public DisplaySoftwareEncoder(SoftwareEncoder encoder)
{
_installed = "No";
_encoder = encoder;
}
/// <summary>
/// call this function before using an encoder to check
/// whether it is possible to use it
/// </summary>
/// <param name="device">the encoder device</param>
/// <param name="dbEncoder">the preferences for dealing with the encoder</param>
/// <returns><c>true</c> if the encoder can be used, otherwise <c>false</c></returns>
public bool Add(DsDevice device, SoftwareEncoder dbEncoder)
{
if (device == null)
{
return false;
}
int reuseLimit = Convert.ToInt32(_layer.GetSetting("softwareEncoderReuseLimit", "0").Value);
lock (_encodersInUse)
{
DsDevice key = null;
foreach (DsDevice dev in _encodersInUse.Keys)
{
if (dev.Name == device.Name && device.Mon.IsEqual(dev.Mon) == 0 && dev.DevicePath == device.DevicePath)
{
Log.Log.WriteFile("analog: compressor {0} is in use, checking reuse limit...", dev.Name);
key = dev;
break;
}
}
// Encoder not yet used -> always okay to use.
if (key == null)
{
Log.Log.WriteFile("analog: compressor {0} is usable", device.Name);
_encodersInUse.Add(device, 1);
return true;
}
// Encoder not yet in DB -> assume reusable.
if (dbEncoder == null)
{
Log.Log.WriteFile("analog: unrecognised compressor, assuming usable");
_encodersInUse[key]++;
return true;
}
// If the encoder is reusable then check
// the existing usage against the cap.
if (dbEncoder.Reusable)
{
if (reuseLimit <= 0 || _encodersInUse[key] < reuseLimit)
{
Log.Log.WriteFile("analog: reusable compressor, usage under limit (usage: {0}, limit: {1})",
_encodersInUse[key], reuseLimit == 0 ? "[unlimited]" : reuseLimit.ToString());
_encodersInUse[key]++;
return true;
}
else
{
Log.Log.WriteFile("analog: reusable compressor, usage already at limit (usage: {0}, limit: {1})",
_encodersInUse[key], reuseLimit);
return false;
}
}
}
// If we get to here then the encoder isn't reusable
// and it is in use, which means the limit has already
// been reached. The encoder wouldn't be in _encodersInUse
// if it wasn't in use...
Log.Log.WriteFile("analog: non-reusable compressor, already used");
return false;
}