mirror of https://github.com/snes9xgit/snes9x.git
90 lines
2.3 KiB
C++
90 lines
2.3 KiB
C++
/*
|
|
Copyright (C) 2002 Andrea Mazzoleni ( http://advancemame.sf.net )
|
|
Copyright (C) 2001-4 Igor Pavlov ( http://www.7-zip.org )
|
|
|
|
This library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Lesser General Public
|
|
License version 2.1 as published by the Free Software Foundation.
|
|
|
|
This library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with this library; if not, write to the Free Software
|
|
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
*/
|
|
|
|
#include "winout.h"
|
|
|
|
namespace NStream {
|
|
namespace NWindow {
|
|
|
|
void COut::Create(UINT32 aKeepSizeBefore, UINT32 aKeepSizeAfter, UINT32 aKeepSizeReserv)
|
|
{
|
|
m_Pos = 0;
|
|
m_PosLimit = aKeepSizeReserv + aKeepSizeBefore;
|
|
m_KeepSizeBefore = aKeepSizeBefore;
|
|
m_KeepSizeAfter = aKeepSizeAfter;
|
|
m_KeepSizeReserv = aKeepSizeReserv;
|
|
m_StreamPos = 0;
|
|
m_MoveFrom = m_KeepSizeReserv;
|
|
m_WindowSize = aKeepSizeBefore;
|
|
UINT32 aBlockSize = m_KeepSizeBefore + m_KeepSizeAfter + m_KeepSizeReserv;
|
|
delete []m_Buffer;
|
|
m_Buffer = new BYTE[aBlockSize];
|
|
}
|
|
|
|
COut::~COut()
|
|
{
|
|
delete []m_Buffer;
|
|
}
|
|
|
|
void COut::SetWindowSize(UINT32 aWindowSize)
|
|
{
|
|
m_WindowSize = aWindowSize;
|
|
m_MoveFrom = m_KeepSizeReserv + m_KeepSizeBefore - aWindowSize;
|
|
}
|
|
|
|
void COut::Init(ISequentialOutStream *aStream, bool aSolid)
|
|
{
|
|
m_Stream = aStream;
|
|
|
|
if(aSolid)
|
|
m_StreamPos = m_Pos;
|
|
else
|
|
{
|
|
m_Pos = 0;
|
|
m_PosLimit = m_KeepSizeReserv + m_KeepSizeBefore;
|
|
m_StreamPos = 0;
|
|
}
|
|
}
|
|
|
|
HRESULT COut::Flush()
|
|
{
|
|
UINT32 aSize = m_Pos - m_StreamPos;
|
|
if(aSize == 0)
|
|
return S_OK;
|
|
UINT32 aProcessedSize;
|
|
HRESULT aResult = m_Stream->Write(m_Buffer + m_StreamPos, aSize, &aProcessedSize);
|
|
if (aResult != S_OK)
|
|
return aResult;
|
|
if (aSize != aProcessedSize)
|
|
return E_FAIL;
|
|
m_StreamPos = m_Pos;
|
|
return S_OK;
|
|
}
|
|
|
|
void COut::MoveBlockBackward()
|
|
{
|
|
HRESULT aResult = Flush();
|
|
if (aResult != S_OK)
|
|
throw aResult;
|
|
memmove(m_Buffer, m_Buffer + m_MoveFrom, m_WindowSize + m_KeepSizeAfter);
|
|
m_Pos -= m_MoveFrom;
|
|
m_StreamPos -= m_MoveFrom;
|
|
}
|
|
|
|
}}
|