4.48 beta

C/Compress/Branch/BranchTypes.h

@@ -27,7 +27,7 @@ typedef unsigned int UInt32;
 #ifdef _SZ_NO_INT_64
 typedef unsigned long UInt64;
 #else
-#ifdef _MSC_VER
+#if defined(_MSC_VER) || defined(__BORLANDC__)
 typedef unsigned __int64 UInt64;
 #else
 typedef unsigned long long int UInt64;
@@ -35,4 +35,17 @@ typedef unsigned long long int UInt64;
 #endif
 #endif
 
+/* #define _LZMA_NO_SYSTEM_SIZE_T */
+/* You can use it, if you don't want <stddef.h> */
+
+#ifndef _7ZIP_SIZET_DEFINED
+#define _7ZIP_SIZET_DEFINED
+#ifdef _LZMA_NO_SYSTEM_SIZE_T
+typedef UInt32 SizeT;
+#else
+#include <stddef.h>
+typedef size_t SizeT;
+#endif
+#endif
+
 #endif

C/Compress/Branch/BranchX86.c

@@ -2,100 +2,83 @@
 
 #include "BranchX86.h"
 
-/*
-static int inline Test86MSByte(Byte b)
-{
-  return (b == 0 || b == 0xFF);
-}
-*/
 #define Test86MSByte(b) ((b) == 0 || (b) == 0xFF)
 
-const int kMaskToAllowedStatus[8] = {1, 1, 1, 0, 1, 0, 0, 0};
+const Byte kMaskToAllowedStatus[8] = {1, 1, 1, 0, 1, 0, 0, 0};
 const Byte kMaskToBitNumber[8] = {0, 1, 2, 2, 3, 3, 3, 3};
 
-/*
-void x86_Convert_Init(UInt32 *prevMask, UInt32 *prevPos)
+SizeT x86_Convert(Byte *buffer, SizeT endPos, UInt32 nowPos, UInt32 *prevMaskMix, int encoding)
 {
-  *prevMask = 0;
-  *prevPos = (UInt32)(-5);
-}
-*/
-
-UInt32 x86_Convert(Byte *buffer, UInt32 endPos, UInt32 nowPos, 
-    UInt32 *prevMask, UInt32 *prevPos, int encoding)
-{
-  UInt32 bufferPos = 0;
-  UInt32 limit;
-
+  SizeT bufferPos = 0, prevPosT;
+  UInt32 prevMask = *prevMaskMix & 0x7;
   if (endPos < 5)
     return 0;
-  
-  if (nowPos - *prevPos > 5)
-    *prevPos = nowPos - 5;
-  
-  limit = endPos - 5;
-  while(bufferPos <= limit)
+  nowPos += 5;
+  prevPosT = (SizeT)0 - 1;
+
+  for(;;)
   {
-    Byte b = buffer[bufferPos];
-    UInt32 offset;
-    if (b != 0xE8 && b != 0xE9)
-    {
-      bufferPos++;
-      continue;
-    }
-    offset = (nowPos + bufferPos - *prevPos);
-    *prevPos = (nowPos + bufferPos);
-    if (offset > 5)
-      *prevMask = 0;
+    Byte *p = buffer + bufferPos;
+    Byte *limit = buffer + endPos - 4;
+    for (; p < limit; p++)
+      if ((*p & 0xFE) == 0xE8)
+        break;
+    bufferPos = (SizeT)(p - buffer);
+    if (p >= limit)
+      break;
+    prevPosT = bufferPos - prevPosT;
+    if (prevPosT > 3)
+      prevMask = 0;
     else
     {
-      UInt32 i;
-      for (i = 0; i < offset; i++)
+      prevMask = (prevMask << ((int)prevPosT - 1)) & 0x7;
+      if (prevMask != 0)
       {
-        *prevMask &= 0x77;
-        *prevMask <<= 1;
+        Byte b = p[4 - kMaskToBitNumber[prevMask]];
+        if (!kMaskToAllowedStatus[prevMask] || Test86MSByte(b))
+        {
+          prevPosT = bufferPos;
+          prevMask = ((prevMask << 1) & 0x7) | 1;
+          bufferPos++;
+          continue;
+        }
       }
     }
-    b = buffer[bufferPos + 4];
-    if (Test86MSByte(b) && kMaskToAllowedStatus[(*prevMask >> 1) & 0x7] && 
-      (*prevMask >> 1) < 0x10)
+    prevPosT = bufferPos;
+
+    if (Test86MSByte(p[4]))
     {
-      UInt32 src = 
-        ((UInt32)(b) << 24) |
-        ((UInt32)(buffer[bufferPos + 3]) << 16) |
-        ((UInt32)(buffer[bufferPos + 2]) << 8) |
-        (buffer[bufferPos + 1]);
-      
+      UInt32 src = ((UInt32)p[4] << 24) | ((UInt32)p[3] << 16) | ((UInt32)p[2] << 8) | ((UInt32)p[1]);
       UInt32 dest;
       for (;;)
       {
-        UInt32 index;
+        Byte b;
+        int index;
         if (encoding)
-          dest = (nowPos + bufferPos + 5) + src;
+          dest = (nowPos + (UInt32)bufferPos) + src;
         else
-          dest = src - (nowPos + bufferPos + 5);
-        if (*prevMask == 0)
+          dest = src - (nowPos + (UInt32)bufferPos);
+        if (prevMask == 0)
           break;
-        index = kMaskToBitNumber[*prevMask >> 1];
-        b = (Byte)(dest >> (24 - index * 8));
+        index = kMaskToBitNumber[prevMask] * 8;
+        b = (Byte)(dest >> (24 - index));
         if (!Test86MSByte(b))
           break;
-        src = dest ^ ((1 << (32 - index * 8)) - 1);
+        src = dest ^ ((1 << (32 - index)) - 1);
       }
-      buffer[bufferPos + 4] = (Byte)(~(((dest >> 24) & 1) - 1));
-      buffer[bufferPos + 3] = (Byte)(dest >> 16);
-      buffer[bufferPos + 2] = (Byte)(dest >> 8);
-      buffer[bufferPos + 1] = (Byte)dest;
+      p[4] = (Byte)(~(((dest >> 24) & 1) - 1));
+      p[3] = (Byte)(dest >> 16);
+      p[2] = (Byte)(dest >> 8);
+      p[1] = (Byte)dest;
       bufferPos += 5;
-      *prevMask = 0;
     }
     else
     {
+      prevMask = ((prevMask << 1) & 0x7) | 1;
       bufferPos++;
-      *prevMask |= 1;
-      if (Test86MSByte(b))
-        *prevMask |= 0x10;
     }
   }
+  prevPosT = bufferPos - prevPosT;
+  *prevMaskMix = ((prevPosT > 3) ? 0 : ((prevMask << ((int)prevPosT - 1)) & 0x7));
   return bufferPos;
 }

C/Compress/Branch/BranchX86.h

@@ -5,9 +5,8 @@
 
 #include "BranchTypes.h"
 
-#define x86_Convert_Init(prevMask, prevPos) { prevMask = 0; prevPos = (UInt32)(-5); }
+#define x86_Convert_Init(state) { state = 0; }
 
-UInt32 x86_Convert(Byte *buffer, UInt32 endPos, UInt32 nowPos, 
-    UInt32 *prevMask, UInt32 *prevPos, int encoding);
+SizeT x86_Convert(Byte *buffer, SizeT endPos, UInt32 nowPos, UInt32 *state, int encoding);
 
 #endif

C/Compress/Branch/BranchX86_2.c

@@ -0,0 +1,135 @@
+// BranchX86_2.c
+
+#include "BranchX86_2.h"
+
+#include "../../Alloc.h"
+
+#ifdef _LZMA_PROB32
+#define CProb UInt32
+#else
+#define CProb UInt16
+#endif
+
+#define IsJcc(b0, b1) ((b0) == 0x0F && ((b1) & 0xF0) == 0x80)
+#define IsJ(b0, b1) ((b1 & 0xFE) == 0xE8 || IsJcc(b0, b1))
+
+#define kNumTopBits 24
+#define kTopValue ((UInt32)1 << kNumTopBits)
+
+#define kNumBitModelTotalBits 11
+#define kBitModelTotal (1 << kNumBitModelTotalBits)
+#define kNumMoveBits 5
+
+#define RC_READ_BYTE (*Buffer++)
+
+#define RC_INIT2 Code = 0; Range = 0xFFFFFFFF; \
+  { int i; for(i = 0; i < 5; i++) { RC_TEST; Code = (Code << 8) | RC_READ_BYTE; }}
+
+#define RC_TEST { if (Buffer == BufferLim) return BCJ2_RESULT_DATA_ERROR; }
+
+#define RC_INIT(buffer, bufferSize) Buffer = buffer; BufferLim = buffer + bufferSize; RC_INIT2
+ 
+#define RC_NORMALIZE if (Range < kTopValue) { RC_TEST; Range <<= 8; Code = (Code << 8) | RC_READ_BYTE; }
+
+#define IfBit0(p) RC_NORMALIZE; bound = (Range >> kNumBitModelTotalBits) * *(p); if (Code < bound)
+#define UpdateBit0(p) Range = bound; *(p) += (kBitModelTotal - *(p)) >> kNumMoveBits;
+#define UpdateBit1(p) Range -= bound; Code -= bound; *(p) -= (*(p)) >> kNumMoveBits;
+// #define UpdateBit0(p) Range = bound; *(p) = (CProb)(*(p) + ((kBitModelTotal - *(p)) >> kNumMoveBits));
+// #define UpdateBit1(p) Range -= bound; Code -= bound; *(p) = (CProb)(*(p) - (*(p) >> kNumMoveBits));
+
+int x86_2_Decode(
+    const Byte *buf0, SizeT size0, 
+    const Byte *buf1, SizeT size1, 
+    const Byte *buf2, SizeT size2, 
+    const Byte *buf3, SizeT size3, 
+    Byte *outBuf, SizeT outSize)
+{
+  CProb p[256 + 2];
+  SizeT inPos = 0, outPos = 0;
+
+  const Byte *Buffer, *BufferLim;
+  UInt32 Range, Code;
+  Byte prevByte = 0;
+
+  unsigned int i;
+  for (i = 0; i < sizeof(p) / sizeof(p[0]); i++)
+    p[i] = kBitModelTotal >> 1; 
+  RC_INIT(buf3, size3);
+
+  if (outSize == 0)
+    return BCJ2_RESULT_OK;
+
+  for (;;)
+  {
+    Byte b;
+    CProb *prob;
+    UInt32 bound;
+
+    SizeT limit = size0 - inPos;
+    if (outSize - outPos < limit)
+      limit = outSize - outPos;
+    while (limit != 0)
+    {
+      Byte b = buf0[inPos];
+      outBuf[outPos++] = b;
+      if (IsJ(prevByte, b))
+        break;
+      inPos++;
+      prevByte = b;
+      limit--;
+    }
+
+    if (limit == 0 || outPos == outSize)
+      break;
+
+    b = buf0[inPos++];
+
+    if (b == 0xE8)
+      prob = p + prevByte;
+    else if (b == 0xE9)
+      prob = p + 256;
+    else
+      prob = p + 257;
+
+    IfBit0(prob)
+    {
+      UpdateBit0(prob)
+      prevByte = b;
+    }
+    else
+    {
+      UInt32 dest;
+      const Byte *v;
+      UpdateBit1(prob)
+      if (b == 0xE8)
+      {
+        v = buf1;
+        if (size1 < 4)
+          return BCJ2_RESULT_DATA_ERROR;
+        buf1 += 4;
+        size1 -= 4;
+      }
+      else
+      {
+        v = buf2;
+        if (size2 < 4)
+          return BCJ2_RESULT_DATA_ERROR;
+        buf2 += 4;
+        size2 -= 4;
+      }
+      dest = (((UInt32)v[0] << 24) | ((UInt32)v[1] << 16) | 
+          ((UInt32)v[2] << 8) | ((UInt32)v[3])) - ((UInt32)outPos + 4);
+      outBuf[outPos++] = (Byte)dest;
+      if (outPos == outSize)
+        break;
+      outBuf[outPos++] = (Byte)(dest >> 8);
+      if (outPos == outSize)
+        break;
+      outBuf[outPos++] = (Byte)(dest >> 16);
+      if (outPos == outSize)
+        break;
+      outBuf[outPos++] = prevByte = (Byte)(dest >> 24);
+    }
+  }
+  return (outPos == outSize) ? BCJ2_RESULT_OK : BCJ2_RESULT_DATA_ERROR;
+}

C/Compress/Branch/BranchX86_2.h

@@ -0,0 +1,28 @@
+// BranchX86_2.h
+
+#ifndef __BRANCHX86_2_H
+#define __BRANCHX86_2_H
+
+#include "BranchTypes.h"
+
+#define BCJ2_RESULT_OK 0
+#define BCJ2_RESULT_DATA_ERROR 1
+
+/*
+Conditions:
+  outSize <= FullOutputSize, 
+  where FullOutputSize is full size of output stream of x86_2 filter.
+
+If buf0 overlaps outBuf, there are two required conditions:
+  1) (buf0 >= outBuf)
+  2) (buf0 + size0 >= outBuf + FullOutputSize).
+*/
+
+int x86_2_Decode(
+    const Byte *buf0, SizeT size0, 
+    const Byte *buf1, SizeT size1, 
+    const Byte *buf2, SizeT size2, 
+    const Byte *buf3, SizeT size3, 
+    Byte *outBuf, SizeT outSize);
+
+#endif

C/Compress/Lzma/LzmaStateDecode.c

@@ -227,7 +227,7 @@ int LzmaDecode(
   else
     previousByte = dictionary[dictionaryPos - 1];
 
-  while(1)
+  for (;;)
   {
     int bufferPos = (int)(Buffer - vs->Buffer);
     if (BufferSize - bufferPos < kRequiredInBufferSize)

C/Compress/Lzma/LzmaTypes.h

@@ -29,16 +29,16 @@ typedef unsigned int UInt32;
 #endif
 #endif 
 
-/* #define _LZMA_SYSTEM_SIZE_T */
-/* Use system's size_t. You can use it to enable 64-bit sizes supporting */
+/* #define _LZMA_NO_SYSTEM_SIZE_T */
+/* You can use it, if you don't want <stddef.h> */
 
 #ifndef _7ZIP_SIZET_DEFINED
 #define _7ZIP_SIZET_DEFINED
-#ifdef _LZMA_SYSTEM_SIZE_T
+#ifdef _LZMA_NO_SYSTEM_SIZE_T
+typedef UInt32 SizeT;
+#else
 #include <stddef.h>
 typedef size_t SizeT;
-#else
-typedef UInt32 SizeT;
 #endif
 #endif