wingdi.c

uclinux 下的vlc播放器源代码

        p_vout->p_sys->i_pic_pitch = gxdisplayprop.cbyPitch;
        return VLC_EGENERIC;
    }
    else
    {
        GXDisplayProperties gxdisplayprop;
        RECT display_rect, dest_rect;
        uint8_t *p_dest, *p_src = p_pic->p->p_pixels;

        video_rect.left = i_x; video_rect.top = i_y;
        video_rect.right = i_x + i_width;
        video_rect.bottom = i_y + i_height;

        gxdisplayprop = GXGetDisplayProperties();
        display_rect.left = 0; display_rect.top = 0;
        display_rect.right = gxdisplayprop.cxWidth;
        display_rect.bottom = gxdisplayprop.cyHeight;

        if( !IntersectRect( &dest_rect, &video_rect, &display_rect ) )
        {
            return VLC_EGENERIC;
        }

#if 0
        msg_Err( p_vout, "video (%d,%d,%d,%d) display (%d,%d,%d,%d) "
                 "dest (%d,%d,%d,%d)",
                 video_rect.left, video_rect.right,
                 video_rect.top, video_rect.bottom,
                 display_rect.left, display_rect.right,
                 display_rect.top, display_rect.bottom,
                 dest_rect.left, dest_rect.right,
                 dest_rect.top, dest_rect.bottom );
#endif

        if( !(p_dest = GXBeginDraw()) )
        {
#if 0
            msg_Err( p_vout, "GXBeginDraw error %d ", GetLastError() );
#endif
            return VLC_EGENERIC;
        }

        p_src += (dest_rect.left - video_rect.left) * gxdisplayprop.cbxPitch +
            (dest_rect.top - video_rect.top) * p_pic->p->i_pitch;
        p_dest += dest_rect.left * gxdisplayprop.cbxPitch +
            dest_rect.top * gxdisplayprop.cbyPitch;
        i_width = dest_rect.right - dest_rect.left;
        i_height = dest_rect.bottom - dest_rect.top;

        p_pic->p->p_pixels = p_dest;
    }

    return VLC_SUCCESS;
}

static int GAPIUnlockSurface( vout_thread_t *p_vout, picture_t *p_pic )
{
    GXEndDraw();
    return VLC_SUCCESS;
}

static void DisplayGAPI( vout_thread_t *p_vout, picture_t *p_pic )
{
}
#endif

#undef rect_src
#undef rect_src_clipped
#undef rect_dest
#undef rect_dest_clipped
/*****************************************************************************
 * SetPalette: sets an 8 bpp palette
 *****************************************************************************/
static void SetPalette( vout_thread_t *p_vout,
                        uint16_t *red, uint16_t *green, uint16_t *blue )
{
    msg_Err( p_vout, "FIXME: SetPalette unimplemented" );
}

/*****************************************************************************
 * EventThread: Event handling thread
 *****************************************************************************/
static void EventThread ( vlc_object_t *p_event )
{
    vout_thread_t *p_vout;
    vlc_value_t   val;

    int        i_style;
    WNDCLASS   wc;
    MSG        msg;

    /* Initialisations */
    var_Get( p_event, "p_vout", &val );
    p_vout = (vout_thread_t *)val.p_address;

    /* Register window class */
    memset( &wc, 0, sizeof(wc) );
    wc.style          = CS_HREDRAW | CS_VREDRAW;
    wc.lpfnWndProc    = (WNDPROC)WndProc;
    wc.cbClsExtra     = 0;
    wc.cbWndExtra     = 0;
    wc.hInstance      = GetModuleHandle(NULL);
    wc.hIcon          = 0;
    wc.hCursor        = LoadCursor(NULL, IDC_ARROW);
    wc.hbrBackground  = (HBRUSH)GetStockObject( BLACK_BRUSH );
    wc.lpszMenuName   = 0;
    wc.lpszClassName  = _T("VLC WinGDI");
    RegisterClass( &wc );

    /* Register the video sub-window class */
    wc.lpszClassName = _T("VLC WinGDI video"); wc.hIcon = 0;
    RegisterClass(&wc);

    /* Create output window */
    p_vout->p_sys->hparent = (HWND)
        vout_RequestWindow( p_vout, &p_vout->p_sys->i_window_x,
                            &p_vout->p_sys->i_window_y,
                            (unsigned int *)&p_vout->p_sys->i_window_width,
                            (unsigned int *)&p_vout->p_sys->i_window_height );

    if( p_vout->p_sys->hparent )
        ShowWindow( p_vout->p_sys->hparent, SW_SHOW );

    if( p_vout->p_sys->hparent )
        i_style = WS_VISIBLE|WS_CLIPCHILDREN|WS_CHILD;
    else
        i_style = WS_OVERLAPPEDWINDOW|WS_SIZEBOX|WS_VISIBLE|WS_CLIPCHILDREN;

    p_vout->p_sys->i_window_style = i_style;

    p_vout->p_sys->hwnd =
        CreateWindow( _T("VLC WinGDI"), _T(VOUT_TITLE), i_style,
                      (p_vout->p_sys->i_window_x < 0) ? CW_USEDEFAULT :
                      p_vout->p_sys->i_window_x,   /* default X coordinate */
                      (p_vout->p_sys->i_window_y < 0) ? CW_USEDEFAULT :
                      p_vout->p_sys->i_window_y,   /* default Y coordinate */
                      p_vout->p_sys->i_window_width,
                      p_vout->p_sys->i_window_height + 10,
                      p_vout->p_sys->hparent, NULL,
                      GetModuleHandle(NULL), (LPVOID)p_vout );

    if( !p_vout->p_sys->hwnd )
    {
        msg_Warn( p_vout, "couldn't create window" );
        return;
    }
    msg_Warn( p_vout, "Created WinGDI window" );

    if( p_vout->p_sys->hparent )
    {
        LONG i_style;

        /* We don't want the window owner to overwrite our client area */
        i_style = GetWindowLong( p_vout->p_sys->hparent, GWL_STYLE );

        if( !(i_style & WS_CLIPCHILDREN) )
            /* Hmmm, apparently this is a blocking call... */
            SetWindowLong( p_vout->p_sys->hparent, GWL_STYLE,
                           i_style | WS_CLIPCHILDREN );

        /* Create our fullscreen window */
        p_vout->p_sys->hfswnd =
            CreateWindowEx( WS_EX_APPWINDOW, _T("VLC WinGDI"),
                            _T(VOUT_TITLE),
                            WS_NONAVDONEBUTTON|WS_CLIPCHILDREN,
                            CW_USEDEFAULT, CW_USEDEFAULT,
                            CW_USEDEFAULT, CW_USEDEFAULT,
                            NULL, NULL, GetModuleHandle(NULL), (LPVOID)p_vout);
    }

    /* Display our window */
    ShowWindow( p_vout->p_sys->hwnd, SW_SHOW );
    UpdateWindow( p_vout->p_sys->hwnd );

    /* Create video sub-window */
    p_vout->p_sys->hvideownd =
        CreateWindow( _T("VLC WinGDI video"), _T(""),   /* window class */
                    WS_CHILD | WS_VISIBLE,                   /* window style */
                    CW_USEDEFAULT, CW_USEDEFAULT,     /* default coordinates */
                    CW_USEDEFAULT, CW_USEDEFAULT,
                    p_vout->p_sys->hwnd,                  /* parent window */
                    NULL, GetModuleHandle(NULL),
                    (LPVOID)p_vout );            /* send p_vout to WM_CREATE */

    /* Initialize offscreen buffer */
    InitBuffers( p_vout );

    p_vout->pf_control = Control;

    /* Tell the video output we're ready to receive data */
    vlc_thread_ready( p_event );

    while( !p_event->b_die && GetMessage( &msg, 0, 0, 0 ) )
    {
        /* Check if we are asked to exit */
        if( p_event->b_die ) break;

        switch( msg.message )
        {
        case WM_KEYDOWN:
            switch( msg.wParam )
            {
            case VK_ESCAPE:
                p_event->p_vlc->b_die = VLC_TRUE;
                break;
            }
            TranslateMessage( &msg );
            break;

        case WM_CHAR:
            switch( msg.wParam )
            {
            case 'q':
            case 'Q':
                p_event->p_vlc->b_die = VLC_TRUE;
                break;
            }
            break;

        default:
            TranslateMessage( &msg );
            DispatchMessage( &msg );
            break;
        }
    }

    msg_Dbg( p_vout, "CloseWindow" );

#ifdef MODULE_NAME_IS_wingapi
    GXCloseDisplay();
#else
    DeleteDC( p_vout->p_sys->off_dc );
    DeleteObject( p_vout->p_sys->off_bitmap );
#endif

    DestroyWindow( p_vout->p_sys->hwnd );
    if( p_vout->p_sys->hfswnd ) DestroyWindow( p_vout->p_sys->hfswnd );

    if( p_vout->p_sys->hparent )
        vout_ReleaseWindow( p_vout, (void *)p_vout->p_sys->hparent );
}

/*****************************************************************************
 * UpdateRects: update clipping rectangles
 *****************************************************************************
 * This function is called when the window position or size are changed, and
 * its job is to update the source and destination RECTs used to display the
 * picture.
 *****************************************************************************/
static void UpdateRects( vout_thread_t *p_vout, vlc_bool_t b_force )
{
#define rect_src p_vout->p_sys->rect_src
#define rect_src_clipped p_vout->p_sys->rect_src_clipped
#define rect_dest p_vout->p_sys->rect_dest
#define rect_dest_clipped p_vout->p_sys->rect_dest_clipped

    int i_width, i_height, i_x, i_y;

    RECT  rect;
    POINT point;

    /* Retrieve the window size */
    GetClientRect( p_vout->p_sys->hwnd, &rect );

    /* Retrieve the window position */
    point.x = point.y = 0;
    ClientToScreen( p_vout->p_sys->hwnd, &point );

    /* If nothing changed, we can return */
    if( !b_force
         && p_vout->p_sys->i_window_width == rect.right
         && p_vout->p_sys->i_window_height == rect.bottom
         && p_vout->p_sys->i_window_x == point.x
         && p_vout->p_sys->i_window_y == point.y )
    {
        return;
    }

    /* Update the window position and size */
    p_vout->p_sys->i_window_x = point.x;
    p_vout->p_sys->i_window_y = point.y;
    p_vout->p_sys->i_window_width = rect.right;
    p_vout->p_sys->i_window_height = rect.bottom;

    vout_PlacePicture( p_vout, rect.right, rect.bottom,
                       &i_x, &i_y, &i_width, &i_height );

    if( p_vout->p_sys->hvideownd )
        SetWindowPos( p_vout->p_sys->hvideownd, HWND_TOP,
                      i_x, i_y, i_width, i_height, 0 );

    /* Destination image position and dimensions */
    rect_dest.left = point.x + i_x;
    rect_dest.right = rect_dest.left + i_width;
    rect_dest.top = point.y + i_y;
    rect_dest.bottom = rect_dest.top + i_height;

    /* Clip the destination window */
    if( !IntersectRect( &rect_dest_clipped, &rect_dest,
                        &p_vout->p_sys->rect_display ) )
    {
        SetRectEmpty( &rect_src_clipped );
        return;
    }

#if 0
    msg_Dbg( p_vout, "image_dst_clipped coords: %i,%i,%i,%i",
                     rect_dest_clipped.left, rect_dest_clipped.top,
                     rect_dest_clipped.right, rect_dest_clipped.bottom );
#endif

    /* the 2 following lines are to fix a bug when clicking on the desktop */
    if( (rect_dest_clipped.right - rect_dest_clipped.left)==0 ||
        (rect_dest_clipped.bottom - rect_dest_clipped.top)==0 )
    {
        SetRectEmpty( &rect_src_clipped );
        return;
    }

    /* src image dimensions */
    rect_src.left = 0;
    rect_src.top = 0;
    rect_src.right = p_vout->output.i_width;
    rect_src.bottom = p_vout->output.i_height;

    /* Clip the source image */
    rect_src_clipped.left = (rect_dest_clipped.left - rect_dest.left) *
      p_vout->output.i_width / (rect_dest.right - rect_dest.left);
    rect_src_clipped.right = p_vout->output.i_width -
      (rect_dest.right - rect_dest_clipped.right) * p_vout->output.i_width /
      (rect_dest.right - rect_dest.left);
    rect_src_clipped.top = (rect_dest_clipped.top - rect_dest.top) *
      p_vout->output.i_height / (rect_dest.bottom - rect_dest.top);
    rect_src_clipped.bottom = p_vout->output.i_height -
      (rect_dest.bottom - rect_dest_clipped.bottom) * p_vout->output.i_height /
      (rect_dest.bottom - rect_dest.top);

#if 0
    msg_Dbg( p_vout, "image_src_clipped coords: %i,%i,%i,%i",
                     rect_src_clipped.left, rect_src_clipped.top,
                     rect_src_clipped.right, rect_src_clipped.bottom );