IC Imaging Control .NET

AviCompressor.CompressorDataSize Property

AviCompressor.CompressorDataSize Property

Returns the size of the SAFEARRAY of Byte returned by CompressorData.
Syntax:
[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.

[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.

[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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