我正在使用NAudio在C＃中编写软件并使用BufferedWaveProvider
进行编码var bufferedWaveProvider = new BufferedWaveProvider(new WaveFormat(16000, 16, 2));
// AddSamples here
WaveOut wavPlayer = new WaveOut();
wavPlayer.Init(bufferedWaveProvider);
wavPlayer.Play();
我怎么知道缓冲区已完全读取，或者现在确切位置。 由于已经调用了wavPlayer.Play（），我如何获得当前位置。 谢谢。
答案 0 :(得分：0)
Function IsInArray(stringToBeFound As String, arr As Variant) As Boolean
Dim bDimen As Byte, i As Long
On Error Resume Next
If IsError(UBound(arr, 2)) Then bDimen = 1 Else bDimen = 2
On Error GoTo 0
Select Case bDimen
Case 1
On Error Resume Next
IsInArray = Application.Match(stringToBeFound, arr, 0)
On Error GoTo 0
Case 2
For i = 1 To UBound(arr, 2)
On Error Resume Next
IsInArray = Application.Match(stringToBeFound,
Application.index(arr, , i), 0)
On Error GoTo 0
If IsInArray = True Then Exit For
Next
End Select
End Function
Sub Part_Separator()
Dim Source As Worksheet
Set Source = Sheets("Part Tracking Scorecard")
Dim ref1(), ref2() As Variant
Dim row, index, lastrow, lastcolumn As Integer
row = 92
lastrow = 866
lastcolumn = 84
ref1 = Source.Range(Source.Cells(row, 1), Source.Cells(lastrow, lastcolumn))
ReDim ref2(UBound(ref1, 1), UBound(ref1, 2))
For index = 0 To (lastrow - row)
If IsInArray(ref1(index, 6).Value, ref2) Then
index = index + 1
Else
ref2(index) = ref1(index) 'copy the entire row from source to ref2
index = index + 1
End If
Next index
Dim NewFile As Worksheet
Set NewFile = Sheets("Unique Parts")
Dim ref2dimension_x, ref2dimension_y As Integer 'find dimensions of ref2 array
ref2dimension_x = UBound(ref2, 1) - LBound(ref2, 1) + 1
ref2dimension_y = UBound(ref2, 2) - LBound(ref2, 2) + 1
For index = 2 To ref2dimension_x 'go through entire new sheet and set values
For index2 = 1 To ref2dimension_y
NewFile.Cells(index, index2).Value = ref2(index - 1, index2)
Next index2
Next index
Erase ref1()
Erase ref2() 'free up the space occupied by these arrays
End Sub
接口可以用来告诉你IWavePosition到目前为止播放了多少音频（以字节为单位） - 只需拨打WaveOut。
对于GetPosition()，如果您设置BufferedWaveProvider，则当您到达缓冲音频结束时，播放将自动停止。您还可以检查ReadFully=false属性以查看排队等待播放的音频数量