//
// CodecBox_Changed
//
// Handler sub for the selection change event of the codec combo box.
// It is checked, whether the new selected codec has a configuration dialog
// and is able to export and import configuration data. Depending on these
// capabilities the appropriate controls of the AVI Dialog will be enabled or
// disabled.
//
private void CodecBox_Changed(object sender, System.EventArgs e)
{
AviCompressor Codec = ((AviCompressor)(CodecBox.SelectedItem));
// Check for the configuration dialog
if (Codec.PropertyPageAvailable)
{
cmdShowPropPage.Enabled = true;
}
else
{
cmdShowPropPage.Enabled = false;
}
// Check, whether the codec exports and imports configuration data
if (Codec.CompressorDataSize > 0)
{
cmdSaveCodecData.Enabled = true;
cmdLoadCodecData.Enabled = true;
edtConfigFile.Enabled = true;
cmdCodecDataFileChooser.Enabled = true;
}
else
{
cmdSaveCodecData.Enabled = false;
cmdLoadCodecData.Enabled = false;
edtConfigFile.Enabled = false;
cmdCodecDataFileChooser.Enabled = false;
}
}
//
// cmdSaveCodecData_Click
//
// Save the configuration properties of the current selected codec to a
// binary file.
//
//<<SaveData
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);
}
}
}
//>>
//
// cmdShowPropPage_Click
//
// Event handler sub of the codec property button. If the current
// seleceted codec has a property dialog, the property button is
// enabled. A click on this button opens the codec's property dialog.
//
private void cmdShowPropPage_Click(object sender, System.EventArgs e)
{
AviCompressor Codec = null;
Codec = ((AviCompressor)(CodecBox.SelectedItem));
Codec.ShowPropertyPage();
}
//>>
//
// cmdLoadCodecData_Click
//
// The previously saved codec configuration is loaded from the
// file specified in edtConfigFile.Text. The codec configuration
// contains the name of the codec. This name is searched in the
// codec combobox. If it was found, the codec is selected and the
// configuration data is assigned to this codec.
//
//<<LoadData
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);
}
}
}
