/*
** Command & Conquer Red Alert(tm)
** Copyright 2025 Electronic Arts Inc.
**
** 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 3 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, see <http://www.gnu.org/licenses/>.
*/
/***************************************************************************
** C O N F I D E N T I A L --- W E S T W O O D A S S O C I A T E S **
***************************************************************************
* *
* Project Name : WWLIB *
* *
* File Name : PLAYCD.H *
* *
* Programmer : STEVE WETHERILL *
* *
* Start Date : 5/13/94 *
* *
* Last Update : June 4, 1994 [SW] *
* *
*-------------------------------------------------------------------------*/
#ifndef PLAYCD_H
#define PLAYCD_H
/* ==================================================================== */
/* Defines */
/* ==================================================================== */
#define CHLEFT 0
#define CHRIGHT 1
#define CHBOTH 2
#define AUDIO_START_MIN 1
#define AUDIO_START_SEC 44
typedef struct {
unsigned short seg ;
unsigned short sel ;
} SEGSEL ;
extern "C" int DPMI_real_alloc ( UINT , SEGSEL * , USHORT * ) ;
extern "C" int DPMI_real_free ( SEGSEL ) ;
extern "C" void DPMI_real_intr ( int , union REGS * , struct SREGS * );
extern "C" void DPMI_real_call ( void * funct , union REGS * , struct SREGS * );
/* ==================================================================== */
/* Data structures */
/* ==================================================================== */
// Audio Track Info request block
struct TinfoType {
UBYTE Length;
UBYTE SubCd;
UBYTE Command;
UWORD Status;
UBYTE Rsvd[8];
UBYTE MDescr;
UWORD TrnsAdOff;
UWORD TrnsAdSeg;
UWORD CntTrns;
UWORD StSect;
UWORD VolIDOff;
UWORD VolIDSeg;
UBYTE TrInfo;
UBYTE Track;
ULONG Start;
UBYTE TrCtrl;
};
// Audio Track Status Control Block
struct StatType {
UBYTE Length;
UBYTE SubCd;
UBYTE Command;
UWORD Status;
UBYTE Rsvd[8];
UBYTE MDescr;
UWORD TrnsAdOff;
UWORD TrnsAdSeg;
UWORD CntTrns;
UWORD StSect;
UWORD VolIDOff;
UWORD VolIDSeg;
UBYTE StatInfo;
UWORD Stat;
ULONG Start;
ULONG End;
};
// Audio Track Volume control block
struct VolmType {
UBYTE Length;
UBYTE SubCd;
UBYTE Command;
UWORD Status;
UBYTE Rsvd[8];
UBYTE MDescr;
UWORD TrnsAdOff;
UWORD TrnsAdSeg;
UWORD CntTrns;
UWORD StSect;
UWORD VolIDOff;
UWORD VolIDSeg;
UBYTE TrInfo;
UBYTE In0;
UBYTE Vol0;
UBYTE In1;
UBYTE Vol1;
UBYTE In2;
UBYTE Vol2;
UBYTE In3;
UBYTE Vol3;
};
// Audio Track Play request block
struct PlayType {
UBYTE Length;
UBYTE SubCd;
UBYTE Command;
UWORD Status;
UBYTE Rsvd[8];
UBYTE AddrMd;
ULONG Start;
ULONG CntSect;
};
// Audio Track Stop request block
struct StopType {
UBYTE Length;
UBYTE SubCd;
UBYTE Command;
UWORD Status;
UBYTE Rsvd[8];
};
/***************************************************************************
* GetCDClass -- object which will return logical CD drive *
* *
* HISTORY: *
* 06/04/1994 SW : Created. *
*=========================================================================*/
#define MAX_CD_DRIVES 26
#define NO_CD_DRIVE -1
class GetCDClass {
protected:
union REGS regs;
struct SREGS sregs;
SEGSEL cdDrive_addrp;
UWORD largestp;
int CDDrives[MAX_CD_DRIVES]; //Array containing CD drive letters
int CDCount; //Number of available CD drives
int CDIndex;
public:
GetCDClass(VOID); // This is the default constructor
~GetCDClass(VOID); // This is the destructor
inline int Get_First_CD_Drive(void);
inline int Get_Next_CD_Drive(void);
inline int Get_Number_Of_Drives(void) {return (CDCount);};
private:
VOID GetCDDrive(VOID);
};
/***********************************************************************************************
* GCDC::Get_Next_CD_Drive -- return the logical drive number of the next CD drive *
* *
* *
* *
* INPUT: Nothing *
* *
* OUTPUT: Logical drive number of a cd drive or -1 if none *
* *
* WARNINGS: None *
* *
* HISTORY: *
* 5/21/96 3:50PM ST : Created *
*=============================================================================================*/
inline int GetCDClass::Get_Next_CD_Drive(void)
{
if (CDCount){
if (CDIndex == CDCount) CDIndex = 0;
return (CDDrives[CDIndex++]);
}else{
return (-1);
}
}
/***************************************************************************
* GCDC::Get_First_CD_Drive -- return the number of the first CD drive *
* *
* *
* *
* INPUT: *
* none *
* OUTPUT: *
* logical drive number *
* WARNINGS: *
* *
* HISTORY: *
* 05/26/1994 SW : Created. *
* 12/4/95 ST : fixed for Win95 *
*=========================================================================*/
inline int GetCDClass::Get_First_CD_Drive(void)
{
CDIndex = 0;
return (Get_Next_CD_Drive());
}
/***************************************************************************
* RedBookClass -- adds red book functionality *
* *
* this class inherits from GetCDClass and adds red book play functionality*
* *
* *
* HISTORY: *
* 06/04/1994 SW : Created. *
*=========================================================================*/
class RedBookClass : public GetCDClass {
private:
SEGSEL Tinfo_addrp;
SEGSEL Stat_addrp;
SEGSEL Stop_addrp;
SEGSEL Volm_addrp;
SEGSEL Play_addrp;
StopType Stop;
PlayType Play;
VolmType Volm;
StatType Stat;
TinfoType Tinfo;
public:
RedBookClass(VOID); // This is the default constructor
~RedBookClass(VOID); // This is the destructor
ULONG RedToHS(ULONG i);
ULONG MSFtoRed(UBYTE m, UBYTE s, UBYTE f);
VOID FullCDVolume(UBYTE chan);
VOID PlayTrack(UWORD track);
VOID Play_CD_MSL(UWORD min_sec, UWORD len);
VOID PlayMSF(UBYTE startM, UBYTE startS, UBYTE startF,
UBYTE endM, UBYTE endS, UBYTE endF, UBYTE chan);
UWORD CheckCDMusic(VOID);
VOID StopCDMusic(VOID);
};
/***************************** End of Playcd.h ****************************/
#endif // PLAYCD_H