public static Image <Rgb24> DrawOneScaledIndexSpectrogramTile(
LdSpectrogramConfig config,
IndexGenerationData indexGenerationData,
Dictionary <string, IndexProperties> indexProperties,
TimeSpan startTime,
TimeSpan dataScale,
TimeSpan imageScale,
int superTileImageWidth,
Dictionary <string, double[, ]> spectra,
string basename,
ImageChrome chromeOption)
{
Contract.Requires(!spectra.IsNullOrEmpty());
// calculate data duration from column count of abitrary matrix
var matrix = spectra.First().Value;
int columnCount = matrix.GetLength(1);
TimeSpan dataDuration = TimeSpan.FromSeconds(columnCount * dataScale.TotalSeconds);
var analysisStartTime = indexGenerationData.RecordingStartDate.Value.TimeOfDay.Add(indexGenerationData.AnalysisStartOffset);
TimeSpan offsetTime = TimeSpan.Zero;
TimeSpan imageDuration = TimeSpan.FromTicks(superTileImageWidth * imageScale.Ticks);
TimeSpan halfImageDuration = TimeSpan.FromTicks(superTileImageWidth * imageScale.Ticks / 2);
if (startTime < TimeSpan.Zero)
{
offsetTime = TimeSpan.Zero - startTime;
startTime = TimeSpan.Zero;
}
TimeSpan endTime = startTime + imageDuration;
if (endTime > dataDuration)
{
endTime = dataDuration;
}
// get the plain unchromed spectrogram
var ldSpectrogram = ZoomCommon.DrawIndexSpectrogramCommon(
config,
indexGenerationData,
indexProperties,
startTime,
endTime,
dataScale,
imageScale,
superTileImageWidth,
spectra,
basename);
if (chromeOption == ImageChrome.Without)
{
return(ldSpectrogram);
}
int nyquist = 22050 / 2;
if (indexGenerationData.SampleRateResampled > 0)
{
nyquist = indexGenerationData.SampleRateResampled / 2;
}
int hertzInterval = 1000;
if (config != null)
{
hertzInterval = config.YAxisTicInterval;
}
string title = $"ZOOM SCALE={imageScale.TotalSeconds}s/pixel";
var titleBar = ZoomFocusedSpectrograms.DrawTitleBarOfZoomSpectrogram(title, ldSpectrogram.Width);
startTime += analysisStartTime;
ldSpectrogram = ZoomFocusedSpectrograms.FrameZoomSpectrogram(
ldSpectrogram,
titleBar,
startTime,
imageScale,
config.XAxisTicInterval,
nyquist,
hertzInterval);
// create the base image
var image = Drawing.NewImage(ldSpectrogram.Width, ldSpectrogram.Height, Color.DarkGray);
var xOffset = (int)(offsetTime.Ticks / imageScale.Ticks);
image.Mutate(g1 =>
{
g1.DrawImage(ldSpectrogram, new Point(xOffset, 0), 1);
});
return(image);
}
/// <summary>
/// THIS IS ENTRY METHOD FOR TILING SPECTROGRAMS.
/// </summary>
public static void DrawTiles(
AnalysisIoInputDirectory io,
ZoomParameters common,
string analysisTag)
{
Log.Info("Begin Draw Super Tiles");
Contract.Requires(common != null, "common can not be null");
Contract.Requires(common.SpectrogramZoomingConfig != null, "SpectrogramZoomingConfig can not be null");
var zoomConfig = common.SpectrogramZoomingConfig;
LdSpectrogramConfig ldsConfig = common.SpectrogramZoomingConfig.LdSpectrogramConfig;
var distributions = common.IndexDistributions;
var indexGenerationData = common.IndexGenerationData;
var indexProperties = zoomConfig.IndexProperties;
string fileStem = common.OriginalBasename;
// scales for false color index spectrograms images in seconds per pixel.
double[] indexScales = zoomConfig.SpectralIndexScale;
// default scales for standard (FFT) spectrograms in seconds per pixel.
double[] standardScales = zoomConfig.SpectralFrameScale;
ValidateScales(indexScales, indexGenerationData.IndexCalculationDuration.TotalSeconds);
var shouldRenderStandardScale = !standardScales.IsNullOrEmpty();
if (!shouldRenderStandardScale)
{
Log.Warn("Standard spectrograms will not be rendered");
}
var allImageScales = indexScales.Concat(standardScales).ToArray();
Log.Info("Tiling at scales: " + allImageScales.ToCommaSeparatedList());
// determine what naming format to use for tiles
var(namingPattern, alignmentPadding) = GetTilingProfile(
common,
zoomConfig,
indexGenerationData,
indexScales.Max());
// pad out image so it produces a whole number of tiles
// this solves the asymmetric right padding of short audio files
// var paddedWidth = (int)(Math.Ceiling(zoomConfig.TileWidth / xNominalUnitScale) * xNominalUnitScale);
// create a new tiler
// pass it scales for x and y-axis
// also pass it unit scale relations (between unit scale and unit height/width) to use as a reference point
var tiler = new Tiler(
new DirectoryInfo(io.OutputBase.FullName),
namingPattern,
xScales: new SortedSet <double>(allImageScales),
xUnitScale: XNominalUnitScale,
unitWidth: 1440,
yScales: new SortedSet <double>(allImageScales.Select(x => 1.0)),
yUnitScale: 1.0,
unitHeight: namingPattern.TileHeight);
var(spectra, filteredIndexProperties) = ZoomCommon.LoadSpectra(io, analysisTag, fileStem, zoomConfig.LdSpectrogramConfig, indexProperties);
// false color index tiles
GenerateIndexSpectrogramTiles(
indexScales,
ldsConfig,
filteredIndexProperties,
zoomConfig,
spectra,
indexGenerationData,
fileStem,
namingPattern,
tiler,
alignmentPadding);
// standard fft frame spectrograms
if (shouldRenderStandardScale)
{
GenerateStandardSpectrogramTiles(
spectra,
indexGenerationData,
ldsConfig,
filteredIndexProperties,
zoomConfig,
standardScales,
fileStem,
namingPattern,
tiler,
alignmentPadding);
}
Log.Success("Tiling complete");
}
