CLASSE MP3 (TAGS, IMAGE)

Imports System.IO
Imports System.Net

<Serializable()> Public Class cls_mp3tag

    Public path As String
    Public directory As String
    Public filename As String
    Public artist As String
    Public title As String
    Public album As String
    Public genre As String = 255
    Public comments As String
    Public track As String
    Public tagged As Boolean
    Public num As Integer

    ' Genres
    Public Enum enum_genres As Byte
        Blues = 0
        ClassicRock = 1
        Country = 2
        Dance = 3
        Disco = 4
        Funk = 5
        Grunge = 6
        HipHop = 7
        Jazz = 8
        Metal = 9
        NewAge = 10
        Oldies = 11
        Other = 12
        Pop = 13
        RnB = 14
        Rap = 15
        Reggae = 16
        Rock = 17
        Techno = 18
        Industrial = 19
        Alternative = 20
        Ska = 21
        DeathMetal = 22
        Pranks = 23
        Soundtrack = 24
        EuroTechno = 25
        Ambient = 26
        TripHop = 27
        Vocal = 28
        JazzFunk = 29
        Fusion = 30
        Trance = 31
        Classical = 32
        Instrumental = 33
        Acid = 34
        House = 35
        Game = 36
        SoundClip = 37
        Gospel = 38
        Noise = 39
        AlternRock = 40
        Bass = 41
        Soul = 42
        Punk = 43
        Space = 44
        Meditative = 45
        InstrumentalPop = 46
        InstrumentalRock = 47
        Ethnic = 48
        Gothic = 49
        Darkwave = 50
        TechnoIndustrial = 51
        Electronic = 52
        PopFolk = 53
        Eurodance = 54
        Dream = 55
        SouthernRock = 56
        Comedy = 57
        Cult = 58
        Gangsta = 59
        Top40 = 60
        ChristianRap = 61
        PopFunk = 62
        Jungle = 63
        NativeAmerican = 64
        Cabaret = 65
        NewWave = 66
        Psychadelic = 67
        Rave = 68
        Showtunes = 69
        Trailer = 70
        LoFi = 71
        Tribal = 72
        AcidPunk = 73
        AcidJazz = 74
        Polka = 75
        Retro = 76
        Musical = 77
        RocknRoll = 78
        HardRock = 79
        None = 255
    End Enum

    '******************************************************************************
    'recup les infos a partir des tags
    Public Sub init(ByVal e_path As String)

        Me.path = e_path

        Try

            Me.filename = Me.path.Substring(Me.path.LastIndexOf("\") + 1)
            Me.title = Me.filename
            Me.directory = Me.path.Substring(0, Me.path.LastIndexOf("\") + 1)

            Dim Buffer(128) As Byte
            Dim StreamReadWrite As System.IO.FileStream
            Dim Encodeur As New System.Text.ASCIIEncoding
            Try
                StreamReadWrite = New System.IO.FileStream(path, System.IO.FileMode.Open, System.IO.FileAccess.ReadWrite, System.IO.FileShare.ReadWrite)
            Catch ex As Exception
                Exit Sub
            End Try

            Dim TagID3 As String
            StreamReadWrite.Seek(-128, System.IO.SeekOrigin.End)
            StreamReadWrite.Read(Buffer, 0, 128)
            TagID3 = Encodeur.GetString(Buffer)
            'Recherche du Tag TAG
            If TagID3.Substring(0, 3).Equals("TAG") Then
                'Initialisation de Title
                Me.title = TagID3.Substring(3, 30).Trim.Replace(Chr(0), "").Trim(CChar(vbNullChar))
                'Initialisation de Author
                Me.artist = TagID3.Substring(33, 30).Trim.Trim.Replace(Chr(0), "").Trim(CChar(vbNullChar))
                'Initialisation de Album
                Me.album = TagID3.Substring(63, 30).Trim.Trim.Replace(Chr(0), "").Trim(CChar(vbNullChar))
                'Initialisation de Comments
                Me.comments = TagID3.Substring(97, 28).Trim.Trim.Replace(Chr(0), "").Trim(CChar(vbNullChar))
                'Analyse du caractère 125 de TagID3
                If TagID3.Chars(125).Equals(0) Then
                    'Initialisation de Track
                    Me.track = Buffer.GetValue(126)
                    'Initialisation de Tagged
                    Me.tagged = False
                Else
                    'Initialisation de Track
                    Me.track = 0
                    'Initialisation de Category
                    Me.genre = Buffer.GetValue(127)
                    If Me.genre = "" Or Me.genre = " " Then
                        Me.genre = "255"
                    End If
                    If Me.title = "" Then Me.title = Me.filename
                    'Initialisation de Tagged
                    Me.tagged = True

                    'ferme le fichier
                    StreamReadWrite.Close()

                End If
            End If
        Catch IOex As System.IO.IOException

        End Try


        'si ya pas de title, on met le nom du fichier
        If Me.title = "" Then Me.title = Me.filename

        'si ya pas d'artiste, on met le nom du dossier 
        If IsNothing(Me.artist) OrElse Me.artist.Length = 0 Then Me.artist = "Inconnu"

    End Sub

    '******************************************************************************
    'recup l'image sur le site de la fnac :p
    Public Function get_picture(ByRef e_http As cls_http) As Image
        Try
            'envoi du formulaire avec les infos
            Dim requete_http As String
            Dim response_http As String
            requete_http = "http://www3.fnac.com/search/quick.do?text=" & Me.artist & " " & Me.title & " " & Me.album & "+&category=audio"
            response_http = e_http.get_url(requete_http)

            'recup le lien pour l'image
            Dim pos_debut As Integer = response_http.IndexOf("http://multimedia.fnac.com/multimedia/images_produits/petites")
            Dim pos_Fin As Integer = response_http.IndexOf("""", pos_debut)
            Dim url_img As String = response_http.Substring(pos_debut, pos_Fin - pos_debut)
            url_img = url_img.Replace("petites", "grandes")
            Debug.WriteLine(url_img)

            'enregistre l'image dans un fichier
            Return e_http.get_picture(url_img)

        Catch ex As Exception
            Debug.WriteLine("Erreur lors de la récupération de l'image: " & ex.Message)
            Return Nothing
        End Try

    End Function

End Class