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Updates to Brotli compression format, decoder and encoder

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This commit contains a batch of changes that were made to the Brotli
compression algorithm in the last month. Most important changes:

   * Format change: don't push distances representing static dictionary words to the distance cache.
   * Fix decoder invalid memory access bug caused by building a non-complete Huffman tree.
   * Add a mode parameter to the encoder interface.
   * Use different hashers for text and font mode.
   * Add a heuristics to the hasher for skipping non-compressible data.
   * Exhaustive search of static dictionary during backward reference search.
This commit is contained in:
Zoltan Szabadka
2014-03-20 14:32:35 +01:00
parent 7f848593bd
commit 278b89484f
14 changed files with 546 additions and 280 deletions
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brotli/enc/prefix.cc
+1 -1
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@@ -90,7 +90,7 @@ int CopyLengthPrefix(int length) {
int CommandPrefix(int insert_length, int copy_length) {
if (copy_length == 0) {
copy_length = 3;
copy_length = 4;
}
int insert_prefix = InsertLengthPrefix(insert_length);
int copy_prefix = CopyLengthPrefix(copy_length);