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Multimedia Module 1.0. A module with all the basic sub-routines and functions required to interface

Multimedia Module 1.0. A module with all the basic sub-routines and functions required to interface with MCI in order to play all kinds of

API Declarations


'by Buttress Root Software
'
'Programmed by Jonathan Liu
'Copyright ©1999-2371 Buttress Root Software. All rights reserved.

Option Explicit
Private Declare Function GetShortPathName Lib "kernel32" _
Alias "GetShortPathNameA" (ByVal lpszLongPath As String, _
ByVal lpszShortPath As String, ByVal cchBuffer As Long) As Long
Private Declare Function mciSendString Lib "winmm.dll" _
Alias "mciSendStringA" (ByVal lpstrCommand As String, _
ByVal lpstrReturnString As String, ByVal uReturnLength As Long, _
ByVal hwndCallback As Long) As Long
Private blnReturnSeekingStatus As Boolean
Private strStatus As String
Private mmAliases() As mmAlias
Public Const MM_ALIAS_ALREADY_EXISTS = 289
Public Const MM_ALIAS_NOT_EXIST = 263
Public Const MM_PAUSE_FAILED = 302
Public Const MM_PAUSE_FAILED_NOT_PLAYING = 302
Public Const MM_PAUSE_FAILED_NOT_EXIST = 263
Public Const MM_STOP_FAILED = 263
Public Const MM_INVALID_MULTIMEDIA = "invalid_multimedia"
Public Const MM_COMMAND_SUCCESSFUL = 0
Public Const MM_COMMAND_FAILED = 263

Private Type mmAlias
Alias As String
FileName As String
Handle As Long
End Type

Private Type mmRawID3Tags
Tag As String * 3
SongName As String * 30
Artist As String * 30
Album As String * 30
Year As String * 4
Comment As String * 30
Genre As String * 1
End Type

Public Type mmID3Tags
Tag As String
SongName As String
Artist As String
Album As String
Year As String
Comment As String
Genre As String
End Type



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Function mmCreateAlias(ByVal strFileName As String, _
    ByVal strAlias As String, Optional ByVal lngHandle As Long) As Long
Dim lngIgnore As Long
Dim lngReturn As Long
Dim strReturn As String
Dim strShortPath As String

strShortPath = Space$(255)
strReturn = Space$(255)
lngReturn = GetShortPathName(strFileName, strShortPath, 255)
strShortPath = Left(strShortPath, lngReturn)

lngReturn = mciSendString("open " & strShortPath & " alias " & _
    strAlias, strReturn, 255, 0)

If lngHandle > 0 Then _
    lngIgnore = mciSendString("window " & strAlias & " handle " & _
        CStr(lngHandle), strReturn, 255, 0)

Select Case lngReturn
    Case MM_COMMAND_SUCCESSFUL
        mmAddEntry strFileName, strAlias, lngHandle
        strStatus = "Alias was created successfully"
    Case MM_ALIAS_ALREADY_EXISTS
        strStatus = "Alias already exists"
End Select

mmCreateAlias = lngReturn
End Function

Function mmDestroyAlias(ByVal strAlias As String) As Long
Dim lngReturn As Long
Dim strReturn As String
Dim i As Single

strReturn = Space$(255)
lngReturn = mciSendString("close " & strAlias, strReturn, 255, 0)

Select Case lngReturn
    Case MM_COMMAND_SUCCESSFUL
        mmRemoveEntry strAlias
        strStatus = "Alias was destroyed successfully"
    Case MM_ALIAS_NOT_EXIST
        strStatus = "Alias doesn't exist"
End Select

mmDestroyAlias = lngReturn
End Function

Function mmPlay(ByVal strMultimedia As String) As Long
Dim lngReturn As Long
Dim sngEntry As Single
Dim strReturn As String
Dim strShortPath As String

strShortPath = Space$(255)
strReturn = Space$(255)
lngReturn = GetShortPathName(strMultimedia, strShortPath, 255)
strShortPath = Left(strShortPath, lngReturn)

If strShortPath <> "" Then
    If mmPaused(strShortPath) = False Then _
        lngReturn = mmSeekPosition(strShortPath, 0)
    lngReturn = mciSendString("play " & strShortPath, _
        strReturn, 255, 0)
Else
    strShortPath = strMultimedia
    
    If mmPaused(strShortPath) = False Then _
        lngReturn = mmSeekPosition(strShortPath, 0)
    lngReturn = mciSendString("play " & strShortPath, _
        strReturn, 255, 0)
End If

strStatus = "PlaySound command successful"
mmPlay = lngReturn
End Function

Function mmPause(ByVal strMultimedia As String) As Long
Dim lngReturn As Long
Dim sngEntry As Single
Dim strReturn As String
Dim strShortPath As String

strShortPath = Space$(255)
strReturn = Space$(255)
lngReturn = GetShortPathName(strMultimedia, strShortPath, 255)
strShortPath = Left(strShortPath, lngReturn)
If strShortPath = "" Then strShortPath = strMultimedia
lngReturn = mciSendString("pause " & strShortPath, strReturn, 255, 0)

Select Case lngReturn
    Case MM_COMMAND_SUCCESSFUL
        strStatus = "PauseSound command successful"
    Case MM_PAUSE_FAILED_NOT_PLAYING
        strStatus = "PauseSound can't pause a file that is not playing"
    Case MM_PAUSE_FAILED_NOT_EXIST
        strStatus = "PauseSound can't pause a file that doesn't exist"
    Case MM_PAUSE_FAILED
        strStatus = "PauseSound command failed"
End Select

mmPause = lngReturn
End Function

Function mmStop(ByVal strMultimedia As String) As Long
Dim lngReturn As Long
Dim strReturn As String
Dim strShortPath As String

strShortPath = Space$(255)
strReturn = Space$(255)
lngReturn = GetShortPathName(strMultimedia, strShortPath, 255)
strShortPath = Left(strShortPath, lngReturn)
If strShortPath = "" Then strShortPath = strMultimedia
lngReturn = mciSendString("seek " & strShortPath & " to 0", strReturn, 255, 0)
lngReturn = mciSendString("stop " & strShortPath, strReturn, 255, 0)

Select Case lngReturn
    Case MM_COMMAND_SUCCESSFUL
        strStatus = "StopSound command successful"
    Case MM_STOP_FAILED
        strStatus = "StopSound command failed"
End Select

mmStop = lngReturn
End Function

Function mmSeekPosition(ByVal strMultimedia As String, _
    ByVal sngPosition As Single) As Long
Dim blnPlaying As Boolean
Dim lngReturn As Long
Dim lngHandle As Long
Dim strReturn As String
Dim strFileName As String
Dim i As Single

If mmPlaybackStatus(strMultimedia) = "playing" Then blnPlaying = True
strReturn = Space$(255)
blnReturnSeekingStatus = True

lngReturn = mciSendString("set " & strMultimedia & " time format milliseconds", _
    strReturn, 255, 0)
lngReturn = mciSendString("set " & strMultimedia & " seek exactly on", _
    strReturn, 255, 0)
lngReturn = mciSendString("seek " & strMultimedia & " to " & sngPosition, _
    strReturn, 255, 0)

blnReturnSeekingStatus = False

If blnPlaying = True Then _
    lngReturn = mciSendString("play " & strMultimedia, strReturn, 255, 0)

mmSeekPosition = lngReturn

Select Case lngReturn
    Case MM_COMMAND_SUCCESSFUL
        strStatus = "Seek command successful"
    Case MM_ALIAS_ALREADY_EXISTS
        strStatus = "Seek command failed"
End Select
End Function

Function mmLength(ByVal strMultimedia As String) As Single
Dim lngReturn As Long
Dim strReturn As String

strReturn = Space$(255)
lngReturn = mciSendString("set " & strMultimedia & " time format milliseconds", _
    strReturn, 255, 0)
lngReturn = mciSendString("status " & strMultimedia & " Length", strReturn, 255, 0)

If lngReturn = 0 Then
    mmLength = CSng(strReturn)
Else
    mmLength = -1
End If

Select Case lngReturn
    Case MM_COMMAND_SUCCESSFUL
        strStatus = "Length retreived successfully"
    Case MM_ALIAS_ALREADY_EXISTS
        strStatus = "Length retreival failed"
End Select
End Function

Function mmPosition(ByVal strMultimedia As String) As Single
Dim lngReturn As Long
Dim strReturn As String

strReturn = Space$(255)
lngReturn = mciSendString("set " & strMultimedia & " time format milliseconds", _
    strReturn, 255, 0)
lngReturn = mciSendString("status " & strMultimedia & " position", strReturn, 255, 0)

If lngReturn = 0 Then
    mmPosition = CSng(strReturn)
Else
    mmPosition = -1
End If

Select Case lngReturn
    Case MM_COMMAND_SUCCESSFUL
        strStatus = "Position retreived successfully"
    Case MM_ALIAS_ALREADY_EXISTS
        strStatus = "Position retreival failed"
End Select
End Function

Function mmPlaybackStatus(ByVal strMultimedia As String) As String
Dim lngReturn As Long
Dim strReturn As String

strReturn = Space$(255)
lngReturn = mciSendString("status " & strMultimedia & " mode", strReturn, 255, 0)

If lngReturn = 0 Then
    strReturn = Left(strReturn, InStr(1, strReturn, Chr(0), vbTextCompare) - 1)
    If blnReturnSeekingStatus = True Then mmPlaybackStatus = "Seeking"
    mmPlaybackStatus = strReturn
Else
    mmPlaybackStatus = "invalid_multimedia"
End If

Select Case lngReturn
    Case MM_COMMAND_SUCCESSFUL
        strStatus = "Position retreived successfully"
    Case MM_ALIAS_ALREADY_EXISTS
        strStatus = "Position retreival failed"
End Select
End Function

Function mmPaused(ByVal strMultimedia As String) As Boolean
Dim strStatus As String

strStatus = mmPlaybackStatus(strMultimedia)
If strStatus = "paused" Or strStatus = "stopped" Then mmPaused = True
End Function

Function mmContainsVideo(ByVal strMultimedia As String) As Boolean
mmContainsVideo = True
If mmVideoHeight(strMultimedia) + mmVideoWidth(strMultimedia) = 0 Then _
    mmContainsVideo = False
End Function

Function mmVideoHeight(ByVal strMultimedia As String) As Single
Dim strValues() As String
Dim lngReturn As Long
Dim strReturn As String

strReturn = Space$(255)
lngReturn = mciSendString("where " & strMultimedia & " destination", _
    strReturn, 255, 0)
strValues = Split(strReturn, Chr(32), -1, vbTextCompare)
If UBound(strValues) >= 3 Then mmVideoHeight = strValues(3)
End Function

Function mmVideoWidth(ByVal strMultimedia As String) As Single
Dim strValues() As String
Dim lngReturn As Long
Dim strReturn As String

strReturn = Space$(255)
lngReturn = mciSendString("where " & strMultimedia & " destination", _
    strReturn, 255, 0)
strValues = Split(strReturn, Chr(32), -1, vbTextCompare)
If UBound(strValues) >= 2 Then mmVideoWidth = strValues(2)
End Function

Function mmContainsID3Tags(strMultimedia As String) As Boolean
Dim intFreeFile As Integer
Dim strFileName As String
Dim strTag As String

strFileName = mmGetFileName(strMultimedia)
If strFileName = "" Then Exit Function
If LOF(strFileName) < 128 Then Exit Function
strTag = Space$(3)
intFreeFile = FreeFile()

Open strFileName For Binary As #intFreeFile
Get #intFreeFile, LOF(intFreeFile) - 127, strTag
Close #intFreeFile

If strTag = "TAG" Then mmContainsID3Tags = True
End Function

Function mmGetID3Tags(ByVal strMultimedia As String) As mmID3Tags
Dim intFreeFile As Integer
Dim strFileName As String
Dim RawTags As mmRawID3Tags

strFileName = mmGetFileName(strMultimedia)
If strFileName = "" Then Exit Function
If LOF(strFileName) < 128 Then Exit Function
intFreeFile = FreeFile()

Open strFileName For Binary As #intFreeFile
With RawTags
    Get #intFreeFile, LOF(intFreeFile) - 127, .Tag
    
    If .Tag <> "TAG" Then
        Close #intFreeFile
        Exit Function
    End If
    
    Get #intFreeFile, , .SongName
    Get #intFreeFile, , .Artist
    Get #intFreeFile, , .Album
    Get #intFreeFile, , .Year
    Get #intFreeFile, , .Comment
    Get #intFreeFile, , .Genre
End With

With mmGetID3Tags
    .Tag = RTrim$(RawTags.Tag)
    .SongName = RTrim$(RawTags.SongName)
    .Artist = RTrim$(RawTags.Artist)
    .Album = RTrim$(RawTags.Album)
    .Year = RTrim$(RawTags.Year)
    .Comment = RTrim$(RawTags.Comment)
    .Genre = mmGetID3TagGenre(Asc(RTrim$(RawTags.Genre)))
End With
Close #intFreeFile
End Function

Function mmGetID3TagGenre(ByVal intGenreCode As Integer) As String
Select Case intGenreCode
    Case 0
        mmGetID3TagGenre = "Blues"
    Case 1
        mmGetID3TagGenre = "Classic Rock"
    Case 2
        mmGetID3TagGenre = "Country"
    Case 3
        mmGetID3TagGenre = "Dance"
    Case 4
        mmGetID3TagGenre = "Disco"
    Case 5
        mmGetID3TagGenre = "Funk"
    Case 6
        mmGetID3TagGenre = "Grunge"
    Case 7
        mmGetID3TagGenre = "Hip-Hop"
    Case 8
        mmGetID3TagGenre = "Jazz"
    Case 9
        mmGetID3TagGenre = "Metal"
    Case 10
        mmGetID3TagGenre = "New Age"
    Case 11
        mmGetID3TagGenre = "Oldies"
    Case 12
        mmGetID3TagGenre = "Other"
    Case 13
        mmGetID3TagGenre = "Pop"
    Case 14
        mmGetID3TagGenre = "R&B"
    Case 15
        mmGetID3TagGenre = "Rap"
    Case 16
        mmGetID3TagGenre = "Reggae"
    Case 17
        mmGetID3TagGenre = "Rock"
    Case 18
        mmGetID3TagGenre = "Techno"
    Case 19
        mmGetID3TagGenre = "Industrial"
    Case 20
        mmGetID3TagGenre = "Alternative"
    Case 21
        mmGetID3TagGenre = "Ska"
    Case 22
        mmGetID3TagGenre = "Death Metal"
    Case 23
        mmGetID3TagGenre = "Pranks"
    Case 24
        mmGetID3TagGenre = "Soundtrack"
    Case 25
        mmGetID3TagGenre = "Euro-Techno"
    Case 26
        mmGetID3TagGenre = "Ambient"
    Case 27
        mmGetID3TagGenre = "Trip-Hop"
    Case 28
        mmGetID3TagGenre = "Vocal"
    Case 29
        mmGetID3TagGenre = "Jazz+Funk"
    Case 30
        mmGetID3TagGenre = "Fusion"
    Case 31
        mmGetID3TagGenre = "Trance"
    Case 32
        mmGetID3TagGenre = "Classical"
    Case 33
        mmGetID3TagGenre = "Instrumental"
    Case 34
        mmGetID3TagGenre = "Acid"
    Case 35
        mmGetID3TagGenre = "House"
    Case 36
        mmGetID3TagGenre = "Game"
    Case 37
        mmGetID3TagGenre = "Sound Clip"
    Case 38
        mmGetID3TagGenre = "Gospel"
    Case 39
        mmGetID3TagGenre = "Noise"
    Case 40
        mmGetID3TagGenre = "Alternative Rock"
    Case 41
        mmGetID3TagGenre = "Bass"
    Case 42
        mmGetID3TagGenre = "Soul"
    Case 43
        mmGetID3TagGenre = "Punk"
    Case 44
        mmGetID3TagGenre = "Space"
    Case 45
        mmGetID3TagGenre = "Meditative"
    Case 46
        mmGetID3TagGenre = "Instrumental Pop"
    Case 47
        mmGetID3TagGenre = "Instrumental Rock"
    Case 48
        mmGetID3TagGenre = "Ethic"
    Case 49
        mmGetID3TagGenre = "Gothic"
    Case 50
        mmGetID3TagGenre = "Darkwave"
    Case 51
        mmGetID3TagGenre = "Techno-Industrial"
    Case 52
        mmGetID3TagGenre = "Electronic"
    Case 53
        mmGetID3TagGenre = "Pop-Folk"
    Case 54
        mmGetID3TagGenre = "Eurodance"
    Case 55
        mmGetID3TagGenre = "Dream"
    Case 56
        mmGetID3TagGenre = "Southern Rock"
    Case 57
        mmGetID3TagGenre = "Comedy"
    Case 58
        mmGetID3TagGenre = "Cult"
    Case 59
        mmGetID3TagGenre = "Gangsta"
    Case 60
        mmGetID3TagGenre = "Top 40"
    Case 61
        mmGetID3TagGenre = "Christian Rap"
    Case 62
        mmGetID3TagGenre = "Pop/Funk"
    Case 63
        mmGetID3TagGenre = "Jungle"
    Case 64
        mmGetID3TagGenre = "Native US"
    Case 65
        mmGetID3TagGenre = "Cabaret"
    Case 66
        mmGetID3TagGenre = "New Wave"
    Case 67
        mmGetID3TagGenre = "Psychadelic"
    Case 68
        mmGetID3TagGenre = "Rave"
    Case 69
        mmGetID3TagGenre = "Showtunes"
    Case 70
        mmGetID3TagGenre = "Trailer"
    Case 71
        mmGetID3TagGenre = "Lo-Fi"
    Case 72
        mmGetID3TagGenre = "Tribal"
    Case 73
        mmGetID3TagGenre = "Acid Punk"
    Case 74
        mmGetID3TagGenre = "Acid Jazz"
    Case 75
        mmGetID3TagGenre = "Polka"
    Case 76
        mmGetID3TagGenre = "Retro"
    Case 77
        mmGetID3TagGenre = "Musical"
    Case 78
        mmGetID3TagGenre = "Rock & Roll"
    Case 79
        mmGetID3TagGenre = "Hard Rock"
    Case 80
        mmGetID3TagGenre = "Folk"
    Case 81
        mmGetID3TagGenre = "Folk-Rock"
    Case 82
        mmGetID3TagGenre = "National Folk"
    Case 83
        mmGetID3TagGenre = "Swing"
    Case 84
        mmGetID3TagGenre = "Fast Fusion"
    Case 85
        mmGetID3TagGenre = "Bebob"
    Case 86
        mmGetID3TagGenre = "Latin"
    Case 87
        mmGetID3TagGenre = "Revival"
    Case 88
        mmGetID3TagGenre = "Celtic"
    Case 89
        mmGetID3TagGenre = "Bluegrass"
    Case 90
        mmGetID3TagGenre = "Avantgarde"
    Case 91
        mmGetID3TagGenre = "Gothic Rock"
    Case 92
        mmGetID3TagGenre = "Progressive Rock"
    Case 93
        mmGetID3TagGenre = "Psychedelic Rock"
    Case 94
        mmGetID3TagGenre = "Symphonic Rock"
    Case 95
        mmGetID3TagGenre = "Slow Rock"
    Case 96
        mmGetID3TagGenre = "Big Band"
    Case 97
        mmGetID3TagGenre = "Chorus"
    Case 98
        mmGetID3TagGenre = "Easy Listening"
    Case 99
        mmGetID3TagGenre = "Acoustic"
    Case 100
        mmGetID3TagGenre = "Humour"
    Case 101
        mmGetID3TagGenre = "Speech"
    Case 102
        mmGetID3TagGenre = "Chanson"
    Case 103
        mmGetID3TagGenre = "Opera"
    Case 104
        mmGetID3TagGenre = "Chamber Music"
    Case 105
        mmGetID3TagGenre = "Sonata"
    Case 106
        mmGetID3TagGenre = "Symphony"
    Case 107
        mmGetID3TagGenre = "Booty Bass"
    Case 108
        mmGetID3TagGenre = "Primus"
    Case 109
        mmGetID3TagGenre = "Porn Groove"
    Case 110
        mmGetID3TagGenre = "Satire"
    Case 111
        mmGetID3TagGenre = "Slow Jam"
    Case 112
        mmGetID3TagGenre = "Club"
    Case 113
        mmGetID3TagGenre = "Tango"
    Case 114
        mmGetID3TagGenre = "Samba"
    Case 115
        mmGetID3TagGenre = "Folklore"
    Case 116
        mmGetID3TagGenre = "Ballad"
    Case 117
        mmGetID3TagGenre = "Power Ballad"
    Case 118
        mmGetID3TagGenre = "Rhythmic Soul"
    Case 119
        mmGetID3TagGenre = "Freestyle"
    Case 120
        mmGetID3TagGenre = "Duet"
    Case 121
        mmGetID3TagGenre = "Punk Rock"
    Case 122
        mmGetID3TagGenre = "Drum Solo"
    Case 123
        mmGetID3TagGenre = "Acapella"
    Case 124
        mmGetID3TagGenre = "Euro-House"
    Case 125
        mmGetID3TagGenre = "Dance Hall"
    Case 126
        mmGetID3TagGenre = "Goa"
    Case 127
        mmGetID3TagGenre = "Drum & Bass"
    Case 128
        mmGetID3TagGenre = "Club-House"
    Case 129
        mmGetID3TagGenre = "Hardcore"
    Case 130
        mmGetID3TagGenre = "Terror"
    Case 131
        mmGetID3TagGenre = "Indie"
    Case 132
        mmGetID3TagGenre = "BritPop"
    Case 133
        mmGetID3TagGenre = "Negerpunk"
    Case 134
        mmGetID3TagGenre = "Polsk Punk"
    Case 135
        mmGetID3TagGenre = "Beat"
    Case 136
        mmGetID3TagGenre = "Christian Gangsta"
    Case 137
        mmGetID3TagGenre = "Heavy Metal"
    Case 138
        mmGetID3TagGenre = "Black Metal"
    Case 139
        mmGetID3TagGenre = "Crossover"
    Case 140
        mmGetID3TagGenre = "Contemporary Classical"
    Case 141
        mmGetID3TagGenre = "Christian Rock"
    Case 142
        mmGetID3TagGenre = "Merengue"
    Case 143
        mmGetID3TagGenre = "Salsa"
    Case 144
        mmGetID3TagGenre = "Thrash Metal"
    Case 145
        mmGetID3TagGenre = "Anime"
    Case 146
        mmGetID3TagGenre = "JPop"
    Case 147
        mmGetID3TagGenre = "SynthPop"
End Select
End Function

Function mmSendMCIString(ByVal strMCIString As String, _
    ByRef strReturnString As String) As Long
Dim lngReturn As Long
Dim strReturn As String

strReturn = Space$(255)
lngReturn = mciSendString(strMCIString, strReturn, 255, 0)
strReturnString = strReturn
mmSendMCIString = lngReturn
End Function

Function mmIsArrayEmpty() As Boolean
On Error Resume Next
Dim lngUBound As Long

lngUBound = UBound(mmAliases)
If Err.Number <> 0 Then mmIsArrayEmpty = True
End Function

Sub mmInitArray()
If mmIsArrayEmpty() = False Then Exit Sub
ReDim mmAliases(0)
End Sub

Private Sub mmAddEntry(ByVal strFileName As String, _
    ByVal strAlias As String, Optional ByVal lngHandle As Long)
Dim sngFreeSlot As Single
Dim i As Single

Call mmInitArray
sngFreeSlot = -1

For i = 0 To UBound(mmAliases)
    If mmAliases(i).Alias = "" Then
        sngFreeSlot = i
        Exit For
    End If
Next i

If sngFreeSlot = -1 Then
    sngFreeSlot = UBound(mmAliases) + 1
    ReDim Preserve mmAliases(sngFreeSlot)
End If

mmAliases(sngFreeSlot).Alias = strAlias
mmAliases(sngFreeSlot).FileName = strFileName
mmAliases(sngFreeSlot).Handle = lngHandle
Call mmOptimiseArray
End Sub

Private Sub mmRemoveEntry(ByVal strAlias As String)
Dim sngSlot As Single
Dim i As Single

Call mmInitArray
sngSlot = -1

For i = 0 To UBound(mmAliases)
    If LCase$(mmAliases(i).Alias) = LCase$(strAlias) Then
        sngSlot = i
        Exit For
    End If
Next i

If sngSlot = -1 Then Exit Sub

If sngSlot > 0 And sngSlot < UBound(mmAliases) Then
    For i = UBound(mmAliases) To sngSlot + 1 Step -1
        mmAliases(i - 1).Alias = mmAliases(i).Alias
        mmAliases(i - 1).FileName = mmAliases(i).FileName
    Next i
End If

If UBound(mmAliases) > 0 Then
    ReDim Preserve mmAliases(UBound(mmAliases) - 1)
Else
    ReDim mmAliases(0)
End If

Call mmOptimiseArray
End Sub

Private Sub mmOptimiseArray()
Dim sngEmptyAlias As Single
Dim i As Single

Call mmInitArray

Do
sngEmptyAlias = -1

For i = 1 To UBound(mmAliases)
    If mmAliases(i).Alias = "" Then
        sngEmptyAlias = i
        Exit For
    End If
Next i

If sngEmptyAlias > 0 And sngEmptyAlias < UBound(mmAliases) Then
    For i = UBound(mmAliases) To sngEmptyAlias + 1 Step -1
        mmAliases(i - 1).Alias = mmAliases(i).Alias
        mmAliases(i - 1).FileName = mmAliases(i).FileName
    Next i
End If

If sngEmptyAlias > 0 And sngEmptyAlias < UBound(mmAliases) Then
    ReDim Preserve mmAliases(UBound(mmAliases) - 1)
ElseIf sngEmptyAlias = 0 Then
    ReDim mmAliases(0)
End If
Loop Until sngEmptyAlias = -1
End Sub

Function mmGetFileName(strMultimedia As String) As String
Dim i As Single

Call mmInitArray

For i = 0 To UBound(mmAliases)
    If LCase$(mmAliases(i).Alias) = LCase$(strMultimedia) Then
        mmGetFileName = mmAliases(i).FileName
        Exit For
    End If
Next i

If mmGetFileName = "" Then Exit Function
If Dir(strMultimedia) <> "" Then mmGetFileName = strMultimedia
End Function

Function mmGetHandle(strAlias As String) As String
Dim i As Single

Call mmInitArray

For i = 0 To UBound(mmAliases)
    If LCase$(mmAliases(i).Alias) = LCase$(strAlias) Then
        mmGetHandle = mmAliases(i).Handle
        Exit For
    End If
Next i
End Function

Property Get Status() As String
Status = strStatus
End Property