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// BranchMisc.cpp
#include "StdAfx.h"
#include "../../../C/CpuArch.h"
#include "../Common/StreamUtils.h"
#include "BranchMisc.h"
namespace NCompress {
namespace NBranch {
Z7_COM7F_IMF(CCoder::Init())
{
_pc = 0;
return S_OK;
}
Z7_COM7F_IMF2(UInt32, CCoder::Filter(Byte *data, UInt32 size))
{
const UInt32 processed = (UInt32)(size_t)(BraFunc(data, size, _pc) - data);
_pc += processed;
return processed;
}
#ifndef Z7_EXTRACT_ONLY
Z7_COM7F_IMF(CEncoder::Init())
{
_pc = _pc_Init;
return S_OK;
}
Z7_COM7F_IMF2(UInt32, CEncoder::Filter(Byte *data, UInt32 size))
{
const UInt32 processed = (UInt32)(size_t)(BraFunc(data, size, _pc) - data);
_pc += processed;
return processed;
}
Z7_COM7F_IMF(CEncoder::SetCoderProperties(const PROPID *propIDs, const PROPVARIANT *props, UInt32 numProps))
{
UInt32 pc = 0;
for (UInt32 i = 0; i < numProps; i++)
{
const PROPID propID = propIDs[i];
if (propID == NCoderPropID::kDefaultProp ||
propID == NCoderPropID::kBranchOffset)
{
const PROPVARIANT &prop = props[i];
if (prop.vt != VT_UI4)
return E_INVALIDARG;
pc = prop.ulVal;
if (pc & _alignment)
return E_INVALIDARG;
}
}
_pc_Init = pc;
return S_OK;
}
Z7_COM7F_IMF(CEncoder::WriteCoderProperties(ISequentialOutStream *outStream))
{
if (_pc_Init == 0)
return S_OK;
UInt32 buf32[1];
SetUi32(buf32, _pc_Init)
return WriteStream(outStream, buf32, 4);
}
#endif
Z7_COM7F_IMF(CDecoder::Init())
{
_pc = _pc_Init;
return S_OK;
}
Z7_COM7F_IMF2(UInt32, CDecoder::Filter(Byte *data, UInt32 size))
{
const UInt32 processed = (UInt32)(size_t)(BraFunc(data, size, _pc) - data);
_pc += processed;
return processed;
}
Z7_COM7F_IMF(CDecoder::SetDecoderProperties2(const Byte *props, UInt32 size))
{
UInt32 val = 0;
if (size != 0)
{
if (size != 4)
return E_NOTIMPL;
val = GetUi32(props);
if (val & _alignment)
return E_NOTIMPL;
}
_pc_Init = val;
return S_OK;
}
}}
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