Package com.bumptech.glide.load.resource.bitmap

Class ExifInterfaceImageHeaderParser

java.lang.Object

com.bumptech.glide.load.resource.bitmap.ExifInterfaceImageHeaderParser

All Implemented Interfaces:

ImageHeaderParser

@RequiresApi(27)
public final class ExifInterfaceImageHeaderParser
extends Object
implements ImageHeaderParser

Uses ExifInterface to parse orientation data.

ExifInterface supports the HEIF format on OMR1+. Glide's DefaultImageHeaderParser doesn't currently support HEIF. In the future we should reconcile these two classes, but for now this is a simple way to ensure that HEIF files are oriented correctly on platforms where they're supported.

Nested Class Summary

Nested classes/interfaces inherited from interface com.bumptech.glide.load.ImageHeaderParser

ImageHeaderParser.ImageType

Field Summary

Fields inherited from interface com.bumptech.glide.load.ImageHeaderParser

UNKNOWN_ORIENTATION

Constructor Summary

Constructors

Constructor	Description
ExifInterfaceImageHeaderParser()

Method Summary

Modifier and Type	Method	Description
int	getOrientation(InputStream is, ArrayPool byteArrayPool)	Parse the orientation from the image header.
int	getOrientation(ByteBuffer byteBuffer, ArrayPool byteArrayPool)
ImageHeaderParser.ImageType	getType(InputStream is)
ImageHeaderParser.ImageType	getType(ByteBuffer byteBuffer)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

ExifInterfaceImageHeaderParser

public ExifInterfaceImageHeaderParser()

Method Details

getType

@NonNull
public ImageHeaderParser.ImageType getType(@NonNull
 InputStream is)

Specified by:

getType in interface ImageHeaderParser

getType

@NonNull
public ImageHeaderParser.ImageType getType(@NonNull
 ByteBuffer byteBuffer)

Specified by:

getType in interface ImageHeaderParser

getOrientation

public int getOrientation(@NonNull
 InputStream is,
 @NonNull
 ArrayPool byteArrayPool)
                   throws IOException

Description copied from interface: ImageHeaderParser

Parse the orientation from the image header. If it doesn't handle this image type (or this is not an image) it will return a default value rather than throwing an exception.

Specified by:

getOrientation in interface ImageHeaderParser

Returns:

The exif orientation if present or -1 if the header couldn't be parsed or doesn't contain an orientation

Throws:

IOException

getOrientation

public int getOrientation(@NonNull
 ByteBuffer byteBuffer,
 @NonNull
 ArrayPool byteArrayPool)
                   throws IOException

Specified by:

getOrientation in interface ImageHeaderParser

Throws:

IOException