示例#1
0
            internal void LoadPixelData(BinaryReverseReader reverseReader)
            {
                Debug.WriteLine("Channel.LoadPixelData started at " + reverseReader.BaseStream.Position.ToString(CultureInfo.InvariantCulture));

                Data = reverseReader.ReadBytes(Length);

                using (BinaryReverseReader imageReader = DataReader)
                {
                    ImageCompression = (ImageCompression)imageReader.ReadInt16();

                    Int32 bytesPerRow = 0;

                    switch (Layer.PsdFile.Depth)
                    {
                    case 1:
                        bytesPerRow = Layer.Rect.Width;                                //NOT sure
                        break;

                    case 8:
                        bytesPerRow = Layer.Rect.Width;
                        break;

                    case 16:
                        bytesPerRow = Layer.Rect.Width * 2;
                        break;
                    }

                    ImageData = new Byte[Layer.Rect.Height * bytesPerRow];

                    switch (ImageCompression)
                    {
                    case ImageCompression.Raw:
                        imageReader.Read(ImageData, 0, ImageData.Length);
                        break;

                    case ImageCompression.Rle:
                    {
                        Int32[] rowLengthList = new Int32[Layer.Rect.Height];

                        for (Int32 i = 0; i < rowLengthList.Length; i++)
                        {
                            rowLengthList[i] = imageReader.ReadInt16();
                        }

                        for (Int32 i = 0; i < Layer.Rect.Height; i++)
                        {
                            Int32 rowIndex = i * Layer.Rect.Width;
                            RleHelper.DecodedRow(imageReader.BaseStream, ImageData, rowIndex, bytesPerRow);

                            //if (rowLenghtList[i] % 2 == 1)
                            //  readerImg.ReadByte();
                        }
                    }
                    break;
                    }
                }
            }
示例#2
0
        public PsdFile Load(Stream stream)
        {
            //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(CultureInfo.InvariantCulture));

            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 ((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.
            _channels = reader.ReadInt16();
            _rows     = reader.ReadInt32();
            _columns  = reader.ReadInt32();
            _depth    = reader.ReadInt16();
            ColorMode = (ColorModes)reader.ReadInt16();

            //by end of headers, the reader has read 26 bytes into the file.
            #endregion             //End Headers

            #region "ColorModeData"
            Debug.WriteLine("LoadColorModeData started at " + reader.BaseStream.Position.ToString(CultureInfo.InvariantCulture));

            UInt32 paletteLength = reader.ReadUInt32();             //readUint32() advances the reader 4 bytes.
            if (paletteLength > 0)
            {
                ColorModeData = reader.ReadBytes((Int32)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(CultureInfo.InvariantCulture));

            _imageResources.Clear();

            UInt32 imgResLength = reader.ReadUInt32();
            if (imgResLength <= 0)
            {
                return(null);
            }

            Int64 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;
                }

                _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(CultureInfo.InvariantCulture));
            UInt32 layersAndMaskLength = reader.ReadUInt32();

            if (layersAndMaskLength <= 0)
            {
                return(null);
            }

            //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(CultureInfo.InvariantCulture));

            ImageCompression = (ImageCompression)reader.ReadInt16();

            ImageData = new Byte[_channels][];

            //---------------------------------------------------------------

            if (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 += _rows * _channels * 2;
            }

            //---------------------------------------------------------------

            Int32 bytesPerRow = 0;

            switch (_depth)
            {
            case 1:
                bytesPerRow = _columns;                        //NOT Shure
                break;

            case 8:
                bytesPerRow = _columns;
                break;

            case 16:
                bytesPerRow = _columns * 2;
                break;
            }

            //---------------------------------------------------------------

            for (Int32 ch = 0; ch < _channels; ch++)
            {
                ImageData[ch] = new Byte[_rows * bytesPerRow];

                switch (ImageCompression)
                {
                case ImageCompression.Raw:
                    reader.Read(ImageData[ch], 0, ImageData[ch].Length);
                    break;

                case ImageCompression.Rle:
                {
                    for (Int32 i = 0; i < _rows; i++)
                    {
                        Int32 rowIndex = i * _columns;
                        RleHelper.DecodedRow(reader.BaseStream, ImageData[ch], rowIndex, bytesPerRow);
                    }
                }
                break;
                }
            }

            #endregion             //End LoadingFinalImage

            return(this);
        }         //end Load()
示例#3
0
            internal void LoadPixelData(BinaryReverseReader reader)
            {
                Debug.WriteLine("Mask.LoadPixelData started at " + reader.BaseStream.Position.ToString(CultureInfo.InvariantCulture));

                if (Rect.IsEmpty || Layer.SortedChannels.ContainsKey(-2) == false)
                {
                    return;
                }

                Channel maskChannel = Layer.SortedChannels[-2];


                maskChannel.Data = reader.ReadBytes(maskChannel.Length);


                using (BinaryReverseReader readerImg = maskChannel.DataReader)
                {
                    maskChannel.ImageCompression = (ImageCompression)readerImg.ReadInt16();

                    int bytesPerRow = 0;

                    switch (Layer.PsdFile.Depth)
                    {
                    case 1:
                        bytesPerRow = Rect.Width;                                //NOT Shure
                        break;

                    case 8:
                        bytesPerRow = Rect.Width;
                        break;

                    case 16:
                        bytesPerRow = Rect.Width * 2;
                        break;
                    }

                    maskChannel.ImageData = new byte[Rect.Height * bytesPerRow];
                    // Fill Array
                    for (int i = 0; i < maskChannel.ImageData.Length; i++)
                    {
                        maskChannel.ImageData[i] = 0xAB;
                    }

                    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[Rect.Height];

                        for (int i = 0; i < rowLenghtList.Length; i++)
                        {
                            rowLenghtList[i] = readerImg.ReadInt16();
                        }

                        for (int i = 0; i < Rect.Height; i++)
                        {
                            int rowIndex = i * Rect.Width;
                            RleHelper.DecodedRow(readerImg.BaseStream, maskChannel.ImageData, rowIndex, bytesPerRow);
                        }
                    }
                    break;
                    }

                    ImageData = (byte[])maskChannel.ImageData.Clone();
                }
            }