/************************************************************************
*                                                                       *
*   dmplugin.h -- This module contains the API for plugins for the      *
*                 DirectMusic performance layer                         *
*                                                                       *
*   Copyright (c) 1998-1999 Microsoft Corporation                       *
*                                                                       *
************************************************************************/

#ifndef _DMPLUGIN_
#define _DMPLUGIN_

#include <windows.h>

#define COM_NO_WINDOWS_H
#include <objbase.h>

#include <mmsystem.h>
#include <dmusici.h>

#include <pshpack8.h>

#ifdef __cplusplus
extern "C" {
#endif

interface IDirectMusicTrack;
interface IDirectMusicTool;
interface IDirectMusicTool8;
interface IDirectMusicTrack8;
interface IDirectMusicPerformance;
interface IDirectMusicPerformance8;
interface IDirectMusicSegment;
interface IDirectMusicSegment8;
interface IDirectMusicSegmentState;
interface IDirectMusicSegmentState8;
interface IDirectMusicGraph;
#ifndef __cplusplus 
typedef interface IDirectMusicTrack IDirectMusicTrack;
typedef interface IDirectMusicTool IDirectMusicTool;
typedef interface IDirectMusicTool8 IDirectMusicTool8;
typedef interface IDirectMusicTrack8 IDirectMusicTrack8;
typedef interface IDirectMusicPerformance IDirectMusicPerformance;
typedef interface IDirectMusicPerformance8 IDirectMusicPerformance8;
typedef interface IDirectMusicSegment IDirectMusicSegment;
typedef interface IDirectMusicSegment8 IDirectMusicSegment8;
typedef interface IDirectMusicSegmentState IDirectMusicSegmentState;
typedef interface IDirectMusicSegmentState8 IDirectMusicSegmentState8;
typedef interface IDirectMusicGraph IDirectMusicGraph;
#endif

typedef struct _DMUS_PMSG DMUS_PMSG;
typedef long              MUSIC_TIME;

/* Registry location for tools */
#define DMUS_REGSTR_PATH_TOOLS  "Software\\Microsoft\\DirectMusic\\Tools"

/*////////////////////////////////////////////////////////////////////
// IDirectMusicTool */
#undef  INTERFACE
#define INTERFACE  IDirectMusicTool
DECLARE_INTERFACE_(IDirectMusicTool, IUnknown)
{
    /*  IUnknown */
    STDMETHOD(QueryInterface)       (THIS_ REFIID, LPVOID FAR *) PURE;
    STDMETHOD_(ULONG,AddRef)        (THIS) PURE;
    STDMETHOD_(ULONG,Release)       (THIS) PURE;

    /*  IDirectMusicTool */
    STDMETHOD(Init)                 (THIS_ IDirectMusicGraph* pGraph) PURE;
    STDMETHOD(GetMsgDeliveryType)   (THIS_ DWORD* pdwDeliveryType ) PURE;
    STDMETHOD(GetMediaTypeArraySize)(THIS_ DWORD* pdwNumElements ) PURE;
    STDMETHOD(GetMediaTypes)        (THIS_ DWORD** padwMediaTypes, 
                                           DWORD dwNumElements) PURE;
    STDMETHOD(ProcessPMsg)          (THIS_ IDirectMusicPerformance* pPerf, 
                                           DMUS_PMSG* pPMSG) PURE;
    STDMETHOD(Flush)                (THIS_ IDirectMusicPerformance* pPerf, 
                                           DMUS_PMSG* pPMSG, 
                                           REFERENCE_TIME rtTime) PURE;
};

/*////////////////////////////////////////////////////////////////////
// IDirectMusicTool8 */
#undef  INTERFACE
#define INTERFACE  IDirectMusicTool8
DECLARE_INTERFACE_(IDirectMusicTool8, IDirectMusicTool)
{
    /*  IUnknown */
    STDMETHOD(QueryInterface)       (THIS_ REFIID, LPVOID FAR *) PURE;
    STDMETHOD_(ULONG,AddRef)        (THIS) PURE;
    STDMETHOD_(ULONG,Release)       (THIS) PURE;

    /*  IDirectMusicTool */
    STDMETHOD(Init)                 (THIS_ IDirectMusicGraph* pGraph) PURE;
    STDMETHOD(GetMsgDeliveryType)   (THIS_ DWORD* pdwDeliveryType ) PURE;
    STDMETHOD(GetMediaTypeArraySize)(THIS_ DWORD* pdwNumElements ) PURE;
    STDMETHOD(GetMediaTypes)        (THIS_ DWORD** padwMediaTypes, 
                                           DWORD dwNumElements) PURE;
    STDMETHOD(ProcessPMsg)          (THIS_ IDirectMusicPerformance* pPerf, 
                                           DMUS_PMSG* pPMSG) PURE;
    STDMETHOD(Flush)                (THIS_ IDirectMusicPerformance* pPerf, 
                                           DMUS_PMSG* pPMSG, 
                                           REFERENCE_TIME rtTime) PURE;
    /*  IDirectMusicTool8 */
    STDMETHOD(Clone)                (THIS_ IDirectMusicTool ** ppTool) PURE;
};

 
/* The following flags are sent in the IDirectMusicTrack::Play() method */
/* inside the dwFlags parameter */
typedef enum enumDMUS_TRACKF_FLAGS
{
    DMUS_TRACKF_SEEK            = 1,      /* set on a seek */
    DMUS_TRACKF_LOOP            = 2,      /* set on a loop (repeat) */
    DMUS_TRACKF_START           = 4,      /* set on first call to Play */
    DMUS_TRACKF_FLUSH           = 8,      /* set when this call is in response to a flush on the perfomance */
    DMUS_TRACKF_DIRTY           = 0x10,   /* set when the track should consider any cached values from a previous call to GetParam to be invalidated */
    /* The following flags are DX8 only. */
    DMUS_TRACKF_NOTIFY_OFF      = 0x20,   /* tells track not to send notifications. */
    DMUS_TRACKF_PLAY_OFF        = 0x40,   /* tells track not to play anything (but can still send notifications.) */
    DMUS_TRACKF_LOOPEND         = 0x80,   /* set when the end of range is also a loop end. */
    DMUS_TRACKF_STOP            = 0x100,  /* set when the end of range is also end of playing this segment. */
    DMUS_TRACKF_RECOMPOSE       = 0x200,  /* set to indicate the track should compose. */
    DMUS_TRACKF_CLOCK           = 0x400,  /* set when time parameters are in reference (clock) time. Only valid for PlayEx(). */
} DMUS_TRACKF_FLAGS;

/* The following flags are sent in the IDirectMusicTrack8::GetParamEx() and SetParamEx() methods */
/* inside the dwFlags parameter */
#define DMUS_TRACK_PARAMF_CLOCK  0x01       /* set when the time is measured is in reference (clock) time */

/*////////////////////////////////////////////////////////////////////
// IDirectMusicTrack */
#undef  INTERFACE
#define INTERFACE  IDirectMusicTrack
DECLARE_INTERFACE_(IDirectMusicTrack, IUnknown)
{
    /*  IUnknown */
    STDMETHOD(QueryInterface)         (THIS_ REFIID, LPVOID FAR *) PURE;
    STDMETHOD_(ULONG,AddRef)          (THIS) PURE;
    STDMETHOD_(ULONG,Release)         (THIS) PURE;