RealICQClient/Includes/2007_MMTools/Help/Doc/WAVE/MMADPCM.PAS

{========================================================================}
{=                (c) 1995-98 SwiftSoft Ronald Dittrich                 =}
{========================================================================}
{=                          All Rights Reserved                         =}
{========================================================================}
{=  D 01099 Dresden             = Fax.: +49 (0)351-8037944              =}
{=  Loewenstr.7a                = info@swiftsoft.de                     =}
{========================================================================}
{=  Actual versions on http://www.swiftsoft.de/mmtools.html             =}
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{=  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: 09.03.98 - 23:33:29 $                                        =}
{========================================================================}
unit MMADPCM;

{$I COMPILER.INC}

interface

uses
    {$IFDEF WIN32}
    Windows,
    {$ELSE}
    WinProcs,
    WinTypes,
    {$ENDIF}
    SysUtils,
    MMSystem,
    MMObj,
    MMUtils,
    MMMulDiv,
    MMRegs,
    MMPCMSup;


function adpcmDecode4Bit(lpwfADPCM: PADPCMWaveFormat; lpwfPCM: PPCMWaveFormat; pSrc, pDst: PChar; dwSrcLen: DWORD): DWORD;
function adpcmEncode4Bit(lpwfPCM: PPCMWaveFormat; lpwfADPCM: PADPCMWaveFormat; pSrc, pDst: PChar; dwSrcLen: DWORD): DWORD;
function adpcmIsValidFormat(lpwfx: PWaveFormatEx): Boolean;
function adpcmBuildFormatHeader(lpwfxSrc, lpwfxDst: PWaveFormatEx; PCMBitLength,DestChannels,DestRate: integer): Boolean;

implementation