/*
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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) 2002-2004 by Carlos Jim�nez de Parga
All rights reserved.
For any suggestion or failure report, please contact me by:
e-mail: cjimenez@isometrica.net
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: 2.3b
Module : CMidiPort.cpp
Purpose: Code implementation for the CMidiPort port class
Created: CJP / 02-08-2002
History: CJP / 20-02-2004
Date format: Day-month-year
Update: 20/09/2002
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: 25/03/2003
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
Update: 03/10/2003
17. Redesigned class interfaces
18. Safer input port termination thread
19. New CMasterClock class
20. DLS files can be loaded from resources
21. DLS instruments note range support
22. New CSampleInstrument class added to the library
23. Direct download of samples to wave-table memory
24. .WAV file sample format supported
25. New methods added to the output port class
26. Fixed small bugs
Update: 20/02/2004
27. Added new DirectMusic classes for Audio handling
28. Improved CMidiPort class with internal buffer run-time resizing
29. 3D audio positioning
*/
#include "CMidiPart.h"
using namespace directmidi;
CMidiPort::CMidiPort(DWORD dwType)
{
m_pPort = NULL;
m_pBuffer = NULL;
m_pControl= NULL;
m_pMusic8 = NULL;
m_dwPortType = dwType;
}
CMidiPort::~CMidiPort()
{
SAFE_RELEASE(m_pPort);
SAFE_RELEASE(m_pBuffer);
SAFE_RELEASE(m_pControl);
}
// Initialize object
HRESULT CMidiPort::Initialize(CDirectMusic &DMusic)
{
HRESULT hr = DM_FAILED;
TCHAR strMembrFunc[] = _T("CMidiPort::Initialize()");
if (DMusic.m_pMusic8 == NULL) throw CDMusicException(strMembrFunc,hr,__LINE__);
m_pMusic8 = DMusic.m_pMusic8;
// Sets to 0 the port capabilities structure
ZeroMemory(&m_PortParams,sizeof(DMUS_PORTPARAMS8));
m_PortParams.dwSize = sizeof(DMUS_PORTPARAMS8);
return S_OK;
}
// Returns the number of MIDI ports
DWORD CMidiPort::GetNumPorts()
{
DMUS_PORTCAPS portinf;
DWORD dwIndex = 0, dwNum = 0;
HRESULT hr = DM_FAILED;
TCHAR strMembrFunc[] = _T("CMidiPort::GetNumPorts()");
// Checks member variables initialization
if (!m_pMusic8) throw CDMusicException(strMembrFunc,hr,__LINE__);
// Set to 0 the DMUS_PORTCAPS structure
ZeroMemory(&portinf,sizeof(portinf));
portinf.dwSize = sizeof(DMUS_PORTCAPS);
// Call the DirectMusic8 member function to enumerate systems ports
while ((hr = m_pMusic8->EnumPort(dwIndex++,&portinf))==S_OK)
if (portinf.dwClass == m_dwPortType) dwNum++;
if ((hr != S_FALSE) && (hr != S_OK)) throw CDMusicException(strMembrFunc,hr,__LINE__);
return dwNum;
}
// Gets the INFOPORT information of an activated port
HRESULT CMidiPort::GetActivatedPortInfo(LPINFOPORT lpInfoPort)
{
DMUS_PORTCAPS portinf;
HRESULT hr = DM_FAILED;
TCHAR strMembrFunc[] = _T("CMidiPort::GetActivatedPortInfo()");
// Checks member variables initialization
if (!m_pPort || !m_pMusic8 || !lpInfoPort) throw CDMusicException(strMembrFunc,hr,__LINE__);
// Sets to 0 the DMUS_PORTCAPS structure
ZeroMemory(&portinf,sizeof(portinf));
portinf.dwSize = sizeof(DMUS_PORTCAPS);
if (FAILED(hr = m_pPort->GetCaps(&portinf))) throw CDMusicException(strMembrFunc,hr,__LINE__);
// Initializes INFOPORT structure
ZeroMemory(lpInfoPort,sizeof(INFOPORT));
CopyMemory(&(lpInfoPort->guidSynthGUID),&portinf.guidPort,sizeof(GUID));
#ifdef _UNICODE
_tcscpy(lpInfoPort->szPortDescription,portinf.wszDescription);
#else
wcstombs(lpInfoPort->szPortDescription,portinf.wszDescription,DMUS_MAX_DESCRIPTION);
#endif
lpInfoPort->dwClass = portinf.dwClass;
lpInfoPort->dwEffectFlags = portinf.dwEffectFlags;
lpInfoPort->dwFlags = portinf.dwFlags;
lpInfoPort->dwMemorySize = portinf.dwMemorySize;
lpInfoPort->dwMaxAudioChannels = portinf.dwMaxAudioChannels;
lpInfoPort->dwMaxChannelGroups = portinf.dwMaxChannelGroups;
lpInfoPort->dwMaxVoices = portinf.dwMaxVoices;
lpInfoPort->dwType = portinf.dwType;
return hr;
}
// Gets the port info given the number of the port, returns a pointer to an INFOPORT structure
HRESULT CMidiPort::GetPortInfo(DWORD dwNumPort,LPINFOPORT lpInfoPort)
{
HRESULT hr = DM_FAILED;
DMUS_PORTCAPS portinf;
DWORD dwIndex = 0, dwNum = 0;
TCHAR strMembrFunc[] = _T("CMidiPort::GetPortInfo()");
// Checks member variables initialization
if (!m_pMusic8 || !lpInfoPort) throw CDMusicException(strMembrFunc,hr,__LINE__);
// Set to 0 the DMUS_PORTCAPS structure
ZeroMemory(&portinf,sizeof(portinf));
portinf.dwSize = sizeof(DMUS_PORTCAPS);
while ((hr = m_pMusic8->EnumPort(dwIndex++,&portinf))==S_OK)
{
if (portinf.dwClass == m_dwPortType) dwNum++;
if (dwNum == dwNumPort) break;
}
if ((hr != S_FALSE) && (hr != S_OK)) throw CDMusicException(strMembrFunc,hr,__LINE__);
if (SUCCEEDED(hr))
{
// Copy the GUID of DMUS_PORTCAP structure to an INFOPORT structure
ZeroMemory(lpInfoPort,sizeof(INFOPORT));
CopyMemory(&(lpInfoPort->guidSynthGUID),&portinf.guidPort,sizeof(GUID));
#ifdef _UNICODE
_tcscpy(lpInfoPort->szPortDescription,portinf.wszDescription);
#else
wcstombs(lpInfoPort->szPortDescription,portinf.wszDescription,DMUS_MAX_DESCRIPTION);
#endif
lpInfoPort->dwClass = portinf.dwClass;
lpInfoPort->dwEffectFlags = portinf.dwEffectFlags;
lpInfoPort->dwFlags = portinf.dwFlags;
lpInfoPort->dwMemorySize = portinf.dwMemorySize;
lpInfoPort->dwMaxAudioChannels = portinf.dwMaxAudioChannels;
lpInfoPort->dwMaxChannelGroups = portinf.dwMaxChannelGroups;
lpInfoPort->dwMaxVoices = portinf.dwMaxVoices;
lpInfoPort->dwType = portinf.dwType;
}
return hr;
}
// Function to select and activate an Input MIDI port given an INFOPORT structure
HRESULT CMidiPort::ActivatePort(LPINFOPORT InfoPort,DWORD dwSysExSize,BOOL bFromInterface)
{
HRESULT hr = DM_FAILED;
TCHAR strMembrFunc[] = _T("CMidiPort::ActivatePort()");
// Checks member variables initialization
if (!m_pMusic8 || ((m_pPort || !InfoPort) && !bFromInterface) || m_pBuffer ) throw CDMusicException(strMembrFunc,hr,__LINE__);
// The midi port is created here
if (!bFromInterface)
{
if (FAILED(hr = m_pMusic8->CreatePort(InfoPort->guidSynthGUID ,&m_PortParams,&m_pPort,NULL)))
throw CDMusicException(strMembrFunc,hr,__LINE__);
}
// We have to activate it
if (FAILED(hr = m_pPort->Activate(TRUE))) throw CDMusicException(strMembrFunc,hr,__LINE__);
DMUS_BUFFERDESC BufferDesc; // Create the DirectMusic buffer to store MIDI messages
ZeroMemory(&BufferDesc,sizeof(DMUS_BUFFERDESC));
BufferDesc.dwSize = sizeof(DMUS_BUFFERDESC);
BufferDesc.guidBufferFormat = GUID_NULL;
BufferDesc.cbBuffer = DMUS_EVENT_SIZE(dwSysExSize); // at least 32 bytes to store messages
if (FAILED(hr = m_pMusic8->CreateMusicBuffer(&BufferDesc,&m_pBuffer,NULL)))
throw CDMusicException(strMembrFunc,hr,__LINE__);
return S_OK;
}
// Establishes a new buffer for the port
HRESULT CMidiPort::SetBuffer(DWORD dwBufferSize)
{
HRESULT hr = DM_FAILED;
TCHAR strMembrFunc[] = _T("CMidiPort::SetBuffer()");
// Checks member variables initialization
if (m_pBuffer)
RemoveBuffer();
if (!m_pMusic8)
throw CDMusicException(strMembrFunc,hr,__LINE__);
DMUS_BUFFERDESC BufferDesc; // Create the DirectMusic buffer to store MIDI messages
ZeroMemory(&BufferDesc,sizeof(DMUS_BUFFERDESC));
BufferDesc.dwSize = sizeof(DMUS_BUFFERDESC);
BufferDesc.guidBufferFormat = GUID_NULL;
BufferDesc.cbBuffer = DMUS_EVENT_SIZE(dwBufferSize);
if (FAILED(hr = m_pMusic8->CreateMusicBuffer(&BufferDesc,&m_pBuffer,NULL)))
throw CDMusicException(strMembrFunc,hr,__LINE__);
return S_OK;
}
// Removes the internal buffer
HRESULT CMidiPort::RemoveBuffer()
{
HRESULT hr = DM_FAILED;
TCHAR strMembrFunc[] = _T("CMidiPort::RemoveBuffer()");
if (m_pBuffer)
{
SAFE_RELEASE(m_pBuffer);
return S_OK;
} else return S_FALSE;
}
// Sets properties for a given port
HRESULT CMidiPort::KsProperty(GUID Set,ULONG Id,ULONG Flags,LPVOID pvPropertyData,ULONG ulDataLength,PULONG pulBytesReturned)
{
HRESULT hr = DM_FAILED;
TCHAR strMembrFunc[] = _T("CMidiPort::KsProperty()");
KSPROPERTY ksp;
// Get the IKsControl interface
if (m_pPort)
{
SAFE_RELEASE(m_pControl);
hr = m_pPort->QueryInterface(IID_IKsControl,(void**)&m_pControl);
if (SUCCEEDED(hr))
{
ZeroMemory(&ksp,sizeof(ksp));
ksp.Set = Set;
ksp.Id = Id;
ksp.Flags = Flags;
hr = m_pControl->KsProperty(&ksp,sizeof(ksp),pvPropertyData,ulDataLength,pulBytesReturned);
if (FAILED(hr) && (hr != DMUS_E_UNKNOWN_PROPERTY)) throw CDMusicException(strMembrFunc,hr,__LINE__);
SAFE_RELEASE(m_pControl);
} else throw CDMusicException(strMembrFunc,hr,__LINE__);
} else throw CDMusicException(strMembrFunc,hr,__LINE__);
return hr;
}
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