Upgrading lzma_sdk to version 9.20.

third_party/lzma_sdk/C/XzEnc.c

+/* XzEnc.c -- Xz Encode
+2009-06-04 : Igor Pavlov : Public domain */
+
+#include <stdlib.h>
+#include <string.h>
+
+#include "7zCrc.h"
+#include "Alloc.h"
+#include "Bra.h"
+#include "CpuArch.h"
+#ifdef USE_SUBBLOCK
+#include "SbEnc.h"
+#endif
+
+#include "XzEnc.h"
+
+static void *SzBigAlloc(void *p, size_t size) { p = p; return BigAlloc(size); }
+static void SzBigFree(void *p, void *address) { p = p; BigFree(address); }
+static ISzAlloc g_BigAlloc = { SzBigAlloc, SzBigFree };
+
+static void *SzAlloc(void *p, size_t size) { p = p; return MyAlloc(size); }
+static void SzFree(void *p, void *address) { p = p; MyFree(address); }
+static ISzAlloc g_Alloc = { SzAlloc, SzFree };
+
+#define XzBlock_ClearFlags(p)       (p)->flags = 0;
+#define XzBlock_SetNumFilters(p, n) (p)->flags |= ((n) - 1);
+#define XzBlock_SetHasPackSize(p)   (p)->flags |= XZ_BF_PACK_SIZE;
+#define XzBlock_SetHasUnpackSize(p) (p)->flags |= XZ_BF_UNPACK_SIZE;
+
+static SRes WriteBytes(ISeqOutStream *s, const void *buf, UInt32 size)
+{
+  return (s->Write(s, buf, size) == size) ? SZ_OK : SZ_ERROR_WRITE;
+}
+
+static SRes WriteBytesAndCrc(ISeqOutStream *s, const void *buf, UInt32 size, UInt32 *crc)
+{
+  *crc = CrcUpdate(*crc, buf, size);
+  return WriteBytes(s, buf, size);
+}
+
+SRes Xz_WriteHeader(CXzStreamFlags f, ISeqOutStream *s)
+{
+  UInt32 crc;
+  Byte header[XZ_STREAM_HEADER_SIZE];
+  memcpy(header, XZ_SIG, XZ_SIG_SIZE);
+  header[XZ_SIG_SIZE] = (Byte)(f >> 8);
+  header[XZ_SIG_SIZE + 1] = (Byte)(f & 0xFF);
+  crc = CrcCalc(header + XZ_SIG_SIZE, XZ_STREAM_FLAGS_SIZE);
+  SetUi32(header + XZ_SIG_SIZE + XZ_STREAM_FLAGS_SIZE, crc);
+  return WriteBytes(s, header, XZ_STREAM_HEADER_SIZE);
+}
+
+SRes XzBlock_WriteHeader(const CXzBlock *p, ISeqOutStream *s)
+{
+  Byte header[XZ_BLOCK_HEADER_SIZE_MAX];
+
+  unsigned pos = 1;
+  int numFilters, i;
+  header[pos++] = p->flags;
+
+  if (XzBlock_HasPackSize(p)) pos += Xz_WriteVarInt(header + pos, p->packSize);
+  if (XzBlock_HasUnpackSize(p)) pos += Xz_WriteVarInt(header + pos, p->unpackSize);
+  numFilters = XzBlock_GetNumFilters(p);
+  for (i = 0; i < numFilters; i++)
+  {
+    const CXzFilter *f = &p->filters[i];
+    pos += Xz_WriteVarInt(header + pos, f->id);
+    pos += Xz_WriteVarInt(header + pos, f->propsSize);
+    memcpy(header + pos, f->props, f->propsSize);
+    pos += f->propsSize;
+  }
+  while((pos & 3) != 0)
+    header[pos++] = 0;
+  header[0] = (Byte)(pos >> 2);
+  SetUi32(header + pos, CrcCalc(header, pos));
+  return WriteBytes(s, header, pos + 4);
+}
+
+SRes Xz_WriteFooter(CXzStream *p, ISeqOutStream *s)
+{
+  Byte buf[32];
+  UInt64 globalPos;
+  {
+    UInt32 crc = CRC_INIT_VAL;
+    unsigned pos = 1 + Xz_WriteVarInt(buf + 1, p->numBlocks);
+    size_t i;
+
+    globalPos = pos;
+    buf[0] = 0;
+    RINOK(WriteBytesAndCrc(s, buf, pos, &crc));
+    for (i = 0; i < p->numBlocks; i++)
+    {
+      const CXzBlockSizes *block = &p->blocks[i];
+      pos = Xz_WriteVarInt(buf, block->totalSize);
+      pos += Xz_WriteVarInt(buf + pos, block->unpackSize);
+      globalPos += pos;
+      RINOK(WriteBytesAndCrc(s, buf, pos, &crc));
+    }
+    pos = ((unsigned)globalPos & 3);
+    if (pos != 0)
+    {
+      buf[0] = buf[1] = buf[2] = 0;
+      RINOK(WriteBytesAndCrc(s, buf, 4 - pos, &crc));
+      globalPos += 4 - pos;
+    }
+    {
+      SetUi32(buf, CRC_GET_DIGEST(crc));
+      RINOK(WriteBytes(s, buf, 4));
+      globalPos += 4;
+    }
+  }
+
+  {
+    UInt32 indexSize = (UInt32)((globalPos >> 2) - 1);
+    SetUi32(buf + 4, indexSize);
+    buf[8] = (Byte)(p->flags >> 8);
+    buf[9] = (Byte)(p->flags & 0xFF);
+    SetUi32(buf, CrcCalc(buf + 4, 6));
+    memcpy(buf + 10, XZ_FOOTER_SIG, XZ_FOOTER_SIG_SIZE);
+    return WriteBytes(s, buf, 12);
+  }
+}
+
+SRes Xz_AddIndexRecord(CXzStream *p, UInt64 unpackSize, UInt64 totalSize, ISzAlloc *alloc)
+{
+  if (p->blocks == 0 || p->numBlocksAllocated == p->numBlocks)
+  {
+    size_t num = (p->numBlocks + 1) * 2;
+    size_t newSize = sizeof(CXzBlockSizes) * num;
+    CXzBlockSizes *blocks;
+    if (newSize / sizeof(CXzBlockSizes) != num)
+      return SZ_ERROR_MEM;
+    blocks = alloc->Alloc(alloc, newSize);
+    if (blocks == 0)
+      return SZ_ERROR_MEM;
+    if (p->numBlocks != 0)
+    {
+      memcpy(blocks, p->blocks, p->numBlocks * sizeof(CXzBlockSizes));
+      Xz_Free(p, alloc);
+    }
+    p->blocks = blocks;
+    p->numBlocksAllocated = num;
+  }
+  {
+    CXzBlockSizes *block = &p->blocks[p->numBlocks++];
+    block->totalSize = totalSize;
+    block->unpackSize = unpackSize;
+  }
+  return SZ_OK;
+}
+
+/* ---------- CSeqCheckInStream ---------- */
+
+typedef struct
+{
+  ISeqInStream p;
+  ISeqInStream *realStream;
+  UInt64 processed;
+  CXzCheck check;
+} CSeqCheckInStream;
+
+void SeqCheckInStream_Init(CSeqCheckInStream *p, int mode)
+{
+  p->processed = 0;
+  XzCheck_Init(&p->check, mode);
+}
+
+void SeqCheckInStream_GetDigest(CSeqCheckInStream *p, Byte *digest)
+{
+  XzCheck_Final(&p->check, digest);
+}
+
+static SRes SeqCheckInStream_Read(void *pp, void *data, size_t *size)
+{
+  CSeqCheckInStream *p = (CSeqCheckInStream *)pp;
+  SRes res = p->realStream->Read(p->realStream, data, size);
+  XzCheck_Update(&p->check, data, *size);
+  p->processed += *size;
+  return res;
+}
+
+/* ---------- CSeqSizeOutStream ---------- */
+
+typedef struct
+{
+  ISeqOutStream p;
+  ISeqOutStream *realStream;
+  UInt64 processed;
+} CSeqSizeOutStream;
+
+static size_t MyWrite(void *pp, const void *data, size_t size)
+{
+  CSeqSizeOutStream *p = (CSeqSizeOutStream *)pp;
+  size = p->realStream->Write(p->realStream, data, size);
+  p->processed += size;
+  return size;
+}
+
+/* ---------- CSeqInFilter ---------- */
+
+/*
+typedef struct _IFilter
+{
+  void *p;
+  void (*Free)(void *p, ISzAlloc *alloc);
+  SRes (*SetProps)(void *p, const Byte *props, size_t propSize, ISzAlloc *alloc);
+  void (*Init)(void *p);
+  size_t (*Filter)(void *p, Byte *data, SizeT destLen);
+} IFilter;
+
+#define FILT_BUF_SIZE (1 << 19)
+
+typedef struct
+{
+  ISeqInStream p;
+  ISeqInStream *realStream;
+  UInt32 x86State;
+  UInt32 ip;
+  UInt64 processed;
+  CXzCheck check;
+  Byte buf[FILT_BUF_SIZE];
+  UInt32 bufferPos;
+  UInt32 convertedPosBegin;
+  UInt32 convertedPosEnd;
+  IFilter *filter;
+} CSeqInFilter;
+
+static SRes SeqInFilter_Read(void *pp, void *data, size_t *size)
+{
+  CSeqInFilter *p = (CSeqInFilter *)pp;
+  size_t remSize = *size;
+  *size = 0;
+
+  while (remSize > 0)
+  {
+    int i;
+    if (p->convertedPosBegin != p->convertedPosEnd)
+    {
+      UInt32 sizeTemp = p->convertedPosEnd - p->convertedPosBegin;
+      if (remSize < sizeTemp)
+        sizeTemp = (UInt32)remSize;
+      memmove(data, p->buf + p->convertedPosBegin, sizeTemp);
+      p->convertedPosBegin += sizeTemp;
+      data = (void *)((Byte *)data + sizeTemp);
+      remSize -= sizeTemp;
+      *size += sizeTemp;
+      break;
+    }
+    for (i = 0; p->convertedPosEnd + i < p->bufferPos; i++)
+      p->buf[i] = p->buf[i + p->convertedPosEnd];
+    p->bufferPos = i;
+    p->convertedPosBegin = p->convertedPosEnd = 0;
+    {
+      size_t processedSizeTemp = FILT_BUF_SIZE - p->bufferPos;
+      RINOK(p->realStream->Read(p->realStream, p->buf + p->bufferPos, &processedSizeTemp));
+      p->bufferPos = p->bufferPos + (UInt32)processedSizeTemp;
+    }
+    p->convertedPosEnd = (UInt32)p->filter->Filter(p->filter->p, p->buf, p->bufferPos);
+    if (p->convertedPosEnd == 0)
+    {
+      if (p->bufferPos == 0)
+        break;
+      else
+      {
+        p->convertedPosEnd = p->bufferPos;
+        continue;
+      }
+    }
+    if (p->convertedPosEnd > p->bufferPos)
+    {
+      for (; p->bufferPos < p->convertedPosEnd; p->bufferPos++)
+        p->buf[p->bufferPos] = 0;
+      p->convertedPosEnd = (UInt32)p->filter->Filter(p->filter->p, p->buf, p->bufferPos);
+    }
+  }
+  return SZ_OK;
+}
+*/
+
+/*
+typedef struct
+{
+  ISeqInStream p;
+  ISeqInStream *realStream;
+  CMixCoder mixCoder;
+  Byte buf[FILT_BUF_SIZE];
+  UInt32 bufPos;
+  UInt32 bufSize;
+} CMixCoderSeqInStream;
+
+static SRes CMixCoderSeqInStream_Read(void *pp, void *data, size_t *size)
+{
+  CMixCoderSeqInStream *p = (CMixCoderSeqInStream *)pp;
+  SRes res = SZ_OK;
+  size_t remSize = *size;
+  *size = 0;
+  while (remSize > 0)
+  {
+    if (p->bufPos == p->bufSize)
+    {
+      size_t curSize;
+      p->bufPos = p->bufSize = 0;
+      if (*size != 0)
+        break;
+      curSize = FILT_BUF_SIZE;
+      RINOK(p->realStream->Read(p->realStream, p->buf, &curSize));
+      p->bufSize = (UInt32)curSize;
+    }
+    {
+      SizeT destLen = remSize;
+      SizeT srcLen = p->bufSize - p->bufPos;
+      res = MixCoder_Code(&p->mixCoder, data, &destLen, p->buf + p->bufPos, &srcLen, 0);
+      data = (void *)((Byte *)data + destLen);
+      remSize -= destLen;
+      *size += destLen;
+      p->bufPos += srcLen;
+    }
+  }
+  return res;
+}
+*/
+
+#ifdef USE_SUBBLOCK
+typedef struct
+{
+  ISeqInStream p;
+  CSubblockEnc sb;
+  UInt64 processed;
+} CSbEncInStream;
+
+void SbEncInStream_Init(CSbEncInStream *p)
+{
+  p->processed = 0;
+  SubblockEnc_Init(&p->sb);
+}
+
+static SRes SbEncInStream_Read(void *pp, void *data, size_t *size)
+{
+  CSbEncInStream *p = (CSbEncInStream *)pp;
+  SRes res = SubblockEnc_Read(&p->sb, data, size);
+  p->processed += *size;
+  return res;
+}
+#endif
+
+typedef struct
+{
+  /* CMixCoderSeqInStream inStream; */
+  CLzma2EncHandle lzma2;
+  #ifdef USE_SUBBLOCK
+  CSbEncInStream sb;
+  #endif
+  ISzAlloc *alloc;
+  ISzAlloc *bigAlloc;
+} CLzma2WithFilters;
+
+
+static void Lzma2WithFilters_Construct(CLzma2WithFilters *p, ISzAlloc *alloc, ISzAlloc *bigAlloc)
+{
+  p->alloc = alloc;
+  p->bigAlloc = bigAlloc;
+  p->lzma2 = NULL;
+  #ifdef USE_SUBBLOCK
+  p->sb.p.Read = SbEncInStream_Read;
+  SubblockEnc_Construct(&p->sb.sb, p->alloc);
+  #endif
+}
+
+static SRes Lzma2WithFilters_Create(CLzma2WithFilters *p)
+{
+  p->lzma2 = Lzma2Enc_Create(p->alloc, p->bigAlloc);
+  if (p->lzma2 == 0)
+    return SZ_ERROR_MEM;
+  return SZ_OK;
+}
+
+static void Lzma2WithFilters_Free(CLzma2WithFilters *p)
+{
+  #ifdef USE_SUBBLOCK
+  SubblockEnc_Free(&p->sb.sb);
+  #endif
+  if (p->lzma2)
+  {
+    Lzma2Enc_Destroy(p->lzma2);
+    p->lzma2 = NULL;
+  }
+}
+
+static SRes Xz_Compress(CXzStream *xz,
+    CLzma2WithFilters *lzmaf,
+    ISeqOutStream *outStream,
+    ISeqInStream *inStream,
+    const CLzma2EncProps *lzma2Props,
+    Bool useSubblock,
+    ICompressProgress *progress)
+{
+  xz->flags = XZ_CHECK_CRC32;
+
+  RINOK(Lzma2Enc_SetProps(lzmaf->lzma2, lzma2Props));
+  RINOK(Xz_WriteHeader(xz->flags, outStream));
+
+  {
+    CSeqCheckInStream checkInStream;
+    CSeqSizeOutStream seqSizeOutStream;
+    CXzBlock block;
+    int filterIndex = 0;
+    
+    XzBlock_ClearFlags(&block);
+    XzBlock_SetNumFilters(&block, 1 + (useSubblock ? 1 : 0));
+    
+    if (useSubblock)
+    {
+      CXzFilter *f = &block.filters[filterIndex++];
+      f->id = XZ_ID_Subblock;
+      f->propsSize = 0;
+    }
+
+    {
+      CXzFilter *f = &block.filters[filterIndex++];
+      f->id = XZ_ID_LZMA2;
+      f->propsSize = 1;
+      f->props[0] = Lzma2Enc_WriteProperties(lzmaf->lzma2);
+    }
+
+    seqSizeOutStream.p.Write = MyWrite;
+    seqSizeOutStream.realStream = outStream;
+    seqSizeOutStream.processed = 0;
+    
+    RINOK(XzBlock_WriteHeader(&block, &seqSizeOutStream.p));
+    
+    checkInStream.p.Read = SeqCheckInStream_Read;
+    checkInStream.realStream = inStream;
+    SeqCheckInStream_Init(&checkInStream, XzFlags_GetCheckType(xz->flags));
+    
+    #ifdef USE_SUBBLOCK
+    if (useSubblock)
+    {
+      lzmaf->sb.sb.inStream = &checkInStream.p;
+      SubblockEnc_Init(&lzmaf->sb.sb);
+    }
+    #endif
+    
+    {
+      UInt64 packPos = seqSizeOutStream.processed;
+      SRes res = Lzma2Enc_Encode(lzmaf->lzma2, &seqSizeOutStream.p,
+        #ifdef USE_SUBBLOCK
+        useSubblock ? &lzmaf->sb.p:
+        #endif
+        &checkInStream.p,
+        progress);
+      RINOK(res);
+      block.unpackSize = checkInStream.processed;
+      block.packSize = seqSizeOutStream.processed - packPos;
+    }
+
+    {
+      unsigned padSize = 0;
+      Byte buf[128];
+      while((((unsigned)block.packSize + padSize) & 3) != 0)
+        buf[padSize++] = 0;
+      SeqCheckInStream_GetDigest(&checkInStream, buf + padSize);
+      RINOK(WriteBytes(&seqSizeOutStream.p, buf, padSize + XzFlags_GetCheckSize(xz->flags)));
+      RINOK(Xz_AddIndexRecord(xz, block.unpackSize, seqSizeOutStream.processed - padSize, &g_Alloc));
+    }
+  }
+  return Xz_WriteFooter(xz, outStream);
+}
+
+SRes Xz_Encode(ISeqOutStream *outStream, ISeqInStream *inStream,
+    const CLzma2EncProps *lzma2Props, Bool useSubblock,
+    ICompressProgress *progress)
+{
+  SRes res;
+  CXzStream xz;
+  CLzma2WithFilters lzmaf;
+  Xz_Construct(&xz);
+  Lzma2WithFilters_Construct(&lzmaf, &g_Alloc, &g_BigAlloc);
+  res = Lzma2WithFilters_Create(&lzmaf);
+  if (res == SZ_OK)
+    res = Xz_Compress(&xz, &lzmaf, outStream, inStream,
+        lzma2Props, useSubblock, progress);
+  Lzma2WithFilters_Free(&lzmaf);
+  Xz_Free(&xz, &g_Alloc);
+  return res;
+}
+
+SRes Xz_EncodeEmpty(ISeqOutStream *outStream)
+{
+  SRes res;
+  CXzStream xz;
+  Xz_Construct(&xz);
+  res = Xz_WriteHeader(xz.flags, outStream);
+  if (res == SZ_OK)
+    res = Xz_WriteFooter(&xz, outStream);
+  Xz_Free(&xz, &g_Alloc);
+  return res;
+}