moved music drivers into seperated directory, added music support for diskdemo's adlib driver version.

(maybe other sky versions also have this older adlib driver?)

svn-id: r8069

1 files changed, 101 insertions, 0 deletions

diff --git a/sky/music/adlibchannel.h b/sky/music/adlibchannel.h
new file mode 100644
index 0000000000..a9b43c3f9b
--- /dev/null
+++ b/sky/music/adlibchannel.h
@@ -0,0 +1,101 @@
+/* ScummVM - Scumm Interpreter
+ * Copyright (C) 2003 The ScummVM project
+ *
+ * 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., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+ *
+ * $Header$
+ *
+ */
+
+#ifndef ADLIBCHANNEL_H
+#define ADLIBCHANNEL_H
+
+#include "stdafx.h"
+#include "common/engine.h"
+#include "sky/music/musicbase.h"
+
+typedef struct {
+	uint8 ad_Op1, ad_Op2;
+	uint8 sr_Op1, sr_Op2;
+	uint8 ampMod_Op1, ampMod_Op2;
+	uint8 waveSelect_Op1, waveSelect_Op2;
+	uint8 bindedEffect;
+	uint8 feedBack;
+	uint8 totOutLev_Op1, totOutLev_Op2;
+	uint8 scalingLevel;
+	uint8 pad1, pad2, pad3;
+} InstrumentStruct;
+
+typedef struct {
+	uint16 eventDataPtr;
+	int32 nextEventTime;
+	uint16 startOfData;
+	uint8 adlibChannelNumber;
+	uint8 lastCommand;
+	uint8 channelActive;
+	uint8 note;
+	uint8 adlibReg1, adlibReg2;
+	InstrumentStruct *instrumentData;
+	uint8 assignedInstrument;
+	uint8 channelVolume;
+	uint8 padding; // field_12 / not used by original driver
+	uint8 tremoVibro;
+	uint8 freqDataSize;
+	uint8 freqOffset;
+	uint16 frequency;
+} AdlibChannelType;
+
+class SkyAdlibChannel : public SkyChannelBase {
+public:
+	SkyAdlibChannel(uint8 *pMusicData, uint16 startOfData, uint32 version);
+	virtual void stopNote(void);
+	virtual uint8 process(uint16 aktTime);
+	virtual void updateVolume(uint16 pVolume);
+private:
+	uint32 _gameVersion;
+	uint8 *_musicData;
+	uint16 _musicVolume;
+	AdlibChannelType _channelData;
+	//-
+	InstrumentStruct *_instruments;
+	uint16 *_frequenceTable;
+	uint8 *_instrumentMap;
+    uint8 *_registerTable, *_opOutputTable;
+	uint8 *_adlibRegMirror;
+	//-                          normal subs
+	void setRegister(uint8 regNum, uint8 value);
+	int32 getNextEventTime(void);
+	uint16 getNextNote(uint8 param);
+	void adlibSetupInstrument(void);
+	void setupInstrument(uint8 opcode);
+	void setupChannelVolume(uint8 volume);
+    //-                          Streamfunctions from Command90hTable
+	void com90_caseNoteOff(void);       // 0
+	void com90_stopChannel(void);       // 1
+	void com90_setupInstrument(void);   // 2
+	uint8 com90_updateTempo(void);       // 3
+	//void com90_dummy(void);           // 4
+	void com90_getFreqOffset(void);     // 5
+	void com90_getChannelVolume(void);  // 6
+	void com90_getTremoVibro(void);     // 7
+	void com90_rewindMusic(void);       // 8
+	void com90_keyOff(void);            // 9
+	//void com90_error(void);           // 10
+	//void com90_doLodsb(void);         // 11
+	void com90_setStartOfData(void);    // 12
+	//void com90_do_two_Lodsb(void);    // 13
+};
+
+#endif //ADLIBCHANNEL_H