directx.c

uclinux 下的vlc播放器源代码

                SetParent( p_vout->p_sys->hwnd, hwnd );
                SetWindowPos( p_vout->p_sys->hwnd, 0, 0, 0,
                              rect.right, rect.bottom,
                              SWP_NOZORDER|SWP_FRAMECHANGED );
            }

            SetForegroundWindow( hwnd );
        }
        else
        {
            /* Change window style, no borders and no title bar */
            SetWindowLong( hwnd, GWL_STYLE, p_vout->p_sys->i_window_style );

            /* Normal window */
            window_placement.showCmd = SW_SHOWNORMAL;
            SetWindowPlacement( hwnd, &window_placement );
            SetWindowPos( hwnd, 0, 0, 0, 0, 0,
                          SWP_NOMOVE|SWP_NOSIZE|SWP_NOZORDER|SWP_FRAMECHANGED);

            if( p_vout->p_sys->hparent )
            {
                RECT rect;
                GetClientRect( p_vout->p_sys->hparent, &rect );
                SetParent( p_vout->p_sys->hwnd, p_vout->p_sys->hparent );
                SetWindowPos( p_vout->p_sys->hwnd, 0, 0, 0,
                              rect.right, rect.bottom,
                              SWP_NOZORDER|SWP_FRAMECHANGED );

                ShowWindow( hwnd, SW_HIDE );
                SetForegroundWindow( p_vout->p_sys->hparent );
            }

            /* Make sure the mouse cursor is displayed */
            PostMessage( p_vout->p_sys->hwnd, WM_VLC_SHOW_MOUSE, 0, 0 );
        }

        /* Update the object variable and trigger callback */
        val.b_bool = p_vout->b_fullscreen;
        var_Set( p_vout, "fullscreen", val );

        p_vout->i_changes &= ~VOUT_FULLSCREEN_CHANGE;
        p_vout->p_sys->i_changes &= ~VOUT_FULLSCREEN_CHANGE;
    }

    /*
     * Pointer change
     */
    if( p_vout->b_fullscreen && !p_vout->p_sys->b_cursor_hidden &&
        (mdate() - p_vout->p_sys->i_lastmoved) > 5000000 )
    {
        POINT point;
        HWND hwnd;

        /* Hide the cursor only if it is inside our window */
        GetCursorPos( &point );
        hwnd = WindowFromPoint(point);
        if( hwnd == p_vout->p_sys->hwnd || hwnd == p_vout->p_sys->hvideownd )
        {
            PostMessage( p_vout->p_sys->hwnd, WM_VLC_HIDE_MOUSE, 0, 0 );
        }
        else
        {
            p_vout->p_sys->i_lastmoved = mdate();
        }
    }

    /*
     * "Always on top" status change
     */
    if( p_vout->p_sys->b_on_top_change )
    {
        vlc_value_t val;
        HMENU hMenu = GetSystemMenu( p_vout->p_sys->hwnd, FALSE );

        var_Get( p_vout, "video-on-top", &val );

        /* Set the window on top if necessary */
        if( val.b_bool && !( GetWindowLong( p_vout->p_sys->hwnd, GWL_EXSTYLE )
                           & WS_EX_TOPMOST ) )
        {
            CheckMenuItem( hMenu, IDM_TOGGLE_ON_TOP,
                           MF_BYCOMMAND | MFS_CHECKED );
            SetWindowPos( p_vout->p_sys->hwnd, HWND_TOPMOST, 0, 0, 0, 0,
                          SWP_NOSIZE | SWP_NOMOVE );
        }
        else
        /* The window shouldn't be on top */
        if( !val.b_bool && ( GetWindowLong( p_vout->p_sys->hwnd, GWL_EXSTYLE )
                           & WS_EX_TOPMOST ) )
        {
            CheckMenuItem( hMenu, IDM_TOGGLE_ON_TOP,
                           MF_BYCOMMAND | MFS_UNCHECKED );
            SetWindowPos( p_vout->p_sys->hwnd, HWND_NOTOPMOST, 0, 0, 0, 0,
                          SWP_NOSIZE | SWP_NOMOVE );
        }

        p_vout->p_sys->b_on_top_change = VLC_FALSE;
    }

    /* Check if the event thread is still running */
    if( p_vout->p_sys->p_event->b_die )
    {
        return VLC_EGENERIC; /* exit */
    }

    return VLC_SUCCESS;
}

/*****************************************************************************
 * Display: displays previously rendered output
 *****************************************************************************
 * This function sends the currently rendered image to the display, wait until
 * it is displayed and switch the two rendering buffers, preparing next frame.
 *****************************************************************************/
static void Display( vout_thread_t *p_vout, picture_t *p_pic )
{
    HRESULT dxresult;

    if( (p_vout->p_sys->p_display == NULL) )
    {
        msg_Warn( p_vout, "no display!" );
        return;
    }

    /* Our surface can be lost so be sure to check this
     * and restore it if need be */
    if( IDirectDrawSurface2_IsLost( p_vout->p_sys->p_display )
        == DDERR_SURFACELOST )
    {
        if( IDirectDrawSurface2_Restore( p_vout->p_sys->p_display ) == DD_OK &&
            p_vout->p_sys->b_using_overlay )
            E_(DirectXUpdateOverlay)( p_vout );
    }

    if( !p_vout->p_sys->b_using_overlay )
    {
        DDBLTFX  ddbltfx;

        /* We ask for the "NOTEARING" option */
        memset( &ddbltfx, 0, sizeof(DDBLTFX) );
        ddbltfx.dwSize = sizeof(DDBLTFX);
        ddbltfx.dwDDFX = DDBLTFX_NOTEARING;

        /* Blit video surface to display */
        dxresult = IDirectDrawSurface2_Blt( p_vout->p_sys->p_display,
                                            &p_vout->p_sys->rect_dest_clipped,
                                            p_pic->p_sys->p_surface,
                                            &p_vout->p_sys->rect_src_clipped,
                                            DDBLT_ASYNC, &ddbltfx );
        if( dxresult != DD_OK )
        {
            msg_Warn( p_vout, "could not blit surface (error %li)", dxresult );
            return;
        }
        else
        {
            /* if set, remove the black brush to avoid flickering in repaint operations */
            if( 0UL != GetClassLong( p_vout->p_sys->hvideownd, GCL_HBRBACKGROUND) )
            {
                SetClassLong(p_vout->p_sys->hvideownd, GCL_HBRBACKGROUND, (ULONG)0UL);
            }
        }
    }
    else /* using overlay */
    {
        /* Flip the overlay buffers if we are using back buffers */
        if( p_pic->p_sys->p_front_surface == p_pic->p_sys->p_surface )
        {
            return;
        }

        dxresult = IDirectDrawSurface2_Flip( p_pic->p_sys->p_front_surface,
                                             NULL, DDFLIP_WAIT );
        if( dxresult != DD_OK )
        {
            msg_Warn( p_vout, "could not flip overlay (error %li)", dxresult );
        }

        /* set currently displayed pic */
        p_vout->p_sys->p_current_surface = p_pic->p_sys->p_front_surface;

        /* Lock surface to get all the required info */
        if( DirectXLockSurface( p_vout, p_pic ) )
        {
            /* AAARRGG */
            msg_Warn( p_vout, "cannot lock surface" );
            return;
        }
        DirectXUnlockSurface( p_vout, p_pic );
    }
}

/*
** this function is only used once when the first picture is received
** The overlay colorkey replaces black as the background color on the
** video window; this will cause the overlay surface to be displayed
*/
static void OverlayDisplay( vout_thread_t *p_vout, picture_t *p_pic )
{
    /* get initial picture rendered on overlay surface */
    Display(p_vout, p_pic);

    IDirectDraw_WaitForVerticalBlank(p_vout->p_sys->p_ddobject,
            DDWAITVB_BLOCKBEGIN, NULL);

    /* set the colorkey as the backgound brush for the video window */
    SetClassLong( p_vout->p_sys->hvideownd, GCL_HBRBACKGROUND,
                  (LONG)CreateSolidBrush( p_vout->p_sys->i_rgb_colorkey ) );
    InvalidateRect( p_vout->p_sys->hvideownd, NULL, TRUE );

    /* use and restores proper display function for further pictures */
    p_vout->pf_display = Display;
}

/* following functions are local */

/*****************************************************************************
 * DirectXEnumCallback: Device enumeration
 *****************************************************************************
 * This callback function is called by DirectDraw once for each
 * available DirectDraw device.
 *****************************************************************************/
BOOL WINAPI DirectXEnumCallback( GUID* p_guid, LPTSTR psz_desc,
                                 LPTSTR psz_drivername, VOID* p_context,
                                 HMONITOR hmon )
{
    vout_thread_t *p_vout = (vout_thread_t *)p_context;
    vlc_value_t device;

    msg_Dbg( p_vout, "DirectXEnumCallback: %s, %s", psz_desc, psz_drivername );

    if( hmon )
    {
        var_Get( p_vout, "directx-device", &device );

        if( ( !device.psz_string || !*device.psz_string ) &&
            hmon == p_vout->p_sys->hmonitor )
        {
            if( device.psz_string ) free( device.psz_string );
        }
        else if( strcmp( psz_drivername, device.psz_string ) == 0 )
        {
            MONITORINFO monitor_info;
            monitor_info.cbSize = sizeof( MONITORINFO );

            if( p_vout->p_sys->GetMonitorInfo( hmon, &monitor_info ) )
            {
                RECT rect;

                /* Move window to the right screen */
                GetWindowRect( p_vout->p_sys->hwnd, &rect );
                if( !IntersectRect( &rect, &rect, &monitor_info.rcWork ) )
                {
                    rect.left = monitor_info.rcWork.left;
                    rect.top = monitor_info.rcWork.top;
                    msg_Dbg( p_vout, "DirectXEnumCallback: setting window "
                             "position to %ld,%ld", rect.left, rect.top );
                    SetWindowPos( p_vout->p_sys->hwnd, NULL,
                                  rect.left, rect.top, 0, 0,
                                  SWP_NOSIZE | SWP_NOZORDER | SWP_NOACTIVATE );
                }
            }

            p_vout->p_sys->hmonitor = hmon;
            if( device.psz_string ) free( device.psz_string );
        }
        else
        {
            if( device.psz_string ) free( device.psz_string );
            return TRUE; /* Keep enumerating */
        }

        msg_Dbg( p_vout, "selecting %s, %s", psz_desc, psz_drivername );
        p_vout->p_sys->p_display_driver = malloc( sizeof(GUID) );
        if( p_vout->p_sys->p_display_driver )
            memcpy( p_vout->p_sys->p_display_driver, p_guid, sizeof(GUID) );
    }

    return TRUE; /* Keep enumerating */
}

/*****************************************************************************
 * DirectXInitDDraw: Takes care of all the DirectDraw initialisations
 *****************************************************************************
 * This function initialise and allocate resources for DirectDraw.
 *****************************************************************************/
static int DirectXInitDDraw( vout_thread_t *p_vout )
{
    HRESULT dxresult;
    HRESULT (WINAPI *OurDirectDrawCreate)(GUID *,LPDIRECTDRAW *,IUnknown *);
    HRESULT (WINAPI *OurDirectDrawEnumerateEx)( LPDDENUMCALLBACKEXA, LPVOID,
                                                DWORD );
    LPDIRECTDRAW p_ddobject;

    msg_Dbg( p_vout, "DirectXInitDDraw" );

    /* Load direct draw DLL */
    p_vout->p_sys->hddraw_dll = LoadLibrary(_T("DDRAW.DLL"));
    if( p_vout->p_sys->hddraw_dll == NULL )
    {
        msg_Warn( p_vout, "DirectXInitDDraw failed loading ddraw.dll" );
        goto error;
    }

    OurDirectDrawCreate =
      (void *)GetProcAddress( p_vout->p_sys->hddraw_dll,
                              _T("DirectDrawCreate") );
    if( OurDirectDrawCreate == NULL )
    {
        msg_Err( p_vout, "DirectXInitDDraw failed GetProcAddress" );
        goto error;
    }

    OurDirectDrawEnumerateEx =
      (void *)GetProcAddress( p_vout->p_sys->hddraw_dll,
#ifndef UNICODE
                              "DirectDrawEnumerateExA" );
#else
                              _T("DirectDrawEnumerateExW") );
#endif

    if( OurDirectDrawEnumerateEx && p_vout->p_sys->MonitorFromWindow )
    {
        vlc_value_t device;

        var_Get( p_vout, "directx-device", &device );
        if( device.psz_string )
        {
            msg_Dbg( p_vout, "directx-device: %s", device.psz_string );
            free( device.psz_string );
        }

        p_vout->p_sys->hmonitor =
            p_vout->p_sys->MonitorFromWindow( p_vout->p_sys->hwnd,
                                              MONITOR_DEFAULTTONEAREST );

        /* Enumerate displays */
        OurDirectDrawEnumerateEx( DirectXEnumCallback, p_vout,