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64 lines
1.6 KiB
C++
64 lines
1.6 KiB
C++
//
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// midiparser.h
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//
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// mt32-pi - A baremetal MIDI synthesizer for Raspberry Pi
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// Copyright (C) 2020-2022 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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#ifndef _midiparser_h
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#define _midiparser_h
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#include <circle/types.h>
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class CMIDIParser
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{
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public:
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CMIDIParser();
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void ParseMIDIBytes(const u8* pData, size_t nSize, bool bIgnoreNoteOns = false);
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protected:
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virtual void OnShortMessage(u32 nMessage) = 0;
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virtual void OnSysExMessage(const u8* pData, size_t nSize) = 0;
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virtual void OnUnexpectedStatus();
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virtual void OnSysExOverflow();
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private:
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enum class TState
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{
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StatusByte,
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DataByte,
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SysExByte
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};
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// Matches mt32emu's SysEx buffer size
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static constexpr size_t SysExBufferSize = 1000;
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void ParseStatusByte(u8 nByte);
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bool CheckCompleteShortMessage(bool bIgnoreNoteOns = false);
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u32 PrepareShortMessage() const;
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void ResetState(bool bClearStatusByte);
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TState m_State;
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u8 m_MessageBuffer[SysExBufferSize];
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size_t m_nMessageLength;
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};
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#endif
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