{========================================================================}
{=                (c) 1995-98 SwiftSoft Ronald Dittrich                 =}
{========================================================================}
{=                          All Rights Reserved                         =}
{========================================================================}
{=  D 01099 Dresden             = Tel.: +0351-8012255                   =}
{=  Loewenstr.7a                = info@swiftsoft.de                     =}
{========================================================================}
{=  Actual versions on http://www.swiftsoft.de/mmtools.html             =}
{========================================================================}
{=  This code is for reference purposes only and may not be copied or   =}
{=  distributed in any format electronic or otherwise except one copy   =}
{=  for backup purposes.                                                =}
{=                                                                      =}
{=  No Delphi Component Kit or Component individually or in a collection=}
{=  subclassed or otherwise from the code in this unit, or associated   =}
{=  .pas, .dfm, .dcu, .asm or .obj files may be sold or distributed     =}
{=  without express permission from SwiftSoft.                          =}
{=                                                                      =}
{=  For more licence informations please refer to the associated        =}
{=  HelpFile.                                                           =}
{========================================================================}
{=  $Date: 20.01.1998 - 18:00:00 $                                      =}
{========================================================================}
unit MMACMSup;

{$I COMPILER.INC}

interface

uses
{$IFDEF WIN32}
    Windows,
{$ELSE}
    WinTypes,
    WinProcs,
{$ENDIF}
    SysUtils,
    Classes,

    Forms,

    MMSystem,
    MMUtils,
    MMRegs,
    MMACM;

type
   PACMStream  = ^TACMStream;
   TACMStream  = record
     lpSrcBuffer    : PChar;
     lpDstBuffer    : PChar;
     dwSrcBufferSize: Longint;
     dwDstBufferSize: Longint;
     dwRemaining    : Longint;
     acmStream      : THACMSTREAM;
     acmStreamHeader: TACMStreamHeader;
   end;

   PACMConvert = ^TACMConvert;
   TACMConvert = record
      lpSrcBuffer      : PChar;
      lpDstBuffer      : PChar;
      dwSrcBufferSize  : Longint;
      dwDstBufferSize  : Longint;
      dwBytesConverted : Longint;
      dwBytesRead      : Longint;
      bPending         : Boolean;
      bFreeSrcBuffer   : Boolean;
      Streams          : TList;
   end;

{ a set of low level conversion routines to convert WaveFormat's }
function  acmMustConvert(pwfxSrc,pwfxDst: PWaveFormatEx): Boolean;
function  acmQueryConvert(pwfxSrc,pwfxDst: PWaveFormatEx; RealTime: Boolean): Boolean;
function  acmSuggestPCMFormat(pwfxSrc: PWaveFormatEx): TWaveFormatEx;
function  acmSizeOutputData(pwfxSrc,pwfxDst: PWaveFormatEx; SrcBufSize: Longint): Longint;
function  acmBeginConvert(pwfxSrc,pwfxDst: PWaveFormatEx;
                          SrcBuffer: PChar; SrcBufSize: Longint; RealTime: Boolean): PACMConvert;
function  acmDoConvert(pConvert: PACMConvert; SrcBufSize: Longint): Longint;
function  acmEndConvert(pConvert: PACMConvert; SrcBufSize: Longint): Longint;
procedure acmDoneConvert(var pConvert: PACMConvert);

implementation