Let user specify iterations without improvement #21
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Thank you a bunch for this PR, your changes look interesting. Before I give it a closer review, I'd like to know if you were able to prove any of the hypotheses you suggested in #17? |
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No, I haven't. I'll have a lot of experimenting to do in the future. |
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…later (#530) * Add .whitesource configuration file * Experimental: allow Zopfli to use any size BufWriter * Allow user to specify the output buffer size as well * Allow user to specify maximum block splits * Reformat and fix warnings * Use deflater on iCCP chunk as well * Bug fix: need to implement Zlib format * Make functions const when possible * Switch to using zopfli::Options in prep for zopfli-rs/zopfli#21 * Switch to using zopfli::Options in prep for zopfli-rs/zopfli#21 * Cargo fmt * Fix compilation * Fix tests * Fix more lints * Fix more lints * Fix compilation more --------- Co-authored-by: mend-bolt-for-github[bot] <42819689+mend-bolt-for-github[bot]@users.noreply.github.com> Co-authored-by: Chris Hennick <[email protected]> Co-authored-by: Chris Hennick <[email protected]>
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…later (shssoichiro#530) * Add .whitesource configuration file * Experimental: allow Zopfli to use any size BufWriter * Allow user to specify the output buffer size as well * Allow user to specify maximum block splits * Reformat and fix warnings * Use deflater on iCCP chunk as well * Bug fix: need to implement Zlib format * Make functions const when possible * Switch to using zopfli::Options in prep for zopfli-rs/zopfli#21 * Switch to using zopfli::Options in prep for zopfli-rs/zopfli#21 * Cargo fmt * Fix compilation * Fix tests * Fix more lints * Fix more lints * Fix compilation more --------- Co-authored-by: mend-bolt-for-github[bot] <42819689+mend-bolt-for-github[bot]@users.noreply.github.com> Co-authored-by: Chris Hennick <[email protected]> Co-authored-by: Chris Hennick <[email protected]>
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This PR adds two enhancements for situations when small compression improvements are worth a lot of CPU time (including research purposes where a high chance of finding the absolute smallest possible file is desired).
It also skips the unused stats randomization during the final iteration. Dead-code elimination could not have done this, because calling a PRNG mutates its state.