416 lines
11 KiB
C
416 lines
11 KiB
C
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/****************************************************************************
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*
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* Digital Sound Interface Kit (DSIK)
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* Version 2.00
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*
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* by Carlos Hasan
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*
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* Filename: audio.h
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* Version: Revision 1.1
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*
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* Language: WATCOM C
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* Environment: IBM PC (DOS/4GW)
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*
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* Description: Audio Interface header file.
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*
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* Revision History:
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* ----------------
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*
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* Revision 1.1 94/11/05 12:13:39 chv
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* Added function to return the amount of free soundcard memory
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*
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* Revision 1.0 94/09/25 15:28:25 chv
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* Initial revision
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*
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****************************************************************************/
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#ifndef __AUDIO_H
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#define __AUDIO_H
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/* Misc defines */
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#define MAXVOICES 32
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#define MAXTRACKS 16
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#define MAXSAMPLES 256
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#define MAXORDERS 128
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#define MINPERIOD 28
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#define MAXPERIOD 6848
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#define MIDCPERIOD 428
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#define MIDCFREQ 8363
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/* Soundcards ID values */
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#define ID_NONE 0
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#define ID_SB 1
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#define ID_SB201 2
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#define ID_SBPRO 3
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#define ID_SB16 4
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#define ID_PAS 5
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#define ID_PASPLUS 6
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#define ID_PAS16 7
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#define ID_WSS 8
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#define ID_GUS 9
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#define ID_DEBUG 255
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/* Soundcards capabilities bit flags */
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#define AF_8BITS 0x00
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#define AF_16BITS 0x01
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#define AF_MONO 0x00
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#define AF_STEREO 0x02
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#define AF_NODRAM 0x00
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#define AF_DRAM 0x04
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/* Stereo panning values */
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#define PAN_LEFT 0x00
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#define PAN_MIDDLE 0x40
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#define PAN_RIGHT 0x80
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#define PAN_SURROUND 0xA4
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/* Internal lowlevel audio messages bitflags */
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#define AM_SAMPLE 0x01
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#define AM_KEYON 0x02
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#define AM_KEYOFF 0x04
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#define AM_VOLUME 0x08
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#define AM_BALANCE 0x10
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#define AM_SETCTL 0x20
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#define AM_GETCTL 0x40
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#define AM_PAUSE 0x80
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/* Music playing status values */
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#define PS_STOPPED 0
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#define PS_PLAYING 1
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#define PS_PAUSED 2
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/* Music pattern break modes */
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#define PB_NONE 0
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#define PB_BREAK 1
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#define PB_JUMP 2
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#define PB_HOLD 3
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#define PB_TRACE 4
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/* RIFF/DSMF block identifier values */
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#define ID_RIFF 0x46464952L
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#define ID_DSMF 0x464D5344L
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#define ID_SONG 0x474E4F53L
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#define ID_INST 0x54534E49L
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#define ID_PATT 0x54544150L
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/* RIFF/WAVE block identifier values */
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#define ID_WAVE 0x45564157L
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#define ID_FMT 0x20746D66L
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#define ID_DATA 0x61746164L
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/* RIFF/DSMF INST digital samples bit flags */
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#define SF_LOOPED 0x01
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#define SF_UNSIGNED 0x00
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#define SF_SIGNED 0x02
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#define SF_8BITS 0x00
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#define SF_16BITS 0x04
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#define SF_DELTA 0x40
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#define SF_LIBRARY 0x80
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/* RIFF/WAVE sample format */
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#define WAVE_FMT_PCM 1
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/* Error values */
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#define ERR_OK 0
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#define ERR_FORMAT 1
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#define ERR_NOFILE 2
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#define ERR_FILEIO 3
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#define ERR_NOMEM 4
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#define ERR_NODRAM 5
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* General typedefs */
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typedef unsigned long dword;
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/* Internal lowlevel audio drivers structure */
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#pragma pack(1)
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typedef struct {
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dword Magic;
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dword Next;
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byte ID;
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byte Modes;
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char Name[32];
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word Port;
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byte IrqLine;
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byte DmaChannel;
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word MinRate;
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word MaxRate;
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word BufferLength;
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void *ProcTablePtr;
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void *DriverPtr;
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word *ParmTablePtr;
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} Driver;
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/* Internal soundcards configuration structure */
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typedef struct SoundCard_s
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{
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byte ID;
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byte Modes;
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word Port;
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byte IrqLine;
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byte DmaChannel;
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word SampleRate;
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char DriverName[16];
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char inversepan;
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char ckeys[14];
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char effecttracks;
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int musicvol;
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int sfxvol;
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int ambientlight;
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int camdelay;
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int screensize;
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char animation;
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char violence;
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char joystick;
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char mouse;
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int chartype;
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int socket;
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int numplayers;
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char dialnum[13];
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int com;
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int serplayers;
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char netname[13];
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word jcenx, jceny, xsense, ysense;
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int rightbutton, leftbutton;
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int joybut1, joybut2;
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int netmap, netdifficulty;
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int mousesensitivity;
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int turnspeed, turnaccel;
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int vrhelmet;
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int vrangle;
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int vrdist;
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} SoundCard;
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/* RIFF file and block headers structures */
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typedef struct {
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dword ID;
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dword Length;
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dword Type;
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} RiffHeader;
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typedef struct {
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dword ID;
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dword Length;
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} RiffBlock;
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/* RIFF/WAVE fmt block structure */
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typedef struct {
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word Format;
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word Channels;
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dword SampleRate;
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dword BytesPerSecond;
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word BlockAlign;
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word BitsPerSample;
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} WaveFmt;
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/* RIFF/DSMF SONG block structure */
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typedef struct {
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char ModuleName[28];
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word FileVersion;
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word Flags;
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word OrderPos;
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word ReStart;
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word NumOrders;
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word NumSamples;
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word NumPatterns;
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word NumTracks;
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byte GlobalVolume;
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byte MasterVolume;
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byte InitTempo;
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byte InitBPM;
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byte ChanMap[MAXTRACKS];
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byte Orders[MAXORDERS];
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} Song;
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/* RIFF/DSMF INST block structure */
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typedef struct {
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char FileName[13];
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word Flags;
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byte Volume;
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dword Length;
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dword LoopStart;
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dword LoopEnd;
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void *DataPtr;
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word Rate;
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word Voice;
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char SampleName[28];
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} Sample;
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/* RIFF/DSMF PATT block structure */
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typedef struct {
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word Length;
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byte Data[1];
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} Pattern;
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/* Internal RIFF/DSMF music module structure */
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typedef struct {
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Song Header;
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Sample **Samples;
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Pattern **Patterns;
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} DSM;
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/* Internal music structures */
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typedef struct {
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byte Note; /* note index */
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byte Sample; /* sample number */
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byte Volume; /* volume level */
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byte Balance; /* balance */
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word Effect; /* Protracker command */
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word Rate; /* middle-C finetune frequency */
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byte VUMeter; /* volume unit meter */
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byte Flags; /* audio message bitflags */
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byte Reserved[38];
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} MTrk;
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typedef struct {
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dword MusicVolume; /* music volume */
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dword SoundVolume; /* sound effects volume */
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MTrk Tracks[MAXVOICES]; /* track structures */
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byte NumTracks; /* number of active tracks */
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byte NumVoices; /* number of active voices */
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byte OrderPos; /* order position */
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byte OrderLen; /* order length */
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byte ReStart; /* restart position */
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byte PattNum; /* pattern number */
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byte PattRow; /* pattern row */
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byte BreakFlag; /* break pattern mode */
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byte Tempo; /* tempo */
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byte TempoCount; /* tempo counter */
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byte BPM; /* beats per minute */
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byte SyncMark; /* synchronization mark */
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byte Status; /* music status */
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byte DriverStatus; /* audio driver status */
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void *PattPtr; /* internal pattern pointer */
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DSM *SongPtr; /* module pointer */
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} MHdr;
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#pragma pack(4)
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/* External lowlevel audio drivers */
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extern Driver _SBDriver;
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extern Driver _PASDriver;
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extern Driver _WSSDriver;
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extern Driver _GUSDriver;
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#define dRegisterDrivers() { \
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dRegisterDriver(&_SBDriver); dRegisterDriver(&_PASDriver); \
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dRegisterDriver(&_WSSDriver); dRegisterDriver(&_GUSDriver); }
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/* Global error variable */
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extern int dError;
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extern char *dErrorMsg[];
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/* Audio interface API prototypes */
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void dRegisterDriver(Driver *DriverPtr);
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Driver *dGetDriverStruc(int DriverId);
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int dGetDriverFlags(void);
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int dInit(SoundCard *SC);
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int dDone(void);
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void dPoll(void);
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void dSetupVoices(int NumVoices, int MasterVolume);
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long dMemAlloc(Sample *SampPtr);
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void dMemFree(Sample *SampPtr);
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long dMemAvail(void);
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void dSetMusicVolume(int Volume);
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void dSetSoundVolume(int Volume);
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int dPlayMusic(DSM *MusicPtr);
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int dPlayPatterns(DSM *MusicPtr, int OrderPos, int OrderEnd);
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void dStopMusic(void);
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int dPauseMusic(void);
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int dResumeMusic(void);
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int dGetMusicStatus(void);
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MHdr *dGetMusicStruc(void);
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void dPlayVoice(int Voice, Sample *SampPtr);
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void dStopVoice(int Voice);
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void dSetVoiceFreq(int Voice, int Freq);
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void dSetVoiceVolume(int Voice, int Volume);
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void dSetVoiceBalance(int Voice, int Balance);
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long dGetVoicePos(int Voice);
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int dGetVoiceStatus(int Voice);
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int dAutoDetect(SoundCard *SC);
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DSM *dLoadModule(char *Filename);
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void dFreeModule(DSM *MusicPtr);
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Sample *dLoadSample(char *Filename);
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void dFreeSample(Sample *SampPtr);
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DSM *dLoadModuleFile(int Handle, long Length);
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Sample *dLoadSampleFile(int Handle, long Length);
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int dLoadSetup(SoundCard *SC, char *Filename);
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int dSaveSetup(SoundCard *SC, char *Filename);
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#ifdef __cplusplus
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}
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#endif
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/* Register calling conventions used by the API routines */
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#pragma aux dRegisterDriver "_*" parm [eax];
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#pragma aux dGetDriverStruc "_*" parm [eax];
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#pragma aux dGetDriverFlags "_*" parm [];
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#pragma aux dInit "_*" parm [eax];
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#pragma aux dDone "_*" parm [];
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#pragma aux dPoll "_*" parm [];
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#pragma aux dSetupVoices "_*" parm [eax] [edx];
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#pragma aux dMemAlloc "_*" parm [eax] [edx];
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#pragma aux dMemFree "_*" parm [eax];
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#pragma aux dMemAvail "_*" parm [];
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#pragma aux dSetMusicVolume "_*" parm [eax];
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#pragma aux dSetSoundVolume "_*" parm [eax];
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#pragma aux dPlayMusic "_*" parm [eax];
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#pragma aux dPlayPatterns "_*" parm [eax] [edx] [ebx];
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#pragma aux dStopMusic "_*" parm [];
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#pragma aux dPauseMusic "_*" parm [];
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#pragma aux dResumeMusic "_*" parm [];
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#pragma aux dGetMusicStatus "_*" parm [];
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#pragma aux dGetMusicStruc "_*" parm [];
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#pragma aux dPlayVoice "_*" parm [eax] [edx];
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#pragma aux dStopVoice "_*" parm [eax];
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#pragma aux dSetVoiceFreq "_*" parm [eax] [edx];
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#pragma aux dSetVoiceVolume "_*" parm [eax] [edx];
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#pragma aux dSetVoiceBalance "_*" parm [eax] [edx];
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#pragma aux dGetVoicePos "_*" parm [eax];
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#pragma aux dGetVoiceStatus "_*" parm [eax];
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#pragma aux dAutoDetect "_*" parm [eax];
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#pragma aux dLoadModule "_*" parm [eax];
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#pragma aux dFreeModule "_*" parm [eax];
|
||
|
|
#pragma aux dLoadSample "_*" parm [eax];
|
||
|
|
#pragma aux dFreeSample "_*" parm [eax];
|
||
|
|
#pragma aux dLoadModuleFile "_*" parm [eax] [edx];
|
||
|
|
#pragma aux dLoadSampleFile "_*" parm [eax] [edx];
|
||
|
|
#pragma aux dLoadSetup "_*" parm [eax] [edx];
|
||
|
|
#pragma aux dSaveSetup "_*" parm [eax] [edx];
|
||
|
|
|
||
|
|
#pragma library (audio);
|
||
|
|
|
||
|
|
#endif
|