com.bumptech.glide.load.resource.bitmap

Class ExifInterfaceImageHeaderParser

java.lang.Object

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

All Implemented Interfaces:

ImageHeaderParser

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 and Description
ExifInterfaceImageHeaderParser()

Method Summary

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

Methods inherited from class java.lang.Object

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

Constructor Detail

ExifInterfaceImageHeaderParser

public ExifInterfaceImageHeaderParser()

Method Detail

getType

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

Specified by:

getType in interface ImageHeaderParser

Throws:

IOException

getType

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

Specified by:

getType in interface ImageHeaderParser

Throws:

IOException

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