Decoder 3-5x faster, encoder up to 3x, identical results - #39

Merged

paulmillr merged 37 commits into

paulmillr:mainfrom

Sep 21, 2026

Commits on Sep 18, 2026

encoder: keep matrix words in Int32Array
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0b19f27
encoder: roll the N3 window down each stripe
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2d1e1b7
encoder: mask predicates from a 72-entry table
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dbfc610
encoder: build only the shorter SVG move command
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85081b3
encoder: copy GIF spans with a byte loop
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decoder: create payload views on first use
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decoder: keep bitmap words in Int32Array
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5829702
decoder: walk finder runs straight off the packed row
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decoder: binarize eight pixels a row with word-wise compares
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decoder: convert luma and build the pyramid a word at a time
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decoder: settle intact blocks with the encoder's LFSR remainder
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dom: wait for a decoded frame before constructing a VideoFrame
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dom: skip frame capture while an async decode reads the arena
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dom: mute the player through the property as well
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decoder: walk vertical runs down the column without bit()
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decoder: leave cross() as soon as a run cannot pass ratio()
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decoder: test finder ratios on integer bounds
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decoder: keep the current bitmap word resident across finder runs
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decoder: sample the module grid without per-module calls
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decoder: walk codewords with packed column masks and whole-byte stores
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decoder: read payload fields through a three-byte window
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encoder: run the Reed-Solomon remainder four coefficients a word
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decoder: fold the Reed-Solomon remainder four coefficients at a time
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decoder: derive syndromes from the remainder register
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encoder: cache SVG path commands per output width
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encoder: emit four ASCII glyphs per concatenation
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encoder: copy GIF pixel rows whole, then spread them into LZW chunks
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056e097
encoder: validate numeric and alphanumeric text through the value table
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2e86b2a
encoder: fill raw rows from the packed words
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encoder: place data bits two at a time
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decoder: wipe each luma arena once in clean()
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decoder: slide the 5x5 threshold smoother along each block row
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80bc6c3
decoder: fold three-byte RGB input a word at a time
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decoder: grow finder records on demand
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decoder: size version scratch to the symbol actually attempted
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decoder: opt-in nativeLimit skips the full-resolution finder search
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changelog: note the decoder, encoder and DOM changes
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