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MusicMod: Preparation for adding music modification
git-svn-id: https://dolphin-emu.googlecode.com/svn/trunk@1735 8ced0084-cf51-0410-be5f-012b33b47a6e
This commit is contained in:
John Peterson
296
Branches/MusicMod/Player/Src/OutputPlugin.cpp
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296
Branches/MusicMod/Player/Src/OutputPlugin.cpp
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////////////////////////////////////////////////////////////////////////////////
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// Plainamp, Open source Winamp core
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//
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// Copyright <20> 2005 Sebastian Pipping <webmaster@hartwork.org>
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//
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// --> http://www.hartwork.org
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//
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// This source code is released under the GNU General Public License (GPL).
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// See GPL.txt for details. Any non-GPL usage is strictly forbidden.
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////////////////////////////////////////////////////////////////////////////////
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#include "OutputPlugin.h"
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#include "Main.h"
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#include "Unicode.h"
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#include "Console.h"
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#include "Config.h"
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#include "Playback.h"
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vector <OutputPlugin *> output_plugins; // extern
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OutputPlugin ** active_output_plugins = NULL; // extern
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int active_output_count = 0; // extern
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////////////////////////////////////////////////////////////////////////////////
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///
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////////////////////////////////////////////////////////////////////////////////
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OutputPlugin::OutputPlugin( TCHAR * szDllpath, bool bKeepLoaded ) : Plugin( szDllpath )
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{
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iHookerIndex = -1;
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bActive = false;
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iArrayIndex = -1;
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plugin = NULL;
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if( !Load() )
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{
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return;
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}
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////////////////////////////////////////////////////////////////////////////////
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// Quick hack!!!
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TCHAR * szBuffer = new TCHAR[ 500 ]; // NOT LOCAL!!!
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_stprintf( szBuffer, TEXT( "OutputPluginActive___%s" ), GetFilename() );
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ConfBool * cbActive = new ConfBool( &bActive, szBuffer, CONF_MODE_INTERNAL, false );
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cbActive->Read();
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if( bActive )
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{
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bActive = false;
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Start();
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}
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else
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{
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if( !bKeepLoaded )
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{
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// Note: out_ds seems to do weird things
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// when unloaded here!?
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// So out_ds keeps loaded for now.
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if( _tcscmp( GetFilename(), TEXT( "out_ds.dll" ) ) )
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{
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Unload();
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}
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}
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}
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// Quick hack!!!
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////////////////////////////////////////////////////////////////////////////////
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output_plugins.push_back( this );
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}
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////////////////////////////////////////////////////////////////////////////////
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///
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////////////////////////////////////////////////////////////////////////////////
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bool OutputPlugin::Load()
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{
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if( IsLoaded() ) return true;
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// (1) Load DLL
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hDLL = LoadLibrary( GetFullpath() );
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if( !hDLL ) return false;
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// (2) Find export
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WINAMP_OUTPUT_GETTER winampGetOutModule =
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( WINAMP_OUTPUT_GETTER )GetProcAddress( hDLL, "winampGetOutModule" );
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if( winampGetOutModule == NULL )
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{
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FreeLibrary( hDLL );
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hDLL = NULL;
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return false;
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}
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// (3) Get module
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plugin = winampGetOutModule();
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if( !plugin )
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{
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FreeLibrary( hDLL );
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hDLL = NULL;
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return false;
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}
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// (4) Process module
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plugin->hDllInstance = hDLL;
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plugin->hMainWindow = WindowMain;
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if( !szName )
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{
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// Note: The prefix is not removed to hide their
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// origin at Nullsoft! It just reads easier.
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if( !strnicmp( plugin->description, "nullsoft ", 9 ) )
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{
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plugin->description += 9;
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}
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iNameLen = ( int )strlen( plugin->description );
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szName = new TCHAR[ iNameLen + 1 ];
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ToTchar( szName, plugin->description, iNameLen );
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szName[ iNameLen ] = TEXT( '\0' );
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}
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TCHAR szBuffer[ 5000 ];
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_stprintf( szBuffer, TEXT( "Loading <%s>, %s" ), GetFilename(), szName );
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Console::Append( szBuffer );
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Console::Append( TEXT( " " ) );
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if( plugin->Init )
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{
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// Init
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const WNDPROC WndprocBefore = ( WNDPROC )GetWindowLong( WindowMain, GWL_WNDPROC );
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plugin->Init();
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const WNDPROC WndprocAfter = ( WNDPROC )GetWindowLong( WindowMain, GWL_WNDPROC );
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if( WndprocBefore != WndprocAfter )
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{
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WndprocBackup = WndprocBefore;
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iHookerIndex = iWndprocHookCounter++;
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}
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// Note: Plugins that use a wndproc hook need
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// to be unloaded in the inverse loading order.
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// This is due to the nature of wndproc hooking.
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if( iHookerIndex != -1 )
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{
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Console::Append( TEXT( "Wndproc hook added (by plugin)" ) );
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}
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}
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return true;
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}
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////////////////////////////////////////////////////////////////////////////////
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///
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////////////////////////////////////////////////////////////////////////////////
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bool OutputPlugin::Unload()
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{
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if( !IsLoaded() ) return true;
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if( bActive && Playback::IsPlaying() ) return false;
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TCHAR szBuffer[ 5000 ];
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_stprintf( szBuffer, TEXT( "Unloading <%s>" ), GetFilename() );
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Console::Append( szBuffer );
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Console::Append( TEXT( " " ) );
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// Quit
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if( plugin )
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{
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if( plugin->Quit ) plugin->Quit();
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plugin = NULL;
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}
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// Remove wndproc hook
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if( ( iHookerIndex != -1 ) && ( iHookerIndex == iWndprocHookCounter - 1 ) )
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{
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// If we don't restore it the plugins wndproc will
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// still be called which is not there anymore -> crash
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SetWindowLong( WindowMain, GWL_WNDPROC, ( LONG )WndprocBackup );
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Console::Append( TEXT( "Wndproc hook removed (by host)" ) );
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Console::Append( TEXT( " " ) );
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iHookerIndex = -1;
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iWndprocHookCounter--;
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}
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FreeLibrary( hDLL );
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hDLL = NULL;
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return true;
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}
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////////////////////////////////////////////////////////////////////////////////
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///
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////////////////////////////////////////////////////////////////////////////////
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bool OutputPlugin::About( HWND hParent )
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{
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if( !IsLoaded() ) return false;
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if( !plugin ) return false;
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if( !plugin->About ) return false;
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plugin->About( hParent );
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return true;
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}
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////////////////////////////////////////////////////////////////////////////////
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///
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////////////////////////////////////////////////////////////////////////////////
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bool OutputPlugin::Config( HWND hParent )
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{
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if( !IsLoaded() ) return false;
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if( !plugin ) return false;
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if( !plugin->Config ) return false;
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plugin->Config( hParent );
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return true;
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}
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////////////////////////////////////////////////////////////////////////////////
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///
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////////////////////////////////////////////////////////////////////////////////
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bool OutputPlugin::Start()
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{
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if( !IsLoaded() ) return false;
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if( bActive ) return true;
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if( active_output_count )
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{
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active_output_plugins = ( OutputPlugin ** )realloc( active_output_plugins, ( active_output_count + 1 ) * sizeof( OutputPlugin * ) );
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active_output_plugins[ active_output_count ] = this;
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iArrayIndex = active_output_count;
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active_output_count++;
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}
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else
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{
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active_output_plugins = ( OutputPlugin ** )malloc( sizeof( OutputPlugin * ) );
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active_output_plugins[ 0 ] = this;
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iArrayIndex = 0;
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active_output_count = 1;
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}
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TCHAR szBuffer[ 5000 ];
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_stprintf( szBuffer, TEXT( "Output plugin <%s> activated" ), GetFilename() );
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Console::Append( szBuffer );
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Console::Append( TEXT( " " ) );
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bActive = true;
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return true;
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}
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////////////////////////////////////////////////////////////////////////////////
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///
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////////////////////////////////////////////////////////////////////////////////
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bool OutputPlugin::Stop()
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{
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if( !IsLoaded() ) return true;
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if( !bActive ) return true;
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const int iMaxIndex = active_output_count - 1;
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if( iArrayIndex < iMaxIndex )
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{
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active_output_plugins[ iArrayIndex ] = active_output_plugins[ iMaxIndex ];
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active_output_plugins[ iArrayIndex ]->iArrayIndex = iArrayIndex;
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}
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iArrayIndex = -1;
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active_output_count--;
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// TODO Flush?
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// TODO Close?
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TCHAR szBuffer[ 5000 ];
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_stprintf( szBuffer, TEXT( "Output plugin <%s> deactivated" ), GetFilename() );
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Console::Append( szBuffer );
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Console::Append( TEXT( " " ) );
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bActive = false;
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return true;
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}
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