Class TwinTextureCache

src/main/java/trace/video/TwinTextureCache.kt:7–234

import field.graphics.FastJPEG
import field.graphics.Texture

class TwinTextureCache(unit: Int, private val source: ImageCache) {


    private val a: ByteBuffer
    val textureA: Texture
    private val b: ByteBuffer
    val textureB: Texture

    internal var q = FastJPEG()

    internal var playing = false
    var isDirty = false
        internal set

    internal var time: Double = 0.toDouble()
    internal var lastTime = -100.0
    internal var alpha = 0.5

    internal var cA = -1
    internal var cB = -1

    var autoDirectionSet = false

    internal var LEFT = 0
    internal var RIGHT = 0

    init {

        a = ByteBuffer.allocateDirect(source.width * source.height * 3)
        b = ByteBuffer.allocateDirect(source.width * source.height * 3)

        textureA = Texture(Texture.TextureSpecification.byte3(unit, source.width, source.height, a, true, false))
        textureB = Texture(Texture.TextureSpecification.byte3(unit + 1, source.width, source.height, b, true, false))

        textureA.setIsDoubleBuffered(false)
        textureB.setIsDoubleBuffered(false)
    }

    fun getAlpha(): Float {
        return Math.max(0.0, Math.min(1.0, alpha)).toFloat()
    }

    fun setPlaying(p: Boolean) {
        if (p && !playing) {
            source.prerollAndWait(time.toInt())
        }
        this.playing = p
    }


    var lastBytes: ByteBuffer? = null

    fun setTime(t: Double) {

        if (t == lastTime)
            return
        if (t.toInt() == lastTime.toInt()) {