public static Image FromFile(string path)
{
var stream = new FileStream(path, FileMode.Open, FileAccess.Read, FileShare.Read);
var image = new Image();
try {
var format = FileTypeDetector.DetectFileType(stream);
stream.Seek(0, SeekOrigin.Begin);
image.Metadata = new Metadata(path);
stream.Seek(0, SeekOrigin.Begin);
byte[] data;
switch (format)
{
case FileType.Bmp:
data = new byte[stream.Length];
stream.Read(data, 0, data.Length);
image.source = BmpDecoder.FromBytes(data);
break;
case FileType.WebP:
data = new byte[stream.Length];
stream.Read(data, 0, data.Length);
image.source = WebpDecoder.FromBytes(data);
break;
case FileType.QuickTime:
var qtFt = image.Metadata.Directories
.OfType <QuickTimeFileTypeDirectory>()
.FirstOrDefault()
?.GetDescription(1);
if (qtFt != "avif" && qtFt != "avis" && qtFt != "av01")
{
return(null);
}
data = new byte[stream.Length];
stream.Read(data, 0, data.Length);
image.source = AvifDecoder.FromBytes(data);
break;
case FileType.Heif:
data = new byte[stream.Length];
stream.Read(data, 0, data.Length);
image.source = HeifDecoder.FromBytes(data);
break;
case FileType.Jpeg:
case FileType.Tiff:
case FileType.Png:
case FileType.Gif:
case FileType.Ico:
image.source = WpfDecoder.FromStream(stream);
break;
case FileType.Unknown:
if (stream.Length < 4)
{
return(null);
}
var header = new byte[4];
stream.Read(header, 0, 4);
if (FlifDecoder.MagicDetect(header) == DetectResult.Yes)
{
data = new byte[stream.Length];
stream.Seek(0, SeekOrigin.Begin);
stream.Read(data, 0, data.Length);
image.source = FlifDecoder.FromBytes(data);
}
break;
default:
return(null);
}
return(image.source != null ? image : null);
}
catch (Exception) {
return(null);
}
finally {
stream.Dispose();
}
}
MyExifData get_exif_data(string str_file)
{
MyExifData myExifData;
myExifData.bSuccessExifData = false;
myExifData.strFileExt = null;
myExifData.bImage = false;
myExifData.bVideo = false;
myExifData.dtDate = new DateTime();
myExifData.bLoadFileFail = true;
FileStream myStream = null;
try
{
myStream = new FileStream(str_file, FileMode.Open);
FileType fileType = FileTypeDetector.DetectFileType(myStream);
myStream.Close();
IEnumerable <MetadataExtractor.Directory> directories;
directories = ImageMetadataReader.ReadMetadata(str_file);
DateTime dtTime;
myExifData.bLoadFileFail = false;
if (fileType == FileType.Jpeg || fileType == FileType.Png || fileType == FileType.Bmp)
{
var subIfdDirectory = directories.OfType <ExifSubIfdDirectory>().FirstOrDefault();
var dateTime = subIfdDirectory?.GetDescription(ExifDirectoryBase.TagDateTimeOriginal);
if (dateTime != null)
{
dtTime = ConvertDateExif(dateTime);
myExifData.bSuccessExifData = true;
myExifData.strFileExt = Path.GetExtension(str_file);
myExifData.bImage = true;
myExifData.bVideo = false;
myExifData.dtDate = dtTime;
}
}
else if (fileType == FileType.QuickTime)//동영상일 경우
{
bool bUseVideoFile = UseVideoFile(str_file);
if (bUseVideoFile)
{
var subIfdDirectory = directories.OfType <QuickTimeMovieHeaderDirectory>().FirstOrDefault();
var dateTime = subIfdDirectory?.GetDescription(QuickTimeMovieHeaderDirectory.TagCreated);
if (dateTime != null)
{
dtTime = ConvertDateVideo(dateTime);
myExifData.bSuccessExifData = true;
myExifData.strFileExt = Path.GetExtension(str_file);
myExifData.bImage = false;
myExifData.bVideo = true;
myExifData.dtDate = dtTime;
}
}
}
}
catch (MetadataExtractor.ImageProcessingException e)
{
//WriteLog("Exception-" + str_file);
string strMsg = string.Format("Exception-{0}", str_file);
m_queueLogMsg.Enqueue(strMsg);
return(myExifData);
}
catch (System.UnauthorizedAccessException e)
{
//WriteLog("Exception-" + str_file);
if (myStream != null)
{
myStream.Close();
}
string strMsg = string.Format("Exception-{0}", str_file);
m_queueLogMsg.Enqueue(strMsg);
return(myExifData);
}
catch (System.IO.IOException e)
{
//WriteLog("Exception-" + str_file);
string strMsg = string.Format("Exception-{0}", str_file);
m_queueLogMsg.Enqueue(strMsg);
return(myExifData);
}
return(myExifData);
}
public static DirectoryList ReadMetadata([NotNull] Stream stream)
{
var fileType = FileTypeDetector.DetectFileType(stream);
var fileTypeDirectory = new FileTypeDirectory(fileType);
switch (fileType)
{
case FileType.Jpeg:
return(Append(JpegMetadataReader.ReadMetadata(stream), fileTypeDirectory));
case FileType.Tiff:
case FileType.Arw:
case FileType.Cr2:
case FileType.Nef:
case FileType.Orf:
case FileType.Rw2:
return(Append(TiffMetadataReader.ReadMetadata(stream), fileTypeDirectory));
case FileType.Psd:
return(Append(PsdMetadataReader.ReadMetadata(stream), fileTypeDirectory));
case FileType.Png:
return(Append(PngMetadataReader.ReadMetadata(stream), fileTypeDirectory));
case FileType.Bmp:
return(new Directory[] { BmpMetadataReader.ReadMetadata(stream), fileTypeDirectory });
case FileType.Gif:
return(Append(GifMetadataReader.ReadMetadata(stream), fileTypeDirectory));
case FileType.Ico:
return(Append(IcoMetadataReader.ReadMetadata(stream), fileTypeDirectory));
case FileType.Pcx:
return(new Directory[] { PcxMetadataReader.ReadMetadata(stream), fileTypeDirectory });
case FileType.Riff:
return(Append(WebPMetadataReader.ReadMetadata(stream), fileTypeDirectory));
case FileType.Raf:
return(Append(RafMetadataReader.ReadMetadata(stream), fileTypeDirectory));
case FileType.QuickTime:
return(Append(QuickTimeMetadataReader.ReadMetadata(stream), fileTypeDirectory));
case FileType.Netpbm:
return(new Directory[] { NetpbmMetadataReader.ReadMetadata(stream), fileTypeDirectory });
case FileType.Unknown:
throw new ImageProcessingException("File format could not be determined");
case FileType.Crw:
default:
throw new ImageProcessingException("File format is not supported");
}
DirectoryList Append(IEnumerable <Directory> list, Directory directory)
=> new List <Directory>(list)
{
directory
};
}
/// <summary>Reads metadata from an <see cref="Stream"/>.</summary>
/// <param name="stream">A stream from which the file data may be read. The stream must be positioned at the beginning of the file's data.</param>
/// <returns>A list of <see cref="Directory"/> instances containing the various types of metadata found within the file's data.</returns>
/// <exception cref="ImageProcessingException">The file type is unknown, or processing errors occurred.</exception>
/// <exception cref="System.IO.IOException"/>
public static DirectoryList ReadMetadata(Stream stream)
{
var fileType = FileTypeDetector.DetectFileType(stream);
var fileTypeDirectory = new FileTypeDirectory(fileType);
switch (fileType)
{
case FileType.Jpeg:
return(Append(JpegMetadataReader.ReadMetadata(stream), fileTypeDirectory));
case FileType.Tiff:
case FileType.Arw:
case FileType.Cr2:
case FileType.Nef:
case FileType.Orf:
case FileType.Rw2:
return(Append(TiffMetadataReader.ReadMetadata(stream), fileTypeDirectory));
case FileType.Psd:
return(Append(PsdMetadataReader.ReadMetadata(stream), fileTypeDirectory));
case FileType.Png:
return(Append(PngMetadataReader.ReadMetadata(stream), fileTypeDirectory));
case FileType.Bmp:
return(Append(BmpMetadataReader.ReadMetadata(stream), fileTypeDirectory));
case FileType.Gif:
return(Append(GifMetadataReader.ReadMetadata(stream), fileTypeDirectory));
case FileType.Ico:
return(Append(IcoMetadataReader.ReadMetadata(stream), fileTypeDirectory));
case FileType.Pcx:
return(new Directory[] { PcxMetadataReader.ReadMetadata(stream), fileTypeDirectory });
case FileType.WebP:
return(Append(WebPMetadataReader.ReadMetadata(stream), fileTypeDirectory));
case FileType.Avi:
return(Append(AviMetadataReader.ReadMetadata(stream), fileTypeDirectory));
case FileType.Wav:
return(Append(WavMetadataReader.ReadMetadata(stream), fileTypeDirectory));
case FileType.Raf:
return(Append(RafMetadataReader.ReadMetadata(stream), fileTypeDirectory));
case FileType.Eps:
return(Append(EpsMetadataReader.ReadMetadata(stream), fileTypeDirectory));
case FileType.QuickTime:
case FileType.Crx:
return(Append(QuickTimeMetadataReader.ReadMetadata(stream), fileTypeDirectory));
case FileType.Netpbm:
return(new Directory[] { NetpbmMetadataReader.ReadMetadata(stream), fileTypeDirectory });
case FileType.Tga:
return(Append(TgaMetadataReader.ReadMetadata(stream), fileTypeDirectory));
case FileType.Unknown:
throw new ImageProcessingException("File format could not be determined");
case FileType.Riff:
case FileType.Crw:
default:
throw new ImageProcessingException("File format is not supported");
}