diff options
author | Stefan Reinauer <reinauer@chromium.org> | 2011-10-31 12:52:22 -0700 |
---|---|---|
committer | Peter Stuge <peter@stuge.se> | 2011-10-31 21:29:31 +0100 |
commit | 36c04e8a5c54b100a505650218419e112ccc266e (patch) | |
tree | a1fd897f11cea93105ad980967ca17110bfdbc88 /payloads/bayou/util/pbuilder/lzma/C/7zip/Compress/LZ/BinTree/BinTreeMain.h | |
parent | 1861ff739c6b2173332f9b53240d34e7cb5e051e (diff) |
Run dos2unix on bayou and remove white space at the end of lines.
Change-Id: If13d9a49ece2699885ae3e998173d3d44507b302
Signed-off-by: Stefan Reinauer <reinauer@google.com>
Reviewed-on: http://review.coreboot.org/362
Tested-by: build bot (Jenkins)
Reviewed-by: Peter Stuge <peter@stuge.se>
Diffstat (limited to 'payloads/bayou/util/pbuilder/lzma/C/7zip/Compress/LZ/BinTree/BinTreeMain.h')
-rw-r--r-- | payloads/bayou/util/pbuilder/lzma/C/7zip/Compress/LZ/BinTree/BinTreeMain.h | 1062 |
1 files changed, 531 insertions, 531 deletions
diff --git a/payloads/bayou/util/pbuilder/lzma/C/7zip/Compress/LZ/BinTree/BinTreeMain.h b/payloads/bayou/util/pbuilder/lzma/C/7zip/Compress/LZ/BinTree/BinTreeMain.h index 61d1121043..d47a03de90 100644 --- a/payloads/bayou/util/pbuilder/lzma/C/7zip/Compress/LZ/BinTree/BinTreeMain.h +++ b/payloads/bayou/util/pbuilder/lzma/C/7zip/Compress/LZ/BinTree/BinTreeMain.h @@ -1,531 +1,531 @@ -// BinTreeMain.h
-
-#include "../../../../Common/Defs.h"
-#include "../../../../Common/CRC.h"
-#include "../../../../Common/Alloc.h"
-
-#include "BinTree.h"
-
-// #include <xmmintrin.h>
-// It's for prefetch
-// But prefetch doesn't give big gain in K8.
-
-namespace BT_NAMESPACE {
-
-#ifdef HASH_ARRAY_2
- static const UInt32 kHash2Size = 1 << 10;
- #define kNumHashDirectBytes 0
- #ifdef HASH_ARRAY_3
- static const UInt32 kNumHashBytes = 4;
- static const UInt32 kHash3Size = 1 << 16;
- #else
- static const UInt32 kNumHashBytes = 3;
- #endif
- static const UInt32 kHashSize = 0;
- static const UInt32 kMinMatchCheck = kNumHashBytes;
- static const UInt32 kStartMaxLen = 1;
-#else
- #ifdef HASH_ZIP
- #define kNumHashDirectBytes 0
- static const UInt32 kNumHashBytes = 3;
- static const UInt32 kHashSize = 1 << 16;
- static const UInt32 kMinMatchCheck = kNumHashBytes;
- static const UInt32 kStartMaxLen = 1;
- #else
- #define kNumHashDirectBytes 2
- static const UInt32 kNumHashBytes = 2;
- static const UInt32 kHashSize = 1 << (8 * kNumHashBytes);
- static const UInt32 kMinMatchCheck = kNumHashBytes + 1;
- static const UInt32 kStartMaxLen = 1;
- #endif
-#endif
-
-#ifdef HASH_ARRAY_2
-#ifdef HASH_ARRAY_3
-static const UInt32 kHash3Offset = kHash2Size;
-#endif
-#endif
-
-static const UInt32 kFixHashSize = 0
- #ifdef HASH_ARRAY_2
- + kHash2Size
- #ifdef HASH_ARRAY_3
- + kHash3Size
- #endif
- #endif
- ;
-
-CMatchFinder::CMatchFinder():
- _hash(0)
-{
-}
-
-void CMatchFinder::FreeThisClassMemory()
-{
- BigFree(_hash);
- _hash = 0;
-}
-
-void CMatchFinder::FreeMemory()
-{
- FreeThisClassMemory();
- CLZInWindow::Free();
-}
-
-CMatchFinder::~CMatchFinder()
-{
- FreeMemory();
-}
-
-STDMETHODIMP CMatchFinder::Create(UInt32 historySize, UInt32 keepAddBufferBefore,
- UInt32 matchMaxLen, UInt32 keepAddBufferAfter)
-{
- if (historySize > kMaxValForNormalize - 256)
- {
- FreeMemory();
- return E_INVALIDARG;
- }
- _cutValue =
- #ifdef _HASH_CHAIN
- 8 + (matchMaxLen >> 2);
- #else
- 16 + (matchMaxLen >> 1);
- #endif
- UInt32 sizeReserv = (historySize + keepAddBufferBefore +
- matchMaxLen + keepAddBufferAfter) / 2 + 256;
- if (CLZInWindow::Create(historySize + keepAddBufferBefore,
- matchMaxLen + keepAddBufferAfter, sizeReserv))
- {
- _matchMaxLen = matchMaxLen;
- UInt32 newCyclicBufferSize = historySize + 1;
- if (_hash != 0 && newCyclicBufferSize == _cyclicBufferSize)
- return S_OK;
- FreeThisClassMemory();
- _cyclicBufferSize = newCyclicBufferSize; // don't change it
-
- UInt32 hs = kHashSize;
-
- #ifdef HASH_ARRAY_2
- hs = historySize - 1;
- hs |= (hs >> 1);
- hs |= (hs >> 2);
- hs |= (hs >> 4);
- hs |= (hs >> 8);
- hs >>= 1;
- hs |= 0xFFFF;
- if (hs > (1 << 24))
- {
- #ifdef HASH_ARRAY_3
- hs >>= 1;
- #else
- hs = (1 << 24) - 1;
- #endif
- }
- _hashMask = hs;
- hs++;
- #endif
- _hashSizeSum = hs + kFixHashSize;
- UInt32 numItems = _hashSizeSum + _cyclicBufferSize
- #ifndef _HASH_CHAIN
- * 2
- #endif
- ;
- size_t sizeInBytes = (size_t)numItems * sizeof(CIndex);
- if (sizeInBytes / sizeof(CIndex) != numItems)
- return E_OUTOFMEMORY;
- _hash = (CIndex *)BigAlloc(sizeInBytes);
- _son = _hash + _hashSizeSum;
- if (_hash != 0)
- return S_OK;
- }
- FreeMemory();
- return E_OUTOFMEMORY;
-}
-
-static const UInt32 kEmptyHashValue = 0;
-
-STDMETHODIMP CMatchFinder::SetStream(ISequentialInStream *stream)
-{
- CLZInWindow::SetStream(stream);
- return S_OK;
-}
-
-STDMETHODIMP CMatchFinder::Init()
-{
- RINOK(CLZInWindow::Init());
- for(UInt32 i = 0; i < _hashSizeSum; i++)
- _hash[i] = kEmptyHashValue;
- _cyclicBufferPos = 0;
- ReduceOffsets(-1);
- return S_OK;
-}
-
-STDMETHODIMP_(void) CMatchFinder::ReleaseStream()
-{
- // ReleaseStream();
-}
-
-#ifdef HASH_ARRAY_2
-#ifdef HASH_ARRAY_3
-
-#define HASH_CALC { \
- UInt32 temp = CCRC::Table[cur[0]] ^ cur[1]; \
- hash2Value = temp & (kHash2Size - 1); \
- hash3Value = (temp ^ (UInt32(cur[2]) << 8)) & (kHash3Size - 1); \
- hashValue = (temp ^ (UInt32(cur[2]) << 8) ^ (CCRC::Table[cur[3]] << 5)) & _hashMask; }
-
-#else // no HASH_ARRAY_3
-#define HASH_CALC { \
- UInt32 temp = CCRC::Table[cur[0]] ^ cur[1]; \
- hash2Value = temp & (kHash2Size - 1); \
- hashValue = (temp ^ (UInt32(cur[2]) << 8)) & _hashMask; }
-#endif // HASH_ARRAY_3
-#else // no HASH_ARRAY_2
-#ifdef HASH_ZIP
-inline UInt32 Hash(const Byte *pointer)
-{
- return ((UInt32(pointer[0]) << 8) ^ CCRC::Table[pointer[1]] ^ pointer[2]) & (kHashSize - 1);
-}
-#else // no HASH_ZIP
-inline UInt32 Hash(const Byte *pointer)
-{
- return pointer[0] ^ (UInt32(pointer[1]) << 8);
-}
-#endif // HASH_ZIP
-#endif // HASH_ARRAY_2
-
-STDMETHODIMP CMatchFinder::GetMatches(UInt32 *distances)
-{
- UInt32 lenLimit;
- if (_pos + _matchMaxLen <= _streamPos)
- lenLimit = _matchMaxLen;
- else
- {
- lenLimit = _streamPos - _pos;
- if(lenLimit < kMinMatchCheck)
- {
- distances[0] = 0;
- return MovePos();
- }
- }
-
- int offset = 1;
-
- UInt32 matchMinPos = (_pos > _cyclicBufferSize) ? (_pos - _cyclicBufferSize) : 0;
- const Byte *cur = _buffer + _pos;
-
- UInt32 maxLen = kStartMaxLen; // to avoid items for len < hashSize;
-
- #ifdef HASH_ARRAY_2
- UInt32 hash2Value;
- #ifdef HASH_ARRAY_3
- UInt32 hash3Value;
- #endif
- UInt32 hashValue;
- HASH_CALC;
- #else
- UInt32 hashValue = Hash(cur);
- #endif
-
- UInt32 curMatch = _hash[kFixHashSize + hashValue];
- #ifdef HASH_ARRAY_2
- UInt32 curMatch2 = _hash[hash2Value];
- #ifdef HASH_ARRAY_3
- UInt32 curMatch3 = _hash[kHash3Offset + hash3Value];
- #endif
- _hash[hash2Value] = _pos;
- if(curMatch2 > matchMinPos)
- if (_buffer[curMatch2] == cur[0])
- {
- distances[offset++] = maxLen = 2;
- distances[offset++] = _pos - curMatch2 - 1;
- }
-
- #ifdef HASH_ARRAY_3
- _hash[kHash3Offset + hash3Value] = _pos;
- if(curMatch3 > matchMinPos)
- if (_buffer[curMatch3] == cur[0])
- {
- if (curMatch3 == curMatch2)
- offset -= 2;
- distances[offset++] = maxLen = 3;
- distances[offset++] = _pos - curMatch3 - 1;
- curMatch2 = curMatch3;
- }
- #endif
- if (offset != 1 && curMatch2 == curMatch)
- {
- offset -= 2;
- maxLen = kStartMaxLen;
- }
- #endif
-
- _hash[kFixHashSize + hashValue] = _pos;
-
- CIndex *son = _son;
-
- #ifdef _HASH_CHAIN
- son[_cyclicBufferPos] = curMatch;
- #else
- CIndex *ptr0 = son + (_cyclicBufferPos << 1) + 1;
- CIndex *ptr1 = son + (_cyclicBufferPos << 1);
-
- UInt32 len0, len1;
- len0 = len1 = kNumHashDirectBytes;
- #endif
-
- #if kNumHashDirectBytes != 0
- if(curMatch > matchMinPos)
- {
- if (_buffer[curMatch + kNumHashDirectBytes] != cur[kNumHashDirectBytes])
- {
- distances[offset++] = maxLen = kNumHashDirectBytes;
- distances[offset++] = _pos - curMatch - 1;
- }
- }
- #endif
- UInt32 count = _cutValue;
- while(true)
- {
- if(curMatch <= matchMinPos || count-- == 0)
- {
- #ifndef _HASH_CHAIN
- *ptr0 = *ptr1 = kEmptyHashValue;
- #endif
- break;
- }
- UInt32 delta = _pos - curMatch;
- UInt32 cyclicPos = (delta <= _cyclicBufferPos) ?
- (_cyclicBufferPos - delta):
- (_cyclicBufferPos - delta + _cyclicBufferSize);
- CIndex *pair = son +
- #ifdef _HASH_CHAIN
- cyclicPos;
- #else
- (cyclicPos << 1);
- #endif
-
- // _mm_prefetch((const char *)pair, _MM_HINT_T0);
-
- const Byte *pb = _buffer + curMatch;
- UInt32 len =
- #ifdef _HASH_CHAIN
- kNumHashDirectBytes;
- if (pb[maxLen] == cur[maxLen])
- #else
- MyMin(len0, len1);
- #endif
- if (pb[len] == cur[len])
- {
- while(++len != lenLimit)
- if (pb[len] != cur[len])
- break;
- if (maxLen < len)
- {
- distances[offset++] = maxLen = len;
- distances[offset++] = delta - 1;
- if (len == lenLimit)
- {
- #ifndef _HASH_CHAIN
- *ptr1 = pair[0];
- *ptr0 = pair[1];
- #endif
- break;
- }
- }
- }
- #ifdef _HASH_CHAIN
- curMatch = *pair;
- #else
- if (pb[len] < cur[len])
- {
- *ptr1 = curMatch;
- ptr1 = pair + 1;
- curMatch = *ptr1;
- len1 = len;
- }
- else
- {
- *ptr0 = curMatch;
- ptr0 = pair;
- curMatch = *ptr0;
- len0 = len;
- }
- #endif
- }
- distances[0] = offset - 1;
- if (++_cyclicBufferPos == _cyclicBufferSize)
- _cyclicBufferPos = 0;
- RINOK(CLZInWindow::MovePos());
- if (_pos == kMaxValForNormalize)
- Normalize();
- return S_OK;
-}
-
-STDMETHODIMP CMatchFinder::Skip(UInt32 num)
-{
- do
- {
- #ifdef _HASH_CHAIN
- if (_streamPos - _pos < kNumHashBytes)
- {
- RINOK(MovePos());
- continue;
- }
- #else
- UInt32 lenLimit;
- if (_pos + _matchMaxLen <= _streamPos)
- lenLimit = _matchMaxLen;
- else
- {
- lenLimit = _streamPos - _pos;
- if(lenLimit < kMinMatchCheck)
- {
- RINOK(MovePos());
- continue;
- }
- }
- UInt32 matchMinPos = (_pos > _cyclicBufferSize) ? (_pos - _cyclicBufferSize) : 0;
- #endif
- const Byte *cur = _buffer + _pos;
-
- #ifdef HASH_ARRAY_2
- UInt32 hash2Value;
- #ifdef HASH_ARRAY_3
- UInt32 hash3Value;
- UInt32 hashValue;
- HASH_CALC;
- _hash[kHash3Offset + hash3Value] = _pos;
- #else
- UInt32 hashValue;
- HASH_CALC;
- #endif
- _hash[hash2Value] = _pos;
- #else
- UInt32 hashValue = Hash(cur);
- #endif
-
- UInt32 curMatch = _hash[kFixHashSize + hashValue];
- _hash[kFixHashSize + hashValue] = _pos;
-
- #ifdef _HASH_CHAIN
- _son[_cyclicBufferPos] = curMatch;
- #else
- CIndex *son = _son;
- CIndex *ptr0 = son + (_cyclicBufferPos << 1) + 1;
- CIndex *ptr1 = son + (_cyclicBufferPos << 1);
-
- UInt32 len0, len1;
- len0 = len1 = kNumHashDirectBytes;
- UInt32 count = _cutValue;
- while(true)
- {
- if(curMatch <= matchMinPos || count-- == 0)
- {
- *ptr0 = *ptr1 = kEmptyHashValue;
- break;
- }
-
- UInt32 delta = _pos - curMatch;
- UInt32 cyclicPos = (delta <= _cyclicBufferPos) ?
- (_cyclicBufferPos - delta):
- (_cyclicBufferPos - delta + _cyclicBufferSize);
- CIndex *pair = son + (cyclicPos << 1);
-
- // _mm_prefetch((const char *)pair, _MM_HINT_T0);
-
- const Byte *pb = _buffer + curMatch;
- UInt32 len = MyMin(len0, len1);
-
- if (pb[len] == cur[len])
- {
- while(++len != lenLimit)
- if (pb[len] != cur[len])
- break;
- if (len == lenLimit)
- {
- *ptr1 = pair[0];
- *ptr0 = pair[1];
- break;
- }
- }
- if (pb[len] < cur[len])
- {
- *ptr1 = curMatch;
- ptr1 = pair + 1;
- curMatch = *ptr1;
- len1 = len;
- }
- else
- {
- *ptr0 = curMatch;
- ptr0 = pair;
- curMatch = *ptr0;
- len0 = len;
- }
- }
- #endif
- if (++_cyclicBufferPos == _cyclicBufferSize)
- _cyclicBufferPos = 0;
- RINOK(CLZInWindow::MovePos());
- if (_pos == kMaxValForNormalize)
- Normalize();
- }
- while(--num != 0);
- return S_OK;
-}
-
-void CMatchFinder::Normalize()
-{
- UInt32 subValue = _pos - _cyclicBufferSize;
- CIndex *items = _hash;
- UInt32 numItems = (_hashSizeSum + _cyclicBufferSize
- #ifndef _HASH_CHAIN
- * 2
- #endif
- );
- for (UInt32 i = 0; i < numItems; i++)
- {
- UInt32 value = items[i];
- if (value <= subValue)
- value = kEmptyHashValue;
- else
- value -= subValue;
- items[i] = value;
- }
- ReduceOffsets(subValue);
-}
-
-HRESULT CMatchFinder::MovePos()
-{
- if (++_cyclicBufferPos == _cyclicBufferSize)
- _cyclicBufferPos = 0;
- RINOK(CLZInWindow::MovePos());
- if (_pos == kMaxValForNormalize)
- Normalize();
- return S_OK;
-}
-
-STDMETHODIMP_(Byte) CMatchFinder::GetIndexByte(Int32 index)
- { return CLZInWindow::GetIndexByte(index); }
-
-STDMETHODIMP_(UInt32) CMatchFinder::GetMatchLen(Int32 index,
- UInt32 back, UInt32 limit)
- { return CLZInWindow::GetMatchLen(index, back, limit); }
-
-STDMETHODIMP_(UInt32) CMatchFinder::GetNumAvailableBytes()
- { return CLZInWindow::GetNumAvailableBytes(); }
-
-STDMETHODIMP_(const Byte *) CMatchFinder::GetPointerToCurrentPos()
- { return CLZInWindow::GetPointerToCurrentPos(); }
-
-STDMETHODIMP_(Int32) CMatchFinder::NeedChangeBufferPos(UInt32 numCheckBytes)
- { return CLZInWindow::NeedMove(numCheckBytes) ? 1: 0; }
-
-STDMETHODIMP_(void) CMatchFinder::ChangeBufferPos()
- { CLZInWindow::MoveBlock();}
-
-#undef HASH_CALC
-#undef kNumHashDirectBytes
-
-}
+// BinTreeMain.h + +#include "../../../../Common/Defs.h" +#include "../../../../Common/CRC.h" +#include "../../../../Common/Alloc.h" + +#include "BinTree.h" + +// #include <xmmintrin.h> +// It's for prefetch +// But prefetch doesn't give big gain in K8. + +namespace BT_NAMESPACE { + +#ifdef HASH_ARRAY_2 + static const UInt32 kHash2Size = 1 << 10; + #define kNumHashDirectBytes 0 + #ifdef HASH_ARRAY_3 + static const UInt32 kNumHashBytes = 4; + static const UInt32 kHash3Size = 1 << 16; + #else + static const UInt32 kNumHashBytes = 3; + #endif + static const UInt32 kHashSize = 0; + static const UInt32 kMinMatchCheck = kNumHashBytes; + static const UInt32 kStartMaxLen = 1; +#else + #ifdef HASH_ZIP + #define kNumHashDirectBytes 0 + static const UInt32 kNumHashBytes = 3; + static const UInt32 kHashSize = 1 << 16; + static const UInt32 kMinMatchCheck = kNumHashBytes; + static const UInt32 kStartMaxLen = 1; + #else + #define kNumHashDirectBytes 2 + static const UInt32 kNumHashBytes = 2; + static const UInt32 kHashSize = 1 << (8 * kNumHashBytes); + static const UInt32 kMinMatchCheck = kNumHashBytes + 1; + static const UInt32 kStartMaxLen = 1; + #endif +#endif + +#ifdef HASH_ARRAY_2 +#ifdef HASH_ARRAY_3 +static const UInt32 kHash3Offset = kHash2Size; +#endif +#endif + +static const UInt32 kFixHashSize = 0 + #ifdef HASH_ARRAY_2 + + kHash2Size + #ifdef HASH_ARRAY_3 + + kHash3Size + #endif + #endif + ; + +CMatchFinder::CMatchFinder(): + _hash(0) +{ +} + +void CMatchFinder::FreeThisClassMemory() +{ + BigFree(_hash); + _hash = 0; +} + +void CMatchFinder::FreeMemory() +{ + FreeThisClassMemory(); + CLZInWindow::Free(); +} + +CMatchFinder::~CMatchFinder() +{ + FreeMemory(); +} + +STDMETHODIMP CMatchFinder::Create(UInt32 historySize, UInt32 keepAddBufferBefore, + UInt32 matchMaxLen, UInt32 keepAddBufferAfter) +{ + if (historySize > kMaxValForNormalize - 256) + { + FreeMemory(); + return E_INVALIDARG; + } + _cutValue = + #ifdef _HASH_CHAIN + 8 + (matchMaxLen >> 2); + #else + 16 + (matchMaxLen >> 1); + #endif + UInt32 sizeReserv = (historySize + keepAddBufferBefore + + matchMaxLen + keepAddBufferAfter) / 2 + 256; + if (CLZInWindow::Create(historySize + keepAddBufferBefore, + matchMaxLen + keepAddBufferAfter, sizeReserv)) + { + _matchMaxLen = matchMaxLen; + UInt32 newCyclicBufferSize = historySize + 1; + if (_hash != 0 && newCyclicBufferSize == _cyclicBufferSize) + return S_OK; + FreeThisClassMemory(); + _cyclicBufferSize = newCyclicBufferSize; // don't change it + + UInt32 hs = kHashSize; + + #ifdef HASH_ARRAY_2 + hs = historySize - 1; + hs |= (hs >> 1); + hs |= (hs >> 2); + hs |= (hs >> 4); + hs |= (hs >> 8); + hs >>= 1; + hs |= 0xFFFF; + if (hs > (1 << 24)) + { + #ifdef HASH_ARRAY_3 + hs >>= 1; + #else + hs = (1 << 24) - 1; + #endif + } + _hashMask = hs; + hs++; + #endif + _hashSizeSum = hs + kFixHashSize; + UInt32 numItems = _hashSizeSum + _cyclicBufferSize + #ifndef _HASH_CHAIN + * 2 + #endif + ; + size_t sizeInBytes = (size_t)numItems * sizeof(CIndex); + if (sizeInBytes / sizeof(CIndex) != numItems) + return E_OUTOFMEMORY; + _hash = (CIndex *)BigAlloc(sizeInBytes); + _son = _hash + _hashSizeSum; + if (_hash != 0) + return S_OK; + } + FreeMemory(); + return E_OUTOFMEMORY; +} + +static const UInt32 kEmptyHashValue = 0; + +STDMETHODIMP CMatchFinder::SetStream(ISequentialInStream *stream) +{ + CLZInWindow::SetStream(stream); + return S_OK; +} + +STDMETHODIMP CMatchFinder::Init() +{ + RINOK(CLZInWindow::Init()); + for(UInt32 i = 0; i < _hashSizeSum; i++) + _hash[i] = kEmptyHashValue; + _cyclicBufferPos = 0; + ReduceOffsets(-1); + return S_OK; +} + +STDMETHODIMP_(void) CMatchFinder::ReleaseStream() +{ + // ReleaseStream(); +} + +#ifdef HASH_ARRAY_2 +#ifdef HASH_ARRAY_3 + +#define HASH_CALC { \ + UInt32 temp = CCRC::Table[cur[0]] ^ cur[1]; \ + hash2Value = temp & (kHash2Size - 1); \ + hash3Value = (temp ^ (UInt32(cur[2]) << 8)) & (kHash3Size - 1); \ + hashValue = (temp ^ (UInt32(cur[2]) << 8) ^ (CCRC::Table[cur[3]] << 5)) & _hashMask; } + +#else // no HASH_ARRAY_3 +#define HASH_CALC { \ + UInt32 temp = CCRC::Table[cur[0]] ^ cur[1]; \ + hash2Value = temp & (kHash2Size - 1); \ + hashValue = (temp ^ (UInt32(cur[2]) << 8)) & _hashMask; } +#endif // HASH_ARRAY_3 +#else // no HASH_ARRAY_2 +#ifdef HASH_ZIP +inline UInt32 Hash(const Byte *pointer) +{ + return ((UInt32(pointer[0]) << 8) ^ CCRC::Table[pointer[1]] ^ pointer[2]) & (kHashSize - 1); +} +#else // no HASH_ZIP +inline UInt32 Hash(const Byte *pointer) +{ + return pointer[0] ^ (UInt32(pointer[1]) << 8); +} +#endif // HASH_ZIP +#endif // HASH_ARRAY_2 + +STDMETHODIMP CMatchFinder::GetMatches(UInt32 *distances) +{ + UInt32 lenLimit; + if (_pos + _matchMaxLen <= _streamPos) + lenLimit = _matchMaxLen; + else + { + lenLimit = _streamPos - _pos; + if(lenLimit < kMinMatchCheck) + { + distances[0] = 0; + return MovePos(); + } + } + + int offset = 1; + + UInt32 matchMinPos = (_pos > _cyclicBufferSize) ? (_pos - _cyclicBufferSize) : 0; + const Byte *cur = _buffer + _pos; + + UInt32 maxLen = kStartMaxLen; // to avoid items for len < hashSize; + + #ifdef HASH_ARRAY_2 + UInt32 hash2Value; + #ifdef HASH_ARRAY_3 + UInt32 hash3Value; + #endif + UInt32 hashValue; + HASH_CALC; + #else + UInt32 hashValue = Hash(cur); + #endif + + UInt32 curMatch = _hash[kFixHashSize + hashValue]; + #ifdef HASH_ARRAY_2 + UInt32 curMatch2 = _hash[hash2Value]; + #ifdef HASH_ARRAY_3 + UInt32 curMatch3 = _hash[kHash3Offset + hash3Value]; + #endif + _hash[hash2Value] = _pos; + if(curMatch2 > matchMinPos) + if (_buffer[curMatch2] == cur[0]) + { + distances[offset++] = maxLen = 2; + distances[offset++] = _pos - curMatch2 - 1; + } + + #ifdef HASH_ARRAY_3 + _hash[kHash3Offset + hash3Value] = _pos; + if(curMatch3 > matchMinPos) + if (_buffer[curMatch3] == cur[0]) + { + if (curMatch3 == curMatch2) + offset -= 2; + distances[offset++] = maxLen = 3; + distances[offset++] = _pos - curMatch3 - 1; + curMatch2 = curMatch3; + } + #endif + if (offset != 1 && curMatch2 == curMatch) + { + offset -= 2; + maxLen = kStartMaxLen; + } + #endif + + _hash[kFixHashSize + hashValue] = _pos; + + CIndex *son = _son; + + #ifdef _HASH_CHAIN + son[_cyclicBufferPos] = curMatch; + #else + CIndex *ptr0 = son + (_cyclicBufferPos << 1) + 1; + CIndex *ptr1 = son + (_cyclicBufferPos << 1); + + UInt32 len0, len1; + len0 = len1 = kNumHashDirectBytes; + #endif + + #if kNumHashDirectBytes != 0 + if(curMatch > matchMinPos) + { + if (_buffer[curMatch + kNumHashDirectBytes] != cur[kNumHashDirectBytes]) + { + distances[offset++] = maxLen = kNumHashDirectBytes; + distances[offset++] = _pos - curMatch - 1; + } + } + #endif + UInt32 count = _cutValue; + while(true) + { + if(curMatch <= matchMinPos || count-- == 0) + { + #ifndef _HASH_CHAIN + *ptr0 = *ptr1 = kEmptyHashValue; + #endif + break; + } + UInt32 delta = _pos - curMatch; + UInt32 cyclicPos = (delta <= _cyclicBufferPos) ? + (_cyclicBufferPos - delta): + (_cyclicBufferPos - delta + _cyclicBufferSize); + CIndex *pair = son + + #ifdef _HASH_CHAIN + cyclicPos; + #else + (cyclicPos << 1); + #endif + + // _mm_prefetch((const char *)pair, _MM_HINT_T0); + + const Byte *pb = _buffer + curMatch; + UInt32 len = + #ifdef _HASH_CHAIN + kNumHashDirectBytes; + if (pb[maxLen] == cur[maxLen]) + #else + MyMin(len0, len1); + #endif + if (pb[len] == cur[len]) + { + while(++len != lenLimit) + if (pb[len] != cur[len]) + break; + if (maxLen < len) + { + distances[offset++] = maxLen = len; + distances[offset++] = delta - 1; + if (len == lenLimit) + { + #ifndef _HASH_CHAIN + *ptr1 = pair[0]; + *ptr0 = pair[1]; + #endif + break; + } + } + } + #ifdef _HASH_CHAIN + curMatch = *pair; + #else + if (pb[len] < cur[len]) + { + *ptr1 = curMatch; + ptr1 = pair + 1; + curMatch = *ptr1; + len1 = len; + } + else + { + *ptr0 = curMatch; + ptr0 = pair; + curMatch = *ptr0; + len0 = len; + } + #endif + } + distances[0] = offset - 1; + if (++_cyclicBufferPos == _cyclicBufferSize) + _cyclicBufferPos = 0; + RINOK(CLZInWindow::MovePos()); + if (_pos == kMaxValForNormalize) + Normalize(); + return S_OK; +} + +STDMETHODIMP CMatchFinder::Skip(UInt32 num) +{ + do + { + #ifdef _HASH_CHAIN + if (_streamPos - _pos < kNumHashBytes) + { + RINOK(MovePos()); + continue; + } + #else + UInt32 lenLimit; + if (_pos + _matchMaxLen <= _streamPos) + lenLimit = _matchMaxLen; + else + { + lenLimit = _streamPos - _pos; + if(lenLimit < kMinMatchCheck) + { + RINOK(MovePos()); + continue; + } + } + UInt32 matchMinPos = (_pos > _cyclicBufferSize) ? (_pos - _cyclicBufferSize) : 0; + #endif + const Byte *cur = _buffer + _pos; + + #ifdef HASH_ARRAY_2 + UInt32 hash2Value; + #ifdef HASH_ARRAY_3 + UInt32 hash3Value; + UInt32 hashValue; + HASH_CALC; + _hash[kHash3Offset + hash3Value] = _pos; + #else + UInt32 hashValue; + HASH_CALC; + #endif + _hash[hash2Value] = _pos; + #else + UInt32 hashValue = Hash(cur); + #endif + + UInt32 curMatch = _hash[kFixHashSize + hashValue]; + _hash[kFixHashSize + hashValue] = _pos; + + #ifdef _HASH_CHAIN + _son[_cyclicBufferPos] = curMatch; + #else + CIndex *son = _son; + CIndex *ptr0 = son + (_cyclicBufferPos << 1) + 1; + CIndex *ptr1 = son + (_cyclicBufferPos << 1); + + UInt32 len0, len1; + len0 = len1 = kNumHashDirectBytes; + UInt32 count = _cutValue; + while(true) + { + if(curMatch <= matchMinPos || count-- == 0) + { + *ptr0 = *ptr1 = kEmptyHashValue; + break; + } + + UInt32 delta = _pos - curMatch; + UInt32 cyclicPos = (delta <= _cyclicBufferPos) ? + (_cyclicBufferPos - delta): + (_cyclicBufferPos - delta + _cyclicBufferSize); + CIndex *pair = son + (cyclicPos << 1); + + // _mm_prefetch((const char *)pair, _MM_HINT_T0); + + const Byte *pb = _buffer + curMatch; + UInt32 len = MyMin(len0, len1); + + if (pb[len] == cur[len]) + { + while(++len != lenLimit) + if (pb[len] != cur[len]) + break; + if (len == lenLimit) + { + *ptr1 = pair[0]; + *ptr0 = pair[1]; + break; + } + } + if (pb[len] < cur[len]) + { + *ptr1 = curMatch; + ptr1 = pair + 1; + curMatch = *ptr1; + len1 = len; + } + else + { + *ptr0 = curMatch; + ptr0 = pair; + curMatch = *ptr0; + len0 = len; + } + } + #endif + if (++_cyclicBufferPos == _cyclicBufferSize) + _cyclicBufferPos = 0; + RINOK(CLZInWindow::MovePos()); + if (_pos == kMaxValForNormalize) + Normalize(); + } + while(--num != 0); + return S_OK; +} + +void CMatchFinder::Normalize() +{ + UInt32 subValue = _pos - _cyclicBufferSize; + CIndex *items = _hash; + UInt32 numItems = (_hashSizeSum + _cyclicBufferSize + #ifndef _HASH_CHAIN + * 2 + #endif + ); + for (UInt32 i = 0; i < numItems; i++) + { + UInt32 value = items[i]; + if (value <= subValue) + value = kEmptyHashValue; + else + value -= subValue; + items[i] = value; + } + ReduceOffsets(subValue); +} + +HRESULT CMatchFinder::MovePos() +{ + if (++_cyclicBufferPos == _cyclicBufferSize) + _cyclicBufferPos = 0; + RINOK(CLZInWindow::MovePos()); + if (_pos == kMaxValForNormalize) + Normalize(); + return S_OK; +} + +STDMETHODIMP_(Byte) CMatchFinder::GetIndexByte(Int32 index) + { return CLZInWindow::GetIndexByte(index); } + +STDMETHODIMP_(UInt32) CMatchFinder::GetMatchLen(Int32 index, + UInt32 back, UInt32 limit) + { return CLZInWindow::GetMatchLen(index, back, limit); } + +STDMETHODIMP_(UInt32) CMatchFinder::GetNumAvailableBytes() + { return CLZInWindow::GetNumAvailableBytes(); } + +STDMETHODIMP_(const Byte *) CMatchFinder::GetPointerToCurrentPos() + { return CLZInWindow::GetPointerToCurrentPos(); } + +STDMETHODIMP_(Int32) CMatchFinder::NeedChangeBufferPos(UInt32 numCheckBytes) + { return CLZInWindow::NeedMove(numCheckBytes) ? 1: 0; } + +STDMETHODIMP_(void) CMatchFinder::ChangeBufferPos() + { CLZInWindow::MoveBlock();} + +#undef HASH_CALC +#undef kNumHashDirectBytes + +} |