/// <exception cref="System.IO.IOException"/>
private void SetInt32(Com.Drew.Metadata.Directory directory, int tagType, RandomAccessReader reader)
{
int i = reader.GetInt32(tagType);
if (i != 0)
{
directory.SetInt(tagType, i);
}
}
private static void ProcessTag(Com.Drew.Metadata.Directory directory, int tagType, int tagValueOffset, int componentCount, int formatCode, RandomAccessReader reader)
{
switch (formatCode)
{
case FmtUndefined:
{
// Directory simply stores raw values
// The display side uses a Descriptor class per directory to turn the raw values into 'pretty' descriptions
// this includes exif user comments
directory.SetByteArray(tagType, reader.GetBytes(tagValueOffset, componentCount));
break;
}
case FmtString:
{
string @string = reader.GetNullTerminatedString(tagValueOffset, componentCount);
directory.SetString(tagType, @string);
break;
}
case FmtSrational:
{
if (componentCount == 1)
{
directory.SetRational(tagType, new Rational(reader.GetInt32(tagValueOffset), reader.GetInt32(tagValueOffset + 4)));
}
else
{
if (componentCount > 1)
{
Rational[] rationals = new Rational[componentCount];
for (int i = 0; i < componentCount; i++)
{
rationals[i] = new Rational(reader.GetInt32(tagValueOffset + (8 * i)), reader.GetInt32(tagValueOffset + 4 + (8 * i)));
}
directory.SetRationalArray(tagType, rationals);
}
}
break;
}
case FmtUrational:
{
if (componentCount == 1)
{
directory.SetRational(tagType, new Rational(reader.GetUInt32(tagValueOffset), reader.GetUInt32(tagValueOffset + 4)));
}
else
{
if (componentCount > 1)
{
Rational[] rationals = new Rational[componentCount];
for (int i = 0; i < componentCount; i++)
{
rationals[i] = new Rational(reader.GetUInt32(tagValueOffset + (8 * i)), reader.GetUInt32(tagValueOffset + 4 + (8 * i)));
}
directory.SetRationalArray(tagType, rationals);
}
}
break;
}
case FmtSingle:
{
if (componentCount == 1)
{
directory.SetFloat(tagType, reader.GetFloat32(tagValueOffset));
}
else
{
float[] floats = new float[componentCount];
for (int i = 0; i < componentCount; i++)
{
floats[i] = reader.GetFloat32(tagValueOffset + (i * 4));
}
directory.SetFloatArray(tagType, floats);
}
break;
}
case FmtDouble:
{
if (componentCount == 1)
{
directory.SetDouble(tagType, reader.GetDouble64(tagValueOffset));
}
else
{
double[] doubles = new double[componentCount];
for (int i = 0; i < componentCount; i++)
{
doubles[i] = reader.GetDouble64(tagValueOffset + (i * 4));
}
directory.SetDoubleArray(tagType, doubles);
}
break;
}
case FmtSbyte:
{
//
// Note that all integral types are stored as int32 internally (the largest supported by TIFF)
//
if (componentCount == 1)
{
directory.SetInt(tagType, reader.GetInt8(tagValueOffset));
}
else
{
int[] bytes = new int[componentCount];
for (int i = 0; i < componentCount; i++)
{
bytes[i] = reader.GetInt8(tagValueOffset + i);
}
directory.SetIntArray(tagType, bytes);
}
break;
}
case FmtByte:
{
if (componentCount == 1)
{
directory.SetInt(tagType, reader.GetUInt8(tagValueOffset));
}
else
{
int[] bytes = new int[componentCount];
for (int i = 0; i < componentCount; i++)
{
bytes[i] = reader.GetUInt8(tagValueOffset + i);
}
directory.SetIntArray(tagType, bytes);
}
break;
}
case FmtUshort:
{
if (componentCount == 1)
{
int i = reader.GetUInt16(tagValueOffset);
directory.SetInt(tagType, i);
}
else
{
int[] ints = new int[componentCount];
for (int i = 0; i < componentCount; i++)
{
ints[i] = reader.GetUInt16(tagValueOffset + (i * 2));
}
directory.SetIntArray(tagType, ints);
}
break;
}
case FmtSshort:
{
if (componentCount == 1)
{
int i = reader.GetInt16(tagValueOffset);
directory.SetInt(tagType, i);
}
else
{
int[] ints = new int[componentCount];
for (int i = 0; i < componentCount; i++)
{
ints[i] = reader.GetInt16(tagValueOffset + (i * 2));
}
directory.SetIntArray(tagType, ints);
}
break;
}
case FmtSlong:
case FmtUlong:
{
// NOTE 'long' in this case means 32 bit, not 64
if (componentCount == 1)
{
int i = reader.GetInt32(tagValueOffset);
directory.SetInt(tagType, i);
}
else
{
int[] ints = new int[componentCount];
for (int i = 0; i < componentCount; i++)
{
ints[i] = reader.GetInt32(tagValueOffset + (i * 4));
}
directory.SetIntArray(tagType, ints);
}
break;
}
default:
{
directory.AddError("Unknown format code " + formatCode + " for tag " + tagType);
break;
}
}
}
/// <exception cref="System.IO.IOException"/>
private void ProcessTag(SequentialReader reader, Com.Drew.Metadata.Directory directory, int directoryType, int tagType, int tagByteCount)
{
int tagIdentifier = tagType | (directoryType << 8);
string @string = null;
switch (tagIdentifier)
{
case IptcDirectory.TagApplicationRecordVersion:
{
// short
int shortValue = reader.GetUInt16();
reader.Skip(tagByteCount - 2);
directory.SetInt(tagIdentifier, shortValue);
return;
}
case IptcDirectory.TagUrgency:
{
// byte
directory.SetInt(tagIdentifier, reader.GetUInt8());
reader.Skip(tagByteCount - 1);
return;
}
case IptcDirectory.TagReleaseDate:
case IptcDirectory.TagDateCreated:
{
// Date object
if (tagByteCount >= 8)
{
@string = reader.GetString(tagByteCount);
try
{
int year = System.Convert.ToInt32(Sharpen.Runtime.Substring(@string, 0, 4));
int month = System.Convert.ToInt32(Sharpen.Runtime.Substring(@string, 4, 6)) - 1;
int day = System.Convert.ToInt32(Sharpen.Runtime.Substring(@string, 6, 8));
DateTime date = new Sharpen.GregorianCalendar(year, month, day).GetTime();
directory.SetDate(tagIdentifier, date);
return;
}
catch (FormatException)
{
}
}
else
{
// fall through and we'll process the 'string' value below
reader.Skip(tagByteCount);
}
goto case IptcDirectory.TagReleaseTime;
}
case IptcDirectory.TagReleaseTime:
case IptcDirectory.TagTimeCreated:
default:
{
break;
}
}
// time...
// fall through
// If we haven't returned yet, treat it as a string
// NOTE that there's a chance we've already loaded the value as a string above, but failed to parse the value
if (@string == null)
{
@string = reader.GetString(tagByteCount, Runtime.GetProperty("file.encoding"));
}
// "ISO-8859-1"
if (directory.ContainsTag(tagIdentifier))
{
// this fancy string[] business avoids using an ArrayList for performance reasons
string[] oldStrings = directory.GetStringArray(tagIdentifier);
string[] newStrings;
if (oldStrings == null)
{
newStrings = new string[1];
}
else
{
newStrings = new string[oldStrings.Length + 1];
System.Array.Copy(oldStrings, 0, newStrings, 0, oldStrings.Length);
}
newStrings[newStrings.Length - 1] = @string;
directory.SetStringArray(tagIdentifier, newStrings);
}
else
{
directory.SetString(tagIdentifier, @string);
}
}
