DngCreator

MAX_THUMBNAIL_DIMENSION

static val MAX_THUMBNAIL_DIMENSION: Int

Max width or height dimension for thumbnails.

Value: 256

DngCreator

DngCreator(
    characteristics: CameraCharacteristics, 
    metadata: CaptureResult)

Create a new DNG object.

It is not necessary to call any set methods to write a well-formatted DNG file.

DNG metadata tags will be generated from the corresponding parameters in the android.hardware.camera2.CaptureResult object.

For best quality DNG files, it is strongly recommended that lens shading map output is enabled if supported. See CaptureRequest.STATISTICS_LENS_SHADING_MAP_MODE.

close

fun close(): Unit

Closes this resource, relinquishing any underlying resources. This method is invoked automatically on objects managed by the try-with-resources statement.

setDescription

fun setDescription(description: String): DngCreator

Set the user description string to write.

This is equivalent to setting the TIFF "ImageDescription" tag (0x010E).

setLocation

fun setLocation(location: Location): DngCreator

Set image location metadata.

The given location object must contain at least a valid time, latitude, and longitude (equivalent to the values returned by android.location.Location#getTime(), android.location.Location#getLatitude(), and android.location.Location#getLongitude() methods).

setOrientation

fun setOrientation(orientation: Int): DngCreator

Set the orientation value to write.

This will be written as the TIFF "Orientation" tag (0x0112). Calling this will override any prior settings for this tag.

setThumbnail

fun setThumbnail(pixels: Bitmap): DngCreator

Set the thumbnail image.

Pixel data will be converted to a Baseline TIFF RGB image, with 8 bits per color channel. The alpha channel will be discarded. Thumbnail images with a dimension larger than MAX_THUMBNAIL_DIMENSION will be rejected.

setThumbnail

fun setThumbnail(pixels: Image): DngCreator

Set the thumbnail image.

Pixel data is interpreted as a android.graphics.ImageFormat#YUV_420_888 image. Thumbnail images with a dimension larger than MAX_THUMBNAIL_DIMENSION will be rejected.

writeByteBuffer

fun writeByteBuffer(
    dngOutput: OutputStream, 
    size: Size, 
    pixels: ByteBuffer, 
    offset: Long
): Unit

Write the android.graphics.ImageFormat#RAW_SENSOR pixel data to a DNG file with the currently configured metadata.

Raw pixel data must have 16 bits per pixel, and the input must contain at least offset + 2 * width * height) bytes. The width and height of the input are taken from the width and height set in the DngCreator metadata tags, and will typically be equal to the width and height of CameraCharacteristics.SENSOR_INFO_PRE_CORRECTION_ACTIVE_ARRAY_SIZE. Prior to API level 23, this was always the same as CameraCharacteristics.SENSOR_INFO_ACTIVE_ARRAY_SIZE. The pixel layout in the input is determined from the reported color filter arrangement (CFA) set in CameraCharacteristics.SENSOR_INFO_COLOR_FILTER_ARRANGEMENT. If insufficient metadata is available to write a well-formatted DNG file, an java.lang.IllegalStateException will be thrown.

Any mark or limit set on this ByteBuffer is ignored, and will be cleared by this method.

writeImage

fun writeImage(
    dngOutput: OutputStream, 
    pixels: Image
): Unit

Write the pixel data to a DNG file with the currently configured metadata.

For this method to succeed, the android.media.Image input must contain android.graphics.ImageFormat#RAW_SENSOR pixel data, otherwise an java.lang.IllegalArgumentException will be thrown.

writeInputStream

fun writeInputStream(
    dngOutput: OutputStream, 
    size: Size, 
    pixels: InputStream, 
    offset: Long
): Unit

Write the android.graphics.ImageFormat#RAW_SENSOR pixel data to a DNG file with the currently configured metadata.

Raw pixel data must have 16 bits per pixel, and the input must contain at least offset + 2 * width * height) bytes. The width and height of the input are taken from the width and height set in the DngCreator metadata tags, and will typically be equal to the width and height of CameraCharacteristics.SENSOR_INFO_PRE_CORRECTION_ACTIVE_ARRAY_SIZE. Prior to API level 23, this was always the same as CameraCharacteristics.SENSOR_INFO_ACTIVE_ARRAY_SIZE. The pixel layout in the input is determined from the reported color filter arrangement (CFA) set in CameraCharacteristics.SENSOR_INFO_COLOR_FILTER_ARRANGEMENT. If insufficient metadata is available to write a well-formatted DNG file, an java.lang.IllegalStateException will be thrown.

finalize

protected fun finalize(): Unit

Called by the garbage collector on an object when garbage collection determines that there are no more references to the object. A subclass overrides the finalize method to dispose of system resources or to perform other cleanup.

The general contract of finalize is that it is invoked if and when the Java virtual machine has determined that there is no longer any means by which this object can be accessed by any thread that has not yet died, except as a result of an action taken by the finalization of some other object or class which is ready to be finalized. The finalize method may take any action, including making this object available again to other threads; the usual purpose of finalize, however, is to perform cleanup actions before the object is irrevocably discarded. For example, the finalize method for an object that represents an input/output connection might perform explicit I/O transactions to break the connection before the object is permanently discarded.

The finalize method of class Object performs no special action; it simply returns normally. Subclasses of Object may override this definition.

The Java programming language does not guarantee which thread will invoke the finalize method for any given object. It is guaranteed, however, that the thread that invokes finalize will not be holding any user-visible synchronization locks when finalize is invoked. If an uncaught exception is thrown by the finalize method, the exception is ignored and finalization of that object terminates.

After the finalize method has been invoked for an object, no further action is taken until the Java virtual machine has again determined that there is no longer any means by which this object can be accessed by any thread that has not yet died, including possible actions by other objects or classes which are ready to be finalized, at which point the object may be discarded.

The finalize method is never invoked more than once by a Java virtual machine for any given object.

Any exception thrown by the finalize method causes the finalization of this object to be halted, but is otherwise ignored.