public CLzmaProps(CLzmaProps other)
{
this.mLC = other.mLC;
this.mLP = other.mLP;
this.mPB = other.mPB;
this.mDicSize = other.mDicSize;
}
public SRes LzmaDec_Allocate(P<byte> props, uint propsSize, ISzAlloc alloc)
{
CLzmaProps propNew = new CLzmaProps();
SRes res;
if ((res = propNew.LzmaProps_Decode(props, propsSize)) != SZ_OK)
return res;
if ((res = LzmaDec_AllocateProbs2(propNew, alloc)) != SZ_OK)
return res;
long dicBufSize = propNew.mDicSize;
if (mDic == null || dicBufSize != mDicBufSize)
{
LzmaDec_FreeDict(alloc);
mDic = alloc.AllocBytes(alloc, dicBufSize);
if (mDic == null)
{
LzmaDec_FreeProbs(alloc);
return SZ_ERROR_MEM;
}
}
mDicBufSize = dicBufSize;
mProp = new CLzmaProps(propNew);
return SZ_OK;
}
private static uint LzmaProps_GetNumProbs(CLzmaProps p)
{
return LZMA_BASE_SIZE + (LZMA_LIT_SIZE << (p.mLC + p.mLP));
}
/* ---------- Interfaces ---------- */
/* There are 3 levels of interfaces:
1) Dictionary Interface
2) Buffer Interface
3) One Call Interface
You can select any of these interfaces, but don't mix functions from different
groups for same object. */
/* There are two variants to allocate state for Dictionary Interface:
1) LzmaDec_Allocate / LzmaDec_Free
2) LzmaDec_AllocateProbs / LzmaDec_FreeProbs
You can use variant 2, if you set dictionary buffer manually.
For Buffer Interface you must always use variant 1.
LzmaDec_Allocate* can return:
SZ_OK
SZ_ERROR_MEM - Memory allocation error
SZ_ERROR_UNSUPPORTED - Unsupported properties
*/
public SRes LzmaDec_AllocateProbs(P<byte> props, uint propsSize, ISzAlloc alloc)
{
SRes res;
CLzmaProps propNew = new CLzmaProps();
if ((res = propNew.LzmaProps_Decode(props, propsSize)) != SZ_OK) return res;
if ((res = LzmaDec_AllocateProbs2(propNew, alloc)) != SZ_OK) return res;
mProp = new CLzmaProps(propNew);
return SZ_OK;
}
private SRes LzmaDec_AllocateProbs2(CLzmaProps propNew, ISzAlloc alloc)
{
uint numProbs = LzmaProps_GetNumProbs(propNew);
if (mProbs == null || numProbs != mNumProbs)
{
LzmaDec_FreeProbs(alloc);
mProbs = alloc.AllocUInt16(alloc, numProbs);
mNumProbs = numProbs;
if (mProbs == null)
return SZ_ERROR_MEM;
}
return SZ_OK;
}