如何从原始数据创建BufferedImage

我试图从原始样本中获取一个BufferedImage,但是在试图读取超出可用数据范围的数据时出现异常,我只是不明白。我要做的是:

val datasize = image.width * image.height
val imgbytes = image.data.getIntArray(0, datasize)
val datamodel = new SinglePixelPackedSampleModel(DataBuffer.TYPE_INT, image.width, image.height, Array(image.red_mask.intValue, image.green_mask.intValue, image.blue_mask.intValue))
val buffer = datamodel.createDataBuffer
val raster = Raster.createRaster(datamodel, buffer, new Point(0,0))
datamodel.setPixels(0, 0, image.width, image.height, imgbytes, buffer)
val newimage = new BufferedImage(image.width, image.height, BufferedImage.TYPE_INT_RGB)
newimage.setData(raster)

不幸的是我得到:

Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: 32784
    at java.awt.image.SinglePixelPackedSampleModel.setPixels(SinglePixelPackedSampleModel.java:689)
    at screenplayer.Main$.ximage_to_swt(Main.scala:40)
    at screenplayer.Main$.main(Main.scala:31)
    at screenplayer.Main.main(Main.scala)

数据是标准的RGB,带有1字节的填充(因此1像素=4字节),图像大小为1366x24像素。

我终于得到了下面建议运行的代码。最终代码是:

val datasize = image.width * image.height
val imgbytes = image.data.getIntArray(0, datasize)

val raster = Raster.createPackedRaster(DataBuffer.TYPE_INT, image.width, image.height, 3, 8, null)
raster.setDataElements(0, 0, image.width, image.height, imgbytes)

val newimage = new BufferedImage(image.width, image.height, BufferedImage.TYPE_INT_RGB)
newimage.setData(raster)

如果可以改进的话,我当然愿意接受建议,但总的来说,它是按预期工作的。