diff options
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/lz4hc.c | 21 | ||||
| -rw-r--r-- | lib/lz4hc.h | 2 |
2 files changed, 21 insertions, 2 deletions
diff --git a/lib/lz4hc.c b/lib/lz4hc.c index fa2cbb7..9deb90d 100644 --- a/lib/lz4hc.c +++ b/lib/lz4hc.c @@ -716,11 +716,11 @@ static int LZ4HC_compress_generic ( int LZ4_sizeofStateHC(void) { return sizeof(LZ4_streamHC_t); } -int LZ4_compress_HC_extStateHC (void* state, const char* src, char* dst, int srcSize, int dstCapacity, int compressionLevel) +int LZ4_compress_HC_extStateHC_fastReset (void* state, const char* src, char* dst, int srcSize, int dstCapacity, int compressionLevel) { LZ4HC_CCtx_internal* const ctx = &((LZ4_streamHC_t*)state)->internal_donotuse; if (((size_t)(state)&(sizeof(void*)-1)) != 0) return 0; /* Error : state is not aligned for pointers (32 or 64 bits) */ - LZ4_resetStreamHC((LZ4_streamHC_t*)state, compressionLevel); + LZ4_resetStreamHC_fast((LZ4_streamHC_t*)state, compressionLevel); LZ4HC_init (ctx, (const BYTE*)src); if (dstCapacity < LZ4_compressBound(srcSize)) return LZ4HC_compress_generic (ctx, src, dst, &srcSize, dstCapacity, compressionLevel, limitedOutput); @@ -728,6 +728,13 @@ int LZ4_compress_HC_extStateHC (void* state, const char* src, char* dst, int src return LZ4HC_compress_generic (ctx, src, dst, &srcSize, dstCapacity, compressionLevel, noLimit); } +int LZ4_compress_HC_extStateHC (void* state, const char* src, char* dst, int srcSize, int dstCapacity, int compressionLevel) +{ + if (((size_t)(state)&(sizeof(void*)-1)) != 0) return 0; /* Error : state is not aligned for pointers (32 or 64 bits) */ + LZ4_resetStreamHC ((LZ4_streamHC_t*)state, compressionLevel); + return LZ4_compress_HC_extStateHC_fastReset(state, src, dst, srcSize, dstCapacity, compressionLevel); +} + int LZ4_compress_HC(const char* src, char* dst, int srcSize, int dstCapacity, int compressionLevel) { #if defined(LZ4HC_HEAPMODE) && LZ4HC_HEAPMODE==1 @@ -787,6 +794,16 @@ void LZ4_resetStreamHC (LZ4_streamHC_t* LZ4_streamHCPtr, int compressionLevel) LZ4_setCompressionLevel(LZ4_streamHCPtr, compressionLevel); } +void LZ4_resetStreamHC_fast (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 */ + DEBUGLOG(4, "LZ4_resetStreamHC_fast(%p, %d)", LZ4_streamHCPtr, compressionLevel); + LZ4_streamHCPtr->internal_donotuse.end -= (uptrval)LZ4_streamHCPtr->internal_donotuse.base; + LZ4_streamHCPtr->internal_donotuse.base = NULL; + LZ4_streamHCPtr->internal_donotuse.dictCtx = NULL; + LZ4_setCompressionLevel(LZ4_streamHCPtr, compressionLevel); +} + void LZ4_setCompressionLevel(LZ4_streamHC_t* LZ4_streamHCPtr, int compressionLevel) { if (compressionLevel < 1) compressionLevel = LZ4HC_CLEVEL_DEFAULT; diff --git a/lib/lz4hc.h b/lib/lz4hc.h index 1b08425..3b0d0d3 100644 --- a/lib/lz4hc.h +++ b/lib/lz4hc.h @@ -270,7 +270,9 @@ int LZ4_compress_HC_continue_destSize(LZ4_streamHC_t* LZ4_streamHCPtr, */ void LZ4_setCompressionLevel(LZ4_streamHC_t* LZ4_streamHCPtr, int compressionLevel); +void LZ4_resetStreamHC_fast(LZ4_streamHC_t* LZ4_streamHCPtr, int compressionLevel); +int LZ4_compress_HC_extStateHC_fastReset (void* state, const char* src, char* dst, int srcSize, int dstCapacity, int compressionLevel); #endif /* LZ4_HC_SLO_098092834 */ #endif /* LZ4_HC_STATIC_LINKING_ONLY */ |