CameraX support

[gordinmitya]

CameraX api has ImageProxy class which you obtain from ImageAnalyzer. It has the same api as usual Image. So adding support is just duplicating several constructors. And I would create pull request, but… The difficult part, I think, this feature should be in separate package. If someone don't use CameraX in his/her project won't have to download it.

[AlexanderMatveev]

Same issue.

Looking for ImageAnalyzer's ImageProxy.image to RGB conversion solution. Spent some days on this, still nothing..

[gordinmitya]

@AlexanderMatveev

just add two extra constructors

data class Yuv(
    val resource: AutoCloseable? = null,
    val width: Int,
    val height: Int,
    val y: Plane,
    val u: Plane,
    val v: Plane) : YuvPlanes, AutoCloseable {

    constructor(image: Image) : this(
        resource = image,
        width = image.width,
        height = image.height,
        y = Plane(image.planes[0]),
        u = Plane(image.planes[1]),
        v = Plane(image.planes[2])) {
        require(image.format == ImageFormat.YUV_420_888)
        require(image.width % 2 == 0)
        require(image.height % 2 == 0)
    }

    // here
    constructor(image: ImageProxy) : this(
        resource = image,
        width = image.width,
        height = image.height,
        y = Plane(image.planes[0]),
        u = Plane(image.planes[1]),
        v = Plane(image.planes[2])) {
        require(image.format == ImageFormat.YUV_420_888)
        require(image.width % 2 == 0)
        require(image.height % 2 == 0)
    }

    data class Plane(
        val buffer: ByteBuffer,
        val pixelStride: Int,
        val rowStride: Int) {

        constructor(plane: Image.Plane) : this(
            buffer = plane.buffer,
            pixelStride = plane.pixelStride,
            rowStride = plane.rowStride)

         // and here
        constructor(plane: ImageProxy.PlaneProxy) : this(
            buffer = plane.buffer,
            pixelStride = plane.pixelStride,
            rowStride = plane.rowStride)
    }

    override fun close() {
        resource?.close()
    }

    val rows = this.height
    val cols = this.width

    /**
     * For java API call site
     */
    companion object {
        @JvmStatic
        fun rgb(image: Image) = image.rgb()

        @JvmStatic
        fun rgb(image: ImageProxy) = image.rgb()
    }
}

[gordinmitya]

but implementation in this repo is not correct, look at #5