expose new parameter ZSTD_c_blockSplitter_level

lib/compress/zstd_compress.c

@@ -603,6 +603,11 @@ ZSTD_bounds ZSTD_cParam_getBounds(ZSTD_cParameter param)
         bounds.upperBound = (int)ZSTD_ps_disable;
         return bounds;
 
+    case ZSTD_c_blockSplitter_level:
+        bounds.lowerBound = 0;
+        bounds.upperBound = ZSTD_BLOCKSPLITTER_LEVEL_MAX;
+        return bounds;
+
     case ZSTD_c_useRowMatchFinder:
         bounds.lowerBound = (int)ZSTD_ps_auto;
         bounds.upperBound = (int)ZSTD_ps_disable;
@@ -669,6 +674,7 @@ static int ZSTD_isUpdateAuthorized(ZSTD_cParameter param)
     case ZSTD_c_minMatch:
     case ZSTD_c_targetLength:
     case ZSTD_c_strategy:
+    case ZSTD_c_blockSplitter_level:
         return 1;
 
     case ZSTD_c_format:
@@ -755,6 +761,7 @@ size_t ZSTD_CCtx_setParameter(ZSTD_CCtx* cctx, ZSTD_cParameter param, int value)
     case ZSTD_c_blockDelimiters:
     case ZSTD_c_validateSequences:
     case ZSTD_c_useBlockSplitter:
+    case ZSTD_c_blockSplitter_level:
     case ZSTD_c_useRowMatchFinder:
     case ZSTD_c_deterministicRefPrefix:
     case ZSTD_c_prefetchCDictTables:
@@ -980,6 +987,11 @@ size_t ZSTD_CCtxParams_setParameter(ZSTD_CCtx_params* CCtxParams,
         CCtxParams->postBlockSplitter = (ZSTD_paramSwitch_e)value;
         return CCtxParams->postBlockSplitter;
 
+    case ZSTD_c_blockSplitter_level:
+        BOUNDCHECK(ZSTD_c_blockSplitter_level, value);
+        CCtxParams->preBlockSplitter_level = value;
+        return (size_t)CCtxParams->preBlockSplitter_level;
+
     case ZSTD_c_useRowMatchFinder:
         BOUNDCHECK(ZSTD_c_useRowMatchFinder, value);
         CCtxParams->useRowMatchFinder = (ZSTD_paramSwitch_e)value;
@@ -1138,6 +1150,9 @@ size_t ZSTD_CCtxParams_getParameter(
     case ZSTD_c_useBlockSplitter :
         *value = (int)CCtxParams->postBlockSplitter;
         break;
+    case ZSTD_c_blockSplitter_level :
+        *value = CCtxParams->preBlockSplitter_level;
+        break;
     case ZSTD_c_useRowMatchFinder :
         *value = (int)CCtxParams->useRowMatchFinder;
         break;