///////////////////////////////////////////////////////////////////////////
private void LoadImage(BinaryReverseReader reader)
{
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 = ImageDecoder.BytesFromBits(m_columns);
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 * bytesPerRow;
RleHelper.DecodedRow(reader.BaseStream, m_imageData[ch], rowIndex, bytesPerRow);
}
}
break;
default:
break;
}
}
}
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 = ImageDecoder.BytesFromBits(m_layer.m_rect.Width);
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:
{
uint[] rowLengthList = new uint[m_rect.Height];
for (int i = 0; i < rowLengthList.Length; i++)
{
rowLengthList[i] = readerImg.ReadUInt16();
}
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();
}
}
//////////////////////////////////////////////////////////////////
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();
m_bytesPerRow = 0;
switch (m_layer.PsdFile.Depth)
{
case 1:
m_bytesPerRow = ImageDecoder.BytesFromBits(m_layer.m_rect.Width);
break;
case 8:
m_bytesPerRow = m_layer.m_rect.Width;
break;
case 16:
m_bytesPerRow = m_layer.m_rect.Width * 2;
break;
}
m_imageData = new byte[m_layer.m_rect.Height * m_bytesPerRow];
switch (m_imageCompression)
{
case ImageCompression.Raw:
readerImg.Read(m_imageData, 0, m_imageData.Length);
break;
case ImageCompression.Rle:
{
m_rowLengthList = new uint[m_layer.m_rect.Height];
uint totalRleLength = 0;
for (int i = 0; i < m_rowLengthList.Length; i++)
{
m_rowLengthList[i] = readerImg.ReadUInt16();
totalRleLength += m_rowLengthList[i];
}
m_data = new byte[totalRleLength];
uint idxData = 0;
for (int i = 0; i < m_layer.m_rect.Height; i++)
{
readerImg.Read(m_data, (int)idxData, (int)m_rowLengthList[i]);
idxData += m_rowLengthList[i];
// The PSD specification states that rows are padded to even sizes.
// However, PSD files generated by Photoshop CS4 do not actually
// follow this stipulation.
}
}
break;
default:
break;
}
}
}
public void CompressImageData()
{
if (m_imageCompression == ImageCompression.Rle)
{
MemoryStream dataStream = new MemoryStream();
BinaryReverseWriter writer = new BinaryReverseWriter(dataStream);
// we will write the correct lengths later, so remember
// the position
long lengthPosition = writer.BaseStream.Position;
int[] rleRowLengths = new int[m_layer.m_rect.Height];
for (int i = 0; i < rleRowLengths.Length; i++)
{
writer.Write((short)0x1234);
}
//---------------------------------------------------------------
int bytesPerRow = 0;
switch (m_layer.PsdFile.Depth)
{
case 1:
bytesPerRow = ImageDecoder.BytesFromBits(m_layer.m_rect.Width);
break;
case 8:
bytesPerRow = m_layer.m_rect.Width;
break;
case 16:
bytesPerRow = m_layer.m_rect.Width * 2;
break;
}
//---------------------------------------------------------------
for (int row = 0; row < m_layer.m_rect.Height; row++)
{
int rowIndex = row * m_layer.m_rect.Width;
rleRowLengths[row] = RleHelper.EncodedRow(writer.BaseStream, m_imageData, rowIndex, bytesPerRow);
}
//---------------------------------------------------------------
long endPosition = writer.BaseStream.Position;
writer.BaseStream.Position = lengthPosition;
for (int i = 0; i < rleRowLengths.Length; i++)
{
writer.Write((short)rleRowLengths[i]);
}
writer.BaseStream.Position = endPosition;
dataStream.Close();
m_data = dataStream.ToArray();
dataStream.Dispose();
}
else
{
m_data = (byte[])m_imageData.Clone();
}
}
///////////////////////////////////////////////////////////////////////////
/// <summary>
/// Builds a color instance from the specified layer and position. Adds alpha value if channel exists.
/// </summary>
/// <param name="layer"></param>
/// <param name="pos"></param>
/// <returns></returns>
private static Color GetColor(LayerWrapper layer, int pos)
{
Color c = Color.White;
switch (layer.colorMode)
{
case PsdFile.ColorModes.RGB:
c = Color.FromArgb(layer.ch0bytes[pos],
layer.ch1bytes[pos],
layer.ch2bytes[pos]);
break;
case PsdFile.ColorModes.CMYK:
c = CMYKToRGB(layer.ch0bytes[pos],
layer.ch1bytes[pos],
layer.ch2bytes[pos],
layer.ch3bytes[pos]);
break;
case PsdFile.ColorModes.Multichannel:
c = CMYKToRGB(layer.ch0bytes[pos],
layer.ch1bytes[pos],
layer.ch2bytes[pos],
0);
break;
case PsdFile.ColorModes.Bitmap:
byte bwValue = ImageDecoder.GetBitmapValue(layer.ch0bytes, pos);
c = Color.FromArgb(bwValue, bwValue, bwValue);
break;
case PsdFile.ColorModes.Grayscale:
case PsdFile.ColorModes.Duotone:
c = Color.FromArgb(layer.ch0bytes[pos],
layer.ch0bytes[pos],
layer.ch0bytes[pos]);
break;
case PsdFile.ColorModes.Indexed:
{
int index = (int)layer.ch0bytes[pos];
c = Color.FromArgb((int)layer.colorModeData[index],
layer.colorModeData[index + 256],
layer.colorModeData[index + 2 * 256]);
}
break;
case PsdFile.ColorModes.Lab:
{
c = LabToRGB(layer.ch0bytes[pos],
layer.ch1bytes[pos],
layer.ch2bytes[pos]);
}
break;
}
if (layer.hasalpha)
{
c = Color.FromArgb(layer.alphabytes[pos], c);
}
return(c);
}
