QUEEN: Implement original music volume handling

1 files changed, 130 insertions, 0 deletions

diff --git a/engines/queen/midiadlib.h b/engines/queen/midiadlib.h
new file mode 100644
index 0000000000..d5590253cb
--- /dev/null
+++ b/engines/queen/midiadlib.h
@@ -0,0 +1,130 @@
+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * 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 2
+ * 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, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ */
+
+#include "audio/fmopl.h"
+#include "audio/mididrv.h"
+#include "audio/softsynth/emumidi.h"
+
+namespace Queen {
+
+class AdLibMidiDriver : public MidiDriver_Emulated {
+public:
+
+	AdLibMidiDriver(Audio::Mixer *mixer) : MidiDriver_Emulated(mixer) { _adlibWaveformSelect = 0; }
+	~AdLibMidiDriver() {}
+
+	// MidiDriver
+	int open();
+	void close();
+	void send(uint32 b);
+	void metaEvent(byte type, byte *data, uint16 length);
+	MidiChannel *allocateChannel() { return 0; }
+	MidiChannel *getPercussionChannel() { return 0; }
+	void setTimerCallback(void *timerParam, Common::TimerManager::TimerProc timerProc);
+
+	// AudioStream
+	int readBuffer(int16 *data, const int numSamples);
+	bool isStereo() const { return false; }
+	int getRate() const { return _mixer->getOutputRate(); }
+
+	// MidiDriver_Emulated
+	void generateSamples(int16 *buf, int len);
+
+	void setVolume(uint32 volume);
+
+private:
+
+	void handleMidiEvent0x90_NoteOn(int channel, int param1, int param2);
+	void handleSequencerSpecificMetaEvent1(int channel, const uint8 *data);
+	void handleSequencerSpecificMetaEvent2(uint8 value);
+	void handleSequencerSpecificMetaEvent3(uint8 value);
+
+	void adlibWrite(uint8 port, uint8 value);
+	void adlibSetupCard();
+	void adlibSetupChannels(int fl);
+	void adlibResetAmpVibratoRhythm(int am, int vib, int kso);
+	void adlibResetChannels();
+	void adlibSetAmpVibratoRhythm();
+	void adlibSetCSMKeyboardSplit();
+	void adlibSetNoteMul(int mul);
+	void adlibSetWaveformSelect(int fl);
+	void adlibSetPitchBend(int channel, int range);
+	void adlibPlayNote(int channel);
+	uint8 adlibPlayNoteHelper(int channel, int note1, int note2, int oct);
+	void adlibTurnNoteOff(int channel);
+	void adlibTurnNoteOn(int channel, int note);
+	void adlibSetupChannelFromSequence(int channel, const uint8 *src, int fl);
+	void adlibSetupChannel(int channel, const uint16 *src, int fl);
+	void adlibSetChannelVolume(int channel, uint8 volume);
+	void adlibSetNoteVolume(int channel, int volume);
+	void adlibSetupChannelHelper(int channel);
+	void adlibSetChannel0x40(int channel);
+	void adlibSetChannel0xC0(int channel);
+	void adlibSetChannel0x60(int channel);
+	void adlibSetChannel0x80(int channel);
+	void adlibSetChannel0x20(int channel);
+	void adlibSetChannel0xE0(int channel);
+
+	void onTimer();
+
+	OPL::OPL *_opl;
+	int _midiNumberOfChannels;
+	int _adlibNoteMul;
+	int _adlibWaveformSelect;
+	int _adlibAMDepthEq48;
+	int _adlibVibratoDepthEq14;
+	int _adlibRhythmEnabled;
+	int _adlibKeyboardSplitOn;
+	int _adlibVibratoRhythm;
+	uint8 _midiChannelsFreqTable[9];
+	uint8 _adlibChannelsLevelKeyScalingTable[11];
+	uint8 _adlibSetupChannelSequence1[14 * 18];
+	uint16 _adlibSetupChannelSequence2[14];
+	int16 _midiChannelsNote2Table[9];
+	uint8 _midiChannelsNote1Table[9];
+	uint8 _midiChannelsOctTable[9];
+	uint16 _adlibChannelsVolume[11];
+	uint16 _adlibMetaSequenceData[28];
+	uint8 _adlibChannelsVolumeTable[11];
+
+	Common::TimerManager::TimerProc _adlibTimerProc;
+	void *_adlibTimerParam;
+
+	static const uint8 _adlibChannelsMappingTable1[];
+	static const uint8 _adlibChannelsNoFeedback[];
+	static const uint8 _adlibChannelsMappingTable2[];
+	static const uint8 _adlibChannelsMappingTable3[];
+	static const uint8 _adlibChannelsKeyScalingTable1[];
+	static const uint8 _adlibChannelsKeyScalingTable2[];
+	static const uint8 _adlibInitSequenceData1[];
+	static const uint8 _adlibInitSequenceData2[];
+	static const uint8 _adlibInitSequenceData3[];
+	static const uint8 _adlibInitSequenceData4[];
+	static const uint8 _adlibInitSequenceData5[];
+	static const uint8 _adlibInitSequenceData6[];
+	static const uint8 _adlibInitSequenceData7[];
+	static const uint8 _adlibInitSequenceData8[];
+	static const int16 _midiChannelsNoteTable[];
+	static const int16 _midiNoteFreqTable[];
+};
+
+} // End of namespace Queen