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-rw-r--r--src/hexen/i_cdmus.c2063
1 files changed, 1040 insertions, 1023 deletions
diff --git a/src/hexen/i_cdmus.c b/src/hexen/i_cdmus.c
index dc2e91bc..b6182d91 100644
--- a/src/hexen/i_cdmus.c
+++ b/src/hexen/i_cdmus.c
@@ -1,1023 +1,1040 @@
-
-//**************************************************************************
-//**
-//** i_cdmus.c
-//**
-//**************************************************************************
-
-// HEADER FILES ------------------------------------------------------------
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <dos.h>
-#include <stddef.h>
-#include <string.h>
-#include "h2def.h"
-#include "i_sound.h"
-
-// MACROS ------------------------------------------------------------------
-
-#define MAX_AUDIO_TRACKS 25
-#define MULTIPLEX_INT 0x2f
-#define CDROM_GETDRIVECOUNT 0x1500
-#define CDROM_SENDDEVICEREQ 0x1510
-#define CDROM_GETVERSION 0x150c
-#define HSG_MODE 0
-#define RED_MODE 1
-#define DRC_IOCTLINPUT 0x03
-#define DRC_IOCTLOUTPUT 0x0c
-#define DRC_PLAYAUDIO 0x84
-#define DRC_STOPAUDIO 0x85
-#define DRC_RESUMEAUDIO 0x88
-
-#define DPMI_INT 0x31
-#define DPMI_ALLOCREALMEM 0x0100
-#define DPMI_FREEREALMEM 0x0101
-#define DPMI_SIMREALINT 0x0300
-
-// IOCTL input commands
-
-#define ADRDEVHEAD 0 // Return Address of Device Header
-#define HEADLOCATION 1 // Location of Head
-#define RESERVED 2 // Reserved
-#define ERRSTATISTICS 3 // Error Statistics
-#define AUDIOCHANINFO 4 // Audio Channel Info
-#define READDRVBYTES 5 // Read Drive Bytes
-#define DEVICESTATUS 6 // Device Status
-#define GETSECTORSIZE 7 // Return Sector Size
-#define GETVOLSIZE 8 // Return Volume Size
-#define MEDIACHANGED 9 // Media Changed
-#define AUDIODISKINFO 10 // Audio Disk Info
-#define AUDIOTRACKINFO 11 // Audio Track Info
-#define AUDIOQCHANINFO 12 // Audio Q-Channel Info
-#define AUDIOSUBINFO 13 // Audio Sub-Channel Info
-#define UPCCODE 14 // UPC Code
-#define AUDIOSTATUSINFO 15 // Audio Status Info
-
-// IOCTL output commands
-
-#define EJECTDISK 0 // Eject Disk
-#define DOORLOCK 1 // Lock/Unlock Door
-#define RESETDRIVE 2 // Reset Drive
-#define AUDIOCHANCONTROL 3 // Audio Channel Control
-#define WRITEDEVCONTROL 4 // Write Device Control String
-#define CLOSETRAY 5 // Close Tray
-
-// TYPES -------------------------------------------------------------------
-
-typedef signed char S_BYTE;
-typedef unsigned char U_BYTE;
-typedef signed short S_WORD;
-typedef unsigned short U_WORD;
-typedef signed int S_LONG;
-typedef unsigned int U_LONG;
-
-typedef struct {
- U_LONG size;
- void **address;
- U_WORD *segment;
- U_WORD *selector;
-} DOSChunk_t;
-
-typedef struct {
- U_LONG edi;
- U_LONG esi;
- U_LONG ebp;
- U_LONG reserved;
- U_LONG ebx;
- U_LONG edx;
- U_LONG ecx;
- U_LONG eax;
- U_WORD flags;
- U_WORD es;
- U_WORD ds;
- U_WORD fs;
- U_WORD gs;
- U_WORD ip;
- U_WORD cs;
- U_WORD sp;
- U_WORD ss;
-} RegBlock_t;
-
-typedef struct {
- short lengthMin;
- short lengthSec;
- int redStart;
- int sectorStart;
- int sectorLength;
-} AudioTrack_t;
-
-// EXTERNAL FUNCTION PROTOTYPES --------------------------------------------
-
-// PUBLIC FUNCTION PROTOTYPES ----------------------------------------------
-
-// PRIVATE FUNCTION PROTOTYPES ---------------------------------------------
-
-static U_WORD InputIOCTL(S_WORD request, U_LONG pctrlblk);
-static U_WORD OutputIOCTL(S_WORD request, U_LONG pctrlblk);
-static U_LONG RedToSectors(U_LONG red);
-static int AllocIOCTLBuffers(void);
-static void DPMI_SimRealInt(U_LONG intr, RegBlock_t *rBlock);
-static void *DPMI_AllocRealMem(U_LONG size, U_WORD *segment,
- U_WORD *selector);
-static void DPMI_FreeRealMem(U_WORD selector);
-
-// EXTERNAL DATA DECLARATIONS ----------------------------------------------
-
-// PUBLIC DATA DEFINITIONS -------------------------------------------------
-
-int cd_Error;
-
-// PRIVATE DATA DEFINITIONS ------------------------------------------------
-
-static int cd_DriveCount;
-static int cd_FirstDrive;
-static int cd_CurDrive;
-static U_WORD cd_Version;
-static int cd_FirstTrack;
-static int cd_LastTrack;
-static int cd_TrackCount;
-static U_WORD cd_LeadOutMin;
-static U_WORD cd_LeadOutSec;
-static U_LONG cd_LeadOutRed;
-static U_LONG cd_LeadOutSector;
-static U_LONG cd_IOCTLBufferTotal;
-static AudioTrack_t cd_AudioTracks[MAX_AUDIO_TRACKS];
-
-static int OkInit = 0;
-
-static RegBlock_t RegBlock;
-
-static struct PlayReq_s { // CD-ROM Play Audio Device Request Struct
- U_BYTE headerSize;
- U_BYTE subUnitCode;
- U_BYTE command; // = DRC_PLAYAUDIO
- U_WORD status;
- U_BYTE reserved[8];
- U_BYTE addressMode;
- U_LONG startSector;
- U_LONG numberToRead;
-} *cd_PlayReq;
-static U_WORD cd_PlayReqSeg;
-static U_WORD cd_PlayReqSel;
-
-static struct StopReq_s { // CD-ROM Stop Audio Device Request Struct
- U_BYTE headerSize;
- U_BYTE subUnitCode;
- U_BYTE command; // = DRC_STOPAUDIO
- U_WORD status;
- U_BYTE reserved[8];
-} *cd_StopReq;
-static U_WORD cd_StopReqSeg;
-static U_WORD cd_StopReqSel;
-
-static struct ResumeReq_s { // CD-ROM Resume Audio Device Request Struct
- U_BYTE headerSize;
- U_BYTE subUnitCode;
- U_BYTE command; // = DRC_RESUMEAUDIO
- U_WORD status;
- U_BYTE reserved[8];
-} *cd_ResumeReq;
-static U_WORD cd_ResumeReqSeg;
-static U_WORD cd_ResumeReqSel;
-
-// IOCTL Input command data buffer structures
-
-static struct IOCTLIn_s { // IOCTL Input Struct
- U_BYTE headerSize;
- U_BYTE subUnitCode;
- U_BYTE command; // = DRC_IOCTLINPUT
- U_WORD status;
- U_BYTE reserved[8];
- U_BYTE mediaDescriptor;
- U_LONG ctrlBlkAddr;
- U_WORD tranSize;
- U_WORD startSector;
- U_LONG volPtr;
-} *cd_IOCTLIn;
-static U_WORD cd_IOCTLInSeg;
-static U_WORD cd_IOCTLInSel;
-
-static struct RAddrDevHead_s {
- U_BYTE code; // ADRDEVHEAD
- U_LONG devHdrAddr; // Address of device header
-} *cd_RAddrDevHead;
-static U_WORD cd_RAddrDevHeadSeg;
-static U_WORD cd_RAddrDevHeadSel;
-
-static struct LocHead_s {
- U_BYTE code; // HEADLOCATION
- U_BYTE addrMode; // Addressing mode
- U_LONG headLocation; // Location of drive head
-} *cd_LocHead;
-static U_WORD cd_LocHeadSeg;
-static U_WORD cd_LocHeadSel;
-
-static struct ErrStat_s {
- U_BYTE code; // ERRSTATISTICS
- U_BYTE errVal; // Error statistics
-} *cd_ErrStat;
-static U_WORD cd_ErrStatSeg;
-static U_WORD cd_ErrStatSel;
-
-static struct AudChanInfo_s {
- U_BYTE code; // AUDIOCHANINFO
- U_BYTE inChanOut0; // Input chan(0,1,2,or 3) for output chan 0
- U_BYTE volumeOut0; // Volume control (0-0xff) for output chan 0
- U_BYTE inChanOut1; // Input chan(0,1,2,or 3) for output chan 1
- U_BYTE volumeOut1; // Volume control (0-0xff) for output chan 1
- U_BYTE inChanOut2; // Input chan(0,1,2,or 3) for output chan 2
- U_BYTE volumeOut2; // Volume control (0-0xff) for output chan 2
- U_BYTE inChanOut3; // Input chan(0,1,2,or 3) for output chan 3
- U_BYTE volumeOut3; // Volume control (0-0xff) for output chan 3
-} *cd_AudChanInfo;
-static U_WORD cd_AudChanInfoSeg;
-static U_WORD cd_AudChanInfoSel;
-
-static struct RDrvBytes_s {
- U_BYTE code; // READDRVBYTES
- U_BYTE numBytes; // Number of bytes to read
- U_BYTE rBuffer[128]; // Read buffer
-} *cd_RDrvBytes;
-static U_WORD cd_RDrvBytesSeg;
-static U_WORD cd_RDrvBytesSel;
-
-static struct DevStat_s {
- U_BYTE code; // DEVICESTATUS
- U_LONG devParams; // Device parameters
-} *cd_DevStat;
-static U_WORD cd_DevStatSeg;
-static U_WORD cd_DevStatSel;
-
-static struct SectSize_s {
- U_BYTE code; // GETSECTORSIZE
- U_BYTE readMode; // Read mode
- U_WORD sectorSize; // Sector size
-} *cd_SectSize;
-static U_WORD cd_SectSizeSeg;
-static U_WORD cd_SectSizeSel;
-
-static struct VolSize_s {
- U_BYTE code; // GETVOLSIZE
- U_LONG volumeSize; // Volume size
-} *cd_VolSize;
-static U_WORD cd_VolSizeSeg;
-static U_WORD cd_VolSizeSel;
-
-static struct MedChng_s {
- U_BYTE code; // MEDIACHANGED
- U_BYTE changed; // Media byte
-} *cd_MedChng;
-static U_WORD cd_MedChngSeg;
-static U_WORD cd_MedChngSel;
-
-static struct DiskInfo_s {
- U_BYTE code; // AUDIODISKINFO
- U_BYTE lowTrack; // Lowest track number
- U_BYTE highTrack; // Highest track number
- U_LONG startLeadOut; // Starting point of the lead-out track
-} *cd_DiskInfo;
-static U_WORD cd_DiskInfoSeg;
-static U_WORD cd_DiskInfoSel;
-
-static struct TrackInfo_s {
- U_BYTE code; // AUDIOTRACKINFO
- U_BYTE track; // Track number
- U_LONG start; // Starting point of the track
- U_BYTE ctrlInfo; // Track control information
-} *cd_TrackInfo;
-static U_WORD cd_TrackInfoSeg;
-static U_WORD cd_TrackInfoSel;
-
-static struct QInfo_s {
- U_BYTE code; // AUDIOQCHANINFO
- U_BYTE control; // CONTROL and ADR byte
- U_BYTE tno; // Track number (TNO)
- U_BYTE index; // (POINT) or Index(X)
- U_BYTE min; // (MIN) Running time within a track
- U_BYTE sec; // (SEC) " " " " "
- U_BYTE frame; // (FRAME) " " " " "
- U_BYTE zero; // (ZERO) " " " " "
- U_BYTE aMin; // (AMIN) or (PMIN) Running time on disk
- U_BYTE aSec; // (ASEC) or (PSEC) " " " "
- U_BYTE aFrame; // (AFRAME) or (PFRAME)" " " "
-} *cd_QInfo;
-static U_WORD cd_QInfoSeg;
-static U_WORD cd_QInfoSel;
-
-static struct SubChanInfo_s {
- U_BYTE code; // AUDIOSUBINFO
- U_LONG startSectAddr; // Starting sector address
- U_LONG transAddr; // Transfer address
- U_LONG numSects; // Number of sectors to read
-} *cd_SubChanInfo;
-static U_WORD cd_SubChanInfoSeg;
-static U_WORD cd_SubChanInfoSel;
-
-static struct UPCCode_s {
- U_BYTE code; // UPCCODE
- U_BYTE control; // CONTROL and ADR byte
- U_BYTE upc[7]; // UPC/EAN code
- U_BYTE zero; // Zero
- U_BYTE aFrame; // Aframe
-} *cd_UPCCode;
-static U_WORD cd_UPCCodeSeg;
-static U_WORD cd_UPCCodeSel;
-
-static struct AudStat_s {
- U_BYTE code; // AUDIOSTATUSINFO
- U_WORD status; // Audio status bits
- U_LONG startPlay; // Starting location of last Play/Resume
- U_LONG endPlay; // Ending location for last Play/Resume
-} *cd_AudStat;
-static U_WORD cd_AudStatSeg;
-static U_WORD cd_AudStatSel;
-
-// IOCTL Output command data buffer structures
-
-static struct IOCTLOut_s { // IOCTL Output struct
- U_BYTE headerSize;
- U_BYTE subUnitCode;
- U_BYTE command; // = DRC_IOCTLOUTPUT
- U_WORD status;
- U_BYTE reserved[8];
- U_BYTE mediaDescriptor;
- U_LONG ctrlBlkAddr;
- U_WORD tranSize;
- U_WORD startSector;
- U_LONG volPtr;
-} *cd_IOCTLOut;
-static U_WORD cd_IOCTLOutSeg;
-static U_WORD cd_IOCTLOutSel;
-
-static struct Eject_s {
- U_BYTE code; // EJECTDISK
-} *cd_Eject;
-static U_WORD cd_EjectSeg;
-static U_WORD cd_EjectSel;
-
-static struct LockDoor_s {
- U_BYTE code; // DOORLOCK
- U_BYTE lock; // Lock function : 0 = unlock, 1 = lock
-} *cd_LockDoor;
-static U_WORD cd_LockDoorSeg;
-static U_WORD cd_LockDoorSel;
-
-static struct ResetDrv_s {
- U_BYTE code; // RESETDRIVE
-} *cd_ResetDrv;
-static U_WORD cd_ResetDrvSeg;
-static U_WORD cd_ResetDrvSel;
-
-static struct AudInfo_s {
- U_BYTE code; // AUDIOCHANCONTROL
- U_BYTE inChanOut0; // Input chan(0,1,2,or 3) for output chan 0
- U_BYTE volumeOut0; // Volume control (0-0xff) for output chan 0
- U_BYTE inChanOut1; // Input chan(0,1,2,or 3) for output chan 1
- U_BYTE volumeOut1; // Volume control (0-0xff) for output chan 1
- U_BYTE inChanOut2; // Input chan(0,1,2,or 3) for output chan 2
- U_BYTE volumeOut2; // Volume control (0-0xff) for output chan 2
- U_BYTE inChanOut3; // Input chan(0,1,2,or 3) for output chan 3
- U_BYTE volumeOut3; // Volume control (0-0xff) for output chan 3
-} *cd_AudInfo;
-static U_WORD cd_AudInfoSeg;
-static U_WORD cd_AudInfoSel;
-
-static struct WDrvBytes_s {
- U_BYTE code; // WRITEDEVCONTROL
- U_BYTE buf[5]; // Write buffer - size ??
-} *cd_WDrvBytes;
-static U_WORD cd_WDrvBytesSeg;
-static U_WORD cd_WDrvBytesSel;
-
-static struct CloseTray_s {
- U_BYTE code; // CLOSETRAY
-} *cd_CloseTray;
-static U_WORD cd_CloseTraySeg;
-static U_WORD cd_CloseTraySel;
-
-static U_WORD InCtrlBlkSize[16] = {
- 0x05, 0x06, 0x00, 0x00,
- 0x09, 0x82, 0x05, 0x04,
- 0x05, 0x02, 0x07, 0x07,
- 0x0b, 0x0d, 0x0b, 0x0b
-};
-
-static U_WORD OutCtrlBlkSize[6] = {
- 0x01, 0x02,
- 0x01, 0x09,
- 0x06, 0x01
-};
-
-// Structures for allocating conventional memory
-
-static DOSChunk_t DOSChunks[] = {
- {
- sizeof(struct PlayReq_s),
- &cd_PlayReq, &cd_PlayReqSeg, &cd_PlayReqSel
- },
- {
- sizeof(struct StopReq_s),
- &cd_StopReq, &cd_StopReqSeg, &cd_StopReqSel
- },
- {
- sizeof(struct ResumeReq_s),
- &cd_ResumeReq, &cd_ResumeReqSeg, &cd_ResumeReqSel
- },
- {
- sizeof(struct IOCTLOut_s),
- &cd_IOCTLOut, &cd_IOCTLOutSeg, &cd_IOCTLOutSel
- },
- {
- sizeof(struct Eject_s),
- &cd_Eject, &cd_EjectSeg, &cd_EjectSel
- },
- {
- sizeof(struct LockDoor_s),
- &cd_LockDoor, &cd_LockDoorSeg, &cd_LockDoorSel
- },
- {
- sizeof(struct ResetDrv_s),
- &cd_ResetDrv, &cd_ResetDrvSeg, &cd_ResetDrvSel
- },
- {
- sizeof(struct AudInfo_s),
- &cd_AudInfo, &cd_AudInfoSeg, &cd_AudInfoSel
- },
- {
- sizeof(struct WDrvBytes_s),
- &cd_WDrvBytes, &cd_WDrvBytesSeg, &cd_WDrvBytesSel
- },
- {
- sizeof(struct CloseTray_s),
- &cd_CloseTray, &cd_CloseTraySeg, &cd_CloseTraySel
- },
- {
- sizeof(struct IOCTLIn_s),
- &cd_IOCTLIn, &cd_IOCTLInSeg, &cd_IOCTLInSel
- },
- {
- sizeof(struct RAddrDevHead_s),
- &cd_RAddrDevHead, &cd_RAddrDevHeadSeg, &cd_RAddrDevHeadSel
- },
- {
- sizeof(struct LocHead_s),
- &cd_LocHead, &cd_LocHeadSeg, &cd_LocHeadSel
- },
- {
- sizeof(struct ErrStat_s),
- &cd_ErrStat, &cd_ErrStatSeg, &cd_ErrStatSel
- },
- {
- sizeof(struct AudChanInfo_s),
- &cd_AudChanInfo, &cd_AudChanInfoSeg, &cd_AudChanInfoSel
- },
- {
- sizeof(struct RDrvBytes_s),
- &cd_RDrvBytes, &cd_RDrvBytesSeg, &cd_RDrvBytesSel
- },
- {
- sizeof(struct DevStat_s),
- &cd_DevStat, &cd_DevStatSeg, &cd_DevStatSel
- },
- {
- sizeof(struct SectSize_s),
- &cd_SectSize, &cd_SectSizeSeg, &cd_SectSizeSel
- },
- {
- sizeof(struct VolSize_s),
- &cd_VolSize, &cd_VolSizeSeg, &cd_VolSizeSel
- },
- {
- sizeof(struct MedChng_s),
- &cd_MedChng, &cd_MedChngSeg, &cd_MedChngSel
- },
- {
- sizeof(struct DiskInfo_s),
- &cd_DiskInfo, &cd_DiskInfoSeg, &cd_DiskInfoSel
- },
- {
- sizeof(struct TrackInfo_s),
- &cd_TrackInfo, &cd_TrackInfoSeg, &cd_TrackInfoSel
- },
- {
- sizeof(struct QInfo_s),
- &cd_QInfo, &cd_QInfoSeg, &cd_QInfoSel
- },
- {
- sizeof(struct SubChanInfo_s),
- &cd_SubChanInfo, &cd_SubChanInfoSeg, &cd_SubChanInfoSel
- },
- {
- sizeof(struct UPCCode_s),
- &cd_UPCCode, &cd_UPCCodeSeg, &cd_UPCCodeSel
- },
- {
- sizeof(struct AudStat_s),
- &cd_AudStat, &cd_AudStatSeg, &cd_AudStatSel
- },
- {
- 0, NULL, NULL, NULL
- }
-};
-
-// CODE --------------------------------------------------------------------
-
-//==========================================================================
-//
-// I_CDMusInit
-//
-// Initializes the CD audio system. Must be called before using any
-// other I_CDMus functions.
-//
-// Returns: 0 (ok) or -1 (error, in cd_Error).
-//
-//==========================================================================
-
-int I_CDMusInit(void)
-{
- int i;
- int sect;
- int maxTrack;
- S_BYTE startMin1 = 0;
- S_BYTE startSec1 = 0;
- S_BYTE startMin2 = 0;
- S_BYTE startSec2 = 0;
- S_BYTE lengthMin = 0;
- S_BYTE lengthSec = 0;
-
- if(OkInit != 1)
- { // Only execute if uninitialized
-
- // Get number of CD-ROM drives and first drive
- memset(&RegBlock, 0, sizeof(RegBlock));
- RegBlock.eax = CDROM_GETDRIVECOUNT;
- RegBlock.ebx = 0;
- DPMI_SimRealInt(MULTIPLEX_INT, &RegBlock);
- cd_DriveCount = RegBlock.ebx;
-
- // MSCDEX not installed if number of drives = 0
- if(cd_DriveCount == 0)
- {
- cd_Error = CDERR_NOTINSTALLED;
- return -1;
- }
- cd_FirstDrive = RegBlock.ecx;
- cd_CurDrive = cd_FirstDrive;
-
- // Allocate the IOCTL buffers
- if(AllocIOCTLBuffers() == -1)
- {
- cd_Error = CDERR_IOCTLBUFFMEM;
- return -1;
- }
-
- // Get MSCDEX version
- // Major version in upper byte, minor version in lower byte
- memset(&RegBlock, 0, sizeof(RegBlock));
- RegBlock.eax = CDROM_GETVERSION;
- DPMI_SimRealInt(MULTIPLEX_INT, &RegBlock);
- cd_Version = RegBlock.ebx;
-
- // Check device status to make sure we can read Audio CD's
- InputIOCTL(DEVICESTATUS, cd_DevStatSeg);
- if((cd_DevStat->devParams & 0x0010) == 0)
- {
- cd_Error = CDERR_NOAUDIOSUPPORT;
- return -1;
- }
- }
-
- // Force audio to stop playing
- I_CDMusStop();
-
- // Make sure we have the current TOC
- InputIOCTL(MEDIACHANGED, cd_MedChngSeg);
-
- // Set track variables
- InputIOCTL(AUDIODISKINFO, cd_DiskInfoSeg);
- cd_FirstTrack = cd_DiskInfo->lowTrack;
- cd_LastTrack = cd_DiskInfo->highTrack;
- if(cd_FirstTrack == 0 && cd_FirstTrack == cd_LastTrack)
- {
- cd_Error = CDERR_NOAUDIOTRACKS;
- return -1;
- }
- cd_TrackCount = cd_LastTrack-cd_FirstTrack+1;
- cd_LeadOutMin = cd_DiskInfo->startLeadOut>>16 & 0xFF;
- cd_LeadOutSec = cd_DiskInfo->startLeadOut>>8 & 0xFF;
- cd_LeadOutRed = cd_DiskInfo->startLeadOut;
- cd_LeadOutSector = RedToSectors(cd_DiskInfo->startLeadOut);
-
- // Create Red Book start, sector start, and sector length
- // for all tracks
- sect = cd_LeadOutSector;
- for(i = cd_LastTrack; i >= cd_FirstTrack; i--)
- {
- cd_TrackInfo->track = i;
- InputIOCTL(AUDIOTRACKINFO, cd_TrackInfoSeg);
- if(i < MAX_AUDIO_TRACKS)
- {
- cd_AudioTracks[i].redStart = cd_TrackInfo->start;
- cd_AudioTracks[i].sectorStart =
- RedToSectors(cd_TrackInfo->start);
- cd_AudioTracks[i].sectorLength =
- sect-RedToSectors(cd_TrackInfo->start);
- }
- sect = RedToSectors(cd_TrackInfo->start);
- }
-
- // Create track lengths in minutes and seconds
- if(cd_LastTrack >= MAX_AUDIO_TRACKS)
- {
- maxTrack = MAX_AUDIO_TRACKS-1;
- }
- else
- {
- maxTrack = cd_LastTrack;
- }
- cd_TrackInfo->track = cd_FirstTrack;
- InputIOCTL(AUDIOTRACKINFO, cd_TrackInfoSeg);
- startMin1 = (cd_TrackInfo->start >> 16);
- startSec1 = (cd_TrackInfo->start >> 8);
- for(i = cd_FirstTrack; i <= maxTrack; i++)
- {
- cd_TrackInfo->track = i+1;
- if(i < cd_LastTrack)
- {
- InputIOCTL(AUDIOTRACKINFO, cd_TrackInfoSeg);
- startMin2 = (cd_TrackInfo->start >> 16);
- startSec2 = (cd_TrackInfo->start >> 8);
- }
- else
- {
- startMin2 = cd_LeadOutRed>>16;
- startSec2 = cd_LeadOutRed>>8;
- }
- lengthSec = startSec2 - startSec1;
- lengthMin = startMin2 - startMin1;
- if(lengthSec < 0)
- {
- lengthSec += 60;
- lengthMin--;
- }
- cd_AudioTracks[i].lengthMin = lengthMin;
- cd_AudioTracks[i].lengthSec = lengthSec;
- startMin1 = startMin2;
- startSec1 = startSec2;
- }
-
- // Clip high tracks
- cd_LastTrack = maxTrack;
-
- OkInit = 1;
- return 0;
-}
-
-//==========================================================================
-//
-// I_CDMusPlay
-//
-// Play an audio CD track.
-//
-// Returns: 0 (ok) or -1 (error, in cd_Error).
-//
-//==========================================================================
-
-int I_CDMusPlay(int track)
-{
- int start;
- int len;
-
- if(track < cd_FirstTrack || track > cd_LastTrack)
- {
- cd_Error = CDERR_BADTRACK;
- return(-1);
- }
- I_CDMusStop();
- start = cd_AudioTracks[track].redStart;
- len = cd_AudioTracks[track].sectorLength;
- cd_PlayReq->addressMode = RED_MODE;
- cd_PlayReq->startSector = start;
- cd_PlayReq->numberToRead = len;
- memset(&RegBlock, 0, sizeof(RegBlock));
- RegBlock.eax = CDROM_SENDDEVICEREQ;
- RegBlock.ecx = cd_CurDrive;
- RegBlock.ebx = 0;
- RegBlock.es = cd_PlayReqSeg;
- DPMI_SimRealInt(MULTIPLEX_INT, &RegBlock);
- if(cd_PlayReq->status&0x8000)
- {
- cd_Error = CDERR_DEVREQBASE+(cd_PlayReq->status)&0x00ff;
- return(-1);
- }
- return(0);
-}
-
-//==========================================================================
-//
-// I_CDMusStop
-//
-// Stops the playing of an audio CD.
-//
-// Returns: 0 (ok) or -1 (error, in cd_Error).
-//
-//==========================================================================
-
-int I_CDMusStop(void)
-{
- memset(&RegBlock, 0, sizeof(RegBlock));
- RegBlock.eax = CDROM_SENDDEVICEREQ;
- RegBlock.ecx = cd_CurDrive;
- RegBlock.ebx = 0;
- RegBlock.es = cd_StopReqSeg;
- DPMI_SimRealInt(MULTIPLEX_INT, &RegBlock);
- if(cd_StopReq->status&0x8000)
- {
- cd_Error = CDERR_DEVREQBASE+(cd_StopReq->status)&0x00ff;
- return -1;
- }
- return 0;
-}
-
-//==========================================================================
-//
-// I_CDMusResume
-//
-// Resumes the playing of an audio CD.
-//
-// Returns: 0 (ok) or -1 (error, in cd_Error).
-//
-//==========================================================================
-
-int I_CDMusResume(void)
-{
- memset(&RegBlock, 0, sizeof(RegBlock));
- RegBlock.eax = CDROM_SENDDEVICEREQ;
- RegBlock.ecx = cd_CurDrive;
- RegBlock.ebx = 0;
- RegBlock.es = cd_ResumeReqSeg;
- DPMI_SimRealInt(MULTIPLEX_INT, &RegBlock);
- if(cd_ResumeReq->status&0x8000)
- {
- cd_Error = CDERR_DEVREQBASE+(cd_ResumeReq->status)&0x00ff;
- return -1;
- }
- return 0;
-}
-
-//==========================================================================
-//
-// I_CDMusSetVolume
-//
-// Sets the CD audio volume (0 - 255).
-//
-// Returns: 0 (ok) or -1 (error, in cd_Error).
-//
-//==========================================================================
-
-int I_CDMusSetVolume(int volume)
-{
-
- if(!OkInit)
- {
- cd_Error = CDERR_NOTINSTALLED;
- return -1;
- }
-
- // Read current channel info
- InputIOCTL(AUDIOCHANINFO, cd_AudChanInfoSeg);
-
- // Change the volumes
- cd_AudChanInfo->volumeOut0 =
- cd_AudChanInfo->volumeOut1 =
- cd_AudChanInfo->volumeOut2 =
- cd_AudChanInfo->volumeOut3 = volume;
-
- // Write modified channel info
- OutputIOCTL(AUDIOCHANCONTROL, cd_AudChanInfoSeg);
-
- return 0;
-}
-
-//==========================================================================
-//
-// I_CDMusFirstTrack
-//
-// Returns: the number of the first track.
-//
-//==========================================================================
-
-int I_CDMusFirstTrack(void)
-{
- return cd_FirstTrack;
-}
-
-//==========================================================================
-//
-// I_CDMusLastTrack
-//
-// Returns: the number of the last track.
-//
-//==========================================================================
-
-int I_CDMusLastTrack(void)
-{
- return cd_LastTrack;
-}
-
-//==========================================================================
-//
-// I_CDMusTrackLength
-//
-// Returns: Length of the given track in seconds, or -1 (error, in
-// cd_Error).
-//
-//==========================================================================
-
-int I_CDMusTrackLength(int track)
-{
- if(track < cd_FirstTrack || track > cd_LastTrack)
- {
- cd_Error = CDERR_BADTRACK;
- return -1;
- }
- return cd_AudioTracks[track].lengthMin*60
- +cd_AudioTracks[track].lengthSec;
-}
-
-//==========================================================================
-//
-// AllocIOCTLBuffers
-//
-// Allocates conventional memory for the IOCTL input and output buffers.
-// Sets cd_IOCTLBufferTotal to the total allocated.
-//
-// Returns: 0 (ok) or -1 (error, in cd_Error).
-//
-//==========================================================================
-
-static int AllocIOCTLBuffers(void)
-{
- int i;
- int size;
- DOSChunk_t *ck;
-
- cd_IOCTLBufferTotal = 0;
- for(i = 0; DOSChunks[i].size != 0; i++)
- {
- ck = &DOSChunks[i];
- size = ck->size;
- cd_IOCTLBufferTotal += (size+15)&0xfffffff0;
- *ck->address = DPMI_AllocRealMem(size, ck->segment, ck->selector);
- if(*ck->address == NULL)
- {
- return -1;
- }
- memset(*ck->address, 0, size);
- }
- cd_IOCTLIn->headerSize = sizeof(struct IOCTLIn_s);
- cd_IOCTLIn->command = DRC_IOCTLINPUT;
- cd_IOCTLOut->headerSize = sizeof(struct IOCTLOut_s);
- cd_IOCTLOut->command = DRC_IOCTLOUTPUT;
- cd_PlayReq->headerSize = sizeof(struct PlayReq_s);
- cd_PlayReq->command = DRC_PLAYAUDIO;
- cd_StopReq->headerSize = sizeof(struct StopReq_s);
- cd_StopReq->command = DRC_STOPAUDIO;
- cd_ResumeReq->headerSize = sizeof(struct ResumeReq_s);
- cd_ResumeReq->command = DRC_RESUMEAUDIO;
- return 0;
-}
-
-//==========================================================================
-//
-// InputIOCTL
-//
-// Sends an IOCTL input device request command.
-//
-// Returns: the status of the request.
-//
-//==========================================================================
-
-static U_WORD InputIOCTL(S_LONG request, U_WORD buffSeg)
-{
- U_BYTE *code;
-
- code = (U_BYTE *)(buffSeg<<4);
- *code = (U_BYTE)request;
- cd_IOCTLIn->ctrlBlkAddr = buffSeg<<16;
- cd_IOCTLIn->tranSize = InCtrlBlkSize[request];
- memset(&RegBlock, 0, sizeof(RegBlock));
- RegBlock.eax = CDROM_SENDDEVICEREQ;
- RegBlock.ecx = cd_CurDrive;
- RegBlock.ebx = 0;
- RegBlock.es = cd_IOCTLInSeg;
- DPMI_SimRealInt(MULTIPLEX_INT, &RegBlock);
- return cd_IOCTLIn->status;
-}
-
-//==========================================================================
-//
-// OutputIOCTL
-//
-// Sends an IOCTL output device request command.
-//
-// Returns: the status of the request.
-//
-//==========================================================================
-
-static U_WORD OutputIOCTL(S_LONG request, U_WORD buffSeg)
-{
- U_BYTE *code;
-
- code = (U_BYTE *)(buffSeg<<4);
- *code = (U_BYTE)request;
- cd_IOCTLOut->ctrlBlkAddr = buffSeg<<16;
- cd_IOCTLOut->tranSize = OutCtrlBlkSize[request];
- RegBlock.eax = CDROM_SENDDEVICEREQ;
- RegBlock.ecx = cd_CurDrive;
- RegBlock.ebx = 0;
- RegBlock.es = cd_IOCTLOutSeg;
- DPMI_SimRealInt(MULTIPLEX_INT, &RegBlock);
- return cd_IOCTLOut->status;
-}
-
-//==========================================================================
-//
-// RedToSectors
-//
-// Converts Red Book addresses to HSG sectors.
-// Sectors = Minutes * 60 * 75 + Seconds * 75 + Frame - 150
-//
-// Returns: HSG sectors.
-//
-//==========================================================================
-
-static U_LONG RedToSectors(U_LONG red)
-{
- U_LONG sector;
-
- sector = ((red&0x00ff0000) >> 16) * 60 * 75;
- sector += ((red&0x0000ff00) >> 8) * 75;
- sector += (red&0x000000ff);
- return sector-150;
-}
-
-//==========================================================================
-//
-// DPMI_SimRealInt
-//
-//==========================================================================
-
-static void DPMI_SimRealInt(U_LONG intr, RegBlock_t *rBlock)
-{
- union REGS regs;
- struct SREGS sRegs;
-
- regs.x.eax = DPMI_SIMREALINT;
- regs.x.ebx = intr;
- regs.x.ecx = 0;
- regs.x.edi = FP_OFF((void far *)rBlock);
- sRegs.es = FP_SEG((void far *)rBlock);
- sRegs.ds = FP_SEG((void far *)rBlock);
- int386x(DPMI_INT, &regs, &regs, &sRegs);
-}
-
-//==========================================================================
-//
-// DPMI_AllocRealMem
-//
-//==========================================================================
-
-static void *DPMI_AllocRealMem(U_LONG size, U_WORD *segment,
- U_WORD *selector)
-{
- union REGS inRegs;
- union REGS outRegs;
-
- inRegs.x.eax = DPMI_ALLOCREALMEM;
- inRegs.x.ebx = (size+15)/16;
- int386(DPMI_INT, &inRegs, &outRegs);
- if(outRegs.x.cflag)
- {
- return NULL;
- }
- *segment = outRegs.x.eax&0xffff;
- *selector = outRegs.x.edx&0xffff;
- return (void *)(outRegs.x.eax<<4);
-}
-
-//==========================================================================
-//
-// DPMI_FreeRealMem
-//
-//==========================================================================
-
-static void DPMI_FreeRealMem(U_WORD selector)
-{
- union REGS regs;
-
- regs.x.eax = DPMI_FREEREALMEM;
- regs.x.edx = selector;
- int386(DPMI_INT, &regs, &regs);
-}
+// Emacs style mode select -*- C++ -*-
+//-----------------------------------------------------------------------------
+//
+// Copyright(C) 1993-1996 Id Software, Inc.
+// Copyright(C) 1993-2008 Raven Software
+//
+// 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 FILES ------------------------------------------------------------
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <dos.h>
+#include <stddef.h>
+#include <string.h>
+#include "h2def.h"
+#include "i_sound.h"
+
+// MACROS ------------------------------------------------------------------
+
+#define MAX_AUDIO_TRACKS 25
+#define MULTIPLEX_INT 0x2f
+#define CDROM_GETDRIVECOUNT 0x1500
+#define CDROM_SENDDEVICEREQ 0x1510
+#define CDROM_GETVERSION 0x150c
+#define HSG_MODE 0
+#define RED_MODE 1
+#define DRC_IOCTLINPUT 0x03
+#define DRC_IOCTLOUTPUT 0x0c
+#define DRC_PLAYAUDIO 0x84
+#define DRC_STOPAUDIO 0x85
+#define DRC_RESUMEAUDIO 0x88
+
+#define DPMI_INT 0x31
+#define DPMI_ALLOCREALMEM 0x0100
+#define DPMI_FREEREALMEM 0x0101
+#define DPMI_SIMREALINT 0x0300
+
+// IOCTL input commands
+
+#define ADRDEVHEAD 0 // Return Address of Device Header
+#define HEADLOCATION 1 // Location of Head
+#define RESERVED 2 // Reserved
+#define ERRSTATISTICS 3 // Error Statistics
+#define AUDIOCHANINFO 4 // Audio Channel Info
+#define READDRVBYTES 5 // Read Drive Bytes
+#define DEVICESTATUS 6 // Device Status
+#define GETSECTORSIZE 7 // Return Sector Size
+#define GETVOLSIZE 8 // Return Volume Size
+#define MEDIACHANGED 9 // Media Changed
+#define AUDIODISKINFO 10 // Audio Disk Info
+#define AUDIOTRACKINFO 11 // Audio Track Info
+#define AUDIOQCHANINFO 12 // Audio Q-Channel Info
+#define AUDIOSUBINFO 13 // Audio Sub-Channel Info
+#define UPCCODE 14 // UPC Code
+#define AUDIOSTATUSINFO 15 // Audio Status Info
+
+// IOCTL output commands
+
+#define EJECTDISK 0 // Eject Disk
+#define DOORLOCK 1 // Lock/Unlock Door
+#define RESETDRIVE 2 // Reset Drive
+#define AUDIOCHANCONTROL 3 // Audio Channel Control
+#define WRITEDEVCONTROL 4 // Write Device Control String
+#define CLOSETRAY 5 // Close Tray
+
+// TYPES -------------------------------------------------------------------
+
+typedef signed char S_BYTE;
+typedef unsigned char U_BYTE;
+typedef signed short S_WORD;
+typedef unsigned short U_WORD;
+typedef signed int S_LONG;
+typedef unsigned int U_LONG;
+
+typedef struct
+{
+ U_LONG size;
+ void **address;
+ U_WORD *segment;
+ U_WORD *selector;
+} DOSChunk_t;
+
+typedef struct
+{
+ U_LONG edi;
+ U_LONG esi;
+ U_LONG ebp;
+ U_LONG reserved;
+ U_LONG ebx;
+ U_LONG edx;
+ U_LONG ecx;
+ U_LONG eax;
+ U_WORD flags;
+ U_WORD es;
+ U_WORD ds;
+ U_WORD fs;
+ U_WORD gs;
+ U_WORD ip;
+ U_WORD cs;
+ U_WORD sp;
+ U_WORD ss;
+} RegBlock_t;
+
+typedef struct
+{
+ short lengthMin;
+ short lengthSec;
+ int redStart;
+ int sectorStart;
+ int sectorLength;
+} AudioTrack_t;
+
+// EXTERNAL FUNCTION PROTOTYPES --------------------------------------------
+
+// PUBLIC FUNCTION PROTOTYPES ----------------------------------------------
+
+// PRIVATE FUNCTION PROTOTYPES ---------------------------------------------
+
+static U_WORD InputIOCTL(S_WORD request, U_LONG pctrlblk);
+static U_WORD OutputIOCTL(S_WORD request, U_LONG pctrlblk);
+static U_LONG RedToSectors(U_LONG red);
+static int AllocIOCTLBuffers(void);
+static void DPMI_SimRealInt(U_LONG intr, RegBlock_t * rBlock);
+static void *DPMI_AllocRealMem(U_LONG size, U_WORD * segment,
+ U_WORD * selector);
+static void DPMI_FreeRealMem(U_WORD selector);
+
+// EXTERNAL DATA DECLARATIONS ----------------------------------------------
+
+// PUBLIC DATA DEFINITIONS -------------------------------------------------
+
+int cd_Error;
+
+// PRIVATE DATA DEFINITIONS ------------------------------------------------
+
+static int cd_DriveCount;
+static int cd_FirstDrive;
+static int cd_CurDrive;
+static U_WORD cd_Version;
+static int cd_FirstTrack;
+static int cd_LastTrack;
+static int cd_TrackCount;
+static U_WORD cd_LeadOutMin;
+static U_WORD cd_LeadOutSec;
+static U_LONG cd_LeadOutRed;
+static U_LONG cd_LeadOutSector;
+static U_LONG cd_IOCTLBufferTotal;
+static AudioTrack_t cd_AudioTracks[MAX_AUDIO_TRACKS];
+
+static int OkInit = 0;
+
+static RegBlock_t RegBlock;
+
+static struct PlayReq_s
+{ // CD-ROM Play Audio Device Request Struct
+ U_BYTE headerSize;
+ U_BYTE subUnitCode;
+ U_BYTE command; // = DRC_PLAYAUDIO
+ U_WORD status;
+ U_BYTE reserved[8];
+ U_BYTE addressMode;
+ U_LONG startSector;
+ U_LONG numberToRead;
+} *cd_PlayReq;
+static U_WORD cd_PlayReqSeg;
+static U_WORD cd_PlayReqSel;
+
+static struct StopReq_s
+{ // CD-ROM Stop Audio Device Request Struct
+ U_BYTE headerSize;
+ U_BYTE subUnitCode;
+ U_BYTE command; // = DRC_STOPAUDIO
+ U_WORD status;
+ U_BYTE reserved[8];
+} *cd_StopReq;
+static U_WORD cd_StopReqSeg;
+static U_WORD cd_StopReqSel;
+
+static struct ResumeReq_s
+{ // CD-ROM Resume Audio Device Request Struct
+ U_BYTE headerSize;
+ U_BYTE subUnitCode;
+ U_BYTE command; // = DRC_RESUMEAUDIO
+ U_WORD status;
+ U_BYTE reserved[8];
+} *cd_ResumeReq;
+static U_WORD cd_ResumeReqSeg;
+static U_WORD cd_ResumeReqSel;
+
+// IOCTL Input command data buffer structures
+
+static struct IOCTLIn_s
+{ // IOCTL Input Struct
+ U_BYTE headerSize;
+ U_BYTE subUnitCode;
+ U_BYTE command; // = DRC_IOCTLINPUT
+ U_WORD status;
+ U_BYTE reserved[8];
+ U_BYTE mediaDescriptor;
+ U_LONG ctrlBlkAddr;
+ U_WORD tranSize;
+ U_WORD startSector;
+ U_LONG volPtr;
+} *cd_IOCTLIn;
+static U_WORD cd_IOCTLInSeg;
+static U_WORD cd_IOCTLInSel;
+
+static struct RAddrDevHead_s
+{
+ U_BYTE code; // ADRDEVHEAD
+ U_LONG devHdrAddr; // Address of device header
+} *cd_RAddrDevHead;
+static U_WORD cd_RAddrDevHeadSeg;
+static U_WORD cd_RAddrDevHeadSel;
+
+static struct LocHead_s
+{
+ U_BYTE code; // HEADLOCATION
+ U_BYTE addrMode; // Addressing mode
+ U_LONG headLocation; // Location of drive head
+} *cd_LocHead;
+static U_WORD cd_LocHeadSeg;
+static U_WORD cd_LocHeadSel;
+
+static struct ErrStat_s
+{
+ U_BYTE code; // ERRSTATISTICS
+ U_BYTE errVal; // Error statistics
+} *cd_ErrStat;
+static U_WORD cd_ErrStatSeg;
+static U_WORD cd_ErrStatSel;
+
+static struct AudChanInfo_s
+{
+ U_BYTE code; // AUDIOCHANINFO
+ U_BYTE inChanOut0; // Input chan(0,1,2,or 3) for output chan 0
+ U_BYTE volumeOut0; // Volume control (0-0xff) for output chan 0
+ U_BYTE inChanOut1; // Input chan(0,1,2,or 3) for output chan 1
+ U_BYTE volumeOut1; // Volume control (0-0xff) for output chan 1
+ U_BYTE inChanOut2; // Input chan(0,1,2,or 3) for output chan 2
+ U_BYTE volumeOut2; // Volume control (0-0xff) for output chan 2
+ U_BYTE inChanOut3; // Input chan(0,1,2,or 3) for output chan 3
+ U_BYTE volumeOut3; // Volume control (0-0xff) for output chan 3
+} *cd_AudChanInfo;
+static U_WORD cd_AudChanInfoSeg;
+static U_WORD cd_AudChanInfoSel;
+
+static struct RDrvBytes_s
+{
+ U_BYTE code; // READDRVBYTES
+ U_BYTE numBytes; // Number of bytes to read
+ U_BYTE rBuffer[128]; // Read buffer
+} *cd_RDrvBytes;
+static U_WORD cd_RDrvBytesSeg;
+static U_WORD cd_RDrvBytesSel;
+
+static struct DevStat_s
+{
+ U_BYTE code; // DEVICESTATUS
+ U_LONG devParams; // Device parameters
+} *cd_DevStat;
+static U_WORD cd_DevStatSeg;
+static U_WORD cd_DevStatSel;
+
+static struct SectSize_s
+{
+ U_BYTE code; // GETSECTORSIZE
+ U_BYTE readMode; // Read mode
+ U_WORD sectorSize; // Sector size
+} *cd_SectSize;
+static U_WORD cd_SectSizeSeg;
+static U_WORD cd_SectSizeSel;
+
+static struct VolSize_s
+{
+ U_BYTE code; // GETVOLSIZE
+ U_LONG volumeSize; // Volume size
+} *cd_VolSize;
+static U_WORD cd_VolSizeSeg;
+static U_WORD cd_VolSizeSel;
+
+static struct MedChng_s
+{
+ U_BYTE code; // MEDIACHANGED
+ U_BYTE changed; // Media byte
+} *cd_MedChng;
+static U_WORD cd_MedChngSeg;
+static U_WORD cd_MedChngSel;
+
+static struct DiskInfo_s
+{
+ U_BYTE code; // AUDIODISKINFO
+ U_BYTE lowTrack; // Lowest track number
+ U_BYTE highTrack; // Highest track number
+ U_LONG startLeadOut; // Starting point of the lead-out track
+} *cd_DiskInfo;
+static U_WORD cd_DiskInfoSeg;
+static U_WORD cd_DiskInfoSel;
+
+static struct TrackInfo_s
+{
+ U_BYTE code; // AUDIOTRACKINFO
+ U_BYTE track; // Track number
+ U_LONG start; // Starting point of the track
+ U_BYTE ctrlInfo; // Track control information
+} *cd_TrackInfo;
+static U_WORD cd_TrackInfoSeg;
+static U_WORD cd_TrackInfoSel;
+
+static struct QInfo_s
+{
+ U_BYTE code; // AUDIOQCHANINFO
+ U_BYTE control; // CONTROL and ADR byte
+ U_BYTE tno; // Track number (TNO)
+ U_BYTE index; // (POINT) or Index(X)
+ U_BYTE min; // (MIN) Running time within a track
+ U_BYTE sec; // (SEC) " " " " "
+ U_BYTE frame; // (FRAME) " " " " "
+ U_BYTE zero; // (ZERO) " " " " "
+ U_BYTE aMin; // (AMIN) or (PMIN) Running time on disk
+ U_BYTE aSec; // (ASEC) or (PSEC) " " " "
+ U_BYTE aFrame; // (AFRAME) or (PFRAME)" " " "
+} *cd_QInfo;
+static U_WORD cd_QInfoSeg;
+static U_WORD cd_QInfoSel;
+
+static struct SubChanInfo_s
+{
+ U_BYTE code; // AUDIOSUBINFO
+ U_LONG startSectAddr; // Starting sector address
+ U_LONG transAddr; // Transfer address
+ U_LONG numSects; // Number of sectors to read
+} *cd_SubChanInfo;
+static U_WORD cd_SubChanInfoSeg;
+static U_WORD cd_SubChanInfoSel;
+
+static struct UPCCode_s
+{
+ U_BYTE code; // UPCCODE
+ U_BYTE control; // CONTROL and ADR byte
+ U_BYTE upc[7]; // UPC/EAN code
+ U_BYTE zero; // Zero
+ U_BYTE aFrame; // Aframe
+} *cd_UPCCode;
+static U_WORD cd_UPCCodeSeg;
+static U_WORD cd_UPCCodeSel;
+
+static struct AudStat_s
+{
+ U_BYTE code; // AUDIOSTATUSINFO
+ U_WORD status; // Audio status bits
+ U_LONG startPlay; // Starting location of last Play/Resume
+ U_LONG endPlay; // Ending location for last Play/Resume
+} *cd_AudStat;
+static U_WORD cd_AudStatSeg;
+static U_WORD cd_AudStatSel;
+
+// IOCTL Output command data buffer structures
+
+static struct IOCTLOut_s
+{ // IOCTL Output struct
+ U_BYTE headerSize;
+ U_BYTE subUnitCode;
+ U_BYTE command; // = DRC_IOCTLOUTPUT
+ U_WORD status;
+ U_BYTE reserved[8];
+ U_BYTE mediaDescriptor;
+ U_LONG ctrlBlkAddr;
+ U_WORD tranSize;
+ U_WORD startSector;
+ U_LONG volPtr;
+} *cd_IOCTLOut;
+static U_WORD cd_IOCTLOutSeg;
+static U_WORD cd_IOCTLOutSel;
+
+static struct Eject_s
+{
+ U_BYTE code; // EJECTDISK
+} *cd_Eject;
+static U_WORD cd_EjectSeg;
+static U_WORD cd_EjectSel;
+
+static struct LockDoor_s
+{
+ U_BYTE code; // DOORLOCK
+ U_BYTE lock; // Lock function : 0 = unlock, 1 = lock
+} *cd_LockDoor;
+static U_WORD cd_LockDoorSeg;
+static U_WORD cd_LockDoorSel;
+
+static struct ResetDrv_s
+{
+ U_BYTE code; // RESETDRIVE
+} *cd_ResetDrv;
+static U_WORD cd_ResetDrvSeg;
+static U_WORD cd_ResetDrvSel;
+
+static struct AudInfo_s
+{
+ U_BYTE code; // AUDIOCHANCONTROL
+ U_BYTE inChanOut0; // Input chan(0,1,2,or 3) for output chan 0
+ U_BYTE volumeOut0; // Volume control (0-0xff) for output chan 0
+ U_BYTE inChanOut1; // Input chan(0,1,2,or 3) for output chan 1
+ U_BYTE volumeOut1; // Volume control (0-0xff) for output chan 1
+ U_BYTE inChanOut2; // Input chan(0,1,2,or 3) for output chan 2
+ U_BYTE volumeOut2; // Volume control (0-0xff) for output chan 2
+ U_BYTE inChanOut3; // Input chan(0,1,2,or 3) for output chan 3
+ U_BYTE volumeOut3; // Volume control (0-0xff) for output chan 3
+} *cd_AudInfo;
+static U_WORD cd_AudInfoSeg;
+static U_WORD cd_AudInfoSel;
+
+static struct WDrvBytes_s
+{
+ U_BYTE code; // WRITEDEVCONTROL
+ U_BYTE buf[5]; // Write buffer - size ??
+} *cd_WDrvBytes;
+static U_WORD cd_WDrvBytesSeg;
+static U_WORD cd_WDrvBytesSel;
+
+static struct CloseTray_s
+{
+ U_BYTE code; // CLOSETRAY
+} *cd_CloseTray;
+static U_WORD cd_CloseTraySeg;
+static U_WORD cd_CloseTraySel;
+
+static U_WORD InCtrlBlkSize[16] = {
+ 0x05, 0x06, 0x00, 0x00,
+ 0x09, 0x82, 0x05, 0x04,
+ 0x05, 0x02, 0x07, 0x07,
+ 0x0b, 0x0d, 0x0b, 0x0b
+};
+
+static U_WORD OutCtrlBlkSize[6] = {
+ 0x01, 0x02,
+ 0x01, 0x09,
+ 0x06, 0x01
+};
+
+// Structures for allocating conventional memory
+
+static DOSChunk_t DOSChunks[] = {
+ {
+ sizeof(struct PlayReq_s),
+ &cd_PlayReq, &cd_PlayReqSeg, &cd_PlayReqSel},
+ {
+ sizeof(struct StopReq_s),
+ &cd_StopReq, &cd_StopReqSeg, &cd_StopReqSel},
+ {
+ sizeof(struct ResumeReq_s),
+ &cd_ResumeReq, &cd_ResumeReqSeg, &cd_ResumeReqSel},
+ {
+ sizeof(struct IOCTLOut_s),
+ &cd_IOCTLOut, &cd_IOCTLOutSeg, &cd_IOCTLOutSel},
+ {
+ sizeof(struct Eject_s),
+ &cd_Eject, &cd_EjectSeg, &cd_EjectSel},
+ {
+ sizeof(struct LockDoor_s),
+ &cd_LockDoor, &cd_LockDoorSeg, &cd_LockDoorSel},
+ {
+ sizeof(struct ResetDrv_s),
+ &cd_ResetDrv, &cd_ResetDrvSeg, &cd_ResetDrvSel},
+ {
+ sizeof(struct AudInfo_s),
+ &cd_AudInfo, &cd_AudInfoSeg, &cd_AudInfoSel},
+ {
+ sizeof(struct WDrvBytes_s),
+ &cd_WDrvBytes, &cd_WDrvBytesSeg, &cd_WDrvBytesSel},
+ {
+ sizeof(struct CloseTray_s),
+ &cd_CloseTray, &cd_CloseTraySeg, &cd_CloseTraySel},
+ {
+ sizeof(struct IOCTLIn_s),
+ &cd_IOCTLIn, &cd_IOCTLInSeg, &cd_IOCTLInSel},
+ {
+ sizeof(struct RAddrDevHead_s),
+ &cd_RAddrDevHead, &cd_RAddrDevHeadSeg, &cd_RAddrDevHeadSel},
+ {
+ sizeof(struct LocHead_s),
+ &cd_LocHead, &cd_LocHeadSeg, &cd_LocHeadSel},
+ {
+ sizeof(struct ErrStat_s),
+ &cd_ErrStat, &cd_ErrStatSeg, &cd_ErrStatSel},
+ {
+ sizeof(struct AudChanInfo_s),
+ &cd_AudChanInfo, &cd_AudChanInfoSeg, &cd_AudChanInfoSel},
+ {
+ sizeof(struct RDrvBytes_s),
+ &cd_RDrvBytes, &cd_RDrvBytesSeg, &cd_RDrvBytesSel},
+ {
+ sizeof(struct DevStat_s),
+ &cd_DevStat, &cd_DevStatSeg, &cd_DevStatSel},
+ {
+ sizeof(struct SectSize_s),
+ &cd_SectSize, &cd_SectSizeSeg, &cd_SectSizeSel},
+ {
+ sizeof(struct VolSize_s),
+ &cd_VolSize, &cd_VolSizeSeg, &cd_VolSizeSel},
+ {
+ sizeof(struct MedChng_s),
+ &cd_MedChng, &cd_MedChngSeg, &cd_MedChngSel},
+ {
+ sizeof(struct DiskInfo_s),
+ &cd_DiskInfo, &cd_DiskInfoSeg, &cd_DiskInfoSel},
+ {
+ sizeof(struct TrackInfo_s),
+ &cd_TrackInfo, &cd_TrackInfoSeg, &cd_TrackInfoSel},
+ {
+ sizeof(struct QInfo_s),
+ &cd_QInfo, &cd_QInfoSeg, &cd_QInfoSel},
+ {
+ sizeof(struct SubChanInfo_s),
+ &cd_SubChanInfo, &cd_SubChanInfoSeg, &cd_SubChanInfoSel},
+ {
+ sizeof(struct UPCCode_s),
+ &cd_UPCCode, &cd_UPCCodeSeg, &cd_UPCCodeSel},
+ {
+ sizeof(struct AudStat_s),
+ &cd_AudStat, &cd_AudStatSeg, &cd_AudStatSel},
+ {
+ 0, NULL, NULL, NULL}
+};
+
+// CODE --------------------------------------------------------------------
+
+//==========================================================================
+//
+// I_CDMusInit
+//
+// Initializes the CD audio system. Must be called before using any
+// other I_CDMus functions.
+//
+// Returns: 0 (ok) or -1 (error, in cd_Error).
+//
+//==========================================================================
+
+int I_CDMusInit(void)
+{
+ int i;
+ int sect;
+ int maxTrack;
+ S_BYTE startMin1 = 0;
+ S_BYTE startSec1 = 0;
+ S_BYTE startMin2 = 0;
+ S_BYTE startSec2 = 0;
+ S_BYTE lengthMin = 0;
+ S_BYTE lengthSec = 0;
+
+ if (OkInit != 1)
+ { // Only execute if uninitialized
+
+ // Get number of CD-ROM drives and first drive
+ memset(&RegBlock, 0, sizeof(RegBlock));
+ RegBlock.eax = CDROM_GETDRIVECOUNT;
+ RegBlock.ebx = 0;
+ DPMI_SimRealInt(MULTIPLEX_INT, &RegBlock);
+ cd_DriveCount = RegBlock.ebx;
+
+ // MSCDEX not installed if number of drives = 0
+ if (cd_DriveCount == 0)
+ {
+ cd_Error = CDERR_NOTINSTALLED;
+ return -1;
+ }
+ cd_FirstDrive = RegBlock.ecx;
+ cd_CurDrive = cd_FirstDrive;
+
+ // Allocate the IOCTL buffers
+ if (AllocIOCTLBuffers() == -1)
+ {
+ cd_Error = CDERR_IOCTLBUFFMEM;
+ return -1;
+ }
+
+ // Get MSCDEX version
+ // Major version in upper byte, minor version in lower byte
+ memset(&RegBlock, 0, sizeof(RegBlock));
+ RegBlock.eax = CDROM_GETVERSION;
+ DPMI_SimRealInt(MULTIPLEX_INT, &RegBlock);
+ cd_Version = RegBlock.ebx;
+
+ // Check device status to make sure we can read Audio CD's
+ InputIOCTL(DEVICESTATUS, cd_DevStatSeg);
+ if ((cd_DevStat->devParams & 0x0010) == 0)
+ {
+ cd_Error = CDERR_NOAUDIOSUPPORT;
+ return -1;
+ }
+ }
+
+ // Force audio to stop playing
+ I_CDMusStop();
+
+ // Make sure we have the current TOC
+ InputIOCTL(MEDIACHANGED, cd_MedChngSeg);
+
+ // Set track variables
+ InputIOCTL(AUDIODISKINFO, cd_DiskInfoSeg);
+ cd_FirstTrack = cd_DiskInfo->lowTrack;
+ cd_LastTrack = cd_DiskInfo->highTrack;
+ if (cd_FirstTrack == 0 && cd_FirstTrack == cd_LastTrack)
+ {
+ cd_Error = CDERR_NOAUDIOTRACKS;
+ return -1;
+ }
+ cd_TrackCount = cd_LastTrack - cd_FirstTrack + 1;
+ cd_LeadOutMin = cd_DiskInfo->startLeadOut >> 16 & 0xFF;
+ cd_LeadOutSec = cd_DiskInfo->startLeadOut >> 8 & 0xFF;
+ cd_LeadOutRed = cd_DiskInfo->startLeadOut;
+ cd_LeadOutSector = RedToSectors(cd_DiskInfo->startLeadOut);
+
+ // Create Red Book start, sector start, and sector length
+ // for all tracks
+ sect = cd_LeadOutSector;
+ for (i = cd_LastTrack; i >= cd_FirstTrack; i--)
+ {
+ cd_TrackInfo->track = i;
+ InputIOCTL(AUDIOTRACKINFO, cd_TrackInfoSeg);
+ if (i < MAX_AUDIO_TRACKS)
+ {
+ cd_AudioTracks[i].redStart = cd_TrackInfo->start;
+ cd_AudioTracks[i].sectorStart = RedToSectors(cd_TrackInfo->start);
+ cd_AudioTracks[i].sectorLength =
+ sect - RedToSectors(cd_TrackInfo->start);
+ }
+ sect = RedToSectors(cd_TrackInfo->start);
+ }
+
+ // Create track lengths in minutes and seconds
+ if (cd_LastTrack >= MAX_AUDIO_TRACKS)
+ {
+ maxTrack = MAX_AUDIO_TRACKS - 1;
+ }
+ else
+ {
+ maxTrack = cd_LastTrack;
+ }
+ cd_TrackInfo->track = cd_FirstTrack;
+ InputIOCTL(AUDIOTRACKINFO, cd_TrackInfoSeg);
+ startMin1 = (cd_TrackInfo->start >> 16);
+ startSec1 = (cd_TrackInfo->start >> 8);
+ for (i = cd_FirstTrack; i <= maxTrack; i++)
+ {
+ cd_TrackInfo->track = i + 1;
+ if (i < cd_LastTrack)
+ {
+ InputIOCTL(AUDIOTRACKINFO, cd_TrackInfoSeg);
+ startMin2 = (cd_TrackInfo->start >> 16);
+ startSec2 = (cd_TrackInfo->start >> 8);
+ }
+ else
+ {
+ startMin2 = cd_LeadOutRed >> 16;
+ startSec2 = cd_LeadOutRed >> 8;
+ }
+ lengthSec = startSec2 - startSec1;
+ lengthMin = startMin2 - startMin1;
+ if (lengthSec < 0)
+ {
+ lengthSec += 60;
+ lengthMin--;
+ }
+ cd_AudioTracks[i].lengthMin = lengthMin;
+ cd_AudioTracks[i].lengthSec = lengthSec;
+ startMin1 = startMin2;
+ startSec1 = startSec2;
+ }
+
+ // Clip high tracks
+ cd_LastTrack = maxTrack;
+
+ OkInit = 1;
+ return 0;
+}
+
+//==========================================================================
+//
+// I_CDMusPlay
+//
+// Play an audio CD track.
+//
+// Returns: 0 (ok) or -1 (error, in cd_Error).
+//
+//==========================================================================
+
+int I_CDMusPlay(int track)
+{
+ int start;
+ int len;
+
+ if (track < cd_FirstTrack || track > cd_LastTrack)
+ {
+ cd_Error = CDERR_BADTRACK;
+ return (-1);
+ }
+ I_CDMusStop();
+ start = cd_AudioTracks[track].redStart;
+ len = cd_AudioTracks[track].sectorLength;
+ cd_PlayReq->addressMode = RED_MODE;
+ cd_PlayReq->startSector = start;
+ cd_PlayReq->numberToRead = len;
+ memset(&RegBlock, 0, sizeof(RegBlock));
+ RegBlock.eax = CDROM_SENDDEVICEREQ;
+ RegBlock.ecx = cd_CurDrive;
+ RegBlock.ebx = 0;
+ RegBlock.es = cd_PlayReqSeg;
+ DPMI_SimRealInt(MULTIPLEX_INT, &RegBlock);
+ if (cd_PlayReq->status & 0x8000)
+ {
+ cd_Error = CDERR_DEVREQBASE + (cd_PlayReq->status) & 0x00ff;
+ return (-1);
+ }
+ return (0);
+}
+
+//==========================================================================
+//
+// I_CDMusStop
+//
+// Stops the playing of an audio CD.
+//
+// Returns: 0 (ok) or -1 (error, in cd_Error).
+//
+//==========================================================================
+
+int I_CDMusStop(void)
+{
+ memset(&RegBlock, 0, sizeof(RegBlock));
+ RegBlock.eax = CDROM_SENDDEVICEREQ;
+ RegBlock.ecx = cd_CurDrive;
+ RegBlock.ebx = 0;
+ RegBlock.es = cd_StopReqSeg;
+ DPMI_SimRealInt(MULTIPLEX_INT, &RegBlock);
+ if (cd_StopReq->status & 0x8000)
+ {
+ cd_Error = CDERR_DEVREQBASE + (cd_StopReq->status) & 0x00ff;
+ return -1;
+ }
+ return 0;
+}
+
+//==========================================================================
+//
+// I_CDMusResume
+//
+// Resumes the playing of an audio CD.
+//
+// Returns: 0 (ok) or -1 (error, in cd_Error).
+//
+//==========================================================================
+
+int I_CDMusResume(void)
+{
+ memset(&RegBlock, 0, sizeof(RegBlock));
+ RegBlock.eax = CDROM_SENDDEVICEREQ;
+ RegBlock.ecx = cd_CurDrive;
+ RegBlock.ebx = 0;
+ RegBlock.es = cd_ResumeReqSeg;
+ DPMI_SimRealInt(MULTIPLEX_INT, &RegBlock);
+ if (cd_ResumeReq->status & 0x8000)
+ {
+ cd_Error = CDERR_DEVREQBASE + (cd_ResumeReq->status) & 0x00ff;
+ return -1;
+ }
+ return 0;
+}
+
+//==========================================================================
+//
+// I_CDMusSetVolume
+//
+// Sets the CD audio volume (0 - 255).
+//
+// Returns: 0 (ok) or -1 (error, in cd_Error).
+//
+//==========================================================================
+
+int I_CDMusSetVolume(int volume)
+{
+
+ if (!OkInit)
+ {
+ cd_Error = CDERR_NOTINSTALLED;
+ return -1;
+ }
+
+ // Read current channel info
+ InputIOCTL(AUDIOCHANINFO, cd_AudChanInfoSeg);
+
+ // Change the volumes
+ cd_AudChanInfo->volumeOut0 =
+ cd_AudChanInfo->volumeOut1 =
+ cd_AudChanInfo->volumeOut2 = cd_AudChanInfo->volumeOut3 = volume;
+
+ // Write modified channel info
+ OutputIOCTL(AUDIOCHANCONTROL, cd_AudChanInfoSeg);
+
+ return 0;
+}
+
+//==========================================================================
+//
+// I_CDMusFirstTrack
+//
+// Returns: the number of the first track.
+//
+//==========================================================================
+
+int I_CDMusFirstTrack(void)
+{
+ return cd_FirstTrack;
+}
+
+//==========================================================================
+//
+// I_CDMusLastTrack
+//
+// Returns: the number of the last track.
+//
+//==========================================================================
+
+int I_CDMusLastTrack(void)
+{
+ return cd_LastTrack;
+}
+
+//==========================================================================
+//
+// I_CDMusTrackLength
+//
+// Returns: Length of the given track in seconds, or -1 (error, in
+// cd_Error).
+//
+//==========================================================================
+
+int I_CDMusTrackLength(int track)
+{
+ if (track < cd_FirstTrack || track > cd_LastTrack)
+ {
+ cd_Error = CDERR_BADTRACK;
+ return -1;
+ }
+ return cd_AudioTracks[track].lengthMin * 60
+ + cd_AudioTracks[track].lengthSec;
+}
+
+//==========================================================================
+//
+// AllocIOCTLBuffers
+//
+// Allocates conventional memory for the IOCTL input and output buffers.
+// Sets cd_IOCTLBufferTotal to the total allocated.
+//
+// Returns: 0 (ok) or -1 (error, in cd_Error).
+//
+//==========================================================================
+
+static int AllocIOCTLBuffers(void)
+{
+ int i;
+ int size;
+ DOSChunk_t *ck;
+
+ cd_IOCTLBufferTotal = 0;
+ for (i = 0; DOSChunks[i].size != 0; i++)
+ {
+ ck = &DOSChunks[i];
+ size = ck->size;
+ cd_IOCTLBufferTotal += (size + 15) & 0xfffffff0;
+ *ck->address = DPMI_AllocRealMem(size, ck->segment, ck->selector);
+ if (*ck->address == NULL)
+ {
+ return -1;
+ }
+ memset(*ck->address, 0, size);
+ }
+ cd_IOCTLIn->headerSize = sizeof(struct IOCTLIn_s);
+ cd_IOCTLIn->command = DRC_IOCTLINPUT;
+ cd_IOCTLOut->headerSize = sizeof(struct IOCTLOut_s);
+ cd_IOCTLOut->command = DRC_IOCTLOUTPUT;
+ cd_PlayReq->headerSize = sizeof(struct PlayReq_s);
+ cd_PlayReq->command = DRC_PLAYAUDIO;
+ cd_StopReq->headerSize = sizeof(struct StopReq_s);
+ cd_StopReq->command = DRC_STOPAUDIO;
+ cd_ResumeReq->headerSize = sizeof(struct ResumeReq_s);
+ cd_ResumeReq->command = DRC_RESUMEAUDIO;
+ return 0;
+}
+
+//==========================================================================
+//
+// InputIOCTL
+//
+// Sends an IOCTL input device request command.
+//
+// Returns: the status of the request.
+//
+//==========================================================================
+
+static U_WORD InputIOCTL(S_LONG request, U_WORD buffSeg)
+{
+ U_BYTE *code;
+
+ code = (U_BYTE *) (buffSeg << 4);
+ *code = (U_BYTE) request;
+ cd_IOCTLIn->ctrlBlkAddr = buffSeg << 16;
+ cd_IOCTLIn->tranSize = InCtrlBlkSize[request];
+ memset(&RegBlock, 0, sizeof(RegBlock));
+ RegBlock.eax = CDROM_SENDDEVICEREQ;
+ RegBlock.ecx = cd_CurDrive;
+ RegBlock.ebx = 0;
+ RegBlock.es = cd_IOCTLInSeg;
+ DPMI_SimRealInt(MULTIPLEX_INT, &RegBlock);
+ return cd_IOCTLIn->status;
+}
+
+//==========================================================================
+//
+// OutputIOCTL
+//
+// Sends an IOCTL output device request command.
+//
+// Returns: the status of the request.
+//
+//==========================================================================
+
+static U_WORD OutputIOCTL(S_LONG request, U_WORD buffSeg)
+{
+ U_BYTE *code;
+
+ code = (U_BYTE *) (buffSeg << 4);
+ *code = (U_BYTE) request;
+ cd_IOCTLOut->ctrlBlkAddr = buffSeg << 16;
+ cd_IOCTLOut->tranSize = OutCtrlBlkSize[request];
+ RegBlock.eax = CDROM_SENDDEVICEREQ;
+ RegBlock.ecx = cd_CurDrive;
+ RegBlock.ebx = 0;
+ RegBlock.es = cd_IOCTLOutSeg;
+ DPMI_SimRealInt(MULTIPLEX_INT, &RegBlock);
+ return cd_IOCTLOut->status;
+}
+
+//==========================================================================
+//
+// RedToSectors
+//
+// Converts Red Book addresses to HSG sectors.
+// Sectors = Minutes * 60 * 75 + Seconds * 75 + Frame - 150
+//
+// Returns: HSG sectors.
+//
+//==========================================================================
+
+static U_LONG RedToSectors(U_LONG red)
+{
+ U_LONG sector;
+
+ sector = ((red & 0x00ff0000) >> 16) * 60 * 75;
+ sector += ((red & 0x0000ff00) >> 8) * 75;
+ sector += (red & 0x000000ff);
+ return sector - 150;
+}
+
+//==========================================================================
+//
+// DPMI_SimRealInt
+//
+//==========================================================================
+
+static void DPMI_SimRealInt(U_LONG intr, RegBlock_t * rBlock)
+{
+ union REGS regs;
+ struct SREGS sRegs;
+
+ regs.x.eax = DPMI_SIMREALINT;
+ regs.x.ebx = intr;
+ regs.x.ecx = 0;
+ regs.x.edi = FP_OFF((void far *) rBlock);
+ sRegs.es = FP_SEG((void far *) rBlock);
+ sRegs.ds = FP_SEG((void far *) rBlock);
+ int386x(DPMI_INT, &regs, &regs, &sRegs);
+}
+
+//==========================================================================
+//
+// DPMI_AllocRealMem
+//
+//==========================================================================
+
+static void *DPMI_AllocRealMem(U_LONG size, U_WORD * segment,
+ U_WORD * selector)
+{
+ union REGS inRegs;
+ union REGS outRegs;
+
+ inRegs.x.eax = DPMI_ALLOCREALMEM;
+ inRegs.x.ebx = (size + 15) / 16;
+ int386(DPMI_INT, &inRegs, &outRegs);
+ if (outRegs.x.cflag)
+ {
+ return NULL;
+ }
+ *segment = outRegs.x.eax & 0xffff;
+ *selector = outRegs.x.edx & 0xffff;
+ return (void *) (outRegs.x.eax << 4);
+}
+
+//==========================================================================
+//
+// DPMI_FreeRealMem
+//
+//==========================================================================
+
+static void DPMI_FreeRealMem(U_WORD selector)
+{
+ union REGS regs;
+
+ regs.x.eax = DPMI_FREEREALMEM;
+ regs.x.edx = selector;
+ int386(DPMI_INT, &regs, &regs);
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-05 22:57:29 +0000