diff options
Diffstat (limited to 'lib/lz4hc.c')
| -rw-r--r-- | lib/lz4hc.c | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/lib/lz4hc.c b/lib/lz4hc.c index 3097df2..8ca5442 100644 --- a/lib/lz4hc.c +++ b/lib/lz4hc.c @@ -486,6 +486,14 @@ _Search3: return (int) (((char*)op)-dest); } +static int LZ4HC_getSearchNum(int compressionLevel) +{ + switch (compressionLevel) { + default: return 0; /* unused */ + case 11: return 128; + case 12: return 1<<10; + } +} static int LZ4HC_compress_generic ( LZ4HC_CCtx_internal* const ctx, @@ -497,13 +505,14 @@ static int LZ4HC_compress_generic ( limitedOutput_directive limit ) { + // printf("LZ4HC_compress_generic inputSize=%d compressionLevel=%d\n", inputSize, compressionLevel); if (compressionLevel < 1) compressionLevel = LZ4HC_CLEVEL_DEFAULT; if (compressionLevel > 9) { switch (compressionLevel) { case 10: return LZ4HC_compress_hashChain(ctx, source, dest, inputSize, maxOutputSize, 1 << (16-1), limit); - case 11: ctx->searchNum = 128; return LZ4HC_compress_optimal(ctx, source, dest, inputSize, maxOutputSize, limit, 128, 0); + case 11: ctx->searchNum = LZ4HC_getSearchNum(compressionLevel); return LZ4HC_compress_optimal(ctx, source, dest, inputSize, maxOutputSize, limit, 128, 0); default: - case 12: ctx->searchNum = 1<<10; return LZ4HC_compress_optimal(ctx, source, dest, inputSize, maxOutputSize, limit, LZ4_OPT_NUM, 1); + case 12: ctx->searchNum = LZ4HC_getSearchNum(compressionLevel); return LZ4HC_compress_optimal(ctx, source, dest, inputSize, maxOutputSize, limit, LZ4_OPT_NUM, 1); } } return LZ4HC_compress_hashChain(ctx, source, dest, inputSize, maxOutputSize, 1 << (compressionLevel-1), limit); @@ -554,11 +563,13 @@ void LZ4_resetStreamHC (LZ4_streamHC_t* LZ4_streamHCPtr, int compressionLevel) LZ4_STATIC_ASSERT(sizeof(LZ4HC_CCtx_internal) <= sizeof(size_t) * LZ4_STREAMHCSIZE_SIZET); /* if compilation fails here, LZ4_STREAMHCSIZE must be increased */ LZ4_streamHCPtr->internal_donotuse.base = NULL; LZ4_streamHCPtr->internal_donotuse.compressionLevel = (unsigned)compressionLevel; + LZ4_streamHCPtr->internal_donotuse.searchNum = LZ4HC_getSearchNum(compressionLevel); } int LZ4_loadDictHC (LZ4_streamHC_t* LZ4_streamHCPtr, const char* dictionary, int dictSize) { LZ4HC_CCtx_internal* ctxPtr = &LZ4_streamHCPtr->internal_donotuse; + // printf("LZ4_loadDictHC dictSize=%d\n", (int)dictSize); if (dictSize > 64 KB) { dictionary += dictSize - 64 KB; dictSize = 64 KB; @@ -577,6 +588,7 @@ int LZ4_loadDictHC (LZ4_streamHC_t* LZ4_streamHCPtr, const char* dictionary, int static void LZ4HC_setExternalDict(LZ4HC_CCtx_internal* ctxPtr, const BYTE* newBlock) { + // printf("LZ4HC_setExternalDict\n"); if (ctxPtr->compressionLevel >= LZ4HC_CLEVEL_OPT_MIN) LZ4HC_updateBinTree(ctxPtr, ctxPtr->end - MFLIMIT, ctxPtr->end - LASTLITERALS); else |