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| author | wolfbeast <mcwerewolf@wolfbeast.com> | 2019-03-29 16:04:01 +0100 |
|---|---|---|
| committer | wolfbeast <mcwerewolf@wolfbeast.com> | 2019-03-29 16:04:01 +0100 |
| commit | 88083f8c683c18f4de68a20c863a82a9da65db8f (patch) | |
| tree | 926656892d9d80260da02ea8ea71031b140c51df /other-licenses/7zstub/src/CPP/Common/CrcReg.cpp | |
| parent | f999f544aad04069b03704d994a99352263f600b (diff) | |
| parent | 843e4ceffd6ce21a6e6db37419335eafdc543e18 (diff) | |
| download | UXP-88083f8c683c18f4de68a20c863a82a9da65db8f.tar UXP-88083f8c683c18f4de68a20c863a82a9da65db8f.tar.gz UXP-88083f8c683c18f4de68a20c863a82a9da65db8f.tar.lz UXP-88083f8c683c18f4de68a20c863a82a9da65db8f.tar.xz UXP-88083f8c683c18f4de68a20c863a82a9da65db8f.zip | |
Merge branch 'master' into Sync-weave
Diffstat (limited to 'other-licenses/7zstub/src/CPP/Common/CrcReg.cpp')
| -rw-r--r-- | other-licenses/7zstub/src/CPP/Common/CrcReg.cpp | 98 |
1 files changed, 98 insertions, 0 deletions
diff --git a/other-licenses/7zstub/src/CPP/Common/CrcReg.cpp b/other-licenses/7zstub/src/CPP/Common/CrcReg.cpp new file mode 100644 index 000000000..1d9d00903 --- /dev/null +++ b/other-licenses/7zstub/src/CPP/Common/CrcReg.cpp @@ -0,0 +1,98 @@ +// CrcReg.cpp
+
+#include "StdAfx.h"
+
+#include "../../C/7zCrc.h"
+#include "../../C/CpuArch.h"
+
+#include "../Common/MyCom.h"
+
+#include "../7zip/Common/RegisterCodec.h"
+
+EXTERN_C_BEGIN
+
+typedef UInt32 (MY_FAST_CALL *CRC_FUNC)(UInt32 v, const void *data, size_t size, const UInt32 *table);
+
+UInt32 MY_FAST_CALL CrcUpdateT1(UInt32 v, const void *data, size_t size, const UInt32 *table);
+
+extern CRC_FUNC g_CrcUpdate;
+extern CRC_FUNC g_CrcUpdateT8;
+extern CRC_FUNC g_CrcUpdateT4;
+
+EXTERN_C_END
+
+class CCrcHasher:
+ public IHasher,
+ public ICompressSetCoderProperties,
+ public CMyUnknownImp
+{
+ UInt32 _crc;
+ CRC_FUNC _updateFunc;
+ Byte mtDummy[1 << 7];
+
+ bool SetFunctions(UInt32 tSize);
+public:
+ CCrcHasher(): _crc(CRC_INIT_VAL) { SetFunctions(0); }
+
+ MY_UNKNOWN_IMP2(IHasher, ICompressSetCoderProperties)
+ INTERFACE_IHasher(;)
+ STDMETHOD(SetCoderProperties)(const PROPID *propIDs, const PROPVARIANT *props, UInt32 numProps);
+};
+
+bool CCrcHasher::SetFunctions(UInt32 tSize)
+{
+ _updateFunc = g_CrcUpdate;
+
+ if (tSize == 1)
+ _updateFunc = CrcUpdateT1;
+ else if (tSize == 4)
+ {
+ if (g_CrcUpdateT4)
+ _updateFunc = g_CrcUpdateT4;
+ else
+ return false;
+ }
+ else if (tSize == 8)
+ {
+ if (g_CrcUpdateT8)
+ _updateFunc = g_CrcUpdateT8;
+ else
+ return false;
+ }
+
+ return true;
+}
+
+STDMETHODIMP CCrcHasher::SetCoderProperties(const PROPID *propIDs, const PROPVARIANT *coderProps, UInt32 numProps)
+{
+ for (UInt32 i = 0; i < numProps; i++)
+ {
+ const PROPVARIANT &prop = coderProps[i];
+ if (propIDs[i] == NCoderPropID::kDefaultProp)
+ {
+ if (prop.vt != VT_UI4)
+ return E_INVALIDARG;
+ if (!SetFunctions(prop.ulVal))
+ return E_NOTIMPL;
+ }
+ }
+ return S_OK;
+}
+
+STDMETHODIMP_(void) CCrcHasher::Init() throw()
+{
+ _crc = CRC_INIT_VAL;
+}
+
+STDMETHODIMP_(void) CCrcHasher::Update(const void *data, UInt32 size) throw()
+{
+ _crc = _updateFunc(_crc, data, size, g_CrcTable);
+}
+
+STDMETHODIMP_(void) CCrcHasher::Final(Byte *digest) throw()
+{
+ UInt32 val = CRC_GET_DIGEST(_crc);
+ SetUi32(digest, val);
+}
+
+REGISTER_HASHER(CCrcHasher, 0x1, "CRC32", 4)
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