ddidderr/zstd-rs
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changed frameContentSize field to pledgedSrcSizePlusOne

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pledgedSrcSize is proper : it's a promise, not yet fulfilled.
It will be controlled at the end.

PlusOne is meant to have 0 (default) == unknown
This commit is contained in:
Yann Collet
2017-06-16 13:29:17 -07:00
parent 2cf7755da7
commit a0ba849fe6
1 changed files with 25 additions and 20 deletions
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lib/compress/zstd_compress.c
+25 -20
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@@ -98,7 +98,7 @@ struct ZSTD_CCtx_s {
void* workSpace;
size_t workSpaceSize;
size_t blockSize;
U64 frameContentSize;
U64 pledgedSrcSizePlusOne; /* this way, 0 (default) == unknown */
U64 consumedSrcSize;
XXH64_state_t xxhState;
ZSTD_customMem customMem;
@@ -152,6 +152,8 @@ ZSTD_CCtx* ZSTD_createCCtx_advanced(ZSTD_customMem customMem)
if (!cctx) return NULL;
cctx->customMem = customMem;
cctx->compressionLevel = ZSTD_CLEVEL_DEFAULT;
ZSTD_STATIC_ASSERT(zcss_init==0);
ZSTD_STATIC_ASSERT(ZSTD_CONTENTSIZE_UNKNOWN==-(1ULL));
return cctx;
}
@@ -233,7 +235,7 @@ static void ZSTD_cLevelToCParams(ZSTD_CCtx* cctx)
{
if (cctx->compressionLevel==ZSTD_CLEVEL_CUSTOM) return;
cctx->requestedParams.cParams = ZSTD_getCParams(cctx->compressionLevel,
cctx->frameContentSize, 0);
cctx->pledgedSrcSizePlusOne-1, 0);
cctx->compressionLevel = ZSTD_CLEVEL_CUSTOM;
}
@@ -374,7 +376,7 @@ ZSTDLIB_API size_t ZSTD_CCtx_setPledgedSrcSize(ZSTD_CCtx* cctx, unsigned long lo
{
DEBUGLOG(5, " setting pledgedSrcSize to %u", (U32)pledgedSrcSize);
if (cctx->streamStage != zcss_init) return ERROR(stage_wrong);
cctx->frameContentSize = pledgedSrcSize;
cctx->pledgedSrcSizePlusOne = pledgedSrcSize+1;
return 0;
}
@@ -421,7 +423,7 @@ size_t ZSTD_CCtx_refCDict(ZSTD_CCtx* cctx, const ZSTD_CDict* cdict)
void ZSTD_CCtx_reset(ZSTD_CCtx* cctx)
{
cctx->streamStage = zcss_init;
cctx->frameContentSize = ZSTD_CONTENTSIZE_UNKNOWN;
cctx->pledgedSrcSizePlusOne = 0;
cctx->cdict = NULL;
}
@@ -531,7 +533,7 @@ static size_t ZSTD_continueCCtx(ZSTD_CCtx* cctx, ZSTD_parameters params, U64 fra
U32 const end = (U32)(cctx->nextSrc - cctx->base);
DEBUGLOG(5, "continue mode");
cctx->appliedParams = params;
cctx->frameContentSize = frameContentSize;
cctx->pledgedSrcSizePlusOne = frameContentSize+1;
cctx->consumedSrcSize = 0;
if (frameContentSize == ZSTD_CONTENTSIZE_UNKNOWN)
cctx->appliedParams.fParams.contentSizeFlag = 0;
@@ -554,7 +556,7 @@ typedef enum { ZSTDcrp_continue, ZSTDcrp_noMemset } ZSTD_compResetPolicy_e;
/*! ZSTD_resetCCtx_internal() :
note : `params` are assumed fully validated at this stage */
static size_t ZSTD_resetCCtx_internal(ZSTD_CCtx* zc,
ZSTD_parameters params, U64 frameContentSize,
ZSTD_parameters params, U64 pledgedSrcSize,
ZSTD_compResetPolicy_e const crp,
ZSTD_buffered_policy_e const zbuff)
{
@@ -565,7 +567,7 @@ static size_t ZSTD_resetCCtx_internal(ZSTD_CCtx* zc,
DEBUGLOG(5, "ZSTD_equivalentParams()==1");
zc->fseCTables_ready = 0;
zc->hufCTable_repeatMode = HUF_repeat_none;
return ZSTD_continueCCtx(zc, params, frameContentSize);
return ZSTD_continueCCtx(zc, params, pledgedSrcSize);
} }
{ size_t const blockSize = MIN(ZSTD_BLOCKSIZE_MAX, (size_t)1 << params.cParams.windowLog);
@@ -626,9 +628,9 @@ static size_t ZSTD_resetCCtx_internal(ZSTD_CCtx* zc,
/* init params */
zc->appliedParams = params;
zc->frameContentSize = frameContentSize;
zc->pledgedSrcSizePlusOne = pledgedSrcSize+1;
zc->consumedSrcSize = 0;
if (frameContentSize == ZSTD_CONTENTSIZE_UNKNOWN)
if (pledgedSrcSize == ZSTD_CONTENTSIZE_UNKNOWN)
zc->appliedParams.fParams.contentSizeFlag = 0;
DEBUGLOG(5, "content size : %u ; flag : %u",
(U32)frameContentSize, zc->appliedParams.fParams.contentSizeFlag);
@@ -2873,7 +2875,8 @@ static size_t ZSTD_compressContinue_internal (ZSTD_CCtx* cctx,
if (cctx->stage==ZSTDcs_created) return ERROR(stage_wrong); /* missing init (ZSTD_compressBegin) */
if (frame && (cctx->stage==ZSTDcs_init)) {
fhSize = ZSTD_writeFrameHeader(dst, dstCapacity, cctx->appliedParams, cctx->frameContentSize, cctx->dictID);
fhSize = ZSTD_writeFrameHeader(dst, dstCapacity, cctx->appliedParams,
cctx->pledgedSrcSizePlusOne-1, cctx->dictID);
if (ZSTD_isError(fhSize)) return fhSize;
dstCapacity -= fhSize;
dst = (char*)dst + fhSize;
@@ -3208,7 +3211,7 @@ size_t ZSTD_compressEnd (ZSTD_CCtx* cctx,
if (ZSTD_isError(endResult)) return endResult;
if (cctx->appliedParams.fParams.contentSizeFlag) { /* control src size */
DEBUGLOG(5, "end of frame : controlling src size");
if (cctx->frameContentSize != cctx->consumedSrcSize) {
if (cctx->pledgedSrcSizePlusOne != cctx->consumedSrcSize+1) {
DEBUGLOG(5, "error : pledgedSrcSize = %u, while realSrcSize = %u",
(U32)cctx->frameContentSize, (U32)cctx->consumedSrcSize);
return ERROR(srcSize_wrong);
@@ -3697,7 +3700,7 @@ static size_t ZSTD_compressStream_generic(ZSTD_CStream* zcs,
DEBUGLOG(5, "Frame completed directly in outBuffer");
someMoreWork = 0;
zcs->streamStage = zcss_init;
zcs->frameContentSize = ZSTD_CONTENTSIZE_UNKNOWN;
zcs->pledgedSrcSizePlusOne = 0;
}
break;
}
@@ -3724,7 +3727,7 @@ static size_t ZSTD_compressStream_generic(ZSTD_CStream* zcs,
DEBUGLOG(5, "Frame completed on flush");
someMoreWork = 0;
zcs->streamStage = zcss_init;
zcs->frameContentSize = ZSTD_CONTENTSIZE_UNKNOWN;
zcs->pledgedSrcSizePlusOne = 0;
break;
}
zcs->streamStage = zcss_load;
@@ -3782,27 +3785,29 @@ size_t ZSTD_compress_generic (ZSTD_CCtx* cctx,
ZSTD_parameters params = cctx->requestedParams;
if (cctx->compressionLevel != ZSTD_CLEVEL_CUSTOM)
params.cParams = ZSTD_getCParams(cctx->compressionLevel,
cctx->frameContentSize, 0 /* dictSize */);
cctx->pledgedSrcSizePlusOne+1, 0 /* dictSize */);
#ifdef ZSTD_MULTITHREAD
if (cctx->nbThreads > 1) {
CHECK_F( ZSTDMT_initCStream_internal(cctx->mtctx, NULL, 0, cctx->cdict, params, cctx->frameContentSize) );
CHECK_F( ZSTDMT_initCStream_internal(cctx->mtctx, NULL, 0, cctx->cdict, params, cctx->pledgedSrcSizePlusOne-1) );
cctx->streamStage = zcss_load;
} else
#endif
{
CHECK_F( ZSTD_resetCStream_internal(cctx, params, cctx->frameContentSize) );
CHECK_F( ZSTD_resetCStream_internal(cctx, params, cctx->pledgedSrcSizePlusOne+1) );
} }
#ifdef ZSTD_MULTITHREAD
if (cctx->nbThreads > 1) {
DEBUGLOG(5, "calling ZSTDMT_compressStream_generic(%i,...)", endOp);
size_t const flushMin = ZSTDMT_compressStream_generic(cctx->mtctx, output, input, endOp);
DEBUGLOG(5, "ZSTDMT result : %u", (U32)flushMin);
if (ZSTD_isError(flushMin)) cctx->streamStage = zcss_init;
if (endOp == ZSTD_e_end && flushMin==0) {
if (ZSTD_isError(flushMin)) {
cctx->streamStage = zcss_init;
cctx->pledgedSrcSizePlusOne = 0;
}
if (endOp == ZSTD_e_end && flushMin == 0) {
cctx->streamStage = zcss_init; /* compression completed */
cctx->frameContentSize = ZSTD_CONTENTSIZE_UNKNOWN;
cctx->pledgedSrcSizePlusOne = 0;
}
return flushMin;
}