public static IfdBlock parse(BinaryReader reader)
{
var result = new IfdBlock();
result.rawtag = reader.ReadUInt16();
IfdTag tag;
result.tag = (TagMap.TryGetValue(result.rawtag, out tag)) ? (IfdTag?)tag : null;
result.rawtype = reader.ReadUInt16();
result.type = IfdTypes[result.rawtype];
var length = reader.ReadUInt32();
result.length = length;
result.nextOffset = ((uint)reader.BaseStream.Position) + 4;
var datalength = length * result.type.BytesLength;
if (datalength > 4)
{
reader.BaseStream.Seek(reader.ReadUInt32(), SeekOrigin.Begin);
}
result.rawdata = reader.ReadBytes((int)datalength);
if (datalength < 4)
{
reader.ReadBytes(4 - (int)datalength);
}
return(result);
}
void ParseIfd(BinaryReader reader)
{
var blocksnumber = reader.ReadUInt16();
if (blocksnumber > 512)
{
throw new ArgumentException("Too many items in ifd");
}
while (blocksnumber-- > 0)
{
var block = IfdBlock.parse(reader);
_ifdBlocks.Add(block);
ParseIfdBlock(block, reader);
block.moveNext(reader);
}
}
protected override void ParseIfdBlock(IfdBlock block, BinaryReader reader)
{
PanasoncIfdTag tag;
if (!TagMap.TryGetValue(block.rawtag, out tag))
{
base.ParseIfdBlock(block, reader);
return;
}
switch (tag)
{
case PanasoncIfdTag.CropLeft:
CropLeft = (int) block.GetUInt32();
CropRight += CropLeft;
break;
case PanasoncIfdTag.CropTop:
CropTop = (int) block.GetUInt32();
CropBottom += CropTop;
break;
case PanasoncIfdTag.CropWidth:
CropRight += (int) block.GetUInt32();
break;
case PanasoncIfdTag.CropHeight:
CropBottom += (int) block.GetUInt32();
break;
case PanasoncIfdTag.Filters:
Filters = (int) block.GetUInt32();
break;
case PanasoncIfdTag.Iso:
Iso = (int) block.GetUInt32();
break;
case PanasoncIfdTag.Black:
Black[block.rawtag - 28] = block.GetUInt16();
Black[3] = Black[1];
break;
case PanasoncIfdTag.CamMul:
if (CamMul == null) CamMul = new float[3];
CamMul[block.rawtag - 36] = block.GetUInt16();
break;
case PanasoncIfdTag.Thumb:
Thumbnail = block.rawdata;
break;
case PanasoncIfdTag.RawOffset:
RawOffset = (int) block.GetUInt32();
break;
}
}
protected virtual void ParseIfdBlock(IfdBlock block, BinaryReader reader)
{
switch (block.tag)
{
case IfdTag.ImageWidth:
ImageWidth = block.GetUInt16();
break;
case IfdTag.ImageLength:
ImageHeight = block.GetUInt16();
break;
case IfdTag.Make:
Maker = block.GetString();
break;
case IfdTag.Model:
Model = block.GetString();
break;
case IfdTag.StripOffsets:
StripOffset = (int) block.GetUInt32();
break;
case IfdTag.Orientation:
Orientation = (int) block.GetUInt32();
break;
case IfdTag.RowsPerStrip:
StripByteCounts = (int) block.GetUInt32();
break;
case IfdTag.ExifIFD:
reader.BaseStream.Seek(block.GetUInt32(), SeekOrigin.Begin);
ParseIfd(reader);
break;
case IfdTag.ExposureTime:
Shutter = block.GetFraction();
break;
case IfdTag.FNumber:
Aperture = block.GetFraction();
break;
case IfdTag.ExposureProgram:
ExposureProgram = (int) block.GetUInt32();
break;
case IfdTag.ExifVersion:
ExifVersion = block.GetString();
break;
case IfdTag.DateTimeOriginal:
DateTimeOriginal = block.GetString();
break;
case IfdTag.DateTimeDigitized:
DateTimeDigitized = block.GetString();
break;
case IfdTag.ExposureBiasValue:
ExposureBiasValue = block.GetFraction();
break;
case IfdTag.MaxApertureValue:
MaxApertureValue = block.GetFraction();
break;
case IfdTag.MeteringMode:
MeteringMode = (int) block.GetUInt32();
break;
case IfdTag.Flash:
Flash = (int) block.GetUInt32();
break;
case IfdTag.FocalLength:
FocalLength = block.GetFraction();
break;
case IfdTag.SubsecTimeOriginal:
SubsecTimeOriginal = block.GetString();
break;
case IfdTag.SubsecTimeDigitized:
SubsecTimeDigitized = block.GetString();
break;
case IfdTag.FileSource:
FileSource = (int) block.GetUInt32();
break;
}
}
protected virtual void ParseIfdBlock(IfdBlock block, BinaryReader reader)
{
switch (block.tag)
{
case IfdTag.ImageWidth:
ImageWidth = block.GetUInt16();
block.variant = ImageWidth;
break;
case IfdTag.ImageLength:
ImageHeight = block.GetUInt16();
block.variant = ImageHeight;
break;
case IfdTag.Make:
Maker = block.GetString();
block.variant = Maker;
break;
case IfdTag.Model:
Model = block.GetString();
block.variant = Model;
break;
case IfdTag.StripOffsets:
StripOffset = (int)block.GetUInt32();
block.variant = StripOffset;
break;
case IfdTag.Orientation:
Orientation = (int)block.GetUInt32();
block.variant = Orientation;
break;
case IfdTag.RowsPerStrip:
StripByteCounts = (int)block.GetUInt32();
block.variant = StripByteCounts;
break;
case IfdTag.ExifIFD:
reader.BaseStream.Seek(block.GetUInt32(), SeekOrigin.Begin);
ParseIfd(reader);
break;
case IfdTag.ExposureTime:
Shutter = block.GetFraction();
block.variant = Shutter.ToFloat();
break;
case IfdTag.FNumber:
Aperture = block.GetFraction();
block.variant = Aperture.ToFloat();
break;
case IfdTag.ExposureProgram:
ExposureProgram = (int)block.GetUInt32();
block.variant = ExposureProgram;
break;
case IfdTag.ExifVersion:
ExifVersion = block.GetString();
block.variant = ExifVersion;
break;
case IfdTag.DateTimeOriginal:
DateTimeOriginal = block.GetString();
block.variant = DateTimeOriginal;
break;
case IfdTag.DateTimeDigitized:
DateTimeDigitized = block.GetString();
block.variant = DateTimeDigitized;
break;
case IfdTag.ExposureBiasValue:
ExposureBiasValue = block.GetFraction();
block.variant = ExposureBiasValue.ToFloat();
break;
case IfdTag.MaxApertureValue:
MaxApertureValue = block.GetFraction();
block.variant = MaxApertureValue.ToFloat();
break;
case IfdTag.MeteringMode:
MeteringMode = (int)block.GetUInt32();
block.variant = MeteringMode;
break;
case IfdTag.Flash:
Flash = (int)block.GetUInt32();
block.variant = Flash;
break;
case IfdTag.FocalLength:
FocalLength = block.GetFraction();
block.variant = FocalLength.ToFloat();
break;
case IfdTag.SubsecTimeOriginal:
SubsecTimeOriginal = block.GetString();
block.variant = SubsecTimeOriginal;
break;
case IfdTag.SubsecTimeDigitized:
SubsecTimeDigitized = block.GetString();
block.variant = SubsecTimeDigitized;
break;
case IfdTag.FileSource:
FileSource = (int)block.GetUInt32();
block.variant = FileSource;
break;
default:
if (block.length <= 4)
{
block.variant = block.GetUInt32();
}
else
{
block.variant = (block.type == IfdType.UInt32Fraction) ? block.GetFraction().ToString() : string.Join(", ", block.rawdata);
}
break;
}
}
protected virtual void ParseIfdBlock(IfdBlock block, BinaryReader reader)
{
switch (block.tag)
{
case IfdTag.ImageWidth:
ImageWidth = block.GetUInt16();
break;
case IfdTag.ImageLength:
ImageHeight = block.GetUInt16();
break;
case IfdTag.Make:
Maker = block.GetString();
break;
case IfdTag.Model:
Model = block.GetString();
break;
case IfdTag.StripOffsets:
StripOffset = (int)block.GetUInt32();
break;
case IfdTag.Orientation:
Orientation = (int)block.GetUInt32();
break;
case IfdTag.RowsPerStrip:
StripByteCounts = (int)block.GetUInt32();
break;
case IfdTag.ExifIFD:
reader.BaseStream.Seek(block.GetUInt32(), SeekOrigin.Begin);
ParseIfd(reader);
break;
case IfdTag.ExposureTime:
Shutter = block.GetFraction();
break;
case IfdTag.FNumber:
Aperture = block.GetFraction();
break;
case IfdTag.ExposureProgram:
ExposureProgram = (int)block.GetUInt32();
break;
case IfdTag.ExifVersion:
ExifVersion = block.GetString();
break;
case IfdTag.DateTimeOriginal:
DateTimeOriginal = block.GetString();
break;
case IfdTag.DateTimeDigitized:
DateTimeDigitized = block.GetString();
break;
case IfdTag.ExposureBiasValue:
ExposureBiasValue = block.GetFraction();
break;
case IfdTag.MaxApertureValue:
MaxApertureValue = block.GetFraction();
break;
case IfdTag.MeteringMode:
MeteringMode = (int)block.GetUInt32();
break;
case IfdTag.Flash:
Flash = (int)block.GetUInt32();
break;
case IfdTag.FocalLength:
FocalLength = block.GetFraction();
break;
case IfdTag.SubsecTimeOriginal:
SubsecTimeOriginal = block.GetString();
break;
case IfdTag.SubsecTimeDigitized:
SubsecTimeDigitized = block.GetString();
break;
case IfdTag.FileSource:
FileSource = (int)block.GetUInt32();
break;
}
}
public static IfdBlock parse(BinaryReader reader)
{
var result = new IfdBlock();
result.rawtag = reader.ReadUInt16();
IfdTag tag;
result.tag = (TagMap.TryGetValue(result.rawtag, out tag)) ? (IfdTag?) tag : null;
result.rawtype = reader.ReadUInt16();
result.type = IfdTypes[result.rawtype];
var length = reader.ReadUInt32();
result.length = length;
result.nextOffset = ((uint) reader.BaseStream.Position) + 4;
var datalength = length*result.type.BytesLength;
if (datalength > 4)
reader.BaseStream.Seek(reader.ReadUInt32(), SeekOrigin.Begin);
result.rawdata = reader.ReadBytes((int) datalength);
if (datalength < 4) reader.ReadBytes(4 - (int) datalength);
return result;
}