Method decompress

src/main/java/trace/video/ImageCache.kt:40–54

                if (n.key == "--black--") {
                    synchronized(black) {
                        black.rewind()
                        n.value.put(black)
                        black.rewind()
                        n.value.rewind()
                    }
                } else {
                    Thread.currentThread().name = "decompression thread"
                    System.err.println(n.key + " " + n.value)
//                    jp.decompress(n.key, n.value, width, height)
                    FastJPEG.j.decompress(n.key, n.value, width, height)
                }
            }

            override fun check(): Int {
                val z = super.check()
                if (z != num) {
                    // throw new
                    // IllegalArgumentException(" failed check");