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1f0e905160
This commit adds MIDI parser subclasses for the Simon 1 GMF format and for the SMF variant used by the Windows versions of Simon 1 and 2. The GMF format was handled by the SMF parser, which can now be removed from that class. It also fixes the tempos not matching the DOS interpreter. The Simon Windows SMF variant was handled in the AGOS midi class. Moving it to a separate parser allows for some cleaner code in that class. It now also corrects the tempos to match those of the DOS interpreter.
72 lines
2.5 KiB
C++
72 lines
2.5 KiB
C++
/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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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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*/
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#ifndef AUDIO_MIDIPARSER_SMF_H
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#define AUDIO_MIDIPARSER_SMF_H
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#include "audio/midiparser.h"
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/**
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* The Standard MIDI File version of MidiParser.
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*/
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class MidiParser_SMF : public MidiParser {
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protected:
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byte *_buffer;
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bool _malformedPitchBends;
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/**
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* The source number to use when sending MIDI messages to the driver.
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* When using multiple sources, use source 0 and higher. This must be
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* used when source volume or channel locking is used.
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* By default this is -1, which means the parser is the only source
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* of MIDI messages and multiple source functionality is disabled.
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*/
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int8 _source;
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protected:
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/**
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* Compresses the specified type 1 MIDI tracks to a single type 0 track.
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*
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* @param tracks Pointer to an array of type 1 tracks.
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* @param numTracks The number of type 1 tracks.
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* @param buffer Buffer which will contain the compressed type 0 track.
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* @param malformedPitchBends True if broken pitch bend events consisting
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* of just the command byte should be ignored. This is only useful for MIDI
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* data which has this specific problem.
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* @return The size of the compressed type 0 track in bytes.
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*/
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uint32 compressToType0(byte *tracks[], byte numTracks, byte *buffer, bool malformedPitchBends = false);
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void parseNextEvent(EventInfo &info) override;
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void sendToDriver(uint32 b) override;
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void sendMetaEventToDriver(byte type, byte *data, uint16 length) override;
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public:
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MidiParser_SMF(int8 source = -1) : _buffer(nullptr), _malformedPitchBends(false), _source(source) {}
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~MidiParser_SMF();
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bool loadMusic(byte *data, uint32 size) override;
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void property(int property, int value) override;
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int32 determineDataSize(Common::SeekableReadStream *stream) override;
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};
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#endif
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