fileio.c: support advanced compression parameters

programs/fileio.c

@@ -247,7 +247,8 @@ typedef struct {
     FILE* srcFile;
 } cRess_t;
 
-static cRess_t FIO_createCResources(const char* dictFileName, int cLevel, U64 srcSize)
+static cRess_t FIO_createCResources(const char* dictFileName, int cLevel, 
+                                    U64 srcSize, ZSTD_compressionParameters* comprParams)
 {
     cRess_t ress;
     memset(&ress, 0, sizeof(ress));
@@ -268,6 +269,13 @@ static cRess_t FIO_createCResources(const char* dictFileName, int cLevel, U64 sr
             params.fParams.contentSizeFlag = 1;
             params.fParams.checksumFlag = g_checksumFlag;
             params.fParams.noDictIDFlag = !g_dictIDFlag;
+            if (comprParams->windowLog) params.cParams.windowLog = comprParams->windowLog;
+            if (comprParams->chainLog) params.cParams.chainLog = comprParams->chainLog;
+            if (comprParams->hashLog) params.cParams.hashLog = comprParams->hashLog;
+            if (comprParams->searchLog) params.cParams.searchLog = comprParams->searchLog;
+            if (comprParams->searchLength) params.cParams.searchLength = comprParams->searchLength;
+            if (comprParams->targetLength) params.cParams.targetLength = comprParams->targetLength;
+            if (comprParams->strategy) params.cParams.strategy = comprParams->strategy;
             {   size_t const errorCode = ZSTD_initCStream_advanced(ress.cctx, dictBuffer, dictBuffSize, params, srcSize);
                 if (ZSTD_isError(errorCode)) EXM_THROW(33, "Error initializing CStream : %s", ZSTD_getErrorName(errorCode));
         }   }
@@ -401,12 +409,12 @@ static int FIO_compressFilename_dstFile(cRess_t ress,
 
 
 int FIO_compressFilename(const char* dstFileName, const char* srcFileName,
-                         const char* dictFileName, int compressionLevel)
+                         const char* dictFileName, int compressionLevel, ZSTD_compressionParameters* comprParams)
 {
     clock_t const start = clock();
     U64 const srcSize = UTIL_getFileSize(srcFileName);
 
-    cRess_t const ress = FIO_createCResources(dictFileName, compressionLevel, srcSize);
+    cRess_t const ress = FIO_createCResources(dictFileName, compressionLevel, srcSize, comprParams);
     int const result = FIO_compressFilename_dstFile(ress, dstFileName, srcFileName);
 
     double const seconds = (double)(clock() - start) / CLOCKS_PER_SEC;
@@ -419,14 +427,15 @@ int FIO_compressFilename(const char* dstFileName, const char* srcFileName,
 
 int FIO_compressMultipleFilenames(const char** inFileNamesTable, unsigned nbFiles,
                                   const char* suffix,
-                                  const char* dictFileName, int compressionLevel)
+                                  const char* dictFileName, int compressionLevel,
+                                  ZSTD_compressionParameters* comprParams)
 {
     int missed_files = 0;
     size_t dfnSize = FNSPACE;
     char*  dstFileName = (char*)malloc(FNSPACE);
     size_t const suffixSize = suffix ? strlen(suffix) : 0;
     U64 const srcSize = (nbFiles != 1) ? 0 : UTIL_getFileSize(inFileNamesTable[0]) ;
-    cRess_t ress = FIO_createCResources(dictFileName, compressionLevel, srcSize);
+    cRess_t ress = FIO_createCResources(dictFileName, compressionLevel, srcSize, comprParams);
 
     /* init */
     if (dstFileName==NULL) EXM_THROW(27, "FIO_compressMultipleFilenames : allocation error for dstFileName");

programs/fileio.h

@@ -11,6 +11,9 @@
 #ifndef FILEIO_H_23981798732
 #define FILEIO_H_23981798732
 
+#define ZSTD_STATIC_LINKING_ONLY   /* ZSTD_compressionParameters */
+#include "zstd.h"     /* ZSTD_compressionParameters */
+
 #if defined (__cplusplus)
 extern "C" {
 #endif
@@ -44,7 +47,8 @@ void FIO_setMemLimit(unsigned memLimit);
 ***************************************/
 /** FIO_compressFilename() :
     @return : 0 == ok;  1 == pb with src file. */
-int FIO_compressFilename (const char* outfilename, const char* infilename, const char* dictFileName, int compressionLevel);
+int FIO_compressFilename (const char* outfilename, const char* infilename, const char* dictFileName,
+                          int compressionLevel, ZSTD_compressionParameters* comprParams);
 
 /** FIO_decompressFilename() :
     @return : 0 == ok;  1 == pb with src file. */
@@ -58,7 +62,8 @@ int FIO_decompressFilename (const char* outfilename, const char* infilename, con
     @return : nb of missing files */
 int FIO_compressMultipleFilenames(const char** srcNamesTable, unsigned nbFiles,
                                   const char* suffix,
-                                  const char* dictFileName, int compressionLevel);
+                                  const char* dictFileName, int compressionLevel,
+                                  ZSTD_compressionParameters* comprParams);
 
 /** FIO_decompressMultipleFilenames() :
     @return : nb of missing or skipped files */

programs/zstdcli.c

@@ -569,9 +569,9 @@ int main(int argCount, const char* argv[])
     if (operation==zom_compress) {
 #ifndef ZSTD_NOCOMPRESS
         if ((filenameIdx==1) && outFileName)
-          operationResult = FIO_compressFilename(outFileName, filenameTable[0], dictFileName, cLevel);
+          operationResult = FIO_compressFilename(outFileName, filenameTable[0], dictFileName, cLevel, &compressionParams);
         else
-          operationResult = FIO_compressMultipleFilenames(filenameTable, filenameIdx, outFileName ? outFileName : ZSTD_EXTENSION, dictFileName, cLevel);
+          operationResult = FIO_compressMultipleFilenames(filenameTable, filenameIdx, outFileName ? outFileName : ZSTD_EXTENSION, dictFileName, cLevel, &compressionParams);
 #else
         DISPLAY("Compression not supported\n");
 #endif