297 lines
9.1 KiB
C++
297 lines
9.1 KiB
C++
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// Swing.cpp : Implementation of CSwingTool
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//
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// Copyright (C) 1999 Microsoft Corporation. All Rights Reserved
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//
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#include "dmusicc.h"
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#include "dmusici.h"
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#include "debug.h"
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#include "swing.h"
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#include "toolhelp.h"
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CSwingTool::CSwingTool()
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{
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ParamInfo Params[DMUS_SWING_PARAMCOUNT] =
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{
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{ DMUS_SWING_STRENGTH, MPT_INT,MP_CAPS_ALL,0,100,100,
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L"Percent",L"Strength",NULL }, // Strength - 100% by default
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};
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InitParams(DMUS_SWING_PARAMCOUNT,Params);
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m_fMusicTime = TRUE; // override default setting.
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}
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STDMETHODIMP_(ULONG) CSwingTool::AddRef()
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{
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return InterlockedIncrement(&m_cRef);
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}
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STDMETHODIMP_(ULONG) CSwingTool::Release()
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{
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if( 0 == InterlockedDecrement(&m_cRef) )
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{
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delete this;
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return 0;
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}
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return m_cRef;
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}
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STDMETHODIMP CSwingTool::QueryInterface(const IID &iid, void **ppv)
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{
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if (iid == IID_IUnknown || iid == IID_IDirectMusicTool || iid == IID_IDirectMusicTool8)
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{
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*ppv = static_cast<IDirectMusicTool8*>(this);
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}
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else if(iid == IID_IPersistStream)
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{
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*ppv = static_cast<IPersistStream*>(this);
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}
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else if(iid == IID_IDirectMusicSwingTool)
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{
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*ppv = static_cast<IDirectMusicSwingTool*>(this);
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}
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else if(iid == IID_IMediaParams)
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{
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*ppv = static_cast<IMediaParams*>(this);
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}
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else if(iid == IID_IMediaParamInfo)
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{
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*ppv = static_cast<IMediaParamInfo*>(this);
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}
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else if(iid == IID_ISpecifyPropertyPages)
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{
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*ppv = static_cast<ISpecifyPropertyPages*>(this);
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}
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else
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{
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*ppv = NULL;
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return E_NOINTERFACE;
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}
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AddRef();
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return S_OK;
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}
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//////////////////////////////////////////////////////////////////////
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// IPersistStream
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STDMETHODIMP CSwingTool::GetClassID(CLSID* pClassID)
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{
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if (pClassID)
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{
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*pClassID = CLSID_DirectMusicSwingTool;
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return S_OK;
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}
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return E_POINTER;
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}
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//////////////////////////////////////////////////////////////////////
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// IPersistStream Methods:
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STDMETHODIMP CSwingTool::IsDirty()
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{
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if (m_fDirty) return S_OK;
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else return S_FALSE;
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}
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STDMETHODIMP CSwingTool::Load(IStream* pStream)
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{
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EnterCriticalSection(&m_CrSec);
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DWORD dwChunkID;
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DWORD dwSize;
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HRESULT hr = pStream->Read(&dwChunkID, sizeof(dwChunkID), NULL);
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hr = pStream->Read(&dwSize, sizeof(dwSize), NULL);
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if(SUCCEEDED(hr) && (dwChunkID == FOURCC_SWING_CHUNK))
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{
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DMUS_IO_SWING_HEADER Header;
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memset(&Header,0,sizeof(Header));
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hr = pStream->Read(&Header, min(sizeof(Header),dwSize), NULL);
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if (SUCCEEDED(hr))
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{
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SetParam(DMUS_SWING_STRENGTH,(float) Header.dwStrength);
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}
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}
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m_fDirty = FALSE;
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LeaveCriticalSection(&m_CrSec);
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return hr;
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}
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STDMETHODIMP CSwingTool::Save(IStream* pStream, BOOL fClearDirty)
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{
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EnterCriticalSection(&m_CrSec);
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DWORD dwChunkID = FOURCC_SWING_CHUNK;
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DWORD dwSize = sizeof(DMUS_IO_SWING_HEADER);
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HRESULT hr = pStream->Write(&dwChunkID, sizeof(dwChunkID), NULL);
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if (SUCCEEDED(hr))
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{
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hr = pStream->Write(&dwSize, sizeof(dwSize), NULL);
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}
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if (SUCCEEDED(hr))
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{
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DMUS_IO_SWING_HEADER Header;
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GetParamInt(DMUS_SWING_STRENGTH,MAX_REF_TIME,(long *)&Header.dwStrength);
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hr = pStream->Write(&Header, sizeof(Header),NULL);
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}
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if (fClearDirty) m_fDirty = FALSE;
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LeaveCriticalSection(&m_CrSec);
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return hr;
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}
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STDMETHODIMP CSwingTool::GetSizeMax(ULARGE_INTEGER* pcbSize)
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{
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if (pcbSize == NULL)
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{
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return E_POINTER;
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}
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pcbSize->QuadPart = sizeof(DMUS_IO_SWING_HEADER) + 8; // Data plus RIFF header.
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return S_OK;
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}
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STDMETHODIMP CSwingTool::GetPages(CAUUID * pPages)
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{
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pPages->cElems = 1;
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pPages->pElems = (GUID *) CoTaskMemAlloc(sizeof(GUID));
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if (pPages->pElems == NULL)
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return E_OUTOFMEMORY;
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*(pPages->pElems) = CLSID_SwingPage;
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return NOERROR;
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}
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/////////////////////////////////////////////////////////////////
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// IDirectMusicTool
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STDMETHODIMP CSwingTool::ProcessPMsg( IDirectMusicPerformance* pPerf,
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DMUS_PMSG* pPMsg )
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{
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// returning S_FREE frees the message. If StampPMsg()
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// fails, there is no destination for this message so
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// free it.
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if(NULL == pPMsg->pGraph )
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{
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return DMUS_S_FREE;
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}
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if (FAILED(pPMsg->pGraph->StampPMsg(pPMsg)))
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{
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return DMUS_S_FREE;
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}
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// We need to know the time format so we can call GetParamInt() to read control parameters.
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REFERENCE_TIME rtTime;
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if (m_fMusicTime) rtTime = pPMsg->mtTime;
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else rtTime = pPMsg->rtTime;
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if( pPMsg->dwType == DMUS_PMSGT_NOTE )
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{
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DMUS_NOTE_PMSG *pNote = (DMUS_NOTE_PMSG *) pPMsg;
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IDirectMusicPerformance8 *pPerf8; // We'll need the DX8 interface to access ClonePMsg.
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if (SUCCEEDED(pPerf->QueryInterface(IID_IDirectMusicPerformance8,(void **)&pPerf8)))
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{
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long lStrength;
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GetParamInt(DMUS_SWING_STRENGTH,rtTime,&lStrength);
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DMUS_TIMESIGNATURE TimeSig;
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if (SUCCEEDED(pPerf8->GetParamEx(GUID_TimeSignature,pNote->dwVirtualTrackID,pNote->dwGroupID,DMUS_SEG_ANYTRACK,pNote->mtTime,NULL,&TimeSig)))
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{
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long lGrid = ((4 * 768) / TimeSig.bBeat) / TimeSig.wGridsPerBeat;
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if ((TimeSig.wGridsPerBeat == 3) || (TimeSig.wGridsPerBeat == 6) ||
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(TimeSig.wGridsPerBeat == 9) || (TimeSig.wGridsPerBeat == 12))
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{
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// This is already in a triplet feel, so work in reverse.
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// Adjust the timing, as set by the lStrength parameter.
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// lStrength is a range from 0 for no swing to 100 for full swing.
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// We are moving from grids 0,1,2,3,4,5... in triplet feel to grids
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// 0,1,2,4,5,6... in non-triplet feel.
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// So, the notes need to be adjusted in time in either direction.
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// When we change the time, we clear the DMUS_PMSGF_REFTIME flag,
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// telling the performance to recalculate the reference time stamp
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// in the event when it is requeued.
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static long lFromTriplet[12] = { 0,1,2,4,5,6,8,9,10,12,13,14 };
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if (pNote->bGrid < 12)
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{
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// Calculate the position we are moving to.
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long lTwoplet = ((lGrid * 3) / 4) * lFromTriplet[pNote->bGrid];
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// Calculate the position we are moving from.
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lGrid *= pNote->bGrid;
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// Calculate the new time. Note that we inverse strength since we are going from triplet.
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pNote->mtTime += ((100 - lStrength) * (lTwoplet - lGrid)) / 100;
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pNote->dwFlags &= ~DMUS_PMSGF_REFTIME;
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}
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}
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else if (TimeSig.wGridsPerBeat <= 16)
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{
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// Adjust the timing, as set by the lStrength parameter.
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// lStrength is a range from 0 for no swing to 100 for full swing.
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// We are moving from grids 0,1,2,3 in straight ahead feel to grids
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// 0,1,2 in triplet feel.
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// So, the notes need to be adjusted in time in either direction.
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// When we change the time, we clear the DMUS_PMSGF_REFTIME flag,
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// telling the performance to recalculate the reference time stamp
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// in the event when it is requeued.
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static long lToTriplet[16] = { 0,1,2,2,3,4,5,5,6,7,8,8,9,10,11,11 };
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if (pNote->bGrid < 16)
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{
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// Calculate the position we are moving to.
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long lTriplet = ((lGrid * 4) / 3) * lToTriplet[pNote->bGrid];
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// Calculate the position we are moving from.
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Trace(0,"%ld,%ld,%ld,%ld\t%ld,%ld,%ld\t",
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(long)TimeSig.bBeatsPerMeasure,(long)TimeSig.bBeat,(long)TimeSig.wGridsPerBeat,
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lGrid,(long)pNote->bBeat,(long)pNote->bGrid,(long)pNote->nOffset);
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lGrid *= pNote->bGrid;
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Trace(0,"%ld,%ld,%ld\n",lStrength,lTriplet,lGrid);
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pNote->mtTime += (lStrength * (lTriplet - lGrid)) / 100;
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pNote->dwFlags &= ~DMUS_PMSGF_REFTIME;
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}
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}
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}
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pPerf8->Release();
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}
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}
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return DMUS_S_REQUEUE;
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}
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STDMETHODIMP CSwingTool::Clone( IDirectMusicTool ** ppTool)
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{
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CSwingTool *pNew = new CSwingTool;
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if (pNew)
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{
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HRESULT hr = pNew->CopyParamsFromSource(this);
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if (SUCCEEDED(hr))
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{
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*ppTool = (IDirectMusicTool *) pNew;
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}
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else
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{
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delete pNew;
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}
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return hr;
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}
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else
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{
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return E_OUTOFMEMORY;
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}
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}
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STDMETHODIMP CSwingTool::SetStrength(DWORD dwStrength)
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{
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return SetParam(DMUS_SWING_STRENGTH,(float) dwStrength);
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}
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STDMETHODIMP CSwingTool::GetStrength(DWORD * pdwStrength)
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{
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return GetParamInt(DMUS_SWING_STRENGTH,MAX_REF_TIME,(long *) pdwStrength);
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}
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