public SRes Lzma2Enc_SetProps(CLzma2EncProps props) { TR("Lzma2Enc_SetProps:level", props.mLzmaProps.mLevel); TR("Lzma2Enc_SetProps:dictSize", props.mLzmaProps.mDictSize); TR("Lzma2Enc_SetProps:lc", props.mLzmaProps.mLC); TR("Lzma2Enc_SetProps:lp", props.mLzmaProps.mLP); TR("Lzma2Enc_SetProps:pb", props.mLzmaProps.mPB); TR("Lzma2Enc_SetProps:algo", props.mLzmaProps.mAlgo); TR("Lzma2Enc_SetProps:fb", props.mLzmaProps.mFB); TR("Lzma2Enc_SetProps:btMode", props.mLzmaProps.mBtMode); TR("Lzma2Enc_SetProps:numHashBytes", props.mLzmaProps.mNumHashBytes); TR("Lzma2Enc_SetProps:mc", props.mLzmaProps.mMC); TR("Lzma2Enc_SetProps:writeEndMark", props.mLzmaProps.mWriteEndMark); TR("Lzma2Enc_SetProps:numThreads", props.mLzmaProps.mNumThreads); TR("Lzma2Enc_SetProps:blockSize", checked ((int)props.mBlockSize)); TR("Lzma2Enc_SetProps:numBlockThreads", props.mNumBlockThreads); TR("Lzma2Enc_SetProps:numTotalThreads", props.mNumTotalThreads); CLzmaEncProps lzmaProps = new CLzmaEncProps(props.mLzmaProps); lzmaProps.LzmaEncProps_Normalize(); if (lzmaProps.mLC + lzmaProps.mLP > LZMA2_LCLP_MAX) { return(SZ_ERROR_PARAM); } mProps = new CLzma2EncProps(props); mProps.Lzma2EncProps_Normalize(); return(SZ_OK); }
public void Lzma2EncProps_Init() { mLzmaProps = CLzmaEncProps.LzmaEncProps_Init(); mNumTotalThreads = -1; mNumBlockThreads = -1; mBlockSize = 0; }
public CLzma2EncProps(CLzma2EncProps other) { mLzmaProps = new CLzmaEncProps(other.mLzmaProps); mBlockSize = other.mBlockSize; mNumBlockThreads = other.mNumBlockThreads; mNumTotalThreads = other.mNumTotalThreads; }
/* ---------- One Call Interface ---------- */ /* LzmaEncode Return code: SZ_OK - OK SZ_ERROR_MEM - Memory allocation error SZ_ERROR_PARAM - Incorrect paramater SZ_ERROR_OUTPUT_EOF - output buffer overflow SZ_ERROR_THREAD - errors in multithreading functions (only for Mt version) */ public static SRes LzmaEncode(P<byte> dest, ref long destLen, P<byte> src, long srcLen, CLzmaEncProps props, P<byte> propsEncoded, ref long propsSize, bool writeEndMark, ICompressProgress progress, ISzAlloc alloc, ISzAlloc allocBig) { CLzmaEnc encoder = LzmaEnc_Create(alloc); if (encoder == null) return SZ_ERROR_MEM; SRes res; res = encoder.LzmaEnc_SetProps(props); if (res == SZ_OK) { res = encoder.LzmaEnc_WriteProperties(propsEncoded, ref propsSize); if (res == SZ_OK) res = encoder.LzmaEnc_MemEncode(dest, ref destLen, src, srcLen, writeEndMark, progress, alloc, allocBig); } encoder.LzmaEnc_Destroy(alloc, allocBig); return res; }
/* * RAM requirements for LZMA: * for compression: (dictSize * 11.5 + 6 MB) + state_size * for decompression: dictSize + state_size * state_size = (4 + (1.5 << (lc + lp))) KB * by default (lc=3, lp=0), state_size = 16 KB. * * LZMA properties (5 bytes) format * Offset Size Description * 0 1 lc, lp and pb in encoded form. * 1 4 dictSize (little endian). */ /* * LzmaCompress * ------------ * * outPropsSize - * In: the pointer to the size of outProps buffer; *outPropsSize = LZMA_PROPS_SIZE = 5. * Out: the pointer to the size of written properties in outProps buffer; *outPropsSize = LZMA_PROPS_SIZE = 5. * * LZMA Encoder will use defult values for any parameter, if it is * -1 for any from: level, loc, lp, pb, fb, numThreads * 0 for dictSize * * level - compression level: 0 <= level <= 9; * * level dictSize algo fb * 0: 16 KB 0 32 * 1: 64 KB 0 32 * 2: 256 KB 0 32 * 3: 1 MB 0 32 * 4: 4 MB 0 32 * 5: 16 MB 1 32 * 6: 32 MB 1 32 * 7+: 64 MB 1 64 * * The default value for "level" is 5. * * algo = 0 means fast method * algo = 1 means normal method * * dictSize - The dictionary size in bytes. The maximum value is * 128 MB = (1 << 27) bytes for 32-bit version * 1 GB = (1 << 30) bytes for 64-bit version * The default value is 16 MB = (1 << 24) bytes. * It's recommended to use the dictionary that is larger than 4 KB and * that can be calculated as (1 << N) or (3 << N) sizes. * * lc - The number of literal context bits (high bits of previous literal). * It can be in the range from 0 to 8. The default value is 3. * Sometimes lc=4 gives the gain for big files. * * lp - The number of literal pos bits (low bits of current position for literals). * It can be in the range from 0 to 4. The default value is 0. * The lp switch is intended for periodical data when the period is equal to 2^lp. * For example, for 32-bit (4 bytes) periodical data you can use lp=2. Often it's * better to set lc=0, if you change lp switch. * * pb - The number of pos bits (low bits of current position). * It can be in the range from 0 to 4. The default value is 2. * The pb switch is intended for periodical data when the period is equal 2^pb. * * fb - Word size (the number of fast bytes). * It can be in the range from 5 to 273. The default value is 32. * Usually, a big number gives a little bit better compression ratio and * slower compression process. * * numThreads - The number of thereads. 1 or 2. The default value is 2. * Fast mode (algo = 0) can use only 1 thread. * * Out: * destLen - processed output size * Returns: * SZ_OK - OK * SZ_ERROR_MEM - Memory allocation error * SZ_ERROR_PARAM - Incorrect paramater * SZ_ERROR_OUTPUT_EOF - output buffer overflow * SZ_ERROR_THREAD - errors in multithreading functions (only for Mt version) */ public static SRes LzmaCompress( P <byte> dest, ref long destLen, P <byte> src, long srcLen, P <byte> outProps, ref long outPropsSize, /* *outPropsSize must be = 5 */ int level, /* 0 <= level <= 9, default = 5 */ uint dictSize, /* default = (1 << 24) */ int lc, /* 0 <= lc <= 8, default = 3 */ int lp, /* 0 <= lp <= 4, default = 0 */ int pb, /* 0 <= pb <= 4, default = 2 */ int fb, /* 5 <= fb <= 273, default = 32 */ int numThreads) /* 1 or 2, default = 2 */ { var props = CLzmaEncProps.LzmaEncProps_Init(); props.mLevel = level; props.mDictSize = dictSize; props.mLC = lc; props.mLP = lp; props.mPB = pb; props.mFB = fb; props.mNumThreads = numThreads; return(LzmaEncode(dest, ref destLen, src, srcLen, props, outProps, ref outPropsSize, false, null, ISzAlloc.SmallAlloc, ISzAlloc.BigAlloc)); }
internal uint LzmaEncProps_GetDictSize() { CLzmaEncProps props = new CLzmaEncProps(this); props.LzmaEncProps_Normalize(); return props.mDictSize; }
public CLzmaEncProps(CLzmaEncProps other) { this.mLevel = other.mLevel; this.mDictSize = other.mDictSize; this.mReduceSize = other.mReduceSize; this.mLC = other.mLC; this.mLP = other.mLP; this.mPB = other.mPB; this.mAlgo = other.mAlgo; this.mFB = other.mFB; this.mBtMode = other.mBtMode; this.mNumHashBytes = other.mNumHashBytes; this.mMC = other.mMC; this.mWriteEndMark = other.mWriteEndMark; this.mNumThreads = other.mNumThreads; }
public SRes LzmaEnc_SetProps(CLzmaEncProps props2) { TR("LzmaEnc_SetProps:level", props2.mLevel); TR("LzmaEnc_SetProps:dictSize", props2.mDictSize); TR("LzmaEnc_SetProps:lc", props2.mLC); TR("LzmaEnc_SetProps:lp", props2.mLP); TR("LzmaEnc_SetProps:pb", props2.mPB); TR("LzmaEnc_SetProps:algo", props2.mAlgo); TR("LzmaEnc_SetProps:fb", props2.mFB); TR("LzmaEnc_SetProps:btMode", props2.mBtMode); TR("LzmaEnc_SetProps:numHashBytes", props2.mNumHashBytes); TR("LzmaEnc_SetProps:mc", props2.mMC); TR("LzmaEnc_SetProps:writeEndMark", props2.mWriteEndMark); TR("LzmaEnc_SetProps:numThreads", props2.mNumThreads); CLzmaEncProps props = new CLzmaEncProps(props2); props.LzmaEncProps_Normalize(); if (props.mLC > LZMA_LC_MAX || props.mLP > LZMA_LP_MAX || props.mPB > LZMA_PB_MAX || props.mDictSize > (1u << kDicLogSizeMaxCompress) || props.mDictSize > (1u << 30)) return SZ_ERROR_PARAM; mDictSize = props.mDictSize; uint fb = (uint)props.mFB; if (fb < 5) fb = 5; if (fb > LZMA_MATCH_LEN_MAX) fb = LZMA_MATCH_LEN_MAX; mNumFastBytes = fb; mLC = props.mLC; mLP = props.mLP; mPB = props.mPB; mFastMode = (props.mAlgo == 0); mMatchFinderBase.mBtMode = (props.mBtMode != 0); uint numHashBytes = 4; if (props.mBtMode != 0) { if (props.mNumHashBytes < 2) numHashBytes = 2; else if (props.mNumHashBytes < 4) numHashBytes = (uint)props.mNumHashBytes; } mMatchFinderBase.mNumHashBytes = numHashBytes; mMatchFinderBase.mCutValue = props.mMC; mWriteEndMark = (props.mWriteEndMark != 0); #if !_7ZIP_ST mMultiThread = (props.mNumThreads > 1); #endif return SZ_OK; }
public void Lzma2EncProps_Normalize() { CLzmaEncProps normalizedLzmaProps = new CLzmaEncProps(mLzmaProps); normalizedLzmaProps.LzmaEncProps_Normalize(); int tempThreadsNormalized = normalizedLzmaProps.mNumThreads; int tempThreads = mLzmaProps.mNumThreads; int tempBlockThreads = mNumBlockThreads; int tempTotalThreads = mNumTotalThreads; if (tempBlockThreads > NUM_MT_CODER_THREADS_MAX) { tempBlockThreads = NUM_MT_CODER_THREADS_MAX; } if (tempTotalThreads <= 0) { if (tempBlockThreads <= 0) { tempBlockThreads = 1; } tempTotalThreads = tempThreadsNormalized * tempBlockThreads; } else if (tempBlockThreads <= 0) { tempBlockThreads = tempTotalThreads / tempThreadsNormalized; if (tempBlockThreads == 0) { tempThreads = 1; tempBlockThreads = tempTotalThreads; } if (tempBlockThreads > NUM_MT_CODER_THREADS_MAX) { tempBlockThreads = NUM_MT_CODER_THREADS_MAX; } } else if (tempThreads <= 0) { tempThreads = tempTotalThreads / tempBlockThreads; if (tempThreads == 0) { tempThreads = 1; } } else { tempTotalThreads = tempThreadsNormalized * tempBlockThreads; } mLzmaProps.mNumThreads = tempThreads; mNumBlockThreads = tempBlockThreads; mNumTotalThreads = tempTotalThreads; mLzmaProps.LzmaEncProps_Normalize(); if (mBlockSize == 0) { uint dictSize = mLzmaProps.mDictSize; long blockSize = (long)dictSize << 2; const uint kMinSize = 1 << 20; const uint kMaxSize = 1 << 28; if (blockSize < kMinSize) { blockSize = kMinSize; } if (blockSize > kMaxSize) { blockSize = kMaxSize; } if (blockSize < dictSize) { blockSize = dictSize; } mBlockSize = blockSize; } }
public SRes Lzma2Enc_SetProps(CLzma2EncProps props) { TR("Lzma2Enc_SetProps:level", props.mLzmaProps.mLevel); TR("Lzma2Enc_SetProps:dictSize", props.mLzmaProps.mDictSize); TR("Lzma2Enc_SetProps:lc", props.mLzmaProps.mLC); TR("Lzma2Enc_SetProps:lp", props.mLzmaProps.mLP); TR("Lzma2Enc_SetProps:pb", props.mLzmaProps.mPB); TR("Lzma2Enc_SetProps:algo", props.mLzmaProps.mAlgo); TR("Lzma2Enc_SetProps:fb", props.mLzmaProps.mFB); TR("Lzma2Enc_SetProps:btMode", props.mLzmaProps.mBtMode); TR("Lzma2Enc_SetProps:numHashBytes", props.mLzmaProps.mNumHashBytes); TR("Lzma2Enc_SetProps:mc", props.mLzmaProps.mMC); TR("Lzma2Enc_SetProps:writeEndMark", props.mLzmaProps.mWriteEndMark); TR("Lzma2Enc_SetProps:numThreads", props.mLzmaProps.mNumThreads); TR("Lzma2Enc_SetProps:blockSize", checked((int)props.mBlockSize)); TR("Lzma2Enc_SetProps:numBlockThreads", props.mNumBlockThreads); TR("Lzma2Enc_SetProps:numTotalThreads", props.mNumTotalThreads); CLzmaEncProps lzmaProps = new CLzmaEncProps(props.mLzmaProps); lzmaProps.LzmaEncProps_Normalize(); if (lzmaProps.mLC + lzmaProps.mLP > LZMA2_LCLP_MAX) return SZ_ERROR_PARAM; mProps = new CLzma2EncProps(props); mProps.Lzma2EncProps_Normalize(); return SZ_OK; }
public void Lzma2EncProps_Normalize() { CLzmaEncProps normalizedLzmaProps = new CLzmaEncProps(mLzmaProps); normalizedLzmaProps.LzmaEncProps_Normalize(); int tempThreadsNormalized = normalizedLzmaProps.mNumThreads; int tempThreads = mLzmaProps.mNumThreads; int tempBlockThreads = mNumBlockThreads; int tempTotalThreads = mNumTotalThreads; if (tempBlockThreads > NUM_MT_CODER_THREADS_MAX) tempBlockThreads = NUM_MT_CODER_THREADS_MAX; if (tempTotalThreads <= 0) { if (tempBlockThreads <= 0) tempBlockThreads = 1; tempTotalThreads = tempThreadsNormalized * tempBlockThreads; } else if (tempBlockThreads <= 0) { tempBlockThreads = tempTotalThreads / tempThreadsNormalized; if (tempBlockThreads == 0) { tempThreads = 1; tempBlockThreads = tempTotalThreads; } if (tempBlockThreads > NUM_MT_CODER_THREADS_MAX) tempBlockThreads = NUM_MT_CODER_THREADS_MAX; } else if (tempThreads <= 0) { tempThreads = tempTotalThreads / tempBlockThreads; if (tempThreads == 0) tempThreads = 1; } else { tempTotalThreads = tempThreadsNormalized * tempBlockThreads; } mLzmaProps.mNumThreads = tempThreads; mNumBlockThreads = tempBlockThreads; mNumTotalThreads = tempTotalThreads; mLzmaProps.LzmaEncProps_Normalize(); if (mBlockSize == 0) { uint dictSize = mLzmaProps.mDictSize; long blockSize = (long)dictSize << 2; const uint kMinSize = 1 << 20; const uint kMaxSize = 1 << 28; if (blockSize < kMinSize) blockSize = kMinSize; if (blockSize > kMaxSize) blockSize = kMaxSize; if (blockSize < dictSize) blockSize = dictSize; mBlockSize = blockSize; } }