IC Imaging Control .NET

AviCompressor.CompressorDataSize Property

AviCompressor.CompressorDataSize Property

Returns the size of the SAFEARRAY of Byte returned by CompressorData.
Syntax:
[VB.NET]
Public CompressorDataSize As Integer
[C#]
public int CompressorDataSize;
Limitations:

Read only.

Remarks:

The CompressorDataSize is useful, if codec properties are to be saved to a file. Reading the size value first from file, enables an application to create an array of the matching size that will get the codec properties.

Sample:

How to use the CompressorDataSize is shown in the sample Saving Codec Properties.

Save the data from a codec that was selected in a combo box.

[VB.NET]
Private Sub cmdSaveCodecData_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles cmdSaveCodecData.Click If edtConfigFile.Text <> "" Then Try Dim Filestream As New System.IO.FileStream(edtConfigFile.Text, System.IO.FileMode.Create, System.IO.FileAccess.Write) ' Create the writer for data. Dim BinWriter As New System.IO.BinaryWriter(Filestream) ' Write data to Test.data. Dim aviComp As AviCompressor aviComp = CType(CodecBox.SelectedItem(), AviCompressor) BinWriter.Write(aviComp.ToString()) BinWriter.Write(aviComp.CompressorDataSize) BinWriter.Write(aviComp.CompressorData) BinWriter.Close() Filestream.Close() Catch Ex As System.Exception MsgBox(Ex.Message, MsgBoxStyle.Critical, "Write error") End Try End If End Sub
[C#]
private void cmdSaveCodecData_Click(object sender, System.EventArgs e) { if (edtConfigFile.Text != "") { try { System.IO.FileStream Filestream = new System.IO.FileStream(edtConfigFile.Text, System.IO.FileMode.Create, System.IO.FileAccess.Write); // Create the writer for data. System.IO.BinaryWriter BinWriter = new System.IO.BinaryWriter(Filestream); // Write data to Test.data. AviCompressor aviComp = null; aviComp = ((AviCompressor)(CodecBox.SelectedItem)); BinWriter.Write(aviComp.ToString()); BinWriter.Write(aviComp.CompressorDataSize); BinWriter.Write(aviComp.CompressorData); BinWriter.Close(); Filestream.Close(); } catch (Exception Ex) { MessageBox.Show(Ex.Message, "Write error", MessageBoxButtons.OK, MessageBoxIcon.Error); } } }

Load the previously saved data and assign it to a codec.

[VB.NET]
Private Sub cmdLoadCodecData_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles cmdLoadCodecData.Click If edtConfigFile.Text <> "" Then Try ' Create the reader for data. Dim Filestrem As New System.IO.FileStream(edtConfigFile.Text, System.IO.FileMode.Open, System.IO.FileAccess.Read) Dim BinReader As New System.IO.BinaryReader(Filestrem) Dim CodecName As String Dim Codec As AviCompressor Dim CodecFound As Boolean ' Retrieve the name of the codec from the codec configuration file CodecName = BinReader.ReadString() ' Search this codec in the codec combo box CodecFound = False For Each item As AviCompressor In CodecBox.Items If item.ToString() = CodecName Then CodecBox.SelectedItem = item Codec = item CodecFound = True End If Next If CodecFound = True Then Dim codecDataLen As Integer = BinReader.ReadInt32() ' Assign the configuration data to the codec. Codec.CompressorData = BinReader.ReadBytes(codecDataLen) Else ' If the codec was not found, display an error message. MsgBox("The codec " + CodecName + " was not found!", MsgBoxStyle.Information, "Load codec configuration") End If BinReader.Close() Filestrem.Close() Catch Ex As System.Exception MsgBox(Ex.Message, MsgBoxStyle.Critical, "Read error") End Try End If End Sub
[C#]
private void cmdLoadCodecData_Click(object sender, System.EventArgs e) { if (edtConfigFile.Text != "") { try { // Create the reader for data. System.IO.FileStream Filestrem = new System.IO.FileStream(edtConfigFile.Text, System.IO.FileMode.Open, System.IO.FileAccess.Read); System.IO.BinaryReader BinReader = new System.IO.BinaryReader(Filestrem); string CodecName = ""; AviCompressor Codec = null; bool CodecFound = false; // Retrieve the name of the codec from the codec configuration file CodecName = BinReader.ReadString(); // Search this codec in the codec combo box CodecFound = false; foreach (AviCompressor item in CodecBox.Items) { if (item.ToString() == CodecName) { CodecBox.SelectedItem = item; Codec = item; CodecFound = true; } } if (CodecFound == true) { int codecDataLen = BinReader.ReadInt32(); // Assign the configuration data to the codec. Codec.CompressorData = BinReader.ReadBytes(codecDataLen); } else { // If the codec was not found, display an error message. MessageBox.Show("The codec " + CodecName + " was not found!", "Load codec configuration", MessageBoxButtons.OK, MessageBoxIcon.Information); } BinReader.Close(); Filestrem.Close(); } catch (Exception Ex) { MessageBox.Show(Ex.Message, "Read error", MessageBoxButtons.OK, MessageBoxIcon.Error); } } }
See Also: AviCompressor, AviCompressor.CompressorData

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