public void TestJpegLibraryEncode444()
{
var encoder = new JpegEncoder();
encoder.SetQuantizationTable(JpegStandardQuantizationTable.ScaleByQuality(JpegStandardQuantizationTable.GetLuminanceTable(JpegElementPrecision.Precision8Bit, 0), 75));
encoder.SetQuantizationTable(JpegStandardQuantizationTable.ScaleByQuality(JpegStandardQuantizationTable.GetChrominanceTable(JpegElementPrecision.Precision8Bit, 1), 75));
encoder.SetHuffmanTable(true, 0, JpegStandardHuffmanEncodingTable.GetLuminanceDCTable());
encoder.SetHuffmanTable(false, 0, JpegStandardHuffmanEncodingTable.GetLuminanceACTable());
encoder.SetHuffmanTable(true, 1, JpegStandardHuffmanEncodingTable.GetChrominanceDCTable());
encoder.SetHuffmanTable(false, 1, JpegStandardHuffmanEncodingTable.GetChrominanceACTable());
encoder.AddComponent(1, 0, 0, 0, 1, 1); // Y component
encoder.AddComponent(2, 1, 1, 1, 1, 1); // Cb component
encoder.AddComponent(3, 1, 1, 1, 1, 1); // Cr component
byte[] ycbcr = ArrayPool <byte> .Shared.Rent(3 *_width *_height);
try
{
JpegRgbToYCbCrConverter.Shared.ConvertRgba32ToYCbCr8(MemoryMarshal.AsBytes(_rgba.AsSpan()), ycbcr, _width * _height);
encoder.SetInputReader(new JpegBufferInputReader(_width, _height, 3, ycbcr));
using var bufferWriter = new NullBufferWriter();
encoder.SetOutput(bufferWriter);
encoder.Encode();
}
finally
{
ArrayPool <byte> .Shared.Return(ycbcr);
}
}
public void TestJpegLibraryEncode420_NoBuffer()
{
var encoder = new JpegEncoder();
encoder.SetQuantizationTable(JpegStandardQuantizationTable.ScaleByQuality(JpegStandardQuantizationTable.GetLuminanceTable(JpegElementPrecision.Precision8Bit, 0), 75));
encoder.SetQuantizationTable(JpegStandardQuantizationTable.ScaleByQuality(JpegStandardQuantizationTable.GetChrominanceTable(JpegElementPrecision.Precision8Bit, 1), 75));
encoder.SetHuffmanTable(true, 0, JpegStandardHuffmanEncodingTable.GetLuminanceDCTable());
encoder.SetHuffmanTable(false, 0, JpegStandardHuffmanEncodingTable.GetLuminanceACTable());
encoder.SetHuffmanTable(true, 1, JpegStandardHuffmanEncodingTable.GetChrominanceDCTable());
encoder.SetHuffmanTable(false, 1, JpegStandardHuffmanEncodingTable.GetChrominanceACTable());
encoder.AddComponent(1, 0, 0, 0, 1, 1); // Y component
encoder.AddComponent(2, 1, 1, 1, 2, 2); // Cb component
encoder.AddComponent(3, 1, 1, 1, 2, 2); // Cr component
encoder.SetInputReader(new JpegRgbaInputReader(_width, _height, _rgba));
using var bufferWriter = new NullBufferWriter();
encoder.SetOutput(bufferWriter);
encoder.Encode();
}