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-rwxr-xr-xC/Lzma2Enc.c477
1 files changed, 477 insertions, 0 deletions
diff --git a/C/Lzma2Enc.c b/C/Lzma2Enc.c
new file mode 100755
index 0000000..35f6ed7
--- /dev/null
+++ b/C/Lzma2Enc.c
@@ -0,0 +1,477 @@
+/* Lzma2Enc.c -- LZMA2 Encoder
+2010-09-24 : Igor Pavlov : Public domain */
+
+/* #include <stdio.h> */
+#include <string.h>
+
+/* #define _7ZIP_ST */
+
+#include "Lzma2Enc.h"
+
+#ifndef _7ZIP_ST
+#include "MtCoder.h"
+#else
+#define NUM_MT_CODER_THREADS_MAX 1
+#endif
+
+#define LZMA2_CONTROL_LZMA (1 << 7)
+#define LZMA2_CONTROL_COPY_NO_RESET 2
+#define LZMA2_CONTROL_COPY_RESET_DIC 1
+#define LZMA2_CONTROL_EOF 0
+
+#define LZMA2_LCLP_MAX 4
+
+#define LZMA2_DIC_SIZE_FROM_PROP(p) (((UInt32)2 | ((p) & 1)) << ((p) / 2 + 11))
+
+#define LZMA2_PACK_SIZE_MAX (1 << 16)
+#define LZMA2_COPY_CHUNK_SIZE LZMA2_PACK_SIZE_MAX
+#define LZMA2_UNPACK_SIZE_MAX (1 << 21)
+#define LZMA2_KEEP_WINDOW_SIZE LZMA2_UNPACK_SIZE_MAX
+
+#define LZMA2_CHUNK_SIZE_COMPRESSED_MAX ((1 << 16) + 16)
+
+
+#define PRF(x) /* x */
+
+/* ---------- CLzma2EncInt ---------- */
+
+typedef struct
+{
+ CLzmaEncHandle enc;
+ UInt64 srcPos;
+ Byte props;
+ Bool needInitState;
+ Bool needInitProp;
+} CLzma2EncInt;
+
+static SRes Lzma2EncInt_Init(CLzma2EncInt *p, const CLzma2EncProps *props)
+{
+ Byte propsEncoded[LZMA_PROPS_SIZE];
+ SizeT propsSize = LZMA_PROPS_SIZE;
+ RINOK(LzmaEnc_SetProps(p->enc, &props->lzmaProps));
+ RINOK(LzmaEnc_WriteProperties(p->enc, propsEncoded, &propsSize));
+ p->srcPos = 0;
+ p->props = propsEncoded[0];
+ p->needInitState = True;
+ p->needInitProp = True;
+ return SZ_OK;
+}
+
+SRes LzmaEnc_PrepareForLzma2(CLzmaEncHandle pp, ISeqInStream *inStream, UInt32 keepWindowSize,
+ ISzAlloc *alloc, ISzAlloc *allocBig);
+SRes LzmaEnc_MemPrepare(CLzmaEncHandle pp, const Byte *src, SizeT srcLen,
+ UInt32 keepWindowSize, ISzAlloc *alloc, ISzAlloc *allocBig);
+SRes LzmaEnc_CodeOneMemBlock(CLzmaEncHandle pp, Bool reInit,
+ Byte *dest, size_t *destLen, UInt32 desiredPackSize, UInt32 *unpackSize);
+const Byte *LzmaEnc_GetCurBuf(CLzmaEncHandle pp);
+void LzmaEnc_Finish(CLzmaEncHandle pp);
+void LzmaEnc_SaveState(CLzmaEncHandle pp);
+void LzmaEnc_RestoreState(CLzmaEncHandle pp);
+
+
+static SRes Lzma2EncInt_EncodeSubblock(CLzma2EncInt *p, Byte *outBuf,
+ size_t *packSizeRes, ISeqOutStream *outStream)
+{
+ size_t packSizeLimit = *packSizeRes;
+ size_t packSize = packSizeLimit;
+ UInt32 unpackSize = LZMA2_UNPACK_SIZE_MAX;
+ unsigned lzHeaderSize = 5 + (p->needInitProp ? 1 : 0);
+ Bool useCopyBlock;
+ SRes res;
+
+ *packSizeRes = 0;
+ if (packSize < lzHeaderSize)
+ return SZ_ERROR_OUTPUT_EOF;
+ packSize -= lzHeaderSize;
+
+ LzmaEnc_SaveState(p->enc);
+ res = LzmaEnc_CodeOneMemBlock(p->enc, p->needInitState,
+ outBuf + lzHeaderSize, &packSize, LZMA2_PACK_SIZE_MAX, &unpackSize);
+
+ PRF(printf("\npackSize = %7d unpackSize = %7d ", packSize, unpackSize));
+
+ if (unpackSize == 0)
+ return res;
+
+ if (res == SZ_OK)
+ useCopyBlock = (packSize + 2 >= unpackSize || packSize > (1 << 16));
+ else
+ {
+ if (res != SZ_ERROR_OUTPUT_EOF)
+ return res;
+ res = SZ_OK;
+ useCopyBlock = True;
+ }
+
+ if (useCopyBlock)
+ {
+ size_t destPos = 0;
+ PRF(printf("################# COPY "));
+ while (unpackSize > 0)
+ {
+ UInt32 u = (unpackSize < LZMA2_COPY_CHUNK_SIZE) ? unpackSize : LZMA2_COPY_CHUNK_SIZE;
+ if (packSizeLimit - destPos < u + 3)
+ return SZ_ERROR_OUTPUT_EOF;
+ outBuf[destPos++] = (Byte)(p->srcPos == 0 ? LZMA2_CONTROL_COPY_RESET_DIC : LZMA2_CONTROL_COPY_NO_RESET);
+ outBuf[destPos++] = (Byte)((u - 1) >> 8);
+ outBuf[destPos++] = (Byte)(u - 1);
+ memcpy(outBuf + destPos, LzmaEnc_GetCurBuf(p->enc) - unpackSize, u);
+ unpackSize -= u;
+ destPos += u;
+ p->srcPos += u;
+ if (outStream)
+ {
+ *packSizeRes += destPos;
+ if (outStream->Write(outStream, outBuf, destPos) != destPos)
+ return SZ_ERROR_WRITE;
+ destPos = 0;
+ }
+ else
+ *packSizeRes = destPos;
+ /* needInitState = True; */
+ }
+ LzmaEnc_RestoreState(p->enc);
+ return SZ_OK;
+ }
+ {
+ size_t destPos = 0;
+ UInt32 u = unpackSize - 1;
+ UInt32 pm = (UInt32)(packSize - 1);
+ unsigned mode = (p->srcPos == 0) ? 3 : (p->needInitState ? (p->needInitProp ? 2 : 1) : 0);
+
+ PRF(printf(" "));
+
+ outBuf[destPos++] = (Byte)(LZMA2_CONTROL_LZMA | (mode << 5) | ((u >> 16) & 0x1F));
+ outBuf[destPos++] = (Byte)(u >> 8);
+ outBuf[destPos++] = (Byte)u;
+ outBuf[destPos++] = (Byte)(pm >> 8);
+ outBuf[destPos++] = (Byte)pm;
+
+ if (p->needInitProp)
+ outBuf[destPos++] = p->props;
+
+ p->needInitProp = False;
+ p->needInitState = False;
+ destPos += packSize;
+ p->srcPos += unpackSize;
+
+ if (outStream)
+ if (outStream->Write(outStream, outBuf, destPos) != destPos)
+ return SZ_ERROR_WRITE;
+ *packSizeRes = destPos;
+ return SZ_OK;
+ }
+}
+
+/* ---------- Lzma2 Props ---------- */
+
+void Lzma2EncProps_Init(CLzma2EncProps *p)
+{
+ LzmaEncProps_Init(&p->lzmaProps);
+ p->numTotalThreads = -1;
+ p->numBlockThreads = -1;
+ p->blockSize = 0;
+}
+
+void Lzma2EncProps_Normalize(CLzma2EncProps *p)
+{
+ int t1, t1n, t2, t3;
+ {
+ CLzmaEncProps lzmaProps = p->lzmaProps;
+ LzmaEncProps_Normalize(&lzmaProps);
+ t1n = lzmaProps.numThreads;
+ }
+
+ t1 = p->lzmaProps.numThreads;
+ t2 = p->numBlockThreads;
+ t3 = p->numTotalThreads;
+
+ if (t2 > NUM_MT_CODER_THREADS_MAX)
+ t2 = NUM_MT_CODER_THREADS_MAX;
+
+ if (t3 <= 0)
+ {
+ if (t2 <= 0)
+ t2 = 1;
+ t3 = t1n * t2;
+ }
+ else if (t2 <= 0)
+ {
+ t2 = t3 / t1n;
+ if (t2 == 0)
+ {
+ t1 = 1;
+ t2 = t3;
+ }
+ if (t2 > NUM_MT_CODER_THREADS_MAX)
+ t2 = NUM_MT_CODER_THREADS_MAX;
+ }
+ else if (t1 <= 0)
+ {
+ t1 = t3 / t2;
+ if (t1 == 0)
+ t1 = 1;
+ }
+ else
+ t3 = t1n * t2;
+
+ p->lzmaProps.numThreads = t1;
+ p->numBlockThreads = t2;
+ p->numTotalThreads = t3;
+ LzmaEncProps_Normalize(&p->lzmaProps);
+
+ if (p->blockSize == 0)
+ {
+ UInt32 dictSize = p->lzmaProps.dictSize;
+ UInt64 blockSize = (UInt64)dictSize << 2;
+ const UInt32 kMinSize = (UInt32)1 << 20;
+ const UInt32 kMaxSize = (UInt32)1 << 28;
+ if (blockSize < kMinSize) blockSize = kMinSize;
+ if (blockSize > kMaxSize) blockSize = kMaxSize;
+ if (blockSize < dictSize) blockSize = dictSize;
+ p->blockSize = (size_t)blockSize;
+ }
+}
+
+static SRes Progress(ICompressProgress *p, UInt64 inSize, UInt64 outSize)
+{
+ return (p && p->Progress(p, inSize, outSize) != SZ_OK) ? SZ_ERROR_PROGRESS : SZ_OK;
+}
+
+/* ---------- Lzma2 ---------- */
+
+typedef struct
+{
+ Byte propEncoded;
+ CLzma2EncProps props;
+
+ Byte *outBuf;
+
+ ISzAlloc *alloc;
+ ISzAlloc *allocBig;
+
+ CLzma2EncInt coders[NUM_MT_CODER_THREADS_MAX];
+
+ #ifndef _7ZIP_ST
+ CMtCoder mtCoder;
+ #endif
+
+} CLzma2Enc;
+
+
+/* ---------- Lzma2EncThread ---------- */
+
+static SRes Lzma2Enc_EncodeMt1(CLzma2EncInt *p, CLzma2Enc *mainEncoder,
+ ISeqOutStream *outStream, ISeqInStream *inStream, ICompressProgress *progress)
+{
+ UInt64 packTotal = 0;
+ SRes res = SZ_OK;
+
+ if (mainEncoder->outBuf == 0)
+ {
+ mainEncoder->outBuf = (Byte *)IAlloc_Alloc(mainEncoder->alloc, LZMA2_CHUNK_SIZE_COMPRESSED_MAX);
+ if (mainEncoder->outBuf == 0)
+ return SZ_ERROR_MEM;
+ }
+ RINOK(Lzma2EncInt_Init(p, &mainEncoder->props));
+ RINOK(LzmaEnc_PrepareForLzma2(p->enc, inStream, LZMA2_KEEP_WINDOW_SIZE,
+ mainEncoder->alloc, mainEncoder->allocBig));
+ for (;;)
+ {
+ size_t packSize = LZMA2_CHUNK_SIZE_COMPRESSED_MAX;
+ res = Lzma2EncInt_EncodeSubblock(p, mainEncoder->outBuf, &packSize, outStream);
+ if (res != SZ_OK)
+ break;
+ packTotal += packSize;
+ res = Progress(progress, p->srcPos, packTotal);
+ if (res != SZ_OK)
+ break;
+ if (packSize == 0)
+ break;
+ }
+ LzmaEnc_Finish(p->enc);
+ if (res == SZ_OK)
+ {
+ Byte b = 0;
+ if (outStream->Write(outStream, &b, 1) != 1)
+ return SZ_ERROR_WRITE;
+ }
+ return res;
+}
+
+#ifndef _7ZIP_ST
+
+typedef struct
+{
+ IMtCoderCallback funcTable;
+ CLzma2Enc *lzma2Enc;
+} CMtCallbackImp;
+
+static SRes MtCallbackImp_Code(void *pp, unsigned index, Byte *dest, size_t *destSize,
+ const Byte *src, size_t srcSize, int finished)
+{
+ CMtCallbackImp *imp = (CMtCallbackImp *)pp;
+ CLzma2Enc *mainEncoder = imp->lzma2Enc;
+ CLzma2EncInt *p = &mainEncoder->coders[index];
+
+ SRes res = SZ_OK;
+ {
+ size_t destLim = *destSize;
+ *destSize = 0;
+
+ if (srcSize != 0)
+ {
+ RINOK(Lzma2EncInt_Init(p, &mainEncoder->props));
+
+ RINOK(LzmaEnc_MemPrepare(p->enc, src, srcSize, LZMA2_KEEP_WINDOW_SIZE,
+ mainEncoder->alloc, mainEncoder->allocBig));
+
+ while (p->srcPos < srcSize)
+ {
+ size_t packSize = destLim - *destSize;
+ res = Lzma2EncInt_EncodeSubblock(p, dest + *destSize, &packSize, NULL);
+ if (res != SZ_OK)
+ break;
+ *destSize += packSize;
+
+ if (packSize == 0)
+ {
+ res = SZ_ERROR_FAIL;
+ break;
+ }
+
+ if (MtProgress_Set(&mainEncoder->mtCoder.mtProgress, index, p->srcPos, *destSize) != SZ_OK)
+ {
+ res = SZ_ERROR_PROGRESS;
+ break;
+ }
+ }
+ LzmaEnc_Finish(p->enc);
+ if (res != SZ_OK)
+ return res;
+ }
+ if (finished)
+ {
+ if (*destSize == destLim)
+ return SZ_ERROR_OUTPUT_EOF;
+ dest[(*destSize)++] = 0;
+ }
+ }
+ return res;
+}
+
+#endif
+
+/* ---------- Lzma2Enc ---------- */
+
+CLzma2EncHandle Lzma2Enc_Create(ISzAlloc *alloc, ISzAlloc *allocBig)
+{
+ CLzma2Enc *p = (CLzma2Enc *)alloc->Alloc(alloc, sizeof(CLzma2Enc));
+ if (p == 0)
+ return NULL;
+ Lzma2EncProps_Init(&p->props);
+ Lzma2EncProps_Normalize(&p->props);
+ p->outBuf = 0;
+ p->alloc = alloc;
+ p->allocBig = allocBig;
+ {
+ unsigned i;
+ for (i = 0; i < NUM_MT_CODER_THREADS_MAX; i++)
+ p->coders[i].enc = 0;
+ }
+ #ifndef _7ZIP_ST
+ MtCoder_Construct(&p->mtCoder);
+ #endif
+
+ return p;
+}
+
+void Lzma2Enc_Destroy(CLzma2EncHandle pp)
+{
+ CLzma2Enc *p = (CLzma2Enc *)pp;
+ unsigned i;
+ for (i = 0; i < NUM_MT_CODER_THREADS_MAX; i++)
+ {
+ CLzma2EncInt *t = &p->coders[i];
+ if (t->enc)
+ {
+ LzmaEnc_Destroy(t->enc, p->alloc, p->allocBig);
+ t->enc = 0;
+ }
+ }
+
+ #ifndef _7ZIP_ST
+ MtCoder_Destruct(&p->mtCoder);
+ #endif
+
+ IAlloc_Free(p->alloc, p->outBuf);
+ IAlloc_Free(p->alloc, pp);
+}
+
+SRes Lzma2Enc_SetProps(CLzma2EncHandle pp, const CLzma2EncProps *props)
+{
+ CLzma2Enc *p = (CLzma2Enc *)pp;
+ CLzmaEncProps lzmaProps = props->lzmaProps;
+ LzmaEncProps_Normalize(&lzmaProps);
+ if (lzmaProps.lc + lzmaProps.lp > LZMA2_LCLP_MAX)
+ return SZ_ERROR_PARAM;
+ p->props = *props;
+ Lzma2EncProps_Normalize(&p->props);
+ return SZ_OK;
+}
+
+Byte Lzma2Enc_WriteProperties(CLzma2EncHandle pp)
+{
+ CLzma2Enc *p = (CLzma2Enc *)pp;
+ unsigned i;
+ UInt32 dicSize = LzmaEncProps_GetDictSize(&p->props.lzmaProps);
+ for (i = 0; i < 40; i++)
+ if (dicSize <= LZMA2_DIC_SIZE_FROM_PROP(i))
+ break;
+ return (Byte)i;
+}
+
+SRes Lzma2Enc_Encode(CLzma2EncHandle pp,
+ ISeqOutStream *outStream, ISeqInStream *inStream, ICompressProgress *progress)
+{
+ CLzma2Enc *p = (CLzma2Enc *)pp;
+ int i;
+
+ for (i = 0; i < p->props.numBlockThreads; i++)
+ {
+ CLzma2EncInt *t = &p->coders[i];
+ if (t->enc == NULL)
+ {
+ t->enc = LzmaEnc_Create(p->alloc);
+ if (t->enc == NULL)
+ return SZ_ERROR_MEM;
+ }
+ }
+
+ #ifndef _7ZIP_ST
+ if (p->props.numBlockThreads <= 1)
+ #endif
+ return Lzma2Enc_EncodeMt1(&p->coders[0], p, outStream, inStream, progress);
+
+ #ifndef _7ZIP_ST
+
+ {
+ CMtCallbackImp mtCallback;
+
+ mtCallback.funcTable.Code = MtCallbackImp_Code;
+ mtCallback.lzma2Enc = p;
+
+ p->mtCoder.progress = progress;
+ p->mtCoder.inStream = inStream;
+ p->mtCoder.outStream = outStream;
+ p->mtCoder.alloc = p->alloc;
+ p->mtCoder.mtCallback = &mtCallback.funcTable;
+
+ p->mtCoder.blockSize = p->props.blockSize;
+ p->mtCoder.destBlockSize = p->props.blockSize + (p->props.blockSize >> 10) + 16;
+ p->mtCoder.numThreads = p->props.numBlockThreads;
+
+ return MtCoder_Code(&p->mtCoder);
+ }
+ #endif
+}