/// <summary> /// Creates <see cref="JpegImage"/> from file with an arbitrary image /// </summary> /// <param name="fileName">Path to file with image in /// arbitrary format (BMP, Jpeg, GIF, PNG, TIFF, e.t.c)</param> //public JpegImage(string fileName) //{ // if (fileName == null) // throw new ArgumentNullException("fileName"); // using (FileStream input = new FileStream(fileName, FileMode.Open)) // createFromStream(input); //} /// <summary> /// Creates <see cref="JpegImage"/> from pixels /// </summary> /// <param name="sampleData">Description of pixels.</param> /// <param name="colorspace">Colorspace of image.</param> /// <seealso cref="SampleRow"/> public JpegImage(SampleRow[] sampleData, Colorspace colorspace) { if (sampleData == null) { throw new ArgumentNullException("sampleData"); } if (sampleData.Length == 0) { throw new ArgumentException("sampleData must be no empty"); } if (colorspace == Colorspace.Unknown) { throw new ArgumentException("Unknown colorspace"); } m_rows = new List <SampleRow>(sampleData); SampleRow firstRow = m_rows[0]; m_width = firstRow.Length; m_height = m_rows.Count; Sample firstSample = firstRow[0]; m_bitsPerComponent = firstSample.BitsPerComponent; m_componentsPerSample = firstSample.ComponentCount; m_colorspace = colorspace; }
/// <inheritdoc/> public void Encode(ImageBase image, Stream stream) { Guard.NotNull(image, nameof(image)); Guard.NotNull(stream, nameof(stream)); int imageWidth = image.Width; int imageHeight = image.Height; SampleRow[] rows = new SampleRow[imageHeight]; Parallel.For( 0, imageHeight, y => { byte[] samples = new byte[imageWidth * 3]; for (int x = 0; x < imageWidth; x++) { Bgra32 color = Color.ToNonPremultiplied(image[x, y]); int start = x * 3; samples[start] = color.R; samples[start + 1] = color.G; samples[start + 2] = color.B; } rows[y] = new SampleRow(samples, imageWidth, 8, 3); }); using (JpegImage jpg = new JpegImage(rows, Colorspace.RGB)) { jpg.WriteJpeg(stream, new CompressionParameters { Quality = this.Quality }); } }
public void Encode(Image image, Stream stream) { int pixelWidth = image.Width; int pixelHeight = image.Height; byte[] sourcePixels = image.Pixels; SampleRow[] rows = new SampleRow[pixelHeight]; for (int y = 0; y < pixelHeight; y++) { byte[] samples = new byte[pixelWidth * 3]; for (int x = 0; x < pixelWidth; x++) { int start = x * 3; int source = (y * pixelWidth + x) * 4; samples[start] = sourcePixels[source + 2]; samples[start + 1] = sourcePixels[source + 1]; samples[start + 2] = sourcePixels[source]; } rows[y] = new SampleRow(samples, pixelWidth, 8, 3); } JpegImage jpg = new JpegImage(rows, Colorspace.RGB); jpg.WriteJpeg(stream, new CompressionParameters { Quality = Quality }); }
/// <summary> /// Needs for DecompressorToJpegImage class /// </summary> internal void addSampleRow(SampleRow row) { if (row == null) { throw new ArgumentNullException("row"); } m_rows.Add(row); }
/// <summary> /// Needs for DecompressorToJpegImage class /// </summary> internal void AddSampleRow(SampleRow row) { if (row is null) { throw new ArgumentNullException(nameof(row)); } m_rows.Add(row); }
public void ProcessPixelsRow(byte[] row) { SampleRow samplesRow = new SampleRow(row, m_jpegImage.Width, m_jpegImage.BitsPerComponent, m_jpegImage.ComponentsPerSample); m_jpegImage.addSampleRow(samplesRow); }
public byte[] GetPixelRow() { SampleRow row = _samples[m_currentRow]; List <byte> result = new List <byte>(); for (int i = 0; i < row.Length; ++i) { //Sample sample = row[i]; row.WriteToList(result); //for (int j = 0; j < sample.ComponentCount; ++j) // result.Add((byte)sample[j]); } ++m_currentRow; return(result.ToArray()); }
/// <summary> /// Creates <see cref="JpegImage"/> from pixels /// </summary> /// <param name="sampleData">Description of pixels.</param> /// <param name="colorspace">Colorspace of image.</param> /// <seealso cref="SampleRow"/> public JpegImage(SampleRow[] sampleData, Colorspace colorspace) { if (sampleData == null) throw new ArgumentNullException("sampleData"); if (sampleData.Length == 0) throw new ArgumentException("sampleData must be no empty"); if (colorspace == Colorspace.Unknown) throw new ArgumentException("Unknown colorspace"); m_rows = new List<SampleRow>(sampleData); SampleRow firstRow = m_rows[0]; m_width = firstRow.Length; m_height = m_rows.Count; Sample firstSample = firstRow[0]; m_bitsPerComponent = firstSample.BitsPerComponent; m_componentsPerSample = firstSample.ComponentCount; m_colorspace = colorspace; }
/// <summary> /// Needs for DecompressorToJpegImage class /// </summary> internal void addSampleRow(SampleRow row) { if (row == null) throw new ArgumentNullException("row"); m_rows.Add(row); }
private static JpegImage createImageFromPixels() { byte[] rowData = new byte[96]; for (int i = 0; i < rowData.Length; ++i) { if (i < 5) rowData[i] = 0xE4; else if (i < 15) rowData[i] = 0xAB; else if (i < 35) rowData[i] = 0x00; else if (i < 55) rowData[i] = 0x65; else rowData[i] = 0xF0; } const int width = 24; const int height = 25; const byte bitsPerComponent = 8; const byte componentsPerSample = 4; const Colorspace colorspace = Colorspace.CMYK; SampleRow row = new SampleRow(rowData, width, bitsPerComponent, componentsPerSample); SampleRow[] rows = new SampleRow[height]; for (int i = 0; i < rows.Length; ++i) rows[i] = row; JpegImage jpegImage = new JpegImage(rows, colorspace); Assert.AreEqual(jpegImage.Width, width); Assert.AreEqual(jpegImage.Height, rows.Length); Assert.AreEqual(jpegImage.BitsPerComponent, bitsPerComponent); Assert.AreEqual(jpegImage.ComponentsPerSample, componentsPerSample); Assert.AreEqual(jpegImage.Colorspace, colorspace); return jpegImage; }