C++ IDirectFBSurface::Flip方法代码示例

static void
app_update( App *app )
{
     static const DFBColor colors[3] = {
          { 0xff, 0x30, 0xc0, 0xff },
          { 0xff, 0xff, 0xff, 0x30 },
          { 0xff, 0x30, 0xff, 0xc0 }
     };

     IDirectFBSurface *surface = app->surface;

     surface->Clear( surface, 0xff, 0xff, 0xff, 0x20 );

     surface->SetColor( surface, colors[app->index].r, colors[app->index].g, colors[app->index].b, colors[app->index].a );
     surface->FillRectangle( surface, app->anim_x, app->anim_y, 40, 300 );

     surface->Flip( surface, NULL, DSFLIP_WAITFORSYNC );


     app->anim_x += app->anim_dirx;
     if (app->anim_x >= app->resolution.w - 40)
          app->anim_dirx = -5;
     else if (app->anim_x <= 0)
          app->anim_dirx = 5;

     app->anim_y += app->anim_diry;
     if (app->anim_y >= app->resolution.h - 300)
          app->anim_diry = -5;
     else if (app->anim_y <= 0)
          app->anim_diry = 5;
          
}

static void Display(vout_display_t *vd, picture_t *picture)
{
    vout_display_sys_t *sys = vd->sys;

    IDirectFBSurface *primary = sys->primary;

    void *pixels;
    int  pitch;
    if (primary->Lock(primary, DSLF_WRITE, &pixels, &pitch) == DFB_OK) {
        picture_resource_t rsc;

        memset(&rsc, 0, sizeof(rsc));
        rsc.p[0].p_pixels = pixels;
        rsc.p[0].i_lines  = sys->height;
        rsc.p[0].i_pitch  = pitch;

        picture_t *direct = picture_NewFromResource(&vd->fmt, &rsc);
        if (direct) {
            picture_Copy(direct, picture);
            picture_Release(direct);
        }

        if (primary->Unlock(primary) == DFB_OK)
            primary->Flip(primary, NULL, 0);
    }
    picture_Release(picture);
}

static int OpenDisplay(vout_display_t *vd)
{
    vout_display_sys_t *sys = vd->sys;

    DFBSurfaceDescription dsc;
    /*dsc.flags = DSDESC_CAPS | DSDESC_HEIGHT | DSDESC_WIDTH;*/
    dsc.flags = DSDESC_CAPS;
    dsc.caps  = DSCAPS_PRIMARY | DSCAPS_FLIPPING;
    /*dsc.width = 352;*/
    /*dsc.height = 240;*/

    IDirectFB *directfb = NULL;
    if (DirectFBCreate(&directfb) != DFB_OK || !directfb)
        return VLC_EGENERIC;
    sys->directfb = directfb;

    IDirectFBSurface *primary = NULL;
    if (directfb->CreateSurface(directfb, &dsc, &primary) || !primary)
        return VLC_EGENERIC;
    sys->primary = primary;

    primary->GetSize(primary, &sys->width, &sys->height);
    primary->GetPixelFormat(primary, &sys->pixel_format);
    primary->FillRectangle(primary, 0, 0, sys->width, sys->height);
    primary->Flip(primary, NULL, 0);

    return VLC_SUCCESS;
}

static mrb_value surface_flip(mrb_state *mrb, mrb_value self)
{
    IDirectFBSurface* surface = mrb_directfb_surface(mrb, self);
    DFBResult ret = -1;
    if (surface != NULL) {
        mrb_value o = mrb_nil_value();
        mrb_int flags = 0;
        mrb_get_args(mrb, "|oi", &o, &flags);
        ret = surface->Flip(surface, mrb_directfb_region(mrb, o), flags);
    }
    return mrb_fixnum_value(ret);
}

//---------------------------------------------------------------------------------
status_t ServerWindow::Show (){

if (created){
  IDirectFBSurface *wsurface = NULL;
  
  DFBCHECK(window->SetStackingClass(window, DWSC_MIDDLE));
  DFBCHECK(window->RaiseToTop(window));
  DFBCHECK(window->GetSurface(window, &wsurface));  
  DFBCHECK (wsurface->Flip (wsurface, NULL, DSFLIP_WAITFORSYNC));
  window->SetOpacity (window, 0xff);
  hidden = false;
  active = true;
}
}

static int l_Flip (lua_State* L)
{
	// TEMP: NULL,0?
	// [ sfc ]
	IDirectFBSurface* sfc = * (IDirectFBSurface**) luaL_checkudata(L, 1, "ldirectfb.IDirectFBSurface");
	DFBCHECK (sfc->Flip (sfc, NULL, DSFLIP_WAITFORSYNC));
	//DFBCHECK (sfc->Flip (sfc, NULL, 0));
	//DFBCHECK (sfc->Flip (sfc, NULL, DSFLIP_BLIT));
	return 0;
}

static void
update( Context *context )
{
     unsigned long     t;
     IDirectFBSurface *surface = context->surface;
     static __u8  r = 0, g = 0, b = 0;
    
     
     context->gl->Lock( context->gl );

     glClearColor( r++/255.0, g++/255.0, b++/255.0, 1.0 );
     glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
     
     context->gl->Unlock( context->gl );
     
     if (context->fps) {
          char buf[16];

          snprintf(buf, sizeof(buf), "%.1f FPS\n", context->fps);

          surface->SetColor( surface, 0xff, 0x00, 0x00, 0xff );
          surface->DrawString( surface, buf, -1,
                               context->width - 5, 5, DSTF_TOPRIGHT );
     }
     
     surface->Flip( surface, NULL, 0 );

     context->frames++;

     t = get_millis();
     if (t - context->last_time >= 2000) {
          float seconds = (t - context->last_time) / 1000.0f;

          context->fps = context->frames / seconds;

          context->last_time = t;
          context->frames    = 0;
     }
}

static void* render_loop (void *arg)
{
     IDirectFBSurface *view = (IDirectFBSurface*)arg;

     view->SetBlittingFlags( view, DSBLIT_SRC_COLORKEY | DSBLIT_COLORIZE );

     while (started_rendering()) {
          int i;

          pthread_testcancel();

          view->SetColor( view, 0, 0, 0, 0 );
          view->FillRectangle( view, 0, 0, xres, yres );

          for (i=0; i<STARFIELD_SIZE; i++) {
               int map = (int)(t_starfield[i].pos.v[Z]) >> 8;
               int light = 0xFF - ((int)(t_starfield[i].pos.v[Z] * t_starfield[i].pos.v[Z]) >> 12);

               if (map >= 0 && light > 0) {
                    if (map >= NUM_STARS)
                         map = NUM_STARS - 1;

                    view->SetColor( view, light, light, light, 0xff );
                    view->Blit( view, stars[map], NULL,
                                (int)(t_starfield[i].pos.v[X]),
                                (int)(t_starfield[i].pos.v[Y]) );
               }
          }

          view->Flip( view, NULL, DSFLIP_WAITFORSYNC );

          finished_rendering();
     }

     pthread_testcancel();

     return NULL;
}

//.........这里部分代码省略.........
     if (ret) {
          D_DERROR( ret, "DFBTest/Font: DirectFBInit() failed!\n" );
          return ret;
     }

     /* Parse arguments. */
     for (i=1; i<argc; i++) {
          const char *arg = argv[i];

          if (strcmp( arg, "-h" ) == 0 || strcmp (arg, "--help") == 0)
               return print_usage( argv[0] );
          else if (strcmp (arg, "-v") == 0 || strcmp (arg, "--version") == 0) {
               fprintf (stderr, "dfbtest_blit version %s\n", DIRECTFB_VERSION);
               return false;
          }
          else if (strcmp (arg, "-o") == 0 || strcmp (arg, "--outline") == 0) {
               attributes |= DFFA_OUTLINED;
               text_flags |= DSTF_OUTLINE;
          }
          else if (strcmp (arg, "-ow") == 0 || strcmp (arg, "--outline-width") == 0) {
               if (++i == argc)
                    return print_usage( argv[0] );

               if (sscanf( argv[i], "%d", &outline_width ) != 1)
                    return print_usage( argv[0] );

               outline_width <<= 16;
          }
          else if (strcmp (arg, "-oo") == 0 || strcmp (arg, "--outline-opacity") == 0) {
               if (++i == argc)
                    return print_usage( argv[0] );

               if (sscanf( argv[i], "%d", &outline_opacity ) != 1)
                    return print_usage( argv[0] );
          }
          else if (!url)
               url = arg;
          else
               return print_usage( argv[0] );
     }

     /* Check if we got an URL. */
     if (!url)
          return print_usage( argv[0] );

     /* Create super interface. */
     ret = DirectFBCreate( &dfb );
     if (ret) {
          D_DERROR( ret, "DFBTest/Font: DirectFBCreate() failed!\n" );
          return ret;
     }

     /* Fill description for a primary surface. */
     desc.flags = DSDESC_CAPS;
     desc.caps  = DSCAPS_PRIMARY | DSCAPS_FLIPPING;

     dfb->SetCooperativeLevel( dfb, DFSCL_FULLSCREEN );

     /* Create a primary surface. */
     ret = dfb->CreateSurface( dfb, &desc, &dest );
     if (ret) {
          D_DERROR( ret, "DFBTest/Font: IDirectFB::CreateSurface() failed!\n" );
          goto out;
     }

     dest->GetSize( dest, &desc.width, &desc.height );
     dest->GetPixelFormat( dest, &desc.pixelformat );

     D_INFO( "DFBTest/Font: Destination is %dx%d using %s\n",
             desc.width, desc.height, dfb_pixelformat_name(desc.pixelformat) );

     for (i=10; i<50; i++) {
          IDirectFBFont *font;

          font = CreateFont( dfb, url, i, attributes, outline_width, outline_opacity );

          RenderChecker( dest, 64, 64 );

          dest->SetColors( dest, color_ids, colors, 2 );

          dest->SetFont( dest, font );
          dest->DrawString( dest, "Test String AVAWA", -1, 100, 100, text_flags );

          dest->Flip( dest, NULL, DSFLIP_NONE );

          font->Release( font );

          usleep( 500000 );
     }


out:
     if (dest)
          dest->Release( dest );

     /* Shutdown DirectFB. */
     dfb->Release( dfb );

     return ret;
}

int
main( int argc, char *argv[] )
{
     DFBResult              ret;
     bool                   quit = false;
     int                    i;
     IDirectFB              dfb;
     IDirectFBDisplayLayer  layer;
     IDirectFBSurface       surface;
     DFBDisplayLayerConfig  config;
     DFBDimension           sizes[2]  = { {400, 400}, {600, 600} };
     size_t                 num_sizes = D_ARRAY_SIZE(sizes);
     DFBInputEvent          evt;
     IDirectFBEventBuffer   keybuffer;

     /* Initialize DirectFB. */
     DirectFB::Init( &argc, &argv );

     /* Create super interface. */
     dfb = DirectFB::Create();

     layer = dfb.GetDisplayLayer( DLID_PRIMARY );

     /* Create an input buffer for key events */
     keybuffer = dfb.CreateInputEventBuffer( DICAPS_KEYS, DFB_TRUE );

     layer.SetCooperativeLevel( DLSCL_EXCLUSIVE );

     layer.GetConfiguration( &config );

     config.width  = sizes[0].w;
     config.height = sizes[0].h;

     layer.SetConfiguration( config );

     surface = layer.GetSurface();

     while (true) {
          surface.Clear( 0, 0, 0, 0xff );

          surface.SetColor( 0x00, 0xff, 0x00, 0xff );
          surface.DrawRectangle( 0, 0, config.width, config.height );

          surface.Flip( NULL, DSFLIP_NONE );


          keybuffer.WaitForEventWithTimeout( 3, 0 );

          /* Process keybuffer */
          while (keybuffer.GetEvent( DFB_EVENT(&evt) )) {
              if (evt.type == DIET_KEYPRESS) {
                  switch (DFB_LOWER_CASE(evt.key_symbol)) {
                      case DIKS_ESCAPE:
                      case DIKS_SMALL_Q:
                      case DIKS_BACK:
                      case DIKS_STOP:
                      case DIKS_EXIT:
                          /* Quit main loop & test thread */
                          quit = 1;
                          break;

                      case DIKS_SPACE:
                      case DIKS_OK:
                          i++;

                          config.width  = sizes[i % num_sizes].w;
                          config.height = sizes[i % num_sizes].h;

                          layer.SetConfiguration( config );
                          break;

                      default:
                          break;
                  }
              }
          }
     }

     return 0;
}

//.........这里部分代码省略.........
     ret = provider->GetSurfaceDescription( provider, &desc );
     if (ret) {
          D_DERROR( ret, "DFBTest/Blit: IDirectFBImageProvider::GetSurfaceDescription() failed!\n" );
          goto out;
     }

     if (source_format != DSPF_UNKNOWN)
          desc.pixelformat = source_format;
     
     D_INFO( "DFBTest/Blit: Source is %dx%d using %s\n",
             desc.width, desc.height, dfb_pixelformat_name(desc.pixelformat) );

     /* Create a surface for the image. */
     ret = dfb->CreateSurface( dfb, &desc, &source );
     if (ret) {
          D_DERROR( ret, "DFBTest/Blit: IDirectFB::CreateSurface() failed!\n" );
          goto out;
     }
     
     ret = provider->RenderTo( provider, source, NULL );
     if (ret) {
          D_DERROR( ret, "DFBTest/Blit: IDirectFBImageProvider::RenderTo() failed!\n" );
          goto out;
     }

     /* Fill description for a primary surface. */
     desc.flags = DSDESC_CAPS;
     desc.caps  = DSCAPS_PRIMARY | DSCAPS_FLIPPING;

     if (dest_format != DSPF_UNKNOWN) {
          desc.flags       |= DSDESC_PIXELFORMAT;
          desc.pixelformat  = dest_format;
     }

     if (dest_resize)
          desc.flags |= DSDESC_WIDTH | DSDESC_HEIGHT;

     dfb->SetCooperativeLevel( dfb, DFSCL_FULLSCREEN );

     /* Create a primary surface. */
     ret = dfb->CreateSurface( dfb, &desc, &dest );
     if (ret) {
          D_DERROR( ret, "DFBTest/Blit: IDirectFB::CreateSurface() failed!\n" );
          goto out;
     }

     dest->GetSize( dest, &desc.width, &desc.height );
     dest->GetPixelFormat( dest, &desc.pixelformat );

     D_INFO( "DFBTest/Blit: Destination is %dx%d using %s\n",
             desc.width, desc.height, dfb_pixelformat_name(desc.pixelformat) );

     for (i=0; i<100000; i++) {
          int j,n = rand()%100;

          for (j=0; j<n; j++) {
               switch (rand()%3) {
                    case 0:
                         dest->SetDrawingFlags( dest, rand() & (DSDRAW_BLEND) );
                         dest->FillRectangle( dest, rand()%100, rand()%100, rand()%100, rand()%100 );
                         break;

                    case 1:
                         dest->SetBlittingFlags( dest, rand() & (DSBLIT_BLEND_ALPHACHANNEL |
                                                                 DSBLIT_BLEND_COLORALPHA   |
                                                                 DSBLIT_COLORIZE           |
                                                                 DSBLIT_ROTATE90) );
                         dest->Blit( dest, source, NULL, rand()%100, rand()%100 );
                         break;

                    case 2:
                         dest->SetBlittingFlags( dest, rand() & (DSBLIT_BLEND_ALPHACHANNEL |
                                                                 DSBLIT_BLEND_COLORALPHA   |
                                                                 DSBLIT_COLORIZE           |
                                                                 DSBLIT_ROTATE90) );
                         dest->StretchBlit( dest, source, NULL, NULL );
                         break;
               }
          }

          dfb->WaitIdle( dfb );

          dest->Flip( dest, NULL, DSFLIP_NONE );
     }

out:
     if (dest)
          dest->Release( dest );

     if (source)
          source->Release( source );

     if (provider)
          provider->Release( provider );

     /* Shutdown DirectFB. */
     dfb->Release( dfb );

     return ret;
}

static void *handle_record_button(DirectThread *thread, void *arg)
{
	IDirectFBSurface *surface = arg;
	IDirectFBFont 		*font, *font_s;
	DFBFontDescription 	font_desc;
	bool local_flg = false;
	int width, height;
	int font_big_height, font_little_height;
	
	char font_file[50] = "/misc/font/wqy-zenhei.ttc";
	
	DFBCHECK(surface->GetSize(surface, &width, &height));
	
	font_big_height = 48;
	while(font_big_height > (height / 2))
	{
		font_big_height -= 4;
	}
	font_desc.flags = DFDESC_HEIGHT;
	font_desc.height = font_big_height;
	DFBCHECK(dfb->CreateFont( dfb, font_file,  &font_desc, &font));
	
	font_little_height = 32;
	while(font_little_height > (height / 4))
	{
		font_little_height -= 4;
	}
	font_desc.height = font_little_height;
	DFBCHECK(dfb->CreateFont( dfb, font_file,  &font_desc, &font_s));
	
	printf("font size is %d %d\n", font_big_height, font_little_height);
	
	DFBCHECK(surface->SetFont(surface, font_s));
	
	DFBCHECK(surface->SetColor(surface, 0x8C, 0x8C, 0x8C, 0xff));
	DFBCHECK(surface->DrawString(surface, "点击录音", -1, width / 2, 0, DSTF_TOPCENTER));
	
	DFBCHECK(surface->SetColor(surface, 0x41, 0x41, 0x41, 0xff));
	DFBCHECK(surface->DrawString(surface, "测试TP请避开此区域", -1, width / 2, height / 4, DSTF_TOPCENTER));
	
	DFBCHECK(surface->SetFont(surface, font));
	DFBCHECK(surface->SetColor(surface, 0xE3, 0x6C, 0x4C, 0xff));
	DFBCHECK(surface->DrawString(surface, "状态：停止录音", -1, width / 2, height / 2, DSTF_TOPCENTER));
	DFBCHECK(surface->Flip(surface, NULL, 0));
	while(true)
	{
		if(record_flg != local_flg)
		{
			local_flg = record_flg;
			DFBCHECK(surface->SetColor(surface, 0xff, 0xff, 0xff, 0xff));
			DFBCHECK(surface->FillRectangle(surface, 0 , height / 2, width, font_big_height + 4));  //need fix
			DFBCHECK(surface->SetColor(surface, 0xE3, 0x6C, 0x4C, 0xff));
			if(local_flg)
			{
				DFBCHECK(surface->DrawString(surface, "状态：正在录音", -1, width / 2, height / 2, DSTF_TOPCENTER));
			}
			else
			{
				DFBCHECK(surface->DrawString(surface, "状态：停止录音", -1, width / 2, height / 2, DSTF_TOPCENTER));
			}
			DFBCHECK(surface->Flip(surface, NULL, 0));
		}
		direct_thread_sleep(100000);
	}
	
	font->Release(font);
	font_s->Release(font_s);
}

 void EndRender()
 {
    mPrimarySurface->Flip(mPrimarySurface, NULL, (DFBSurfaceFlipFlags)0);
 }

//.........这里部分代码省略.........
     dest->GetPixelFormat( dest, &desc.pixelformat );

     D_INFO( "DFBTest/PreAlloc: Destination is %dx%d using %s\n",
             desc.width, desc.height, dfb_pixelformat_name(desc.pixelformat) );

     /* Create a preallocated surface. */
     desc.flags                 = DSDESC_WIDTH | DSDESC_HEIGHT | DSDESC_PIXELFORMAT | DSDESC_CAPS | DSDESC_PREALLOCATED;
     desc.width                 = 100;
     desc.height                = 100;
     desc.pixelformat           = DSPF_ARGB;
     desc.caps                  = static_caps;
     desc.preallocated[0].data  = pixel_buffer;
     desc.preallocated[0].pitch = 100 * 4;

     ret = dfb->CreateSurface( dfb, &desc, &source );
     if (ret) {
          D_DERROR( ret, "DFBTest/PreAlloc: IDirectFB::CreateSurface() for the preallocated source failed!\n" );
          goto out;
     }

     /* Before any other operation the pixel data can be written to without locking */
     gen_pixels( pixel_buffer, 100 * 4, 100 );

     while (!quit) {
          void *ptr;
          int   pitch;


          /* Lock source surface for writing before making updates to the pixel buffer */
          source->Lock( source, DSLF_WRITE, &ptr, &pitch );

          if (ptr == pixel_buffer)
               D_INFO( "DFBTest/PreAlloc: Locking preallocated source gave original preallocated pixel buffer :-)\n" );
          else {
               if (static_caps)
                    D_INFO( "DFBTest/PreAlloc: Locking preallocated source gave different pixel buffer, ERROR with static alloc!\n" );
               else
                    D_INFO( "DFBTest/PreAlloc: Locking preallocated source gave different pixel buffer, but OK (no static alloc)\n" );
          }

          update_pixels( ptr, pitch, 100 );

          /* Unlock source surface after writing, before making further Blits,
             to have the buffer be transfered to master again */
          source->Unlock( source );


          dest->Clear( dest, 0, 0, 0, 0xff );

          /* First Blit from preallocated source, data will be transfered to master */
          dest->Blit( dest, source, NULL, 50, 50 );

          /* Second Blit from preallocated source, data is already master */
          dest->Blit( dest, source, NULL, 150, 150 );

          dest->Flip( dest, NULL, DSFLIP_NONE );

          /* This will upload again the preallocated buffer to the master, where it is
             modified and outdates the preallocated buffer. Now it depends on the static
             alloc flag whether the next Lock will directly go into the shared memory
             allocation or the preallocated buffer again (with a transfer back from master
             to us). */
          source->FillRectangle( source, 0, 0, 10, 10 );

          /* Process keybuffer */
          while (keybuffer->GetEvent( keybuffer, DFB_EVENT(&evt)) == DFB_OK)
          {
              if (evt.type == DIET_KEYPRESS) {
                  switch (DFB_LOWER_CASE(evt.key_symbol)) {
                      case DIKS_ESCAPE:
                      case DIKS_SMALL_Q:
                      case DIKS_BACK:
                      case DIKS_STOP:
                      case DIKS_EXIT:
                          /* Quit main loop & test thread */
                          quit = true;
                          break;
                      default:
                          break;
                  }
              }
          }
          if (!quit)
          sleep( 5 );
     }

out:
     if (source)
          source->Release( source );

     if (dest)
          dest->Release( dest );

     keybuffer->Release( keybuffer );

     /* Shutdown DirectFB. */
     dfb->Release( dfb );

     return ret;
}

//.........这里部分代码省略.........
            //  We want to create an Image Provider tied to a directfb data buffer.
            //  DirectFB will find (or not) an Image Provider for the data type
            //  depending on Image Providers probe method (sniffing data headers)
            DFBCHECK (databuffer->CreateImageProvider (databuffer, &provider));
        }
        else {
#       ifdef   USE_PACKET_BUILDER_ONLY
            DFBFAIL(rle_build_databuffer_err);
#       else
            //  We could also create an Image Provider by passing a filename.
            //  DirectFB will find (or not) an Image Provider matching the file type.
            DFBCHECK (dfb->CreateImageProvider (dfb, filename, &provider));
#       endif
        }



        //    Get a surface description from the provider. It will contain the width,
        //    height, bits per pixel and the flag for an alphachannel if the image
        //    has one. If the image has no alphachannel the bits per pixel is set to
        //    the bits per pixel of the primary layer to use simple blitting without
        //    pixel format conversion.
        DFBCHECK (provider->GetSurfaceDescription (provider, &surface_dsc));

        //    Create a surface based on the description of the provider.
        DFBCHECK (dfb->CreateSurface( dfb, &surface_dsc, &logo ));

        //    Let the provider render to our surface. Image providers are supposed
        //    to support every destination pixel format and size. If the size
        //    differs the image will be scaled (bilinear). The last parameter allows
        //    to specify an optional destination rectangle. We use NULL here so that
        //    our image covers the whole logo surface.
        DFBCHECK (provider->RenderTo (provider, logo, NULL));
        //    Note: RLE Image Provider allows for direct non-scaled LUT-8 surface
        //          rendering without any attached colormap.

        #ifdef CLEVER_APPROACH
        //    Let's setup our logo surface palette outside of the RLE Image
        //    Provider if we got a colormap from rle_build_databuffer ...
        if (color_palette)
        {
            IDirectFBPalette *palette;
            DFBCHECK (logo->GetPalette (logo, &palette));
            palette->SetEntries (palette, color_palette, number_of_colors, 0);
            palette->Release (palette);
        }
        #endif

        //
        //  --- WE GET RID OF OUR IMAGE PROVIDER INSTANCE HERE
        //
        //    Release the provider, we don't need it anymore.
        provider->Release (provider);           provider    = NULL;
        //    Destroy the databuffer as well, we don't need it anymore.
        rle_destroy_databuffer (databuffer);    databuffer  = NULL;


#   ifndef SUBTITLES_MODE
        //    We want to let the logo slide in on the left and slide out on the
        //    right.
        for (i = -surface_dsc.width; i < screen_width; i++)
#   else
        //    We want to let the logo slide in on the right and slide out on the
        //    left.
        for (i = screen_width-1; i >= -surface_dsc.width; i--)
#   endif
        {
            //    Clear the screen.
            DFBCHECK (primary->FillRectangle (primary, 0, 0,
                                              screen_width, screen_height));

            //    Blit the logo vertically centered with "i" as the X coordinate.
            //    NULL means that we want to blit the whole surface.
            DFBCHECK (primary->Blit (primary, logo, NULL, i,
                                     (screen_height - surface_dsc.height) / 2));

            //    Flip the front and back buffer, but wait for the vertical
            //    retrace to avoid tearing.
            DFBCHECK (primary->Flip (primary, NULL, DSFLIP_WAITFORSYNC));

            if (argc < 3)
            {
                usleep(1000*5);
            }
        }

        //    Release the image.
        if (logo)
        {
            logo->Release (logo);
        }

   }

   //    Release everything else
   primary->Release (primary);
   dfb->Release (dfb);

   return 0;
}