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Add options to brotli and implement clean brotli .br support

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- allow to specify brotli window size
  - parameter -m0=brotli:long=n, BROTLI_MAX_WINDOW_BITS (24) used by default in brotli-mt, smaller == faster
  - note that :long can be set up to BROTLI_LARGE_MAX_WINDOW_BITS (30), whereas :wlog can be set up to BROTLI_MAX_WINDOW_BITS (24) only...
  - todo: check whether set of BROTLI_PARAM_LARGE_WINDOW to BROTLI_TRUE is needed if (lgwin > BROTLI_MAX_WINDOW_BITS)

- implementation of single-threaded brotli compression / decompression for .br data

Signed-off-by: Sergey G. Brester <info@sebres.de>
Reviewed-by: Tino Reichardt <milky-7zip@mcmilk.de>
This commit is contained in:
sebres
2021-08-30 17:16:08 +02:00
committed by Tino Reichardt
parent 9bb11a56b6
commit eeae03eaa1
8 changed files with 660 additions and 40 deletions
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2
C/zstdmt/brotli-mt.h
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@@ -101,7 +101,7 @@ typedef struct BROTLIMT_CCtx_s BROTLIMT_CCtx;
* @inputsize - if zero, becomes some optimal value for the level
* - if nonzero, the given value is taken
*/
BROTLIMT_CCtx *BROTLIMT_createCCtx(int threads, int level, int inputsize);
BROTLIMT_CCtx *BROTLIMT_createCCtx(int threads, uint64_t unpackSize, int level, int inputsize, int lgwin);
/**
* 2) threaded compression