typedef struct _DMUS_TRANSPOSE_PMSG
{
    /* begin DMUS_PMSG_PART */
    DMUS_PMSG_PART
    /* end DMUS_PMSG_PART */

    short   nTranspose;
    /* Following exists only under DX8 and on (check dwFlags for DMUS_PMSGF_DX8) */
    WORD            wMergeIndex;     /* Allows multiple parameters to be merged (pitchbend, volume, and expression.)*/
} DMUS_TRANSPOSE_PMSG;

/* DMUS_CHANNEL_PRIORITY_PMSG */
typedef struct _DMUS_CHANNEL_PRIORITY_PMSG
{
    /* begin DMUS_PMSG_PART */
    DMUS_PMSG_PART
    /* end DMUS_PMSG_PART */

    DWORD   dwChannelPriority;
} DMUS_CHANNEL_PRIORITY_PMSG;

/* DMUS_TEMPO_PMSG */
typedef struct _DMUS_TEMPO_PMSG
{
    /* begin DMUS_PMSG_PART */
    DMUS_PMSG_PART
    /* end DMUS_PMSG_PART */

    double  dblTempo;                       /* the tempo */
} DMUS_TEMPO_PMSG;

#define DMUS_TEMPO_MAX          1000
#define DMUS_TEMPO_MIN          1

#define DMUS_MASTERTEMPO_MAX    100.0f
#define DMUS_MASTERTEMPO_MIN    0.01f

/* DMUS_SYSEX_PMSG */
typedef struct _DMUS_SYSEX_PMSG
{
    /* begin DMUS_PMSG_PART */
    DMUS_PMSG_PART
    /* end DMUS_PMSG_PART */

    DWORD   dwLen;          /* length of the data */
    BYTE    abData[1];      /* array of data, length equal to dwLen */
} DMUS_SYSEX_PMSG;

/* DMUS_CURVE_PMSG */
typedef struct _DMUS_CURVE_PMSG
{
    /* begin DMUS_PMSG_PART */
    DMUS_PMSG_PART
    /* end DMUS_PMSG_PART */

    MUSIC_TIME      mtDuration;      /* how long this curve lasts */
    MUSIC_TIME      mtOriginalStart; /* must be set to either zero when this PMSG is created or to the original mtTime of the curve */
    MUSIC_TIME      mtResetDuration; /* how long after the curve is finished to allow a flush or
                                        invalidation to reset to the reset value, nResetValue */
    short           nStartValue;     /* curve's start value */
    short           nEndValue;       /* curve's end value */
    short           nResetValue;     /* curve's reset value, set when a flush or invalidation
                                        occurs within mtDuration + mtResetDuration */
    WORD            wMeasure;        /* Measure in which this curve occurs */
    short           nOffset;         /* Offset from grid at which this curve occurs */
    BYTE            bBeat;           /* Beat (in measure) at which this curve occurs */
    BYTE            bGrid;           /* Grid offset from beat at which this curve occurs */
    BYTE            bType;           /* type of curve */
    BYTE            bCurveShape;     /* shape of curve */
    BYTE            bCCData;         /* CC# if this is a control change type */
    BYTE            bFlags;          /* Curve reset and start from current value flags. */
    /* Following exists only under DX8 and on (check dwFlags for DMUS_PMSGF_DX8) */
    WORD            wParamType;      /* RPN or NRPN parameter number. */
    WORD            wMergeIndex;     /* Allows multiple parameters to be merged (pitchbend, volume, and expression.)*/
} DMUS_CURVE_PMSG;

typedef enum enumDMUS_CURVE_FLAGS
{
    DMUS_CURVE_RESET = 1,            /* When set, the nResetValue must be sent when the 
                                        time is reached or an invalidate occurs because
                                        of a transition. If not set, the curve stays
                                        permanently stuck at the new value. */
    DMUS_CURVE_START_FROM_CURRENT = 2/* Ignore Start, start the curve at the current value. 
                                        This only works for volume, expression, and pitchbend. */
} DMUS_CURVE_FLAGS;


#define DMUS_CURVE_RESET    1        

/* Curve shapes */
enum
{ 
    DMUS_CURVES_LINEAR  = 0,
    DMUS_CURVES_INSTANT = 1,
    DMUS_CURVES_EXP     = 2,
    DMUS_CURVES_LOG     = 3,
    DMUS_CURVES_SINE    = 4
};
/* curve types */
#define DMUS_CURVET_PBCURVE      0x03   /* Pitch bend curve. */
#define DMUS_CURVET_CCCURVE      0x04   /* Control change curve. */
#define DMUS_CURVET_MATCURVE     0x05   /* Mono aftertouch curve. */
#define DMUS_CURVET_PATCURVE     0x06   /* Poly aftertouch curve. */
#define DMUS_CURVET_RPNCURVE     0x07   /* RPN curve with curve type in wParamType. */
#define DMUS_CURVET_NRPNCURVE    0x08   /* NRPN curve with curve type in wParamType. */

/* DMUS_TIMESIG_PMSG */
typedef struct _DMUS_TIMESIG_PMSG
{
    /* begin DMUS_PMSG_PART */
    DMUS_PMSG_PART
    /* end DMUS_PMSG_PART */

    /* Time signatures define how many beats per measure, which note receives */
    /* the beat, and the grid resolution. */
    BYTE    bBeatsPerMeasure;       /* beats per measure (top of time sig) */
    BYTE    bBeat;                  /* what note receives the beat (bottom of time sig.) */
                                    /* we can assume that 0 means 256th note */
    WORD    wGridsPerBeat;          /* grids per beat */
} DMUS_TIMESIG_PMSG;



/* notification type values */
/* The following correspond to GUID_NOTIFICATION_SEGMENT */
#define DMUS_NOTIFICATION_SEGSTART       0
#define DMUS_NOTIFICATION_SEGEND         1
#define DMUS_NOTIFICATION_SEGALMOSTEND   2
#define DMUS_NOTIFICATION_SEGLOOP        3
#define DMUS_NOTIFICATION_SEGABORT       4
/* The following correspond to GUID_NOTIFICATION_PERFORMANCE */
#define DMUS_NOTIFICATION_MUSICSTARTED   0
#define DMUS_NOTIFICATION_MUSICSTOPPED   1
#define DMUS_NOTIFICATION_MUSICALMOSTEND 2
/* The following corresponds to GUID_NOTIFICATION_MEASUREANDBEAT */
#define DMUS_NOTIFICATION_MEASUREBEAT    0
/* The following corresponds to GUID_NOTIFICATION_CHORD */
#define DMUS_NOTIFICATION_CHORD          0
/* The following correspond to GUID_NOTIFICATION_COMMAND */
#define DMUS_NOTIFICATION_GROOVE         0
#define DMUS_NOTIFICATION_EMBELLISHMENT  1
/* The following corresponds to GUID_NOTIFICATION_RECOMPOSE */
#define DMUS_NOTIFICATION_RECOMPOSE          0

/* DMUS_NOTIFICATION_PMSG */
typedef struct _DMUS_NOTIFICATION_PMSG
{
    /* begin DMUS_PMSG_PART */
    DMUS_PMSG_PART
    /* end DMUS_PMSG_PART */

    GUID    guidNotificationType;
    DWORD   dwNotificationOption;
    DWORD   dwField1;
    DWORD   dwField2;
} DMUS_NOTIFICATION_PMSG;

/* DMUS_WAVE_PMSG */
typedef struct _DMUS_WAVE_PMSG
{
    /* begin DMUS_PMSG_PART */
    DMUS_PMSG_PART
    /* end DMUS_PMSG_PART */
    
    REFERENCE_TIME rtStartOffset;   /* How far into the wave to start, in reference time units only. */
    REFERENCE_TIME rtDuration;      /* Duration of the wave, in either reference time or music time. */  
    long    lOffset;                /* Offset from actual time to logical time, in music or ref time. */
    long    lVolume;		        /* Initial volume, in 100ths of a dB. */
    long    lPitch;			        /* Initial pitch, in 100ths of a semitone. */
    BYTE    bFlags;                 /* Flags, including DMUS_WAVEF_OFF... */
} DMUS_WAVE_PMSG;

#define DMUS_WAVEF_OFF           1       /* If wave is playing and this is the off message. */
#define DMUS_WAVEF_STREAMING     2       /* If wave is streaming. */
#define DMUS_WAVEF_NOINVALIDATE  4       /* Don't invalidate this wave. */
#define DMUS_WAVEF_NOPREROLL     8       /* Don't preroll any wave data. */   

/* DMUS_LYRIC_PMSG */
typedef struct _DMUS_LYRIC_PMSG
{
    /* begin DMUS_PMSG_PART */
    DMUS_PMSG_PART
    /* end DMUS_PMSG_PART */
    
    WCHAR    wszString[1];      /* null-terminated Unicode lyric string (structure is actually larger than size 1) */
} DMUS_LYRIC_PMSG;

#define DMUS_MAX_NAME           64         /* Maximum object name length. */
#define DMUS_MAX_CATEGORY       64         /* Maximum object category name length. */
#define DMUS_MAX_FILENAME       MAX_PATH

typedef struct _DMUS_VERSION {
  DWORD    dwVersionMS;
  DWORD    dwVersionLS;
}DMUS_VERSION, FAR *LPDMUS_VERSION;

/* Time Signature structure, used by IDirectMusicStyle */
/* Also used as a parameter for GetParam() and SetParam */
typedef struct _DMUS_TIMESIGNATURE
{
    MUSIC_TIME mtTime;
    BYTE    bBeatsPerMeasure;       /* beats per measure (top of time sig) */
    BYTE    bBeat;                  /* what note receives the beat (bottom of time sig.) */
                                    /* we can assume that 0 means 256th note */
    WORD    wGridsPerBeat;          /* grids per beat */
} DMUS_TIMESIGNATURE;

typedef struct _DMUS_VALID_START_PARAM
{
    MUSIC_TIME mtTime;                      /* Time of the first legal start 
                                               point after (or including) the requested time. 
                                               This is a returned value.
                                               Time format is the relative offset from requested time. */
} DMUS_VALID_START_PARAM;

typedef struct _DMUS_PLAY_MARKER_PARAM
{
    MUSIC_TIME mtTime;                      /* Time of the first legal segment play 
                                               marker before (or including) the requested time. 
                                               This is a returned value.
                                               Time format is the relative offset from requested time. */
} DMUS_PLAY_MARKER_PARAM;

/*      The DMUSOBJECTDESC structure is used to communicate everything you could */
/*      possibly use to describe a DirectMusic object.  */

typedef struct _DMUS_OBJECTDESC
{
    DWORD          dwSize;                 /* Size of this structure. */
    DWORD          dwValidData;            /* Flags indicating which fields below are valid. */
    GUID           guidObject;             /* Unique ID for this object. */
    GUID           guidClass;              /* GUID for the class of object. */
    FILETIME       ftDate;                 /* Last edited date of object. */
    DMUS_VERSION   vVersion;               /* Version. */
    WCHAR          wszName[DMUS_MAX_NAME]; /* Name of object. */
    WCHAR          wszCategory[DMUS_MAX_CATEGORY]; /* Category for object (optional). */
    WCHAR          wszFileName[DMUS_MAX_FILENAME]; /* File path. */
    LONGLONG       llMemLength;            /* Size of Memory data. */
    LPBYTE         pbMemData;              /* Memory pointer for data. */
    IStream *      pStream;                /* Stream with data. */
} DMUS_OBJECTDESC;

typedef DMUS_OBJECTDESC *LPDMUS_OBJECTDESC;

/*      Flags for dwValidData. When set, a flag indicates that the  */