HeifWriter

const val INPUT_MODE_BITMAP = 2: Int

The input mode where the client adds bitmaps.

const val INPUT_MODE_BUFFER = 0: Int

The input mode where the client adds input buffers with YUV data.

const val INPUT_MODE_SURFACE = 1: Int

The input mode where the client renders the images to an input Surface created by the writer. The input surface operates in single buffer mode. As a result, for use case where camera directly outputs to the input surface, this mode will not work because camera framework requires multiple buffers to operate in a pipeline fashion.

fun addBitmap(bitmap: Bitmap): Unit

Add one bitmap to the heif file.

fun addExifData(imageIndex: Int, exifData: ByteArray, offset: Int, length: Int): Unit

Add Exif data for the specified image. The data must be a valid Exif data block, starting with "Exif\0\0" followed by the TIFF header (See JEITA CP-3451C Section 4.5.2.)

fun addYuvBuffer(format: Int, data: ByteArray): Unit

Add one YUV buffer to the heif file.

fun getInputSurface(): Surface

Retrieves the input surface for encoding.

fun setInputEndOfStreamTimestamp(timestampNs: @IntRange(from = 0) Long): Unit

Set the timestamp (in nano seconds) of the last input frame to encode. This call is only valid for surface input. Client can use this to stop the heif writer earlier before the maximum number of images are written. If not called, the writer will only stop when the maximum number of images are written.

fun start(): Unit

Start the heif writer. Can only be called once.

fun stop(timeoutMs: @IntRange(from = 0) Long): Unit

Stop the heif writer synchronously. Throws exception if the writer didn't finish writing successfully. Upon a success return: - For buffer and bitmap inputs, all images sent before stop will be written. - For surface input, images with timestamp on or before that specified in setInputEndOfStreamTimestamp will be written. In case where setInputEndOfStreamTimestamp was never called, stop will block until maximum number of images are received.