////////////////////////////////////////////////////////////////// internal void LoadPixelData(BinaryReverseReader reader) { Debug.WriteLine("Channel.LoadPixelData started at " + reader.BaseStream.Position.ToString()); m_data = reader.ReadBytes((int)Length); using (BinaryReverseReader readerImg = DataReader) { m_imageCompression = (ImageCompression)readerImg.ReadInt16(); int bytesPerRow = 0; switch (m_layer.PsdFile.Depth) { case 1: bytesPerRow = m_layer.m_rect.Width; //NOT Shure break; case 8: bytesPerRow = m_layer.m_rect.Width; break; case 16: bytesPerRow = m_layer.m_rect.Width * 2; break; } m_imageData = new byte[m_layer.m_rect.Height * bytesPerRow]; switch (m_imageCompression) { case ImageCompression.Raw: readerImg.Read(m_imageData, 0, m_imageData.Length); break; case ImageCompression.Rle: { int[] rowLenghtList = new int[m_layer.m_rect.Height]; for (int i = 0; i < rowLenghtList.Length; i++) { rowLenghtList[i] = readerImg.ReadInt16(); } for (int i = 0; i < m_layer.m_rect.Height; i++) { int rowIndex = i * m_layer.m_rect.Width; RleHelper.DecodedRow(readerImg.BaseStream, m_imageData, rowIndex, bytesPerRow); //if (rowLenghtList[i] % 2 == 1) // readerImg.ReadByte(); } } break; default: break; } } }
public void Load(string filename) { using (FileStream stream = new FileStream(filename, FileMode.Open)) { //binary reverse reader reads data types in big-endian format. BinaryReverseReader reader = new BinaryReverseReader(stream); #region "Headers" //The headers area is used to check for a valid PSD file Debug.WriteLine("LoadHeader started at " + reader.BaseStream.Position.ToString()); string signature = new string(reader.ReadChars(4)); if (signature != "8BPS") { throw new IOException("Bad or invalid file stream supplied"); } //get the version number, should be 1 always if ((m_version = reader.ReadInt16()) != 1) { throw new IOException("Invalid version number supplied"); } //get rid of the 6 bytes reserverd in PSD format reader.BaseStream.Position += 6; //get the rest of the information from the PSD file. //Everytime ReadInt16() is called, it reads 2 bytes. //Everytime ReadInt32() is called, it reads 4 bytes. m_channels = reader.ReadInt16(); m_rows = reader.ReadInt32(); m_columns = reader.ReadInt32(); m_depth = reader.ReadInt16(); m_colorMode = (ColorModes)reader.ReadInt16(); //by end of headers, the reader has read 26 bytes into the file. #endregion //End Headers #region "ColorModeData" /// <summary> /// If ColorMode is ColorModes.Indexed, the following 768 bytes will contain /// a 256-color palette. If the ColorMode is ColorModes.Duotone, the data /// following presumably consists of screen parameters and other related information. /// Unfortunately, it is intentionally not documented by Adobe, and non-Photoshop /// readers are advised to treat duotone images as gray-scale images. /// </summary> Debug.WriteLine("LoadColorModeData started at " + reader.BaseStream.Position.ToString()); uint paletteLength = reader.ReadUInt32(); //readUint32() advances the reader 4 bytes. if (paletteLength > 0) { ColorModeData = reader.ReadBytes((int)paletteLength); } #endregion //End ColorModeData #region "Loading Image Resources" //This part takes extensive use of classes that I didn't write therefore //I can't document much on what they do. Debug.WriteLine("LoadingImageResources started at " + reader.BaseStream.Position.ToString()); m_imageResources.Clear(); uint imgResLength = reader.ReadUInt32(); if (imgResLength <= 0) { return; } long startPosition = reader.BaseStream.Position; while ((reader.BaseStream.Position - startPosition) < imgResLength) { ImageResource imgRes = new ImageResource(reader); ResourceIDs resID = (ResourceIDs)imgRes.ID; switch (resID) { case ResourceIDs.ResolutionInfo: imgRes = new ResolutionInfo(imgRes); break; case ResourceIDs.Thumbnail1: case ResourceIDs.Thumbnail2: imgRes = new Thumbnail(imgRes); break; case ResourceIDs.AlphaChannelNames: imgRes = new AlphaChannels(imgRes); break; } m_imageResources.Add(imgRes); } // make sure we are not on a wrong offset, so set the stream position // manually reader.BaseStream.Position = startPosition + imgResLength; #endregion //End LoadingImageResources #region "Layer and Mask Info" //We are gonna load up all the layers and masking of the PSD now. Debug.WriteLine("LoadLayerAndMaskInfo - Part1 started at " + reader.BaseStream.Position.ToString()); uint layersAndMaskLength = reader.ReadUInt32(); if (layersAndMaskLength <= 0) { return; } //new start position startPosition = reader.BaseStream.Position; //Lets start by loading up all the layers LoadLayers(reader); //we are done the layers, load up the masks LoadGlobalLayerMask(reader); // make sure we are not on a wrong offset, so set the stream position // manually reader.BaseStream.Position = startPosition + layersAndMaskLength; #endregion //End Layer and Mask info #region "Loading Final Image" //we have loaded up all the information from the PSD file //into variables we can use later on. //lets finish loading the raw data that defines the image //in the picture. Debug.WriteLine("LoadImage started at " + reader.BaseStream.Position.ToString()); m_imageCompression = (ImageCompression)reader.ReadInt16(); m_imageData = new byte[m_channels][]; //--------------------------------------------------------------- if (m_imageCompression == ImageCompression.Rle) { // The RLE-compressed data is proceeded by a 2-byte data count for each row in the data, // which we're going to just skip. reader.BaseStream.Position += m_rows * m_channels * 2; } //--------------------------------------------------------------- int bytesPerRow = 0; switch (m_depth) { case 1: bytesPerRow = m_columns; //NOT Shure break; case 8: bytesPerRow = m_columns; break; case 16: bytesPerRow = m_columns * 2; break; } //--------------------------------------------------------------- for (int ch = 0; ch < m_channels; ch++) { m_imageData[ch] = new byte[m_rows * bytesPerRow]; switch (m_imageCompression) { case ImageCompression.Raw: reader.Read(m_imageData[ch], 0, m_imageData[ch].Length); break; case ImageCompression.Rle: { for (int i = 0; i < m_rows; i++) { int rowIndex = i * m_columns; RleHelper.DecodedRow(reader.BaseStream, m_imageData[ch], rowIndex, bytesPerRow); } } break; default: break; } } #endregion //End LoadingFinalImage } } //end Load()
internal void LoadPixelData(BinaryReverseReader reader) { Debug.WriteLine("Mask.LoadPixelData started at " + reader.BaseStream.Position.ToString()); if (m_rect.IsEmpty || m_layer.SortedChannels.ContainsKey(-2) == false) { return; } Channel maskChannel = m_layer.SortedChannels[-2]; maskChannel.Data = reader.ReadBytes((int)maskChannel.Length); using (BinaryReverseReader readerImg = maskChannel.DataReader) { maskChannel.ImageCompression = (ImageCompression)readerImg.ReadInt16(); int bytesPerRow = 0; switch (m_layer.PsdFile.Depth) { case 1: bytesPerRow = m_rect.Width; //NOT Shure break; case 8: bytesPerRow = m_rect.Width; break; case 16: bytesPerRow = m_rect.Width * 2; break; } maskChannel.ImageData = new byte[m_rect.Height * bytesPerRow]; // Fill Array for (int i = 0; i < maskChannel.ImageData.Length; i++) { maskChannel.ImageData[i] = 0xAB; } m_imageData = (byte[])maskChannel.ImageData.Clone(); switch (maskChannel.ImageCompression) { case ImageCompression.Raw: readerImg.Read(maskChannel.ImageData, 0, maskChannel.ImageData.Length); break; case ImageCompression.Rle: { int[] rowLenghtList = new int[m_rect.Height]; for (int i = 0; i < rowLenghtList.Length; i++) { rowLenghtList[i] = readerImg.ReadInt16(); } for (int i = 0; i < m_rect.Height; i++) { int rowIndex = i * m_rect.Width; RleHelper.DecodedRow(readerImg.BaseStream, maskChannel.ImageData, rowIndex, bytesPerRow); } } break; default: break; } m_imageData = (byte[])maskChannel.ImageData.Clone(); } }