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_codec_bench2.nx

buildroot/runtime/_hdl_build/_codec_bench2.nx

4294 B90 linesdepth 5pulls 8 transitivereach 0 importersview sourcekind benchtopic codec

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_codec_bench2.nx -- Nishi-PNG vs real PNG filter set, SAME entropy stage (our deflate), SAME corpus (no-wave, no external tool, no fabrication). For each frame, prefilter then deflate; PNG's set = {Sub,Up,Avg,Paeth} whole-image-best; Nishi = MED (JPEG-LS median predictor, NOT in PNG's set). Exceed iff MED+deflate < PNG-best+deflate. (Honest scope: whole-image filter not per-row; real PNG does per-row best so this is a slightly-weak PNG -- noted. Synthetic frames are LZ-friendly/unrepresentative; the real differentiator is photographic images.)

dependencies 3 imports · 0 importers

imports: nx_frame_codec.nxnx_deflate_fixed.nxnx_syscalls.nx

imported by: nobody (leaf or entry point)

call flow from main pre-order; caps 40 nodes / depth 6 declared; ↻ = already shown

structs

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consts

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functions

10	func bp(s: *u8) -> i64 { var n: i64=0; while s[n]!=(0 as u8){n=n+1} sys_write(1,s,n); return 0 } called by 2: bench_frame main calls 1: sys_write
11	func bn(v: i64) -> i64 { let b: u8=sys_mmap(28); var m: i64=v; var k: i64=0; let t: u8=sys_mmap(28); if m==0{t[0]=48;k=1}; while m>0{t[k]=(48+(m%10)) as u8;m=m/10;k=k+1}; var i: i64=0; while i<k{b[i]=t[k-1-i];i=i+1}; sys_write(1,b,k); return 0 } called by 2: bench_frame main calls 2: sys_mmap sys_write
12	func paeth(a: i64, b: i64, c: i64) -> i64 called by 1: apply_filter
21	func medpred(a: i64, b: i64, c: i64) -> i64 called by 1: apply_filter
29	func apply_filter(buf: u8, w: i64, h: i64, res: u8, mode: i64) -> i64 called by 1: bench_frame calls 2: paeth medpred
55	func bench_frame(label: u8, buf: u8, w: i64, h: i64, res: u8, dfo: u8) -> i64 called by 1: main calls 4: apply_filter dfl_encode bp bn
74	func main() -> i64 calls 10: sys_mmap fc_gen_gradient bench_frame fc_gen_checker fc_gen_edge fc_gen_extremes+4