/// <summary>
/// Restore the camera's last settings from the registry
/// </summary>
private void RestoreCameraSettings()
{
object setting;
if (cg is VideoCaptureGraph)
{
VideoCaptureGraph vcg = (VideoCaptureGraph)cg;
if (vcg.VideoSource.HasVideoStandards)
{
if ((setting = AVReg.ReadValue(DeviceKey(), AVReg.VideoStandardIndex)) != null)
{
vcg.VideoSource.VideoStandardIndex = (int)setting;
}
}
}
else if (cg is DVCaptureGraph)
{
DVCaptureGraph dvcg = (DVCaptureGraph)cg;
if (dvcg.VideoSource.HasVideoStandards)
{
if ((setting = AVReg.ReadValue(DeviceKey(), AVReg.VideoStandardIndex)) != null)
{
dvcg.VideoSource.VideoStandardIndex = (int)setting;
}
}
}
if (cg.Source.HasPhysConns)
{
if ((setting = AVReg.ReadValue(DeviceKey(), AVReg.PhysicalConnectorIndex)) != null)
{
cg.Source.PhysicalConnectorIndex = (int)setting;
}
}
}
/// <summary>
/// Restore the video compressor's last settings from the registry
/// </summary>
private void RestoreVideoCompressorSettings()
{
VideoCompressorQualityInfo vcqi = DefaultQualityInfo();
vcqi.KeyFrameRate = (int)AVReg.ReadValue(DeviceKey(), AVReg.CompressorKeyFrameRate);
vcqi.BitRate = (uint)((int)AVReg.ReadValue(DeviceKey(), AVReg.CompressorBitRate));
vcg.VideoCompressor.QualityInfo = vcqi;
}
/// <summary>
/// Restore the audio device input pin setting from the registry. Not applicable to DV sources
/// </summary>
private void RestoreMicrophoneSettings()
{
AudioCaptureGraph acg = cg as AudioCaptureGraph;
if (acg != null)
{
object setting = AVReg.ReadValue(DeviceKey(), AVReg.MicrophoneSourceIndex);
if (setting != null)
{
if ((int)setting < cg.Source.InputPins.Count)
{
acg.AudioSource.InputPinIndex = (int)setting;
}
}
}
}
/// <summary>
/// Restore custom buffer settings from the registry, if any. This doesn't seem to work with DV Sources.
/// It is also not relevant for the Opus Encoder since the settings will be overridden later in that case.
/// </summary>
private void RestoreBufferSettings()
{
if (cg is AudioCaptureGraph)
{
AudioCaptureGraph acg = (AudioCaptureGraph)cg;
object bufSz = AVReg.ReadValue(DeviceKey(), AVReg.AudioBufferSize);
if (bufSz != null)
{
acg.AudioSource.BufferSize = (int)bufSz;
}
object bufCnt = AVReg.ReadValue(DeviceKey(), AVReg.AudioBufferCount);
if (bufCnt != null)
{
acg.AudioSource.BufferCount = (int)bufCnt;
}
}
}
/// <summary>
/// Restore the video stream's last settings from the registry
/// </summary>
private void RestoreVideoSettings()
{
// Read media type from registry
byte[] bytes = (byte[])AVReg.ReadValue(DeviceKey(), AVReg.MediaType);
if (bytes != null)
{
AVReg.ms.Position = 0;
AVReg.ms.Write(bytes, 0, bytes.Length);
AVReg.ms.Position = 0;
_AMMediaType mt = (_AMMediaType)AVReg.bf.Deserialize(AVReg.ms);
// Read format block from registry
if (mt.cbFormat != 0)
{
bytes = (byte[])AVReg.ReadValue(DeviceKey(), AVReg.FormatBlock);
Debug.Assert(bytes.Length == mt.cbFormat);
mt.pbFormat = Marshal.AllocCoTaskMem((int)mt.cbFormat);
Marshal.Copy(bytes, 0, mt.pbFormat, (int)mt.cbFormat);
Log("Restoring stream settings...");
Log(MediaType.Dump(mt));
try
{
// Set and free
cg.Source.SetMediaType(ref mt);
}
catch (COMException ex)
{
Log(DShowError._AMGetErrorText(ex.ErrorCode));
Log(ex.ToString());
}
catch (Exception ex)
{
Log(ex.ToString());
}
}
}
}
/// <summary>
/// Restore the camera's last settings from the registry
/// </summary>
private void RestoreCameraSettings()
{
object setting;
if (vcg.VideoSource.HasVideoStandards)
{
if ((setting = AVReg.ReadValue(DeviceKey(), AVReg.VideoStandardIndex)) != null)
{
vcg.VideoSource.VideoStandardIndex = (int)setting;
}
}
if (vcg.Source.HasPhysConns)
{
if ((setting = AVReg.ReadValue(DeviceKey(), AVReg.PhysicalConnectorIndex)) != null)
{
vcg.Source.PhysicalConnectorIndex = (int)setting;
}
}
}
/// <summary>
/// Get the selected audio compressor from the registry. It may be a moniker of a compressor that is enabled
/// on the system or "Uncompressed". Otherwise return the default compressor.
/// </summary>
/// <returns></returns>
public static FilterInfo SelectedCompressor()
{
FilterInfo selectedCompressor = AudioCompressor.DefaultFilterInfo();
string regSelectedCompressor = (string)AVReg.ReadValue(AVReg.SelectedDevices, AVReg.AudioCompressor);
if (regSelectedCompressor != null)
{
if (regSelectedCompressor == "Uncompressed")
{
return(new FilterInfo("Uncompressed", "Uncompressed", Guid.Empty));
}
foreach (FilterInfo fi in AudioCompressor.EnabledCompressors)
{
if (fi.Moniker == regSelectedCompressor)
{
selectedCompressor = fi;
break;
}
}
}
return(selectedCompressor);
}
/// <summary>
/// Populate form controls and compressor static values from the registry, while validating what was loaded.
///
/// We assume that for each control whose value needs to be persisted there is a public static int
/// field in the compressor class, the name of which is used as a key for finding validation data.
/// Validation data may come in the form of an enum with int as the underlying data type, an
/// int[] containing the accepted values, or an int[] containing min/max values. We look for them in
/// that order, stopping when the first is found.
///
/// Once validated we put the value into the corresponding ComboBox or TextBox. If validation fails
/// we get a default value from the compressor and use that instead.
/// </summary>
private void RestoreComboBoxValues()
{
// Loop over all the public statics in the compressor type.
Type compressorType = typeof(OpusAudioCompressor);
FieldInfo[] fields = compressorType.GetFields(BindingFlags.Public | BindingFlags.Static);
foreach (FieldInfo field in fields)
{
if (field.IsLiteral || field.IsInitOnly)
{
continue; //Ignore const and readonly
}
// Fetch the current value in case none is set in the registry.
// On first use, this should be the default.
object newValue = field.GetValue(null);
// Read from registry
object val = AVReg.ReadValue(AVReg.OpusCompressorKey, field.Name);
if (val != null)
{
newValue = val;
field.SetValue(null, newValue);
}
// Find the corresponding enum or array for validation
Type enumType;
int[] valuesArray;
// Check for enum first
if ((enumType = findEnumType(field.Name)) != null)
{
if (!enumType.IsEnumDefined(newValue))
{
//If the registry value is invalid, revert to default value
newValue = findDefaultValue(field.Name);
field.SetValue(null, newValue);
}
ComboBox cb = findComboBox(field.Name);
if (cb != null)
{
cb.SelectedItem = Enum.ToObject(enumType, newValue);
}
}
else if ((valuesArray = findValuesArray(field.Name)) != null)
{
// If there's no matching enum, look for the corresponding array of int.
int i = (int)newValue;
bool validated = false;
foreach (int j in valuesArray)
{
if (i == j)
{
validated = true;
break;
}
}
if (!validated)
{
newValue = findDefaultValue(field.Name);
field.SetValue(null, newValue);
}
ComboBox cb = findComboBox(field.Name);
if (cb != null)
{
cb.SelectedItem = newValue;
}
}
else if ((valuesArray = findMinMaxArray(field.Name)) != null)
{
// In this case the integer value is constrained by min and max, and the
// control is a TextBox.
if ((int)newValue < valuesArray[0] || (int)newValue > valuesArray[1])
{
newValue = findDefaultValue(field.Name);
field.SetValue(null, newValue);
}
TextBox tb = findTextBox(field.Name);
if (tb != null)
{
tb.Text = newValue.ToString();
}
}
}
}
