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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 19:33:14 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 19:33:14 +0000 |
| commit | 36d22d82aa202bb199967e9512281e9a53db42c9 (patch) | |
| tree | 105e8c98ddea1c1e4784a60a5a6410fa416be2de /other-licenses/7zstub/src/CPP/7zip/Compress/PpmdDecoder.cpp | |
| parent | Initial commit. (diff) | |
| download | firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.tar.xz firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.zip | |
Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'other-licenses/7zstub/src/CPP/7zip/Compress/PpmdDecoder.cpp')
| -rw-r--r-- | other-licenses/7zstub/src/CPP/7zip/Compress/PpmdDecoder.cpp | 170 |
1 files changed, 170 insertions, 0 deletions
diff --git a/other-licenses/7zstub/src/CPP/7zip/Compress/PpmdDecoder.cpp b/other-licenses/7zstub/src/CPP/7zip/Compress/PpmdDecoder.cpp new file mode 100644 index 0000000000..4820c0a7c0 --- /dev/null +++ b/other-licenses/7zstub/src/CPP/7zip/Compress/PpmdDecoder.cpp @@ -0,0 +1,170 @@ +// PpmdDecoder.cpp
+// 2009-03-11 : Igor Pavlov : Public domain
+
+#include "StdAfx.h"
+
+#include "../../../C/Alloc.h"
+#include "../../../C/CpuArch.h"
+
+#include "../Common/StreamUtils.h"
+
+#include "PpmdDecoder.h"
+
+namespace NCompress {
+namespace NPpmd {
+
+static const UInt32 kBufSize = (1 << 20);
+
+enum
+{
+ kStatus_NeedInit,
+ kStatus_Normal,
+ kStatus_Finished,
+ kStatus_Error
+};
+
+CDecoder::~CDecoder()
+{
+ ::MidFree(_outBuf);
+ Ppmd7_Free(&_ppmd, &g_BigAlloc);
+}
+
+STDMETHODIMP CDecoder::SetDecoderProperties2(const Byte *props, UInt32 size)
+{
+ if (size < 5)
+ return E_INVALIDARG;
+ _order = props[0];
+ UInt32 memSize = GetUi32(props + 1);
+ if (_order < PPMD7_MIN_ORDER ||
+ _order > PPMD7_MAX_ORDER ||
+ memSize < PPMD7_MIN_MEM_SIZE ||
+ memSize > PPMD7_MAX_MEM_SIZE)
+ return E_NOTIMPL;
+ if (!_inStream.Alloc(1 << 20))
+ return E_OUTOFMEMORY;
+ if (!Ppmd7_Alloc(&_ppmd, memSize, &g_BigAlloc))
+ return E_OUTOFMEMORY;
+ return S_OK;
+}
+
+HRESULT CDecoder::CodeSpec(Byte *memStream, UInt32 size)
+{
+ switch (_status)
+ {
+ case kStatus_Finished: return S_OK;
+ case kStatus_Error: return S_FALSE;
+ case kStatus_NeedInit:
+ _inStream.Init();
+ if (!Ppmd7z_RangeDec_Init(&_rangeDec))
+ {
+ _status = kStatus_Error;
+ return S_FALSE;
+ }
+ _status = kStatus_Normal;
+ Ppmd7_Init(&_ppmd, _order);
+ break;
+ }
+ if (_outSizeDefined)
+ {
+ const UInt64 rem = _outSize - _processedSize;
+ if (size > rem)
+ size = (UInt32)rem;
+ }
+
+ UInt32 i;
+ int sym = 0;
+ for (i = 0; i != size; i++)
+ {
+ sym = Ppmd7_DecodeSymbol(&_ppmd, &_rangeDec.vt);
+ if (_inStream.Extra || sym < 0)
+ break;
+ memStream[i] = (Byte)sym;
+ }
+
+ _processedSize += i;
+ if (_inStream.Extra)
+ {
+ _status = kStatus_Error;
+ return _inStream.Res;
+ }
+ if (sym < 0)
+ _status = (sym < -1) ? kStatus_Error : kStatus_Finished;
+ return S_OK;
+}
+
+STDMETHODIMP CDecoder::Code(ISequentialInStream *inStream, ISequentialOutStream *outStream,
+ const UInt64 * /* inSize */, const UInt64 *outSize, ICompressProgressInfo *progress)
+{
+ if (!_outBuf)
+ {
+ _outBuf = (Byte *)::MidAlloc(kBufSize);
+ if (!_outBuf)
+ return E_OUTOFMEMORY;
+ }
+
+ _inStream.Stream = inStream;
+ SetOutStreamSize(outSize);
+
+ do
+ {
+ const UInt64 startPos = _processedSize;
+ HRESULT res = CodeSpec(_outBuf, kBufSize);
+ size_t processed = (size_t)(_processedSize - startPos);
+ RINOK(WriteStream(outStream, _outBuf, processed));
+ RINOK(res);
+ if (_status == kStatus_Finished)
+ break;
+ if (progress)
+ {
+ UInt64 inSize = _inStream.GetProcessed();
+ RINOK(progress->SetRatioInfo(&inSize, &_processedSize));
+ }
+ }
+ while (!_outSizeDefined || _processedSize < _outSize);
+ return S_OK;
+}
+
+STDMETHODIMP CDecoder::SetOutStreamSize(const UInt64 *outSize)
+{
+ _outSizeDefined = (outSize != NULL);
+ if (_outSizeDefined)
+ _outSize = *outSize;
+ _processedSize = 0;
+ _status = kStatus_NeedInit;
+ return S_OK;
+}
+
+
+STDMETHODIMP CDecoder::GetInStreamProcessedSize(UInt64 *value)
+{
+ *value = _inStream.GetProcessed();
+ return S_OK;
+}
+
+#ifndef NO_READ_FROM_CODER
+
+STDMETHODIMP CDecoder::SetInStream(ISequentialInStream *inStream)
+{
+ InSeqStream = inStream;
+ _inStream.Stream = inStream;
+ return S_OK;
+}
+
+STDMETHODIMP CDecoder::ReleaseInStream()
+{
+ InSeqStream.Release();
+ return S_OK;
+}
+
+STDMETHODIMP CDecoder::Read(void *data, UInt32 size, UInt32 *processedSize)
+{
+ const UInt64 startPos = _processedSize;
+ HRESULT res = CodeSpec((Byte *)data, size);
+ if (processedSize)
+ *processedSize = (UInt32)(_processedSize - startPos);
+ return res;
+}
+
+#endif
+
+}}
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