
public class JpegTranscoderUtils

Field Summary

Fields
Modifier and Type	Field	Description
`private final Integer`	`MIN_QUALITY`
`private final Integer`	`MAX_QUALITY`
`private final Integer`	`MIN_SCALE_NUMERATOR`
`private final Integer`	`MAX_SCALE_NUMERATOR`
`private final Integer`	`SCALE_DENOMINATOR`
`public final ImmutableList<Integer>`	`INVERTED_EXIF_ORIENTATIONS`
`private final Integer`	`DEFAULT_JPEG_QUALITY`
`public final static JpegTranscoderUtils`	`INSTANCE`

Method Summary

Modifier and Type	Method	Description
`final static Boolean`	`isRotationAngleAllowed(Integer degrees)`
`final static Boolean`	`isExifOrientationAllowed(Integer exifOrientation)`
`final static Integer`	`getSoftwareNumerator(RotationOptions rotationOptions, ResizeOptions resizeOptions, EncodedImage encodedImage, Boolean resizingEnabled)`
`final static Integer`	`getRotationAngle(RotationOptions rotationOptions, EncodedImage encodedImage)`
`final static Integer`	`getForceRotatedInvertedExifOrientation(RotationOptions rotationOptions, EncodedImage encodedImage)`	Get an inverted exif orientation (2, 4, 5, 7) but adjusted to take the force rotation angle into consideration
`final static Float`	`determineResizeRatio(ResizeOptions resizeOptions, Integer width, Integer height)`
`final static Integer`	`roundNumerator(Float maxRatio, Float roundUpFraction)`
`final static Integer`	`calculateDownsampleNumerator(Integer downsampleRatio)`	This method calculate the ratio in case the downsampling was enabled
`final static Matrix`	`getTransformationMatrix(EncodedImage encodedImage, RotationOptions rotationOptions)`	Compute the transformation matrix needed to rotate the image.
`final Integer`	`getMIN_QUALITY()`
`final Integer`	`getMAX_QUALITY()`
`final Integer`	`getMIN_SCALE_NUMERATOR()`
`final Integer`	`getMAX_SCALE_NUMERATOR()`
`final Integer`	`getSCALE_DENOMINATOR()`
`final ImmutableList<Integer>`	`getINVERTED_EXIF_ORIENTATIONS()`	Inverted EXIF orientations in clockwise rotation order.
`final Integer`	`getDEFAULT_JPEG_QUALITY()`

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

isRotationAngleAllowed

 final static Boolean isRotationAngleAllowed(Integer degrees)

isExifOrientationAllowed

 final static Boolean isExifOrientationAllowed(Integer exifOrientation)

getSoftwareNumerator

 final static Integer getSoftwareNumerator(RotationOptions rotationOptions, ResizeOptions resizeOptions, EncodedImage encodedImage, Boolean resizingEnabled)

getRotationAngle

 final static Integer getRotationAngle(RotationOptions rotationOptions, EncodedImage encodedImage)

getForceRotatedInvertedExifOrientation
```
 final static Integer getForceRotatedInvertedExifOrientation(RotationOptions rotationOptions, EncodedImage encodedImage)
```
Get an inverted exif orientation (2, 4, 5, 7) but adjusted to take the force rotation angle into consideration

determineResizeRatio

 final static Float determineResizeRatio(ResizeOptions resizeOptions, Integer width, Integer height)

roundNumerator

 final static Integer roundNumerator(Float maxRatio, Float roundUpFraction)

calculateDownsampleNumerator
```
 final static Integer calculateDownsampleNumerator(Integer downsampleRatio)
```
This method calculate the ratio in case the downsampling was enabled

Parameters:

downsampleRatio - The ratio from downsampling

getTransformationMatrix
```
 final static Matrix getTransformationMatrix(EncodedImage encodedImage, RotationOptions rotationOptions)
```
Compute the transformation matrix needed to rotate the image. If no transformation is needed, it returns null.

Parameters:

encodedImage - The EncodedImage used when computing the matrix.

rotationOptions - The RotationOptions used when computing the matrix

getMIN_QUALITY
```
 final Integer getMIN_QUALITY()
```

getMAX_QUALITY
```
 final Integer getMAX_QUALITY()
```

getMIN_SCALE_NUMERATOR
```
 final Integer getMIN_SCALE_NUMERATOR()
```

getMAX_SCALE_NUMERATOR
```
 final Integer getMAX_SCALE_NUMERATOR()
```

getSCALE_DENOMINATOR
```
 final Integer getSCALE_DENOMINATOR()
```

getINVERTED_EXIF_ORIENTATIONS
```
 final ImmutableList<Integer> getINVERTED_EXIF_ORIENTATIONS()
```
Inverted EXIF orientations in clockwise rotation order. Rotating 90 degrees clockwise gets you the next item in the list

getDEFAULT_JPEG_QUALITY

 final Integer getDEFAULT_JPEG_QUALITY()

Object JpegTranscoderUtils

Field Summary

Method Summary

Methods inherited from class java.lang.Object

Method Detail

isRotationAngleAllowed

isExifOrientationAllowed

getSoftwareNumerator

getRotationAngle

getForceRotatedInvertedExifOrientation

determineResizeRatio

roundNumerator

calculateDownsampleNumerator

getTransformationMatrix

getMIN_QUALITY

getMAX_QUALITY

getMIN_SCALE_NUMERATOR

getMAX_SCALE_NUMERATOR

getSCALE_DENOMINATOR

getINVERTED_EXIF_ORIENTATIONS

getDEFAULT_JPEG_QUALITY