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ZstdEncoder.cpp
424 lines (373 loc) · 11.2 KB
/
ZstdEncoder.cpp
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// (C) 2016 - 2020 Tino Reichardt
#include "StdAfx.h"
#include "ZstdEncoder.h"
#include "ZstdDecoder.h"
#ifndef EXTRACT_ONLY
namespace NCompress {
namespace NZSTD {
CEncoder::CEncoder():
_ctx(NULL),
_srcBuf(NULL),
_dstBuf(NULL),
_srcBufSize(ZSTD_CStreamInSize()),
_dstBufSize(ZSTD_CStreamOutSize()),
_processedIn(0),
_processedOut(0),
_numThreads(NWindows::NSystem::GetNumberOfProcessors()),
_Long(-1),
_Level(ZSTD_CLEVEL_DEFAULT),
_Strategy(-1),
_WindowLog(-1),
_HashLog(-1),
_ChainLog(-1),
_SearchLog(-1),
_MinMatch(-1),
_TargetLen(-1),
_OverlapLog(-1),
_LdmHashLog(-1),
_LdmMinMatch(-1),
_LdmBucketSizeLog(-1),
_LdmHashRateLog(-1),
dictIDFlag(-1),
checksumFlag(-1),
unpackSize(0)
{
_props.clear();
}
CEncoder::~CEncoder()
{
if (_ctx) {
ZSTD_freeCCtx(_ctx);
MyFree(_srcBuf);
MyFree(_dstBuf);
}
}
STDMETHODIMP CEncoder::SetCoderProperties(const PROPID * propIDs, const PROPVARIANT * coderProps, UInt32 numProps)
{
_props.clear();
for (UInt32 i = 0; i < numProps; i++)
{
const PROPVARIANT & prop = coderProps[i];
PROPID propID = propIDs[i];
UInt32 v = (UInt32)prop.ulVal;
switch (propID)
{
case NCoderPropID::kNumThreads:
{
SetNumberOfThreads(v);
break;
}
case NCoderPropID::kStrategy:
{
if (v < 1) v = 1;
if (v > 8) v = 8;
_Strategy = v;
break;
}
case NCoderPropID::kLevel:
{
_Level = v;
if (v < 1) {
_Level = 1;
} else if ((Int32)v > ZSTD_maxCLevel()) {
_Level = ZSTD_maxCLevel();
}
/**
* zstd default levels: _Level => 1..ZSTD_maxCLevel()
*/
_props._level = static_cast < Byte > (_Level);
break;
}
case NCoderPropID::kFast:
{
/* like --fast in zstd cli program */
UInt32 _Fast = v;
if (v < 1) {
_Fast = 1;
} else if (v > 64) {
_Fast = 64;
}
/**
* zstd fast levels:
* _Fast => 1..ZSTD_minCLevel() (_Level => _Fast + 32)
*/
_props._level = static_cast < Byte > (_Fast + 32);
/* negative levels are the fast ones */
_Level = _Fast * -1;
break;
}
case NCoderPropID::kLong:
{
/* like --long in zstd cli program */
_Long = 1;
if (v == 0) {
// m0=zstd:long:tlen=x -> long=default
_WindowLog = 27;
} else if (v < ZSTD_WINDOWLOG_MIN) {
// m0=zstd:long=9 -> long=10
_WindowLog = ZSTD_WINDOWLOG_MIN;
} else if (v > ZSTD_WINDOWLOG_MAX) {
// m0=zstd:long=33 -> long=max
_WindowLog = ZSTD_WINDOWLOG_MAX;
} else {
// m0=zstd:long=15 -> long=value
_WindowLog = v;
}
break;
}
case NCoderPropID::kWindowLog:
{
if (v < ZSTD_WINDOWLOG_MIN) v = ZSTD_WINDOWLOG_MIN;
if (v > ZSTD_WINDOWLOG_MAX) v = ZSTD_WINDOWLOG_MAX;
_WindowLog = v;
break;
}
case NCoderPropID::kHashLog:
{
if (v < ZSTD_HASHLOG_MIN) v = ZSTD_HASHLOG_MIN;
if (v > ZSTD_HASHLOG_MAX) v = ZSTD_HASHLOG_MAX;
_HashLog = v;
break;
}
case NCoderPropID::kChainLog:
{
if (v < ZSTD_CHAINLOG_MIN) v = ZSTD_CHAINLOG_MIN;
if (v > ZSTD_CHAINLOG_MAX) v = ZSTD_CHAINLOG_MAX;
_ChainLog = v;
break;
}
case NCoderPropID::kSearchLog:
{
if (v < ZSTD_SEARCHLOG_MIN) v = ZSTD_SEARCHLOG_MIN;
if (v > ZSTD_SEARCHLOG_MAX) v = ZSTD_SEARCHLOG_MAX;
_SearchLog = v;
break;
}
case NCoderPropID::kMinMatch:
{
if (v < ZSTD_MINMATCH_MIN) v = ZSTD_MINMATCH_MIN;
if (v > ZSTD_MINMATCH_MAX) v = ZSTD_MINMATCH_MAX;
_MinMatch = v;
break;
}
case NCoderPropID::kTargetLen:
{
if (v < ZSTD_TARGETLENGTH_MIN) v = ZSTD_TARGETLENGTH_MIN;
if (v > ZSTD_TARGETLENGTH_MAX) v = ZSTD_TARGETLENGTH_MAX;
_TargetLen = 0;
break;
}
case NCoderPropID::kOverlapLog:
{
if (v < 0) v = 0; /* no overlap */
if (v > 9) v = 9; /* full size */
_OverlapLog = v;
break;
}
case NCoderPropID::kLdmHashLog:
{
if (v < ZSTD_HASHLOG_MIN) v = ZSTD_HASHLOG_MIN;
if (v > ZSTD_HASHLOG_MAX) v = ZSTD_HASHLOG_MAX;
_LdmHashLog = v;
break;
}
case NCoderPropID::kLdmSearchLength:
{
if (v < ZSTD_LDM_MINMATCH_MIN) v = ZSTD_LDM_MINMATCH_MIN;
if (v > ZSTD_LDM_MINMATCH_MAX) v = ZSTD_LDM_MINMATCH_MAX;
_LdmMinMatch = v;
break;
}
case NCoderPropID::kLdmBucketSizeLog:
{
if (v < 1) v = 1;
if (v > ZSTD_LDM_BUCKETSIZELOG_MAX) v = ZSTD_LDM_BUCKETSIZELOG_MAX;
_LdmBucketSizeLog = v;
break;
}
case NCoderPropID::kLdmHashRateLog:
{
if (v < 0) v = 0; /* 0 => automatic mode */
if (v > (ZSTD_WINDOWLOG_MAX - ZSTD_HASHLOG_MIN)) v = (ZSTD_WINDOWLOG_MAX - ZSTD_HASHLOG_MIN);
_LdmHashRateLog = v;
break;
}
default:
{
break;
}
}
}
return S_OK;
}
STDMETHODIMP CEncoder::WriteCoderProperties(ISequentialOutStream * outStream)
{
return WriteStream(outStream, &_props, sizeof (_props));
}
STDMETHODIMP CEncoder::Code(ISequentialInStream *inStream,
ISequentialOutStream *outStream, const UInt64 * /*inSize*/ ,
const UInt64 * /*outSize */, ICompressProgressInfo *progress)
{
ZSTD_EndDirective ZSTD_todo = ZSTD_e_continue;
ZSTD_outBuffer outBuff;
ZSTD_inBuffer inBuff;
size_t err, srcSize;
_processedIn = 0;
_processedOut = 0;
if (!_ctx) {
_ctx = ZSTD_createCCtx();
if (!_ctx)
return E_OUTOFMEMORY;
_srcBuf = MyAlloc(_srcBufSize);
if (!_srcBuf)
return E_OUTOFMEMORY;
_dstBuf = MyAlloc(_dstBufSize);
if (!_dstBuf)
return E_OUTOFMEMORY;
/* setup level */
err = ZSTD_CCtx_setParameter(_ctx, ZSTD_c_compressionLevel, (UInt32)_Level);
if (ZSTD_isError(err)) return E_INVALIDARG;
/* setup thread count */
err = ZSTD_CCtx_setParameter(_ctx, ZSTD_c_nbWorkers, _numThreads);
if (ZSTD_isError(err)) return E_INVALIDARG;
/* set the content size flag */
err = ZSTD_CCtx_setParameter(_ctx, ZSTD_c_contentSizeFlag, 1);
if (ZSTD_isError(err)) return E_INVALIDARG;
if (dictIDFlag != -1) {
err = ZSTD_CCtx_setParameter(_ctx, ZSTD_c_dictIDFlag, dictIDFlag);
if (ZSTD_isError(err)) return E_INVALIDARG;
}
if (checksumFlag != -1) {
err = ZSTD_CCtx_setParameter(_ctx, ZSTD_c_checksumFlag, checksumFlag);
if (ZSTD_isError(err)) return E_INVALIDARG;
}
if (unpackSize && unpackSize != (UInt64)(Int64)-1) { // size is known
err = ZSTD_CCtx_setParameter(_ctx, ZSTD_c_srcSizeHint, (int)(unpackSize <= INT_MAX ? unpackSize : INT_MAX));
if (ZSTD_isError(err)) return E_INVALIDARG;
}
/* enable ldm for large windowlog values */
if (_WindowLog > 27 && _Long == 0)
_Long = 1;
/* set ldm */
if (_Long != -1) {
err = ZSTD_CCtx_setParameter(_ctx, ZSTD_c_enableLongDistanceMatching, _Long);
if (ZSTD_isError(err)) return E_INVALIDARG;
}
if (_Strategy != -1) {
err = ZSTD_CCtx_setParameter(_ctx, ZSTD_c_strategy, _Strategy);
if (ZSTD_isError(err)) return E_INVALIDARG;
}
if (_WindowLog != -1) {
err = ZSTD_CCtx_setParameter(_ctx, ZSTD_c_windowLog, _WindowLog);
if (ZSTD_isError(err)) return E_INVALIDARG;
}
if (_HashLog != -1) {
err = ZSTD_CCtx_setParameter(_ctx, ZSTD_c_hashLog, _HashLog);
if (ZSTD_isError(err)) return E_INVALIDARG;
}
if (_ChainLog != -1) {
err = ZSTD_CCtx_setParameter(_ctx, ZSTD_c_chainLog, _ChainLog);
if (ZSTD_isError(err)) return E_INVALIDARG;
}
if (_SearchLog != -1) {
err = ZSTD_CCtx_setParameter(_ctx, ZSTD_c_searchLog, _SearchLog);
if (ZSTD_isError(err)) return E_INVALIDARG;
}
if (_MinMatch != -1) {
err = ZSTD_CCtx_setParameter(_ctx, ZSTD_c_minMatch, _MinMatch);
if (ZSTD_isError(err)) return E_INVALIDARG;
}
if (_TargetLen != -1) {
err = ZSTD_CCtx_setParameter(_ctx, ZSTD_c_targetLength, _TargetLen);
if (ZSTD_isError(err)) return E_INVALIDARG;
}
if (_OverlapLog != -1) {
err = ZSTD_CCtx_setParameter(_ctx, ZSTD_c_overlapLog, _OverlapLog);
if (ZSTD_isError(err)) return E_INVALIDARG;
}
if (_LdmHashLog != -1) {
err = ZSTD_CCtx_setParameter(_ctx, ZSTD_c_ldmHashLog, _LdmHashLog);
if (ZSTD_isError(err)) return E_INVALIDARG;
}
if (_LdmMinMatch != -1) {
err = ZSTD_CCtx_setParameter(_ctx, ZSTD_c_ldmMinMatch, _LdmMinMatch);
if (ZSTD_isError(err)) return E_INVALIDARG;
}
if (_LdmBucketSizeLog != -1) {
err = ZSTD_CCtx_setParameter(_ctx, ZSTD_c_ldmBucketSizeLog, _LdmBucketSizeLog);
if (ZSTD_isError(err)) return E_INVALIDARG;
}
if (_LdmHashRateLog != -1) {
err = ZSTD_CCtx_setParameter(_ctx, ZSTD_c_ldmHashRateLog, _LdmHashRateLog);
if (ZSTD_isError(err)) return E_INVALIDARG;
}
//err = ZSTD_CCtx_setParameter(_ctx, ZSTD_c_literalCompressionMode, (int)ZSTD_ps_auto);
//if (ZSTD_isError(err)) return E_INVALIDARG;
//err = ZSTD_CCtx_setParameter(_ctx, ZSTD_c_enableDedicatedDictSearch, 1);
//if (ZSTD_isError(err)) return E_INVALIDARG;
}
for (;;) {
/* read input */
srcSize = _srcBufSize;
RINOK(ReadStream(inStream, _srcBuf, &srcSize));
/* eof */
if (srcSize == 0)
ZSTD_todo = ZSTD_e_end;
/* compress data */
_processedIn += srcSize;
for (;;) {
outBuff.dst = _dstBuf;
outBuff.size = _dstBufSize;
outBuff.pos = 0;
if (ZSTD_todo == ZSTD_e_continue) {
inBuff.src = _srcBuf;
inBuff.size = srcSize;
inBuff.pos = 0;
} else {
inBuff.src = 0;
inBuff.size = srcSize;
inBuff.pos = 0;
}
err = ZSTD_compressStream2(_ctx, &outBuff, &inBuff, ZSTD_todo);
if (ZSTD_isError(err)) {
switch (ZSTD_getErrorCode(err)) {
/* @Igor: would be nice, if we have an API to store the errmsg */
case ZSTD_error_memory_allocation:
return E_OUTOFMEMORY;
case ZSTD_error_version_unsupported:
case ZSTD_error_frameParameter_unsupported:
return E_NOTIMPL;
case ZSTD_error_frameParameter_windowTooLarge:
case ZSTD_error_parameter_unsupported:
case ZSTD_error_parameter_outOfBound:
return E_INVALIDARG;
default:
return E_FAIL;
}
}
/* write output */
if (outBuff.pos) {
RINOK(WriteStream(outStream, _dstBuf, outBuff.pos));
_processedOut += outBuff.pos;
}
if (progress)
RINOK(progress->SetRatioInfo(&_processedIn, &_processedOut));
/* done */
if (ZSTD_todo == ZSTD_e_end && err == 0)
return S_OK;
/* need more input */
if (inBuff.pos == inBuff.size)
break;
}
}
}
STDMETHODIMP CEncoder::SetNumberOfThreads(UInt32 numThreads)
{
const UInt32 kNumThreadsMax = ZSTD_THREAD_MAX;
if (numThreads < 1) numThreads = 1;
if (numThreads > kNumThreadsMax) numThreads = kNumThreadsMax;
_numThreads = numThreads;
return S_OK;
}
}}
#endif