rmaclsnk.pas

Delphi源码REAlRMSDK.rar

unit RmaClSnk;

interface

uses
  PnTypes;

//***************************************************************************
//
//  $Id: rmaclsnk.h,v 1.12 1999/01/29 18:32:11 hboone Exp $
//
//  Copyright (C) 1995-1999 RealNetworks, Inc. All rights reserved.
//
//  http://www.real.com/devzone
//
//  This program contains proprietary
//  information of Progressive Networks, Inc, and is licensed
//  subject to restrictions on use and distribution.
//
//
//  Client Advise Sink Interfaces
//
//

//***************************************************************************
//
//  Interface:
//
//	IRMAClientAdviseSink
//
//  Purpose:
//
//	Interface supplied by client to core to receive notifications of
//	status changes.
//
//  IID_IRMAClientAdviseSink:
//
//	{00000B00-0901-11d1-8B06-00A024406D59}
//
//

const
  IID_IRMAClientAdviseSink: TGUID = '{00000B00-0901-11d1-8B06-00A024406D59}';
  {$EXTERNALSYM IID_IRMAClientAdviseSink}

type
  IRMAClientAdviseSink = interface (IUnknown)
  ['{00000B00-0901-11d1-8B06-00A024406D59}']

    //***********************************************************************
    //	Method:
    //	    IRMAClientAdviseSink::OnPosLength
    //	Purpose:
    //	    Called to advise the client that the position or length of the
    //	    current playback context has changed.
    //

    function OnPosLength(ulPosition, ulLength: UINT32): HRESULT; stdcall;

    //***********************************************************************
    //	Method:
    //	    IRMAClientAdviseSink::OnPresentationOpened
    //	Purpose:
    //	    Called to advise the client a presentation has been opened.
    //

    function OnPresentationOpened: HRESULT; stdcall;

    //***********************************************************************
    //	Method:
    //	    IRMAClientAdviseSink::OnPresentationClosed
    //	Purpose:
    //	    Called to advise the client a presentation has been closed.
    //

    function OnPresentationClosed: HRESULT; stdcall;

    //***********************************************************************
    //	Method:
    //	    IRMAClientAdviseSink::OnStatisticsChanged
    //	Purpose:
    //	    Called to advise the client that the presentation statistics
    //	    have changed.
    //

    function OnStatisticsChanged: HRESULT; stdcall;

    //***********************************************************************
    //	Method:
    //	    IRMAClientAdviseSink::OnPreSeek
    //	Purpose:
    //	    Called by client engine to inform the client that a seek is
    //	    about to occur. The render is informed the last time for the
    //	    stream's time line before the seek, as well as the first new
    //	    time for the stream's time line after the seek will be completed.
    //
    //

    function OnPreSeek(ulOldTime, ulNewTime: ULONG32): HRESULT; stdcall;

    //***********************************************************************
    //	Method:
    //	    IRMAClientAdviseSink::OnPostSeek
    //	Purpose:
    //	    Called by client engine to inform the client that a seek has
    //	    just occurred. The render is informed the last time for the
    //	    stream's time line before the seek, as well as the first new
    //	    time for the stream's time line after the seek.
    //
    //

    function OnPostSeek(ulOldTime, ulNewTime: ULONG32): HRESULT; stdcall;

    //***********************************************************************
    //	Method:
    //	    IRMAClientAdviseSink::OnStop
    //	Purpose:
    //	    Called by client engine to inform the client that a stop has
    //	    just occurred.
    //
    //

    function OnStop: HRESULT; stdcall;

    //***********************************************************************
    //	Method:
    //	    IRMAClientAdviseSink::OnPause
    //	Purpose:
    //	    Called by client engine to inform the client that a pause has
    //	    just occurred. The render is informed the last time for the
    //	    stream's time line before the pause.
    //
    //

    function OnPause(ulTime: ULONG32): HRESULT; stdcall;

    //***********************************************************************
    //	Method:
    //	    IRMAClientAdviseSink::OnBegin
    //	Purpose:
    //	    Called by client engine to inform the client that a begin or
    //	    resume has just occurred. The render is informed the first time
    //	    for the stream's time line after the resume.
    //
    //

    function OnBegin(ulTime: ULONG32): HRESULT; stdcall;

    //***********************************************************************
    //	Method:
    //	    IRMAClientAdviseSink::OnBuffering
    //	Purpose:
    //	    Called by client engine to inform the client that buffering
    //	    of data is occuring. The render is informed of the reason for
    //	    the buffering (start-up of stream, seek has occurred, network
    //	    congestion, etc.), as well as percentage complete of the
    //	    buffering process.
    //
    //

    function OnBuffering(ulFlags: ULONG32; unPercentComplete: UINT16): HRESULT; stdcall;

    //***********************************************************************
    //	Method:
    //	    IRMAClientAdviseSink::OnContacting
    //	Purpose:
    //	    Called by client engine to inform the client is contacting
    //	    hosts(s).
    //
    //

    function OnContacting(pHostName: PChar): HRESULT; stdcall;
    
  end;
  {$EXTERNALSYM IRMAClientAdviseSink}

implementation

end.