private void GetData(ImageBinaryReader fileStream)
{
data = new Object[dataCount];
for (int j = 0; j < dataCount; j++)
{
switch (dataType)
{
case TiffDataType.BYTE:
case TiffDataType.UNDEFINED:
case TiffDataType.ASCII:
data[j] = fileStream.ReadByte();
break;
case TiffDataType.SHORT:
data[j] = fileStream.ReadUInt16();
break;
case TiffDataType.LONG:
case TiffDataType.OFFSET:
data[j] = fileStream.ReadUInt32();
break;
case TiffDataType.SBYTE:
data[j] = fileStream.ReadSByte();
break;
case TiffDataType.SSHORT:
data[j] = fileStream.ReadInt16();
//if ( dataOffset == 0 && dataCount == 1) fileStream.ReadInt16();
break;
case TiffDataType.SLONG:
data[j] = fileStream.ReadInt32();
break;
case TiffDataType.SRATIONAL:
case TiffDataType.RATIONAL:
//Because the nikonmakernote is broken with the tag 0x19 wich is double but offset of zero.
if (dataOffset == 0)
{
data[j] = .0;
}
else
{
data[j] = fileStream.ReadRational();
}
break;
case TiffDataType.FLOAT:
data[j] = fileStream.ReadSingle();
break;
case TiffDataType.DOUBLE:
data[j] = fileStream.ReadDouble();
break;
}
}
}
public static void Decode16BitRawUnpacked(ImageBinaryReader input, Point2D size, Point2D offset, Image <ushort> rawImage)
{
for (int y = 0; y < size.height; y++)
{
var skip = (y + offset.height) * rawImage.fullSize.dim.width + offset.width;
for (int x = 0; x < size.width; x += 1)
{
rawImage.fullSize.rawView[skip + x] = input.ReadUInt16();
}
}
}
public void ParseSOF(SOFInfo sof)
{
uint headerLength = input.ReadUInt16();
sof.precision = input.ReadByte();
sof.height = input.ReadUInt16();
sof.width = input.ReadUInt16();
sof.numComponents = input.ReadByte();
if (sof.precision > 16)
{
throw new RawDecoderException("More than 16 bits per channel is not supported.");
}
if (sof.numComponents > 4 || sof.numComponents < 1)
{
throw new RawDecoderException("Only from 1 to 4 components are supported.");
}
if (headerLength != 8 + sof.numComponents * 3)
{
throw new RawDecoderException("Header size mismatch.");
}
for (int i = 0; i < sof.numComponents; i++)
{
sof.ComponentInfo[i].componentId = input.ReadByte();
uint subs = input.ReadByte();
frame.ComponentInfo[i].superV = subs & 0xf;
frame.ComponentInfo[i].superH = subs >> 4;
uint Tq = input.ReadByte();
if (Tq != 0)
{
throw new RawDecoderException("Quantized components not supported.");
}
}
sof.Initialized = true;
}
public Tag(ImageBinaryReader fileStream, int baseOffset)
{
parent_offset = baseOffset;
TagId = (TagType)fileStream.ReadUInt16();
dataType = (TiffDataType)fileStream.ReadUInt16();
if (TagId == TagType.FUJI_RAW_IFD)
{
if (dataType == TiffDataType.OFFSET) // FUJI - correct type
{
dataType = TiffDataType.LONG;
}
}
dataCount = fileStream.ReadUInt32();
dataOffset = 0;
if (((dataCount * dataType.GetTypeSize() > 4)))
{
dataOffset = fileStream.ReadUInt32();
}
else
{
GetData(fileStream);
int k = (int)dataCount * dataType.GetTypeSize();
if (k < 4)
{
fileStream.ReadBytes(4 - k);
}
}
/* if (dataOffset < fileStream.BaseStream.Length && dataOffset > 1)
* {
* long firstPosition = fileStream.Position;
* fileStream.Position = dataOffset + parent_offset;
* GetData(fileStream);
* fileStream.BaseStream.Position = firstPosition;
* ¨*/
}
protected void Parse(ImageBinaryReader fileStream)
{
tagNumber = fileStream.ReadUInt16();
Debug.Assert(tagNumber < UInt16.MaxValue);
for (int i = 0; i < tagNumber; i++)
{
Tag temp = new Tag(fileStream, RelativeOffset);
if (!tags.ContainsKey(temp.TagId))
{
tags.Add(temp.TagId, temp);
}
}
NextOffset = fileStream.ReadUInt32();
foreach (Tag tag in tags.Values)
{
if (tag.TagId != TagType.MAKERNOTE && tag.TagId != TagType.MAKERNOTE_ALT)
{
tag.ReadData(fileStream);
}
}
foreach (Tag tag in tags.Values)
{
try
{
//Special tag
switch (tag.TagId)
{
case TagType.DNGPRIVATEDATA:
IFD maker_ifd = ParseDngPrivateData(tag);
if (maker_ifd != null)
{
subIFD.Add(maker_ifd);
tag.data = null;
}
break;
case TagType.MAKERNOTE:
case TagType.MAKERNOTE_ALT:
case (TagType)288:
Makernote makernote = ParseMakerNote(fileStream, tag, endian);
if (makernote != null)
{
subIFD.Add(makernote);
}
break;
case TagType.OLYMPUSIMAGEPROCESSING:
case TagType.FUJI_RAW_IFD:
case TagType.NIKONTHUMB:
case TagType.SUBIFDS:
case TagType.EXIFIFDPOINTER:
for (Int32 k = 0; k < tag.dataCount; k++)
{
subIFD.Add(new IFD(IFDType.Plain, fileStream, tag.GetUInt(k), endian, Depth, RelativeOffset));
}
break;
case TagType.GPSINFOIFDPOINTER:
subIFD.Add(new IFD(IFDType.GPS, fileStream, tag.GetUInt(0), endian, Depth));
break;
}
}
catch (Exception) { }
}
}
public void Decompress(ImageBinaryReader metadata, uint offset, uint size)
{
metadata.Position = 0;
byte v0 = metadata.ReadByte();
byte v1 = metadata.ReadByte();
int huffSelect = 0;
uint split = 0;
var pUp1 = new int[2];
var pUp2 = new int[2];
huff[0].UseBigTable = true;
if (v0 == 73 || v1 == 88)
{
metadata.ReadBytes(2110);
}
if (v0 == 70)
{
huffSelect = 2;
}
if (raw.fullSize.ColorDepth == 14)
{
huffSelect += 3;
}
pUp1[0] = metadata.ReadInt16();
pUp1[1] = metadata.ReadInt16();
pUp2[0] = metadata.ReadInt16();
pUp2[1] = metadata.ReadInt16();
int max = 1 << raw.fullSize.ColorDepth & 0x7fff;
int step = 0, csize = metadata.ReadUInt16();
if (csize > 1)
{
step = max / (csize - 1);
}
if (v0 == 68 && v1 == 32 && step > 0)
{
for (int i = 0; i < csize; i++)
{
curve[i * step] = metadata.ReadUInt16();
}
for (int i = 0; i < max; i++)
{
curve[i] = (ushort)((curve[i - i % step] * (step - i % step) + curve[i - i % step + step] * (i % step)) / step);
}
metadata.Position = (562);
split = metadata.ReadUInt16();
}
else if (v0 != 70 && csize <= 0x4001)
{
for (int i = 0; i < csize; i++)
{
curve[i] = metadata.ReadUInt16();
}
max = csize;
}
huff[0].Create(huffSelect);
raw.whitePoint = curve[max - 1];
raw.black = curve[0];
raw.table = new TableLookUp(curve, max, true);
huff[0].bitPump = new BitPumpMSB(input, offset, size);
int pLeft1 = 0, pLeft2 = 0;
uint random = huff[0].bitPump.PeekBits(24);
for (int y = 0; y < raw.fullSize.dim.height; y++)
{
if (split != 0 && (y == split))
{
huff[0].Create(huffSelect + 1);
}
pUp1[y & 1] += huff[0].Decode();
pUp2[y & 1] += huff[0].Decode();
pLeft1 = pUp1[y & 1];
pLeft2 = pUp2[y & 1];
long dest = y * raw.fullSize.dim.width;
raw.SetWithLookUp((ushort)pLeft1, raw.fullSize.rawView, dest++, ref random);
raw.SetWithLookUp((ushort)pLeft2, raw.fullSize.rawView, dest++, ref random);
for (int x = 1; x < raw.fullSize.dim.width / 2; x++)
{
pLeft1 += huff[0].Decode();
pLeft2 += huff[0].Decode();
raw.SetWithLookUp((ushort)pLeft1, raw.fullSize.rawView, dest++, ref random);
raw.SetWithLookUp((ushort)pLeft2, raw.fullSize.rawView, dest++, ref random);
}
}
raw.table = null;
}
