// Set open file's clientdata, and return previous value.
public static Stream TIFFSetClientdata(TIFF tif, Stream newvalue)
{
Stream m = tif.tif_clientdata;
tif.tif_clientdata = newvalue;
return(m);
}
// Set open file's I/O descriptor, and return previous value.
public static Stream TIFFSetFileno(TIFF tif, Stream fd)
{
Stream old_fd = tif.tif_fd;
tif.tif_fd = fd;
return(old_fd);
}
// Set the file name.
public static string TIFFSetFileName(TIFF tif, string name)
{
string old_name = tif.tif_name;
tif.tif_name = name;
return(old_name);
}
// Similar to TIFFWriteDirectory(), but if the directory has already
// been written once, it is relocated to the end of the file, in case it
// has changed in size. Note that this will result in the loss of the
// previously used directory space.
public static bool TIFFRewriteDirectory(TIFF tif)
{
string module="TIFFRewriteDirectory";
// We don't need to do anything special if it hasn't been written.
if(tif.tif_diroff==0) return TIFFWriteDirectory(tif);
// Find and zero the pointer to this directory, so that TIFFLinkDirectory
// will cause it to be added after this directories current pre-link.
// Is it the first directory in the file?
if(tif.tif_header.tiff_diroff==tif.tif_diroff)
{
tif.tif_header.tiff_diroff=0;
tif.tif_diroff=0;
TIFFSeekFile(tif, (uint)(TIFF_MAGIC_SIZE+TIFF_VERSION_SIZE), SEEK.SET);
if(!WriteOK(tif, tif.tif_header.tiff_diroff))
{
TIFFErrorExt(tif.tif_clientdata, tif.tif_name, "Error updating TIFF header");
return true;
}
}
else
{
uint nextdir=tif.tif_header.tiff_diroff;
do
{
ushort dircount;
if(!SeekOK(tif, nextdir)||!ReadOK(tif, out dircount))
{
TIFFErrorExt(tif.tif_clientdata, module, "Error fetching directory count");
return false;
}
if((tif.tif_flags&TIF_FLAGS.TIFF_SWAB)!=0) TIFFSwab(ref dircount);
TIFFSeekFile(tif, (uint)dircount*12, SEEK.CUR);
if(!ReadOK(tif, out nextdir))
{
TIFFErrorExt(tif.tif_clientdata, module, "Error fetching directory link");
return false;
}
if((tif.tif_flags&TIF_FLAGS.TIFF_SWAB)!=0) TIFFSwab(ref nextdir);
} while(nextdir!=tif.tif_diroff&&nextdir!=0);
uint off=TIFFSeekFile(tif, 0, SEEK.CUR); // get current offset
TIFFSeekFile(tif, off-4, SEEK.SET);
tif.tif_diroff=0;
if(!WriteOK(tif, tif.tif_diroff))
{
TIFFErrorExt(tif.tif_clientdata, module, "Error writing directory link");
return false;
}
}
// Now use TIFFWriteDirectory() normally.
return TIFFWriteDirectory(tif);
}
// Return read/write mode.
public static O TIFFSetMode(TIFF tif, O mode)
{
O old_mode = tif.tif_mode;
tif.tif_mode = mode;
return(old_mode);
}
static bool ZIPSetupDecode(TIFF tif)
{
ZIPState sp = tif.tif_data as ZIPState;
string module = "ZIPSetupDecode";
#if DEBUG
if (sp == null)
{
throw new Exception("sp==null");
}
#endif
// if we were last encoding, terminate this mode
if ((sp.state & ZSTATE.INIT_ENCODE) == ZSTATE.INIT_ENCODE)
{
zlib.deflateEnd(sp.stream);
sp.state = ZSTATE.None;
}
if (zlib.inflateInit(sp.stream) != zlib.Z_OK)
{
TIFFErrorExt(tif.tif_clientdata, module, "{0}: {1}", tif.tif_name, sp.stream.msg);
return(false);
}
else
{
sp.state |= ZSTATE.INIT_DECODE;
return(true);
}
}
// Return the number of bytes to read/write in a call to
// one of the scanline-oriented i/o routines. Note that
// this number may be 1/samples-per-pixel if data is
// stored as separate planes.
// The ScanlineSize in case of YCbCrSubsampling is defined as the
// strip size divided by the strip height, i.e. the size of a pack of vertical
// subsampling lines divided by vertical subsampling. It should thus make
// sense when multiplied by a multiple of vertical subsampling.
// Some stuff depends on this newer version of TIFFScanlineSize
// TODO: resolve this
public static int TIFFNewScanlineSize(TIFF tif)
{
TIFFDirectory td=tif.tif_dir;
uint scanline;
if(td.td_planarconfig==PLANARCONFIG.CONTIG)
{
if(td.td_photometric==PHOTOMETRIC.YCBCR&&!isUpSampled(tif))
{
object[] ap=new object[2];
TIFFGetField(tif, TIFFTAG.YCBCRSUBSAMPLING, ap);
ushort[] ycbcrsubsampling=new ushort[2];
ycbcrsubsampling[0]=__GetAsUshort(ap, 0);
ycbcrsubsampling[1]=__GetAsUshort(ap, 1);
if(ycbcrsubsampling[0]*ycbcrsubsampling[1]==0)
{
TIFFErrorExt(tif.tif_clientdata, tif.tif_name, "Invalid YCbCr subsampling");
return 0;
}
return (int)(((((td.td_imagewidth+ycbcrsubsampling[0]-1)/ycbcrsubsampling[0])*(ycbcrsubsampling[0]*ycbcrsubsampling[1]+2)*td.td_bitspersample+7)/8)/ycbcrsubsampling[1]);
}
else scanline=multiply(tif, td.td_imagewidth, td.td_samplesperpixel, "TIFFScanlineSize");
}
else scanline=td.td_imagewidth;
return (int)TIFFhowmany8(multiply(tif, scanline, td.td_bitspersample, "TIFFScanlineSize"));
}
public static bool _TIFFMergeFieldInfo(TIFF tif, List <TIFFFieldInfo> info)
{
string module = "_TIFFMergeFieldInfo";
tif.tif_foundfield = null;
try
{
foreach (TIFFFieldInfo fi in info)
{
TIFFFieldInfo fip = TIFFFindFieldInfo(tif, fi.field_tag, fi.field_type);
if (fip == null)
{
tif.tif_fieldinfo.Add(fi);
}
}
}
catch
{
TIFFErrorExt(tif.tif_clientdata, module, "Failed to allocate field info array");
return(false);
}
// Sort the field info by tag number
tif.tif_fieldinfo.Sort(tagCompare);
return(true);
}
static TIFFFieldInfo TIFFFindFieldInfo(TIFF tif, TIFFTAG tag, TIFFDataType dt)
{
if (tif.tif_foundfield != null && tif.tif_foundfield.field_tag == tag &&
(dt == TIFFDataType.TIFF_ANY || dt == tif.tif_foundfield.field_type))
{
return(tif.tif_foundfield);
}
// If we are invoked with no field information, then just return.
if (tif.tif_fieldinfo == null || tif.tif_fieldinfo.Count == 0)
{
return(null);
}
#if !USE_TIFFFindFieldInfoSearch
foreach (TIFFFieldInfo fip in tif.tif_fieldinfo)
{
if (fip.field_tag == tag && (dt == TIFFDataType.TIFF_ANY || fip.field_type == dt))
{
return(tif.tif_foundfield = fip);
}
}
return(null);
#else
return(TIFFFindFieldInfoSearch(tif, tag, dt, 0, tif.tif_fieldinfo.Count));
#endif
}
public static void TIFFMergeFieldInfo(TIFF tif, List <TIFFFieldInfo> info)
{
if (!_TIFFMergeFieldInfo(tif, info))
{
TIFFErrorExt(tif.tif_clientdata, "TIFFMergeFieldInfo", "Merging block of %d fields failed", info.Count);
}
}
// Compute how many tiles are in an image.
public static uint TIFFNumberOfTiles(TIFF tif)
{
TIFFDirectory td = tif.tif_dir;
uint dx = td.td_tilewidth;
uint dy = td.td_tilelength;
uint dz = td.td_tiledepth;
uint ntiles;
if (dx == 0xffffffff)
{
dx = td.td_imagewidth;
}
if (dy == 0xffffffff)
{
dy = td.td_imagelength;
}
if (dz == 0xffffffff)
{
dz = td.td_imagedepth;
}
ntiles = (dx == 0 || dy == 0 || dz == 0)?0:
multiply(tif,
multiply(tif, TIFFhowmany(td.td_imagewidth, dx), TIFFhowmany(td.td_imagelength, dy), "TIFFNumberOfTiles"),
TIFFhowmany(td.td_imagedepth, dz),
"TIFFNumberOfTiles");
if (td.td_planarconfig == PLANARCONFIG.SEPARATE)
{
ntiles = multiply(tif, ntiles, td.td_samplesperpixel, "TIFFNumberOfTiles");
}
return(ntiles);
}
//*********************************************************************
//
// Public Routines
//
//*********************************************************************
// Given an open TIFF file, look for GTIF keys and values and return GTIF structure.
//
// This function creates a GeoTIFF information interpretation handle
// (GTIF) based on a passed in TIFF handle originally from
// XTIFFOpen().
//
// The returned GTIF handle can be used to read or write GeoTIFF tags
// using the various GTIF functions. The handle should be destroyed using
// GTIFFree() before the file is closed with TIFFClose().
//
// If the file accessed has no GeoTIFF keys, an valid (but empty) GTIF is
// still returned. GTIFNew() is used both for existing files being read, and
// for new TIFF files that will have GeoTIFF tags written to them.
public static GTIF GTIFNew(TIFF tif)
{
TIFFMethod default_methods=new TIFFMethod();
_GTIFSetDefaultTIFF(default_methods);
return GTIFNewWithMethods(tif, default_methods);
}
// Check an (x,y,z,s) coordinate against the image bounds.
public static bool TIFFCheckTile(TIFF tif, uint x, uint y, uint z, ushort s)
{
TIFFDirectory td=tif.tif_dir;
if(x>=td.td_imagewidth)
{
TIFFErrorExt(tif.tif_clientdata, tif.tif_name, "{0}: Col out of range, max {1}", x, td.td_imagewidth-1);
return false;
}
if(y>=td.td_imagelength)
{
TIFFErrorExt(tif.tif_clientdata, tif.tif_name, "{0}: Row out of range, max {1}", y, td.td_imagelength-1);
return false;
}
if(z>=td.td_imagedepth)
{
TIFFErrorExt(tif.tif_clientdata, tif.tif_name, "{0}: Depth out of range, max {1}", z, td.td_imagedepth-1);
return false;
}
if(td.td_planarconfig==PLANARCONFIG.SEPARATE&&s>=td.td_samplesperpixel)
{
TIFFErrorExt(tif.tif_clientdata, tif.tif_name, "{0}: Sample out of range, max {1}", s, td.td_samplesperpixel-1);
return false;
}
return true;
}
// Compute which tile an (x,y,z,s) value is in.
public static uint TIFFComputeTile(TIFF tif, uint x, uint y, uint z, ushort s)
{
TIFFDirectory td=tif.tif_dir;
uint dx=td.td_tilewidth;
uint dy=td.td_tilelength;
uint dz=td.td_tiledepth;
if(td.td_imagedepth==1) z=0;
if(dx==0xffffffff) dx=td.td_imagewidth;
if(dy==0xffffffff) dy=td.td_imagelength;
if(dz==0xffffffff) dz=td.td_imagedepth;
if(dx!=0&&dy!=0&&dz!=0)
{
uint xpt=TIFFhowmany(td.td_imagewidth, dx);
uint ypt=TIFFhowmany(td.td_imagelength, dy);
uint zpt=TIFFhowmany(td.td_imagedepth, dz);
if(td.td_planarconfig==PLANARCONFIG.SEPARATE)
return xpt*ypt*zpt*s+xpt*ypt*(z/dz)+xpt*(y/dy)+x/dx;
return xpt*ypt*(z/dz)+xpt*(y/dy)+x/dx;
}
return 1;
}
static bool _notConfigured(TIFF tif)
{
TIFFCodec c = TIFFFindCODEC(tif.tif_dir.td_compression);
TIFFErrorExt(tif.tif_clientdata, tif.tif_name, "{0} compression support is not configured", (c != null?c.name:tif.tif_dir.td_compression.ToString()));
return(false);
}
static bool TIFFInitNeXT(TIFF tif, COMPRESSION scheme)
{
tif.tif_decoderow = NeXTDecode;
tif.tif_decodestrip = NeXTDecode;
tif.tif_decodetile = NeXTDecode;
return(true);
}
static int TIFFReadRawTile1(TIFF tif, uint tile, byte[] buf, int size, string module)
{
TIFFDirectory td = tif.tif_dir;
#if DEBUG
if ((tif.tif_flags & TIF_FLAGS.TIFF_NOREADRAW) != 0)
{
throw new Exception("(tif.tif_flags&TIF_FLAGS.TIFF.NOREADRAW)==0");
}
#endif
if (!SeekOK(tif, td.td_stripoffset[tile]))
{
TIFFErrorExt(tif.tif_clientdata, module, "{0}: Seek error at row {1}, col {2}, tile {3}", tif.tif_name, tif.tif_row, tif.tif_col, tile);
return(-1);
}
int cc = TIFFReadFile(tif, buf, size);
if (cc != size)
{
TIFFErrorExt(tif.tif_clientdata, module, "{0}: Read error at row {1}, col {2}; got {3} bytes, expected {4}", tif.tif_name, tif.tif_row, tif.tif_col, cc, size);
return(-1);
}
return(size);
}
static void ZIPCleanup(TIFF tif)
{
ZIPState sp = tif.tif_data as ZIPState;
#if DEBUG
if (sp == null)
{
throw new Exception("sp==null");
}
#endif
TIFFPredictorCleanup(tif);
tif.tif_tagmethods.vgetfield = sp.vgetparent;
tif.tif_tagmethods.vsetfield = sp.vsetparent;
if ((sp.state & ZSTATE.INIT_ENCODE) == ZSTATE.INIT_ENCODE)
{
zlib.deflateEnd(sp.stream);
sp.state = ZSTATE.None;
}
else if ((sp.state & ZSTATE.INIT_DECODE) == ZSTATE.INIT_DECODE)
{
zlib.inflateEnd(sp.stream);
sp.state = ZSTATE.None;
}
tif.tif_data = null;
TIFFSetDefaultCompressionState(tif);
}
// Finish off an encoded strip by flushing the last
// string and tacking on an End Of Information code.
static bool ZIPPostEncode(TIFF tif)
{
ZIPState sp = tif.tif_data as ZIPState;
string module = "ZIPPostEncode";
int state;
sp.stream.avail_in = 0;
do
{
state = zlib.deflate(sp.stream, zlib.Z_FINISH);
switch (state)
{
case zlib.Z_STREAM_END:
case zlib.Z_OK:
if ((int)sp.stream.avail_out != (int)tif.tif_rawdatasize)
{
tif.tif_rawcc = tif.tif_rawdatasize - sp.stream.avail_out;
TIFFFlushData1(tif);
sp.stream.out_buf = tif.tif_rawdata;
sp.stream.next_out = 0;
sp.stream.avail_out = tif.tif_rawdatasize;
}
break;
default:
TIFFErrorExt(tif.tif_clientdata, module, "{0}: zlib error: {1}", tif.tif_name, sp.stream.msg);
return(false);
}
} while(state != zlib.Z_STREAM_END);
return(true);
}
// Check an (x,y,z,s) coordinate against the image bounds.
public static bool TIFFCheckTile(TIFF tif, uint x, uint y, uint z, ushort s)
{
TIFFDirectory td = tif.tif_dir;
if (x >= td.td_imagewidth)
{
TIFFErrorExt(tif.tif_clientdata, tif.tif_name, "{0}: Col out of range, max {1}", x, td.td_imagewidth - 1);
return(false);
}
if (y >= td.td_imagelength)
{
TIFFErrorExt(tif.tif_clientdata, tif.tif_name, "{0}: Row out of range, max {1}", y, td.td_imagelength - 1);
return(false);
}
if (z >= td.td_imagedepth)
{
TIFFErrorExt(tif.tif_clientdata, tif.tif_name, "{0}: Depth out of range, max {1}", z, td.td_imagedepth - 1);
return(false);
}
if (td.td_planarconfig == PLANARCONFIG.SEPARATE && s >= td.td_samplesperpixel)
{
TIFFErrorExt(tif.tif_clientdata, tif.tif_name, "{0}: Sample out of range, max {1}", s, td.td_samplesperpixel - 1);
return(false);
}
return(true);
}
// Decode a tile/strip and apply the predictor routine.
// Note that horizontal differencing must be done on a
// row-by-row basis. The width of a "row" has already
// been calculated at pre-decode time according to the
// strip/tile dimensions.
static bool PredictorDecodeTile(TIFF tif, byte[] op0, int occ0, ushort s)
{
TIFFPredictorState sp = (TIFFPredictorState)tif.tif_data;
if (sp.decodetile(tif, op0, occ0, s))
{
int rowsize = sp.rowsize;
#if DEBUG
if (rowsize <= 0)
{
throw new Exception("rowsize<=0");
}
#endif
int op0_offset = 0;
while (occ0 > 0)
{
sp.decodepfunc(tif, op0, op0_offset, rowsize);
occ0 -= rowsize;
op0_offset += rowsize;
}
return(true);
}
return(false);
}
// Return the number of bytes to read/write in a call to
// one of the scanline-oriented i/o routines. Note that
// this number may be 1/samples-per-pixel if data is
// stored as separate planes.
public static int TIFFScanlineSize(TIFF tif)
{
TIFFDirectory td = tif.tif_dir;
uint scanline;
if (td.td_planarconfig == PLANARCONFIG.CONTIG)
{
if (td.td_photometric == PHOTOMETRIC.YCBCR && !isUpSampled(tif))
{
object[] ap = new object[2];
TIFFGetField(tif, TIFFTAG.YCBCRSUBSAMPLING, ap);
ushort ycbcrsubsampling0 = __GetAsUshort(ap, 0);
//ushort ycbcrsubsampling1=__GetAsUshort(ap, 1); // not needed
if (ycbcrsubsampling0 == 0)
{
TIFFErrorExt(tif.tif_clientdata, tif.tif_name, "Invalid YCbCr subsampling");
return(0);
}
scanline = TIFFroundup(td.td_imagewidth, ycbcrsubsampling0);
scanline = TIFFhowmany8(multiply(tif, scanline, td.td_bitspersample, "TIFFScanlineSize"));
return((int)summarize(tif, scanline, multiply(tif, 2, scanline / ycbcrsubsampling0, "TIFFVStripSize"), "TIFFVStripSize"));
}
scanline = multiply(tif, td.td_imagewidth, td.td_samplesperpixel, "TIFFScanlineSize");
}
else
{
scanline = td.td_imagewidth;
}
return((int)TIFFhowmany8(multiply(tif, scanline, td.td_bitspersample, "TIFFScanlineSize")));
}
// Read a tile of data and decompress the specified
// amount into the user-supplied buffer.
public static int TIFFReadEncodedTile(TIFF tif, uint tile, byte[] buf, int size)
{
TIFFDirectory td = tif.tif_dir;
int tilesize = tif.tif_tilesize;
if (!TIFFCheckRead(tif, true))
{
return(-1);
}
if (tile >= td.td_nstrips)
{
TIFFErrorExt(tif.tif_clientdata, tif.tif_name, "{0}: Tile out of range, max {1}", tile, td.td_nstrips);
return(-1);
}
if (size == -1)
{
size = tilesize;
}
else if (size > tilesize)
{
size = tilesize;
}
if (TIFFFillTile(tif, tile) && tif.tif_decodetile(tif, buf, size, (ushort)(tile / td.td_stripsperimage)))
{
tif.tif_postdecode(tif, buf, 0, size);
return(size);
}
return(-1);
}
public static int TIFFReadScanline(TIFF tif, byte[] buf, uint row, ushort sample)
{
if (!TIFFCheckRead(tif, false))
{
return(-1);
}
bool e = TIFFSeek(tif, buf, row, sample);
if (e)
{
// Decompress desired row into user buffer.
e = tif.tif_decoderow(tif, buf, (int)tif.tif_scanlinesize, sample);
// we are now poised at the beginning of the next row
tif.tif_row = row + 1;
if (e)
{
tif.tif_postdecode(tif, buf, 0, (int)tif.tif_scanlinesize);
}
}
return(e?1:-1);
}
// Set state to appear as if a
// tile has just been read in.
static bool TIFFStartTile(TIFF tif, uint tile)
{
TIFFDirectory td = tif.tif_dir;
if ((tif.tif_flags & TIF_FLAGS.TIFF_CODERSETUP) == 0)
{
if (!tif.tif_setupdecode(tif))
{
return(false);
}
tif.tif_flags |= TIF_FLAGS.TIFF_CODERSETUP;
}
tif.tif_curtile = tile;
tif.tif_row = (tile % TIFFhowmany(td.td_imagewidth, td.td_tilewidth)) * td.td_tilelength;
tif.tif_col = (tile % TIFFhowmany(td.td_imagelength, td.td_tilelength)) * td.td_tilewidth;
if ((tif.tif_flags & TIF_FLAGS.TIFF_NOREADRAW) == TIF_FLAGS.TIFF_NOREADRAW)
{
tif.tif_rawdata = null; // ?????
tif.tif_rawcp = 0;
tif.tif_rawcc = 0;
}
else
{
tif.tif_rawcp = 0; //was tif.tif_rawdata;
tif.tif_rawcc = td.td_stripbytecount[tile];
}
return(tif.tif_predecode(tif, (ushort)(tile / td.td_stripsperimage)));
}
// Set state to appear as if a
// strip has just been read in.
static bool TIFFStartStrip(TIFF tif, uint strip)
{
TIFFDirectory td = tif.tif_dir;
if ((tif.tif_flags & TIF_FLAGS.TIFF_CODERSETUP) == 0)
{
if (!tif.tif_setupdecode(tif))
{
return(false);
}
tif.tif_flags |= TIF_FLAGS.TIFF_CODERSETUP;
}
tif.tif_curstrip = strip;
tif.tif_row = (strip % td.td_stripsperimage) * td.td_rowsperstrip;
if ((tif.tif_flags & TIF_FLAGS.TIFF_NOREADRAW) == TIF_FLAGS.TIFF_NOREADRAW)
{
tif.tif_rawdata = null; // ?????
tif.tif_rawcp = 0;
tif.tif_rawcc = 0;
}
else
{
tif.tif_rawcp = 0; //was tif.tif_rawdata;
tif.tif_rawcc = td.td_stripbytecount[strip];
}
return(tif.tif_predecode(tif, (ushort)(strip / td.td_stripsperimage)));
}
public static TIFFTAG TIFFGetTagListEntry(TIFF tif, int tag_index)
{
TIFFDirectory td=tif.tif_dir;
if(tag_index<0||tag_index>=td.td_customValueCount) return (TIFFTAG)(-1);
else return td.td_customValues[tag_index].info.field_tag;
}
static bool TIFFPredictorInit(TIFF tif)
{
TIFFPredictorState sp = (TIFFPredictorState)tif.tif_data;
// Merge codec-specific tag information.
if (!_TIFFMergeFieldInfo(tif, predictFieldInfo))
{
TIFFErrorExt(tif.tif_clientdata, "TIFFPredictorInit", "Merging Predictor codec-specific tags failed");
return(false);
}
// Override parent get/set field methods.
sp.vgetparent = tif.tif_tagmethods.vgetfield;
tif.tif_tagmethods.vgetfield = PredictorVGetField; // hook for predictor tag
sp.vsetparent = tif.tif_tagmethods.vsetfield;
tif.tif_tagmethods.vsetfield = PredictorVSetField; // hook for predictor tag
sp.printdir = tif.tif_tagmethods.printdir;
tif.tif_tagmethods.printdir = PredictorPrintDir; // hook for predictor tag
sp.setupdecode = tif.tif_setupdecode;
tif.tif_setupdecode = PredictorSetupDecode;
sp.setupencode = tif.tif_setupencode;
tif.tif_setupencode = PredictorSetupEncode;
sp.predictor = PREDICTOR.NONE; // default value
sp.encodepfunc = null; // no predictor routine
sp.decodepfunc = null; // no predictor routine
return(true);
}
public static void TIFFMergeFieldInfo(TIFF tif, TIFFFieldInfo info)
{
if (!_TIFFMergeFieldInfo(tif, info))
{
TIFFErrorExt(tif.tif_clientdata, "TIFFMergeFieldInfo", "Merging block of 1 fields failed");
}
}
static bool PackBitsPreEncode(TIFF tif, ushort sampleNumber)
{
PackBitsState state = null;
try
{
tif.tif_data = state = new PackBitsState();
}
catch
{
return(false);
}
// Calculate the scanline/tile-width size in bytes.
if (isTiled(tif))
{
state.data = TIFFTileRowSize(tif);
}
else
{
state.data = TIFFScanlineSize(tif);
}
return(true);
}
// Seek forwards nrows in the current strip.
static bool DumpModeSeek(TIFF tif, uint nrows)
{
tif.tif_rawcp += nrows * tif.tif_scanlinesize;
tif.tif_rawcc -= nrows * tif.tif_scanlinesize;
return(true);
}
// Read a tile of data from the file.
public static int TIFFReadRawTile(TIFF tif, uint tile, byte[] buf, int size)
{
string module = "TIFFReadRawTile";
TIFFDirectory td = tif.tif_dir;
if (!TIFFCheckRead(tif, true))
{
return(-1);
}
if (tile >= td.td_nstrips)
{
TIFFErrorExt(tif.tif_clientdata, tif.tif_name, "{0}: Tile out of range, max {1}", tile, td.td_nstrips);
return(-1);
}
if ((tif.tif_flags & TIF_FLAGS.TIFF_NOREADRAW) == TIF_FLAGS.TIFF_NOREADRAW)
{
TIFFErrorExt(tif.tif_clientdata, tif.tif_name, "Compression scheme does not support access to raw uncompressed data");
return(-1);
}
// FIXME: butecount should have tsize_t type, but for now libtiff
// defines tsize_t as a signed 32-bit integer and we are losing
// ability to read arrays larger than 2^31 bytes. So we are using
// uint32 instead of tsize_t here.
uint bytecount = td.td_stripbytecount[tile];
if (size != -1 && (uint)size < bytecount)
{
bytecount = (uint)size;
}
return(TIFFReadRawTile1(tif, tile, buf, (int)bytecount, module));
}
// Allocate downsampled-data buffers needed for downsampled I/O.
// We use values computed in jpeg_start_compress or jpeg_start_decompress.
// We use libjpeg's allocator so that buffers will be released automatically
// when done with strip/tile.
// This is also a handy place to compute samplesperclump, bytesperline.
static bool alloc_downsampled_buffers(TIFF tif, jpeg_component_info[] comp_info, int num_components)
{
JPEGState sp=tif.tif_data as JPEGState;
byte[][] buf;
int samples_per_clump=0;
for(int ci=0; ci<num_components; ci++)
{
jpeg_component_info compptr=comp_info[ci];
samples_per_clump+=compptr.h_samp_factor*compptr.v_samp_factor;
try
{
buf=TIFFjpeg_alloc_sarray(sp, compptr.width_in_blocks*libjpeg.DCTSIZE, (uint)compptr.v_samp_factor*libjpeg.DCTSIZE);
}
catch
{
return false;
}
sp.ds_buffer[ci]=buf;
}
sp.samplesperclump=samples_per_clump;
return true;
}
public static bool TIFFSetupStrips(TIFF tif)
{
TIFFDirectory td=tif.tif_dir;
if(isTiled(tif)) td.td_stripsperimage=isUnspecified(tif, FIELD.TILEDIMENSIONS)?td.td_samplesperpixel:TIFFNumberOfTiles(tif);
else td.td_stripsperimage=isUnspecified(tif, FIELD.ROWSPERSTRIP)?td.td_samplesperpixel:(uint)TIFFNumberOfStrips(tif);
td.td_nstrips=td.td_stripsperimage;
if(td.td_planarconfig==PLANARCONFIG.SEPARATE) td.td_stripsperimage/=td.td_samplesperpixel;
try
{
td.td_stripoffset=new uint[td.td_nstrips];
td.td_stripbytecount=new uint[td.td_nstrips];
}
catch
{
return false;
}
// Place data at the end-of-file
// (by setting offsets to zero).
TIFFSetFieldBit(tif, FIELD.STRIPOFFSETS);
TIFFSetFieldBit(tif, FIELD.STRIPBYTECOUNTS);
// FIX: Some tools don't like images without ROWSPERSTRIP set.
if(!TIFFFieldSet(tif, FIELD.ROWSPERSTRIP))
{
td.td_rowsperstrip=td.td_imagelength;
TIFFSetFieldBit(tif, FIELD.ROWSPERSTRIP);
}
return true;
}
static bool PackBitsDecode(TIFF tif, byte[] op, int occ, ushort s)
{
uint bp = tif.tif_rawcp;
int cc = (int)tif.tif_rawcc;
uint op_ind = 0;
while (cc > 0 && (long)occ > 0)
{
int n = tif.tif_rawdata[bp++];
cc--;
// Watch out for compilers that
// don't sign extend chars...
if (n >= 128)
{
n -= 256;
}
if (n < 0)
{ // replicate next byte -n+1 times
if (n == -128)
{
continue; // nop
}
n = -n + 1;
if (occ < n)
{
TIFFWarningExt(tif.tif_clientdata, tif.tif_name, "PackBitsDecode: discarding {0} bytes to avoid buffer overrun", n - occ);
n = occ;
}
occ -= n;
byte b = tif.tif_rawdata[bp++];
cc--;
while ((n--) > 0)
{
op[op_ind++] = b;
}
}
else
{ // copy next n+1 bytes literally
if (occ < n + 1)
{
TIFFWarningExt(tif.tif_clientdata, tif.tif_name, "PackBitsDecode: discarding {0} bytes to avoid buffer overrun", n - occ + 1);
n = occ - 1;
}
n++;
Array.Copy(tif.tif_rawdata, bp, op, op_ind, n);
op_ind += (uint)n; occ -= n;
bp += (uint)n; cc -= n;
}
}
tif.tif_rawcp = bp;
tif.tif_rawcc = (uint)cc;
if (occ > 0)
{
TIFFErrorExt(tif.tif_clientdata, tif.tif_name, "PackBitsDecode: Not enough data for scanline {0}", tif.tif_row);
return(false);
}
return(true);
}
static bool TIFFInitZIP(TIFF tif, COMPRESSION scheme)
{
string module = "TIFFInitZIP";
#if DEBUG
if (scheme != COMPRESSION.DEFLATE && scheme != COMPRESSION.ADOBE_DEFLATE)
{
throw new Exception("scheme!=COMPRESSION.DEFLATE&&scheme!=COMPRESSION.ADOBE_DEFLATE");
}
#endif
// Merge codec-specific tag information.
if (!_TIFFMergeFieldInfo(tif, zipFieldInfo))
{
TIFFErrorExt(tif.tif_clientdata, module, "Merging Deflate codec-specific tags failed");
return(false);
}
// Allocate state block so tag methods have storage to record values.
ZIPState sp = null;
try
{
tif.tif_data = sp = new ZIPState();
sp.stream = new zlib.z_stream();
}
catch
{
TIFFErrorExt(tif.tif_clientdata, module, "No space for ZIP state block");
return(false);
}
// Override parent get/set field methods.
sp.vgetparent = tif.tif_tagmethods.vgetfield;
tif.tif_tagmethods.vgetfield = ZIPVGetField; // hook for codec tags
sp.vsetparent = tif.tif_tagmethods.vsetfield;
tif.tif_tagmethods.vsetfield = ZIPVSetField; // hook for codec tags
// Default values for codec-specific fields
sp.zipquality = zlib.Z_DEFAULT_COMPRESSION; // default comp. level
sp.state = ZSTATE.None;
// Install codec methods.
tif.tif_setupdecode = ZIPSetupDecode;
tif.tif_predecode = ZIPPreDecode;
tif.tif_decoderow = ZIPDecode;
tif.tif_decodestrip = ZIPDecode;
tif.tif_decodetile = ZIPDecode;
tif.tif_setupencode = ZIPSetupEncode;
tif.tif_preencode = ZIPPreEncode;
tif.tif_postencode = ZIPPostEncode;
tif.tif_encoderow = ZIPEncode;
tif.tif_encodestrip = ZIPEncode;
tif.tif_encodetile = ZIPEncode;
tif.tif_cleanup = ZIPCleanup;
// Setup predictor setup.
TIFFPredictorInit(tif);
return(true);
}
// Tile-oriented Read Support
// Contributed by Nancy Cam (Silicon Graphics).
// Read and decompress a tile of data. The
// tile is selected by the (x,y,z,s) coordinates.
public static int TIFFReadTile(TIFF tif, byte[] buf, uint x, uint y, uint z, ushort s)
{
if (!TIFFCheckRead(tif, true) || !TIFFCheckTile(tif, x, y, z, s))
{
return(-1);
}
return(TIFFReadEncodedTile(tif, TIFFComputeTile(tif, x, y, z, s), buf, -1));
}
public static object TIFFGetClientInfo(TIFF tif, string name)
{
foreach(TIFFClientInfoLink link in tif.tif_clientinfo)
{
if(link.name==name) return link.data;
}
return null;
}
static bool NotConfigured(TIFF tif, COMPRESSION scheme)
{
tif.tif_decodestatus = false;
tif.tif_setupdecode = _notConfigured;
tif.tif_encodestatus = false;
tif.tif_setupencode = _notConfigured;
return(false);
}
// Similar to TIFFWriteDirectory(), writes the directory out
// but leaves all data structures in memory so that it can be
// written again. This will make a partially written TIFF file
// readable before it is successfully completed/closed.
public static bool TIFFCheckpointDirectory(TIFF tif)
{
// Setup the strips arrays, if they haven't already been.
if(tif.tif_dir.td_stripoffset==null) TIFFSetupStrips(tif);
bool rc=TIFFWriteDirectory(tif, false);
TIFFSetWriteOffset(tif, TIFFSeekFile(tif, 0, SEEK.END));
return rc;
}
static bool TIFFInitZIP(TIFF tif, COMPRESSION scheme)
{
string module="TIFFInitZIP";
#if DEBUG
if(scheme!=COMPRESSION.DEFLATE&&scheme!=COMPRESSION.ADOBE_DEFLATE) throw new Exception("scheme!=COMPRESSION.DEFLATE&&scheme!=COMPRESSION.ADOBE_DEFLATE");
#endif
// Merge codec-specific tag information.
if(!_TIFFMergeFieldInfo(tif, zipFieldInfo))
{
TIFFErrorExt(tif.tif_clientdata, module, "Merging Deflate codec-specific tags failed");
return false;
}
// Allocate state block so tag methods have storage to record values.
ZIPState sp=null;
try
{
tif.tif_data=sp=new ZIPState();
sp.stream=new zlib.z_stream();
}
catch
{
TIFFErrorExt(tif.tif_clientdata, module, "No space for ZIP state block");
return false;
}
// Override parent get/set field methods.
sp.vgetparent=tif.tif_tagmethods.vgetfield;
tif.tif_tagmethods.vgetfield=ZIPVGetField; // hook for codec tags
sp.vsetparent=tif.tif_tagmethods.vsetfield;
tif.tif_tagmethods.vsetfield=ZIPVSetField; // hook for codec tags
// Default values for codec-specific fields
sp.zipquality=zlib.Z_DEFAULT_COMPRESSION; // default comp. level
sp.state=ZSTATE.None;
// Install codec methods.
tif.tif_setupdecode=ZIPSetupDecode;
tif.tif_predecode=ZIPPreDecode;
tif.tif_decoderow=ZIPDecode;
tif.tif_decodestrip=ZIPDecode;
tif.tif_decodetile=ZIPDecode;
tif.tif_setupencode=ZIPSetupEncode;
tif.tif_preencode=ZIPPreEncode;
tif.tif_postencode=ZIPPostEncode;
tif.tif_encoderow=ZIPEncode;
tif.tif_encodestrip=ZIPEncode;
tif.tif_encodetile=ZIPEncode;
tif.tif_cleanup=ZIPCleanup;
// Setup predictor setup.
TIFFPredictorInit(tif);
return true;
}
// Compute which strip a (row, sample) value is in.
public static int TIFFComputeStrip(TIFF tif, uint row, ushort sample)
{
TIFFDirectory td=tif.tif_dir;
uint strip;
strip=row/td.td_rowsperstrip;
if(td.td_planarconfig==PLANARCONFIG.SEPARATE)
{
if(sample>=td.td_samplesperpixel)
{
TIFFErrorExt(tif.tif_clientdata, tif.tif_name, "{0}: Sample out of range, max {1}", sample, td.td_samplesperpixel);
return 0;
}
strip+=sample*td.td_stripsperimage;
}
return (int)strip;
}
// Floating point predictor accumulation routine.
static unsafe void fpAcc(TIFF tif, byte[] cp0, int cp0_offset, int cc)
{
int stride=((TIFFPredictorState)tif.tif_data).stride;
int bps=tif.tif_dir.td_bitspersample/8;
int wc=cc/bps;
int count=cc;
byte[] tmp=null;
try
{
tmp=new byte[cc];
}
catch
{
return;
}
fixed(byte* cp0_=cp0)
{
byte* cp=cp0_+cp0_offset;
while(count>stride)
{
//was REPEAT4(stride, cp[stride]+=*(cp++));
switch(stride)
{
default: for(int i=stride-4; i>0; i--) cp[stride]+=*(cp++); goto case 4;
case 4: cp[stride]+=*(cp++); goto case 3;
case 3: cp[stride]+=*(cp++); goto case 2;
case 2: cp[stride]+=*(cp++); goto case 1;
case 1: cp[stride]+=*(cp++); break;
case 0: break;
}
count-=stride;
}
Array.Copy(cp0, cp0_offset, tmp, 0, cc);
cp=cp0_+cp0_offset;
for(count=0; count<wc; count++)
{
for(uint b=0; b<bps; b++) cp[bps*count+b]=tmp[(bps-b-1)*wc+count];
}
}
}
public static void TIFFSetClientInfo(TIFF tif, object data, string name)
{
// Do we have an existing link with this name? If so, just
// set it.
foreach(TIFFClientInfoLink link in tif.tif_clientinfo)
{
if(link.name==name)
{
link.data=data;
return;
}
}
// Create a new link.
TIFFClientInfoLink newlink=new TIFFClientInfoLink();
newlink.name=name;
newlink.data=data;
tif.tif_clientinfo.Add(newlink);
}
const uint NOTILE = 0xffffffff; // undefined state
#endregion Fields
#region Methods
// Read the specified strip and setup for decoding.
// The data buffer is expanded, as necessary, to
// hold the strip's data.
public static bool TIFFFillStrip(TIFF tif, uint strip)
{
string module="TIFFFillStrip";
TIFFDirectory td=tif.tif_dir;
if((tif.tif_flags&TIF_FLAGS.TIFF_NOREADRAW)==0)
{
// FIXME: butecount should have tsize_t type, but for now
// libtiff defines tsize_t as a signed 32-bit integer and we
// are losing ability to read arrays larger than 2^31 bytes.
// So we are using uint32 instead of tsize_t here.
uint bytecount=td.td_stripbytecount[strip];
if(bytecount<=0)
{
TIFFErrorExt(tif.tif_clientdata, tif.tif_name, "{0}: Invalid strip byte count, strip {1}", bytecount, strip);
return false;
}
// Expand raw data buffer, if needed, to
// hold data strip coming from file
// (perhaps should set upper bound on
// the size of a buffer we'll use?).
if(bytecount>tif.tif_rawdatasize)
{
tif.tif_curstrip=NOSTRIP;
if((tif.tif_flags&TIF_FLAGS.TIFF_MYBUFFER)==0)
{
TIFFErrorExt(tif.tif_clientdata, module, "{0}: Data buffer too small to hold strip {1}", tif.tif_name, strip);
return false;
}
if(!TIFFReadBufferSetup(tif, null, (int)TIFFroundup(bytecount, 1024))) return false;
}
if((uint)TIFFReadRawStrip1(tif, strip, tif.tif_rawdata, (int)bytecount, module)!=bytecount) return false;
if(!isFillOrder(tif, td.td_fillorder)&&(tif.tif_flags&TIF_FLAGS.TIFF_NOBITREV)==0)
TIFFReverseBits(tif.tif_rawdata, (uint)bytecount);
}
return TIFFStartStrip(tif, strip);
}
// Read the specified image into an ABGR-format rastertaking in account
// specified orientation.
public static bool TIFFReadRGBAImageOriented(TIFF tif, uint rwidth, uint rheight, uint[] raster, ORIENTATION orientation, bool stop)
{
string emsg="";
TIFFRGBAImage img=new TIFFRGBAImage();
bool ok;
if(TIFFRGBAImageOK(tif, out emsg)&&TIFFRGBAImageBegin(img, tif, stop, out emsg))
{
img.req_orientation=orientation;
// XXX verify rwidth and rheight against width and height
ok=TIFFRGBAImageGet(img, raster, (rheight-img.height)*rwidth, rwidth, img.height);
TIFFRGBAImageEnd(img);
}
else
{
TIFFErrorExt(tif.tif_clientdata, TIFFFileName(tif), emsg);
ok=false;
}
return ok;
}
static TIFFFieldInfo TIFFCreateAnonFieldInfo(TIFF tif, TIFFTAG tag, TIFFDataType field_type)
{
try
{
// ??? TIFFFieldInfo fld=new TIFFFieldInfo(tag, TIFF_VARIABLE2, TIFF_VARIABLE2, field_type, FIELD.CUSTOM, true, true, "Tag "+tag);
TIFFFieldInfo fld=new TIFFFieldInfo(tag, TIFF_VARIABLE, TIFF_VARIABLE, field_type, FIELD.CUSTOM, true, true, "Tag "+tag);
return fld;
}
catch
{
return null;
}
}
static TIFFFieldInfo TIFFFieldWithName(TIFF tif, string field_name)
{
TIFFFieldInfo fip=TIFFFindFieldInfoByName(tif, field_name, TIFFDataType.TIFF_ANY);
if(fip==null)
{
TIFFErrorExt(tif.tif_clientdata, "TIFFFieldWithName", "Internal error, unknown tag {0}", field_name);
#if DEBUG
throw new Exception("fip==null");
#endif
// NOTREACHED
}
return fip;
}
static TIFFFieldInfo TIFFFindOrRegisterFieldInfo(TIFF tif, TIFFTAG tag, TIFFDataType dt)
{
TIFFFieldInfo fld=TIFFFindFieldInfo(tif, tag, dt);
if(fld==null)
{
fld=TIFFCreateAnonFieldInfo(tif, tag, dt);
if(!_TIFFMergeFieldInfo(tif, fld)) return null;
}
return fld;
}
static TIFFFieldInfo TIFFFindFieldInfoByName(TIFF tif, string field_name, TIFFDataType dt)
{
if(tif.tif_foundfield!=null&&tif.tif_foundfield.field_name==field_name&&
(dt==TIFFDataType.TIFF_ANY||dt==tif.tif_foundfield.field_type)) return tif.tif_foundfield;
// If we are invoked with no field information, then just return.
if(tif.tif_fieldinfo==null||tif.tif_fieldinfo.Count==0) return null;
foreach(TIFFFieldInfo fip in tif.tif_fieldinfo)
{
if(fip.field_name==field_name&&(dt==TIFFDataType.TIFF_ANY||fip.field_type==dt)) return tif.tif_foundfield=fip;
}
return null;
}
static TIFFFieldInfo TIFFFieldWithTag(TIFF tif, TIFFTAG tag)
{
TIFFFieldInfo fip=TIFFFindFieldInfo(tif, tag, TIFFDataType.TIFF_ANY);
if(fip==null)
{
TIFFErrorExt(tif.tif_clientdata, "TIFFFieldWithTag", "Internal error, unknown tag 0x{0:X}", tag);
#if DEBUG
throw new Exception("fip==null");
#endif
// NOTREACHED
}
return fip;
}
static TIFFFieldInfo TIFFFindFieldInfo(TIFF tif, TIFFTAG tag, TIFFDataType dt)
{
if(tif.tif_foundfield!=null&&tif.tif_foundfield.field_tag==tag&&
(dt==TIFFDataType.TIFF_ANY||dt==tif.tif_foundfield.field_type)) return tif.tif_foundfield;
// If we are invoked with no field information, then just return.
if(tif.tif_fieldinfo==null||tif.tif_fieldinfo.Count==0) return null;
#if !USE_TIFFFindFieldInfoSearch
foreach(TIFFFieldInfo fip in tif.tif_fieldinfo)
{
if(fip.field_tag==tag&&(dt==TIFFDataType.TIFF_ANY||fip.field_type==dt)) return tif.tif_foundfield=fip;
}
return null;
#else
return TIFFFindFieldInfoSearch(tif, tag, dt, 0, tif.tif_fieldinfo.Count);
#endif
}
static TIFFFieldInfo TIFFFindFieldInfoSearch(TIFF tif, TIFFTAG tag, TIFFDataType dt, int min, int num)
{
if(num==0) return null;
TIFFFieldInfo fip=tif.tif_fieldinfo[min+num/2];
if(fip.field_tag==tag)
{
int pos=min+num/2;
if(dt==TIFFDataType.TIFF_ANY)
{
for(; ; ) // Find first
{
if(pos==0) break;
if(tif.tif_fieldinfo[pos-1].field_tag!=tag) break;
pos--;
fip=tif.tif_fieldinfo[pos];
}
return tif.tif_foundfield=fip;
}
if(fip.field_type==dt) return tif.tif_foundfield=fip;
//if(fip.field_type>dt) return TIFFFindFieldInfoSearch(tif, tag, dt, min, num/2);
//return TIFFFindFieldInfoSearch(tif, tag, dt, min+num/2+1, num-(num/2+1));
for(; ; ) // preceding fieldinfos and exit if found DataType
{
if(pos==0) break;
if(tif.tif_fieldinfo[pos-1].field_tag!=tag) break;
pos--;
fip=tif.tif_fieldinfo[pos];
if(fip.field_type==dt) return tif.tif_foundfield=fip;
}
pos=min+num/2;
for(; ; ) // succeding fieldinfos first and exit if found DataType
{
if(pos==(tif.tif_fieldinfo.Count-1)) break;
if(tif.tif_fieldinfo[pos+1].field_tag!=tag) break;
pos++;
fip=tif.tif_fieldinfo[pos];
if(fip.field_type==dt) return tif.tif_foundfield=fip;
}
return null;
}
if(fip.field_tag>tag) return TIFFFindFieldInfoSearch(tif, tag, dt, min, num/2);
return TIFFFindFieldInfoSearch(tif, tag, dt, min+num/2+1, num-(num/2+1));
}
public static void TIFFPrintFieldInfo(TIFF tif, StreamWriter fd)
{
fd.WriteLine("{0}: ", tif.tif_name);
int i=0;
foreach(TIFFFieldInfo fip in tif.tif_fieldinfo)
fd.WriteLine("field[{0, 2}] {1, 5}, {2, 2}, {3, 2}, {4}, {5, 2}, {6}, {7}, {8}", i++, fip.field_tag,
fip.field_readcount, fip.field_writecount, fip.field_type, fip.field_bit,
fip.field_oktochange?"TRUE ":"FALSE", fip.field_passcount?"TRUE ":"FALSE", fip.field_name);
}
// Return nearest TIFFDataType to the sample type of an image.
static TIFFDataType TIFFSampleToTagType(TIFF tif)
{
uint bps=TIFFhowmany8(tif.tif_dir.td_bitspersample);
switch(tif.tif_dir.td_sampleformat)
{
case SAMPLEFORMAT.IEEEFP: return (bps==4?TIFFDataType.TIFF_FLOAT:TIFFDataType.TIFF_DOUBLE);
case SAMPLEFORMAT.INT: return (bps<=1?TIFFDataType.TIFF_SBYTE:bps<=2?TIFFDataType.TIFF_SSHORT:TIFFDataType.TIFF_SLONG);
case SAMPLEFORMAT.UINT: return (bps<=1?TIFFDataType.TIFF_BYTE:bps<=2?TIFFDataType.TIFF_SHORT:TIFFDataType.TIFF_LONG);
case SAMPLEFORMAT.VOID: return TIFFDataType.TIFF_UNDEFINED;
}
// NOTREACHED
return TIFFDataType.TIFF_UNDEFINED;
}
public static bool _TIFFMergeFieldInfo(TIFF tif, List<TIFFFieldInfo> info)
{
string module="_TIFFMergeFieldInfo";
tif.tif_foundfield=null;
try
{
foreach(TIFFFieldInfo fi in info)
{
TIFFFieldInfo fip=TIFFFindFieldInfo(tif, fi.field_tag, fi.field_type);
if(fip==null) tif.tif_fieldinfo.Add(fi);
}
}
catch
{
TIFFErrorExt(tif.tif_clientdata, module, "Failed to allocate field info array");
return false;
}
// Sort the field info by tag number
tif.tif_fieldinfo.Sort(tagCompare);
return true;
}
public static void TIFFMergeFieldInfo(TIFF tif, List<TIFFFieldInfo> info)
{
if(!_TIFFMergeFieldInfo(tif, info))
{
TIFFErrorExt(tif.tif_clientdata, "TIFFMergeFieldInfo", "Merging block of %d fields failed", info.Count);
}
}
public static void TIFFMergeFieldInfo(TIFF tif, TIFFFieldInfo info)
{
if(!_TIFFMergeFieldInfo(tif, info))
{
TIFFErrorExt(tif.tif_clientdata, "TIFFMergeFieldInfo", "Merging block of 1 fields failed");
}
}
public static void TIFFSetupFieldInfo(TIFF tif, List<TIFFFieldInfo> info)
{
tif.tif_fieldinfo.Clear();
if(!_TIFFMergeFieldInfo(tif, info))
TIFFErrorExt(tif.tif_clientdata, "TIFFSetupFieldInfo", "Setting up field info failed");
}
static void TIFFSwab64BitData(TIFF tif, byte[] buf, int buf_offset, int cc)
{
#if DEBUG
if((cc&7)!=0) throw new Exception("cc&7!=0");
#endif
TIFFSwabArrayOfDouble(buf, buf_offset, (uint)(cc/8));
}
