public virtual void Populate(JpegInfo info, ExifIFD ifd)
{
if (ifd == ExifIFD.Exif)
{
switch ((ExifId)this.Tag)
{
case ExifId.ImageWidth: info.Width = GetInt(0); break;
case ExifId.ImageHeight: info.Height = GetInt(0); break;
case ExifId.Orientation: info.Orientation = (ExifOrientation)GetInt(0); break;
case ExifId.XResolution: info.XResolution = GetNumericValue(0); break;
case ExifId.YResolution: info.YResolution = GetNumericValue(0); break;
case ExifId.ResolutionUnit: info.ResolutionUnit = (ExifUnit)GetInt(0); break;
case ExifId.DateTime: info.DateTime = GetStringValue(); break;
case ExifId.DateTimeOriginal: info.DateTimeOriginal = GetStringValue(); break;
case ExifId.Description: info.Description = GetStringValue(); break;
case ExifId.Make: info.Make = GetStringValue(); break;
case ExifId.Model: info.Model = GetStringValue(); break;
case ExifId.Software: info.Software = GetStringValue(); break;
case ExifId.Artist: info.Artist = GetStringValue(); break;
case ExifId.ThumbnailOffset: info.ThumbnailOffset = GetInt(0); break;
case ExifId.ThumbnailLength: info.ThumbnailSize = GetInt(0); break;
case ExifId.Copyright: info.Copyright = GetStringValue(); break;
case ExifId.UserComment: info.UserComment = GetStringValue(); break;
case ExifId.ExposureTime: info.ExposureTime = GetNumericValue(0); break;
case ExifId.FNumber: info.FNumber = GetNumericValue(0); break;
case ExifId.FlashUsed: info.Flash = (ExifFlash)GetInt(0); break;
default: break;
}
}
else if (ifd == ExifIFD.Gps)
{
switch ((ExifGps)this.Tag)
{
case ExifGps.LatitudeRef:
{
if (GetStringValue() == "N")
{
info.GpsLatitudeRef = ExifGpsLatitudeRef.North;
}
else if (GetStringValue() == "S")
{
info.GpsLatitudeRef = ExifGpsLatitudeRef.South;
}
} break;
case ExifGps.LongitudeRef:
{
if (GetStringValue() == "E")
{
info.GpsLongitudeRef = ExifGpsLongitudeRef.East;
}
else if (GetStringValue() == "W")
{
info.GpsLongitudeRef = ExifGpsLongitudeRef.West;
}
} break;
case ExifGps.Latitude:
{
if (Components == 3)
{
info.GpsLatitude[0] = GetNumericValue(0);
info.GpsLatitude[1] = GetNumericValue(1);
info.GpsLatitude[2] = GetNumericValue(2);
}
} break;
case ExifGps.Longitude:
{
if (Components == 3)
{
info.GpsLongitude[0] = GetNumericValue(0);
info.GpsLongitude[1] = GetNumericValue(1);
info.GpsLongitude[2] = GetNumericValue(2);
}
} break;
}
}
}
private void ProcessExifDir(byte[] section, int offsetDir, int offsetBase, int length, int depth, ExifIFD ifd)
{
if (depth > 4)
{
// corrupted Exif header...
return;
}
ushort numEntries = ExifIO.ReadUShort(section, offsetDir, littleEndian);
if (offsetDir + 2 + 12 * numEntries >= offsetDir + length)
{
// too long
return;
}
int offset = 0;
for (int de = 0; de < numEntries; ++de)
{
offset = DirOffset(offsetDir, de);
ExifTag exifTag = new ExifTag(section, offset, offsetBase, length, littleEndian);
if (!exifTag.IsValid)
continue;
switch (exifTag.Tag)
{
case (int)ExifIFD.Exif:
{
int dirStart = offsetBase + exifTag.GetInt(0);
if (dirStart <= offsetBase + length)
{
ProcessExifDir(section, dirStart, offsetBase, length, depth + 1, ExifIFD.Exif);
}
} break;
case (int)ExifIFD.Gps:
{
int dirStart = offsetBase + exifTag.GetInt(0);
if (dirStart <= offsetBase + length)
{
ProcessExifDir(section, dirStart, offsetBase, length, depth + 1, ExifIFD.Gps);
}
} break;
default:
{
exifTag.Populate(info, ifd);
} break;
}
}
// final link defined?
offset = DirOffset(offsetDir, numEntries) + 4;
if (offset <= offsetBase + length)
{
offset = ExifIO.ReadInt(section, offsetDir + 2 + 12 * numEntries, littleEndian);
if (offset > 0)
{
int subDirStart = offsetBase + offset;
if (subDirStart <= offsetBase + length && subDirStart >= offsetBase)
{
ProcessExifDir(section, subDirStart, offsetBase, length, depth + 1, ifd);
}
}
}
if (info.ThumbnailData == null && info.ThumbnailOffset > 0 && info.ThumbnailSize > 0)
{
// store it.
info.ThumbnailData = new byte[info.ThumbnailSize];
Array.Copy(section, offsetBase + info.ThumbnailOffset, info.ThumbnailData, 0, info.ThumbnailSize);
}
}
private void ProcessExifDir(byte[] section, int offsetDir, int offsetBase, int length, int depth, ExifIFD ifd)
{
if (depth > 4)
{
// corrupted Exif header...
return;
}
ushort numEntries = ExifIO.ReadUShort(section, offsetDir, littleEndian);
if (offsetDir + 2 + 12 * numEntries >= offsetDir + length)
{
// too long
return;
}
int offset = 0;
for (int de = 0; de < numEntries; ++de)
{
offset = DirOffset(offsetDir, de);
ExifTag exifTag = new ExifTag(section, offset, offsetBase, length, littleEndian);
if (!exifTag.IsValid)
{
continue;
}
switch (exifTag.Tag)
{
case (int)ExifIFD.Exif:
{
int dirStart = offsetBase + exifTag.GetInt(0);
if (dirStart <= offsetBase + length)
{
ProcessExifDir(section, dirStart, offsetBase, length, depth + 1, ExifIFD.Exif);
}
} break;
case (int)ExifIFD.Gps:
{
int dirStart = offsetBase + exifTag.GetInt(0);
if (dirStart <= offsetBase + length)
{
ProcessExifDir(section, dirStart, offsetBase, length, depth + 1, ExifIFD.Gps);
}
} break;
default:
{
exifTag.Populate(info, ifd);
} break;
}
}
// final link defined?
offset = DirOffset(offsetDir, numEntries) + 4;
if (offset <= offsetBase + length)
{
offset = ExifIO.ReadInt(section, offsetDir + 2 + 12 * numEntries, littleEndian);
if (offset > 0)
{
int subDirStart = offsetBase + offset;
if (subDirStart <= offsetBase + length && subDirStart >= offsetBase)
{
ProcessExifDir(section, subDirStart, offsetBase, length, depth + 1, ifd);
}
}
}
if (info.ThumbnailData == null && info.ThumbnailOffset > 0 && info.ThumbnailSize > 0)
{
// store it.
info.ThumbnailData = new byte[info.ThumbnailSize];
Array.Copy(section, offsetBase + info.ThumbnailOffset, info.ThumbnailData, 0, info.ThumbnailSize);
}
}
public virtual void Populate(JpegInfo info, ExifIFD ifd)
{
if (ifd == ExifIFD.Exif)
{
switch ((ExifId)this.Tag)
{
case ExifId.ImageWidth: info.Width = GetInt(0); break;
case ExifId.ImageHeight: info.Height = GetInt(0); break;
case ExifId.Orientation: info.Orientation = (ExifOrientation)GetInt(0); break;
case ExifId.XResolution: info.XResolution = GetNumericValue(0); break;
case ExifId.YResolution: info.YResolution = GetNumericValue(0); break;
case ExifId.ResolutionUnit: info.ResolutionUnit = (ExifUnit)GetInt(0); break;
case ExifId.DateTime: info.DateTime = GetStringValue(); break;
case ExifId.DateTimeOriginal: info.DateTimeOriginal = GetStringValue(); break;
case ExifId.Description: info.Description = GetStringValue(); break;
case ExifId.Make: info.Make = GetStringValue(); break;
case ExifId.Model: info.Model = GetStringValue(); break;
case ExifId.Software: info.Software = GetStringValue(); break;
case ExifId.Artist: info.Artist = GetStringValue(); break;
case ExifId.ThumbnailOffset: info.ThumbnailOffset = GetInt(0); break;
case ExifId.ThumbnailLength: info.ThumbnailSize = GetInt(0); break;
case ExifId.Copyright: info.Copyright = GetStringValue(); break;
case ExifId.UserComment: info.UserComment = GetStringValue(); break;
case ExifId.ExposureTime: info.ExposureTime = GetNumericValue(0); break;
case ExifId.FNumber: info.FNumber = GetNumericValue(0); break;
case ExifId.FlashUsed: info.Flash = (ExifFlash)GetInt(0); break;
default: break;
}
}
else if (ifd == ExifIFD.Gps)
{
switch ((ExifGps)this.Tag)
{
case ExifGps.LatitudeRef:
{
if (GetStringValue() == "N") info.GpsLatitudeRef = ExifGpsLatitudeRef.North;
else if (GetStringValue() == "S") info.GpsLatitudeRef = ExifGpsLatitudeRef.South;
} break;
case ExifGps.LongitudeRef:
{
if (GetStringValue() == "E") info.GpsLongitudeRef = ExifGpsLongitudeRef.East;
else if (GetStringValue() == "W") info.GpsLongitudeRef = ExifGpsLongitudeRef.West;
} break;
case ExifGps.Latitude:
{
if (Components == 3)
{
info.GpsLatitude[0] = GetNumericValue(0);
info.GpsLatitude[1] = GetNumericValue(1);
info.GpsLatitude[2] = GetNumericValue(2);
}
} break;
case ExifGps.Longitude:
{
if (Components == 3)
{
info.GpsLongitude[0] = GetNumericValue(0);
info.GpsLongitude[1] = GetNumericValue(1);
info.GpsLongitude[2] = GetNumericValue(2);
}
} break;
}
}
}
public virtual void Populate(JpegInfo info, ExifIFD ifd, long sectionStart)
{
if (ifd == ExifIFD.Exif)
{
switch ((ExifId)this.Tag)
{
case ExifId.FlashUsed:
info.Flash = (ExifFlash)this.GetInt(0);
break;
case ExifId.UserComment:
info.UserComment = this.GetStringValue();
break;
case ExifId.ExposureTime:
info.ExposureTime = this.GetNumericValue(0);
break;
case ExifId.FNumber:
info.FNumber = this.GetNumericValue(0);
break;
case ExifId.ThumbnailLength:
info.ThumbnailSize = this.GetInt(0);
break;
case ExifId.Copyright:
info.Copyright = this.GetStringValue();
break;
case ExifId.Artist:
info.Artist = this.GetStringValue();
break;
case ExifId.ThumbnailOffset:
info.ThumbnailOffset = this.GetInt(0);
break;
case ExifId.Software:
info.Software = this.GetStringValue();
break;
case ExifId.DateTime:
info.DateTime = this.GetStringValue();
break;
case ExifId.YResolution:
info.YResolution = this.GetNumericValue(0);
break;
case ExifId.ResolutionUnit:
info.ResolutionUnit = (ExifUnit)this.GetInt(0);
break;
case ExifId.Description:
info.Description = this.GetStringValue();
break;
case ExifId.Make:
info.Make = this.GetStringValue();
break;
case ExifId.Model:
info.Model = this.GetStringValue();
break;
case ExifId.Orientation:
info.OrientationOffset = sectionStart + this.ValueOffset;
info.Orientation = (ExifOrientation)this.GetInt(0);
break;
case ExifId.XResolution:
info.XResolution = this.GetNumericValue(0);
break;
case ExifId.ImageWidth:
info.Width = this.GetInt(0);
break;
case ExifId.ImageHeight:
info.Height = this.GetInt(0);
break;
}
}
else
{
if (ifd != ExifIFD.Gps)
{
return;
}
switch (this.Tag)
{
case 1:
if (this.GetStringValue() == "N")
{
info.GpsLatitudeRef = ExifGpsLatitudeRef.North;
break;
}
if (!(this.GetStringValue() == "S"))
{
break;
}
info.GpsLatitudeRef = ExifGpsLatitudeRef.South;
break;
case 2:
if (this.Components != 3)
{
break;
}
info.GpsLatitude[0] = this.GetNumericValue(0);
info.GpsLatitude[1] = this.GetNumericValue(1);
info.GpsLatitude[2] = this.GetNumericValue(2);
break;
case 3:
if (this.GetStringValue() == "E")
{
info.GpsLongitudeRef = ExifGpsLongitudeRef.East;
break;
}
if (!(this.GetStringValue() == "W"))
{
break;
}
info.GpsLongitudeRef = ExifGpsLongitudeRef.West;
break;
case 4:
if (this.Components != 3)
{
break;
}
info.GpsLongitude[0] = this.GetNumericValue(0);
info.GpsLongitude[1] = this.GetNumericValue(1);
info.GpsLongitude[2] = this.GetNumericValue(2);
break;
}
}
}
private void ProcessExifDir(byte[] section, int offsetDir, int offsetBase, int length, int depth, ExifIFD ifd, long sectionStart)
{
if (depth > 4)
{
return;
}
ushort num1 = ExifIO.ReadUShort(section, offsetDir, this.littleEndian);
if (offsetDir + 2 + 12 * (int)num1 >= offsetDir + length)
{
return;
}
for (int num2 = 0; num2 < (int)num1; ++num2)
{
int sectionOffset = this.DirOffset(offsetDir, num2);
ExifTag exifTag = new ExifTag(section, sectionOffset, offsetBase, length, this.littleEndian);
if (exifTag.IsValid)
{
switch (exifTag.Tag)
{
case 34665:
int offsetDir1 = offsetBase + exifTag.GetInt(0);
if (offsetDir1 <= offsetBase + length)
{
this.ProcessExifDir(section, offsetDir1, offsetBase, length, depth + 1, ExifIFD.Exif, sectionStart);
continue;
}
continue;
case 34853:
int offsetDir2 = offsetBase + exifTag.GetInt(0);
if (offsetDir2 <= offsetBase + length)
{
this.ProcessExifDir(section, offsetDir2, offsetBase, length, depth + 1, ExifIFD.Gps, sectionStart);
continue;
}
continue;
default:
exifTag.Populate(this.info, ifd, sectionStart);
continue;
}
}
}
if (this.DirOffset(offsetDir, (int)num1) + 4 <= offsetBase + length)
{
int num2 = ExifIO.ReadInt(section, offsetDir + 2 + 12 * (int)num1, this.littleEndian);
if (num2 > 0)
{
int offsetDir1 = offsetBase + num2;
if (offsetDir1 <= offsetBase + length && offsetDir1 >= offsetBase)
{
this.ProcessExifDir(section, offsetDir1, offsetBase, length, depth + 1, ifd, sectionStart);
}
}
}
if (this.info.ThumbnailData != null || this.info.ThumbnailOffset <= 0 || this.info.ThumbnailSize <= 0)
{
return;
}
this.info.ThumbnailData = new byte[this.info.ThumbnailSize];
Array.Copy((Array)section, offsetBase + this.info.ThumbnailOffset, (Array)this.info.ThumbnailData, 0, this.info.ThumbnailSize);
}
private void ProcessExifDir(byte[] section, int offsetDir, int offsetBase, int length, int depth, ExifIFD ifd)
{
if (depth > 4)
{
return;
}
ushort num1 = ExifIo.ReadUShort(section, offsetDir, _isLittleEndian);
if (offsetDir + 2 + 12 * num1 >= offsetDir + length)
{
return;
}
for (int num2 = 0; num2 < (int)num1; ++num2)
{
int sectionOffset = DirOffset(offsetDir, num2);
ExifTag exifTag = new ExifTag(section, sectionOffset, offsetBase, length, _isLittleEndian);
if (exifTag.IsValid)
{
switch (exifTag.Tag)
{
case 34665:
int offsetDir1 = offsetBase + exifTag.GetInt(0);
if (offsetDir1 <= offsetBase + length)
{
ProcessExifDir(section, offsetDir1, offsetBase, length, depth + 1, ExifIFD.Exif);
}
continue;
case 34853:
int offsetDir2 = offsetBase + exifTag.GetInt(0);
if (offsetDir2 <= offsetBase + length)
{
ProcessExifDir(section, offsetDir2, offsetBase, length, depth + 1, ExifIFD.Gps);
}
continue;
default:
exifTag.Populate(Info, ifd);
continue;
}
}
}
if (DirOffset(offsetDir, num1) + 4 <= offsetBase + length)
{
int num2 = ExifIo.ReadInt(section, offsetDir + 2 + 12 * num1, _isLittleEndian);
if (num2 > 0)
{
int offsetDir1 = offsetBase + num2;
if (offsetDir1 <= offsetBase + length && offsetDir1 >= offsetBase)
{
ProcessExifDir(section, offsetDir1, offsetBase, length, depth + 1, ifd);
}
}
}
if (Info.ThumbnailData != null || Info.ThumbnailOffset <= 0 || Info.ThumbnailSize <= 0)
{
return;
}
Info.ThumbnailData = new byte[Info.ThumbnailSize];
Array.Copy(section, offsetBase + Info.ThumbnailOffset, Info.ThumbnailData, 0, Info.ThumbnailSize);
}
