/// <summary>
/// Compresses any image described as ICompressSource to JPEG
/// </summary>
/// <param name="source">Contains description of input image</param>
/// <param name="output">Stream for output of compressed JPEG</param>
public void Compress(IRawImage source, Stream output)
{
if (source == null)
{
throw new ArgumentNullException("source");
}
if (output == null)
{
throw new ArgumentNullException("output");
}
m_compressor.Image_width = source.Width;
m_compressor.Image_height = source.Height;
m_compressor.In_color_space = (J_COLOR_SPACE)source.Colorspace;
m_compressor.Input_components = source.ComponentsPerPixel;
//m_compressor.Data_precision = source.DataPrecision;
m_compressor.jpeg_set_defaults();
//we need to set density parameters after setting of default jpeg parameters
//m_compressor.Density_unit = source.DensityUnit;
//m_compressor.X_density = (short)source.DensityX;
//m_compressor.Y_density = (short)source.DensityY;
applyParameters(m_compressionParameters);
// Specify data destination for compression
m_compressor.jpeg_stdio_dest(output);
// Start compression
m_compressor.jpeg_start_compress(true);
// Process pixels
source.BeginRead();
while (m_compressor.Next_scanline < m_compressor.Image_height)
{
byte[] row = source.GetPixelRow();
if (row == null)
{
#if !SILVERLIGHT
throw new InvalidDataException("Row of pixels is null");
#else
// System.IO.InvalidDataException is not available in Silverlight
throw new IOException("Row of pixels is null");
#endif
}
byte[][] rowForDecompressor = new byte[1][];
rowForDecompressor[0] = row;
m_compressor.jpeg_write_scanlines(rowForDecompressor, 1);
}
source.EndRead();
// Finish compression and release memory
m_compressor.jpeg_finish_compress();
}
/// <summary>
/// Compresses any image described as ICompressSource to JPEG
/// </summary>
/// <param name="source">Contains description of input image</param>
/// <param name="output">Stream for output of compressed JPEG</param>
public void Compress(IRawImage source, Stream output)
{
if (source is null)
{
throw new ArgumentNullException(nameof(source));
}
if (output is null)
{
throw new ArgumentNullException(nameof(output));
}
ClassicCompressor.Image_width = source.Width;
ClassicCompressor.Image_height = source.Height;
ClassicCompressor.In_color_space = (JColorSpace)source.Colorspace;
ClassicCompressor.Input_components = source.ComponentsPerPixel;
//m_compressor.Data_precision = source.DataPrecision;
ClassicCompressor.JpegSetDefaults();
//we need to set density parameters after setting of default jpeg parameters
//m_compressor.Density_unit = source.DensityUnit;
//m_compressor.X_density = (short)source.DensityX;
//m_compressor.Y_density = (short)source.DensityY;
applyParameters(m_compressionParameters);
// Specify data destination for compression
ClassicCompressor.JpegStdioDest(output);
// Start compression
ClassicCompressor.JpegStartCompression(true);
// Process pixels
source.BeginRead();
while (ClassicCompressor.Next_scanline < ClassicCompressor.Image_height)
{
var row = source.GetPixelRow();
var rowForDecompressor = new byte[1][];
rowForDecompressor[0] = row ?? throw new InvalidDataException("Row of pixels is null");
ClassicCompressor.JpegWriteScanlines(rowForDecompressor, 1);
}
source.EndRead();
// Finish compression and release memory
ClassicCompressor.JpegFinishCompress();
}
/// <summary>
/// Compresses any image described as ICompressSource to JPEG
/// </summary>
/// <param name="source">Contains description of input image</param>
/// <param name="output">Stream for output of compressed JPEG</param>
public void Compress(IRawImage source, Stream output)
{
if (source == null)
throw new ArgumentNullException("source");
if (output == null)
throw new ArgumentNullException("output");
m_compressor.Image_width = source.Width;
m_compressor.Image_height = source.Height;
m_compressor.In_color_space = (J_COLOR_SPACE)source.Colorspace;
m_compressor.Input_components = source.ComponentsPerPixel;
//m_compressor.Data_precision = source.DataPrecision;
// TODO: This method call is messy. It doesn't so much set blind defaults, because a number of the calls it makes
// react to class fields/properties set by CompressionParameters.
// This is even odder because many of the "defaults" are then overridden in applyParameters, below.
// Why does this method exist? Seems like all calls that overlap with applyParameters should be removed.
m_compressor.jpeg_set_defaults();
//we need to set density parameters after setting of default jpeg parameters
//m_compressor.Density_unit = source.DensityUnit;
//m_compressor.X_density = (short)source.DensityX;
//m_compressor.Y_density = (short)source.DensityY;
applyParameters(m_compressionParameters);
// Specify data destination for compression
m_compressor.jpeg_stdio_dest(output);
// Start compression
m_compressor.jpeg_start_compress(true);
// Process pixels
source.BeginRead();
while (m_compressor.Next_scanline < m_compressor.Image_height)
{
byte[] row = source.GetPixelRow();
if (row == null)
{
#if !SILVERLIGHT
throw new InvalidDataException("Row of pixels is null");
#else
// System.IO.InvalidDataException is not available in Silverlight
throw new IOException("Row of pixels is null");
#endif
}
byte[][] rowForDecompressor = new byte[1][];
rowForDecompressor[0] = row;
m_compressor.jpeg_write_scanlines(rowForDecompressor, 1);
}
source.EndRead();
// Finish compression and release memory
m_compressor.jpeg_finish_compress();
}
/// <summary>
/// Compresses any image described as ICompressSource to JPEG
/// </summary>
/// <param name="source">Contains description of input image</param>
/// <param name="output">Stream for output of compressed JPEG</param>
public void Compress(IRawImage source, Stream output)
{
if (source == null)
throw new ArgumentNullException("source");
if (output == null)
throw new ArgumentNullException("output");
m_compressor.Image_width = source.Width;
m_compressor.Image_height = source.Height;
m_compressor.In_color_space = (J_COLOR_SPACE)source.Colorspace;
m_compressor.Input_components = source.ComponentsPerPixel;
//m_compressor.Data_precision = source.DataPrecision;
m_compressor.jpeg_set_defaults();
//we need to set density parameters after setting of default jpeg parameters
//m_compressor.Density_unit = source.DensityUnit;
//m_compressor.X_density = (short)source.DensityX;
//m_compressor.Y_density = (short)source.DensityY;
applyParameters(m_compressionParameters);
// Specify data destination for compression
m_compressor.jpeg_stdio_dest(output);
// Start compression
m_compressor.jpeg_start_compress(true);
// Process pixels
source.BeginRead();
while (m_compressor.Next_scanline < m_compressor.Image_height)
{
byte[] row = source.GetPixelRow();
if (row == null)
{
#if !SILVERLIGHT
throw new InvalidDataException("Row of pixels is null");
#else
// System.IO.InvalidDataException is not available in Silverlight
throw new IOException("Row of pixels is null");
#endif
}
byte[][] rowForDecompressor = new byte[1][];
rowForDecompressor[0] = row;
m_compressor.jpeg_write_scanlines(rowForDecompressor, 1);
}
source.EndRead();
// Finish compression and release memory
m_compressor.jpeg_finish_compress();
}
/// <summary>
/// Compresses any image described as ICompressSource to JPEG
/// </summary>
/// <param name="source">Contains description of input image</param>
/// <param name="output">Stream for output of compressed JPEG</param>
public void Compress(IRawImage source, Stream output)
{
if (source == null)
{
throw new ArgumentNullException("source");
}
if (output == null)
{
throw new ArgumentNullException("output");
}
m_compressor.Image_width = source.Width;
m_compressor.Image_height = source.Height;
m_compressor.In_color_space = (J_COLOR_SPACE)source.Colorspace;
m_compressor.Input_components = source.ComponentsPerPixel;
//m_compressor.Data_precision = source.DataPrecision;
// TODO: This method call is messy. It doesn't so much set blind defaults, because a number of the calls it makes
// react to class fields/properties set by CompressionParameters.
// This is even odder because many of the "defaults" are then overridden in applyParameters, below.
// Why does this method exist? Seems like all calls that overlap with applyParameters should be removed.
m_compressor.jpeg_set_defaults();
//we need to set density parameters after setting of default jpeg parameters
//m_compressor.Density_unit = source.DensityUnit;
//m_compressor.X_density = (short)source.DensityX;
//m_compressor.Y_density = (short)source.DensityY;
applyParameters(m_compressionParameters);
// Specify data destination for compression
m_compressor.jpeg_stdio_dest(output);
// Start compression
m_compressor.jpeg_start_compress(true);
// Process pixels
source.BeginRead();
while (m_compressor.Next_scanline < m_compressor.Image_height)
{
byte[] row = source.GetPixelRow();
if (row == null)
{
#if !SILVERLIGHT
throw new InvalidDataException("Row of pixels is null");
#else
// System.IO.InvalidDataException is not available in Silverlight
throw new IOException("Row of pixels is null");
#endif
}
byte[][] rowForDecompressor = new byte[1][];
rowForDecompressor[0] = row;
m_compressor.jpeg_write_scanlines(rowForDecompressor, 1);
}
source.EndRead();
// Finish compression and release memory
m_compressor.jpeg_finish_compress();
}