public MatrixFrame DecodeMatrixFrame(MatrixSettings settings)
{
if (DesktopFrameBuffer == null || DesktopFrameBuffer.Length <= 0 || IsDesktopImageBufferEmpty)
{
return(null);
}
if (settings == null)
{
throw new ArgumentNullException(nameof(settings));
}
if (settings.Map == null || settings.Map.Count == 0 || settings.Map.Count % 2 != 0)
{
throw new InvalidOperationException("The matrix map specified in the settings must be non-null and contain at least 1 point pair and have an even number of values.");
}
var rawData = new byte[settings.Map.Count / 2 * 3];
var span = new ReadOnlySpan <byte>(DesktopFrameBuffer);
var bpp = System.Drawing.Image.GetPixelFormatSize(PixelFormat.Format32bppRgb) / 8;
for (int i = 0; i < settings.Map.Count / 2; i++)
{
var x = settings.Map[i * 2];
var y = settings.Map[i * 2 + 1];
var ix = y * DesktopWidth * bpp + x * bpp;
rawData[i * 3] = span[ix + 2];
rawData[i * 3 + 1] = span[ix + 1];
rawData[i * 3 + 2] = span[ix];
}
return(MatrixFrame.CreateMatrixFrame(rawData, settings));
}
public static MatrixFrame CreateMatrixFrame(byte[] rawData, MatrixSettings settings)
{
if (rawData == null)
{
throw new ArgumentNullException(nameof(rawData));
}
if (settings == null)
{
throw new ArgumentNullException(nameof(settings));
}
var frameIdIndex = 0;
if (settings.FrameIdIndex.HasValue)
{
frameIdIndex = settings.FrameIdIndex.Value;
}
var metadataIndex = 1;
if (settings.FrameMetadataIndex.HasValue)
{
metadataIndex = settings.FrameMetadataIndex.Value;
}
// Returns a read-only span of the raw data without the frame id and metadata.
ReadOnlySpan <byte> GetRawDataSpan()
{
ReadOnlySpan <byte> rawDataSpan;
if (frameIdIndex == 0 && metadataIndex == 1)
{
rawDataSpan = new ReadOnlySpan <byte>(rawData, 6, rawData.Length - 6);
}
else
{
var tempData = new List <byte>(rawData);
tempData.RemoveRange(frameIdIndex, 3);
tempData.RemoveRange(metadataIndex, 3);
rawDataSpan = new ReadOnlySpan <byte>(tempData.ToArray());
}
return(rawDataSpan);
}
string GetDataAsHex()
{
var sb = new StringBuilder(settings.Map.Count * 3);
for (int lineNumber = 0; lineNumber < Math.Ceiling((decimal)settings.Map.Count / LineLength); lineNumber++)
{
var bytes = settings.Map.Count - lineNumber * LineLength > LineLength ? LineLength : settings.Map.Count - lineNumber * LineLength;
var line = new byte[bytes];
Array.Copy(rawData, lineNumber * LineLength * 3, line, 0, bytes);
sb.AppendLine(BitConverter.ToString(line).Replace("-", " ", StringComparison.OrdinalIgnoreCase));
}
return(sb.ToString());
}
string GetDataAsTextGrid()
{
var rawDataSpan = GetRawDataSpan();
var sb = new StringBuilder(settings.Map.Count * 3);
for (int lineNumber = 0; lineNumber < Math.Ceiling((decimal)settings.Map.Count / LineLength); lineNumber++)
{
var slice = rawDataSpan.Slice(lineNumber * LineLength, settings.Map.Count - lineNumber * LineLength > LineLength ? LineLength : settings.Map.Count - lineNumber * LineLength);
sb.AppendLine(Encoding.ASCII.GetString(slice));
}
return(sb.ToString());
}
string GetDataAsText()
{
var rawDataSpan = GetRawDataSpan();
var eol = rawDataSpan.IndexOf((byte)0x00);
if (eol == -1)
{
return(Encoding.ASCII.GetString(rawDataSpan));
}
else
{
var slice = rawDataSpan.Slice(0, eol);
return(Encoding.ASCII.GetString(slice));
}
}
JsonElement GetDataAsJson()
{
var reader = new Utf8JsonReader(GetRawDataSpan());
try
{
if (!JsonDocument.TryParseValue(ref reader, out JsonDocument jsonDoc))
{
// Couldn't deserialize, return default JsonElement
return(default);
