public RefreshVisualOutputEventArgs(VisualOutputMode mode, int[] dimensions, float[,,] values, bool changedSinceLastRefresh)
{
this.Mode = mode;
this.Dimensions = dimensions;
this.Values = values;
this.ChangedSinceLastRefresh = changedSinceLastRefresh;
}
public VisualOutput(MultiChannelInput <IDataChannel> mci, int maxFramesPerSecond, VisualOutputMode mode)
{
this.mode = mode;
if (mode == VisualOutputMode.Matrix)
{
channels = ChannelMapper.Get2DChannelMatrix(mci);
dimensions = new int[3] {
channels.GetLength(0), channels.GetLength(1), 1
};
values = new float[channels.GetLength(0), channels.GetLength(1), 1];
}
else if (mode == VisualOutputMode.Waveform)
{
channels = new IDataChannel[mci.ChannelCount, 1];
for (int i = 0; i < mci.ChannelCount; i++)
{
channels[i, 0] = mci.GetChannel(i);
}
dimensions = new int[3] {
mci.ChannelCount, mci.SamplesPerSecond, 1
};
values = new float[mci.ChannelCount, mci.SamplesPerSecond, 1];
}
else if (mode == VisualOutputMode.Spectrum)
{
channels = new IDataChannel[mci.ChannelCount, 1];
int?blockSize = null;
for (int i = 0; i < mci.ChannelCount; i++)
{
channels[i, 0] = mci.GetChannel(i);
var filter = FilterManager.FindFilter <FFTWFilter>(channels[i, 0]);
if (filter == null)
{
throw new Exception("VisualOutput's Spectrum mode supports FFTWFilter only.");
}
var filterSettings = filter.GetSettings();
if (filterSettings.OutputFormat != FFTOutputFormat.Magnitude)
{
throw new InvalidDataException($"VisualOutput's Spectrum mode needs and FFT output format of 'Magnitude'. Your FFT filter has '{filterSettings.OutputFormat}'.");
}
if (!blockSize.HasValue)
{
blockSize = filter.OutputBlockSize;
}
if (blockSize != filter.OutputBlockSize)
{
throw new Exception("All of the OutputBlockSizes of the filters of the multichannel input must be the same.");
}
}
dimensions = new int[3] {
mci.ChannelCount, blockSize.Value, 1
};
values = new float[mci.ChannelCount, blockSize.Value, 1];
}
else if (mode == VisualOutputMode.DominanceMatrix)
{
channels = ChannelMapper.Get2DChannelMatrix(mci);
var filter = FilterManager.FindFilter <FFTWFilter>(channels[0, 0]);
if (filter == null)
{
throw new Exception("VisualOutput's DominanceMatrix mode supports FFTWFilter only.");
}
var filterSettings = filter.GetSettings();
if (filterSettings.OutputFormat != FFTOutputFormat.FrequencyMagnitudePair)
{
throw new InvalidDataException($"VisualOutput's DominanceMatrix mode needs and FFT output format of 'FrequencyMagnitudePair'. Your FFT filter has '{filterSettings.OutputFormat}'.");
}
dimensions = new int[3] {
channels.GetLength(0), channels.GetLength(1), 5 * 2
}; // will containg the top 5 frequencies and their strength
values = new float[channels.GetLength(0), channels.GetLength(1), 5 * 2];
}
mci.DataChanged += DataChanged;
refreshVisualOutputTimer = new Timer(UpdateVisualOutput, this, 0, 1000 / maxFramesPerSecond);
}
