public MultiBandCompressor( Backend.Quality quality )
{
switch (quality)
{
case Backend.Quality.HIGH:
_crossover =
new StereoCrossover( 190.0,
2200.0,
StereoCrossover.Quality.HIGH );
break;
case Backend.Quality.MEDIUM:
_crossover =
new StereoCrossover( 190.0,
2200.0,
StereoCrossover.Quality.MEDIUM );
break;
case Backend.Quality.LOW:
_crossover =
new StereoCrossover( 190.0,
2200.0,
StereoCrossover.Quality.LOW );
break;
default:
throw new ApplicationException( "Unexpected case in switch" );
}
// Default levels:
compressThresholdBass = 9000; // 12000
compressThresholdMid = 5775; // 7000
compressThresholdTreble = 3375; // 4500
// Allow overshoot in the limiter, as long as we are using
// soft clipping.
_limiter.limit = 49150.0;
}
///
/// Call this to create the singleton object
///
public static void Init( int desiredQueueSize,
string connectionString,
Quality qualityLevel,
CompressionType compressType,
string metadataProgram )
{
_theBackend = new Backend( desiredQueueSize,
connectionString,
qualityLevel,
compressType,
metadataProgram );
}
///
/// \warning When creating an object for remoting, call Init() and
/// access the singleton returned by theBackend. This constructor
/// is public only for use by non-remoting configurations.
///
public Backend( int desiredQueueSize,
string connectionString,
Quality qualityLevel,
Backend.CompressionType compressionType,
string metadataFileName )
{
_Trace( "[Backend]" );
_qualityLevel = qualityLevel;
_compressionType = compressionType;
_desiredQueueSize = desiredQueueSize;
_connectionString = connectionString;
if (null == _connectionString)
throw new ApplicationException( "Engine is not properly initialized by the server" );
_database = new StatusDatabase( _connectionString );
_metadataSender = new MetadataSender( metadataFileName );
// Todo: initialize compressor from stored settings in database
_compressor = _LoadCompressor();
// Get defaults from this kind of thing?
// string bufferSize =
// ConfigurationSettings.AppSettings ["BufferSize"];
// Set up default buffering for the audio engine
_player = new Player();
_player.bufferSize = 44100 / 8 ;
_player.buffersInQueue = 40;
_player.buffersToPreload = 20;
// Set up callbacks
_player.OnTrackFinished +=
new TrackFinishedHandler( _TrackFinishedCallback );
_player.OnTrackPlayed +=
new TrackStartingHandler( _TrackStartingCallback );
_player.OnReadBuffer +=
new ReadBufferHandler( _TrackReadCallback );
}
