1562 lines
40 KiB
C++
1562 lines
40 KiB
C++
//
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// Copyright (c) 1996-2001 Microsoft Corporation
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// CSynth.cpp
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//
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// READ THIS!!!!!!!!!!!!!!!!!!!!!!!!!!!
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//
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// 4530: C++ exception handler used, but unwind semantics are not enabled. Specify -GX
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//
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// We disable this because we use exceptions and do *not* specify -GX (USE_NATIVE_EH in
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// sources).
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//
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// The one place we use exceptions is around construction of objects that call
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// InitializeCriticalSection. We guarantee that it is safe to use in this case with
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// the restriction given by not using -GX (automatic objects in the call chain between
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// throw and handler are not destructed). Turning on -GX buys us nothing but +10% to code
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// size because of the unwind code.
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//
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// Any other use of exceptions must follow these restrictions or -GX must be turned on.
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//
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// READ THIS!!!!!!!!!!!!!!!!!!!!!!!!!!!
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//
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#pragma warning(disable:4530)
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#ifdef DMSYNTH_MINIPORT
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#include "common.h"
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#else
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#include "simple.h"
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#include <mmsystem.h>
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#include "dsoundp.h"
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#include <dmusicc.h>
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#include <dmusics.h>
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#include "synth.h"
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#include "CSynth.h"
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#ifdef REVERB_ENABLED
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#include "sverb.h"
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#endif
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#include "debug.h"
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#endif
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#include "dsoundp.h" // For IDirectSoundSynthSink
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#ifdef _X86_
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#define MMX_ENABLED 1
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#endif
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#ifdef MMX_ENABLED
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BOOL MultiMediaInstructionsSupported();
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#endif
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CSynth::CSynth()
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{
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DWORD nIndex;
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CVoice *pVoice;
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m_fCSInitialized = FALSE;
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::InitializeCriticalSection(&m_CriticalSection);
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// Note: on pre-Blackcomb OS's, this call can raise an exception; if it
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// ever pops in stress, we can add an exception handler and retry loop.
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m_fCSInitialized = TRUE;
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for (nIndex = 0;nIndex < MAX_NUM_VOICES;nIndex++)
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{
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pVoice = new CVoice;
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if (pVoice != NULL)
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{
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m_VoicesFree.AddHead(pVoice);
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}
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}
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for (nIndex = 0;nIndex < NUM_EXTRA_VOICES;nIndex++)
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{
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pVoice = new CVoice;
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if (pVoice != NULL)
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{
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m_VoicesExtra.AddHead(pVoice);
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}
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}
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m_fReverbActive = FALSE;
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m_pCoefs = NULL;
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m_pStates = NULL;
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m_ReverbParams.fInGain = 0.0;
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m_ReverbParams.fReverbMix = -10.0;
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m_ReverbParams.fReverbTime = 1000.0;
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m_ReverbParams.fHighFreqRTRatio = (float) 0.001;
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m_ppControl = NULL;
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m_dwControlCount = 0;
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m_nMaxVoices = MAX_NUM_VOICES;
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m_nExtraVoices = NUM_EXTRA_VOICES;
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m_stLastStats = 0;
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m_fAllowPanWhilePlayingNote = TRUE;
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m_fAllowVolumeChangeWhilePlayingNote = TRUE;
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ResetPerformanceStats();
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m_stLastTime = 0;
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m_dwSampleRate = SAMPLE_RATE_22;
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SetSampleRate(SAMPLE_RATE_22);
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SetStereoMode(BUFFERFLAG_INTERLEAVED);
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SetGainAdjust(600);
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m_sfMMXEnabled = FALSE;
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#ifdef MMX_ENABLED
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m_sfMMXEnabled = MultiMediaInstructionsSupported();
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#endif // MMX_ENABLED
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}
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CSynth::~CSynth()
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{
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CVoice *pVoice;
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if (m_fCSInitialized)
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{
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// If CS never initialized, nothing else will have been set up
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//
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Close();
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while (pVoice = m_VoicesInUse.RemoveHead())
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{
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delete pVoice;
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}
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while (pVoice = m_VoicesFree.RemoveHead())
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{
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delete pVoice;
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}
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while (pVoice = m_VoicesExtra.RemoveHead())
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{
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delete pVoice;
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}
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DeleteCriticalSection(&m_CriticalSection);
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}
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}
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short CSynth::ChangeVoiceCount(CVoiceList *pList,short nOld,short nCount)
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{
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if (nCount > nOld)
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{
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short nNew = nCount - nOld;
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for (;nNew != 0; nNew--)
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{
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CVoice *pVoice = new CVoice;
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if (pVoice != NULL)
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{
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pList->AddHead(pVoice);
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}
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}
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}
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else
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{
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short nNew = nOld - nCount;
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for (;nNew > 0; nNew--)
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{
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CVoice *pVoice = pList->RemoveHead();
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if (pVoice != NULL)
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{
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delete pVoice;
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}
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else
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{
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nCount += nNew;
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break;
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}
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}
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}
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return nCount;
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}
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HRESULT CSynth::SetMaxVoices(short nVoices,short nTempVoices)
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{
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if (nVoices < 1)
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{
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nVoices = 1;
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}
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if (nTempVoices < 1)
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{
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nTempVoices = 1;
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}
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::EnterCriticalSection(&m_CriticalSection);
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m_nMaxVoices = ChangeVoiceCount(&m_VoicesFree,m_nMaxVoices,nVoices);
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m_nExtraVoices = ChangeVoiceCount(&m_VoicesExtra,m_nExtraVoices,nTempVoices);
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::LeaveCriticalSection(&m_CriticalSection);
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return S_OK;
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}
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HRESULT CSynth::SetNumChannelGroups(DWORD dwCableCount)
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{
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HRESULT hr = S_OK;
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CControlLogic **ppControl;
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if ((dwCableCount < 1) || (dwCableCount > MAX_CHANNEL_GROUPS))
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{
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Trace(1,"Error: Request to set synth to %ld channel groups is invalid.\n",dwCableCount);
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return E_INVALIDARG;
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}
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::EnterCriticalSection(&m_CriticalSection);
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if (m_dwControlCount != dwCableCount)
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{
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try
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{
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ppControl = new CControlLogic *[dwCableCount];
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}
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catch( ... )
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{
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ppControl = NULL;
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}
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if (ppControl)
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{
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DWORD dwX;
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for (dwX = 0; dwX < dwCableCount; dwX++)
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{
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ppControl[dwX] = NULL;
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}
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if (m_dwControlCount < dwCableCount)
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{
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for (dwX = 0; dwX < m_dwControlCount; dwX++)
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{
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ppControl[dwX] = m_ppControl[dwX];
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}
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for (;dwX < dwCableCount; dwX++)
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{
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try
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{
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ppControl[dwX] = new CControlLogic;
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}
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catch( ... )
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{
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ppControl[dwX] = NULL;
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}
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if (ppControl[dwX])
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{
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hr = ppControl[dwX]->Init(&m_Instruments, this);
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if (FAILED(hr))
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{
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delete ppControl[dwX];
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ppControl[dwX] = NULL;
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dwCableCount = dwX;
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break;
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}
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ppControl[dwX]->SetGainAdjust(m_vrGainAdjust);
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}
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else
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{
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dwCableCount = dwX;
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break;
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}
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}
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}
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else
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{
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AllNotesOff();
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for (dwX = 0; dwX < dwCableCount; dwX++)
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{
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ppControl[dwX] = m_ppControl[dwX];
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}
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for (; dwX < m_dwControlCount; dwX++)
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{
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if (m_ppControl[dwX])
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{
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delete m_ppControl[dwX];
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}
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}
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}
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if (m_ppControl)
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{
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delete[] m_ppControl;
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}
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m_ppControl = ppControl;
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m_dwControlCount = dwCableCount;
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}
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else
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{
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hr = E_OUTOFMEMORY;
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}
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}
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::LeaveCriticalSection(&m_CriticalSection);
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return hr;
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}
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void CSynth::SetGainAdjust(VREL vrGainAdjust)
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{
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DWORD idx;
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m_vrGainAdjust = vrGainAdjust;
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::EnterCriticalSection(&m_CriticalSection);
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for (idx = 0; idx < m_dwControlCount; idx++)
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{
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m_ppControl[idx]->SetGainAdjust(m_vrGainAdjust);
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}
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::LeaveCriticalSection(&m_CriticalSection);
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}
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HRESULT CSynth::SetReverb(DMUS_WAVES_REVERB_PARAMS *pParams)
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{
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m_ReverbParams = *pParams;
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if (m_pCoefs)
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{
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#ifdef REVERB_ENABLED
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::SetSVerb(m_ReverbParams.fInGain,m_ReverbParams.fReverbMix,
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m_ReverbParams.fReverbTime,m_ReverbParams.fHighFreqRTRatio,m_pCoefs );
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#endif
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}
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return S_OK;;
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}
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void CSynth::SetReverbActive(BOOL fReverb)
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{
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::EnterCriticalSection(&m_CriticalSection);
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#ifdef REVERB_ENABLED
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if (m_fReverbActive != fReverb)
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{
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if (m_fReverbActive = fReverb)
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{
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if (!m_pCoefs)
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{
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long lSize = GetCoefsSize();
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m_pCoefs = (void *) malloc(lSize);
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lSize = GetStatesSize();
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m_pStates = (long *) malloc(lSize);
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if (m_pCoefs && m_pStates)
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{
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memset((void *) m_pStates,0,lSize);
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InitSVerb( (float) m_dwSampleRate, m_pCoefs);
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InitSVerbStates( m_pStates );
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SetReverb(&m_ReverbParams);
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}
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}
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else if (m_pStates)
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{
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InitSVerbStates( m_pStates );
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}
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}
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}
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#else
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m_fReverbActive = FALSE;
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#endif
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::LeaveCriticalSection(&m_CriticalSection);
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}
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void CSynth::GetReverb(DMUS_WAVES_REVERB_PARAMS *pParams)
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{
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*pParams = m_ReverbParams;
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}
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BOOL CSynth::IsReverbActive()
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{
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return m_fReverbActive;
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}
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HRESULT CSynth::Open(DWORD dwCableCount, DWORD dwVoices, BOOL fReverb)
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{
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HRESULT hr = S_OK;
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if ((dwCableCount < 1) || (dwCableCount > MAX_CHANNEL_GROUPS))
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{
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Trace(1,"Error: Request to open synth with %ld channel groups is invalid.\n",dwCableCount);
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return E_INVALIDARG;
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}
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if (m_ppControl)
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{
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Trace(1,"Error: Request to open synth failed because synth was already opened.\n");
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return E_FAIL; // Already opened.
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}
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::EnterCriticalSection(&m_CriticalSection);
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hr = SetNumChannelGroups(dwCableCount);
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if (SUCCEEDED(hr))
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{
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short nTemp = (short) dwVoices / 4;
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if (nTemp < 4) nTemp = 4;
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SetMaxVoices((short) dwVoices, nTemp);
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}
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SetReverbActive(fReverb);
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m_vrGainAdjust = 0;
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::LeaveCriticalSection(&m_CriticalSection);
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return hr;
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}
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HRESULT CSynth::Close()
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{
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::EnterCriticalSection(&m_CriticalSection);
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AllNotesOff();
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DWORD dwX;
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for (dwX = 0; dwX < m_dwControlCount; dwX++)
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{
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if (m_ppControl[dwX])
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{
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delete m_ppControl[dwX];
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}
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}
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m_dwControlCount = 0;
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if (m_ppControl)
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{
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delete[] m_ppControl;
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m_ppControl = NULL;
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}
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m_stLastStats = 0;
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m_stLastTime = 0;
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m_fReverbActive = FALSE;
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#ifdef REVERB_ENABLED
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if (m_pCoefs)
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{
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free(m_pCoefs);
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m_pCoefs = NULL;
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}
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if (m_pStates)
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{
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free(m_pStates);
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m_pStates = NULL;
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}
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#endif
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::LeaveCriticalSection(&m_CriticalSection);
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return S_OK;
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}
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HRESULT CSynth::GetMaxVoices(
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short * pnMaxVoices, // Returns maximum number of allowed voices for continuous play.
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short * pnTempVoices ) // Returns number of extra voices for voice overflow.
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{
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if (pnMaxVoices != NULL)
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{
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*pnMaxVoices = m_nMaxVoices;
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}
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if (pnTempVoices != NULL)
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{
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*pnTempVoices = m_nExtraVoices;
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}
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return S_OK;
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}
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HRESULT CSynth::SetSampleRate(
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DWORD dwSampleRate)
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{
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HRESULT hr = S_OK;
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// Can't set the sample rate to 0
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if (dwSampleRate == 0)
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{
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Trace(1,"Error: Request to set sample rate to 0 failed.\n");
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return E_INVALIDARG;
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}
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::EnterCriticalSection(&m_CriticalSection);
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AllNotesOff();
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if ( m_dwSampleRate || dwSampleRate )
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{
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m_stLastTime *= dwSampleRate;
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m_stLastTime /= m_dwSampleRate;
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}
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//>>>>>>>>>>> why is this commented out????
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// m_stLastTime = MulDiv(m_stLastTime,dwSampleRate,m_dwSampleRate);
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m_stLastStats = 0;
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m_dwSampleRate = dwSampleRate;
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m_stMinSpan = dwSampleRate / 100; // 10 ms.
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m_stMaxSpan = (dwSampleRate + 19) / 20; // 50 ms.
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::LeaveCriticalSection(&m_CriticalSection);
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m_Instruments.SetSampleRate(dwSampleRate);
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return hr;
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}
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HRESULT CSynth::Activate(DWORD dwSampleRate, DWORD dwBufferFlags)
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{
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#ifdef REVERB_ENABLED
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if (m_fReverbActive && m_pStates && m_pCoefs)
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{
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InitSVerb( (float) m_dwSampleRate, m_pCoefs);
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InitSVerbStates( m_pStates );
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SetReverb(&m_ReverbParams);
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}
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#endif
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m_stLastTime = 0;
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SetSampleRate(dwSampleRate);
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SetStereoMode(dwBufferFlags);
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ResetPerformanceStats();
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return S_OK;
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}
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HRESULT CSynth::Deactivate()
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{
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AllNotesOff();
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return S_OK;
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}
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HRESULT CSynth::GetPerformanceStats(PerfStats *pStats)
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{
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if (pStats == NULL)
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{
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Trace(1,"Error: Null pointer passed for performance stats.\n");
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return E_POINTER;
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}
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*pStats = m_CopyStats;
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return (S_OK);
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}
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bool CSynth::BusIDToFunctionID(DWORD dwBusID, DWORD *pdwFunctionID, long *plPitchBends, DWORD *pdwIndex)
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{
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// This should only be called if the internal bus pointers exist and there is at least one buffer.
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assert(m_pdwBusIDs && m_pdwFuncIDs && m_plPitchBends && m_dwBufferCount);
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// Scan through the list of bus ids, looking for the match for dwBusID.
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for ( DWORD nIndexSinkIds = 0; nIndexSinkIds < m_dwBufferCount; nIndexSinkIds++ )
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{
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// Is this one it?
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if (m_pdwBusIDs[nIndexSinkIds] == dwBusID)
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{
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*pdwFunctionID = m_pdwFuncIDs[nIndexSinkIds];
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if (plPitchBends)
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*plPitchBends = m_plPitchBends[nIndexSinkIds];
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if (pdwIndex)
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*pdwIndex = nIndexSinkIds;
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return true;
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}
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}
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return false;
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}
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void CSynth::Mix(short **ppvBuffer, DWORD *pdwIDs, DWORD *pdwFuncIDs, long *plPitchBends, DWORD dwBufferCount, DWORD dwBufferFlags, DWORD dwLength, LONGLONG llPosition)
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{
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static BOOL fDidLast = FALSE;
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STIME stEndTime;
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CVoice *pVoice;
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CVoice *pNextVoice;
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long lNumVoices = 0;
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DWORD i;
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::EnterCriticalSection(&m_CriticalSection);
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// Store pointers to the id arrays so we can access them from BusIDToFunctionID.
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m_pdwBusIDs = pdwIDs;
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m_pdwFuncIDs = pdwFuncIDs;
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m_plPitchBends = plPitchBends;
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m_dwBufferCount = dwBufferCount;
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/* // Useful for debugging the incoming buses...
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static DWORD sdwCountDown = 0;
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if (!sdwCountDown)
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{
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for (DWORD dwIX = 0; dwIX < dwBufferCount; dwIX++)
|
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{
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Trace(0,"%ld:%ld->%ld\t",dwIX,pdwIDs[dwIX],pdwFuncIDs[dwIX]);
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}
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Trace(0,"\n");
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sdwCountDown = 100;
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}
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sdwCountDown--;*/
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|
|
LONG lTime = - (LONG)::GetTheCurrentTime();
|
|
|
|
stEndTime = llPosition + dwLength;
|
|
StealNotes(stEndTime);
|
|
DWORD dwX;
|
|
|
|
for ( i = 0; i < dwBufferCount; i++ )
|
|
{
|
|
// For interleaved buffers only the first buss is valid
|
|
if ( dwBufferFlags & BUFFERFLAG_INTERLEAVED && i > 0 )
|
|
{
|
|
break;
|
|
}
|
|
StartMix(ppvBuffer[i],dwLength,(dwBufferFlags&BUFFERFLAG_INTERLEAVED));
|
|
}
|
|
|
|
for (dwX = 0; dwX < m_dwControlCount; dwX++)
|
|
{
|
|
m_ppControl[dwX]->QueueNotes(llPosition, stEndTime);
|
|
m_ppControl[dwX]->QueueWaves(stEndTime);
|
|
}
|
|
pVoice = m_VoicesInUse.GetHead();
|
|
|
|
for (;pVoice != NULL;pVoice = pNextVoice)
|
|
{
|
|
if (pVoice->m_stWaveStopTime && (pVoice->m_stWaveStopTime < stEndTime))
|
|
{
|
|
pVoice->StopVoice(pVoice->m_stWaveStopTime);
|
|
}
|
|
pNextVoice = pVoice->GetNext();
|
|
pVoice->Mix(ppvBuffer, dwBufferFlags, dwLength, llPosition, stEndTime);
|
|
|
|
lNumVoices++;
|
|
|
|
if (pVoice->m_fInUse == FALSE)
|
|
{
|
|
m_VoicesInUse.Remove(pVoice);
|
|
m_VoicesFree.AddHead(pVoice);
|
|
|
|
if (pVoice->m_stStartTime < m_stLastStats)
|
|
{
|
|
m_BuildStats.dwTotalSamples += (long) (pVoice->m_stStopTime - m_stLastStats);
|
|
}
|
|
else
|
|
{
|
|
m_BuildStats.dwTotalSamples += (long) (pVoice->m_stStopTime - pVoice->m_stStartTime);
|
|
}
|
|
}
|
|
}
|
|
|
|
for (dwX = 0; dwX < m_dwControlCount; dwX++)
|
|
{
|
|
m_ppControl[dwX]->ClearMIDI(stEndTime);
|
|
}
|
|
|
|
#ifdef REVERB_ENABLED
|
|
if (m_fReverbActive && m_pCoefs && m_pStates && !(dwBufferFlags & BUFFERFLAG_MULTIBUFFER) )
|
|
{
|
|
if (dwBufferFlags & BUFFERFLAG_INTERLEAVED)
|
|
{
|
|
SVerbStereoToStereoShort(dwLength,ppvBuffer[0],ppvBuffer[0],m_pCoefs,m_pStates);
|
|
}
|
|
else
|
|
{
|
|
SVerbMonoToMonoShort(dwLength,ppvBuffer[0],ppvBuffer[0],m_pCoefs,m_pStates);
|
|
}
|
|
}
|
|
#endif
|
|
|
|
for ( i = 0; i < dwBufferCount; i++ )
|
|
{
|
|
// For interleaved buffers only the first buss is valid
|
|
if ( dwBufferFlags & BUFFERFLAG_INTERLEAVED && i > 0 )
|
|
{
|
|
break;
|
|
}
|
|
FinishMix(ppvBuffer[i],dwLength,(dwBufferFlags&BUFFERFLAG_INTERLEAVED));
|
|
}
|
|
|
|
if (stEndTime > m_stLastTime)
|
|
{
|
|
m_stLastTime = stEndTime;
|
|
}
|
|
|
|
lTime += ::GetTheCurrentTime();
|
|
|
|
m_BuildStats.dwTotalTime += lTime;
|
|
|
|
if ((m_stLastStats + m_dwSampleRate) <= m_stLastTime)
|
|
{
|
|
DWORD dwElapsed = (DWORD) (m_stLastTime - m_stLastStats);
|
|
pVoice = m_VoicesInUse.GetHead();
|
|
|
|
for (;pVoice != NULL;pVoice = pVoice->GetNext())
|
|
{
|
|
if (pVoice->m_stStartTime < m_stLastStats)
|
|
{
|
|
m_BuildStats.dwTotalSamples += dwElapsed;
|
|
}
|
|
else
|
|
{
|
|
m_BuildStats.dwTotalSamples += (long) (m_stLastTime - pVoice->m_stStartTime);
|
|
}
|
|
}
|
|
|
|
if (dwElapsed == 0)
|
|
dwElapsed = 1;
|
|
|
|
if (m_BuildStats.dwTotalSamples == 0)
|
|
m_BuildStats.dwTotalSamples = 1;
|
|
|
|
m_BuildStats.dwVoices =
|
|
(m_BuildStats.dwTotalSamples + (dwElapsed >> 1)) / dwElapsed;
|
|
{
|
|
m_BuildStats.dwCPU = MulDiv(m_BuildStats.dwTotalTime,
|
|
m_dwSampleRate, dwElapsed);
|
|
}
|
|
|
|
m_CopyStats = m_BuildStats;
|
|
memset(&m_BuildStats, 0, sizeof(m_BuildStats));
|
|
m_stLastStats = m_stLastTime;
|
|
}
|
|
|
|
m_pdwBusIDs = NULL;
|
|
m_pdwFuncIDs = NULL;
|
|
m_plPitchBends = NULL;
|
|
m_dwBufferCount = 0;
|
|
|
|
::LeaveCriticalSection(&m_CriticalSection);
|
|
}
|
|
|
|
CVoice *CSynth::OldestVoice()
|
|
|
|
{
|
|
CVoice *pVoice;
|
|
CVoice *pBest = NULL;
|
|
pVoice = m_VoicesInUse.GetHead();
|
|
pBest = pVoice;
|
|
if (pBest)
|
|
{
|
|
pVoice = pVoice->GetNext();
|
|
for (;pVoice;pVoice = pVoice->GetNext())
|
|
{
|
|
if (!pVoice->m_fTag)
|
|
{
|
|
if (pBest->m_fTag)
|
|
{
|
|
pBest = pVoice;
|
|
}
|
|
else
|
|
{
|
|
if (pVoice->m_dwPriority <= pBest->m_dwPriority)
|
|
{
|
|
if (pVoice->m_fNoteOn)
|
|
{
|
|
if (pBest->m_fNoteOn)
|
|
{
|
|
if (pBest->m_stStartTime > pVoice->m_stStartTime)
|
|
{
|
|
pBest = pVoice;
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if (pBest->m_fNoteOn ||
|
|
(pBest->m_vrVolume > pVoice->m_vrVolume))
|
|
{
|
|
pBest = pVoice;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
if (pBest->m_fTag)
|
|
{
|
|
pBest = NULL;
|
|
}
|
|
}
|
|
return pBest;
|
|
}
|
|
|
|
CVoice *CSynth::StealVoice(DWORD dwPriority)
|
|
|
|
{
|
|
CVoice *pVoice;
|
|
CVoice *pBest = NULL;
|
|
pVoice = m_VoicesInUse.GetHead();
|
|
for (;pVoice != NULL;pVoice = pVoice->GetNext())
|
|
{
|
|
if (pVoice->m_dwPriority <= dwPriority)
|
|
{
|
|
if (!pBest)
|
|
{
|
|
pBest = pVoice;
|
|
}
|
|
else
|
|
{
|
|
if (pVoice->m_fNoteOn == FALSE)
|
|
{
|
|
if ((pBest->m_fNoteOn == TRUE) ||
|
|
(pBest->m_vrVolume > pVoice->m_vrVolume))
|
|
{
|
|
pBest = pVoice;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if (pBest->m_stStartTime > pVoice->m_stStartTime)
|
|
{
|
|
pBest = pVoice;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
if (pBest != NULL)
|
|
{
|
|
pBest->ClearVoice();
|
|
pBest->m_fInUse = FALSE;
|
|
m_VoicesInUse.Remove(pBest);
|
|
|
|
pBest->SetNext(NULL);
|
|
}
|
|
return pBest;
|
|
}
|
|
|
|
void CSynth::QueueVoice(CVoice *pVoice)
|
|
|
|
/* This function queues a voice in the list of currently
|
|
synthesizing voices. It places them in the queue so that
|
|
the higher priority voices are later in the queue. This
|
|
allows the note stealing algorithm to take off the top of
|
|
the queue.
|
|
And, we want older playing notes to be later in the queue
|
|
so the note ons and offs overlap properly. So, the queue is
|
|
sorted in priority order with older notes later within one
|
|
priority level.
|
|
*/
|
|
|
|
{
|
|
CVoice *pScan = m_VoicesInUse.GetHead();
|
|
CVoice *pNext = NULL;
|
|
if (!pScan) // Empty list?
|
|
{
|
|
m_VoicesInUse.AddHead(pVoice);
|
|
return;
|
|
}
|
|
if (pScan->m_dwPriority > pVoice->m_dwPriority)
|
|
{ // Are we lower priority than the head of the list?
|
|
m_VoicesInUse.AddHead(pVoice);
|
|
return;
|
|
}
|
|
|
|
pNext = pScan->GetNext();
|
|
for (;pNext;)
|
|
{
|
|
if (pNext->m_dwPriority > pVoice->m_dwPriority)
|
|
{
|
|
// Lower priority than next in the list.
|
|
pScan->SetNext(pVoice);
|
|
pVoice->SetNext(pNext);
|
|
return;
|
|
}
|
|
pScan = pNext;
|
|
pNext = pNext->GetNext();
|
|
}
|
|
// Reached the end of the list.
|
|
pScan->SetNext(pVoice);
|
|
pVoice->SetNext(NULL);
|
|
}
|
|
|
|
void CSynth::StealNotes(STIME stTime)
|
|
|
|
{
|
|
CVoice *pVoice;
|
|
long lToMove = m_nExtraVoices - m_VoicesExtra.GetCount();
|
|
if (lToMove > 0)
|
|
{
|
|
for (;lToMove > 0;)
|
|
{
|
|
pVoice = m_VoicesFree.RemoveHead();
|
|
if (pVoice != NULL)
|
|
{
|
|
m_VoicesExtra.AddHead(pVoice);
|
|
lToMove--;
|
|
}
|
|
else break;
|
|
}
|
|
if (lToMove > 0)
|
|
{
|
|
pVoice = m_VoicesInUse.GetHead();
|
|
for (;pVoice;pVoice = pVoice->GetNext())
|
|
{
|
|
if (pVoice->m_fTag) // Voice is already slated to be returned.
|
|
{
|
|
lToMove--;
|
|
}
|
|
}
|
|
for (;lToMove > 0;lToMove--)
|
|
{
|
|
pVoice = OldestVoice();
|
|
if (pVoice != NULL)
|
|
{
|
|
pVoice->QuickStopVoice(stTime);
|
|
m_BuildStats.dwNotesLost++;
|
|
}
|
|
else break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
#ifndef i386
|
|
void CSynth::StartMix(short *pBuffer,DWORD dwLength, BOOL bInterleaved)
|
|
{
|
|
DWORD dwIndex = 0;
|
|
DWORD dwLen = dwLength << bInterleaved;
|
|
|
|
for (; dwIndex < dwLen; dwIndex++)
|
|
{
|
|
pBuffer[dwIndex] <<= 1;
|
|
}
|
|
}
|
|
#else
|
|
void CSynth::StartMix(short *pBuffer,DWORD dwLength, BOOL bInterleaved)
|
|
{
|
|
DWORD dwIndex;
|
|
DWORD dwLen = dwLength << bInterleaved;
|
|
|
|
dwIndex = 0;
|
|
|
|
if (m_sfMMXEnabled && dwLen >= 16)
|
|
{
|
|
dwIndex = (dwLen & ~0x0000000F);
|
|
|
|
_asm {
|
|
mov eax, dwIndex
|
|
mov ebx, pBuffer
|
|
lea ebx, [ebx+eax*2] // move to the end to start...
|
|
neg eax
|
|
|
|
TopOfLoop:
|
|
movq mm0, [ebx+eax*2]
|
|
movq mm1, [ebx+eax*2+8]
|
|
|
|
psraw mm0, 1
|
|
|
|
movq mm2, [ebx+eax*2+16]
|
|
|
|
psraw mm1, 1
|
|
|
|
movq mm3, [ebx+eax*2+24]
|
|
|
|
psraw mm2, 1
|
|
|
|
movq [ebx+eax*2], mm0
|
|
|
|
psraw mm3, 1
|
|
|
|
movq [ebx+eax*2+8], mm1
|
|
movq [ebx+eax*2+16], mm2
|
|
movq [ebx+eax*2+24], mm3
|
|
|
|
add eax, 16
|
|
jl TopOfLoop
|
|
|
|
emms
|
|
}
|
|
}
|
|
|
|
for (; dwIndex < dwLen; dwIndex++)
|
|
{
|
|
pBuffer[dwIndex] <<= 1;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
//////////////////////////////////////////////////////////////////
|
|
// FinishMix - C Base for Optimized code
|
|
#ifndef i386
|
|
void CSynth::FinishMix(short *pBuffer,DWORD dwLength, BOOL bInterleaved)
|
|
|
|
{
|
|
DWORD dwIndex = 0;
|
|
long lMax = (long) m_BuildStats.dwMaxAmplitude;
|
|
long lTemp;
|
|
DWORD dwLen = dwLength << bInterleaved;
|
|
|
|
for (; dwIndex < dwLen; dwIndex++)
|
|
{
|
|
lTemp = pBuffer[dwIndex];
|
|
lTemp <<= 1;
|
|
|
|
if (lTemp < -32767) lTemp = -32767;
|
|
if (lTemp > 32767) lTemp = 32767;
|
|
|
|
pBuffer[dwIndex] = (short) lTemp;
|
|
if (lTemp > lMax)
|
|
{
|
|
lMax = lTemp;
|
|
}
|
|
else if (lTemp < 0 && -lTemp > lMax)
|
|
{
|
|
lMax = -lTemp;
|
|
}
|
|
}
|
|
m_BuildStats.dwMaxAmplitude = lMax;
|
|
}
|
|
#else
|
|
void CSynth::FinishMix(short *pBuffer,DWORD dwLength, BOOL bInterleaved)
|
|
{
|
|
DWORD dwIndex;
|
|
long lMax = (long) m_BuildStats.dwMaxAmplitude;
|
|
long lTemp;
|
|
DWORD dwLen = dwLength << bInterleaved;
|
|
|
|
short PosMax, NegMax;
|
|
|
|
PosMax = (short) lMax;
|
|
NegMax = - (short) lMax;
|
|
|
|
dwIndex = 0;
|
|
|
|
if (m_sfMMXEnabled && dwLen >= 4)
|
|
{
|
|
dwIndex = (dwLen & ~0x3);
|
|
|
|
_asm {
|
|
mov eax, dwIndex
|
|
mov ebx, pBuffer
|
|
lea ebx, [ebx+eax*2] // move to the end to start...
|
|
neg eax
|
|
pxor mm0, mm0
|
|
movsx ecx, WORD PTR PosMax
|
|
movsx edx, WORD PTR NegMax
|
|
Start:
|
|
movq mm1, QWORD PTR [ebx+eax*2]
|
|
movq mm2, mm1
|
|
punpcklwd mm1, mm0
|
|
punpckhwd mm2, mm0
|
|
pslld mm1, 16
|
|
pslld mm2, 16
|
|
psrad mm1, 15
|
|
psrad mm2, 15
|
|
packssdw mm1, mm2
|
|
movq QWORD PTR [ebx+eax*2], mm1
|
|
movsx esi, WORD PTR [ebx+eax*2]
|
|
movsx edi, WORD PTR [ebx+eax*2+2]
|
|
|
|
cmp esi, ecx
|
|
jg Max1
|
|
Max10: cmp edi, edx
|
|
jl Min1
|
|
|
|
Min10: movsx esi, WORD PTR [ebx+eax*2+4]
|
|
cmp edi, ecx
|
|
jg Max2
|
|
Max20: cmp edi, edx
|
|
jl Min2
|
|
|
|
Min20: movsx edi, WORD PTR [ebx+eax*2+6]
|
|
cmp esi, ecx
|
|
jg Max3
|
|
Max30: cmp esi, edx
|
|
jl Min3
|
|
|
|
Min30: cmp edi, ecx
|
|
jg Max4
|
|
Max40: cmp edi, edx
|
|
jl Min4
|
|
|
|
Min40: add eax, 4
|
|
jl Start
|
|
jmp Finished
|
|
Max1:
|
|
mov ecx, esi
|
|
jmp Max10
|
|
Max2:
|
|
mov ecx, edi
|
|
jmp Max20
|
|
Max3:
|
|
mov ecx, esi
|
|
jmp Max30
|
|
Max4:
|
|
mov ecx, edi
|
|
jmp Max40
|
|
Min1:
|
|
mov edx, esi
|
|
jmp Min10
|
|
Min2:
|
|
mov edx, edi
|
|
jmp Min20
|
|
Min3:
|
|
mov edx, esi
|
|
jmp Min30
|
|
Min4:
|
|
mov edx, edi
|
|
jmp Min40
|
|
Finished:
|
|
emms
|
|
mov WORD PTR PosMax, cx
|
|
mov WORD PTR NegMax, dx
|
|
}
|
|
if (lMax < PosMax)
|
|
lMax = PosMax;
|
|
|
|
if (lMax < -NegMax)
|
|
lMax = -NegMax;
|
|
}
|
|
|
|
for (; dwIndex < dwLen; dwIndex++)
|
|
{
|
|
lTemp = pBuffer[dwIndex];
|
|
lTemp <<= 1;
|
|
|
|
if (lTemp < -32767) lTemp = -32767;
|
|
if (lTemp > 32767) lTemp = 32767;
|
|
|
|
pBuffer[dwIndex] = (short) lTemp;
|
|
if (lTemp > lMax)
|
|
{
|
|
lMax = lTemp;
|
|
}
|
|
else if (lTemp < 0 && -lTemp > lMax)
|
|
{
|
|
lMax = -lTemp;
|
|
}
|
|
}
|
|
|
|
m_BuildStats.dwMaxAmplitude = lMax;
|
|
}
|
|
#endif
|
|
|
|
HRESULT CSynth::Unload(HANDLE hDownload,
|
|
HRESULT ( CALLBACK *lpFreeMemory)(HANDLE,HANDLE),
|
|
HANDLE hUserData)
|
|
{
|
|
return m_Instruments.Unload( hDownload, lpFreeMemory, hUserData);
|
|
}
|
|
|
|
HRESULT CSynth::Download(LPHANDLE phDownload, void * pdwData, LPBOOL bpFree)
|
|
|
|
{
|
|
return m_Instruments.Download( phDownload, (DWORD *) pdwData, bpFree);
|
|
}
|
|
|
|
HRESULT CSynth::PlayBuffer(IDirectMusicSynthSink *pSynthSink, REFERENCE_TIME rt, LPBYTE lpBuffer, DWORD cbBuffer, ULONG ulCable)
|
|
|
|
{
|
|
STIME stTime;
|
|
|
|
::EnterCriticalSection(&m_CriticalSection);
|
|
|
|
if ( rt == 0 ) // Special case of time == 0.
|
|
{
|
|
stTime = m_stLastTime;
|
|
}
|
|
else
|
|
{
|
|
pSynthSink->RefTimeToSample(rt, &stTime);
|
|
}
|
|
|
|
PlayBuffer(stTime, rt, lpBuffer, cbBuffer, ulCable);
|
|
|
|
::LeaveCriticalSection(&m_CriticalSection);
|
|
return S_OK;
|
|
}
|
|
|
|
HRESULT CSynth::PlayBuffer(IDirectSoundSynthSink *pSynthSink, REFERENCE_TIME rt, LPBYTE lpBuffer, DWORD cbBuffer, ULONG ulCable)
|
|
|
|
{
|
|
STIME stTime;
|
|
|
|
::EnterCriticalSection(&m_CriticalSection);
|
|
|
|
if ( rt == 0 ) // Special case of time == 0.
|
|
{
|
|
stTime = m_stLastTime;
|
|
}
|
|
else
|
|
{
|
|
pSynthSink->RefToSampleTime(rt, &stTime);
|
|
}
|
|
|
|
//Trace(0,"Reftime[%lx%08lx] LastTime[%lx%08lx] SampleTime[%lx%08lx]\n\r",(DWORD)(rt>>32),(DWORD)(rt&0x00000000ffffffff),(DWORD)(m_stLastTime>>32),(DWORD)(m_stLastTime&0x00000000ffffffff),(DWORD)(stTime>>32),(DWORD)(stTime&0x00000000ffffffff));
|
|
|
|
PlayBuffer(stTime, rt, lpBuffer, cbBuffer, ulCable);
|
|
|
|
::LeaveCriticalSection(&m_CriticalSection);
|
|
return S_OK;
|
|
}
|
|
|
|
HRESULT CSynth::PlayBuffer(STIME stTime, REFERENCE_TIME rt, LPBYTE lpBuffer, DWORD cbBuffer, ULONG ulCable)
|
|
|
|
{
|
|
::EnterCriticalSection(&m_CriticalSection);
|
|
|
|
if (cbBuffer <= sizeof(DWORD))
|
|
{
|
|
#ifdef DBG
|
|
if (stTime < m_stLastTime)
|
|
{
|
|
static DWORD dwFailed = 0;
|
|
if ((lpBuffer[0] & 0xF0) == MIDI_NOTEON)
|
|
{
|
|
if (!dwFailed)
|
|
{
|
|
Trace(2,"Warning: Note On arrived too late to the synth, synth has mixed ahead by %ld samples. This could be caused by latency calculated too low.\n",
|
|
(long) (m_stLastTime - stTime));
|
|
dwFailed = 100;
|
|
}
|
|
dwFailed--;
|
|
}
|
|
}
|
|
else if ((stTime - (10000 * 1000)) > m_stLastTime)
|
|
{
|
|
static DWORD dwFailed = 0;
|
|
if ((lpBuffer[0] & 0xF0) == MIDI_NOTEON)
|
|
{
|
|
if (!dwFailed)
|
|
{
|
|
Trace(2,"Warning: Note On at sample %ld, was stamped too late for synth, which is at mix time %ld, error is %ld samples\n",
|
|
(long) stTime, (long) m_stLastTime, (long) (m_stLastTime - stTime));
|
|
dwFailed = 100;
|
|
}
|
|
dwFailed--;
|
|
}
|
|
}
|
|
#endif
|
|
if (ulCable <= m_dwControlCount)
|
|
{
|
|
if (ulCable == 0) // Play all groups if 0.
|
|
{
|
|
for (; ulCable < m_dwControlCount; ulCable++)
|
|
{
|
|
m_ppControl[ulCable]->RecordMIDI(stTime,lpBuffer[0],
|
|
lpBuffer[1], lpBuffer[2]);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
m_ppControl[ulCable - 1]->RecordMIDI(stTime,lpBuffer[0],
|
|
lpBuffer[1], lpBuffer[2]);
|
|
|
|
}
|
|
}
|
|
else
|
|
{
|
|
Trace(1,"Error: MIDI event on channel group %ld is beyond range of %ld opened channel groups\n",
|
|
ulCable, m_dwControlCount);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if (ulCable <= m_dwControlCount)
|
|
{
|
|
if (ulCable == 0)
|
|
{
|
|
for (; ulCable < m_dwControlCount; ulCable++)
|
|
{
|
|
m_ppControl[ulCable]->RecordSysEx(cbBuffer,
|
|
&lpBuffer[0], stTime);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
m_ppControl[ulCable-1]->RecordSysEx(cbBuffer,
|
|
&lpBuffer[0], stTime);
|
|
}
|
|
}
|
|
}
|
|
|
|
::LeaveCriticalSection(&m_CriticalSection);
|
|
return S_OK;
|
|
}
|
|
|
|
// Sets the stereo mode for the synth
|
|
// this value is currently only being used
|
|
// to deterim whether one can pan or not.
|
|
HRESULT CSynth::SetStereoMode(
|
|
DWORD dwBufferFlags )
|
|
{
|
|
HRESULT hr = S_OK;
|
|
|
|
if (dwBufferFlags & BUFFERFLAG_INTERLEAVED )
|
|
{
|
|
m_dwStereo = TRUE;
|
|
}
|
|
else if (dwBufferFlags & BUFFERFLAG_MULTIBUFFER )
|
|
{
|
|
m_dwStereo = TRUE;
|
|
}
|
|
else
|
|
m_dwStereo = FALSE;
|
|
|
|
return hr;
|
|
}
|
|
|
|
void CSynth::ResetPerformanceStats()
|
|
|
|
{
|
|
m_BuildStats.dwNotesLost = 0;
|
|
m_BuildStats.dwTotalTime = 0;
|
|
m_BuildStats.dwVoices = 0;
|
|
m_BuildStats.dwTotalSamples = 0;
|
|
m_BuildStats.dwCPU = 0;
|
|
m_BuildStats.dwMaxAmplitude = 0;
|
|
m_CopyStats = m_BuildStats;
|
|
}
|
|
|
|
HRESULT CSynth::AllNotesOff()
|
|
|
|
{
|
|
CVoice *pVoice;
|
|
::EnterCriticalSection(&m_CriticalSection);
|
|
while (pVoice = m_VoicesInUse.RemoveHead())
|
|
{
|
|
pVoice->ClearVoice();
|
|
pVoice->m_fInUse = FALSE;
|
|
m_VoicesFree.AddHead(pVoice);
|
|
|
|
if (pVoice->m_stStartTime < m_stLastStats)
|
|
{
|
|
m_BuildStats.dwTotalSamples += (long) (pVoice->m_stStopTime - m_stLastStats);
|
|
}
|
|
else
|
|
{
|
|
m_BuildStats.dwTotalSamples += (long) (pVoice->m_stStopTime - pVoice->m_stStartTime);
|
|
}
|
|
}
|
|
::LeaveCriticalSection(&m_CriticalSection);
|
|
return (S_OK);
|
|
}
|
|
|
|
HRESULT CSynth::SetChannelPriority(
|
|
DWORD dwChannelGroup,
|
|
DWORD dwChannel,
|
|
DWORD dwPriority)
|
|
{
|
|
HRESULT hr = S_OK;
|
|
|
|
::EnterCriticalSection(&m_CriticalSection);
|
|
|
|
dwChannelGroup--;
|
|
if ((dwChannelGroup >= m_dwControlCount) || (dwChannel > 15))
|
|
{
|
|
Trace(1,"Error: Request to set channel priority on channel group %ld, channel %ld, is out of range.\n",
|
|
dwChannelGroup,dwChannel);
|
|
hr = E_INVALIDARG;
|
|
}
|
|
else
|
|
{
|
|
if (m_ppControl)
|
|
{
|
|
hr = m_ppControl[dwChannelGroup]->SetChannelPriority(dwChannel,dwPriority);
|
|
}
|
|
}
|
|
::LeaveCriticalSection(&m_CriticalSection);
|
|
|
|
return hr;
|
|
}
|
|
|
|
HRESULT CSynth::GetChannelPriority(
|
|
DWORD dwChannelGroup,
|
|
DWORD dwChannel,
|
|
LPDWORD pdwPriority)
|
|
{
|
|
HRESULT hr = S_OK;
|
|
|
|
::EnterCriticalSection(&m_CriticalSection);
|
|
|
|
dwChannelGroup--;
|
|
if ((dwChannelGroup >= m_dwControlCount) || (dwChannel > 15))
|
|
{
|
|
Trace(1,"Error: Request to get channel priority on channel group %ld, channel %ld, is out of range.\n",
|
|
dwChannelGroup,dwChannel);
|
|
hr = E_INVALIDARG;
|
|
}
|
|
else
|
|
{
|
|
if (m_ppControl)
|
|
{
|
|
hr = m_ppControl[dwChannelGroup]->GetChannelPriority(dwChannel,pdwPriority);
|
|
}
|
|
}
|
|
::LeaveCriticalSection(&m_CriticalSection);
|
|
|
|
return hr;
|
|
}
|
|
|
|
|
|
//////////////////////////////////////////////////////////
|
|
// Directx8 Methods
|
|
|
|
HRESULT CSynth::PlayVoice(
|
|
IDirectSoundSynthSink *pSynthSink,
|
|
REFERENCE_TIME rt,
|
|
DWORD dwVoiceId,
|
|
DWORD dwChannelGroup,
|
|
DWORD dwChannel,
|
|
DWORD dwDLId,
|
|
VREL vrVolume,
|
|
PREL prPitch,
|
|
SAMPLE_TIME stVoiceStart,
|
|
SAMPLE_TIME stLoopStart,
|
|
SAMPLE_TIME stLoopEnd
|
|
)
|
|
{
|
|
HRESULT hr = S_OK;
|
|
STIME stTime;
|
|
|
|
::EnterCriticalSection(&m_CriticalSection);
|
|
|
|
dwChannelGroup--;
|
|
if ((dwChannelGroup >= m_dwControlCount) || (dwChannel > 15))
|
|
{
|
|
Trace(1,"Error: Request to set play voice on channel group %ld, channel %ld, is out of range.\n",
|
|
dwChannelGroup,dwChannel);
|
|
hr = E_INVALIDARG;
|
|
}
|
|
|
|
if ( rt == 0 ) // Special case of time == 0.
|
|
{
|
|
stTime = m_stLastTime;
|
|
}
|
|
else
|
|
{
|
|
pSynthSink->RefToSampleTime(rt, &stTime);
|
|
}
|
|
|
|
CWaveArt *pWaveArt = m_Instruments.GetWaveArt(dwDLId);
|
|
if ( pWaveArt )
|
|
m_ppControl[dwChannelGroup]->RecordWaveEvent(
|
|
stTime,
|
|
(BYTE)(dwChannel & 0xF),
|
|
dwVoiceId,
|
|
vrVolume,
|
|
prPitch,
|
|
stVoiceStart,
|
|
stLoopStart,
|
|
stLoopEnd,
|
|
pWaveArt);
|
|
|
|
::LeaveCriticalSection(&m_CriticalSection);
|
|
|
|
return hr;
|
|
}
|
|
|
|
HRESULT CSynth::StopVoice(
|
|
IDirectSoundSynthSink *pSynthSink,
|
|
REFERENCE_TIME rt,
|
|
DWORD dwVoiceId )
|
|
{
|
|
HRESULT hr = S_OK;
|
|
STIME stTime;
|
|
|
|
::EnterCriticalSection(&m_CriticalSection);
|
|
|
|
if ( rt == 0 ) // Special case of time == 0.
|
|
{
|
|
stTime = m_stLastTime;
|
|
}
|
|
else
|
|
{
|
|
pSynthSink->RefToSampleTime(rt, &stTime);
|
|
}
|
|
|
|
CVoice * pVoice = m_VoicesInUse.GetHead();
|
|
bool fFoundVoice = false;
|
|
for (;pVoice != NULL;pVoice = pVoice->GetNext())
|
|
{
|
|
if ( pVoice->m_dwVoiceId == dwVoiceId )
|
|
{
|
|
pVoice->m_stWaveStopTime = stTime;
|
|
fFoundVoice = true;
|
|
}
|
|
}
|
|
if (!fFoundVoice)
|
|
{
|
|
TraceI(2, "Warning: Synth couldn't find voice %d to stop.\n", dwVoiceId);
|
|
for (DWORD dwX = 0; dwX < m_dwControlCount; dwX++)
|
|
{
|
|
m_ppControl[dwX]->FlushWaveByStopTime(dwVoiceId, stTime);
|
|
}
|
|
}
|
|
|
|
::LeaveCriticalSection(&m_CriticalSection);
|
|
|
|
return hr;
|
|
}
|
|
|
|
HRESULT CSynth::GetVoiceState(
|
|
DWORD dwVoice[],
|
|
DWORD cbVoice,
|
|
DMUS_VOICE_STATE VoiceState[] )
|
|
{
|
|
HRESULT hr = E_FAIL;
|
|
|
|
::EnterCriticalSection(&m_CriticalSection);
|
|
|
|
for ( DWORD i = 0; i < cbVoice; i++ )
|
|
{
|
|
VoiceState[i].bExists = FALSE;
|
|
VoiceState[i].spPosition = 0;
|
|
|
|
CVoice * pVoice = m_VoicesInUse.GetHead();
|
|
for (;pVoice != NULL;pVoice = pVoice->GetNext())
|
|
{
|
|
if ( pVoice->m_dwVoiceId == dwVoice[i] )
|
|
{
|
|
VoiceState[i].bExists = TRUE;
|
|
VoiceState[i].spPosition = pVoice->GetCurrentPos();
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
::LeaveCriticalSection(&m_CriticalSection);
|
|
|
|
return S_OK;
|
|
}
|
|
|
|
HRESULT CSynth::Refresh(
|
|
DWORD dwDownloadID,
|
|
DWORD dwFlags)
|
|
{
|
|
HRESULT hr = S_OK;
|
|
|
|
::EnterCriticalSection(&m_CriticalSection);
|
|
|
|
CWave *pWave = m_Instruments.GetWave(dwDownloadID);
|
|
if ( pWave )
|
|
{
|
|
if ( pWave->m_bValid )
|
|
{
|
|
Trace(1,"Error: Attempting to validate already validated streaming buffer\n\r");
|
|
hr = E_FAIL;
|
|
}
|
|
|
|
if ( pWave->m_bActive )
|
|
{
|
|
Trace(1,"Error: Attempting to validate active playing streaming buffer\n\r");
|
|
hr = E_FAIL;
|
|
}
|
|
|
|
if (SUCCEEDED(hr))
|
|
{
|
|
pWave->m_bValid = TRUE;
|
|
|
|
if (pWave->m_bSampleType == SFORMAT_8)
|
|
{
|
|
DWORD dwX;
|
|
char *pData = (char *) pWave->m_pnWave;
|
|
for (dwX = 0; dwX < pWave->m_dwSampleLength; dwX++)
|
|
{
|
|
pData[dwX] -= (char) 128;
|
|
}
|
|
}
|
|
|
|
// Indicate that we did find a vaild download id
|
|
hr = S_OK;
|
|
}
|
|
}
|
|
|
|
::LeaveCriticalSection(&m_CriticalSection);
|
|
|
|
return hr;
|
|
}
|
|
|
|
HRESULT CSynth::AssignChannelToBuses(
|
|
DWORD dwChannelGroup,
|
|
DWORD dwChannel,
|
|
LPDWORD pdwBuses,
|
|
DWORD cBuses)
|
|
{
|
|
HRESULT hr = S_OK;
|
|
|
|
::EnterCriticalSection(&m_CriticalSection);
|
|
|
|
//>>>>>>> Probably need a better check here since panning is only valid for left and right?
|
|
|
|
dwChannelGroup--;
|
|
if ((dwChannelGroup >= m_dwControlCount) || (dwChannel > 15))
|
|
{
|
|
hr = E_INVALIDARG;
|
|
}
|
|
|
|
if (SUCCEEDED(hr))
|
|
{
|
|
hr = m_ppControl[dwChannelGroup]->AssignChannelToBuses(dwChannel, pdwBuses, cBuses);
|
|
}
|
|
|
|
::LeaveCriticalSection(&m_CriticalSection);
|
|
|
|
return hr;
|
|
}
|