private static void ThrowExceptionIfJpegResultFail(JpegStatus status)
{
if (status != JpegStatus.Ok)
{
throw new Exception(string.Format("Jpeg のエンコード処理で例外が発生しました。\n{0}", (object)status));
}
}
private static byte[] FixExifData(byte[] originalJpegData)
{
using (JpegDecoder jpegDecoder = new JpegDecoder())
{
using (ExifExtractor exifExtractor = new ExifExtractor())
{
using (ExifBuilder exifBuilder = new ExifBuilder())
{
using (new JpegEncoder())
{
int outOffset;
byte[] out1;
JpegStatus exifData1 = jpegDecoder.GetExifData(out outOffset, out out1, originalJpegData);
if (exifData1 == JpegStatus.WrongFormat)
{
return(originalJpegData);
}
IconConverter.ThrowExceptionIfJpegResultFail(exifData1);
Exif out2;
IconConverter.ThrowExceptionIfJpegResultFail(exifExtractor.Parse(out out2, out1));
out2.Thumbnail = (byte[])null;
IconConverter.ThrowExceptionIfJpegResultFail(jpegDecoder.SetJpegData(originalJpegData));
Size dimension = jpegDecoder.GetDimension();
IconConverter.ThrowExceptionIfJpegResultFail(exifBuilder.SetExif(out2));
byte[] exifData2 = exifBuilder.GetExifData(dimension.Width, dimension.Height);
byte[] numArray = new byte[originalJpegData.Length - out1.Length + exifData2.Length];
int num1 = 0;
Array.Copy((Array)originalJpegData, (Array)numArray, outOffset);
int destinationIndex1 = num1 + outOffset;
Array.Copy((Array)exifData2, 0, (Array)numArray, destinationIndex1, exifData2.Length);
int destinationIndex2 = destinationIndex1 + exifData2.Length;
Array.Copy((Array)originalJpegData, outOffset + out1.Length, (Array)numArray, destinationIndex2, originalJpegData.Length - (outOffset + out1.Length));
int num2 = exifData2.Length - out1.Length;
int index = outOffset - 8;
int num3 = ((int)originalJpegData[index] << 8) + (int)originalJpegData[index + 1] + num2;
numArray[index] = (byte)(num3 >> 8);
numArray[index + 1] = (byte)num3;
return(numArray);
}
}
}
}
}
