public static int GTIFKeyGet(GTIF gtif, geokey_t thekey, out string val, int index, int count)
{
val = null;
if (count < 0)
{
return(0);
}
if (!gtif.gt_keys.ContainsKey(thekey))
{
return(0);
}
GeoKey key = gtif.gt_keys[thekey];
if (key.gk_type != tagtype_t.TYPE_ASCII)
{
return(0);
}
string val_ = (string)key.gk_data;
if (count == 0 || (count + index) > val_.Length)
{
val = val_.Substring(index);
}
else
{
val = val_.Substring(index, count);
}
return(val.Length);
}
public static int GTIFKeyGet(GTIF gtif, geokey_t thekey, out double[] val, int index, int count)
{
val = null;
if (!gtif.gt_keys.ContainsKey(thekey))
{
return(0);
}
GeoKey key = gtif.gt_keys[thekey];
if (key.gk_type != tagtype_t.TYPE_DOUBLE)
{
return(0);
}
double[] val_ = (double[])key.gk_data;
if (count == 0 || (count + index) > val_.Length)
{
count = val_.Length - index;
}
if (count <= 0)
{
return(0);
}
val = new double[count];
Array.Copy(val_, index, val, 0, count);
return(count);
}
public static int GTIFKeyInfo(GTIF gtif, geokey_t key, out tagtype_t type)
{
type = tagtype_t.TYPE_UNKNOWN;
if (!gtif.gt_keys.ContainsKey(key))
{
return(0);
}
GeoKey keyptr = gtif.gt_keys[key];
type = keyptr.gk_type;
return(keyptr.gk_count);
}
public static int GTIFKeyGet(GTIF gtif, geokey_t thekey, out string val)
{
val = null;
if (!gtif.gt_keys.ContainsKey(thekey))
{
return(0);
}
GeoKey key = gtif.gt_keys[thekey];
if (key.gk_type != tagtype_t.TYPE_ASCII)
{
return(0);
}
val = (string)key.gk_data;
return(val.Length);
}
public static bool GTIFKeySet(GTIF gtif, geokey_t keyID, double[] val)
{
if (val == null) // delete the indicated tag
{
if (!gtif.gt_keys.ContainsKey(keyID))
{
return(false);
}
gtif.gt_keys.Remove(keyID);
gtif.gt_flags |= gtiff_flags.FLAG_FILE_MODIFIED;
return(true);
}
if (gtif.gt_keys.ContainsKey(keyID))
{
gtif.gt_keys.Remove(keyID);
gtif.gt_flags |= gtiff_flags.FLAG_FILE_MODIFIED;
}
// We need to create the key
try
{
GeoKey key = new GeoKey();
key.gk_key = keyID;
key.gk_type = tagtype_t.TYPE_DOUBLE;
key.gk_count = val.Length;
double[] tmp = new double[val.Length];
val.CopyTo(tmp, 0);
key.gk_data = tmp;
gtif.gt_keys.Add(keyID, key);
gtif.gt_flags |= gtiff_flags.FLAG_FILE_MODIFIED;
return(true);
}
catch
{
return(false);
}
}
public static bool GTIFKeySet(GTIF gtif, geokey_t keyID, string val)
{
if (val == null) // delete the indicated tag
{
if (!gtif.gt_keys.ContainsKey(keyID))
{
return(false);
}
gtif.gt_keys.Remove(keyID);
gtif.gt_flags |= gtiff_flags.FLAG_FILE_MODIFIED;
return(true);
}
if (gtif.gt_keys.ContainsKey(keyID))
{
gtif.gt_keys.Remove(keyID);
gtif.gt_flags |= gtiff_flags.FLAG_FILE_MODIFIED;
}
val = val.Trim('\0');
// We need to create the key
try
{
GeoKey key = new GeoKey();
key.gk_key = keyID;
key.gk_type = tagtype_t.TYPE_ASCII;
key.gk_count = val.Length;
key.gk_data = val.Substring(0, val.Length);
gtif.gt_keys.Add(keyID, key);
gtif.gt_flags |= gtiff_flags.FLAG_FILE_MODIFIED;
return(true);
}
catch
{
return(false);
}
}
static void PrintKey(GeoKey key, GTIFPrintMethod print, object aux)
{
print("\t\t", aux);
geokey_t keyid=key.gk_key;
print(GTIFKeyName(keyid), aux);
int count=key.gk_count;
string message=string.Format(" ({0},{1}): ", GTIFTypeName(key.gk_type), count);
print(message, aux);
object data=key.gk_data;
switch(key.gk_type)
{
case tagtype_t.TYPE_ASCII:
{
string str=data as string;
if(str==null) throw new Exception("string expected.");
if(str.Length<count) throw new Exception("string too short.");
message="\"";
for(int i=0; i<count; i++)
{
char c=str[i];
if(c=='\n') message+="\\n";
else if(c=='\\') message+="\\\\";
else if(c=='\t') message+="\\t";
else if(c=='\b') message+="\\b";
else if(c=='\r') message+="\\r";
else if(c=='"') message+="\\\"";
else if(c=='\0') message+="\\0";
else message+=c;
}
message+="\"\n";
print(message, aux);
}
break;
case tagtype_t.TYPE_DOUBLE:
double[] dptr=data as double[];
if(dptr==null) throw new Exception("double[] expected.");
if(dptr.Length<count) throw new Exception("double[] too short.");
for(int i=0; i<count; i+=3)
{
int done=Math.Min(i+3, count);
for(int j=i; j<done; j++)
{
message=string.Format(FMT_DOUBLE, dptr[j]);
print(message, aux);
}
print("\n", aux);
}
break;
case tagtype_t.TYPE_SHORT:
ushort[] sptr=data as ushort[];
if(sptr==null) throw new Exception("ushort[] expected.");
if(sptr.Length<count) throw new Exception("ushort[] too short.");
if(count==1)
{
print(GTIFValueName(keyid, sptr[0]), aux);
print("\n", aux);
}
else
{
for(int i=0; i<count; i+=3)
{
int done=Math.Min(i+3, count);
for(int j=i; j<done; j++)
{
message=string.Format(FMT_SHORT, sptr[j]);
print(message, aux);
}
print("\n", aux);
}
}
break;
default:
message=string.Format("Unknown Type ({0})\n", key.gk_type);
print(message, aux);
break;
}
}
static void PrintKey(GeoKey key, GTIFPrintMethod print, object aux)
{
print("\t\t", aux);
geokey_t keyid = key.gk_key;
print(GTIFKeyName(keyid), aux);
int count = key.gk_count;
string message = string.Format(" ({0},{1}): ", GTIFTypeName(key.gk_type), count);
print(message, aux);
object data = key.gk_data;
switch (key.gk_type)
{
case tagtype_t.TYPE_ASCII:
{
string str = data as string;
if (str == null)
{
throw new Exception("string expected.");
}
if (str.Length < count)
{
throw new Exception("string too short.");
}
message = "\"";
for (int i = 0; i < count; i++)
{
char c = str[i];
if (c == '\n')
{
message += "\\n";
}
else if (c == '\\')
{
message += "\\\\";
}
else if (c == '\t')
{
message += "\\t";
}
else if (c == '\b')
{
message += "\\b";
}
else if (c == '\r')
{
message += "\\r";
}
else if (c == '"')
{
message += "\\\"";
}
else if (c == '\0')
{
message += "\\0";
}
else
{
message += c;
}
}
message += "\"\n";
print(message, aux);
}
break;
case tagtype_t.TYPE_DOUBLE:
double[] dptr = data as double[];
if (dptr == null)
{
throw new Exception("double[] expected.");
}
if (dptr.Length < count)
{
throw new Exception("double[] too short.");
}
for (int i = 0; i < count; i += 3)
{
int done = Math.Min(i + 3, count);
for (int j = i; j < done; j++)
{
message = string.Format(FMT_DOUBLE, dptr[j]);
print(message, aux);
}
print("\n", aux);
}
break;
case tagtype_t.TYPE_SHORT:
ushort[] sptr = data as ushort[];
if (sptr == null)
{
throw new Exception("ushort[] expected.");
}
if (sptr.Length < count)
{
throw new Exception("ushort[] too short.");
}
if (count == 1)
{
print(GTIFValueName(keyid, sptr[0]), aux);
print("\n", aux);
}
else
{
for (int i = 0; i < count; i += 3)
{
int done = Math.Min(i + 3, count);
for (int j = i; j < done; j++)
{
message = string.Format(FMT_SHORT, sptr[j]);
print(message, aux);
}
print("\n", aux);
}
}
break;
default:
message = string.Format("Unknown Type ({0})\n", key.gk_type);
print(message, aux);
break;
}
}
// **************************************************************************
// * GTIFNewWithMethods() *
// * *
// * Create a new geotiff, passing in the methods structure to *
// * support not libtiff implementations without replacing the *
// * default methods. *
// **************************************************************************
public static GTIF GTIFNewWithMethods(TIFF tif, TIFFMethod methods)
{
GTIF gt = null;
try
{
gt = new GTIF();
gt.gt_methods = new TIFFMethod();
gt.gt_keys = new Dictionary <geokey_t, GeoKey>();
}
catch
{
return(null);
}
// install TIFF file and I/O methods
gt.gt_tif = tif;
gt.gt_methods.get = methods.get;
gt.gt_methods.set = methods.set;
gt.gt_methods.type = methods.type;
gt.gt_rev_major = GvCurrentRevision;
gt.gt_rev_minor = GvCurrentMinorRev;
gt.gt_version = GvCurrentVersion;
if (tif == null)
{
return(gt);
}
object data;
int nshorts;
// since this is an array, GTIF will allocate the memory
if (!gt.gt_methods.get(tif, (ushort)GTIFF_GEOKEYDIRECTORY, out nshorts, out data))
{
return(gt);
}
if (nshorts < 4)
{
return(null);
}
ushort[] shorts = data as ushort[];
if (shorts == null || shorts.Length < 4)
{
return(null);
}
if (shorts[0] > GvCurrentVersion)
{
return(null);
}
gt.gt_version = shorts[0];
if (shorts[1] > GvCurrentRevision)
{
// issue warning
}
gt.gt_rev_major = shorts[1];
gt.gt_rev_minor = shorts[2];
int count = shorts[3];
if (count == 0)
{
return(gt);
}
if (shorts.Length < (count * 4 + 4))
{
return(null);
}
// If we got here, then the geokey can be parsed
// Get the PARAMS Tags, if any
int ndoubles;
double[] doubles;
if (!gt.gt_methods.get(tif, (ushort)GTIFF_DOUBLEPARAMS, out ndoubles, out data))
{
try
{
doubles = new double[MAX_VALUES];
}
catch
{
return(null);
}
}
else
{
doubles = data as double[];
if (doubles == null)
{
return(null);
}
}
int stringsLength = 0;
string strings = null;
if (gt.gt_methods.get(tif, (ushort)GTIFF_ASCIIPARAMS, out stringsLength, out data))
{
strings = data as string;
if (strings == null)
{
return(null);
}
strings = strings.TrimEnd('\0'); // last NULL doesn't count; "|" used for delimiter
stringsLength = strings.Length;
}
for (int i = 0; i < count; i++)
{
ushort KeyID = shorts[i * 4 + 4];
ushort TIFFTagLocation = shorts[i * 4 + 5];
ushort Count = shorts[i * 4 + 6];
ushort Value_Offset = shorts[i * 4 + 7];
GeoKey keyptr;
try
{
keyptr = new GeoKey();
keyptr.gk_key = (geokey_t)KeyID;
if (TIFFTagLocation != 0)
{
keyptr.gk_type = gt.gt_methods.type(gt.gt_tif, TIFFTagLocation);
}
else
{
keyptr.gk_type = tagtype_t.TYPE_SHORT; //gt.gt_methods.type(gt.gt_tif, (ushort)GTIFF_GEOKEYDIRECTORY);
}
switch (TIFFTagLocation)
{
case (ushort)GTIFF_LOCAL:
// store value into data value
keyptr.gk_data = new ushort[] { Value_Offset };
keyptr.gk_count = 1;
break;
case (ushort)GTIFF_GEOKEYDIRECTORY:
ushort[] s = new ushort[Count];
keyptr.gk_data = s;
Array.Copy(shorts, Value_Offset, s, 0, Count);
keyptr.gk_count = Count;
break;
case (ushort)GTIFF_DOUBLEPARAMS:
double[] d = new double[Count];
keyptr.gk_data = d;
Array.Copy(doubles, Value_Offset, d, 0, Count);
keyptr.gk_count = Count;
break;
case (ushort)GTIFF_ASCIIPARAMS:
string str = strings.Substring(Value_Offset, Count);
str = str.Replace('|', '\0');
str = str.Trim('\0');
keyptr.gk_count = str.Length;
keyptr.gk_data = str;
break;
default:
return(null); // failure
}
}
catch
{
return(null);
}
gt.gt_keys.Add(keyptr.gk_key, keyptr);
}
return(gt);
}
// This function flushes all the GeoTIFF keys that have been set with the
// GTIFKeySet() function into the associated
// TIFF file.
//
// @param gt The GeoTIFF handle returned by GTIFNew.
//
// GTIFWriteKeys() should be called before
// GTIFFree() is used to deallocate a GeoTIFF access handle.
public static bool GTIFWriteKeys(GTIF gt)
{
if ((gt.gt_flags & gtiff_flags.FLAG_FILE_MODIFIED) == 0)
{
return(true);
}
if (gt.gt_tif == null)
{
return(false);
}
List <geokey_t> keys = new List <geokey_t>(gt.gt_keys.Keys);
keys.Sort();
List <ushort> shorts = new List <ushort>();
List <ushort> shortsValues = new List <ushort>();
List <double> doubles = new List <double>();
string strings = "";
// Set up header of ProjectionInfo tag
shorts.Add((ushort)GvCurrentVersion);
shorts.Add((ushort)GvCurrentRevision);
shorts.Add((ushort)GvCurrentMinorRev);
shorts.Add((ushort)keys.Count);
int shortOffset = 4 + keys.Count * 4;
foreach (geokey_t key in keys)
{
GeoKey keyptr = gt.gt_keys[key];
if (keyptr.gk_type == tagtype_t.TYPE_ASCII)
{
string str = keyptr.gk_data as string;
if (str == null)
{
str = "";
}
str = str.Trim('\0');
str += "|";
str = str.Replace('\0', '|');
shorts.Add((ushort)key);
shorts.Add((ushort)GTIFF_ASCIIPARAMS);
shorts.Add((ushort)str.Length);
shorts.Add((ushort)strings.Length);
strings += str;
continue;
}
if (keyptr.gk_type == tagtype_t.TYPE_DOUBLE)
{
double[] dbl = keyptr.gk_data as double[];
if (dbl == null)
{
shorts.Add((ushort)key);
shorts.Add((ushort)GTIFF_DOUBLEPARAMS);
shorts.Add((ushort)0);
shorts.Add((ushort)0);
}
else
{
shorts.Add((ushort)key);
shorts.Add((ushort)GTIFF_DOUBLEPARAMS);
shorts.Add((ushort)dbl.Length);
shorts.Add((ushort)doubles.Count);
doubles.AddRange(dbl);
}
continue;
}
ushort[] sht = keyptr.gk_data as ushort[];
if (sht == null)
{
shorts.Add((ushort)key);
shorts.Add((ushort)GTIFF_LOCAL);
shorts.Add((ushort)0);
shorts.Add((ushort)0);
}
else
{
if (sht.Length < 2)
{
shorts.Add((ushort)key);
shorts.Add((ushort)GTIFF_LOCAL);
shorts.Add((ushort)sht.Length);
if (sht.Length == 1)
{
shorts.Add(sht[0]);
}
else
{
shorts.Add(0);
}
}
else
{
shorts.Add((ushort)key);
shorts.Add((ushort)GTIFF_GEOKEYDIRECTORY);
shorts.Add((ushort)sht.Length);
shorts.Add((ushort)(shortOffset + shortsValues.Count));
shortsValues.AddRange(sht);
}
}
}
if (shorts.Count != shortOffset)
{
return(false);
}
shorts.AddRange(shortsValues);
// Write out the Key Directory
gt.gt_methods.set(gt.gt_tif, (ushort)GTIFF_GEOKEYDIRECTORY, shorts.Count, shorts.ToArray());
// Write out the params directories
if (doubles.Count > 0)
{
gt.gt_methods.set(gt.gt_tif, (ushort)GTIFF_DOUBLEPARAMS, doubles.Count, doubles.ToArray());
}
if (strings.Length > 0)
{
gt.gt_methods.set(gt.gt_tif, (ushort)GTIFF_ASCIIPARAMS, strings.Length, strings);
}
gt.gt_flags &= ~gtiff_flags.FLAG_FILE_MODIFIED;
return(true);
}
public static bool GTIFKeySet(GTIF gtif, geokey_t keyID, string val)
{
if(val==null) // delete the indicated tag
{
if(!gtif.gt_keys.ContainsKey(keyID)) return false;
gtif.gt_keys.Remove(keyID);
gtif.gt_flags|=gtiff_flags.FLAG_FILE_MODIFIED;
return true;
}
if(gtif.gt_keys.ContainsKey(keyID))
{
gtif.gt_keys.Remove(keyID);
gtif.gt_flags|=gtiff_flags.FLAG_FILE_MODIFIED;
}
val=val.Trim('\0');
// We need to create the key
try
{
GeoKey key=new GeoKey();
key.gk_key=keyID;
key.gk_type=tagtype_t.TYPE_ASCII;
key.gk_count=val.Length;
key.gk_data=val.Substring(0, val.Length);
gtif.gt_keys.Add(keyID, key);
gtif.gt_flags|=gtiff_flags.FLAG_FILE_MODIFIED;
return true;
}
catch
{
return false;
}
}
public static bool GTIFKeySet(GTIF gtif, geokey_t keyID, double[] val)
{
if(val==null) // delete the indicated tag
{
if(!gtif.gt_keys.ContainsKey(keyID)) return false;
gtif.gt_keys.Remove(keyID);
gtif.gt_flags|=gtiff_flags.FLAG_FILE_MODIFIED;
return true;
}
if(gtif.gt_keys.ContainsKey(keyID))
{
gtif.gt_keys.Remove(keyID);
gtif.gt_flags|=gtiff_flags.FLAG_FILE_MODIFIED;
}
// We need to create the key
try
{
GeoKey key=new GeoKey();
key.gk_key=keyID;
key.gk_type=tagtype_t.TYPE_DOUBLE;
key.gk_count=val.Length;
double[] tmp=new double[val.Length];
val.CopyTo(tmp, 0);
key.gk_data=tmp;
gtif.gt_keys.Add(keyID, key);
gtif.gt_flags|=gtiff_flags.FLAG_FILE_MODIFIED;
return true;
}
catch
{
return false;
}
}
// **************************************************************************
// * GTIFNewWithMethods() *
// * *
// * Create a new geotiff, passing in the methods structure to *
// * support not libtiff implementations without replacing the *
// * default methods. *
// **************************************************************************
public static GTIF GTIFNewWithMethods(TIFF tif, TIFFMethod methods)
{
GTIF gt=null;
try
{
gt=new GTIF();
gt.gt_methods=new TIFFMethod();
gt.gt_keys=new Dictionary<geokey_t, GeoKey>();
}
catch
{
return null;
}
// install TIFF file and I/O methods
gt.gt_tif=tif;
gt.gt_methods.get=methods.get;
gt.gt_methods.set=methods.set;
gt.gt_methods.type=methods.type;
gt.gt_rev_major=GvCurrentRevision;
gt.gt_rev_minor=GvCurrentMinorRev;
gt.gt_version=GvCurrentVersion;
if(tif==null) return gt;
object data;
int nshorts;
// since this is an array, GTIF will allocate the memory
if(!gt.gt_methods.get(tif, (ushort)GTIFF_GEOKEYDIRECTORY, out nshorts, out data)) return gt;
if(nshorts<4) return null;
ushort[] shorts=data as ushort[];
if(shorts==null||shorts.Length<4) return null;
if(shorts[0]>GvCurrentVersion) return null;
gt.gt_version=shorts[0];
if(shorts[1]>GvCurrentRevision)
{
// issue warning
}
gt.gt_rev_major=shorts[1];
gt.gt_rev_minor=shorts[2];
int count=shorts[3];
if(count==0) return gt;
if(shorts.Length<(count*4+4)) return null;
// If we got here, then the geokey can be parsed
// Get the PARAMS Tags, if any
int ndoubles;
double[] doubles;
if(!gt.gt_methods.get(tif, (ushort)GTIFF_DOUBLEPARAMS, out ndoubles, out data))
{
try
{
doubles=new double[MAX_VALUES];
}
catch
{
return null;
}
}
else
{
doubles=data as double[];
if(doubles==null) return null;
}
int stringsLength=0;
string strings=null;
if(gt.gt_methods.get(tif, (ushort)GTIFF_ASCIIPARAMS, out stringsLength, out data))
{
strings=data as string;
if(strings==null) return null;
strings=strings.TrimEnd('\0'); // last NULL doesn't count; "|" used for delimiter
stringsLength=strings.Length;
}
for(int i=0; i<count; i++)
{
ushort KeyID=shorts[i*4+4];
ushort TIFFTagLocation=shorts[i*4+5];
ushort Count=shorts[i*4+6];
ushort Value_Offset=shorts[i*4+7];
GeoKey keyptr;
try
{
keyptr=new GeoKey();
keyptr.gk_key=(geokey_t)KeyID;
if(TIFFTagLocation!=0) keyptr.gk_type=gt.gt_methods.type(gt.gt_tif, TIFFTagLocation);
else keyptr.gk_type=tagtype_t.TYPE_SHORT; //gt.gt_methods.type(gt.gt_tif, (ushort)GTIFF_GEOKEYDIRECTORY);
switch(TIFFTagLocation)
{
case (ushort)GTIFF_LOCAL:
// store value into data value
keyptr.gk_data=new ushort[] { Value_Offset };
keyptr.gk_count=1;
break;
case (ushort)GTIFF_GEOKEYDIRECTORY:
ushort[] s=new ushort[Count];
keyptr.gk_data=s;
Array.Copy(shorts, Value_Offset, s, 0, Count);
keyptr.gk_count=Count;
break;
case (ushort)GTIFF_DOUBLEPARAMS:
double[] d=new double[Count];
keyptr.gk_data=d;
Array.Copy(doubles, Value_Offset, d, 0, Count);
keyptr.gk_count=Count;
break;
case (ushort)GTIFF_ASCIIPARAMS:
string str=strings.Substring(Value_Offset, Count);
str=str.Replace('|', '\0');
str=str.Trim('\0');
keyptr.gk_count=str.Length;
keyptr.gk_data=str;
break;
default:
return null; // failure
}
}
catch
{
return null;
}
gt.gt_keys.Add(keyptr.gk_key, keyptr);
}
return gt;
}
