dolphin/Externals/MusicMod/Player/Src/GenPlugin.cpp

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////////////////////////////////////////////////////////////////////////////////
// Plainamp, Open source Winamp core
//
// Copyright <20> 2005 Sebastian Pipping <webmaster@hartwork.org>
//
// --> http://www.hartwork.org
//
// This source code is released under the GNU General Public License (GPL).
// See GPL.txt for details. Any non-GPL usage is strictly forbidden.
////////////////////////////////////////////////////////////////////////////////
#include "GenPlugin.h"
#include "Main.h"
#include "Unicode.h"
#include "Console.h"
#include <string.h>
vector <GenPlugin *> gen_plugins; // extern
////////////////////////////////////////////////////////////////////////////////
///
////////////////////////////////////////////////////////////////////////////////
GenPlugin::GenPlugin( TCHAR * szDllpath, bool bKeepLoaded ) : Plugin( szDllpath )
{
iHookerIndex = -1;
plugin = NULL;
if( !Load() )
{
return;
}
gen_plugins.push_back( this );
}
////////////////////////////////////////////////////////////////////////////////
///
////////////////////////////////////////////////////////////////////////////////
bool GenPlugin::Load()
{
if( IsLoaded() ) return true;
// (1) Load DLL
hDLL = LoadLibrary( GetFullpath() );
if( !hDLL ) return false;
// (2) Find export
WINAMP_GEN_GETTER winampGetGeneralPurposePlugin =
( WINAMP_GEN_GETTER )GetProcAddress( hDLL, "winampGetGeneralPurposePlugin" );
if( winampGetGeneralPurposePlugin == NULL )
{
FreeLibrary( hDLL );
hDLL = NULL;
return false;
}
// (3) Get module
plugin = winampGetGeneralPurposePlugin();
if( !plugin )
{
FreeLibrary( hDLL );
hDLL = NULL;
return false;
}
// (4) Process module
plugin->hDllInstance = hDLL;
plugin->hwndParent = WindowMain;
// Note: Some plugins (mainly old ones) set description in init.
// Therefore we init first and copy the name after.
// (5) Init
if( plugin->init )
{
const WNDPROC WndprocBefore = ( WNDPROC )GetWindowLong( WindowMain, GWL_WNDPROC );
plugin->init();
const WNDPROC WndprocAfter = ( WNDPROC )GetWindowLong( WindowMain, GWL_WNDPROC );
if( WndprocBefore != WndprocAfter )
{
WndprocBackup = WndprocBefore;
iHookerIndex = iWndprocHookCounter++;
}
}
if( !szName )
{
// Note: The prefix is not removed to hide their
// origin at Nullsoft! It just reads easier.
if( !strnicmp( plugin->description, "nullsoft ", 9 ) )
{
plugin->description += 9;
}
// Get rid of " (xxx.dll)" postfix
char * walk = plugin->description + strlen( plugin->description ) - 5;
while( true )
{
if( ( walk <= plugin->description ) || strnicmp( walk, ".dll)", 5 ) ) break;
while( ( walk > plugin->description ) && ( *walk != '(' ) ) walk--;
if( walk <= plugin->description ) break;
walk--;
if( ( walk <= plugin->description ) || ( *walk != ' ' ) ) break;
*walk = '\0';
}
iNameLen = ( int )strlen( plugin->description );
szName = new TCHAR[ iNameLen + 1 ];
ToTchar( szName, plugin->description, iNameLen );
szName[ iNameLen ] = TEXT( '\0' );
}
TCHAR szBuffer[ 5000 ];
_stprintf( szBuffer, TEXT( "Loading <%s>, %s" ), GetFilename(), szName );
Console::Append( szBuffer );
Console::Append( TEXT( " " ) );
// Note: Plugins that use a wndproc hook need
// to be unloaded in the inverse loading order.
// This is due to the nature of wndproc hooking.
if( iHookerIndex != -1 )
{
Console::Append( TEXT( "Wndproc hook added (by plugin)" ) );
}
return true;
}
////////////////////////////////////////////////////////////////////////////////
///
////////////////////////////////////////////////////////////////////////////////
bool GenPlugin::Unload()
{
if( !IsLoaded() ) return true;
TCHAR szBuffer[ 5000 ];
_stprintf( szBuffer, TEXT( "Unloading <%s>" ), GetFilename() );
Console::Append( szBuffer );
Console::Append( TEXT( " " ) );
printf( ">>>Unloading <%s>\n" , GetFilename() );
// Quit
if( plugin )
{
if( plugin->quit ) plugin->quit();
plugin = NULL;
}
// Remove wndproc hook
if( ( iHookerIndex != -1 ) && ( iHookerIndex == iWndprocHookCounter - 1 ) )
{
// If we don't restore it the plugins wndproc will
// still be called which is not there anymore -> crash
SetWindowLong( WindowMain, GWL_WNDPROC, ( LONG )WndprocBackup );
Console::Append( TEXT( "Wndproc hook removed (by host)" ) );
Console::Append( TEXT( " " ) );
iHookerIndex = -1;
iWndprocHookCounter--;
}
FreeLibrary( hDLL );
hDLL = NULL;
return true;
}
////////////////////////////////////////////////////////////////////////////////
///
////////////////////////////////////////////////////////////////////////////////
bool GenPlugin::Config()
{
if( !IsLoaded() ) return false;
if( !plugin ) return false;
if( !plugin->config ) return false;
plugin->config();
return true;
}