fpc/packages/winceunits/src/msacm.pp

{
    This file is part of the Free Pascal run time library.
    Copyright (c) 2008 Free Pascal development team.

    See the file COPYING.FPC, included in this distribution,
    for details about the copyright.

    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.

 ********************************************************************** }

// -----------------------------------------------------------------------------
//
//  msacm.h     Audio Compression Manager Public Header File
//
// -----------------------------------------------------------------------------

//
//  Microsoft Windows Mobile 6.0 for PocketPC SDK.
//

{$IFNDEF FPC_DOTTEDUNITS}
unit msacm;
{$ENDIF FPC_DOTTEDUNITS}

{$CALLING cdecl}
{$PACKRECORDS 1} // #pragma pack(1)         /* Assume byte packing throughout */

interface

{$IFDEF FPC_DOTTEDUNITS}
uses WinApi.Windows, WinceAPI.Mmreg;
{$ELSE FPC_DOTTEDUNITS}
uses Windows, mmreg;
{$ENDIF FPC_DOTTEDUNITS}

//
//  there are four types of 'handles' used by the ACM. the first three
//  are unique types that define specific objects:
//
//  HACMDRIVERID: used to _identify_ an ACM driver. this identifier can be
//  used to _open_ the driver for querying details, etc about the driver.
//
//  HACMDRIVER: used to manage a driver (codec, filter, etc). this handle
//  is much like a handle to other media drivers--you use it to send
//  messages to the converter, query for capabilities, etc.
//
//  HACMSTREAM: used to manage a 'stream' (conversion channel) with the
//  ACM. you use a stream handle to convert data from one format/type
//  to another--much like dealing with a file handle.
//
//
//  the fourth handle type is a generic type used on ACM functions that
//  can accept two or more of the above handle types (for example the
//  acmMetrics and acmDriverID functions).
//
//  HACMOBJ: used to identify ACM objects. this handle is used on functions
//  that can accept two or more ACM handle types.
//
type
     HACMDRIVERID = HANDLE;
     PHACMDRIVERID = ^HACMDRIVERID;
     LPHACMDRIVERID = ^HACMDRIVERID;

     HACMDRIVER = HANDLE;
     PHACMDRIVER = ^HACMDRIVER;
     LPHACMDRIVER = ^HACMDRIVER;

     HACMSTREAM = HANDLE;
     PHACMSTREAM = ^HACMSTREAM;
     LPHACMSTREAM = ^HACMSTREAM;

     HACMOBJ = HANDLE;
     PHACMOBJ = ^HACMOBJ;
     LPHACMOBJ = ^HACMOBJ;

     
// - Module: msacmdrv.h
// -----------------------------------------------------------------------------
//
//  Audio Compression Manager Public Header File for Drivers
//
// -----------------------------------------------------------------------------

const
// Driver messages
      DRV_LOAD                = $0001;
      DRV_ENABLE              = $0002;
      DRV_OPEN                = $0003;
      DRV_CLOSE               = $0004;
      DRV_DISABLE             = $0005;
      DRV_FREE                = $0006;
      DRV_CONFIGURE           = $0007;
      DRV_QUERYCONFIGURE      = $0008;
      DRV_INSTALL             = $0009;
      DRV_REMOVE              = $000A;
      DRV_EXITSESSION         = $000B;
      DRV_POWER               = $000F;
      DRV_RESERVED            = $0800;
      DRV_USER                = $4000;

type
     DRVCONFIGINFOEX = record
       dwDCISize:DWORD;
       lpszDCISectionName:LPCWSTR;
       lpszDCIAliasName:LPCWSTR;
       dnDevNode:DWORD;
     end;
     PDRVCONFIGINFOEX = ^DRVCONFIGINFOEX;
     NPDRVCONFIGINFOEX = ^DRVCONFIGINFOEX;
     LPDRVCONFIGINFOEX = ^DRVCONFIGINFOEX;

// LPARAM of DRV_CONFIGURE message
type
     tagDRVCONFIGINFO  = record
       dwDCISize:DWORD;
       lpszDCISectionName:LPCWSTR;
       lpszDCIAliasName:LPCWSTR;
     end;
     DRVCONFIGINFO = tagDRVCONFIGINFO;
     PDRVCONFIGINFO = ^tagDRVCONFIGINFO;
     NPDRVCONFIGINFO = ^tagDRVCONFIGINFO;
     LPDRVCONFIGINFO = ^tagDRVCONFIGINFO;

// Supported return values for DRV_CONFIGURE message
const
      DRVCNF_CANCEL           = $0000;
      DRVCNF_OK               = $0001;
      DRVCNF_RESTART          = $0002;

// return values from DriverProc() function
const
      DRV_CANCEL             = DRVCNF_CANCEL;
      DRV_OK                 = DRVCNF_OK;
      DRV_RESTART            = DRVCNF_RESTART;

//- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ;
//
//  ACM Driver Version:
//
//  the version is a 32 bit number that is broken into three parts as
//  follows:
//
//      bits 24 - 31:   8 bit _major_ version number
//      bits 16 - 23:   8 bit _minor_ version number
//      bits  0 - 15:   16 bit build number
//
//  this is then displayed as follows:
//
//      bMajor = (BYTE)(dwVersion >> 24)
//      bMinor = (BYTE)(dwVersion >> 16) &
//      wBuild = LOWORD(dwVersion)
//
//- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ;
function MAKE_ACM_VERSION(mjr:byte; mnr:byte; bld:word):DWORD;

{$DEFINE ACMDRVOPENDESC_SECTIONNAME_CHARS}

type
     tACMDRVOPENDESC = record
       cbStruct:DWORD;      // sizeof(ACMDRVOPENDESC)
       fccType:FOURCC;      // 'audc'
       fccComp:FOURCC;        // sub-type (not used--must be 0)
       dwVersion:DWORD;      // current version of ACM opening you
       dwFlags:DWORD;        //
       dwError:DWORD;        // result from DRV_OPEN request
       pszSectionName:LPCTSTR; // see DRVCONFIGINFO.lpszDCISectionName
       pszAliasName:LPCTSTR;   // see DRVCONFIGINFO.lpszDCIAliasName
       dnDevNode:DWORD;      // devnode id for pnp drivers.
     end;
     ACMDRVOPENDESC = tACMDRVOPENDESC;
     PACMDRVOPENDESC = ^tACMDRVOPENDESC;
     LPACMDRVOPENDESC = ^tACMDRVOPENDESC;

type
     tACMDRVSTREAMINSTANCE = record
       cbStruct:DWORD;
       pwfxSrc:LPWAVEFORMATEX;
       pwfxDst:LPWAVEFORMATEX;
       pwfltr:LPWAVEFILTER;
       dwCallback:DWORD;
       dwInstance:DWORD;
       fdwOpen:DWORD;
       fdwDriver:DWORD;
       dwDriver:DWORD;
       has:HACMSTREAM;
     end;
     ACMDRVSTREAMINSTANCE = tACMDRVSTREAMINSTANCE;
     PACMDRVSTREAMINSTANCE = ^tACMDRVSTREAMINSTANCE;
     LPACMDRVSTREAMINSTANCE = ^tACMDRVSTREAMINSTANCE;

//
//  NOTE! this structure must match the ACMSTREAMHEADER in msacm.h but
//  defines more information for the driver writing convenience
//
type
     LPACMDRVSTREAMHEADER = ^tACMDRVSTREAMHEADER;
     tACMDRVSTREAMHEADER = record
       cbStruct:DWORD;
       fdwStatus:DWORD;
       dwUser:DWORD;
       pbSrc:LPBYTE;
       cbSrcLength:DWORD;
       cbSrcLengthUsed:DWORD;
       dwSrcUser:DWORD;
       pbDst:LPBYTE;
       cbDstLength:DWORD;
       cbDstLengthUsed:DWORD;
       dwDstUser:DWORD;
       fdwConvert:DWORD;     // flags passed from convert func
       padshNext:LPACMDRVSTREAMHEADER;      // for async driver queueing
       fdwDriver:DWORD;      // driver instance flags
       dwDriver:DWORD;       // driver instance data

      //
      //  all remaining fields are used by the ACM for bookkeeping purposes.
      //  an ACM driver should never use these fields (though than can be
      //  helpful for debugging)--note that the meaning of these fields
      //  may change, so do NOT rely on them in shipping code.
      //
       fdwPrepared:DWORD;
       dwPrepared:DWORD;
       pbPreparedSrc:LPBYTE;
       cbPreparedSrcLength:DWORD;
       pbPreparedDst:LPBYTE;
       cbPreparedDstLength:DWORD;
     end;
     ACMDRVSTREAMHEADER = tACMDRVSTREAMHEADER;
     PACMDRVSTREAMHEADER = ^tACMDRVSTREAMHEADER;

//
//  structure for ACMDM_STREAM_SIZE message
//
type
     tACMDRVSTREAMSIZE = record
       cbStruct:DWORD;
       fdwSize:DWORD;
       cbSrcLength:DWORD;
       cbDstLength:DWORD;
     end;
     ACMDRVSTREAMSIZE = tACMDRVSTREAMSIZE;
     PACMDRVSTREAMSIZE = ^tACMDRVSTREAMSIZE;
     LPACMDRVSTREAMSIZE = ^tACMDRVSTREAMSIZE;

//
//  structure containing the information for the ACMDM_FORMAT_SUGGEST message
//
type
     tACMDRVFORMATSUGGEST = record
       cbStruct:DWORD; // sizeof(ACMDRVFORMATSUGGEST)
       fdwSuggest:DWORD;         // Suggest flags
       pwfxSrc:LPWAVEFORMATEX;            // Source Format
       cbwfxSrc:DWORD;           // Source Size
       pwfxDst:LPWAVEFORMATEX;            // Dest format
       cbwfxDst:DWORD;           // Dest Size
     end;
     ACMDRVFORMATSUGGEST = tACMDRVFORMATSUGGEST;
     PACMDRVFORMATSUGGEST = ^tACMDRVFORMATSUGGEST;
     LPACMDRVFORMATSUGGEST = ^tACMDRVFORMATSUGGEST;

//- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ;
//
//  ACM Driver Messages
//
//- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ;
const
      ACMDM_USER                  = DRV_USER + $0000;
      ACMDM_RESERVED_LOW          = DRV_USER + $2000;
      ACMDM_RESERVED_HIGH         = DRV_USER + $2FFF;

      ACMDM_BASE                  = ACMDM_RESERVED_LOW;

      ACMDM_DRIVER_ABOUT          = ACMDM_BASE + 11;

const
      ACMDM_DRIVER_NOTIFY             = ACMDM_BASE + 1;
      ACMDM_DRIVER_DETAILS            = ACMDM_BASE + 10;

      ACMDM_HARDWARE_WAVE_CAPS_INPUT  = ACMDM_BASE + 20;
      ACMDM_HARDWARE_WAVE_CAPS_OUTPUT = ACMDM_BASE + 21;

      ACMDM_FORMATTAG_DETAILS         = ACMDM_BASE + 25;
      ACMDM_FORMAT_DETAILS            = ACMDM_BASE + 26;
      ACMDM_FORMAT_SUGGEST            = ACMDM_BASE + 27;

      ACMDM_FILTERTAG_DETAILS         = ACMDM_BASE + 50;
      ACMDM_FILTER_DETAILS            = ACMDM_BASE + 51;

      ACMDM_STREAM_OPEN               = ACMDM_BASE + 76;
      ACMDM_STREAM_CLOSE              = ACMDM_BASE + 77;
      ACMDM_STREAM_SIZE               = ACMDM_BASE + 78;
      ACMDM_STREAM_CONVERT            = ACMDM_BASE + 79;
      ACMDM_STREAM_RESET              = ACMDM_BASE + 80;
      ACMDM_STREAM_PREPARE            = ACMDM_BASE + 81;
      ACMDM_STREAM_UNPREPARE          = ACMDM_BASE + 82;
      ACMDM_STREAM_UPDATE             = ACMDM_BASE + 83;

// - End of module: msacmdrv.h


//- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ;
//
//
//
//
//- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ;
const
      DRV_MAPPER_PREFERRED_INPUT_GET  = DRV_USER + 0;
      DRV_MAPPER_PREFERRED_OUTPUT_GET = DRV_USER + 2;
      DRVM_MAPPER_STATUS              = $2000;

      WIDM_MAPPER_STATUS              = DRVM_MAPPER_STATUS + 0;
      WAVEIN_MAPPER_STATUS_DEVICE     = 0;
      WAVEIN_MAPPER_STATUS_MAPPED     = 1;
      WAVEIN_MAPPER_STATUS_FORMAT     = 2;

      WODM_MAPPER_STATUS              = DRVM_MAPPER_STATUS + 0;
      WAVEOUT_MAPPER_STATUS_DEVICE    = 0;
      WAVEOUT_MAPPER_STATUS_MAPPED    = 1;
      WAVEOUT_MAPPER_STATUS_FORMAT    = 2;


//- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ;
//
//  ACM Error Codes
//
//  Note that these error codes are specific errors that apply to the ACM
//  directly--general errors are defined as MMSYSERR_*.
//
//- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ;
type
     MMRESULT = UINT;

const
      ACMERR_BASE         = 512;
      ACMERR_NOTPOSSIBLE  = ACMERR_BASE + 0;
      ACMERR_BUSY         = ACMERR_BASE + 1;
      ACMERR_UNPREPARED   = ACMERR_BASE + 2;
      ACMERR_CANCELED     = ACMERR_BASE + 3;

//- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ;
//
//  ACM Window Messages
//
//  These window messages are sent by the ACM or ACM drivers to notify
//  applications of events.
//
//  Note that these window message numbers will also be defined in
//  mmsystem.
//
//- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ;
const
      MM_ACM_OPEN         = $03D4; // MM_STREAM_OPEN  // conversion callback messages
      MM_ACM_CLOSE        = $03D5; // MM_STREAM_CLOSE
      MM_ACM_DONE         = $03D6; // MM_STREAM_DONE

//- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ;
//
//  acmGetVersion()
//
//  the ACM version is a 32 bit number that is broken into three parts as 
//  follows:
//
//      bits 24 - 31:   8 bit _major_ version number
//      bits 16 - 23:   8 bit _minor_ version number
//      bits  0 - 15:   16 bit build number
//
//  this is then displayed as follows:
//
//      bMajor = (BYTE)(dwVersion >> 24)
//      bMinor = (BYTE)(dwVersion >> 16) & 
//      wBuild = LOWORD(dwVersion)
//
//- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ;
function acmGetVersion:DWORD; external KernelDLL name 'acmGetVersion'; // index 2A5

//- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ;
//
//  acmMetrics()
//
//- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ;
function acmMetrics(hao:HACMOBJ; uMetric:UINT; pMetric:LPVOID):MMRESULT; external KernelDLL name 'acmMetrics'; // index 2A6

const
      ACM_METRIC_COUNT_DRIVERS            = 1;
      ACM_METRIC_COUNT_CODECS             = 2;
      ACM_METRIC_COUNT_CONVERTERS         = 3;
      ACM_METRIC_COUNT_FILTERS            = 4;
      ACM_METRIC_COUNT_DISABLED           = 5;
      ACM_METRIC_COUNT_HARDWARE           = 6;
      ACM_METRIC_COUNT_LOCAL_DRIVERS      = 20;
      ACM_METRIC_COUNT_LOCAL_CODECS       = 21;
      ACM_METRIC_COUNT_LOCAL_CONVERTERS   = 22;
      ACM_METRIC_COUNT_LOCAL_FILTERS      = 23;
      ACM_METRIC_COUNT_LOCAL_DISABLED     = 24;
      ACM_METRIC_HARDWARE_WAVE_INPUT      = 30;
      ACM_METRIC_HARDWARE_WAVE_OUTPUT     = 31;
      ACM_METRIC_MAX_SIZE_FORMAT          = 50;
      ACM_METRIC_MAX_SIZE_FILTER          = 51;
      ACM_METRIC_DRIVER_SUPPORT           = 100;
      ACM_METRIC_DRIVER_PRIORITY          = 101;


//--------------------------------------------------------------------------;
//
//  ACM Drivers
//
//--------------------------------------------------------------------------;

//- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ;
//
//  acmDriverEnum()
//
//- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ;
type
     ACMDRIVERENUMCB = function(hadid:HACMDRIVERID; dwInstance:DWORD; fdwSupport:DWORD):BOOL; cdecl;


function acmDriverEnum(fnCallback:ACMDRIVERENUMCB; dwInstance:DWORD; fdwEnum:DWORD):MMRESULT; external KernelDLL name 'acmDriverEnum'; // index 28E

const
      ACM_DRIVERENUMF_NOLOCAL     = $40000000;
      ACM_DRIVERENUMF_DISABLED    = $80000000;

//- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ;
//
//  acmDriverID()
//
//- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ;
function acmDriverID(hao:HACMOBJ; phadid:LPHACMDRIVERID; fdwDriverID:DWORD):MMRESULT; external KernelDLL name 'acmDriverID'; // index 28F

//- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ;
//
//  acmDriverAdd()
//
//- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ;
function acmDriverAdd(phadid:LPHACMDRIVERID;
                      hinstModule:HINST;
                      lParam:LPARAM;
                      dwPriority:DWORD;
                      fdwAdd:DWORD):MMRESULT; external KernelDLL name 'acmDriverAdd'; // index 28B

const
      ACM_DRIVERADDF_NOTIFYHWND   = $00000004;  // lParam is notify hwnd


//
//  prototype for ACM driver procedures that are installed as _functions_
//  or _notifications_ instead of as a standalone installable driver.
//
type
     ACMDRIVERPROC = function(dwID:DWORD; hDrvID:HACMDRIVERID; uMsg:UINT; lParam1:LPARAM; lParam2:LPARAM):LRESULT; cdecl;
     LPACMDRIVERPROC = ^ACMDRIVERPROC;

//- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ;
//
//  acmDriverRemove()
//
//- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ;
function acmDriverRemove(hadid:HACMDRIVERID; fdwRemove:DWORD):MMRESULT; external KernelDLL name 'acmDriverRemove'; // index 293

//- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ;
//
//  acmDriverOpen()
//
//- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ;
function acmDriverOpen(phad:LPHACMDRIVER; hadid:HACMDRIVERID; fdwOpen:DWORD):MMRESULT; external KernelDLL name 'acmDriverOpen'; // index 291

//- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ;
//
//  acmDriverClose()
//
//- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ;
function acmDriverClose(had:HACMDRIVER; fdwClose:DWORD):MMRESULT; external KernelDLL name 'acmDriverClose'; // index 28C

//- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ;
//
//  acmDriverMessage()
//
//- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ;
function acmDriverMessage(had:HACMDRIVER; uMsg:UINT; lParam1:LPARAM; lParam2:LPARAM):LRESULT; external KernelDLL name 'acmDriverMessage'; // index 290


//- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ;
//
//  acmDriverPriority
//
//- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ;
function acmDriverPriority(hadid:HACMDRIVERID; dwPriority:DWORD; fdwPriority:DWORD):MMRESULT; external KernelDLL name 'acmDriverPriority'; // index 292

const
      ACM_DRIVERPRIORITYF_ENABLE      = $00000001;
      ACM_DRIVERPRIORITYF_DISABLE     = $00000002;
      ACM_DRIVERPRIORITYF_ABLEMASK    = $00000003;
      ACM_DRIVERPRIORITYF_BEGIN       = $00010000;
      ACM_DRIVERPRIORITYF_END         = $00020000;
      ACM_DRIVERPRIORITYF_DEFERMASK   = $00030000;

      
//- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ;
//
//  acmDriverDetails()
//
//- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ;

//
//  ACMDRIVERDETAILS
//
//  the ACMDRIVERDETAILS structure is used to get various capabilities from
//  an ACM driver (codec, converter, filter).
//
const
      ACMDRIVERDETAILS_SHORTNAME_CHARS    = 32;
      ACMDRIVERDETAILS_LONGNAME_CHARS     = 128;
      ACMDRIVERDETAILS_COPYRIGHT_CHARS    = 80;
      ACMDRIVERDETAILS_LICENSING_CHARS    = 128;
      ACMDRIVERDETAILS_FEATURES_CHARS     = 512;

type
     tACMDRIVERDETAILS = record
       cbStruct:DWORD;           // number of valid bytes in structure
       fccType:FOURCC;            // compressor type 'audc'
       fccComp:FOURCC;            // sub-type (not used; reserved)

       wMid:word;               // manufacturer id
       wPid:word;               // product id

       vdwACM:DWORD;             // version of the ACM *compiled* for
       vdwDriver:DWORD;          // version of the driver

       fdwSupport:DWORD;         // misc. support flags
       cFormatTags:DWORD;        // total unique format tags supported
       cFilterTags:DWORD;        // total unique filter tags supported

       _hicon:HICON;              // handle to custom icon

       szShortName:array[0..ACMDRIVERDETAILS_SHORTNAME_CHARS-1] of WCHAR;
       szLongName:array[0..ACMDRIVERDETAILS_LONGNAME_CHARS-1] of WCHAR;
       szCopyright:array[0..ACMDRIVERDETAILS_COPYRIGHT_CHARS-1] of WCHAR;
       szLicensing:array[0..ACMDRIVERDETAILS_LICENSING_CHARS-1] of WCHAR;
       szFeatures:array[0..ACMDRIVERDETAILS_FEATURES_CHARS-1] of WCHAR;
     end;
     _ACMDRIVERDETAILS = tACMDRIVERDETAILS;
     PACMDRIVERDETAILS = ^tACMDRIVERDETAILS;
     LPACMDRIVERDETAILS = ^tACMDRIVERDETAILS;


//
//  ACMDRIVERDETAILS.fccType
//
//  ACMDRIVERDETAILS_FCCTYPE_AUDIOCODEC: the FOURCC used in the fccType
//  field of the ACMDRIVERDETAILS structure to specify that this is an ACM
//  codec designed for audio.
//
//
//  ACMDRIVERDETAILS.fccComp
//
//  ACMDRIVERDETAILS_FCCCOMP_UNDEFINED: the FOURCC used in the fccComp
//  field of the ACMDRIVERDETAILS structure. this is currently an unused
//  field.
//
const
      ACMDRIVERDETAILS_FCCTYPE_AUDIOCODEC = FOURCC(byte(AnsiChar('a')) or
                                                   (byte(AnsiChar('u')) shl 8) or
                                                   (byte(AnsiChar('d')) shl 16) or
                                                   (byte(AnsiChar('c')) shl 24)
                                                  );

      ACMDRIVERDETAILS_FCCCOMP_UNDEFINED  = FOURCC(byte(AnsiChar(#0)) or
                                                   (byte(AnsiChar(#0)) shl 8) or
                                                   (byte(AnsiChar(#0)) shl 16) or
                                                   (byte(AnsiChar(#0)) shl 24) 
                                                  );

//
//  the following flags are used to specify the type of conversion(s) that
//  the converter/codec/filter supports. these are placed in the fdwSupport
//  field of the ACMDRIVERDETAILS structure. note that a converter can
//  support one or more of these flags in any combination.
//
//  ACMDRIVERDETAILS_SUPPORTF_CODEC: this flag is set if the driver supports
//  conversions from one format tag to another format tag. for example, if a
//  converter compresses WAVE_FORMAT_PCM to WAVE_FORMAT_ADPCM, then this bit
//  should be set.
//
//  ACMDRIVERDETAILS_SUPPORTF_CONVERTER: this flags is set if the driver
//  supports conversions on the same format tag. as an example, the PCM
//  converter that is built into the ACM sets this bit (and only this bit)
//  because it converts only PCM formats (bits, sample rate).
//
//  ACMDRIVERDETAILS_SUPPORTF_FILTER: this flag is set if the driver supports
//  transformations on a single format. for example, a converter that changed
//  the 'volume' of PCM data would set this bit. 'echo' and 'reverb' are
//  also filter types.
//
//  ACMDRIVERDETAILS_SUPPORTF_HARDWARE: this flag is set if the driver supports
//  hardware input and/or output through a waveform device.
//
//  ACMDRIVERDETAILS_SUPPORTF_ASYNC: this flag is set if the driver supports
//  async conversions.
//
//
//  ACMDRIVERDETAILS_SUPPORTF_LOCAL: this flag is set _by the ACM_ if a
//  driver has been installed local to the current task. this flag is also
//  set in the fdwSupport argument to the enumeration callback function
//  for drivers.
//
//  ACMDRIVERDETAILS_SUPPORTF_DISABLED: this flag is set _by the ACM_ if a
//  driver has been disabled. this flag is also passed set in the fdwSupport
//  argument to the enumeration callback function for drivers.
//
const
      ACMDRIVERDETAILS_SUPPORTF_CODEC     = $00000001;
      ACMDRIVERDETAILS_SUPPORTF_CONVERTER = $00000002;
      ACMDRIVERDETAILS_SUPPORTF_FILTER    = $00000004;
      ACMDRIVERDETAILS_SUPPORTF_HARDWARE  = $00000008;
      ACMDRIVERDETAILS_SUPPORTF_ASYNC     = $00000010;
      ACMDRIVERDETAILS_SUPPORTF_LOCAL     = $40000000;
      ACMDRIVERDETAILS_SUPPORTF_DISABLED  = $80000000;

function acmDriverDetails(hadid:HACMDRIVERID;
                          padd:LPACMDRIVERDETAILS;
                          fdwDetails:DWORD):MMRESULT; external KernelDLL name 'acmDriverDetails'; // index 28D

                          

//--------------------------------------------------------------------------;
//
//  ACM Format Tags
//
//--------------------------------------------------------------------------;

//- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ;
//
//  acmFormatTagDetails()
//
//- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ;
const
      ACMFORMATTAGDETAILS_FORMATTAG_CHARS = 48;

type
     tACMFORMATTAGDETAILSW = record
       cbStruct:DWORD;
       dwFormatTagIndex:DWORD;
       dwFormatTag:DWORD;
       cbFormatSize:DWORD;
       fdwSupport:DWORD;
       cStandardFormats:DWORD;
       szFormatTag:array[0..ACMFORMATTAGDETAILS_FORMATTAG_CHARS-1] of WCHAR;
     end;
     tACMFORMATTAGDETAILS = tACMFORMATTAGDETAILSW;
     _ACMFORMATTAGDETAILS = tACMFORMATTAGDETAILSW;
     PACMFORMATTAGDETAILS = ^tACMFORMATTAGDETAILSW;
     LPACMFORMATTAGDETAILS = ^tACMFORMATTAGDETAILSW;

function acmFormatTagDetails(had:HACMDRIVER;
                             paftd:LPACMFORMATTAGDETAILS;
                             fdwDetails:DWORD):MMRESULT; external KernelDLL name 'acmFormatTagDetails'; // index 29B

const
      ACM_FORMATTAGDETAILSF_INDEX         = $00000000;
      ACM_FORMATTAGDETAILSF_FORMATTAG     = $00000001;
      ACM_FORMATTAGDETAILSF_LARGESTSIZE   = $00000002;
      ACM_FORMATTAGDETAILSF_QUERYMASK     = $0000000F;

//- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ;
//
//  acmFormatTagEnum()
//
//- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ;
type
     ACMFORMATTAGENUMCB = function(hadid:HACMDRIVERID;
                                   paftd:LPACMFORMATTAGDETAILS;
                                   dwInstance:DWORD;
                                   fdwSupport:DWORD):BOOL; cdecl;

function acmFormatTagEnum(had:HACMDRIVER;
                          paftd:LPACMFORMATTAGDETAILS;
                          fnCallback:ACMFORMATTAGENUMCB;
                          dwInstance:DWORD;
                          fdwEnum:DWORD):MMRESULT; external KernelDLL name 'acmFormatTagEnum'; // index 29C


//--------------------------------------------------------------------------;
//
//  ACM Formats
//
//--------------------------------------------------------------------------;

//- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ;
//
//  acmFormatDetails()
//
//- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ;
const
      ACMFORMATDETAILS_FORMAT_CHARS   = 128;

type
     tACMFORMATDETAILS = record
       cbStruct:DWORD;
       dwFormatIndex:DWORD;
       dwFormatTag:DWORD;
       fdwSupport:DWORD;
       pwfx:LPWAVEFORMATEX;
       cbwfx:DWORD;
       szFormat:array[0..ACMFORMATDETAILS_FORMAT_CHARS-1] of WCHAR;
     end;
     _ACMFORMATDETAILS = tACMFORMATDETAILS;
     PACMFORMATDETAILS = ^tACMFORMATDETAILS;
     LPACMFORMATDETAILS = ^tACMFORMATDETAILS;

function acmFormatDetails(had:HACMDRIVER; pafd:LPACMFORMATDETAILS; fdwDetails:DWORD):MMRESULT; external KernelDLL name 'acmFormatDetails'; // index 298

const
      ACM_FORMATDETAILSF_INDEX        = $00000000;
      ACM_FORMATDETAILSF_FORMAT       = $00000001;
      ACM_FORMATDETAILSF_QUERYMASK    = $0000000F;


//- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ;
//
//  acmFormatEnum()
//
//- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ;
type
     ACMFORMATENUMCB = function(hadid:HACMDRIVERID;
                                pafd:LPACMFORMATDETAILS;
                                dwInstance:DWORD;
                                fdwSupport:DWORD):BOOL; cdecl;

function acmFormatEnum(had:HACMDRIVER;
                       pafd:LPACMFORMATDETAILS;
                       fnCallback:ACMFORMATENUMCB;
                       dwInstance:DWORD;
                       fdwEnum:DWORD):MMRESULT; external KernelDLL name 'acmFormatEnum'; // index 299

const
      ACM_FORMATENUMF_WFORMATTAG       = $00010000;
      ACM_FORMATENUMF_NCHANNELS        = $00020000;
      ACM_FORMATENUMF_NSAMPLESPERSEC   = $00040000;
      ACM_FORMATENUMF_WBITSPERSAMPLE   = $00080000;
      ACM_FORMATENUMF_CONVERT          = $00100000;
      ACM_FORMATENUMF_SUGGEST          = $00200000;
      ACM_FORMATENUMF_HARDWARE         = $00400000;
      ACM_FORMATENUMF_INPUT            = $00800000;
      ACM_FORMATENUMF_OUTPUT           = $01000000;

//- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ;
//
//  acmFormatSuggest()
//
//- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ;
function acmFormatSuggest(had:HACMDRIVER;
                          pwfxSrc:LPWAVEFORMATEX;
                          pwfxDst:LPWAVEFORMATEX;
                          cbwfxDst:DWORD;
                          fdwSuggest:DWORD):MMRESULT; external KernelDLL name 'acmFormatSuggest'; // index 29A

const
      ACM_FORMATSUGGESTF_WFORMATTAG       = $00010000;
      ACM_FORMATSUGGESTF_NCHANNELS        = $00020000;
      ACM_FORMATSUGGESTF_NSAMPLESPERSEC   = $00040000;
      ACM_FORMATSUGGESTF_WBITSPERSAMPLE   = $00080000;

      ACM_FORMATSUGGESTF_TYPEMASK         = $00FF0000;


//- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ;
//
//  acmFormatChoose()
//
//- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ;
const
      ACMHELPMSGSTRING        = 'acmchoose_help';
      ACMHELPMSGCONTEXTMENU   = 'acmchoose_contextmenu';
      ACMHELPMSGCONTEXTHELP   = 'acmchoose_contexthelp';

//
//  MM_ACM_FORMATCHOOSE is sent to hook callbacks by the Format Chooser
//  Dialog...
//
const
      MM_ACM_FORMATCHOOSE             = $8000;

       FORMATCHOOSE_MESSAGE           = 0;
       FORMATCHOOSE_FORMATTAG_VERIFY  = FORMATCHOOSE_MESSAGE + 0;
       FORMATCHOOSE_FORMAT_VERIFY     = FORMATCHOOSE_MESSAGE + 1;
       FORMATCHOOSE_CUSTOM_VERIFY     = FORMATCHOOSE_MESSAGE + 2;

type
     ACMFORMATCHOOSEHOOKPROC = function(hwnd:HWND;
                                        uMsg:UINT;
                                        wParam:WPARAM;
                                        lParam:LPARAM):UINT; cdecl;
type
     tACMFORMATCHOOSE = record
       cbStruct:DWORD;           // sizeof(ACMFORMATCHOOSE)
       fdwStyle:DWORD;           // chooser style flags

       hwndOwner:HWND;          // caller's window handle

       pwfx:LPWAVEFORMATEX;               // ptr to wfx buf to receive choice
       cbwfx:DWORD;              // size of mem buf for pwfx
       pszTitle:LPCWSTR;           // dialog box title bar

       szFormatTag:array[0..ACMFORMATTAGDETAILS_FORMATTAG_CHARS-1] of WCHAR;
       szFormat:array[0..ACMFORMATDETAILS_FORMAT_CHARS-1] of WCHAR;

       pszName:LPWSTR;            // custom name selection
       cchName:DWORD;            // size in chars of mem buf for pszName

       fdwEnum:DWORD;            // format enumeration restrictions
       pwfxEnum:LPWAVEFORMATEX;  // format describing restrictions

       hInstance:HINST;          // app instance containing dlg template
       pszTemplateName:LPCWSTR;    // custom template name
       lCustData:LPARAM;          // data passed to hook fn.
       pfnHook:ACMFORMATCHOOSEHOOKPROC;    // ptr to hook function
     end;
     _ACMFORMATCHOOSE = tACMFORMATCHOOSE;
     PACMFORMATCHOOSE = ^tACMFORMATCHOOSE;
     LPACMFORMATCHOOSE = ^tACMFORMATCHOOSE;

//
//  ACMFORMATCHOOSE.fdwStyle
//
const
      ACMFORMATCHOOSE_STYLEF_SHOWHELP              = $00000004;
      ACMFORMATCHOOSE_STYLEF_ENABLEHOOK            = $00000008;
      ACMFORMATCHOOSE_STYLEF_ENABLETEMPLATE        = $00000010;
      ACMFORMATCHOOSE_STYLEF_ENABLETEMPLATEHANDLE  = $00000020;
      ACMFORMATCHOOSE_STYLEF_INITTOWFXSTRUCT       = $00000040;
      ACMFORMATCHOOSE_STYLEF_CONTEXTHELP           = $00000080;

function acmFormatChoose(pafmtc:LPACMFORMATCHOOSE):MMRESULT; external KernelDLL name 'acmFormatChoose'; // index 2A7


//--------------------------------------------------------------------------;
//
//  ACM Filter Tags
//
//--------------------------------------------------------------------------;

//- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ;
//
//  acmFilterTagDetails()
//
//- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ;
const
      ACMFILTERTAGDETAILS_FILTERTAG_CHARS = 48;

type
     tACMFILTERTAGDETAILS = record
       cbStruct:DWORD;
       dwFilterTagIndex:DWORD;
       dwFilterTag:DWORD;
       cbFilterSize:DWORD;
       fdwSupport:DWORD;
       cStandardFilters:DWORD;
       szFilterTag:array[0..ACMFILTERTAGDETAILS_FILTERTAG_CHARS-1] of WCHAR;
     end;
     _ACMFILTERTAGDETAILS = tACMFILTERTAGDETAILS;
     PACMFILTERTAGDETAILS = ^tACMFILTERTAGDETAILS;
     LPACMFILTERTAGDETAILS = ^tACMFILTERTAGDETAILS;

function acmFilterTagDetails(had:HACMDRIVER;
                             paftd:LPACMFILTERTAGDETAILS;
                             fdwDetails:DWORD):MMRESULT; external KernelDLL name 'acmFilterTagDetails'; // index 296 

const
      ACM_FILTERTAGDETAILSF_INDEX         = $00000000;
      ACM_FILTERTAGDETAILSF_FILTERTAG     = $00000001;
      ACM_FILTERTAGDETAILSF_LARGESTSIZE   = $00000002;
      ACM_FILTERTAGDETAILSF_QUERYMASK     = $0000000F;

//- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ;
//
//  acmFilterTagEnum()
//
//- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ;
type
     ACMFILTERTAGENUMCB = function(hadid:HACMDRIVERID;
                                   paftd:LPACMFILTERTAGDETAILS;
                                   dwInstance:DWORD;
                                   fdwSupport:DWORD):BOOL; cdecl;

function acmFilterTagEnum(had:HACMDRIVER;
                          paftd:LPACMFILTERTAGDETAILS;
                          fnCallback:ACMFILTERTAGENUMCB;
                          dwInstance:DWORD;
                          fdwEnum:DWORD):MMRESULT; external KernelDLL name 'acmFilterTagEnum'; // index 297 


//--------------------------------------------------------------------------;
//
//  ACM Filters
//
//--------------------------------------------------------------------------;

//- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ;
//
//  acmFilterDetails()
//
//- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ;
const
      ACMFILTERDETAILS_FILTER_CHARS   = 128;

type
     tACMFILTERDETAILS = record
       cbStruct:DWORD;
       dwFilterIndex:DWORD;
       dwFilterTag:DWORD;
       fdwSupport:DWORD;
       pwfltr:LPWAVEFILTER;
       cbwfltr:DWORD;
       szFilter:array[0..ACMFILTERDETAILS_FILTER_CHARS-1] of WCHAR;
     end;
     _ACMFILTERDETAILS = tACMFILTERDETAILS;
     PACMFILTERDETAILS = ^tACMFILTERDETAILS;
     LPACMFILTERDETAILS = ^tACMFILTERDETAILS;

function acmFilterDetails(had:HACMDRIVER;
                          pafd:LPACMFILTERDETAILS;
                          fdwDetails:DWORD):MMRESULT; external KernelDLL name 'acmFilterDetails'; // index 294

const
      ACM_FILTERDETAILSF_INDEX        = $00000000;
      ACM_FILTERDETAILSF_FILTER       = $00000001;
      ACM_FILTERDETAILSF_QUERYMASK    = $0000000F;

//- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ;
//
//  acmFilterEnum()
//
//- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ;
type
     ACMFILTERENUMCB = function(hadid:HACMDRIVERID;
                                pafd:LPACMFILTERDETAILS;      
                                dwInstance:DWORD;
                                fdwSupport:DWORD):BOOL; cdecl;

function acmFilterEnum(had:HACMDRIVER;
                       pafd:LPACMFILTERDETAILS;
                       fnCallback:ACMFILTERENUMCB;
                       dwInstance:DWORD;
                       fdwEnum:DWORD):MMRESULT; external KernelDLL name 'acmFilterEnum'; // index 295

const
      ACM_FILTERENUMF_DWFILTERTAG         = $00010000;


//- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ;
//
//  acmFilterChoose()
//
//- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ;

//
//  MM_ACM_FILTERCHOOSE is sent to hook callbacks by the Filter Chooser
//  Dialog...
//
const
      MM_ACM_FILTERCHOOSE             = $8000;

      FILTERCHOOSE_MESSAGE            = 0;
      FILTERCHOOSE_FILTERTAG_VERIFY   = FILTERCHOOSE_MESSAGE + 0;
      FILTERCHOOSE_FILTER_VERIFY      = FILTERCHOOSE_MESSAGE + 1;
      FILTERCHOOSE_CUSTOM_VERIFY      = FILTERCHOOSE_MESSAGE + 2;

type
     ACMFILTERCHOOSEHOOKPROC = function(hwnd:HWND;
                                        uMsg:UINT;                    
                                        wParam:WPARAM;
                                        lParam:LPARAM):UINT; cdecl;

//
//  ACMFILTERCHOOSE
//
type
     tACMFILTERCHOOSE = record
       cbStruct:DWORD;           // sizeof(ACMFILTERCHOOSE)
       fdwStyle:DWORD;           // chooser style flags

       hwndOwner:HWND;          // caller's window handle

       pwfltr:LPWAVEFILTER;             // ptr to wfltr buf to receive choice
       cbwfltr:DWORD;            // size of mem buf for pwfltr

       pszTitle:LPCWSTR;

       szFilterTag:array[0..ACMFILTERTAGDETAILS_FILTERTAG_CHARS-1] of WCHAR;
       szFilter:array[0..ACMFILTERDETAILS_FILTER_CHARS-1] of WCHAR;
       pszName:LPWSTR;            // custom name selection
       cchName:DWORD;            // size in chars of mem buf for pszName

       fdwEnum:DWORD;            // filter enumeration restrictions
       pwfltrEnum:LPWAVEFILTER;         // filter describing restrictions

       hInstance:HINST;          // app instance containing dlg template
       pszTemplateName:LPCWSTR;    // custom template name
       lCustData:LPARAM;          // data passed to hook fn.
       pfnHook:ACMFILTERCHOOSEHOOKPROC;    // ptr to hook function
     end;
     _ACMFILTERCHOOSE = tACMFILTERCHOOSE;
     PACMFILTERCHOOSE = ^tACMFILTERCHOOSE;
     LPACMFILTERCHOOSE = ^tACMFILTERCHOOSE;

//
//  ACMFILTERCHOOSE.fdwStyle
//
const
      ACMFILTERCHOOSE_STYLEF_SHOWHELP              = $00000004;
      ACMFILTERCHOOSE_STYLEF_ENABLEHOOK            = $00000008;
      ACMFILTERCHOOSE_STYLEF_ENABLETEMPLATE        = $00000010;
      ACMFILTERCHOOSE_STYLEF_ENABLETEMPLATEHANDLE  = $00000020;
      ACMFILTERCHOOSE_STYLEF_INITTOFILTERSTRUCT    = $00000040;
      ACMFILTERCHOOSE_STYLEF_CONTEXTHELP           = $00000080;

function acmFilterChoose(pafltrc:LPACMFILTERCHOOSE):MMRESULT; external KernelDLL name 'acmFilterChoose'; // index 2A8

//--------------------------------------------------------------------------;
//
//  ACM Stream API's
//
//--------------------------------------------------------------------------;

//- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ;
//
//  acmStreamOpen()
//
//- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ;
type
     tACMSTREAMHEADER = record
       cbStruct:DWORD;               // sizeof(ACMSTREAMHEADER)
       fdwStatus:DWORD;              // ACMSTREAMHEADER_STATUSF_*
       dwUser:DWORD;                 // user instance data for hdr
       pbSrc:LPBYTE;
       cbSrcLength:DWORD;
       cbSrcLengthUsed:DWORD;
       dwSrcUser:DWORD;              // user instance data for src
       pbDst:LPBYTE;
       cbDstLength:DWORD;
       cbDstLengthUsed:DWORD;
       dwDstUser:DWORD;              // user instance data for dst
       dwReservedDriver:array[0..9] of DWORD;   // driver reserved work space
     end;
     ACMSTREAMHEADER = tACMSTREAMHEADER;
     PACMSTREAMHEADER = ^tACMSTREAMHEADER;
     LPACMSTREAMHEADER = ^tACMSTREAMHEADER;

//
//  ACMSTREAMHEADER.fdwStatus
//
//  ACMSTREAMHEADER_STATUSF_DONE: done bit for async conversions.
//
const
      ACMSTREAMHEADER_STATUSF_DONE        = $00010000;
      ACMSTREAMHEADER_STATUSF_PREPARED    = $00020000;
      ACMSTREAMHEADER_STATUSF_INQUEUE     = $00100000;

function acmStreamOpen(phas:LPHACMSTREAM;       // pointer to stream handle
                       had:HACMDRIVER;        // optional driver handle
                       pwfxSrc:LPWAVEFORMATEX;    // source format to convert
                       pwfxDst:LPWAVEFORMATEX;    // required destination format
                       pwfltr:LPWAVEFILTER;     // optional filter
                       dwCallback:DWORD; // callback
                       dwInstance:DWORD; // callback instance data
                       fdwOpen:DWORD     // ACM_STREAMOPENF_* and CALLBACK_*
                      ):MMRESULT; external KernelDLL name 'acmStreamOpen'; // index 2A0

const
      ACM_STREAMOPENF_QUERY           = $00000001;
      ACM_STREAMOPENF_ASYNC           = $00000002;
      ACM_STREAMOPENF_NONREALTIME     = $00000004;

//- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ;
//
//  acmStreamClose()
//
//- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ;
function acmStreamClose(has:HACMSTREAM;
                        fdwClose:DWORD):MMRESULT; external KernelDLL name 'acmStreamClose'; // index 29D

//- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ;
//
//  acmStreamSize()
//
//- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ;
function acmStreamSize(has:HACMSTREAM;
                       cbInput:DWORD;
                       pdwOutputBytes:LPDWORD;
                       fdwSize:DWORD):MMRESULT; external KernelDLL name 'acmStreamSize'; // index 2A3

const
      ACM_STREAMSIZEF_SOURCE          = $00000000;
      ACM_STREAMSIZEF_DESTINATION     = $00000001;
      ACM_STREAMSIZEF_QUERYMASK       = $0000000F;


//- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ;
//
//  acmStreamReset()
//
//- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ;
function acmStreamReset(has:HACMSTREAM;
                        fdwReset:DWORD):MMRESULT; external KernelDLL name 'acmStreamReset'; // index 2A2

//- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ;
//
//  acmStreamMessage()
//
//- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ;
function acmStreamMessage(has:HACMSTREAM;
                          uMsg:UINT;
                          lParam1:LPARAM;
                          lParam2:LPARAM):MMRESULT; external KernelDLL name 'acmStreamMessage'; // index 29F

//- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ;
//
//  acmStreamConvert()
//
//- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ;
function acmStreamConvert(has:HACMSTREAM;
                          pash:LPACMSTREAMHEADER;
                          fdwConvert:DWORD):MMRESULT; external KernelDLL name 'acmStreamConvert'; // index 29E

const                          
      ACM_STREAMCONVERTF_BLOCKALIGN   = $00000004;
      ACM_STREAMCONVERTF_START        = $00000010;
      ACM_STREAMCONVERTF_END          = $00000020;

//- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ;
//
//  acmStreamPrepareHeader()
//
//- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ;
function acmStreamPrepareHeader(has:HACMSTREAM;
                                pash:LPACMSTREAMHEADER;
                                fdwPrepare:DWORD):MMRESULT; external KernelDLL name 'acmStreamPrepareHeader'; // index 2A1

//- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ;
//
//  acmStreamUnprepareHeader()
//
//- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ;
function acmStreamUnprepareHeader(has:HACMSTREAM;
                                  pash:LPACMSTREAMHEADER;
                                  fdwUnprepare:DWORD):MMRESULT; external KernelDLL name 'acmStreamUnprepareHeader'; // index 2A4

{$PACKRECORDS DEFAULT} // #pragma pack()          /* Revert to default packing */



// Module: msacmdlg.h

// -----------------------------------------------------------------------------
//
//  Audio Compression Manager Common Dialogs Identifiers
//
// -----------------------------------------------------------------------------
const
      DLG_ACMFORMATCHOOSE_ID              = 70;
      IDD_ACMFORMATCHOOSE_CMB_FORMATTAG   = 101;
      IDD_ACMFORMATCHOOSE_CMB_FORMAT      = 102;

      DLG_ACMFILTERCHOOSE_ID              = 71;
      IDD_ACMFILTERCHOOSE_CMB_FILTERTAG   = 101;
      IDD_ACMFILTERCHOOSE_CMB_FILTER      = 102;

// End of module msacmdlg.h

implementation

// - Module: msacmdrv.h
// -----------------------------------------------------------------------------
//
//  Audio Compression Manager Public Header File for Drivers
//
// -----------------------------------------------------------------------------
function MAKE_ACM_VERSION(mjr:byte; mnr:byte; bld:word):DWORD; inline;
begin
  MAKE_ACM_VERSION:=(DWORD(mjr) shl 24) or (DWORD(mnr) shl 16) or bld;
end;
// - End of module: msacmdrv.h

end.