/*
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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 : CDLSLoader.cpp
Purpose: Code implementation for CDLSLoader 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;
// The constructor of the class
CDLSLoader::CDLSLoader()
{
m_pLoader = NULL;
}
// Initialize the object, create the instance of DirectMusicLoader object
HRESULT CDLSLoader::Initialize()
{
HRESULT hr;
TCHAR strMembrFunc[] = _T("CDLSLoader::Initialize");
if (FAILED(hr = CoCreateInstance(CLSID_DirectMusicLoader,NULL,
CLSCTX_INPROC_SERVER,IID_IDirectMusicLoader8,(LPVOID*)&m_pLoader)))
throw CDMusicException(strMembrFunc,hr,__LINE__);
return S_OK;
}
// Loads a DLS file and initializes a Collection object
HRESULT CDLSLoader::LoadDLS(LPCTSTR lpFileName,CCollection &pCollection)
{
HRESULT hr = DM_FAILED;
DMUS_OBJECTDESC dmusdesc;
TCHAR strMembrFunc[] = _T("CDLSLoader::LoadDLS");
// Sets to 0 the DMUS structure
ZeroMemory(&dmusdesc,sizeof(DMUS_OBJECTDESC));
dmusdesc.dwSize = sizeof(DMUS_OBJECTDESC);
dmusdesc.guidClass = CLSID_DirectMusicCollection;
if (lpFileName == NULL) // Load the synthesizer default GM set
{
dmusdesc.guidObject = GUID_DefaultGMCollection;
dmusdesc.dwValidData = DMUS_OBJ_CLASS | DMUS_OBJ_OBJECT;
}
else
{
#ifdef _UNICODE
_tcscpy(dmusdesc.wszFileName,lpFileName);
#else
mbstowcs(dmusdesc.wszFileName,lpFileName,_MAX_PATH); // Convert to wide-char
#endif
dmusdesc.dwValidData = DMUS_OBJ_CLASS | DMUS_OBJ_FILENAME | DMUS_OBJ_FULLPATH;
}
UnLoadCollection(pCollection); // In case the object is already with data
if (m_pLoader) // Load the DLS file
{
if (FAILED(hr = m_pLoader->GetObject(&dmusdesc,IID_IDirectMusicCollection,(void**)&pCollection.m_pCollection)))
throw CDMusicException(strMembrFunc,hr,__LINE__);
} else throw CDMusicException(strMembrFunc,hr,__LINE__);
return S_OK;
}
// Unload a collection from the loader
HRESULT CDLSLoader::UnLoadCollection(CCollection &pCollection)
{
HRESULT hr = DM_FAILED;
TCHAR strMembrFunc[] = _T("CDLSLoader::UnLoadCollection");
if ((m_pLoader) && (pCollection.m_pCollection))
{
if (FAILED(hr = m_pLoader->ReleaseObjectByUnknown(pCollection.m_pCollection)))
throw CDMusicException(strMembrFunc,hr,__LINE__);
SAFE_RELEASE(pCollection.m_pCollection);
} else return hr;
return S_OK;
}
// Class destructor
// Clear the references to a collection in the loader
CDLSLoader::~CDLSLoader()
{
if (m_pLoader)
{
m_pLoader->ClearCache(CLSID_DirectMusicCollection);
// Remove from the cache objects that are no longer in use
m_pLoader->CollectGarbage();
}
SAFE_RELEASE(m_pLoader);
}