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//
// ID Engine
// ID_SD.h - Sound Manager Header
// Version for Wolfenstein
// By Jason Blochowiak
//
#ifndef __ID_SD__
#define __ID_SD__
#define alOut(n,b) YM3812Write(oplChip, n, b)
#define TickBase 70 // 70Hz per tick - used as a base for timer 0
typedef enum
{
sdm_Off,
sdm_PC,sdm_AdLib,
} SDMode;
typedef enum
{
smm_Off,smm_AdLib
} SMMode;
typedef enum
{
sds_Off,sds_PC,sds_SoundBlaster
} SDSMode;
typedef struct
{
longword length;
word priority;
} SoundCommon;
#define ORIG_SOUNDCOMMON_SIZE 6
// PC Sound stuff
#define pcTimer 0x42
#define pcTAccess 0x43
#define pcSpeaker 0x61
#define pcSpkBits 3
typedef struct
{
SoundCommon common;
byte data[1];
} PCSound;
// Register addresses
// Operator stuff
#define alChar 0x20
#define alScale 0x40
#define alAttack 0x60
#define alSus 0x80
#define alWave 0xe0
// Channel stuff
#define alFreqL 0xa0
#define alFreqH 0xb0
#define alFeedCon 0xc0
// Global stuff
#define alEffects 0xbd
typedef struct
{
byte mChar,cChar,
mScale,cScale,
mAttack,cAttack,
mSus,cSus,
mWave,cWave,
nConn,
// These are only for Muse - these bytes are really unused
voice,
mode;
byte unused[3];
} Instrument;
#define ORIG_INSTRUMENT_SIZE 16
typedef struct
{
SoundCommon common;
Instrument inst;
byte block;
byte data[1];
} AdLibSound;
#define ORIG_ADLIBSOUND_SIZE (ORIG_SOUNDCOMMON_SIZE + ORIG_INSTRUMENT_SIZE + 2)
//
// Sequencing stuff
//
#define sqMaxTracks 10
typedef struct
{
word length;
word values[1];
} MusicGroup;
typedef struct
{
int valid;
fixed globalsoundx, globalsoundy;
} globalsoundpos;
extern globalsoundpos channelSoundPos[];
// Global variables
extern boolean AdLibPresent,
SoundBlasterPresent,
SoundPositioned;
extern SDMode SoundMode;
extern SDSMode DigiMode;
extern SMMode MusicMode;
extern int DigiMap[];
extern int DigiChannel[];
#define GetTimeCount() ((SDL_GetTicks()*7)/100)
inline void Delay(int wolfticks)
{
if(wolfticks>0) SDL_Delay(wolfticks * 100 / 7);
}
// Function prototypes
extern void SD_Startup(void),
SD_Shutdown(void);
extern int SD_GetChannelForDigi(int which);
extern void SD_PositionSound(int leftvol,int rightvol);
extern boolean SD_PlaySound(soundnames sound);
extern void SD_SetPosition(int channel, int leftvol,int rightvol);
extern void SD_StopSound(void),
SD_WaitSoundDone(void);
extern void SD_StartMusic(int chunk);
extern void SD_ContinueMusic(int chunk, int startoffs);
extern void SD_MusicOn(void),
SD_FadeOutMusic(void);
extern int SD_MusicOff(void);
extern boolean SD_MusicPlaying(void);
extern boolean SD_SetSoundMode(SDMode mode);
extern boolean SD_SetMusicMode(SMMode mode);
extern word SD_SoundPlaying(void);
extern void SD_SetDigiDevice(SDSMode);
extern void SD_PrepareSound(int which);
extern int SD_PlayDigitized(word which,int leftpos,int rightpos);
extern void SD_StopDigitized(void);
#endif
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