def jpeg.progressive.dc.first
gralha-jpeg-decode@0.1.0.1 · jpeg.bend:256
import gralha-jpeg-decode@0.1.0.1/jpeg.bend as Jpeg
import Base
import gralha-text-scan@0.1.0.1/scan.bend as U
import gralha-bytes@0.1.0.1/bytes.bend as Bin
256def jpeg.progressive.dc.first(+read: JPEGRead, coefficients: Bin.Bytes, predictor: U32, offset: U32, low: U32) -> JPEGBlock:
257 JPEGRead{count, stream} = read
258 +n = count
259 +ok = U32.is_le(n, 11)
260 jpeg.progressive.dc.bits(jpeg.bits(U.choose(JPEGStream, ok, stream, jpeg.stream.invalid(stream)), U.choose(U32, ok, n, 0)), n, coefficients, predictor, offset, low)