bytedeco/javacv
Vedi su GitHubI'm passing a Frame to a BufferedImage to get a Array of each RGB channel - is there a more direct path?
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#2097 aperta il 14 set 2023
help wantedquestion
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Descrizione
I feel like I'm converting when I don't need to be, and that there is likely a much more direct path.
Input: A short lived org.bytedeco.javacv.Frame read from a FFmpegFrameGrabber.
Output: the image fully decoded and normalized in a very basic format of:
class DecodedImage(
internal val width: Int,
internal val height: Int,
private val red: IntArray = IntArray(width * height),
private val green: IntArray = IntArray(width * height),
private val blue: IntArray = IntArray(width * height),
)
Ints per channel per pixel are a lot, but I need them for some later summing.
Right now I'm using a Java2DFrameConverter to convert the Frame to a BufferedImage, then reading out pixels from the BufferedImage -> Raster -> dataBuffer.
That seems... excessive. Is there a more direct way of blowing out a Frame to a fully flattened DecodedImage? I poked around in the Java2DFrameConverter, and it handles a lot of image formats.