mss.h

hl2 source code. Do not use it illegal.

                                        void FAR *dest,
                                        U32       operation,
                                        U32       big_endian_output);
#else

typedef void (AILCALL FAR *MIXER_COPY) (void const FAR  *src,
                                        S32       src_len,
                                        void FAR *dest,
                                        U32       operation,
                                        U32       MMX_available);
#endif
#else

//
// Initialize mixer
//
// No other mixer functions may be called outside a MIXER_startup() /
// MIXER_shutdown() pair, except for the standard RIB function
// PROVIDER_query_attribute().  All provider attributes must be accessible
// without starting up the module.
//

typedef void (AILCALL FAR *MIXER_STARTUP)(void);

//
// Shut down mixer
//

typedef void (AILCALL FAR *MIXER_SHUTDOWN)(void);

//
// Flush mixer buffer
//

typedef void (AILCALL FAR *MIXER_FLUSH)   (S32 FAR *dest,
                                           S32      len,
                                           U32      MMX_available);

//
// Perform audio mixing operation
//

typedef void (AILCALL FAR *MIXER_MERGE)   (U32             src_sel,
                                           U32             dest_sel,
                                           U32        FAR *src_fract,
                                           U32        FAR *src_offset,
                                           U32        FAR *dest_offset,
                                           U32             src_end_offset,
                                           U32             dest_end_offset,
                                           S32  FAR       *left_val,
                                           S32  FAR       *right_val,
                                           S32             playback_ratio,
                                           S32             scale_both,
                                           U32             operation);

//
// Translate mixer buffer contents to final output format
//

typedef void (AILCALL FAR *MIXER_COPY) (void const FAR *src,
                                        S32       src_len,
                                        void FAR *dest,
                                        U32       operation,
                                        U32       MMX_available);
#endif

//
// Type definitions
//

struct _DIG_DRIVER;

struct _MDI_DRIVER;

typedef struct _DIG_DRIVER FAR * HDIGDRIVER;    // Handle to digital driver

typedef struct _MDI_DRIVER FAR * HMDIDRIVER;    // Handle to XMIDI driver

typedef struct _SAMPLE FAR * HSAMPLE;           // Handle to sample

typedef struct _SEQUENCE FAR * HSEQUENCE;       // Handle to sequence

typedef S32 HTIMER;                             // Handle to timer


#ifdef IS_DOS

//
// Type definitions
//

typedef struct                      // I/O parameters structure
{
   S16 IO;
   S16 IRQ;
   S16 DMA_8_bit;
   S16 DMA_16_bit;
   S32 IO_reserved[4];
}
IO_PARMS;

typedef struct                      // Standard MSS 3.X VDI driver header
{
   S8     ID[8];                    // "AIL3xxx" ID string, followed by ^Z

   U32    driver_version;

   REALFAR  common_IO_configurations;
   U16    num_IO_configurations;

   REALFAR  environment_string;

   IO_PARMS IO;

   S16     service_rate;

   U16    busy;

   U16    driver_num;             // Driver number

   U16    this_ISR;               // Offset of INT 66H dispatcher
   REALFAR  prev_ISR;               // Pointer to previous INT 66H ISR

   S8     scratch[128];           // Shared scratch workspace

   S8     dev_name[80];           // Device name (VDI version >= 1.12 only)
}
VDI_HDR;

typedef struct
{
   U16 minimum_physical_sample_rate;
   U16 nominal_physical_sample_rate;
   U16 maximum_physical_sample_rate;

   U16 minimum_DMA_half_buffer_size;
   U16 maximum_DMA_half_buffer_size;

   U32 flags;
}
DIG_MODE;

typedef struct
{
   U8    format_supported[16];
   DIG_MODE format_data[16];
}
DIG_DDT;

typedef struct
{
   REALFAR  DMA_buffer_A;
   REALFAR  DMA_buffer_B;
   S16     active_buffer;
}
DIG_DST;

typedef struct
{
   REALFAR  library_environment;
   REALFAR  GTL_suffix;

   U16    num_voices;

   U16    max_melodic_channel;
   U16    min_melodic_channel;
   U16    percussion_channel;
}
MDI_DDT;

typedef struct
{
   S8     library_directory[128];
   S8     GTL_filename[128];

   S8     MIDI_data[512];
}
MDI_DST;

typedef struct                   // Initialization file structure
{
   char     device_name[128];    // Device name
   char     driver_name[128];    // Driver filename
   IO_PARMS IO;                  // I/O parameters for driver
}
AIL_INI;

typedef struct                   // Handle to driver
{
   REALFAR  seg;                 // Seg:off pointer to driver (off=0)
   U32    sel;                   // Selector for driver (off=0)
   void    *buf;                 // Protected-mode pointer to driver
   U32    size;                  // Size of driver image
   VDI_HDR *VHDR;                // Pointer to driver header (same as buf)
   S32     type;                 // AIL3DIG or AIL3MDI (see below)

   S32     initialized;          // 1 if hardware successfully init'd, else 0

   S32     PM_ISR;               // -1 if no PM ISR hooked, else IRQ #

   HTIMER   server;              // DRV_SERVE periodic timer, if requested

                                 // Vector to high-level destructor, if any

   void (AILCALL *destructor)(HDIGDRIVER);

                                 // High-level descriptor (DIG_ or MDI_DRIVER)
   void        *descriptor;
}
AIL_DRIVER;

typedef struct                     // VDI interface register structure
{
   S16 AX;
   S16 BX;
   S16 CX;
   S16 DX;
   S16 SI;
   S16 DI;
}
VDI_CALL;

#endif

//
// Function pointer types
//

typedef void (AILCALLBACK FAR* AILINCB)       (void const FAR *data, S32 len, U32 user_data);

typedef void (AILCALLBACK FAR* AILTIMERCB)    (U32 user);

typedef void (AILCALLBACK FAR* AILSAMPLECB)   (HSAMPLE sample);

typedef S32  (AILCALLBACK FAR* AILEVENTCB)    (HMDIDRIVER hmi,HSEQUENCE seq,S32 status,S32 data_1,S32 data_2);

typedef S32  (AILCALLBACK FAR* AILTIMBRECB)   (HMDIDRIVER hmi,S32 bank,S32 patch);

typedef S32  (AILCALLBACK FAR* AILPREFIXCB)   (HSEQUENCE seq,S32 log,S32 data);

typedef void (AILCALLBACK FAR* AILTRIGGERCB)  (HSEQUENCE seq,S32 log,S32 data);

typedef void (AILCALLBACK FAR* AILBEATCB)     (HMDIDRIVER hmi,HSEQUENCE seq,S32 beat,S32 measure);

typedef void (AILCALLBACK FAR* AILSEQUENCECB) (HSEQUENCE seq);

//
// Handle to sample and driver being managed by pipeline filter
//

typedef S32 HSAMPLESTATE;
typedef S32 HDRIVERSTATE;

//
// Digital pipeline stages
//
// These are the points at which external modules may be installed into
// a given HSAMPLE or HDIGDRIVER's processing pipeline
//

typedef enum
{
   DP_ASI_DECODER=0,   // Must be "ASI codec stream" provider
   DP_FILTER,        // Must be "MSS pipeline filter" provider
   DP_MERGE,         // Must be "MSS mixer" provider
   N_SAMPLE_STAGES,  // Placeholder for end of list (= # of valid stages)
   SAMPLE_ALL_STAGES // Used to signify all pipeline stages, for shutdown
}
SAMPLESTAGE;

typedef enum
{
   DP_FLUSH = 0,     // Must be "MSS mixer" provider
   DP_DEFAULT_FILTER, // Must be "MSS pipeline filter" provider (sets the default)
   DP_DEFAULT_MERGE,  // Must be "MSS mixer" provider (sets the default)
   DP_COPY,          // Must be "MSS mixer" provider
   N_DIGDRV_STAGES,  // Placeholder for end of list (= # of valid stages)
   DIGDRV_ALL_STAGES // Used to signify all pipeline stages, for shutdown
}
DIGDRVSTAGE;

typedef struct
   {
   ASI_STREAM_OPEN           ASI_stream_open;
   ASI_STREAM_PROCESS        ASI_stream_process;
   ASI_STREAM_SEEK           ASI_stream_seek;
   ASI_STREAM_CLOSE          ASI_stream_close;
   ASI_STREAM_ATTRIBUTE      ASI_stream_attribute;
   ASI_STREAM_SET_PREFERENCE ASI_stream_set_preference;

   HATTRIB INPUT_BIT_RATE;
   HATTRIB INPUT_SAMPLE_RATE;
   HATTRIB INPUT_BITS;
   HATTRIB INPUT_CHANNELS;
   HATTRIB OUTPUT_BIT_RATE;
   HATTRIB OUTPUT_SAMPLE_RATE;
   HATTRIB OUTPUT_BITS;
   HATTRIB OUTPUT_CHANNELS;
   HATTRIB POSITION;
   HATTRIB PERCENT_DONE;
   HATTRIB MIN_INPUT_BLOCK_SIZE;
   HATTRIB RAW_RATE;
   HATTRIB RAW_BITS;
   HATTRIB RAW_CHANNELS;
   HATTRIB REQUESTED_RATE;
   HATTRIB REQUESTED_BITS;
   HATTRIB REQUESTED_CHANS;

   HASISTREAM stream;
   }
ASISTAGE;

typedef struct
   {
   MIXER_FLUSH MSS_mixer_flush;
   MIXER_MERGE MSS_mixer_merge;
   MIXER_COPY  MSS_mixer_copy;
   }
MIXSTAGE;

typedef struct
   {
   struct _FLTPROVIDER FAR *provider;
   HSAMPLESTATE             sample_state;
   }
FLTSTAGE;

typedef struct
{
   S32       active;    // Pass-through if 0, active if 1
   HPROVIDER provider;

   union
      {
      ASISTAGE ASI;
      MIXSTAGE MIX;
      FLTSTAGE FLT;
      }
   TYPE;
}
DPINFO;

//
// Other data types
//

typedef struct _AIL_INPUT_INFO        // Input descriptor type
{
   U32        device_ID;       // DS LPGUID or wave device ID
   U32        hardware_format; // e.g., DIG_F_STEREO_16
   U32        hardware_rate;   // e.g., 22050
   AILINCB    callback;        // Callback function to receive incoming data
   S32        buffer_size;     // Maximum # of bytes to be passed to callback (-1 to use DIG_INPUT_LATENCY)
   U32        user_data;       // this is a user defined value
}
AIL_INPUT_INFO;

typedef struct _AILTIMER                 // Timer instance
{
   U32      status;
   AILTIMERCB callback;
   U32      user;

   S32      elapsed;
   S32      value;
   S32      callingCT;           // Calling EXE's task number (16 bit only)
   S32      callingDS;           // Calling EXE's DS (used in 16 bit only)
} AILTIMERSTR;

typedef struct _ADPCMDATATAG
{
  U32 blocksize;
  U32 extrasamples;
  U32 blockleft;
  U32 step;
  U32 savesrc;
  U32 sample;
  U32 destend;
  U32 srcend;
  U32 samplesL;
  U32 samplesR;
  U16 moresamples[16];
} ADPCMDATA;

typedef struct LOWPASS_CONSTANT_INFO
{
  S32 A;
  S32 B0, B1;
} LOWPASS_CONSTANT_INFO;

typedef struct LOWPASS_UPDATED_INFO
{
  S32 XL0, XL