private void LoadPSPFile(Stream input)
{
byte[] sigBytes = new byte[32];
input.ProperRead(sigBytes, 0, sigBytes.Length);
if (!CheckSig(sigBytes))
{
throw new FormatException(Properties.Resources.InvalidPSPFile);
}
using (BufferedBinaryReader reader = new BufferedBinaryReader(input))
{
this.fileHeader = new FileHeader(reader);
while (reader.Position < reader.Length)
{
uint blockSig = reader.ReadUInt32();
if (blockSig != PSPConstants.blockIdentifier)
{
throw new FormatException(Properties.Resources.InvalidBlockSignature);
}
PSPBlockID blockID = (PSPBlockID)reader.ReadUInt16();
uint initialBlockLength = this.fileHeader.Major <= PSPConstants.majorVersion5 ? reader.ReadUInt32() : 0;
uint blockLength = reader.ReadUInt32();
switch (blockID)
{
case PSPBlockID.ImageAttributes:
this.imageAttributes = new GeneralImageAttributes(reader, this.fileHeader.Major);
break;
case PSPBlockID.Creator:
this.creator = new CreatorBlock(reader, blockLength);
break;
case PSPBlockID.ColorPalette:
this.globalPalette = new ColorPaletteBlock(reader, this.fileHeader.Major);
break;
case PSPBlockID.LayerStart:
this.layerBlock = new LayerBlock(reader, this.imageAttributes, this.fileHeader.Major);
break;
case PSPBlockID.ExtendedData:
this.extData = new ExtendedDataBlock(reader, blockLength);
break;
#if DEBUG
case PSPBlockID.CompositeImageBank:
this.compImage = new CompositeImageBlock(reader, this.fileHeader.Major);
break;
#endif
default:
reader.Position += blockLength;
break;
}
}
}
}
/// <summary>
/// Checks that the block type matches the expected <see cref="PSPBlockID"/>.
/// </summary>
/// <param name="blockID">The block identifier.</param>
/// <param name="expected">The expected <see cref="PSPBlockID"/>.</param>
internal static void CheckBlockType(ushort blockID, PSPBlockID expected)
{
if (blockID != (ushort)expected)
{
throw new FormatException(string.Format(Properties.Resources.UnexpectedBlockTypeFormat,
blockID.ToString(CultureInfo.InvariantCulture),
((ushort)expected).ToString(CultureInfo.InvariantCulture),
expected.ToString()));
}
}
public CompositeImageInfoChunk(BufferedBinaryReader br, CompositeImageAttributesChunk attr, ushort majorVersion)
{
this.chunkSize = br.ReadUInt32();
this.bitmapCount = br.ReadUInt16();
this.channelCount = br.ReadUInt16();
this.paletteSubBlock = null;
this.channelBlocks = new ChannelSubBlock[this.channelCount];
long dif = (long)this.chunkSize - HeaderSize;
if (dif > 0)
{
br.Position += dif;
}
int index = 0;
do
{
uint blockSig = br.ReadUInt32();
if (blockSig != PSPConstants.blockIdentifier)
{
throw new FormatException(Properties.Resources.InvalidBlockSignature);
}
PSPBlockID blockType = (PSPBlockID)br.ReadUInt16();
#pragma warning disable IDE0059 // Value assigned to symbol is never used
uint chunkLength = br.ReadUInt32();
#pragma warning restore IDE0059 // Value assigned to symbol is never used
switch (blockType)
{
case PSPBlockID.ColorPalette:
this.paletteSubBlock = new ColorPaletteBlock(br, majorVersion);
break;
case PSPBlockID.Channel:
ChannelSubBlock block = new ChannelSubBlock(br, attr.compressionType, majorVersion);
this.channelBlocks[index] = block;
index++;
break;
}
}while (index < this.channelCount);
}
public ThumbnailBlock(BufferedBinaryReader br)
{
this.width = br.ReadInt32();
this.height = br.ReadInt32();
this.bitDepth = br.ReadUInt16();
this.compressionType = (PSPCompression)br.ReadUInt16();
this.planeCount = br.ReadUInt16();
this.colorCount = br.ReadUInt32();
this.paletteEntryCount = br.ReadUInt32();
this.channelCount = br.ReadUInt16();
this.channelBlocks = new ChannelSubBlock[this.channelCount];
int index = 0;
do
{
uint blockSig = br.ReadUInt32();
if (blockSig != PSPConstants.blockIdentifier)
{
throw new System.FormatException(Properties.Resources.InvalidBlockSignature);
}
PSPBlockID blockType = (PSPBlockID)br.ReadUInt16();
#pragma warning disable IDE0059 // Value assigned to symbol is never used
uint chunkLength = br.ReadUInt32();
#pragma warning restore IDE0059 // Value assigned to symbol is never used
switch (blockType)
{
case PSPBlockID.ColorPalette:
this.paletteSubBlock = new ColorPaletteBlock(br, PSPConstants.majorVersion5);
break;
case PSPBlockID.Channel:
ChannelSubBlock block = new ChannelSubBlock(br, this.compressionType, PSPConstants.majorVersion5);
this.channelBlocks[index] = block;
index++;
break;
}
}while (index < this.channelCount);
}
private static IList <RasterLayerChunk> CountRasterChunks(BufferedBinaryReader reader, int layerCount, ushort majorVersion)
{
List <RasterLayerChunk> rasterChunks = new List <RasterLayerChunk>(layerCount);
int index = 0;
while (index < layerCount)
{
uint head = reader.ReadUInt32();
if (head != PSPConstants.blockIdentifier)
{
throw new FormatException(Properties.Resources.InvalidBlockSignature);
}
PSPBlockID blockID = (PSPBlockID)reader.ReadUInt16();
#pragma warning disable IDE0059 // Value assigned to symbol is never used
uint initialBlockLength = majorVersion <= PSPConstants.majorVersion5 ? reader.ReadUInt32() : 0;
#pragma warning restore IDE0059 // Value assigned to symbol is never used
uint blockLength = reader.ReadUInt32();
if (blockID == PSPBlockID.Layer)
{
index++;
long endOffset = reader.Position + blockLength;
LayerInfoChunk chunk = new LayerInfoChunk(reader, majorVersion);
long currentOffset = reader.Position;
switch (chunk.type)
{
case PSPLayerType.Raster:
case PSPLayerType.FloatingRasterSelection:
if (majorVersion >= PSPConstants.majorVersion12)
{
// Paint Shop Pro X2 and later insert an unknown block (0x21) before the start of the LayerBitmapInfo chunk.
bool ok = false;
if (reader.ReadUInt32() == PSPConstants.blockIdentifier)
{
ushort block = reader.ReadUInt16();
uint length = reader.ReadUInt32();
if (block == 0x21)
{
reader.Position += length;
if (reader.ReadUInt32() == LayerBitmapInfoChunk.HeaderSize)
{
reader.Position -= 4L;
currentOffset = reader.Position;
ok = true;
}
}
}
if (!ok)
{
throw new FormatException(Properties.Resources.UnsupportedFormatVersion);
}
}
rasterChunks.Add(new RasterLayerChunk(chunk, currentOffset));
break;
}
reader.Position += (endOffset - currentOffset);
}
else
{
reader.Position += blockLength;
}
}
return(rasterChunks);
}
public CompositeImageBlock(BufferedBinaryReader br, ushort majorVersion)
{
this.blockSize = br.ReadUInt32();
this.attrChunkCount = br.ReadUInt32();
long dif = (long)this.blockSize - HeaderSize;
if (dif > 0)
{
br.Position += dif;
}
this.attrChunks = new CompositeImageAttributesChunk[(int)this.attrChunkCount];
for (int i = 0; i < this.attrChunkCount; i++)
{
uint blockSig = br.ReadUInt32();
if (blockSig != PSPConstants.blockIdentifier)
{
throw new FormatException(Properties.Resources.InvalidBlockSignature);
}
ushort blockType = br.ReadUInt16();
PSPUtil.CheckBlockType(blockType, PSPBlockID.CompositeImageAttributes);
#pragma warning disable IDE0059 // Value assigned to symbol is never used
uint attrChunkLength = br.ReadUInt32();
#pragma warning restore IDE0059 // Value assigned to symbol is never used
this.attrChunks[i] = new CompositeImageAttributesChunk(br);
}
for (int i = 0; i < this.attrChunkCount; i++)
{
uint blockSig = br.ReadUInt32();
if (blockSig != PSPConstants.blockIdentifier)
{
throw new FormatException(Properties.Resources.InvalidBlockSignature);
}
PSPBlockID blockType = (PSPBlockID)br.ReadUInt16();
#pragma warning disable IDE0059 // Value assigned to symbol is never used
uint chunkLength = br.ReadUInt32();
#pragma warning restore IDE0059 // Value assigned to symbol is never used
switch (blockType)
{
case PSPBlockID.CompositeImage:
this.imageChunk = new CompositeImageInfoChunk(br, this.attrChunks[i], majorVersion);
break;
case PSPBlockID.JPEGImage:
this.jpegChunk = new JPEGCompositeInfoChunk(br);
break;
}
}
if (this.jpegChunk.imageData != null)
{
using (MemoryStream ms = new MemoryStream(this.jpegChunk.imageData))
{
using (System.Drawing.Bitmap th = new System.Drawing.Bitmap(ms))
{
Debug.WriteLine(string.Format("JPEG thumbnail size: {0}x{1}", th.Width, th.Height));
}
}
}
}
