return SendPacket(pSocket, pIPAddress, nPort, &RejectPacket, NamelessSessionPacketSize); |
||||
} |
||||
|
||||
bool CAppleMIDIParticipant::SendSyncPacket(u64 nTimestamp1, u64 nTimestamp2) |
||||
{ |
||||
const TAppleMIDISync SyncPacket = |
||||
{ |
||||
htons(AppleMIDISignature), |
||||
htons(Sync), |
||||
htonl(m_nSSRC), |
||||
1, |
||||
{0}, |
||||
{ |
||||
htonll(nTimestamp1), |
||||
htonll(nTimestamp2), |
||||
0 |
||||
} |
||||
}; |
||||
|
||||
#ifdef APPLEMIDI_DEBUG |
||||
LOGNOTE("--> Sync 1"); |
||||
#endif |
||||
|
||||
return SendPacket(m_pMIDISocket, &m_InitiatorIPAddress, m_nInitiatorMIDIPort, &SyncPacket, sizeof(SyncPacket)); |
||||
} |
||||
|
||||
bool CAppleMIDIParticipant::SendFeedbackPacket() |
||||
{ |
||||
const TAppleMIDIReceiverFeedback FeedbackPacket = |
||||
{ |
||||
htons(AppleMIDISignature), |
||||
htons(ReceiverFeedback), |
||||
htonl(m_nSSRC), |
||||
htonl(m_nSequence << 16) |
||||
}; |
||||
|
||||
#ifdef APPLEMIDI_DEBUG |
||||
LOGNOTE("--> Feedback"); |
||||
#endif |
||||
|
||||
return SendPacket(m_pControlSocket, &m_InitiatorIPAddress, m_nInitiatorControlPort, &FeedbackPacket, sizeof(FeedbackPacket)); |
||||
} |
||||
@ -0,0 +1,111 @@ |
||||
//
|
||||
// applemidi.h
|
||||
//
|
||||
// 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/>.
|
||||
//
|
||||
|
||||
#ifndef _applemidi_h |
||||
#define _applemidi_h |
||||
|
||||
#include <circle/bcmrandom.h> |
||||
#include <circle/net/ipaddress.h> |
||||
#include <circle/net/socket.h> |
||||
#include <circle/sched/task.h> |
||||
|
||||
class CAppleMIDIHandler |
||||
{ |
||||
public: |
||||
virtual void OnAppleMIDIDataReceived(const u8* pData, size_t nSize) = 0; |
||||
virtual void OnAppleMIDIConnect(const CIPAddress* pIPAddress, const char* pName) = 0; |
||||
virtual void OnAppleMIDIDisconnect(const CIPAddress* pIPAddress, const char* pName) = 0; |
||||
}; |
||||
|
||||
class CAppleMIDIParticipant : protected CTask |
||||
{ |
||||
public: |
||||
CAppleMIDIParticipant(CBcmRandomNumberGenerator* pRandom, CAppleMIDIHandler* pHandler); |
||||
virtual ~CAppleMIDIParticipant() override; |
||||
|
||||
bool Initialize(); |
||||
|
||||
virtual void Run() override; |
||||
|
||||
private: |
||||
void ControlInvitationState(); |
||||
void MIDIInvitationState(); |
||||
void ConnectedState(); |
||||
void Reset(); |
||||
|
||||
bool SendPacket(CSocket* pSocket, CIPAddress* pIPAddress, u16 nPort, const void* pData, size_t nSize); |
||||
bool SendAcceptInvitationPacket(CSocket* pSocket, CIPAddress* pIPAddress, u16 nPort); |
||||
bool SendRejectInvitationPacket(CSocket* pSocket, CIPAddress* pIPAddress, u16 nPort, u32 nInitiatorToken); |
||||
bool SendSyncPacket(u64 nTimestamp1, u64 nTimestamp2); |
||||
bool SendFeedbackPacket(); |
||||
|
||||
CBcmRandomNumberGenerator* m_pRandom; |
||||
|
||||
// UDP sockets
|
||||
CSocket* m_pControlSocket; |
||||
CSocket* m_pMIDISocket; |
||||
|
||||
// Foreign peers
|
||||
CIPAddress m_ForeignControlIPAddress; |
||||
CIPAddress m_ForeignMIDIIPAddress; |
||||
u16 m_nForeignControlPort; |
||||
u16 m_nForeignMIDIPort; |
||||
|
||||
// Connected peer
|
||||
CIPAddress m_InitiatorIPAddress; |
||||
u16 m_nInitiatorControlPort; |
||||
u16 m_nInitiatorMIDIPort; |
||||
|
||||
// Socket receive buffers
|
||||
u8 m_ControlBuffer[FRAME_BUFFER_SIZE]; |
||||
u8 m_MIDIBuffer[FRAME_BUFFER_SIZE]; |
||||
|
||||
int m_nControlResult; |
||||
int m_nMIDIResult; |
||||
|
||||
// Callback handler
|
||||
CAppleMIDIHandler* m_pHandler; |
||||
|
||||
// Participant state machine
|
||||
enum class TState |
||||
{ |
||||
ControlInvitation, |
||||
MIDIInvitation, |
||||
Connected |
||||
}; |
||||
|
||||
TState m_State; |
||||
|
||||
u32 m_nInitiatorToken = 0; |
||||
u32 m_nInitiatorSSRC = 0; |
||||
u32 m_nSSRC = 0; |
||||
u32 m_nLastMIDISequenceNumber = 0; |
||||
|
||||
u64 m_nOffsetEstimate = 0; |
||||
u64 m_nLastSyncTime = 0; |
||||
|
||||
u16 m_nSequence = 0; |
||||
u16 m_nLastFeedbackSequence = 0; |
||||
u64 m_nLastFeedbackTime = 0; |
||||
}; |
||||
|
||||
#endif |
||||
@ -0,0 +1,42 @@ |
||||
//
|
||||
// byteorder.h
|
||||
//
|
||||
// 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/>.
|
||||
//
|
||||
|
||||
#ifndef _byteorder_h |
||||
#define _byteorder_h |
||||
|
||||
#if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ |
||||
#define htons(VALUE) (VALUE) |
||||
#define htonl(VALUE) (VALUE) |
||||
#define htonll(VALUE) (VALUE) |
||||
#define ntohs(VALUE) (VALUE) |
||||
#define ntohl(VALUE) (VALUE) |
||||
#define ntohll(VALUE) (VALUE) |
||||
#else |
||||
#define htons(VALUE) __builtin_bswap16(VALUE) |
||||
#define htonl(VALUE) __builtin_bswap32(VALUE) |
||||
#define htonll(VALUE) __builtin_bswap64(VALUE) |
||||
#define ntohs(VALUE) __builtin_bswap16(VALUE) |
||||
#define ntohl(VALUE) __builtin_bswap32(VALUE) |
||||
#define ntohll(VALUE) __builtin_bswap64(VALUE) |
||||
#endif |
||||
|
||||
#endif |
||||
@ -0,0 +1,111 @@ |
||||
//
|
||||
// ftpdaemon.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/ipaddress.h> |
||||
#include <circle/net/netsubsystem.h> |
||||
#include <circle/string.h> |
||||
|
||||
#include "ftpdaemon.h" |
||||
#include "ftpworker.h" |
||||
|
||||
LOGMODULE("ftpd"); |
||||
|
||||
constexpr u16 ListenPort = 21; |
||||
constexpr u8 MaxConnections = 1; |
||||
|
||||
CFTPDaemon::CFTPDaemon(const char* pUser, const char* pPassword) |
||||
: CTask(TASK_STACK_SIZE, true), |
||||
m_pListenSocket(nullptr), |
||||
m_pUser(pUser), |
||||
m_pPassword(pPassword) |
||||
{ |
||||
} |
||||
|
||||
CFTPDaemon::~CFTPDaemon() |
||||
{ |
||||
if (m_pListenSocket) |
||||
delete m_pListenSocket; |
||||
} |
||||
|
||||
bool CFTPDaemon::Initialize() |
||||
{ |
||||
CNetSubSystem* const pNet = CNetSubSystem::Get(); |
||||
|
||||
if ((m_pListenSocket = new CSocket(pNet, IPPROTO_TCP)) == nullptr) |
||||
return false; |
||||
|
||||
if (m_pListenSocket->Bind(ListenPort) != 0) |
||||
{ |
||||
LOGERR("Couldn't bind to port %d", ListenPort); |
||||
return false; |
||||
} |
||||
|
||||
if (m_pListenSocket->Listen() != 0) |
||||
{ |
||||
LOGERR("Failed to listen on control socket"); |
||||
return false; |
||||
} |
||||
|
||||
// We started as a suspended task; run now that initialization is successful
|
||||
Start(); |
||||
|
||||
return true; |
||||
} |
||||
|
||||
void CFTPDaemon::Run() |
||||
{ |
||||
assert(m_pListenSocket != nullptr); |
||||
|
||||
LOGNOTE("Listener task spawned"); |
||||
|
||||
while (true) |
||||
{ |
||||
CIPAddress ClientIPAddress; |
||||
u16 nClientPort; |
||||
|
||||
LOGDBG("Listener: waiting for connection"); |
||||
CSocket* pConnection = m_pListenSocket->Accept(&ClientIPAddress, &nClientPort); |
||||
|
||||
if (pConnection == nullptr) |
||||
{ |
||||
LOGERR("Unable to accept connection"); |
||||
continue; |
||||
} |
||||
|
||||
CString IPAddressString; |
||||
ClientIPAddress.Format(&IPAddressString); |
||||
LOGNOTE("Incoming connection from %s:%d", static_cast<const char*>(IPAddressString), nClientPort); |
||||
|
||||
if (CFTPWorker::GetInstanceCount() >= MaxConnections) |
||||
{ |
||||
pConnection->Send("421 Maximum number of connections reached.\r\n", 45, 0); |
||||
delete pConnection; |
||||
LOGWARN("Maximum number of connections reached"); |
||||
continue; |
||||
} |
||||
|
||||
// Spawn new worker
|
||||
new CFTPWorker(pConnection, m_pUser, m_pPassword); |
||||
} |
||||
} |
||||
@ -0,0 +1,47 @@ |
||||
//
|
||||
// ftpdaemon.h
|
||||
//
|
||||
// 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/>.
|
||||
//
|
||||
|
||||
#ifndef _ftpdaemon_h |
||||
#define _ftpdaemon_h |
||||
|
||||
#include <circle/net/socket.h> |
||||
#include <circle/sched/task.h> |
||||
|
||||
class CFTPDaemon : protected CTask |
||||
{ |
||||
public: |
||||
CFTPDaemon(const char* pUser, const char* pPassword); |
||||
virtual ~CFTPDaemon() override; |
||||
|
||||
bool Initialize(); |
||||
|
||||
virtual void Run() override; |
||||
|
||||
private: |
||||
// TCP sockets
|
||||
CSocket* m_pListenSocket; |
||||
|
||||
const char* m_pUser; |
||||
const char* m_pPassword; |
||||
}; |
||||
|
||||
#endif |
||||
File diff suppressed because it is too large
Load Diff
@ -0,0 +1,157 @@ |
||||
//
|
||||
// ftpworker.h
|
||||
//
|
||||
// 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/>.
|
||||
//
|
||||
|
||||
#ifndef _ftpworker_h |
||||
#define _ftpworker_h |
||||
|
||||
#include <circle/net/ipaddress.h> |
||||
#include <circle/net/socket.h> |
||||
#include <circle/sched/task.h> |
||||
#include <circle/string.h> |
||||
|
||||
// TODO: These may be incomplete/inaccurate
|
||||
enum TFTPStatus |
||||
{ |
||||
FileStatusOk = 150, |
||||
|
||||
Success = 200, |
||||
SystemType = 215, |
||||
ReadyForNewUser = 220, |
||||
ClosingControl = 221, |
||||
TransferComplete = 226, |
||||
EnteringPassiveMode = 227, |
||||
UserLoggedIn = 230, |
||||
FileActionOk = 250, |
||||
PathCreated = 257, |
||||
|
||||
PasswordRequired = 331, |
||||
AccountRequired = 332, |
||||
PendingFurtherInfo = 350, |
||||
|
||||
ServiceNotAvailable = 421, |
||||
DataConnectionFailed = 425, |
||||
FileActionNotTaken = 450, |
||||
ActionAborted = 451, |
||||
|
||||
CommandUnrecognized = 500, |
||||
SyntaxError = 501, |
||||
CommandNotImplemented = 502, |
||||
BadCommandSequence = 503, |
||||
NotLoggedIn = 530, |
||||
FileNotFound = 550, |
||||
FileNameNotAllowed = 553, |
||||
}; |
||||
|
||||
enum class TTransferMode |
||||
{ |
||||
Active, |
||||
Passive, |
||||
}; |
||||
|
||||
enum class TDataType |
||||
{ |
||||
ASCII, |
||||
Binary, |
||||
}; |
||||
|
||||
struct TFTPCommand; |
||||
struct TDirectoryListEntry; |
||||
|
||||
class CFTPWorker : protected CTask |
||||
{ |
||||
public: |
||||
CFTPWorker(CSocket* pControlSocket, const char* pExpectedUser, const char* pExpectedPassword); |
||||
virtual ~CFTPWorker() override; |
||||
|
||||
virtual void Run() override; |
||||
|
||||
static u8 GetInstanceCount() { return s_nInstanceCount; } |
||||
|
||||
private: |
||||
CSocket* OpenDataConnection(); |
||||
|
||||
bool SendStatus(TFTPStatus StatusCode, const char* pMessage); |
||||
|
||||
bool CheckLoggedIn(); |
||||
|
||||
// Directory navigation
|
||||
CString RealPath(const char* pInBuffer) const; |
||||
const TDirectoryListEntry* BuildDirectoryList(size_t& nOutEntries) const; |
||||
|
||||
// FTP command handlers
|
||||
bool System(const char* pArgs); |
||||
bool Username(const char* pArgs); |
||||
bool Port(const char* pArgs); |
||||
bool Passive(const char* pArgs); |
||||
bool Password(const char* pArgs); |
||||
bool Type(const char* pArgs); |
||||
bool Retrieve(const char* pArgs); |
||||
bool Store(const char* pArgs); |
||||
bool Delete(const char* pArgs); |
||||
bool MakeDirectory(const char* pArgs); |
||||
bool ChangeWorkingDirectory(const char* pArgs); |
||||
bool ChangeToParentDirectory(const char* pArgs); |
||||
bool PrintWorkingDirectory(const char* pArgs); |
||||
bool List(const char* pArgs); |
||||
bool ListFileNames(const char* pArgs); |
||||
bool RenameFrom(const char* pArgs); |
||||
bool RenameTo(const char* pArgs); |
||||
bool Bye(const char* pArgs); |
||||
bool NoOp(const char* pArgs); |
||||
|
||||
CString m_LogName; |
||||
|
||||
// Authentication
|
||||
const char* m_pExpectedUser; |
||||
const char* m_pExpectedPassword; |
||||
|
||||
// TCP sockets
|
||||
CSocket* m_pControlSocket; |
||||
CSocket* m_pDataSocket; |
||||
u16 m_nDataSocketPort; |
||||
CIPAddress m_DataSocketIPAddress; |
||||
|
||||
// Command/data buffers
|
||||
char m_CommandBuffer[FRAME_BUFFER_SIZE]; |
||||
u8 m_DataBuffer[FRAME_BUFFER_SIZE]; |
||||
|
||||
// Session state
|
||||
CString m_User; |
||||
CString m_Password; |
||||
TDataType m_DataType; |
||||
TTransferMode m_TransferMode; |
||||
CString m_CurrentPath; |
||||
CString m_RenameFrom; |
||||
|
||||
static void FatFsPathToFTPPath(const char* pInBuffer, char* pOutBuffer, size_t nSize); |
||||
static void FTPPathToFatFsPath(const char* pInBuffer, char* pOutBuffer, size_t nSize); |
||||
|
||||
static void FatFsParentPath(const char* pInBuffer, char* pOutBuffer, size_t nSize); |
||||
|
||||
static void FormatLastModifiedDate(u16 nDate, char* pOutBuffer, size_t nSize); |
||||
static void FormatLastModifiedTime(u16 nDate, char* pOutBuffer, size_t nSize); |
||||
|
||||
static const TFTPCommand Commands[]; |
||||
static u8 s_nInstanceCount; |
||||
}; |
||||
|
||||
#endif |
||||
@ -0,0 +1,345 @@ |
||||
//
|
||||
// mdnspublisher.cpp
|
||||
//
|
||||
// Circle - A C++ bare metal environment for Raspberry Pi
|
||||
// Copyright (C) 2024 R. Stange <rsta2@o2online.de>
|
||||
//
|
||||
// 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 3 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, see <http://www.gnu.org/licenses/>.
|
||||
//
|
||||
#include "mdnspublisher.h" |
||||
#include <circle/sched/scheduler.h> |
||||
#include <circle/net/in.h> |
||||
#include <circle/logger.h> |
||||
#include <circle/util.h> |
||||
#include <assert.h> |
||||
#define MDNS_HOST_GROUP {224, 0, 0, 251} |
||||
#define MDNS_PORT 5353 |
||||
#define MDNS_DOMAIN "local" |
||||
#define RR_TYPE_A 1 |
||||
#define RR_TYPE_PTR 12 |
||||
#define RR_TYPE_TXT 16 |
||||
#define RR_TYPE_SRV 33 |
||||
#define RR_CLASS_IN 1 |
||||
#define RR_CACHE_FLUSH 0x8000 |
||||
LOGMODULE ("mdnspub"); |
||||
CmDNSPublisher::CmDNSPublisher (CNetSubSystem *pNet) |
||||
: m_pNet (pNet), |
||||
m_pSocket (nullptr), |
||||
m_bRunning (FALSE), |
||||
m_pWritePtr (nullptr), |
||||
m_pDataLen (nullptr) |
||||
{ |
||||
SetName ("mdnspub"); |
||||
} |
||||
CmDNSPublisher::~CmDNSPublisher (void) |
||||
{ |
||||
assert (!m_pSocket); |
||||
m_bRunning = FALSE; |
||||
} |
||||
boolean CmDNSPublisher::PublishService (const char *pServiceName, const char *pServiceType, |
||||
u16 usServicePort, const char *ppText[]) |
||||
{ |
||||
if (!m_bRunning) |
||||
{ |
||||
// Let task can run once to initialize
|
||||
CScheduler::Get ()->Yield (); |
||||
if (!m_bRunning) |
||||
{ |
||||
return FALSE; |
||||
} |
||||
} |
||||
assert (pServiceName); |
||||
assert (pServiceType); |
||||
TService *pService = new TService {pServiceName, pServiceType, usServicePort, 0}; |
||||
assert (pService); |
||||
if (ppText) |
||||
{ |
||||
for (unsigned i = 0; i < MaxTextRecords && ppText[i]; i++) |
||||
{ |
||||
pService->ppText[i] = new CString (ppText[i]); |
||||
assert (pService->ppText[i]); |
||||
pService->nTextRecords++; |
||||
} |
||||
} |
||||
m_Mutex.Acquire (); |
||||
// Insert as first element into list
|
||||
TPtrListElement *pElement = m_ServiceList.GetFirst (); |
||||
if (pElement) |
||||
{ |
||||
m_ServiceList.InsertBefore (pElement, pService); |
||||
} |
||||
else |
||||
{ |
||||
m_ServiceList.InsertAfter (nullptr, pService); |
||||
} |
||||
m_Mutex.Release (); |
||||
LOGDBG ("Publish service %s", (const char *) pService->ServiceName); |
||||
m_Event.Set (); // Trigger resent for everything
|
||||
return TRUE; |
||||
} |
||||
boolean CmDNSPublisher::UnpublishService (const char *pServiceName) |
||||
{ |
||||
if (!m_bRunning) |
||||
{ |
||||
return FALSE; |
||||
} |
||||
assert (pServiceName); |
||||
m_Mutex.Acquire (); |
||||
// Find service in the list and remove it
|
||||
TService *pService = nullptr; |
||||
TPtrListElement *pElement = m_ServiceList.GetFirst (); |
||||
while (pElement) |
||||
{ |
||||
pService = static_cast<TService *> (CPtrList::GetPtr (pElement)); |
||||
assert (pService); |
||||
if (pService->ServiceName.Compare (pServiceName) == 0) |
||||
{ |
||||
m_ServiceList.Remove (pElement); |
||||
break; |
||||
} |
||||
pService = nullptr; |
||||
pElement = m_ServiceList.GetNext (pElement); |
||||
} |
||||
m_Mutex.Release (); |
||||
if (!pService) |
||||
{ |
||||
return FALSE; |
||||
} |
||||
LOGDBG ("Unpublish service %s", (const char *) pService->ServiceName); |
||||
if (!SendResponse (pService, TRUE)) |
||||
{ |
||||
LOGWARN ("Send failed"); |
||||
} |
||||
for (unsigned i = 0; i < pService->nTextRecords; i++) |
||||
{ |
||||
delete pService->ppText[i]; |
||||
} |
||||
delete pService; |
||||
return TRUE; |
||||
} |
||||
void CmDNSPublisher::Run (void) |
||||
{ |
||||
assert (m_pNet); |
||||
assert (!m_pSocket); |
||||
m_pSocket = new CSocket (m_pNet, IPPROTO_UDP); |
||||
assert (m_pSocket); |
||||
if (m_pSocket->Bind (MDNS_PORT) < 0) |
||||
{ |
||||
LOGERR ("Cannot bind to port %u", MDNS_PORT); |
||||
delete m_pSocket; |
||||
m_pSocket = nullptr; |
||||
while (1) |
||||
{ |
||||
m_Event.Clear (); |
||||
m_Event.Wait (); |
||||
} |
||||
} |
||||
static const u8 mDNSIPAddress[] = MDNS_HOST_GROUP; |
||||
CIPAddress mDNSIP (mDNSIPAddress); |
||||
if (m_pSocket->Connect (mDNSIP, MDNS_PORT) < 0) |
||||
{ |
||||
LOGERR ("Cannot connect to mDNS host group"); |
||||
delete m_pSocket; |
||||
m_pSocket = nullptr; |
||||
while (1) |
||||
{ |
||||
m_Event.Clear (); |
||||
m_Event.Wait (); |
||||
} |
||||
} |
||||
m_bRunning = TRUE; |
||||
while (1) |
||||
{ |
||||
m_Event.Clear (); |
||||
m_Event.WaitWithTimeout ((TTLShort - 10) * 1000000); |
||||
for (unsigned i = 1; i <= 3; i++) |
||||
{ |
||||
m_Mutex.Acquire (); |
||||
TPtrListElement *pElement = m_ServiceList.GetFirst (); |
||||
while (pElement) |
||||
{ |
||||
TService *pService = |
||||
static_cast<TService *> (CPtrList::GetPtr (pElement)); |
||||
assert (pService); |
||||
if (!SendResponse (pService, FALSE)) |
||||
{ |
||||
LOGWARN ("Send failed"); |
||||
} |
||||
pElement = m_ServiceList.GetNext (pElement); |
||||
} |
||||
m_Mutex.Release (); |
||||
CScheduler::Get ()->Sleep (1); |
||||
} |
||||
} |
||||
} |
||||
boolean CmDNSPublisher::SendResponse (TService *pService, boolean bDelete) |
||||
{ |
||||
assert (pService); |
||||
assert (m_pNet); |
||||
// Collect data
|
||||
static const char Domain[] = "." MDNS_DOMAIN; |
||||
CString ServiceType (pService->ServiceType); |
||||
ServiceType.Append (Domain); |
||||
CString ServiceName (pService->ServiceName); |
||||
ServiceName.Append ("."); |
||||
ServiceName.Append (ServiceType); |
||||
CString Hostname (m_pNet->GetHostname ()); |
||||
Hostname.Append (Domain); |
||||
// Start writing buffer
|
||||
assert (!m_pWritePtr); |
||||
m_pWritePtr = m_Buffer; |
||||
// mDNS Header
|
||||
PutWord (0); // Transaction ID
|
||||
PutWord (0x8400); // Message is a response, Server is an authority for the domain
|
||||
PutWord (0); // Questions
|
||||
PutWord (5); // Answer RRs
|
||||
PutWord (0); // Authority RRs
|
||||
PutWord (0); // Additional RRs
|
||||
// Answer RRs
|
||||
// PTR
|
||||
PutDNSName ("_services._dns-sd._udp.local"); |
||||
PutWord (RR_TYPE_PTR); |
||||
PutWord (RR_CLASS_IN); |
||||
PutDWord (bDelete ? TTLDelete : TTLLong); |
||||
ReserveDataLength (); |
||||
u8 *pServiceTypePtr = m_pWritePtr; |
||||
PutDNSName (ServiceType); |
||||
SetDataLength (); |
||||
// PTR
|
||||
PutCompressedString (pServiceTypePtr); |
||||
PutWord (RR_TYPE_PTR); |
||||
PutWord (RR_CLASS_IN); |
||||
PutDWord (bDelete ? TTLDelete : TTLLong); |
||||
ReserveDataLength (); |
||||
u8 *pServiceNamePtr = m_pWritePtr; |
||||
PutDNSName (ServiceName); |
||||
SetDataLength (); |
||||
// SRV
|
||||
PutCompressedString (pServiceNamePtr); |
||||
PutWord (RR_TYPE_SRV); |
||||
PutWord (RR_CLASS_IN | RR_CACHE_FLUSH); |
||||
PutDWord (bDelete ? TTLDelete : TTLShort); |
||||
ReserveDataLength (); |
||||
PutWord (0); // Priority
|
||||
PutWord (0); // Weight
|
||||
PutWord (pService->usServicePort); |
||||
u8 *pHostnamePtr = m_pWritePtr; |
||||
PutDNSName (Hostname); |
||||
SetDataLength (); |
||||
// A
|
||||
PutCompressedString (pHostnamePtr); |
||||
PutWord (RR_TYPE_A); |
||||
PutWord (RR_CLASS_IN | RR_CACHE_FLUSH); |
||||
PutDWord (TTLShort); |
||||
ReserveDataLength (); |
||||
PutIPAddress (*m_pNet->GetConfig ()->GetIPAddress ()); |
||||
SetDataLength (); |
||||
// TXT
|
||||
PutCompressedString (pServiceNamePtr); |
||||
PutWord (RR_TYPE_TXT); |
||||
PutWord (RR_CLASS_IN | RR_CACHE_FLUSH); |
||||
PutDWord (bDelete ? TTLDelete : TTLLong); |
||||
ReserveDataLength (); |
||||
for (int i = pService->nTextRecords-1; i >= 0; i--) // In reverse order
|
||||
{ |
||||
assert (pService->ppText[i]); |
||||
PutString (*pService->ppText[i]); |
||||
} |
||||
SetDataLength (); |
||||
unsigned nMsgSize = m_pWritePtr - m_Buffer; |
||||
m_pWritePtr = nullptr; |
||||
if (nMsgSize >= MaxMessageSize) |
||||
{ |
||||
return FALSE; |
||||
} |
||||
assert (m_pSocket); |
||||
return m_pSocket->Send (m_Buffer, nMsgSize, MSG_DONTWAIT) == (int) nMsgSize; |
||||
} |
||||
void CmDNSPublisher::PutByte (u8 uchValue) |
||||
{ |
||||
assert (m_pWritePtr); |
||||
if ((unsigned) (m_pWritePtr - m_Buffer) < MaxMessageSize) |
||||
{ |
||||
*m_pWritePtr++ = uchValue; |
||||
} |
||||
} |
||||
void CmDNSPublisher::PutWord (u16 usValue) |
||||
{ |
||||
PutByte (usValue >> 8); |
||||
PutByte (usValue & 0xFF); |
||||
} |
||||
void CmDNSPublisher::PutDWord (u32 nValue) |
||||
{ |
||||
PutWord (nValue >> 16); |
||||
PutWord (nValue & 0xFFFF); |
||||
} |
||||
void CmDNSPublisher::PutString (const char *pValue) |
||||
{ |
||||
assert (pValue); |
||||
size_t nLen = strlen (pValue); |
||||
assert (nLen <= 255); |
||||
PutByte (nLen); |
||||
while (*pValue) |
||||
{ |
||||
PutByte (static_cast<u8> (*pValue++)); |
||||
} |
||||
} |
||||
void CmDNSPublisher::PutCompressedString (const u8 *pWritePtr) |
||||
{ |
||||
assert (m_pWritePtr); |
||||
assert (pWritePtr < m_pWritePtr); |
||||
unsigned nOffset = pWritePtr - m_Buffer; |
||||
assert (nOffset < MaxMessageSize); |
||||
nOffset |= 0xC000; |
||||
PutWord (static_cast<u16> (nOffset)); |
||||
} |
||||
void CmDNSPublisher::PutDNSName (const char *pValue) |
||||
{ |
||||
char Buffer[256]; |
||||
assert (pValue); |
||||
strncpy (Buffer, pValue, sizeof Buffer); |
||||
Buffer[sizeof Buffer-1] = '\0'; |
||||
char *pSavePtr = nullptr; |
||||
char *pToken = strtok_r (Buffer, ".", &pSavePtr); |
||||
while (pToken) |
||||
{ |
||||
PutString (pToken); |
||||
pToken = strtok_r (nullptr, ".", &pSavePtr); |
||||
} |
||||
PutByte (0); |
||||
} |
||||
void CmDNSPublisher::PutIPAddress (const CIPAddress &rValue) |
||||
{ |
||||
u8 Buffer[IP_ADDRESS_SIZE]; |
||||
rValue.CopyTo (Buffer); |
||||
for (unsigned i = 0; i < IP_ADDRESS_SIZE; i++) |
||||
{ |
||||
PutByte (Buffer[i]); |
||||
} |
||||
} |
||||
void CmDNSPublisher::ReserveDataLength (void) |
||||
{ |
||||
assert (!m_pDataLen); |
||||
m_pDataLen = m_pWritePtr; |
||||
assert (m_pDataLen); |
||||
PutWord (0); |
||||
} |
||||
void CmDNSPublisher::SetDataLength (void) |
||||
{ |
||||
assert (m_pDataLen); |
||||
assert (m_pWritePtr); |
||||
assert (m_pWritePtr > m_pDataLen); |
||||
*reinterpret_cast<u16 *> (m_pDataLen) = le2be16 (m_pWritePtr - m_pDataLen - sizeof (u16)); |
||||
m_pDataLen = nullptr; |
||||
} |
||||
@ -0,0 +1,90 @@ |
||||
//
|
||||
// mdnspublisher.h
|
||||
//
|
||||
// Circle - A C++ bare metal environment for Raspberry Pi
|
||||
// Copyright (C) 2024 R. Stange <rsta2@o2online.de>
|
||||
//
|
||||
// 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 3 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, see <http://www.gnu.org/licenses/>.
|
||||
//
|
||||
#ifndef _circle_net_mdnspublisher_h |
||||
#define _circle_net_mdnspublisher_h |
||||
#include <circle/sched/task.h> |
||||
#include <circle/sched/mutex.h> |
||||
#include <circle/sched/synchronizationevent.h> |
||||
#include <circle/net/netsubsystem.h> |
||||
#include <circle/net/socket.h> |
||||
#include <circle/net/ipaddress.h> |
||||
#include <circle/ptrlist.h> |
||||
#include <circle/string.h> |
||||
#include <circle/types.h> |
||||
class CmDNSPublisher : public CTask /// mDNS / Bonjour client task
|
||||
{ |
||||
public: |
||||
static constexpr const char *ServiceTypeAppleMIDI = "_apple-midi._udp"; |
||||
public: |
||||
/// \param pNet Pointer to the network subsystem object
|
||||
CmDNSPublisher (CNetSubSystem *pNet); |
||||
~CmDNSPublisher (void); |
||||
/// \brief Start publishing a service
|
||||
/// \param pServiceName Name of the service to be published
|
||||
/// \param pServiceType Type of the service to be published (e.g. ServiceTypeAppleMIDI)
|
||||
/// \param usServicePort Port number of the service to be published (in host byte order)
|
||||
/// \param ppText Descriptions of the service (terminated with a nullptr, or nullptr itself)
|
||||
/// \return Operation successful?
|
||||
boolean PublishService (const char *pServiceName, |
||||
const char *pServiceType, |
||||
u16 usServicePort, |
||||
const char *ppText[] = nullptr); |
||||
/// \brief Stop publishing a service
|
||||
/// \param pServiceName Name of the service to be unpublished (same as when published)
|
||||
/// \return Operation successful?
|
||||
boolean UnpublishService (const char *pServiceName); |
||||
void Run (void) override; |
||||
private: |
||||
static const unsigned MaxTextRecords = 10; |
||||
static const unsigned MaxMessageSize = 1400; // safe UDP payload in an Ethernet frame
|
||||
static const unsigned TTLShort = 15; // seconds
|
||||
static const unsigned TTLLong = 4500; |
||||
static const unsigned TTLDelete = 0; |
||||
struct TService |
||||
{ |
||||
CString ServiceName; |
||||
CString ServiceType; |
||||
u16 usServicePort; |
||||
unsigned nTextRecords; |
||||
CString *ppText[MaxTextRecords]; |
||||
}; |
||||
boolean SendResponse (TService *pService, boolean bDelete); |
||||
// Helpers for writing to buffer
|
||||
void PutByte (u8 uchValue); |
||||
void PutWord (u16 usValue); |
||||
void PutDWord (u32 nValue); |
||||
void PutString (const char *pValue); |
||||
void PutCompressedString (const u8 *pWritePtr); |
||||
void PutDNSName (const char *pValue); |
||||
void PutIPAddress (const CIPAddress &rValue); |
||||
void ReserveDataLength (void); |
||||
void SetDataLength (void); |
||||
private: |
||||
CNetSubSystem *m_pNet; |
||||
CPtrList m_ServiceList; |
||||
CMutex m_Mutex; |
||||
CSocket *m_pSocket; |
||||
boolean m_bRunning; |
||||
CSynchronizationEvent m_Event; |
||||
u8 m_Buffer[MaxMessageSize]; |
||||
u8 *m_pWritePtr; |
||||
u8 *m_pDataLen; |
||||
}; |
||||
#endif |
||||
@ -0,0 +1,89 @@ |
||||
//
|
||||
// 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(); |
||||
} |
||||
} |
||||
@ -0,0 +1,57 @@ |
||||
//
|
||||
// udpmidi.h
|
||||
//
|
||||
// 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/>.
|
||||
//
|
||||
|
||||
#ifndef _udpmidi_h |
||||
#define _udpmidi_h |
||||
|
||||
#include <circle/net/ipaddress.h> |
||||
#include <circle/net/socket.h> |
||||
#include <circle/sched/task.h> |
||||
|
||||
class CUDPMIDIHandler |
||||
{ |
||||
public: |
||||
virtual void OnUDPMIDIDataReceived(const u8* pData, size_t nSize) = 0; |
||||
}; |
||||
|
||||
class CUDPMIDIReceiver : protected CTask |
||||
{ |
||||
public: |
||||
CUDPMIDIReceiver(CUDPMIDIHandler* pHandler); |
||||
virtual ~CUDPMIDIReceiver() override; |
||||
|
||||
bool Initialize(); |
||||
|
||||
virtual void Run() override; |
||||
|
||||
private: |
||||
// UDP sockets
|
||||
CSocket* m_pMIDISocket; |
||||
|
||||
// Socket receive buffer
|
||||
u8 m_MIDIBuffer[FRAME_BUFFER_SIZE]; |
||||
|
||||
// Callback handler
|
||||
CUDPMIDIHandler* m_pHandler; |
||||
}; |
||||
|
||||
#endif |
||||
@ -0,0 +1,193 @@ |
||||
|
||||
//
|
||||
// utility.h
|
||||
//
|
||||
// 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/>.
|
||||
//
|
||||
|
||||
#ifndef _utility_h |
||||
#define _utility_h |
||||
|
||||
#include <circle/string.h> |
||||
#include <circle/util.h> |
||||
|
||||
// Macro to extract the string representation of an enum
|
||||
#define CONFIG_ENUM_VALUE(VALUE, STRING) VALUE, |
||||
|
||||
// Macro to extract the enum value
|
||||
#define CONFIG_ENUM_STRING(VALUE, STRING) #STRING, |
||||
|
||||
// Macro to declare the enum itself
|
||||
#define CONFIG_ENUM(NAME, VALUES) enum class NAME { VALUES(CONFIG_ENUM_VALUE) } |
||||
|
||||
// Macro to declare an array of string representations for an enum
|
||||
#define CONFIG_ENUM_STRINGS(NAME, DATA) static const char* NAME##Strings[] = { DATA(CONFIG_ENUM_STRING) } |
||||
|
||||
namespace Utility |
||||
{ |
||||
// Templated function for clamping a value between a minimum and a maximum
|
||||
template <class T> |
||||
constexpr T Clamp(const T& nValue, const T& nMin, const T& nMax) |
||||
{ |
||||
return (nValue < nMin) ? nMin : (nValue > nMax) ? nMax : nValue; |
||||
} |
||||
|
||||
// Templated function for taking the minimum of two values
|
||||
template <class T> |
||||
constexpr T Min(const T& nLHS, const T& nRHS) |
||||
{ |
||||
return nLHS < nRHS ? nLHS : nRHS; |
||||
} |
||||
|
||||
// Templated function for taking the maximum of two values
|
||||
template <class T> |
||||
constexpr T Max(const T& nLHS, const T& nRHS) |
||||
{ |
||||
return nLHS > nRHS ? nLHS : nRHS; |
||||
} |
||||
|
||||
// Function for performing a linear interpolation of a value
|
||||
constexpr float Lerp(float nValue, float nMinA, float nMaxA, float nMinB, float nMaxB) |
||||
{ |
||||
return nMinB + (nValue - nMinA) * ((nMaxB - nMinB) / (nMaxA - nMinA)); |
||||
} |
||||
|
||||
// Return number of elements in an array
|
||||
template <class T, size_t N> |
||||
constexpr size_t ArraySize(const T(&)[N]) { return N; } |
||||
|
||||
// Returns whether some value is a power of 2
|
||||
template <class T> |
||||
constexpr bool IsPowerOfTwo(const T& nValue) |
||||
{ |
||||
return nValue && ((nValue & (nValue - 1)) == 0); |
||||
} |
||||
|
||||
// Rounds a number to a nearest multiple; only works for integer values/multiples
|
||||
template <class T> |
||||
constexpr T RoundToNearestMultiple(const T& nValue, const T& nMultiple) |
||||
{ |
||||
return ((nValue + nMultiple / 2) / nMultiple) * nMultiple; |
||||
} |
||||
|
||||
// Convert between milliseconds and ticks of a 1MHz clock
|
||||
template <class T> |
||||
constexpr T MillisToTicks(const T& nMillis) |
||||
{ |
||||
return nMillis * 1000; |
||||
} |
||||
|
||||
template <class T> |
||||
constexpr T TicksToMillis(const T& nTicks) |
||||
{ |
||||
return nTicks / 1000; |
||||
} |
||||
|
||||
// Computes the Roland checksum
|
||||
constexpr u8 RolandChecksum(const u8* pData, size_t nSize) |
||||
{ |
||||
u8 nSum = 0; |
||||
for (size_t i = 0; i < nSize; ++i) |
||||
nSum = (nSum + pData[i]) & 0x7F; |
||||
|
||||
return 128 - nSum; |
||||
} |
||||
|
||||
// Comparators for sorting
|
||||
namespace Comparator |
||||
{ |
||||
template<class T> |
||||
using TComparator = bool (*)(const T&, const T&); |
||||
|
||||
template<class T> |
||||
inline bool LessThan(const T& ObjectA, const T& ObjectB) |
||||
{ |
||||
return ObjectA < ObjectB; |
||||
} |
||||
|
||||
template<class T> |
||||
inline bool GreaterThan(const T& ObjectA, const T& ObjectB) |
||||
{ |
||||
return ObjectA > ObjectB; |
||||
} |
||||
|
||||
inline bool CaseInsensitiveAscending(const CString& StringA, const CString& StringB) |
||||
{ |
||||
return strcasecmp(StringA, StringB) < 0; |
||||
} |
||||
} |
||||
|
||||
// Swaps two objects in-place
|
||||
template<class T> |
||||
inline void Swap(T& ObjectA, T& ObjectB) |
||||
{ |
||||
u8 Buffer[sizeof(T)]; |
||||
memcpy(Buffer, &ObjectA, sizeof(T)); |
||||
memcpy(&ObjectA, &ObjectB, sizeof(T)); |
||||
memcpy(&ObjectB, Buffer, sizeof(T)); |
||||
} |
||||
|
||||
namespace |
||||
{ |
||||
// Quicksort partition function (private)
|
||||
template<class T> |
||||
size_t Partition(T* Items, Comparator::TComparator<T> Comparator, size_t nLow, size_t nHigh) |
||||
{ |
||||
const size_t nPivotIndex = (nHigh + nLow) / 2; |
||||
T* Pivot = &Items[nPivotIndex]; |
||||
|
||||
while (true) |
||||
{ |
||||
while (Comparator(Items[nLow], *Pivot)) |
||||
++nLow; |
||||
|
||||
while (Comparator(*Pivot, Items[nHigh])) |
||||
--nHigh; |
||||
|
||||
if (nLow >= nHigh) |
||||
return nHigh; |
||||
|
||||
Swap(Items[nLow], Items[nHigh]); |
||||
|
||||
// Update pointer if pivot was swapped
|
||||
if (nPivotIndex == nLow) |
||||
Pivot = &Items[nHigh]; |
||||
else if (nPivotIndex == nHigh) |
||||
Pivot = &Items[nLow]; |
||||
|
||||
++nLow; |
||||
--nHigh; |
||||
} |
||||
} |
||||
} |
||||
|
||||
// Sorts an array in-place using the Tony Hoare Quicksort algorithm
|
||||
template <class T> |
||||
void QSort(T* Items, Comparator::TComparator<T> Comparator, size_t nLow, size_t nHigh) |
||||
{ |
||||
if (nLow < nHigh) |
||||
{ |
||||
size_t p = Partition(Items, Comparator, nLow, nHigh); |
||||
QSort(Items, Comparator, nLow, p); |
||||
QSort(Items, Comparator, p + 1, nHigh); |
||||
} |
||||
} |
||||
} |
||||
|
||||
#endif |
||||
@ -0,0 +1,90 @@ |
||||
//
|
||||
// udpmididevice.cpp
|
||||
//
|
||||
// MiniDexed - Dexed FM synthesizer for bare metal Raspberry Pi
|
||||
// Copyright (C) 2022 The MiniDexed Team
|
||||
//
|
||||
// Original author of this class:
|
||||
// R. Stange <rsta2@o2online.de>
|
||||
//
|
||||
// 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 3 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, see <http://www.gnu.org/licenses/>.
|
||||
//
|
||||
|
||||
#include <circle/logger.h> |
||||
#include <cstring> |
||||
#include "udpmididevice.h" |
||||
#include <assert.h> |
||||
|
||||
#define VIRTUALCABLE 24 |
||||
|
||||
LOGMODULE("udpmididevice"); |
||||
|
||||
CUDPMIDIDevice::CUDPMIDIDevice (CMiniDexed *pSynthesizer, |
||||
CConfig *pConfig, CUserInterface *pUI) |
||||
: CMIDIDevice (pSynthesizer, pConfig, pUI), |
||||
m_pSynthesizer (pSynthesizer), |
||||
m_pConfig (pConfig) |
||||
{ |
||||
AddDevice ("udp"); |
||||
} |
||||
|
||||
CUDPMIDIDevice::~CUDPMIDIDevice (void) |
||||
{ |
||||
//m_pSynthesizer = 0;
|
||||
} |
||||
|
||||
boolean CUDPMIDIDevice::Initialize (void) |
||||
{ |
||||
m_pAppleMIDIParticipant = new CAppleMIDIParticipant(&m_Random, this); |
||||
if (!m_pAppleMIDIParticipant->Initialize()) |
||||
{ |
||||
LOGERR("Failed to init RTP listener"); |
||||
delete m_pAppleMIDIParticipant; |
||||
m_pAppleMIDIParticipant = nullptr; |
||||
} |
||||
else |
||||
LOGNOTE("RTP Listener initialized"); |
||||
m_pUDPMIDIReceiver = new CUDPMIDIReceiver(this); |
||||
if (!m_pUDPMIDIReceiver->Initialize()) |
||||
{ |
||||
LOGERR("Failed to init UDP MIDI receiver"); |
||||
delete m_pUDPMIDIReceiver; |
||||
m_pUDPMIDIReceiver = nullptr; |
||||
} |
||||
else |
||||
LOGNOTE("UDP MIDI receiver initialized"); |
||||
return true; |
||||
} |
||||
|
||||
// Methods to handle MIDI events
|
||||
|
||||
void CUDPMIDIDevice::OnAppleMIDIDataReceived(const u8* pData, size_t nSize) |
||||
{ |
||||
MIDIMessageHandler(pData, nSize, VIRTUALCABLE); |
||||
} |
||||
|
||||
void CUDPMIDIDevice::OnAppleMIDIConnect(const CIPAddress* pIPAddress, const char* pName) |
||||
{ |
||||
LOGNOTE("RTP Device connected"); |
||||
} |
||||
|
||||
void CUDPMIDIDevice::OnAppleMIDIDisconnect(const CIPAddress* pIPAddress, const char* pName) |
||||
{ |
||||
LOGNOTE("RTP Device disconnected"); |
||||
} |
||||
|
||||
void CUDPMIDIDevice::OnUDPMIDIDataReceived(const u8* pData, size_t nSize) |
||||
{ |
||||
MIDIMessageHandler(pData, nSize, VIRTUALCABLE); |
||||
} |
||||
@ -0,0 +1,55 @@ |
||||
//
|
||||
// udpmididevice.h
|
||||
//
|
||||
// Virtual midi device for data recieved on network
|
||||
//
|
||||
// MiniDexed - Dexed FM synthesizer for bare metal Raspberry Pi
|
||||
// Copyright (C) 2022 The MiniDexed Team
|
||||
//
|
||||
// Original author of this class:
|
||||
// R. Stange <rsta2@o2online.de>
|
||||
//
|
||||
// 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 3 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, see <http://www.gnu.org/licenses/>.
|
||||
//
|
||||
#ifndef _udpmididevice_h |
||||
#define _udpmididevice_h |
||||
|
||||
#include "mididevice.h" |
||||
#include "config.h" |
||||
#include "net/applemidi.h" |
||||
#include "net/udpmidi.h" |
||||
|
||||
class CMiniDexed; |
||||
|
||||
class CUDPMIDIDevice : CAppleMIDIHandler, CUDPMIDIHandler, public CMIDIDevice |
||||
{ |
||||
public: |
||||
CUDPMIDIDevice (CMiniDexed *pSynthesizer, CConfig *pConfig, CUserInterface *pUI); |
||||
~CUDPMIDIDevice (void); |
||||
|
||||
boolean Initialize (void); |
||||
virtual void OnAppleMIDIDataReceived(const u8* pData, size_t nSize) override; |
||||
virtual void OnAppleMIDIConnect(const CIPAddress* pIPAddress, const char* pName) override; |
||||
virtual void OnAppleMIDIDisconnect(const CIPAddress* pIPAddress, const char* pName) override; |
||||
virtual void OnUDPMIDIDataReceived(const u8* pData, size_t nSize) override; |
||||
|
||||
private: |
||||
CMiniDexed *m_pSynthesizer; |
||||
CConfig *m_pConfig; |
||||
CBcmRandomNumberGenerator m_Random; |
||||
CAppleMIDIParticipant* m_pAppleMIDIParticipant; // AppleMIDI participant instance
|
||||
CUDPMIDIReceiver* m_pUDPMIDIReceiver; |
||||
}; |
||||
|
||||
#endif |
||||
@ -1,24 +1,27 @@ |
||||
#!/bin/bash |
||||
set -ex |
||||
# |
||||
|
||||
# Update top-level modules as a baseline |
||||
git submodule update --init --recursive |
||||
# |
||||
|
||||
# Use fixed master branch of circle-stdlib then re-update |
||||
cd circle-stdlib/ |
||||
git checkout 3bd135d |
||||
git reset --hard |
||||
git checkout 1111eee # Matches Circle Step49 |
||||
git submodule update --init --recursive |
||||
cd - |
||||
# |
||||
|
||||
# Optional update submodules explicitly |
||||
cd circle-stdlib/libs/circle |
||||
git checkout tags/Step49 |
||||
cd - |
||||
cd circle-stdlib/libs/circle-newlib |
||||
#cd circle-stdlib/libs/circle |
||||
#git reset --hard |
||||
#git checkout tags/Step49 |
||||
#cd - |
||||
#cd circle-stdlib/libs/circle-newlib |
||||
#git checkout develop |
||||
cd - |
||||
# |
||||
#cd - |
||||
|
||||
# Use fixed master branch of Synth_Dexed |
||||
cd Synth_Dexed/ |
||||
git reset --hard |
||||
git checkout c9f5274 |
||||
cd - |
||||
|
||||
Loading…
Reference in new issue