4.63

CPP/7zip/Compress/PpmdDecoder.h

@@ -0,0 +1,86 @@
+// PpmdDecoder.h
+
+#ifndef __COMPRESS_PPMD_DECODER_H
+#define __COMPRESS_PPMD_DECODER_H
+
+#include "../../Common/MyCom.h"
+
+#include "../ICoder.h"
+
+#include "../Common/OutBuffer.h"
+
+#include "PpmdDecode.h"
+#include "RangeCoder.h"
+
+namespace NCompress {
+namespace NPpmd {
+
+class CDecoder :
+  public ICompressCoder,
+  public ICompressSetDecoderProperties2,
+  #ifndef NO_READ_FROM_CODER
+  public ICompressSetInStream,
+  public ICompressSetOutStreamSize,
+  public ISequentialInStream,
+  #endif
+  public CMyUnknownImp
+{
+  CRangeDecoder _rangeDecoder;
+
+  COutBuffer _outStream;
+
+  CDecodeInfo _info;
+
+  Byte _order;
+  UInt32 _usedMemorySize;
+
+  int _remainLen;
+  UInt64 _outSize;
+  bool _outSizeDefined;
+  UInt64 _processedSize;
+
+  HRESULT CodeSpec(UInt32 num, Byte *memStream);
+
+public:
+
+  #ifndef NO_READ_FROM_CODER
+  MY_UNKNOWN_IMP4(
+      ICompressSetDecoderProperties2,
+      ICompressSetInStream,
+      ICompressSetOutStreamSize,
+      ISequentialInStream)
+  #else
+  MY_UNKNOWN_IMP1(
+      ICompressSetDecoderProperties2)
+  #endif
+
+  void ReleaseStreams()
+  {
+    ReleaseInStream();
+    _outStream.ReleaseStream();
+  }
+
+  HRESULT Flush() { return _outStream.Flush(); }
+
+  STDMETHOD(CodeReal)(ISequentialInStream *inStream, ISequentialOutStream *outStream,
+      const UInt64 *inSize, const UInt64 *outSize, ICompressProgressInfo *progress);
+
+  STDMETHOD(Code)(ISequentialInStream *inStream, ISequentialOutStream *outStream,
+      const UInt64 *inSize, const UInt64 *outSize, ICompressProgressInfo *progress);
+
+  STDMETHOD(SetDecoderProperties2)(const Byte *data, UInt32 size);
+
+  STDMETHOD(SetInStream)(ISequentialInStream *inStream);
+  STDMETHOD(ReleaseInStream)();
+  STDMETHOD(SetOutStreamSize)(const UInt64 *outSize);
+
+  #ifndef NO_READ_FROM_CODER
+  STDMETHOD(Read)(void *data, UInt32 size, UInt32 *processedSize);
+  #endif
+
+  CDecoder(): _outSizeDefined(false) {}
+};
+
+}}
+
+#endif