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diff --git a/deps/libchdr/deps/zstd-1.5.5/tests/fullbench.c b/deps/libchdr/deps/zstd-1.5.5/tests/fullbench.c
new file mode 100644
index 00000000..41bd26d0
--- /dev/null
+++ b/deps/libchdr/deps/zstd-1.5.5/tests/fullbench.c
@@ -0,0 +1,968 @@
+/*
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ * All rights reserved.
+ *
+ * This source code is licensed under both the BSD-style license (found in the
+ * LICENSE file in the root directory of this source tree) and the GPLv2 (found
+ * in the COPYING file in the root directory of this source tree).
+ * You may select, at your option, one of the above-listed licenses.
+ */
+
+
+/*_************************************
+*  Includes
+**************************************/
+#define ZSTD_DISABLE_DEPRECATE_WARNINGS /* No deprecation warnings, we still bench some deprecated functions */
+#include "util.h"        /* Compiler options, UTIL_GetFileSize */
+#include <stdlib.h>      /* malloc */
+#include <stdio.h>       /* fprintf, fopen, ftello64 */
+#include <assert.h>
+
+#include "timefn.h"      /* UTIL_clockSpanNano, UTIL_getTime */
+#include "mem.h"         /* U32 */
+#ifndef ZSTD_DLL_IMPORT
+    #include "zstd_internal.h"   /* ZSTD_decodeSeqHeaders, ZSTD_blockHeaderSize, ZSTD_getcBlockSize, blockType_e, KB, MB */
+    #include "decompress/zstd_decompress_internal.h"   /* ZSTD_DCtx struct */
+#else
+    #define KB *(1 <<10)
+    #define MB *(1 <<20)
+    #define GB *(1U<<30)
+    typedef enum { bt_raw, bt_rle, bt_compressed, bt_reserved } blockType_e;
+#endif
+#define ZSTD_STATIC_LINKING_ONLY  /* ZSTD_compressBegin, ZSTD_compressContinue, etc. */
+#include "zstd.h"        /* ZSTD_versionString */
+#include "util.h"        /* time functions */
+#include "datagen.h"
+#include "benchfn.h"     /* CustomBench */
+#include "benchzstd.h"   /* MB_UNIT */
+
+
+/*_************************************
+*  Constants
+**************************************/
+#define PROGRAM_DESCRIPTION "Zstandard speed analyzer"
+#define AUTHOR "Yann Collet"
+#define WELCOME_MESSAGE "*** %s %s %i-bits, by %s (%s) ***\n", PROGRAM_DESCRIPTION, ZSTD_versionString(), (int)(sizeof(void*)*8), AUTHOR, __DATE__
+
+#define NBLOOPS    6
+#define TIMELOOP_S 2
+
+#define MAX_MEM    (1984 MB)
+
+#define DEFAULT_CLEVEL 1
+
+#define COMPRESSIBILITY_DEFAULT 0.50
+static const size_t kSampleSizeDefault = 10000000;
+
+#define TIMELOOP_NANOSEC      (1*1000000000ULL) /* 1 second */
+
+
+/*_************************************
+*  Macros
+**************************************/
+#define DISPLAY(...)  fprintf(stderr, __VA_ARGS__)
+
+#define CONTROL(c)  { if (!(c)) { abort(); } }   /* like assert(), but cannot be disabled */
+
+/*_************************************
+*  Benchmark Parameters
+**************************************/
+static unsigned g_nbIterations = NBLOOPS;
+
+
+/*_*******************************************************
+*  Private functions
+*********************************************************/
+static size_t BMK_findMaxMem(U64 requiredMem)
+{
+    size_t const step = 64 MB;
+    void* testmem = NULL;
+
+    requiredMem = (((requiredMem >> 26) + 1) << 26);
+    if (requiredMem > MAX_MEM) requiredMem = MAX_MEM;
+
+    requiredMem += step;
+    do {
+        testmem = malloc ((size_t)requiredMem);
+        requiredMem -= step;
+    } while (!testmem);
+
+    free (testmem);
+    return (size_t) requiredMem;
+}
+
+
+/*_*******************************************************
+*  Benchmark wrappers
+*********************************************************/
+
+static ZSTD_CCtx* g_zcc = NULL;
+
+static size_t
+local_ZSTD_compress(const void* src, size_t srcSize,
+                    void* dst, size_t dstSize,
+                    void* payload)
+{
+    ZSTD_parameters p;
+    ZSTD_frameParameters f = { 1 /* contentSizeHeader*/, 0, 0 };
+    p.fParams = f;
+    p.cParams = *(ZSTD_compressionParameters*)payload;
+    return ZSTD_compress_advanced (g_zcc, dst, dstSize, src, srcSize, NULL ,0, p);
+}
+
+static size_t
+local_ZSTD_compress_freshCCtx(const void* src, size_t srcSize,
+                    void* dst, size_t dstSize,
+                    void* payload)
+{
+    ZSTD_parameters p;
+    ZSTD_frameParameters f = { 1 /* contentSizeHeader*/, 0, 0 };
+    p.fParams = f;
+    p.cParams = *(ZSTD_compressionParameters*)payload;
+    if (g_zcc != NULL) ZSTD_freeCCtx(g_zcc);
+    g_zcc = ZSTD_createCCtx();
+    assert(g_zcc != NULL);
+    {   size_t const r = ZSTD_compress_advanced (g_zcc, dst, dstSize, src, srcSize, NULL ,0, p);
+        ZSTD_freeCCtx(g_zcc);
+        g_zcc = NULL;
+        return r;
+    }
+}
+
+static size_t g_cSize = 0;
+static size_t local_ZSTD_decompress(const void* src, size_t srcSize,
+                                    void* dst, size_t dstSize,
+                                    void* buff2)
+{
+    (void)src; (void)srcSize;
+    return ZSTD_decompress(dst, dstSize, buff2, g_cSize);
+}
+
+static ZSTD_DCtx* g_zdc = NULL;
+
+#ifndef ZSTD_DLL_IMPORT
+typedef enum {
+    not_streaming = 0,
+    is_streaming = 1
+} streaming_operation;
+extern size_t ZSTD_decodeLiteralsBlock(ZSTD_DCtx* ctx, const void* src, size_t srcSize, void* dst, size_t dstCapacity, const streaming_operation streaming);
+static size_t local_ZSTD_decodeLiteralsBlock(const void* src, size_t srcSize, void* dst, size_t dstSize, void* buff2)
+{
+    (void)src; (void)srcSize; (void)dst; (void)dstSize;
+    return ZSTD_decodeLiteralsBlock(g_zdc, buff2, g_cSize, dst, dstSize, not_streaming);
+}
+
+static size_t local_ZSTD_decodeSeqHeaders(const void* src, size_t srcSize, void* dst, size_t dstSize, void* buff2)
+{
+    int nbSeq;
+    (void)src; (void)srcSize; (void)dst; (void)dstSize;
+    return ZSTD_decodeSeqHeaders(g_zdc, &nbSeq, buff2, g_cSize);
+}
+
+FORCE_NOINLINE size_t ZSTD_decodeLiteralsHeader(ZSTD_DCtx* dctx, void const* src, size_t srcSize)
+{
+    RETURN_ERROR_IF(srcSize < MIN_CBLOCK_SIZE, corruption_detected, "");
+    {
+        BYTE const* istart = (BYTE const*)src;
+        symbolEncodingType_e const litEncType = (symbolEncodingType_e)(istart[0] & 3);
+        if (litEncType == set_compressed) {
+            RETURN_ERROR_IF(srcSize < 5, corruption_detected, "srcSize >= MIN_CBLOCK_SIZE == 3; here we need up to 5 for case 3");
+            {
+                size_t lhSize, litSize, litCSize;
+                U32 const lhlCode = (istart[0] >> 2) & 3;
+                U32 const lhc = MEM_readLE32(istart);
+                int const flags = ZSTD_DCtx_get_bmi2(dctx) ? HUF_flags_bmi2 : 0;
+                switch(lhlCode)
+                {
+                case 0: case 1: default:   /* note : default is impossible, since lhlCode into [0..3] */
+                    /* 2 - 2 - 10 - 10 */
+                    lhSize = 3;
+                    litSize  = (lhc >> 4) & 0x3FF;
+                    litCSize = (lhc >> 14) & 0x3FF;
+                    break;
+                case 2:
+                    /* 2 - 2 - 14 - 14 */
+                    lhSize = 4;
+                    litSize  = (lhc >> 4) & 0x3FFF;
+                    litCSize = lhc >> 18;
+                    break;
+                case 3:
+                    /* 2 - 2 - 18 - 18 */
+                    lhSize = 5;
+                    litSize  = (lhc >> 4) & 0x3FFFF;
+                    litCSize = (lhc >> 22) + ((size_t)istart[4] << 10);
+                    break;
+                }
+                RETURN_ERROR_IF(litSize > ZSTD_BLOCKSIZE_MAX, corruption_detected, "");
+                RETURN_ERROR_IF(litCSize + lhSize > srcSize, corruption_detected, "");
+#ifndef HUF_FORCE_DECOMPRESS_X2
+                return HUF_readDTableX1_wksp(
+                        dctx->entropy.hufTable,
+                        istart+lhSize, litCSize,
+                        dctx->workspace, sizeof(dctx->workspace),
+                        flags);
+#else
+                return HUF_readDTableX2_wksp(
+                        dctx->entropy.hufTable,
+                        istart+lhSize, litCSize,
+                        dctx->workspace, sizeof(dctx->workspace), flags);
+#endif
+            }
+        }
+    }
+    return 0;
+}
+
+static size_t local_ZSTD_decodeLiteralsHeader(const void* src, size_t srcSize, void* dst, size_t dstSize, void* buff2)
+{
+    (void)dst, (void)dstSize, (void)src, (void)srcSize;
+    return ZSTD_decodeLiteralsHeader(g_zdc, buff2, g_cSize);
+}
+#endif
+
+static ZSTD_CStream* g_cstream= NULL;
+static size_t
+local_ZSTD_compressStream(const void* src, size_t srcSize,
+                          void* dst, size_t dstCapacity,
+                          void* payload)
+{
+    ZSTD_outBuffer buffOut;
+    ZSTD_inBuffer buffIn;
+    ZSTD_parameters p;
+    ZSTD_frameParameters f = {1 /* contentSizeHeader*/, 0, 0};
+    p.fParams = f;
+    p.cParams = *(ZSTD_compressionParameters*)payload;
+    ZSTD_initCStream_advanced(g_cstream, NULL, 0, p, ZSTD_CONTENTSIZE_UNKNOWN);
+    buffOut.dst = dst;
+    buffOut.size = dstCapacity;
+    buffOut.pos = 0;
+    buffIn.src = src;
+    buffIn.size = srcSize;
+    buffIn.pos = 0;
+    ZSTD_compressStream(g_cstream, &buffOut, &buffIn);
+    ZSTD_endStream(g_cstream, &buffOut);
+    return buffOut.pos;
+}
+
+static size_t
+local_ZSTD_compressStream_freshCCtx(const void* src, size_t srcSize,
+                          void* dst, size_t dstCapacity,
+                          void* payload)
+{
+    if (g_cstream != NULL) ZSTD_freeCCtx(g_cstream);
+    g_cstream = ZSTD_createCCtx();
+    assert(g_cstream != NULL);
+
+    {   size_t const r = local_ZSTD_compressStream(src, srcSize, dst, dstCapacity, payload);
+        ZSTD_freeCCtx(g_cstream);
+        g_cstream = NULL;
+        return r;
+    }
+}
+
+static size_t
+local_ZSTD_compress2(const void* src, size_t srcSize,
+                           void* dst, size_t dstCapacity,
+                           void* payload)
+{
+    (void)payload;
+    return ZSTD_compress2(g_cstream, dst, dstCapacity, src, srcSize);
+}
+
+static size_t
+local_ZSTD_compressStream2_end(const void* src, size_t srcSize,
+    void* dst, size_t dstCapacity,
+    void* payload)
+{
+    ZSTD_outBuffer buffOut;
+    ZSTD_inBuffer buffIn;
+    (void)payload;
+    buffOut.dst = dst;
+    buffOut.size = dstCapacity;
+    buffOut.pos = 0;
+    buffIn.src = src;
+    buffIn.size = srcSize;
+    buffIn.pos = 0;
+    ZSTD_compressStream2(g_cstream, &buffOut, &buffIn, ZSTD_e_end);
+    return buffOut.pos;
+}
+
+static size_t
+local_ZSTD_compressStream2_continue(const void* src, size_t srcSize,
+                                 void* dst, size_t dstCapacity,
+                                 void* payload)
+{
+    ZSTD_outBuffer buffOut;
+    ZSTD_inBuffer buffIn;
+    (void)payload;
+    buffOut.dst = dst;
+    buffOut.size = dstCapacity;
+    buffOut.pos = 0;
+    buffIn.src = src;
+    buffIn.size = srcSize;
+    buffIn.pos = 0;
+    ZSTD_compressStream2(g_cstream, &buffOut, &buffIn, ZSTD_e_continue);
+    ZSTD_compressStream2(g_cstream, &buffOut, &buffIn, ZSTD_e_end);
+    return buffOut.pos;
+}
+
+static size_t
+local_ZSTD_compress_generic_T2_end(const void* src, size_t srcSize,
+                                   void* dst, size_t dstCapacity,
+                                   void* payload)
+{
+    (void)payload;
+    ZSTD_CCtx_setParameter(g_cstream, ZSTD_c_nbWorkers, 2);
+    return ZSTD_compress2(g_cstream, dst, dstCapacity, src, srcSize);
+}
+
+static size_t
+local_ZSTD_compress_generic_T2_continue(const void* src, size_t srcSize,
+                                        void* dst, size_t dstCapacity,
+                                        void* payload)
+{
+    ZSTD_outBuffer buffOut;
+    ZSTD_inBuffer buffIn;
+    (void)payload;
+    ZSTD_CCtx_setParameter(g_cstream, ZSTD_c_nbWorkers, 2);
+    buffOut.dst = dst;
+    buffOut.size = dstCapacity;
+    buffOut.pos = 0;
+    buffIn.src = src;
+    buffIn.size = srcSize;
+    buffIn.pos = 0;
+    ZSTD_compressStream2(g_cstream, &buffOut, &buffIn, ZSTD_e_continue);
+    while(ZSTD_compressStream2(g_cstream, &buffOut, &buffIn, ZSTD_e_end)) {}
+    return buffOut.pos;
+}
+
+static ZSTD_DStream* g_dstream= NULL;
+static size_t
+local_ZSTD_decompressStream(const void* src, size_t srcSize,
+                            void* dst, size_t dstCapacity,
+                            void* buff2)
+{
+    ZSTD_outBuffer buffOut;
+    ZSTD_inBuffer buffIn;
+    (void)src; (void)srcSize;
+    ZSTD_initDStream(g_dstream);
+    buffOut.dst = dst;
+    buffOut.size = dstCapacity;
+    buffOut.pos = 0;
+    buffIn.src = buff2;
+    buffIn.size = g_cSize;
+    buffIn.pos = 0;
+    ZSTD_decompressStream(g_dstream, &buffOut, &buffIn);
+    return buffOut.pos;
+}
+
+#ifndef ZSTD_DLL_IMPORT
+static size_t local_ZSTD_compressContinue(const void* src, size_t srcSize,
+                                          void* dst, size_t dstCapacity,
+                                          void* payload)
+{
+    ZSTD_parameters p;
+    ZSTD_frameParameters f = { 1 /* contentSizeHeader*/, 0, 0 };
+    p.fParams = f;
+    p.cParams = *(ZSTD_compressionParameters*)payload;
+    ZSTD_compressBegin_advanced(g_zcc, NULL, 0, p, srcSize);
+    return ZSTD_compressEnd(g_zcc, dst, dstCapacity, src, srcSize);
+}
+
+#define FIRST_BLOCK_SIZE 8
+static size_t
+local_ZSTD_compressContinue_extDict(const void* src, size_t srcSize,
+                                    void* dst, size_t dstCapacity,
+                                    void* payload)
+{
+    BYTE firstBlockBuf[FIRST_BLOCK_SIZE];
+
+    ZSTD_parameters p;
+    ZSTD_frameParameters const f = { 1, 0, 0 };
+    p.fParams = f;
+    p.cParams = *(ZSTD_compressionParameters*)payload;
+    ZSTD_compressBegin_advanced(g_zcc, NULL, 0, p, srcSize);
+    memcpy(firstBlockBuf, src, FIRST_BLOCK_SIZE);
+
+    {   size_t const compressResult = ZSTD_compressContinue(g_zcc,
+                                            dst, dstCapacity,
+                                            firstBlockBuf, FIRST_BLOCK_SIZE);
+        if (ZSTD_isError(compressResult)) {
+            DISPLAY("local_ZSTD_compressContinue_extDict error : %s\n",
+                    ZSTD_getErrorName(compressResult));
+            return compressResult;
+        }
+        dst = (BYTE*)dst + compressResult;
+        dstCapacity -= compressResult;
+    }
+    return ZSTD_compressEnd(g_zcc, dst, dstCapacity,
+                            (const BYTE*)src + FIRST_BLOCK_SIZE,
+                            srcSize - FIRST_BLOCK_SIZE);
+}
+
+static size_t local_ZSTD_decompressContinue(const void* src, size_t srcSize,
+                                            void* dst, size_t dstCapacity,
+                                            void* buff2)
+{
+    size_t regeneratedSize = 0;
+    const BYTE* ip = (const BYTE*)buff2;
+    const BYTE* const iend = ip + g_cSize;
+    BYTE* op = (BYTE*)dst;
+    size_t remainingCapacity = dstCapacity;
+
+    (void)src; (void)srcSize;  /* unused */
+    ZSTD_decompressBegin(g_zdc);
+    while (ip < iend) {
+        size_t const iSize = ZSTD_nextSrcSizeToDecompress(g_zdc);
+        size_t const decodedSize = ZSTD_decompressContinue(g_zdc, op, remainingCapacity, ip, iSize);
+        ip += iSize;
+        regeneratedSize += decodedSize;
+        op += decodedSize;
+        remainingCapacity -= decodedSize;
+    }
+
+    return regeneratedSize;
+}
+#endif
+
+
+/*_*******************************************************
+*  Bench functions
+*********************************************************/
+static int benchMem(unsigned benchNb,
+                    const void* src, size_t srcSize,
+                    int cLevel, ZSTD_compressionParameters cparams)
+{
+    size_t dstBuffSize = ZSTD_compressBound(srcSize);
+    BYTE*  dstBuff;
+    void*  dstBuff2;
+    void*  payload;
+    const char* benchName;
+    BMK_benchFn_t benchFunction;
+    int errorcode = 0;
+
+    /* Selection */
+    switch(benchNb)
+    {
+    case 1:
+        benchFunction = local_ZSTD_compress; benchName = "compress";
+        break;
+    case 2:
+        benchFunction = local_ZSTD_decompress; benchName = "decompress";
+        break;
+    case 3:
+        benchFunction = local_ZSTD_compress_freshCCtx; benchName = "compress_freshCCtx";
+        break;
+#ifndef ZSTD_DLL_IMPORT
+    case 11:
+        benchFunction = local_ZSTD_compressContinue; benchName = "compressContinue";
+        break;
+    case 12:
+        benchFunction = local_ZSTD_compressContinue_extDict; benchName = "compressContinue_extDict";
+        break;
+    case 13:
+        benchFunction = local_ZSTD_decompressContinue; benchName = "decompressContinue";
+        break;
+    case 30:
+        benchFunction = local_ZSTD_decodeLiteralsHeader; benchName = "decodeLiteralsHeader";
+        break;
+    case 31:
+        benchFunction = local_ZSTD_decodeLiteralsBlock; benchName = "decodeLiteralsBlock";
+        break;
+    case 32:
+        benchFunction = local_ZSTD_decodeSeqHeaders; benchName = "decodeSeqHeaders";
+        break;
+#endif
+    case 41:
+        benchFunction = local_ZSTD_compressStream; benchName = "compressStream";
+        break;
+    case 42:
+        benchFunction = local_ZSTD_decompressStream; benchName = "decompressStream";
+        break;
+    case 43:
+        benchFunction = local_ZSTD_compressStream_freshCCtx; benchName = "compressStream_freshCCtx";
+        break;
+    case 50:
+        benchFunction = local_ZSTD_compress2; benchName = "compress2";
+        break;
+    case 51:
+        benchFunction = local_ZSTD_compressStream2_end; benchName = "compressStream2, end";
+        break;
+    case 52:
+        benchFunction = local_ZSTD_compressStream2_end; benchName = "compressStream2, end & short";
+        break;
+    case 53:
+        benchFunction = local_ZSTD_compressStream2_continue; benchName = "compressStream2, continue";
+        break;
+    case 61:
+        benchFunction = local_ZSTD_compress_generic_T2_continue; benchName = "compress_generic, -T2, continue";
+        break;
+    case 62:
+        benchFunction = local_ZSTD_compress_generic_T2_end; benchName = "compress_generic, -T2, end";
+        break;
+    default :
+        return 0;
+    }
+
+    /* Allocation */
+    dstBuff = (BYTE*)malloc(dstBuffSize);
+    dstBuff2 = malloc(dstBuffSize);
+    if ((!dstBuff) || (!dstBuff2)) {
+        DISPLAY("\nError: not enough memory!\n");
+        free(dstBuff); free(dstBuff2);
+        return 12;
+    }
+    payload = dstBuff2;
+    if (g_zcc==NULL) g_zcc = ZSTD_createCCtx();
+    if (g_zdc==NULL) g_zdc = ZSTD_createDCtx();
+    if (g_cstream==NULL) g_cstream = ZSTD_createCStream();
+    if (g_dstream==NULL) g_dstream = ZSTD_createDStream();
+
+    /* DISPLAY("params: cLevel %d, wlog %d hlog %d clog %d slog %d mml %d tlen %d strat %d \n",
+          cLevel, cparams->windowLog, cparams->hashLog, cparams->chainLog, cparams->searchLog,
+          cparams->minMatch, cparams->targetLength, cparams->strategy); */
+
+    ZSTD_CCtx_setParameter(g_zcc, ZSTD_c_compressionLevel, cLevel);
+    ZSTD_CCtx_setParameter(g_zcc, ZSTD_c_windowLog, (int)cparams.windowLog);
+    ZSTD_CCtx_setParameter(g_zcc, ZSTD_c_hashLog, (int)cparams.hashLog);
+    ZSTD_CCtx_setParameter(g_zcc, ZSTD_c_chainLog, (int)cparams.chainLog);
+    ZSTD_CCtx_setParameter(g_zcc, ZSTD_c_searchLog, (int)cparams.searchLog);
+    ZSTD_CCtx_setParameter(g_zcc, ZSTD_c_minMatch, (int)cparams.minMatch);
+    ZSTD_CCtx_setParameter(g_zcc, ZSTD_c_targetLength, (int)cparams.targetLength);
+    ZSTD_CCtx_setParameter(g_zcc, ZSTD_c_strategy, cparams.strategy);
+
+    ZSTD_CCtx_setParameter(g_cstream, ZSTD_c_compressionLevel, cLevel);
+    ZSTD_CCtx_setParameter(g_cstream, ZSTD_c_windowLog, (int)cparams.windowLog);
+    ZSTD_CCtx_setParameter(g_cstream, ZSTD_c_hashLog, (int)cparams.hashLog);
+    ZSTD_CCtx_setParameter(g_cstream, ZSTD_c_chainLog, (int)cparams.chainLog);
+    ZSTD_CCtx_setParameter(g_cstream, ZSTD_c_searchLog, (int)cparams.searchLog);
+    ZSTD_CCtx_setParameter(g_cstream, ZSTD_c_minMatch, (int)cparams.minMatch);
+    ZSTD_CCtx_setParameter(g_cstream, ZSTD_c_targetLength, (int)cparams.targetLength);
+    ZSTD_CCtx_setParameter(g_cstream, ZSTD_c_strategy, cparams.strategy);
+
+    /* Preparation */
+    switch(benchNb)
+    {
+    case 1:
+        payload = &cparams;
+        break;
+    case 2:
+        g_cSize = ZSTD_compress(dstBuff2, dstBuffSize, src, srcSize, cLevel);
+        break;
+    case 3:
+        payload = &cparams;
+        break;
+#ifndef ZSTD_DLL_IMPORT
+    case 11:
+        payload = &cparams;
+        break;
+    case 12:
+        payload = &cparams;
+        break;
+    case 13 :
+        g_cSize = ZSTD_compress(dstBuff2, dstBuffSize, src, srcSize, cLevel);
+        break;
+    case 30:  /* ZSTD_decodeLiteralsHeader */
+        /* fall-through */
+    case 31:  /* ZSTD_decodeLiteralsBlock : starts literals block in dstBuff2 */
+        {   size_t frameHeaderSize;
+            g_cSize = ZSTD_compress(dstBuff, dstBuffSize, src, srcSize, cLevel);
+            frameHeaderSize = ZSTD_frameHeaderSize(dstBuff, ZSTD_FRAMEHEADERSIZE_PREFIX(ZSTD_f_zstd1));
+            CONTROL(!ZSTD_isError(frameHeaderSize));
+            /* check block is compressible, hence contains a literals section */
+            {   blockProperties_t bp;
+                ZSTD_getcBlockSize(dstBuff+frameHeaderSize, dstBuffSize, &bp);  /* Get 1st block type */
+                if (bp.blockType != bt_compressed) {
+                    DISPLAY("ZSTD_decodeLiteralsBlock : impossible to test on this sample (not compressible)\n");
+                    goto _cleanOut;
+            }   }
+            {   size_t const skippedSize = frameHeaderSize + ZSTD_blockHeaderSize;
+                memcpy(dstBuff2, dstBuff+skippedSize, g_cSize-skippedSize);
+            }
+            srcSize = srcSize > 128 KB ? 128 KB : srcSize;    /* speed relative to block */
+            ZSTD_decompressBegin(g_zdc);
+            break;
+        }
+    case 32:   /* ZSTD_decodeSeqHeaders */
+        {   blockProperties_t bp;
+            const BYTE* ip = dstBuff;
+            const BYTE* iend;
+            {   size_t const cSize = ZSTD_compress(dstBuff, dstBuffSize, src, srcSize, cLevel);
+                CONTROL(cSize > ZSTD_FRAMEHEADERSIZE_PREFIX(ZSTD_f_zstd1));
+            }
+            /* Skip frame Header */
+            {   size_t const frameHeaderSize = ZSTD_frameHeaderSize(dstBuff, ZSTD_FRAMEHEADERSIZE_PREFIX(ZSTD_f_zstd1));
+                CONTROL(!ZSTD_isError(frameHeaderSize));
+                ip += frameHeaderSize;
+            }
+            /* Find end of block */
+            {   size_t const cBlockSize = ZSTD_getcBlockSize(ip, dstBuffSize, &bp);   /* Get 1st block type */
+                if (bp.blockType != bt_compressed) {
+                    DISPLAY("ZSTD_decodeSeqHeaders : impossible to test on this sample (not compressible)\n");
+                    goto _cleanOut;
+                }
+                iend = ip + ZSTD_blockHeaderSize + cBlockSize;   /* End of first block */
+            }
+            ip += ZSTD_blockHeaderSize;    /* skip block header */
+            ZSTD_decompressBegin(g_zdc);
+            CONTROL(iend > ip);
+            ip += ZSTD_decodeLiteralsBlock(g_zdc, ip, (size_t)(iend-ip), dstBuff, dstBuffSize, not_streaming);   /* skip literal segment */
+            g_cSize = (size_t)(iend-ip);
+            memcpy(dstBuff2, ip, g_cSize);   /* copy rest of block (it starts by SeqHeader) */
+            srcSize = srcSize > 128 KB ? 128 KB : srcSize;   /* speed relative to block */
+            break;
+        }
+#else
+    case 31:
+        goto _cleanOut;
+#endif
+    case 41 :
+        payload = &cparams;
+        break;
+    case 42 :
+        g_cSize = ZSTD_compress(payload, dstBuffSize, src, srcSize, cLevel);
+        break;
+    case 43 :
+        payload = &cparams;
+        break;
+
+    case 52 :
+        /* compressStream2, short dstCapacity */
+        dstBuffSize--;
+        break;
+
+    /* test functions */
+    /* convention: test functions have ID > 100 */
+
+    default : ;
+    }
+
+     /* warming up dstBuff */
+    { size_t i; for (i=0; i<dstBuffSize; i++) dstBuff[i]=(BYTE)i; }
+
+    /* benchmark loop */
+    {   BMK_timedFnState_t* const tfs = BMK_createTimedFnState(g_nbIterations * 1000, 1000);
+        void* const avoidStrictAliasingPtr = &dstBuff;
+        BMK_benchParams_t bp;
+        BMK_runTime_t bestResult;
+        bestResult.sumOfReturn = 0;
+        bestResult.nanoSecPerRun = (double)TIMELOOP_NANOSEC * 2000000000;  /* hopefully large enough : must be larger than any potential measurement */
+        CONTROL(tfs != NULL);
+
+        bp.benchFn = benchFunction;
+        bp.benchPayload = payload;
+        bp.initFn = NULL;
+        bp.initPayload = NULL;
+        bp.errorFn = ZSTD_isError;
+        bp.blockCount = 1;
+        bp.srcBuffers = &src;
+        bp.srcSizes = &srcSize;
+        bp.dstBuffers = (void* const*) avoidStrictAliasingPtr;  /* circumvent strict aliasing warning on gcc-8,
+                                                                 * because gcc considers that `void* const *`  and `void**` are 2 different types */
+        bp.dstCapacities = &dstBuffSize;
+        bp.blockResults = NULL;
+
+        for (;;) {
+            BMK_runOutcome_t const bOutcome = BMK_benchTimedFn(tfs, bp);
+
+            if (!BMK_isSuccessful_runOutcome(bOutcome)) {
+                DISPLAY("ERROR benchmarking function ! ! \n");
+                errorcode = 1;
+                goto _cleanOut;
+            }
+
+            {   BMK_runTime_t const newResult = BMK_extract_runTime(bOutcome);
+                if (newResult.nanoSecPerRun < bestResult.nanoSecPerRun )
+                    bestResult.nanoSecPerRun = newResult.nanoSecPerRun;
+                DISPLAY("\r%2u#%-29.29s:%8.1f MB/s  (%8u) ",
+                        benchNb, benchName,
+                        (double)srcSize * TIMELOOP_NANOSEC / bestResult.nanoSecPerRun / MB_UNIT,
+                        (unsigned)newResult.sumOfReturn );
+            }
+
+            if ( BMK_isCompleted_TimedFn(tfs) ) break;
+        }
+        BMK_freeTimedFnState(tfs);
+    }
+    DISPLAY("\n");
+
+_cleanOut:
+    free(dstBuff);
+    free(dstBuff2);
+    ZSTD_freeCCtx(g_zcc); g_zcc=NULL;
+    ZSTD_freeDCtx(g_zdc); g_zdc=NULL;
+    ZSTD_freeCStream(g_cstream); g_cstream=NULL;
+    ZSTD_freeDStream(g_dstream); g_dstream=NULL;
+    return errorcode;
+}
+
+
+static int benchSample(U32 benchNb,
+                       size_t benchedSize, double compressibility,
+                       int cLevel, ZSTD_compressionParameters cparams)
+{
+    /* Allocation */
+    void* const origBuff = malloc(benchedSize);
+    if (!origBuff) { DISPLAY("\nError: not enough memory!\n"); return 12; }
+
+    /* Fill buffer */
+    RDG_genBuffer(origBuff, benchedSize, compressibility, 0.0, 0);
+
+    /* bench */
+    DISPLAY("\r%70s\r", "");
+    DISPLAY(" Sample %u bytes : \n", (unsigned)benchedSize);
+    if (benchNb) {
+        benchMem(benchNb, origBuff, benchedSize, cLevel, cparams);
+    } else {  /* 0 == run all tests */
+        for (benchNb=0; benchNb<100; benchNb++) {
+            benchMem(benchNb, origBuff, benchedSize, cLevel, cparams);
+    }   }
+
+    free(origBuff);
+    return 0;
+}
+
+
+static int benchFiles(U32 benchNb,
+                      const char** fileNamesTable, const int nbFiles,
+                      int cLevel, ZSTD_compressionParameters cparams)
+{
+    /* Loop for each file */
+    int fileIdx;
+    for (fileIdx=0; fileIdx<nbFiles; fileIdx++) {
+        const char* const inFileName = fileNamesTable[fileIdx];
+        FILE* const inFile = fopen( inFileName, "rb" );
+        size_t benchedSize;
+
+        /* Check file existence */
+        if (inFile==NULL) { DISPLAY( "Pb opening %s\n", inFileName); return 11; }
+
+        /* Memory allocation & restrictions */
+        {   U64 const inFileSize = UTIL_getFileSize(inFileName);
+            if (inFileSize == UTIL_FILESIZE_UNKNOWN) {
+                DISPLAY( "Cannot measure size of %s\n", inFileName);
+                fclose(inFile);
+                return 11;
+            }
+            benchedSize = BMK_findMaxMem(inFileSize*3) / 3;
+            if ((U64)benchedSize > inFileSize)
+                benchedSize = (size_t)inFileSize;
+            if ((U64)benchedSize < inFileSize) {
+                DISPLAY("Not enough memory for '%s' full size; testing %u MB only... \n",
+                        inFileName, (unsigned)(benchedSize>>20));
+        }   }
+
+        /* Alloc */
+        {   void* const origBuff = malloc(benchedSize);
+            if (!origBuff) { DISPLAY("\nError: not enough memory!\n"); fclose(inFile); return 12; }
+
+            /* Fill input buffer */
+            DISPLAY("Loading %s...       \r", inFileName);
+            {   size_t const readSize = fread(origBuff, 1, benchedSize, inFile);
+                fclose(inFile);
+                if (readSize != benchedSize) {
+                    DISPLAY("\nError: problem reading file '%s' !!    \n", inFileName);
+                    free(origBuff);
+                    return 13;
+            }   }
+
+            /* bench */
+            DISPLAY("\r%70s\r", "");   /* blank line */
+            DISPLAY(" %s : \n", inFileName);
+            if (benchNb) {
+                benchMem(benchNb, origBuff, benchedSize, cLevel, cparams);
+            } else {
+                for (benchNb=0; benchNb<100; benchNb++) {
+                    benchMem(benchNb, origBuff, benchedSize, cLevel, cparams);
+                }
+                benchNb = 0;
+            }
+
+            free(origBuff);
+    }   }
+
+    return 0;
+}
+
+
+
+/*_*******************************************************
+*  Argument Parsing
+*********************************************************/
+
+#define ERROR_OUT(msg) { DISPLAY("%s \n", msg); exit(1); }
+
+static unsigned readU32FromChar(const char** stringPtr)
+{
+    const char errorMsg[] = "error: numeric value too large";
+    unsigned result = 0;
+    while ((**stringPtr >='0') && (**stringPtr <='9')) {
+        unsigned const max = (((unsigned)(-1)) / 10) - 1;
+        if (result > max) ERROR_OUT(errorMsg);
+        result *= 10;
+        result += (unsigned)(**stringPtr - '0');
+        (*stringPtr)++ ;
+    }
+    if ((**stringPtr=='K') || (**stringPtr=='M')) {
+        unsigned const maxK = ((unsigned)(-1)) >> 10;
+        if (result > maxK) ERROR_OUT(errorMsg);
+        result <<= 10;
+        if (**stringPtr=='M') {
+            if (result > maxK) ERROR_OUT(errorMsg);
+            result <<= 10;
+        }
+        (*stringPtr)++;  /* skip `K` or `M` */
+        if (**stringPtr=='i') (*stringPtr)++;
+        if (**stringPtr=='B') (*stringPtr)++;
+    }
+    return result;
+}
+
+static int longCommandWArg(const char** stringPtr, const char* longCommand)
+{
+    size_t const comSize = strlen(longCommand);
+    int const result = !strncmp(*stringPtr, longCommand, comSize);
+    if (result) *stringPtr += comSize;
+    return result;
+}
+
+
+/*_*******************************************************
+*  Command line
+*********************************************************/
+
+static int usage(const char* exename)
+{
+    DISPLAY( "Usage :\n");
+    DISPLAY( "      %s [arg] file1 file2 ... fileX\n", exename);
+    DISPLAY( "Arguments :\n");
+    DISPLAY( " -H/-h  : Help (this text + advanced options)\n");
+    return 0;
+}
+
+static int usage_advanced(const char* exename)
+{
+    usage(exename);
+    DISPLAY( "\nAdvanced options :\n");
+    DISPLAY( " -b#    : test only function # \n");
+    DISPLAY( " -l#    : benchmark functions at that compression level (default : %i)\n", DEFAULT_CLEVEL);
+    DISPLAY( "--zstd= : custom parameter selection. Format same as zstdcli \n");
+    DISPLAY( " -P#    : sample compressibility (default : %.1f%%)\n", COMPRESSIBILITY_DEFAULT * 100);
+    DISPLAY( " -B#    : sample size (default : %u)\n", (unsigned)kSampleSizeDefault);
+    DISPLAY( " -i#    : iteration loops [1-9](default : %i)\n", NBLOOPS);
+    return 0;
+}
+
+static int badusage(const char* exename)
+{
+    DISPLAY("Wrong parameters\n");
+    usage(exename);
+    return 1;
+}
+
+int main(int argc, const char** argv)
+{
+    int argNb, filenamesStart=0, result;
+    const char* const exename = argv[0];
+    const char* input_filename = NULL;
+    U32 benchNb = 0, main_pause = 0;
+    int cLevel = DEFAULT_CLEVEL;
+    ZSTD_compressionParameters cparams = ZSTD_getCParams(cLevel, 0, 0);
+    size_t sampleSize = kSampleSizeDefault;
+    double compressibility = COMPRESSIBILITY_DEFAULT;
+
+    DISPLAY(WELCOME_MESSAGE);
+    if (argc<1) return badusage(exename);
+
+    for (argNb=1; argNb<argc; argNb++) {
+        const char* argument = argv[argNb];
+        CONTROL(argument != NULL);
+
+        if (longCommandWArg(&argument, "--zstd=")) {
+            for ( ; ;) {
+                if (longCommandWArg(&argument, "windowLog=") || longCommandWArg(&argument, "wlog=")) { cparams.windowLog = readU32FromChar(&argument); if (argument[0]==',') { argument++; continue; } else break; }
+                if (longCommandWArg(&argument, "chainLog=") || longCommandWArg(&argument, "clog=")) { cparams.chainLog = readU32FromChar(&argument); if (argument[0]==',') { argument++; continue; } else break; }
+                if (longCommandWArg(&argument, "hashLog=") || longCommandWArg(&argument, "hlog=")) { cparams.hashLog = readU32FromChar(&argument); if (argument[0]==',') { argument++; continue; } else break; }
+                if (longCommandWArg(&argument, "searchLog=") || longCommandWArg(&argument, "slog=")) { cparams.searchLog = readU32FromChar(&argument); if (argument[0]==',') { argument++; continue; } else break; }
+                if (longCommandWArg(&argument, "minMatch=") || longCommandWArg(&argument, "mml=")) { cparams.minMatch = readU32FromChar(&argument); if (argument[0]==',') { argument++; continue; } else break; }
+                if (longCommandWArg(&argument, "targetLength=") || longCommandWArg(&argument, "tlen=")) { cparams.targetLength = readU32FromChar(&argument); if (argument[0]==',') { argument++; continue; } else break; }
+                if (longCommandWArg(&argument, "strategy=") || longCommandWArg(&argument, "strat=")) { cparams.strategy = (ZSTD_strategy)(readU32FromChar(&argument)); if (argument[0]==',') { argument++; continue; } else break; }
+                if (longCommandWArg(&argument, "level=") || longCommandWArg(&argument, "lvl=")) { cLevel = (int)readU32FromChar(&argument); cparams = ZSTD_getCParams(cLevel, 0, 0); if (argument[0]==',') { argument++; continue; } else break; }
+                DISPLAY("invalid compression parameter \n");
+                return 1;
+            }
+
+            /* check end of string */
+            if (argument[0] != 0) {
+                DISPLAY("invalid --zstd= format \n");
+                return 1;
+            } else {
+                continue;
+            }
+
+        } else if (argument[0]=='-') { /* Commands (note : aggregated commands are allowed) */
+            argument++;
+            while (argument[0]!=0) {
+
+                switch(argument[0])
+                {
+                    /* Display help on usage */
+                case 'h':
+                case 'H': return usage_advanced(exename);
+
+                    /* Pause at the end (hidden option) */
+                case 'p': main_pause = 1; break;
+
+                    /* Select specific algorithm to bench */
+                case 'b':
+                    argument++;
+                    benchNb = readU32FromChar(&argument);
+                    break;
+
+                    /* Select compression level to use */
+                case 'l':
+                    argument++;
+                    cLevel = (int)readU32FromChar(&argument);
+                    cparams = ZSTD_getCParams(cLevel, 0, 0);
+                    break;
+
+                    /* Select compressibility of synthetic sample */
+                case 'P':
+                    argument++;
+                    compressibility = (double)readU32FromChar(&argument) / 100.;
+                    break;
+
+                    /* Select size of synthetic sample */
+                case 'B':
+                    argument++;
+                    sampleSize = (size_t)readU32FromChar(&argument);
+                    break;
+
+                    /* Modify Nb Iterations */
+                case 'i':
+                    argument++;
+                    g_nbIterations = readU32FromChar(&argument);
+                    break;
+
+                    /* Unknown command */
+                default : return badusage(exename);
+                }
+            }
+            continue;
+        }
+
+        /* first provided filename is input */
+        if (!input_filename) { input_filename=argument; filenamesStart=argNb; continue; }
+    }
+
+
+
+    if (filenamesStart==0)   /* no input file */
+        result = benchSample(benchNb, sampleSize, compressibility, cLevel, cparams);
+    else
+        result = benchFiles(benchNb, argv+filenamesStart, argc-filenamesStart, cLevel, cparams);
+
+    if (main_pause) { int unused; printf("press enter...\n"); unused = getchar(); (void)unused; }
+
+    return result;
+}