public void SetImageAttributes(LoadedImageAttributes parameters)
{
if (parameters == null)
throw new ArgumentNullException("parameters");
m_parameters = parameters;
}
/// <summary>
/// Decompresses JPEG image to any image described as ICompressDestination
/// </summary>
/// <param name="jpeg">Stream with JPEG data</param>
/// <param name="destination">Stream for output of compressed JPEG</param>
public void Decompress(Stream jpeg, IDecompressDestination destination)
{
if (jpeg == null)
{
throw new ArgumentNullException("jpeg");
}
if (destination == null)
{
throw new ArgumentNullException("destination");
}
beforeDecompress(jpeg);
// Start decompression
m_decompressor.jpeg_start_decompress();
LoadedImageAttributes parameters = getImageParametersFromDecompressor();
destination.SetImageAttributes(parameters);
destination.BeginWrite();
/* Process data */
while (m_decompressor.Output_scanline < m_decompressor.Output_height)
{
byte[][] row = jpeg_common_struct.AllocJpegSamples(m_decompressor.Output_width * m_decompressor.Output_components, 1);
m_decompressor.jpeg_read_scanlines(row, 1);
destination.ProcessPixelsRow(row[0]);
}
destination.EndWrite();
// Finish decompression and release memory.
m_decompressor.jpeg_finish_decompress();
}
public void SetImageAttributes(LoadedImageAttributes parameters)
{
m_jpegImage.Width = parameters.Width;
m_jpegImage.Height = parameters.Height;
m_jpegImage.BitsPerComponent = 8;
m_jpegImage.ComponentsPerSample = (byte)parameters.ComponentsPerSample;
m_jpegImage.Colorspace = parameters.Colorspace;
}
public void SetImageAttributes(LoadedImageAttributes parameters)
{
m_jpegImage.Width = parameters.Width;
m_jpegImage.Height = parameters.Height;
m_jpegImage.BitsPerComponent = 8;
m_jpegImage.ComponentsPerSample = (byte)parameters.ComponentsPerSample;
m_jpegImage.Colorspace = parameters.Colorspace;
}
public void SetImageAttributes(LoadedImageAttributes parameters)
{
if (parameters == null)
{
throw new ArgumentNullException("parameters");
}
m_parameters = parameters;
}
public void SetImageAttributes(LoadedImageAttributes parameters)
{
if (parameters.Width > Image.MaxWidth || parameters.Height > Image.MaxHeight)
{
throw new ArgumentOutOfRangeException(
$"The input jpg '{ parameters.Width }x{ parameters.Height }' is bigger then the max allowed size '{ Image.MaxWidth }x{ Image.MaxHeight }'");
}
m_jpegImage.Width = parameters.Width;
m_jpegImage.Height = parameters.Height;
m_jpegImage.BitsPerComponent = 8;
m_jpegImage.ComponentsPerSample = (byte)parameters.ComponentsPerSample;
m_jpegImage.Colorspace = parameters.Colorspace;
}
public void SetImageAttributes(LoadedImageAttributes parameters)
{
if (parameters.Width > Image.MaxWidth || parameters.Height > Image.MaxHeight)
{
throw new ArgumentOutOfRangeException(
$"The input jpg '{ parameters.Width }x{ parameters.Height }' is bigger then the max allowed size '{ Image.MaxWidth }x{ Image.MaxHeight }'");
}
m_jpegImage.Width = parameters.Width;
m_jpegImage.Height = parameters.Height;
m_jpegImage.BitsPerComponent = 8;
m_jpegImage.ComponentsPerSample = (byte)parameters.ComponentsPerSample;
m_jpegImage.Colorspace = parameters.Colorspace;
}
private LoadedImageAttributes getImageParametersFromDecompressor()
{
LoadedImageAttributes result = new LoadedImageAttributes();
result.Colorspace = (Colorspace)m_decompressor.Out_color_space;
result.QuantizeColors = m_decompressor.Quantize_colors;
result.Width = m_decompressor.Output_width;
result.Height = m_decompressor.Output_height;
result.ComponentsPerSample = m_decompressor.Out_color_components;
result.Components = m_decompressor.Output_components;
result.ActualNumberOfColors = m_decompressor.Actual_number_of_colors;
result.Colormap = m_decompressor.Colormap;
result.DensityUnit = m_decompressor.Density_unit;
result.DensityX = m_decompressor.X_density;
result.DensityY = m_decompressor.Y_density;
return(result);
}
private LoadedImageAttributes getImageParametersFromDecompressor()
{
LoadedImageAttributes result = new LoadedImageAttributes();
result.Colorspace = (Colorspace)m_decompressor.Out_color_space;
result.QuantizeColors = m_decompressor.Quantize_colors;
result.Width = m_decompressor.Output_width;
result.Height = m_decompressor.Output_height;
result.ComponentsPerSample = m_decompressor.Out_color_components;
result.Components = m_decompressor.Output_components;
result.ActualNumberOfColors = m_decompressor.Actual_number_of_colors;
result.Colormap = m_decompressor.Colormap;
result.DensityUnit = m_decompressor.Density_unit;
result.DensityX = m_decompressor.X_density;
result.DensityY = m_decompressor.Y_density;
return result;
}
public void SetImageAttributes(LoadedImageAttributes parameters)
{
m_parameters = parameters ?? throw new ArgumentNullException(nameof(parameters));
}
