/*
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| _ \ | || _ \| __// __//_ _/ | \/ || || _ \ | |
| |_| || || |> /| _| | <__ | | | |\/| || || |_| || |
|____/ |_||_|\_\|____\\____/ |_| |_| |_||_||____/ |_|
////////////////////////////////////////////////////////////////////////
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
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
Copyright (c) 2002-2003 by Carlos Jim�nez de Parga
All rights reserved.
For any suggestion or failure report, please contact me by:
e-mail: cjimenez@servitel.es
Note: I would appreciate very much if you could provide a brief description of your project,
as well as any report on bugs or errors. This will help me improve the code for the benefit of your
application and the other users
///////////////////////////////////////////////////////////////////////
Version: 2.1b
Module : COutputPort.cpp
Purpose: Code implementation for the COutput port class
Created: CJP / 02-08-2002
History: CJP / 03-25-2003
Update: 09/20/2002
1. Improved class destructors
2. Check member variables for NULL values before performing an operation
3. Restructured the class system
4. Better method to enumerate and select MIDI ports
5. Adapted the external thread to a pure virtual function
6. SysEx reception and sending enabled
7. Added flexible conversion functions
8. Find out how to activate the Microsoft software synth.
9. Added DLS support
Update: 03/25/2003
10. Added exception handling
11. Fixed bugs with channel groups
12. Redesigned class hierarchy
13. DirectMidi wrapped in the directmidi namespace
14. UNICODE/MBCS support for instruments and ports
15. Added DELAY effect to software synthesizer ports
16. Project released under GNU (General Public License) terms
*/
#include "CDirectMidi.h"
using namespace directmidi;
// Class constructor, member variables initialization
COutputPort::COutputPort():CMidiPort(DMUS_PC_OUTPUTCLASS)
{
m_pClock = NULL;
}
// Function to select and activate an Input MIDI port given an INFOPORT structure
HRESULT COutputPort::ActivatePort(LPINFOPORT InfoPort,DWORD dwSysExSize)
{
HRESULT hr = DM_FAILED;
TCHAR strMembrFunc[] = _T("COutputPort::ActivatePort");
if (m_pClock) throw CDMusicException(strMembrFunc,hr,__LINE__);
CMidiPort::ActivatePort(InfoPort,dwSysExSize);
if (FAILED(hr = m_pPort->GetLatencyClock(&m_pClock))) throw CDMusicException(strMembrFunc,hr,__LINE__);
// Instructs the port to compact DLS or wave-table memory
m_pPort->Compact();
return S_OK;
}
// This function removes the selected port
// and releases all their asociated interfaces for a new port selection
HRESULT COutputPort::ReleasePort()
{
HRESULT hr = DM_FAILED;
TCHAR strMembrFunc[] = _T("COutputPort::ReleasePort()");
if (m_pPort)
if (FAILED(hr = m_pPort->Activate(FALSE))) throw CDMusicException(strMembrFunc,hr,__LINE__);
SAFE_RELEASE(m_pPort);
SAFE_RELEASE(m_pBuffer);
SAFE_RELEASE(m_pClock);
return hr;
}
// Download an instrument to the port wave-table memory
HRESULT COutputPort::DownLoadInstrument(CInstrument &pInstrument)
{
HRESULT hr = DM_FAILED;
TCHAR strMembrFunc[] = _T("COutputPort::DownLoadInstrument()");
if ((m_pPort) && (pInstrument.m_pInstrument))
{
UnLoadInstrument(pInstrument); // Unload the instrument object in case is downloaded
// Download the instrument to the port and keep a reference to
// this instrument in the port with the m_pDownloadedInstrument
if (FAILED(hr = m_pPort->DownloadInstrument(pInstrument.m_pInstrument,
&pInstrument.m_pDownLoadedInstrument,NULL,0)))
throw CDMusicException(strMembrFunc,hr,__LINE__);
pInstrument.m_pPort = m_pPort; // Updates the Outputport reference
} else return hr;
return S_OK;
}
// Unload an instrument from the port
HRESULT COutputPort::UnLoadInstrument(CInstrument &pInstrument)
{
HRESULT hr = DM_FAILED;
TCHAR strMembrFunc[] = _T("COutputPort::UnLoadInstrument()");
if ((m_pPort) && (pInstrument.m_pDownLoadedInstrument))
{
if (FAILED(hr = m_pPort->UnloadInstrument(pInstrument.m_pDownLoadedInstrument)))
throw CDMusicException(strMembrFunc,hr,__LINE__);
SAFE_RELEASE(pInstrument.m_pDownLoadedInstrument);
} else return hr;
return S_OK;
}
// Sends an unstructured MIDI message
HRESULT COutputPort::SendMidiMsg(LPBYTE lpMsg,DWORD dwLength,DWORD dwChannelGroup)
{
HRESULT hr = DM_FAILED;
REFERENCE_TIME rt;
TCHAR strMembrFunc[] = _T("COutputPort::SendMidiMsg() long version");
if ((m_pPort) && (m_pBuffer) && (m_pClock))
{
if (FAILED(hr = m_pClock->GetTime(&rt)))
throw CDMusicException(strMembrFunc,hr,__LINE__); // Gets the exact time to play it
if (FAILED(hr = m_pBuffer->PackUnstructured(rt,dwChannelGroup,dwLength,lpMsg)))
throw CDMusicException(strMembrFunc,hr,__LINE__);
if (FAILED(hr = m_pPort->PlayBuffer(m_pBuffer)))
throw CDMusicException(strMembrFunc,hr,__LINE__); // Sends the data
if (FAILED(hr = m_pBuffer->Flush()))
throw CDMusicException(strMembrFunc,hr,__LINE__); // Discards all data in the buffer
} else throw CDMusicException(strMembrFunc,hr,__LINE__);
return S_OK;
}
// Function to send a MIDI normal message to the selected output port
HRESULT COutputPort::SendMidiMsg(DWORD dwMsg,DWORD dwChannelGroup)
{
HRESULT hr = DM_FAILED;
REFERENCE_TIME rt;
TCHAR strMembrFunc[] = _T("COutputPort::SendMidiMsg() short version");
if ((m_pPort) && (m_pBuffer) && (m_pClock))
{
if (FAILED(hr = m_pClock->GetTime(&rt)))
throw CDMusicException(strMembrFunc,hr,__LINE__); // Gets the exact time to play it
if (FAILED(hr = m_pBuffer->PackStructured(rt,dwChannelGroup,dwMsg)))
throw CDMusicException(strMembrFunc,hr,__LINE__);
if (FAILED(hr = m_pPort->PlayBuffer(m_pBuffer)))
throw CDMusicException(strMembrFunc,hr,__LINE__); // Sends the data
if (FAILED(hr = m_pBuffer->Flush()))
throw CDMusicException(strMembrFunc,hr,__LINE__); // Discards all data in the buffer
} else throw CDMusicException(strMembrFunc,hr,__LINE__);
return S_OK;
}
// Function to activate an effect in the port
HRESULT COutputPort::SetEffect(BOOL bActivate,BYTE Effect)
{
IKsControl *pControl;
KSPROPERTY ksp;
DWORD dwEffects = 0;
ULONG cb;
HRESULT hr = DM_FAILED;
TCHAR strMembrFunc[] = _T("COutputPort::SetEffect()");
// Get the IKsControl interface
if (m_pPort)
{
hr = m_pPort->QueryInterface(IID_IKsControl,(void**)&pControl);
if (SUCCEEDED(hr))
{
ZeroMemory(&ksp, sizeof(ksp));
if (!bActivate)
dwEffects = 0;
else
{
// Select an audio effect
switch(Effect)
{
case 0x1:
dwEffects = DMUS_EFFECT_REVERB;
break;
case 0x2:
dwEffects = DMUS_EFFECT_CHORUS;
break;
case 0x4:
dwEffects = DMUS_EFFECT_DELAY;
break;
case 0x3:
dwEffects = DMUS_EFFECT_CHORUS | DMUS_EFFECT_REVERB;
break;
case 0x5:
dwEffects = DMUS_EFFECT_REVERB | DMUS_EFFECT_DELAY;
break;
case 0x6:
dwEffects = DMUS_EFFECT_CHORUS | DMUS_EFFECT_DELAY;
break;
case 0x7:
dwEffects = DMUS_EFFECT_CHORUS | DMUS_EFFECT_REVERB | DMUS_EFFECT_DELAY;
break;
}
}
ksp.Set = GUID_DMUS_PROP_Effects;
ksp.Id = 0;
ksp.Flags = KSPROPERTY_TYPE_SET;
if (FAILED(hr = pControl->KsProperty(&ksp,sizeof(ksp),(LPVOID)&dwEffects,
sizeof(dwEffects),&cb))) throw CDMusicException(strMembrFunc,hr,__LINE__);
SAFE_RELEASE(pControl);
} else throw CDMusicException(strMembrFunc,hr,__LINE__);
} else throw CDMusicException(strMembrFunc,hr,__LINE__);
return S_OK;
}
// Code a MIDI message given the three bytes of a MIDI message
DWORD COutputPort::EncodeMidiMsg(BYTE Status,BYTE DataByte1,BYTE DataByte2)
{
DWORD dwMsg;
dwMsg = Status;
dwMsg |= DataByte1 << SHIFT_8;
dwMsg |= DataByte2 << SHIFT_16;
return dwMsg;
}
// Code a MIDI message given the Command and the Channel
DWORD COutputPort::EncodeMidiMsg(BYTE Command,BYTE Channel,BYTE DataByte1,BYTE DataByte2)
{
DWORD dwMsg;
dwMsg = Command | Channel;
dwMsg |= DataByte1 << SHIFT_8;
dwMsg |= DataByte2 << SHIFT_16;
return dwMsg;
}
// Class destructor
// Release all the interfaces
COutputPort::~COutputPort()
{
ReleasePort();
}
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