def jpeg.components.allocate

gralha-jpeg-decode@0.1.0.1 · jpeg.bend:220

import Base
import gralha-bytes@0.1.0.1/bytes.bend as Bin

220def jpeg.components.allocate(xs: List<&2, JPEGComponent>, +cols: U32, +rows: U32) -> List<&2, JPEGComponent>:
221  match xs:
222    case Nil{}: Nil{}
223    case Con{JPEGComponent{id, h, v, quant, dc, ac, predictor, bw, bh, coefficients, samples}, rest}:
224      +hh = h
225      +vv = v
226      Con{JPEGComponent{id, hh, vv, quant, dc, ac, predictor, (cols * hh : U32), (rows * vv : U32), Bin.bytes.zero((cols * hh * rows * vv * 64 : U32)), Bin.bytes.zero(64)}, jpeg.components.allocate(rest, cols, rows)}