diff options
Diffstat (limited to 'c/enc/histogram.c')
| -rw-r--r-- | c/enc/histogram.c | 15 |
1 files changed, 9 insertions, 6 deletions
diff --git a/c/enc/histogram.c b/c/enc/histogram.c index bb7b4c5..6da2ff6 100644 --- a/c/enc/histogram.c +++ b/c/enc/histogram.c @@ -8,9 +8,9 @@ #include "./histogram.h" +#include "../common/context.h" #include "./block_splitter.h" #include "./command.h" -#include "./context.h" #if defined(__cplusplus) || defined(c_plusplus) extern "C" { @@ -63,13 +63,16 @@ void BrotliBuildHistogramsWithContext( BlockSplitIteratorNext(&insert_and_copy_it); HistogramAddCommand(&insert_and_copy_histograms[insert_and_copy_it.type_], cmd->cmd_prefix_); + /* TODO: unwrap iterator blocks. */ for (j = cmd->insert_len_; j != 0; --j) { size_t context; BlockSplitIteratorNext(&literal_it); - context = context_modes ? - ((literal_it.type_ << BROTLI_LITERAL_CONTEXT_BITS) + - Context(prev_byte, prev_byte2, context_modes[literal_it.type_])) : - literal_it.type_; + context = literal_it.type_; + if (context_modes) { + ContextLut lut = BROTLI_CONTEXT_LUT(context_modes[context]); + context = (context << BROTLI_LITERAL_CONTEXT_BITS) + + BROTLI_CONTEXT(prev_byte, prev_byte2, lut); + } HistogramAddLiteral(&literal_histograms[context], ringbuffer[pos & mask]); prev_byte2 = prev_byte; @@ -86,7 +89,7 @@ void BrotliBuildHistogramsWithContext( context = (dist_it.type_ << BROTLI_DISTANCE_CONTEXT_BITS) + CommandDistanceContext(cmd); HistogramAddDistance(©_dist_histograms[context], - cmd->dist_prefix_); + cmd->dist_prefix_ & 0x3FF); } } } |