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/* 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.
*
*/
/*
* This code is based on original Soltys source code
* Copyright (c) 1994-1995 Janus B. Wisniewski and L.K. Avalon
*/
// ******************************************************
// * Sound Driver by Hedges (c) 1995 LK AVALON *
// * Ver 1.00: 01-Mar-95 *
// * Ver 1.10: 03-Mar-95 *
// * Ver 1.20: 07-Mar-95 *
// * Ver 1.30: 09-Mar-95 *
// * Ver 1.40: 11-Mar-95 *
// ******************************************************
#ifndef __SNDDRV__
#define __SNDDRV__
// ******************************************************
// * Constants *
// ******************************************************
// available devices
enum DEV_TYPE { DEV_AUTO = -1, // auto-detect mode
DEV_QUIET, // disable sound
DEV_SB, // sb/pro/16/awe32
DEV_GUS, // gus/max
DEV_GM // general midi
};
#define SERR_OK 0 // no error
#define SERR_INITFAIL 1 // couldn't initialize
#define SERR_BADDDEV 128 // bad device
// driver info
struct DRVINFO
{
DEV_TYPE DDEV; // digi device
DEV_TYPE MDEV; // midi device
uint16 DBASE; // digi base port
uint16 DDMA; // digi dma no
uint16 DIRQ; // digi irq no
uint16 MBASE; // midi base port
union
{
struct
{
uint16 DR : 4;
uint16 DL : 4;
uint16 MR : 4;
uint16 ML : 4;
} VOL4;
struct
{
uint8 D; // digi volume
uint8 M; // midi volume
} VOL2;
};
};
// sample info
struct SMPINFO
{
uint8 * saddr; // address
uint16 slen; // length
uint16 span; // left/right pan (0-15)
int sflag; // flag
};
// ******************************************************
// * Data *
// ******************************************************
// driver info
extern DRVINFO SNDDrvInfo;
// midi player flag (1 means we are playing)
extern uint16 MIDIPlayFlag;
// midi song end flag (1 means we have crossed end mark)
extern uint16 MIDIEndFlag;
// ******************************************************
// * Driver Code *
// ******************************************************
// Init Digi Device
EC void SNDInit (void);
// Close Digi Device
EC void SNDDone (void);
// Set Volume
EC void SNDSetVolume (void);
// Start Digi
EC void SNDDigiStart (SMPINFO *PSmpInfo);
// Stop Digi
EC void SNDDigiStop (SMPINFO *PSmpInfo);
// Start MIDI File
EC void SNDMIDIStart (uint8 *MIDFile);
// Stop MIDI File
EC void SNDMIDIStop (void);
// Play MIDI File (to be called while interrupting)
// WARNING: Uses ALL registers!
EC void SNDMIDIPlay (void);
#endif
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