using-multiple-camera-streams-05.kt

fun <T>getMaximumOutputSize(
        characteristics: CameraCharacteristics, targetClass: Class<T>, format: Int? = null):
        Size {
    val config = characteristics.get(
            CameraCharacteristics.SCALER_STREAM_CONFIGURATION_MAP)

    // If image format is provided, use it to determine supported sizes; else use target class
    val allSizes = if (format == null)
        config.getOutputSizes(targetClass) else config.getOutputSizes(format)
    return allSizes.sortedWith(compareBy { it.height * it.width }).reversed()[0]
}