source-engine/utils/smp/CWMPEventDispatch.cpp

//========= Copyright Valve Corporation, All rights reserved. ============//
// CWMPEventDispatch.cpp : Implementation of the event dispatcher
//

#include "CWMPEventDispatch.h"
#include "CWMPHost.h"

extern HWND		g_hBlackFadingWindow;
extern CComPtr<IWMPPlayer>	g_spWMPPlayer;
extern CWMPHost*			g_pFrame;
extern double				g_timeAtFadeStart;
extern bool					g_bFadeIn;

bool g_bFadeWindowTriggered = false;


bool IsFullScreen();
bool SetFullScreen( bool bWantToBeFullscreen );
bool IsVideoPlaying();
void PlayVideo( bool bPlay );
bool ShowFadeWindow( bool bShow );
void LogPlayerEvent( EventType_t e, float pos );
void LogPlayerEvent( EventType_t e );


HRESULT CWMPEventDispatch::Invoke(
                            DISPID  dispIdMember,      
                            REFIID  riid,              
                            LCID  lcid,                
                            WORD  wFlags,              
                            DISPPARAMS FAR*  pDispParams,  
                            VARIANT FAR*  pVarResult,  
                            EXCEPINFO FAR*  pExcepInfo,  
                            unsigned int FAR*  puArgErr )
{
    if (!pDispParams)
        return E_POINTER;

    if (pDispParams->cNamedArgs != 0)
        return DISP_E_NONAMEDARGS;

    HRESULT hr = DISP_E_MEMBERNOTFOUND;

    switch (dispIdMember)
    {
        case DISPID_WMPCOREEVENT_OPENSTATECHANGE:
            OpenStateChange(pDispParams->rgvarg[0].lVal /* NewState */ );
            break;

        case DISPID_WMPCOREEVENT_PLAYSTATECHANGE:
            PlayStateChange(pDispParams->rgvarg[0].lVal /* NewState */);
            break;

        case DISPID_WMPCOREEVENT_AUDIOLANGUAGECHANGE:
            AudioLanguageChange(pDispParams->rgvarg[0].lVal /* LangID */);
            break;

        case DISPID_WMPCOREEVENT_STATUSCHANGE:
            StatusChange();
            break;

        case DISPID_WMPCOREEVENT_SCRIPTCOMMAND:
            ScriptCommand(pDispParams->rgvarg[1].bstrVal /* scType */, pDispParams->rgvarg[0].bstrVal /* Param */ );
            break;

        case DISPID_WMPCOREEVENT_NEWSTREAM:
            NewStream();
            break;

        case DISPID_WMPCOREEVENT_DISCONNECT:
            Disconnect(pDispParams->rgvarg[0].lVal /* Result */ );
            break;

        case DISPID_WMPCOREEVENT_BUFFERING:
            Buffering(pDispParams->rgvarg[0].boolVal /* Start */);
            break;

        case DISPID_WMPCOREEVENT_ERROR:
            Error();
            break;

        case DISPID_WMPCOREEVENT_WARNING:
            Warning(pDispParams->rgvarg[1].lVal /* WarningType */, pDispParams->rgvarg[0].lVal /* Param */, pDispParams->rgvarg[2].bstrVal /* Description */);
            break;

        case DISPID_WMPCOREEVENT_ENDOFSTREAM:
            EndOfStream(pDispParams->rgvarg[0].lVal /* Result */ );
            break;

        case DISPID_WMPCOREEVENT_POSITIONCHANGE:
            PositionChange(pDispParams->rgvarg[1].dblVal /* oldPosition */, pDispParams->rgvarg[0].dblVal /* newPosition */);
            break;

        case DISPID_WMPCOREEVENT_MARKERHIT:
            MarkerHit(pDispParams->rgvarg[0].lVal /* MarkerNum */);
            break;

        case DISPID_WMPCOREEVENT_DURATIONUNITCHANGE:
            DurationUnitChange(pDispParams->rgvarg[0].lVal /* NewDurationUnit */);
            break;

        case DISPID_WMPCOREEVENT_CDROMMEDIACHANGE:
            CdromMediaChange(pDispParams->rgvarg[0].lVal /* CdromNum */);
            break;

        case DISPID_WMPCOREEVENT_PLAYLISTCHANGE:
            PlaylistChange(pDispParams->rgvarg[1].pdispVal /* Playlist */, (WMPPlaylistChangeEventType) pDispParams->rgvarg[0].lVal /* change */);
            break;
            
        case DISPID_WMPCOREEVENT_CURRENTPLAYLISTCHANGE:
            CurrentPlaylistChange((WMPPlaylistChangeEventType) pDispParams->rgvarg[0].lVal /* change */);
            break;

        case DISPID_WMPCOREEVENT_CURRENTPLAYLISTITEMAVAILABLE:
            CurrentPlaylistItemAvailable(pDispParams->rgvarg[0].bstrVal /*  bstrItemName */);
            break;

        case DISPID_WMPCOREEVENT_MEDIACHANGE:
            MediaChange(pDispParams->rgvarg[0].pdispVal /* Item */);
            break;

        case DISPID_WMPCOREEVENT_CURRENTMEDIAITEMAVAILABLE:
            CurrentMediaItemAvailable(pDispParams->rgvarg[0].bstrVal /* bstrItemName */);
            break;

        case DISPID_WMPCOREEVENT_CURRENTITEMCHANGE:
            CurrentItemChange(pDispParams->rgvarg[0].pdispVal /* pdispMedia */);
            break;

        case DISPID_WMPCOREEVENT_MEDIACOLLECTIONCHANGE:
            MediaCollectionChange();
            break;
            
        case DISPID_WMPCOREEVENT_MEDIACOLLECTIONATTRIBUTESTRINGADDED:
            MediaCollectionAttributeStringAdded(pDispParams->rgvarg[1].bstrVal /* bstrAttribName */, pDispParams->rgvarg[0].bstrVal /* bstrAttribVal */ );
            break;

        case DISPID_WMPCOREEVENT_MEDIACOLLECTIONATTRIBUTESTRINGREMOVED:
            MediaCollectionAttributeStringRemoved(pDispParams->rgvarg[1].bstrVal /* bstrAttribName */, pDispParams->rgvarg[0].bstrVal /* bstrAttribVal */ );
            break;

        case DISPID_WMPCOREEVENT_MEDIACOLLECTIONATTRIBUTESTRINGCHANGED:
            MediaCollectionAttributeStringChanged(pDispParams->rgvarg[2].bstrVal /* bstrAttribName */, pDispParams->rgvarg[1].bstrVal /* bstrOldAttribVal */, pDispParams->rgvarg[0].bstrVal /* bstrNewAttribVal */);
            break;

        case DISPID_WMPCOREEVENT_PLAYLISTCOLLECTIONCHANGE:
            PlaylistCollectionChange();
            break;

        case DISPID_WMPCOREEVENT_PLAYLISTCOLLECTIONPLAYLISTADDED:
            PlaylistCollectionPlaylistAdded(pDispParams->rgvarg[0].bstrVal /* bstrPlaylistName */ );
            break;

        case DISPID_WMPCOREEVENT_PLAYLISTCOLLECTIONPLAYLISTREMOVED:
            PlaylistCollectionPlaylistRemoved(pDispParams->rgvarg[0].bstrVal /* bstrPlaylistName */ );
            break;

        case DISPID_WMPCOREEVENT_PLAYLISTCOLLECTIONPLAYLISTSETASDELETED:
            PlaylistCollectionPlaylistSetAsDeleted(pDispParams->rgvarg[1].bstrVal /* bstrPlaylistName */, pDispParams->rgvarg[0].boolVal /* varfIsDeleted */);
            break;

        case DISPID_WMPCOREEVENT_MODECHANGE:
            ModeChange(pDispParams->rgvarg[1].bstrVal /* ModeName */, pDispParams->rgvarg[0].boolVal /* NewValue */);
            break;

        case DISPID_WMPCOREEVENT_MEDIAERROR:
            MediaError(pDispParams->rgvarg[0].pdispVal /* pMediaObject */);
            break;

        case DISPID_WMPCOREEVENT_OPENPLAYLISTSWITCH:
            OpenPlaylistSwitch(pDispParams->rgvarg[0].pdispVal /* pItem */);
            break;

        case DISPID_WMPCOREEVENT_DOMAINCHANGE:
            DomainChange(pDispParams->rgvarg[0].bstrVal /* strDomain */);
            break;

        case DISPID_WMPOCXEVENT_SWITCHEDTOPLAYERAPPLICATION:
            SwitchedToPlayerApplication();
            break;

        case DISPID_WMPOCXEVENT_SWITCHEDTOCONTROL:
            SwitchedToControl();
            break;

        case DISPID_WMPOCXEVENT_PLAYERDOCKEDSTATECHANGE:
            PlayerDockedStateChange();
            break;

        case DISPID_WMPOCXEVENT_PLAYERRECONNECT:
            PlayerReconnect();
            break;

        case DISPID_WMPOCXEVENT_CLICK:
            Click(pDispParams->rgvarg[3].iVal /* nButton */, pDispParams->rgvarg[2].iVal /* nShiftState */,  pDispParams->rgvarg[1].lVal /* fX */,  pDispParams->rgvarg[0].lVal /* fY */);
            break;

        case DISPID_WMPOCXEVENT_DOUBLECLICK:
            DoubleClick(pDispParams->rgvarg[3].iVal /* nButton */, pDispParams->rgvarg[2].iVal /* nShiftState */,  pDispParams->rgvarg[1].lVal /* fX */,  pDispParams->rgvarg[0].lVal /* fY */);
            break;

        case DISPID_WMPOCXEVENT_KEYDOWN:
            KeyDown(pDispParams->rgvarg[1].iVal /* nKeyCode */, pDispParams->rgvarg[0].iVal /* nShiftState */);
            break;

        case DISPID_WMPOCXEVENT_KEYPRESS:
            KeyPress(pDispParams->rgvarg[0].iVal /* nKeyAscii */);
            break;

        case DISPID_WMPOCXEVENT_KEYUP:
            KeyUp(pDispParams->rgvarg[1].iVal /* nKeyCode */, pDispParams->rgvarg[0].iVal /* nShiftState */);
            break;

        case DISPID_WMPOCXEVENT_MOUSEDOWN:
            MouseDown(pDispParams->rgvarg[3].iVal /* nButton */, pDispParams->rgvarg[2].iVal /* nShiftState */,  pDispParams->rgvarg[1].lVal /* fX */,  pDispParams->rgvarg[0].lVal /* fY */);
            break;

        case DISPID_WMPOCXEVENT_MOUSEMOVE:
            MouseMove(pDispParams->rgvarg[3].iVal /* nButton */, pDispParams->rgvarg[2].iVal /* nShiftState */,  pDispParams->rgvarg[1].lVal /* fX */,  pDispParams->rgvarg[0].lVal /* fY */);
            break;

        case DISPID_WMPOCXEVENT_MOUSEUP:
            MouseUp(pDispParams->rgvarg[3].iVal /* nButton */, pDispParams->rgvarg[2].iVal /* nShiftState */,  pDispParams->rgvarg[1].lVal /* fX */,  pDispParams->rgvarg[0].lVal /* fY */);
            break;
    }

    return( hr );
}

// Sent when the control changes OpenState
void CWMPEventDispatch::OpenStateChange(long NewState)
{
    return;
}

// Sent when the control changes PlayState
void CWMPEventDispatch::PlayStateChange(long NewState)
{
	WMPPlayState playstate;
	if ( g_spWMPPlayer->get_playState( &playstate ) == S_OK )
	{
		switch ( playstate )
		{
		case wmppsPlaying:
			{
				static bool s_first = true;
				if ( s_first )
				{
					s_first = false;

					LogPlayerEvent( ET_MEDIABEGIN );

					SetFullScreen( true );
					ShowFadeWindow( false );
				}
				else
				{
					LogPlayerEvent( ET_PLAY );
				}
				break;
			}

		case wmppsPaused:
			LogPlayerEvent( ET_PAUSE );
			break;

		case wmppsStopped:
			LogPlayerEvent( ET_STOP );
			break;

		case wmppsMediaEnded:
			LogPlayerEvent( ET_MEDIAEND );

			if ( IsFullScreen() && !g_bFadeWindowTriggered )
			{
				g_bFadeWindowTriggered = true;
				ShowFadeWindow( true );
			}
			break;
		}
	}
}

// Sent when the audio language changes
void CWMPEventDispatch::AudioLanguageChange(long LangID)
{
    return;
}

// Sent when the status string changes
void CWMPEventDispatch::StatusChange()
{
}

// Sent when a synchronized command or URL is received
void CWMPEventDispatch::ScriptCommand(BSTR scType,BSTR Param)
{
    return;
}

// Sent when a new stream is encountered (obsolete)
void CWMPEventDispatch::NewStream()
{
    return;
}

// Sent when the control is disconnected from the server (obsolete)
void CWMPEventDispatch:: Disconnect(long Result )
{
    return;
}

// Sent when the control begins or ends buffering
void CWMPEventDispatch:: Buffering(VARIANT_BOOL Start)
{
    return;
}

// Sent when the control has an error condition
void CWMPEventDispatch::Error()
{
    return;
}

// Sent when the control has an warning condition (obsolete)
void CWMPEventDispatch::Warning(long WarningType, long Param, BSTR Description)
{
    return;
}

// Sent when the media has reached end of stream
void CWMPEventDispatch::EndOfStream(long Result)
{
    return;
}

// Indicates that the current position of the movie has changed
void CWMPEventDispatch::PositionChange(double oldPosition,double newPosition)
{
	LogPlayerEvent( ET_SCRUBFROM, ( float )oldPosition );
	LogPlayerEvent( ET_SCRUBTO, ( float )newPosition );
}

// Sent when a marker is reached
void CWMPEventDispatch::MarkerHit(long MarkerNum )
{
    return;
}

// Indicates that the unit used to express duration and position has changed
void CWMPEventDispatch::DurationUnitChange(long NewDurationUnit)
{
    return;
}

// Indicates that the CD ROM media has changed
void CWMPEventDispatch::CdromMediaChange(long CdromNum)
{
    return;
}

// Sent when a playlist changes
void CWMPEventDispatch::PlaylistChange(IDispatch * Playlist,WMPPlaylistChangeEventType change)
{
    return;
}

// Sent when the current playlist changes
void CWMPEventDispatch::CurrentPlaylistChange(WMPPlaylistChangeEventType change )
{
    return;
}

// Sent when a current playlist item becomes available
void CWMPEventDispatch::CurrentPlaylistItemAvailable(BSTR bstrItemName)
{
    return;
}

// Sent when a media object changes
void CWMPEventDispatch::MediaChange(IDispatch * Item)
{
    return;
}

// Sent when a current media item becomes available
void CWMPEventDispatch::CurrentMediaItemAvailable(BSTR bstrItemName)
{
    return;
}

// Sent when the item selection on the current playlist changes
void CWMPEventDispatch::CurrentItemChange(IDispatch *pdispMedia)
{
    return;
}

// Sent when the media collection needs to be requeried
void CWMPEventDispatch::MediaCollectionChange()
{
    return;
}

// Sent when an attribute string is added in the media collection
void CWMPEventDispatch::MediaCollectionAttributeStringAdded(BSTR bstrAttribName, BSTR bstrAttribVal)
{
    return;
}

// Sent when an attribute string is removed from the media collection
void CWMPEventDispatch::MediaCollectionAttributeStringRemoved(BSTR bstrAttribName, BSTR bstrAttribVal)
{
    return;
}

// Sent when an attribute string is changed in the media collection
void CWMPEventDispatch::MediaCollectionAttributeStringChanged(BSTR bstrAttribName, BSTR bstrOldAttribVal, BSTR bstrNewAttribVal)
{
    return;
}

// Sent when playlist collection needs to be requeried
void CWMPEventDispatch::PlaylistCollectionChange()
{
    return;
}

// Sent when a playlist is added to the playlist collection
void CWMPEventDispatch::PlaylistCollectionPlaylistAdded(BSTR bstrPlaylistName)
{
    return;
}

// Sent when a playlist is removed from the playlist collection
void CWMPEventDispatch::PlaylistCollectionPlaylistRemoved(BSTR bstrPlaylistName)
{
    return;
}

// Sent when a playlist has been set or reset as deleted
void CWMPEventDispatch::PlaylistCollectionPlaylistSetAsDeleted(BSTR bstrPlaylistName, VARIANT_BOOL varfIsDeleted)
{
    return;
}

// Playlist playback mode has changed
void CWMPEventDispatch::ModeChange(BSTR ModeName, VARIANT_BOOL NewValue)
{
    return;
}

// Sent when the media object has an error condition
void CWMPEventDispatch::MediaError(IDispatch * pMediaObject)
{
	while ( ShowCursor( TRUE ) < 0 )
		;

	ShowWindow( g_hBlackFadingWindow, SW_HIDE );
	if ( g_pFrame )
	{
		g_pFrame->ShowWindow( SW_HIDE );
	}

	CComPtr< IWMPMedia > spWMPMedia;
	if ( pMediaObject )
	{
		pMediaObject->QueryInterface( &spWMPMedia );
	}
	if ( spWMPMedia )
	{
		BSTR bstr;
		spWMPMedia->get_sourceURL( &bstr );
		char str[ 1024 ];
		sprintf( str, "Unable to open media: %s\n", CW2T( bstr ) );
		MessageBox( NULL, str, "Media Error", MB_OK | MB_ICONERROR );
	}
	else
	{
		MessageBox( NULL, "Media Error", "Media Error", MB_OK | MB_ICONERROR );
	}

	g_pFrame->PostMessage( WM_CLOSE );
}

// Current playlist switch with no open state change
void CWMPEventDispatch::OpenPlaylistSwitch(IDispatch *pItem)
{
    return;
}

// Sent when the current DVD domain changes
void CWMPEventDispatch::DomainChange(BSTR strDomain)
{
    return;
}

// Sent when display switches to player application
void CWMPEventDispatch::SwitchedToPlayerApplication()
{
}

// Sent when display switches to control
void CWMPEventDispatch::SwitchedToControl()
{
}

// Sent when the player docks or undocks
void CWMPEventDispatch::PlayerDockedStateChange()
{
}

// Sent when the OCX reconnects to the player
void CWMPEventDispatch::PlayerReconnect()
{
}

// Occurs when a user clicks the mouse
void CWMPEventDispatch::Click( short nButton, short nShiftState, long fX, long fY )
{
	if ( IsFullScreen() )
	{
		SetFullScreen( false );
	}
}

// Occurs when a user double-clicks the mouse
void CWMPEventDispatch::DoubleClick( short nButton, short nShiftState, long fX, long fY )
{
	// the controls are just drawn into the main window, wheras the video has its own window
	// this check allows us to only fullscreen on doubleclick within the video area
	POINT pt = { fX, fY };
	HWND hWnd = g_pFrame->ChildWindowFromPoint( pt );
	if ( ChildWindowFromPoint( hWnd, pt ) != hWnd )
	{
		SetFullScreen( !IsFullScreen() );
	}
}

// Occurs when a key is pressed
void CWMPEventDispatch::KeyDown( short nKeyCode, short nShiftState )
{
#if 1
	if ( !g_pFrame )
		return;

	BOOL rval;
	if ( nShiftState & 4 ) // 4 is the alt keymask
	{
		g_pFrame->OnSysKeyDown( WM_KEYDOWN, nKeyCode, 0, rval );
	}
	else
	{
		g_pFrame->OnKeyDown( WM_KEYDOWN, nKeyCode, 0, rval );
	}
#endif
}

// Occurs when a key is pressed and released
void CWMPEventDispatch::KeyPress( short nKeyAscii )
{
	return;
}

// Occurs when a key is released
void CWMPEventDispatch::KeyUp( short nKeyCode, short nShiftState )
{
	return;
}

// Occurs when a mouse button is pressed
void CWMPEventDispatch::MouseDown( short nButton, short nShiftState, long fX, long fY )
{
}

// Occurs when a mouse pointer is moved
void CWMPEventDispatch::MouseMove( short nButton, short nShiftState, long fX, long fY )
{
    return;
}

// Occurs when a mouse button is released
void CWMPEventDispatch::MouseUp( short nButton, short nShiftState, long fX, long fY )
{
}