CEncoder::CEncoder(): _inBuf(NULL) { _props.Normalize(-1); _rangeEnc.Stream = &_outStream.vt; Ppmd7_Construct(&_ppmd); }
CEncoder::CEncoder(): _inBuf(NULL), _usedMemSize(1 << 24), _order(6) { _rangeEnc.Stream = &_outStream.p; Ppmd7_Construct(&_ppmd); }
static SRes SzDecodePpmd(CSzCoderInfo *coder, UInt64 inSize, ILookInStream *inStream, Byte *outBuffer, SizeT outSize, ISzAlloc *allocMain) { CPpmd7 ppmd; CByteInToLook s; SRes res = SZ_OK; s.p.Read = ReadByte; s.inStream = inStream; s.begin = s.end = s.cur = NULL; s.extra = False; s.res = SZ_OK; s.processed = 0; if (coder->Props.size != 5) return SZ_ERROR_UNSUPPORTED; { unsigned order = coder->Props.data[0]; UInt32 memSize = GetUi32(coder->Props.data + 1); if (order < PPMD7_MIN_ORDER || order > PPMD7_MAX_ORDER || memSize < PPMD7_MIN_MEM_SIZE || memSize > PPMD7_MAX_MEM_SIZE) return SZ_ERROR_UNSUPPORTED; Ppmd7_Construct(&ppmd); if (!Ppmd7_Alloc(&ppmd, memSize, allocMain)) return SZ_ERROR_MEM; Ppmd7_Init(&ppmd, order); } { CPpmd7z_RangeDec rc; Ppmd7z_RangeDec_CreateVTable(&rc); rc.Stream = &s.p; if (!Ppmd7z_RangeDec_Init(&rc)) res = SZ_ERROR_DATA; else if (s.extra) res = (s.res != SZ_OK ? s.res : SZ_ERROR_DATA); else { SizeT i; for (i = 0; i < outSize; i++) { int sym = Ppmd7_DecodeSymbol(&ppmd, &rc.p); if (s.extra || sym < 0) break; outBuffer[i] = (Byte)sym; } if (i != outSize) res = (s.res != SZ_OK ? s.res : SZ_ERROR_DATA); else if (s.processed + (s.cur - s.begin) != inSize || !Ppmd7z_RangeDec_IsFinishedOK(&rc)) res = SZ_ERROR_DATA; } } Ppmd7_Free(&ppmd, allocMain); return res; }