/// <summary>
/// Gets the file bytes.
/// </summary>
/// <param name="context">The context.</param>
/// <param name="uploadedFile">The uploaded file.</param>
/// <returns></returns>
public override Stream GetFileContentStream( HttpContext context, HttpPostedFile uploadedFile )
{
if ( uploadedFile.ContentType == "image/svg+xml" )
{
return base.GetFileContentStream( context, uploadedFile );
}
else
{
Bitmap bmp = new Bitmap( uploadedFile.InputStream );
// Check to see if we should flip the image.
var exif = new EXIFextractor( ref bmp, "\n" );
if ( exif["Orientation"] != null )
{
RotateFlipType flip = OrientationToFlipType( exif["Orientation"].ToString() );
// don't flip if orientation is correct
if ( flip != RotateFlipType.RotateNoneFlipNone )
{
bmp.RotateFlip( flip );
exif.setTag( 0x112, "1" ); // reset orientation tag
}
}
if ( context.Request.QueryString["enableResize"] != null )
{
Bitmap resizedBmp = RoughResize( bmp, 1024, 768 );
bmp = resizedBmp;
}
var stream = new MemoryStream();
bmp.Save( stream, ContentTypeToImageFormat( uploadedFile.ContentType ) );
return stream;
}
}
/// <summary>
/// Gets the file bytes.
/// </summary>
/// <param name="context">The context.</param>
/// <param name="uploadedFile">The uploaded file.</param>
/// <returns></returns>
public static Stream GetFileContentStream( HttpPostedFile uploadedFile, bool enableResize, bool errorIfNotImage = false )
{
if ( uploadedFile.ContentType == "image/svg+xml" || uploadedFile.ContentType == "image/tiff" )
{
return uploadedFile.InputStream;
}
else
{
try
{
Bitmap bmp = new Bitmap( uploadedFile.InputStream );
// Check to see if we should flip the image.
var exif = new EXIFextractor( ref bmp, "\n" );
if ( exif["Orientation"] != null )
{
RotateFlipType flip = OrientationToFlipType( exif["Orientation"].ToString() );
// don't flip if orientation is correct
if ( flip != RotateFlipType.RotateNoneFlipNone )
{
bmp.RotateFlip( flip );
exif.setTag( 0x112, "1" ); // reset orientation tag
}
}
if ( enableResize )
{
Bitmap resizedBmp = RoughResize( bmp, 1024, 768 );
bmp = resizedBmp;
}
var stream = new MemoryStream();
bmp.Save( stream, ContentTypeToImageFormat( uploadedFile.ContentType ) );
return stream;
}
catch
{
if ( errorIfNotImage )
{
throw new InvalidDataException( "The file is not a valid image type" );
}
// if it couldn't be converted to a bitmap or if the exif or resize thing failed, just return the original stream
return uploadedFile.InputStream;
}
}
}
/// <summary>
/// Gets the file bytes.
/// </summary>
/// <param name="uploadedFile">The uploaded file.</param>
/// <param name="resizeIfImage">if set to <c>true</c> [resize if image].</param>
/// <returns></returns>
public static Stream GetFileContentStream( HttpPostedFile uploadedFile, bool resizeIfImage = true )
{
if ( uploadedFile.ContentType == "image/svg+xml" || uploadedFile.ContentType == "image/tiff" || !uploadedFile.ContentType.StartsWith( "image/" ) )
{
return uploadedFile.InputStream;
}
try
{
var bmp = new Bitmap( uploadedFile.InputStream );
// Check to see if we should flip the image.
var exif = new EXIFextractor( ref bmp, "\n" );
if ( exif["Orientation"] != null )
{
var flip = OrientationToFlipType( exif["Orientation"].ToString() );
// don't flip if orientation is correct
if ( flip != RotateFlipType.RotateNoneFlipNone )
{
bmp.RotateFlip( flip );
exif.setTag( 0x112, "1" ); // reset orientation tag
}
}
if ( resizeIfImage )
{
bmp = RoughResize( bmp, 1024, 768 );
}
var stream = new MemoryStream();
bmp.Save( stream, ContentTypeToImageFormat( uploadedFile.ContentType ) );
return stream;
}
catch
{
// if it couldn't be converted to a bitmap or if the exif or resize thing failed, just return the original stream
return uploadedFile.InputStream;
}
}
