More general fix for bug #189

The clipping is done at a higher level, and the low level functions are
passed clipped rectangles.  Drivers which don't support source clipping
have not been changed, so the image will be squished instead of clipped,
but at least they will no longer crash when the destination rect was out
of bounds.

--HG--
extra : convert_revision : svn%3Ac70aab31-4412-0410-b14c-859654838e24/trunk%401650

src/video/SDL_yuv.c

@@ -75,7 +75,55 @@ void SDL_UnlockYUVOverlay(SDL_Overlay *overlay)
 
 int SDL_DisplayYUVOverlay(SDL_Overlay *overlay, SDL_Rect *dstrect)
 {
-	return overlay->hwfuncs->Display(current_video, overlay, dstrect);
+	SDL_Rect src, dst;
+	int srcx, srcy, srcw, srch;
+	int dstx, dsty, dstw, dsth;
+
+	/* Clip the rectangle to the screen area */
+	srcx = 0;
+	srcy = 0;
+	srcw = overlay->w;
+	srch = overlay->h;
+	dstx = dstrect->x;
+	dsty = dstrect->y;
+	dstw = dstrect->w;
+	dsth = dstrect->h;
+	if ( dstx < 0 ) {
+		srcw += (dstx * overlay->w) / dstrect->w;
+		dstw += dstx;
+		srcx -= (dstx * overlay->w) / dstrect->w;
+		dstx = 0;
+	}
+	if ( (dstx+dstw) > current_video->screen->w ) {
+		int extra = (dstx+dstw - current_video->screen->w);
+		srcw -= (extra * overlay->w) / dstrect->w;
+		dstw -= extra;
+	}
+	if ( dsty < 0 ) {
+		srch += (dsty * overlay->h) / dstrect->h;
+		dsth += dsty;
+		srcy -= (dsty * overlay->h) / dstrect->h;
+		dsty = 0;
+	}
+	if ( (dsty+dsth) > current_video->screen->h ) {
+		int extra = (dsty+dsth - current_video->screen->h);
+		srch -= (extra * overlay->h) / dstrect->h;
+		dsth -= extra;
+	}
+	if ( srcw <= 0 || srch <= 0 ||
+	     srch <= 0 || dsth <= 0 ) {
+		return 0;
+	}
+	/* Ugh, I can't wait for SDL_Rect to be int values */
+	src.x = srcx;
+	src.y = srcy;
+	src.w = srcw;
+	src.h = srch;
+	dst.x = dstx;
+	dst.y = dsty;
+	dst.w = dstw;
+	dst.h = dsth;
+	return overlay->hwfuncs->Display(current_video, overlay, &src, &dst);
 }
 
 void SDL_FreeYUVOverlay(SDL_Overlay *overlay)

src/video/SDL_yuv_sw.c

@@ -1164,43 +1164,44 @@ void SDL_UnlockYUV_SW(_THIS, SDL_Overlay *overlay)
 	return;
 }
 
-int SDL_DisplayYUV_SW(_THIS, SDL_Overlay *overlay, SDL_Rect *dstrect)
+int SDL_DisplayYUV_SW(_THIS, SDL_Overlay *overlay, SDL_Rect *src, SDL_Rect *dst)
 {
 	struct private_yuvhwdata *swdata;
-	SDL_Surface *stretch;
-	SDL_Surface *display;
+	int stretch;
 	int scale_2x;
+	SDL_Surface *display;
 	Uint8 *lum, *Cr, *Cb;
-	Uint8 *dst;
+	Uint8 *dstp;
 	int mod;
 
 	swdata = overlay->hwdata;
-	scale_2x = 0;
 	stretch = 0;
-	if ( (overlay->w != dstrect->w) || (overlay->h != dstrect->h) ) {
-		if ( (dstrect->w == 2*overlay->w) &&
-		     (dstrect->h == 2*overlay->h) ) {
+	scale_2x = 0;
+	if ( src->x || src->y || src->w < overlay->w || src->h < overlay->h ) {
+		stretch = 1;
+	} else if ( (src->w != dst->w) || (src->h != dst->h) ) {
+		if ( (dst->w == 2*src->w) &&
+		     (dst->h == 2*src->h) ) {
 			scale_2x = 1;
 		} else {
-			if ( ! swdata->stretch ) {
-				display = swdata->display;
-				swdata->stretch = SDL_CreateRGBSurface(
-					SDL_SWSURFACE,
-					overlay->w, overlay->h,
-					display->format->BitsPerPixel,
-					display->format->Rmask,
-					display->format->Gmask,
-					display->format->Bmask, 0);
-				if ( ! swdata->stretch ) {
-					return(-1);
-				}
-			}
-			stretch = swdata->stretch;
+			stretch = 1;
 		}
 	}
-
 	if ( stretch ) {
-		display = stretch;
+		if ( ! swdata->stretch ) {
+			display = swdata->display;
+			swdata->stretch = SDL_CreateRGBSurface(
+				SDL_SWSURFACE,
+				overlay->w, overlay->h,
+				display->format->BitsPerPixel,
+				display->format->Rmask,
+				display->format->Gmask,
+				display->format->Bmask, 0);
+			if ( ! swdata->stretch ) {
+				return(-1);
+			}
+		}
+		display = swdata->stretch;
 	} else {
 		display = swdata->display;
 	}
@@ -1240,31 +1241,31 @@ int SDL_DisplayYUV_SW(_THIS, SDL_Overlay *overlay, SDL_Rect *dstrect)
 		}
 	}
 	if ( stretch ) {
-		dst = (Uint8 *)stretch->pixels;
+		dstp = (Uint8 *)swdata->stretch->pixels;
 	} else {
-		dst = (Uint8 *)display->pixels
-			+ dstrect->x * display->format->BytesPerPixel
-			+ dstrect->y * display->pitch;
+		dstp = (Uint8 *)display->pixels
+			+ dst->x * display->format->BytesPerPixel
+			+ dst->y * display->pitch;
 	}
 	mod = (display->pitch / display->format->BytesPerPixel);
 
 	if ( scale_2x ) {
 		mod -= (overlay->w * 2);
 		swdata->Display2X(swdata->colortab, swdata->rgb_2_pix,
-		                  lum, Cr, Cb, dst, overlay->h, overlay->w,mod);
+		                  lum, Cr, Cb, dstp, overlay->h, overlay->w, mod);
 	} else {
 		mod -= overlay->w;
 		swdata->Display1X(swdata->colortab, swdata->rgb_2_pix,
-		                  lum, Cr, Cb, dst, overlay->h, overlay->w,mod);
+		                  lum, Cr, Cb, dstp, overlay->h, overlay->w, mod);
 	}
 	if ( SDL_MUSTLOCK(display) ) {
 		SDL_UnlockSurface(display);
 	}
 	if ( stretch ) {
 		display = swdata->display;
-		SDL_SoftStretch(stretch, NULL, display, dstrect);
+		SDL_SoftStretch(swdata->stretch, src, display, dst);
 	}
-	SDL_UpdateRects(display, 1, dstrect);
+	SDL_UpdateRects(display, 1, dst);
 
 	return(0);
 }

src/video/SDL_yuv_sw_c.h

@@ -32,6 +32,6 @@ extern int SDL_LockYUV_SW(_THIS, SDL_Overlay *overlay);
 
 extern void SDL_UnlockYUV_SW(_THIS, SDL_Overlay *overlay);
 
-extern int SDL_DisplayYUV_SW(_THIS, SDL_Overlay *overlay, SDL_Rect *dstrect);
+extern int SDL_DisplayYUV_SW(_THIS, SDL_Overlay *overlay, SDL_Rect *src, SDL_Rect *dst);
 
 extern void SDL_FreeYUV_SW(_THIS, SDL_Overlay *overlay);

src/video/SDL_yuvfuncs.h

@@ -32,6 +32,6 @@
 struct private_yuvhwfuncs {
 	int (*Lock)(_THIS, SDL_Overlay *overlay);
 	void (*Unlock)(_THIS, SDL_Overlay *overlay);
-	int (*Display)(_THIS, SDL_Overlay *overlay, SDL_Rect *dstrect);
+	int (*Display)(_THIS, SDL_Overlay *overlay, SDL_Rect *src, SDL_Rect *dst);
 	void (*FreeHW)(_THIS, SDL_Overlay *overlay);
 };

src/video/bwindow/SDL_sysyuv.cc

@@ -263,7 +263,7 @@ void BE_UnlockYUVOverlay(_THIS, SDL_Overlay* overlay)
     overlay->hwdata->locked = 0;
 }
 
-int BE_DisplayYUVOverlay(_THIS, SDL_Overlay* overlay, SDL_Rect* dstrect)
+int BE_DisplayYUVOverlay(_THIS, SDL_Overlay* overlay, SDL_Rect* src, SDL_Rect *dst)
 {
     if ((overlay == NULL) || (overlay->hwdata==NULL)
         || (overlay->hwdata->bview==NULL) || (SDL_Win->View() == NULL))
@@ -277,11 +277,11 @@ int BE_DisplayYUVOverlay(_THIS, SDL_Overlay* overlay, SDL_Rect* dstrect)
     if (SDL_Win->IsFullScreen()) {
     	int left,top;
     	SDL_Win->GetXYOffset(left,top);
-	    bview->MoveTo(left+dstrect->x,top+dstrect->y);
+	    bview->MoveTo(left+dst->x,top+dst->y);
     } else {
-	    bview->MoveTo(dstrect->x,dstrect->y);
+	    bview->MoveTo(dst->x,dst->y);
     }
-    bview->ResizeTo(dstrect->w,dstrect->h);
+    bview->ResizeTo(dst->w,dst->h);
     bview->Flush();
 	if (overlay->hwdata->first_display) {
 		bview->Show();

src/video/bwindow/SDL_sysyuv.h

@@ -65,7 +65,7 @@ extern BBitmap * BE_GetOverlayBitmap(BRect bounds, color_space cs);
 extern SDL_Overlay* BE_CreateYUVOverlay(_THIS, int width, int height, Uint32 format, SDL_Surface* display);
 extern int BE_LockYUVOverlay(_THIS, SDL_Overlay* overlay);
 extern void BE_UnlockYUVOverlay(_THIS, SDL_Overlay* overlay);
-extern int BE_DisplayYUVOverlay(_THIS, SDL_Overlay* overlay, SDL_Rect* dstrect);
+extern int BE_DisplayYUVOverlay(_THIS, SDL_Overlay* overlay, SDL_Rect* src, SDL_Rect* dst);
 extern void BE_FreeYUVOverlay(_THIS, SDL_Overlay* overlay);
 
 };

src/video/directfb/SDL_DirectFB_yuv.c

@@ -241,7 +241,7 @@ void DirectFB_UnlockYUVOverlay(_THIS, SDL_Overlay *overlay)
   surface->Unlock (surface);
 }
 
-int DirectFB_DisplayYUVOverlay(_THIS, SDL_Overlay *overlay, SDL_Rect *dst)
+int DirectFB_DisplayYUVOverlay(_THIS, SDL_Overlay *overlay, SDL_Rect *src, SDL_Rect *dst)
 {
   DFBResult              ret;
   DFBDisplayLayerConfig  conf;

src/video/directfb/SDL_DirectFB_yuv.h

@@ -32,7 +32,7 @@ extern int DirectFB_LockYUVOverlay(_THIS, SDL_Overlay *overlay);
 
 extern void DirectFB_UnlockYUVOverlay(_THIS, SDL_Overlay *overlay);
 
-extern int DirectFB_DisplayYUVOverlay(_THIS, SDL_Overlay *overlay, SDL_Rect *dstrect);
+extern int DirectFB_DisplayYUVOverlay(_THIS, SDL_Overlay *overlay, SDL_Rect *src, SDL_Rect *dst);
 
 extern void DirectFB_FreeYUVOverlay(_THIS, SDL_Overlay *overlay);
 

src/video/photon/SDL_ph_events.c

@@ -245,15 +245,19 @@ static int ph_DispatchEvent(_THIS)
                    int lockedstate=current_overlay->hwdata->locked;
                    int chromastate=current_overlay->hwdata->ischromakey;
                    int error;
-                   SDL_Rect target;
+                   SDL_Rect src, dst;
 
                    current_overlay->hwdata->locked=1;
-                   target.x=current_overlay->hwdata->CurrentViewPort.pos.x;
-                   target.y=current_overlay->hwdata->CurrentViewPort.pos.y;
-                   target.w=current_overlay->hwdata->CurrentViewPort.size.w;
-                   target.h=current_overlay->hwdata->CurrentViewPort.size.h;
+                   src.x = 0;
+                   src.y = 0;
+                   src.w = current_overlay->w;
+                   src.y = current_overlay->h;
+                   dst.x=current_overlay->hwdata->CurrentViewPort.pos.x;
+                   dst.y=current_overlay->hwdata->CurrentViewPort.pos.y;
+                   dst.w=current_overlay->hwdata->CurrentViewPort.size.w;
+                   dst.h=current_overlay->hwdata->CurrentViewPort.size.h;
                    current_overlay->hwdata->ischromakey=0;
-                   error=ph_DisplayYUVOverlay(this, current_overlay, &target);
+                   error=ph_DisplayYUVOverlay(this, current_overlay, &src, &dst);
                    if (!error)
                    {
                        current_overlay->hwdata->ischromakey=chromastate;
@@ -306,15 +310,19 @@ static int ph_DispatchEvent(_THIS)
                     {
                         int lockedstate=current_overlay->hwdata->locked;
                         int error;
-                        SDL_Rect target;
+                        SDL_Rect src, dst;
 
                         current_overlay->hwdata->locked=1;
-                        target.x=current_overlay->hwdata->CurrentViewPort.pos.x;
-                        target.y=current_overlay->hwdata->CurrentViewPort.pos.y;
-                        target.w=current_overlay->hwdata->CurrentViewPort.size.w;
-                        target.h=current_overlay->hwdata->CurrentViewPort.size.h;
+                        src.x = 0;
+                        src.y = 0;
+                        src.w = current_overlay->w;
+                        src.y = current_overlay->h;
+                        dst.x=current_overlay->hwdata->CurrentViewPort.pos.x;
+                        dst.y=current_overlay->hwdata->CurrentViewPort.pos.y;
+                        dst.w=current_overlay->hwdata->CurrentViewPort.size.w;
+                        dst.h=current_overlay->hwdata->CurrentViewPort.size.h;
                         current_overlay->hwdata->forcedredraw=1;
-                        error=ph_DisplayYUVOverlay(this, current_overlay, &target);
+                        error=ph_DisplayYUVOverlay(this, current_overlay, &src, &dst);
                         if (!error)
                         {
                             current_overlay->hwdata->forcedredraw=0;

src/video/photon/SDL_phyuv.c

@@ -334,7 +334,7 @@ void ph_UnlockYUVOverlay(_THIS, SDL_Overlay* overlay)
     overlay->hwdata->locked = 0;
 }
 
-int ph_DisplayYUVOverlay(_THIS, SDL_Overlay* overlay, SDL_Rect* dstrect)
+int ph_DisplayYUVOverlay(_THIS, SDL_Overlay* overlay, SDL_Rect* src, SDL_Rect* dst)
 {
     int rtncode;
     PhPoint_t pos;
@@ -362,10 +362,10 @@ int ph_DisplayYUVOverlay(_THIS, SDL_Overlay* overlay, SDL_Rect* dstrect)
     }
 
     /* If CurrentViewPort position/size has been changed, then move/resize the viewport */
-    if ((overlay->hwdata->CurrentViewPort.pos.x != dstrect->x) ||
-        (overlay->hwdata->CurrentViewPort.pos.y != dstrect->y) ||
-        (overlay->hwdata->CurrentViewPort.size.w != dstrect->w) ||
-        (overlay->hwdata->CurrentViewPort.size.h != dstrect->h) ||
+    if ((overlay->hwdata->CurrentViewPort.pos.x != dst->x) ||
+        (overlay->hwdata->CurrentViewPort.pos.y != dst->y) ||
+        (overlay->hwdata->CurrentViewPort.size.w != dst->w) ||
+        (overlay->hwdata->CurrentViewPort.size.h != dst->h) ||
         (overlay->hwdata->scaler_on==0) || (winchanged==1) ||
         (overlay->hwdata->forcedredraw==1))
     {
@@ -381,7 +381,7 @@ int ph_DisplayYUVOverlay(_THIS, SDL_Overlay* overlay, SDL_Rect* dstrect)
 
             /* Draw the new rectangle of the chroma color at the viewport position */
             PgSetFillColor(overlay->hwdata->chromakey);
-            PgDrawIRect(dstrect->x, dstrect->y, dstrect->x+dstrect->w-1, dstrect->y+dstrect->h-1, Pg_DRAW_FILL);
+            PgDrawIRect(dst->x, dst->y, dst->x+dst->w-1, dst->y+dst->h-1, Pg_DRAW_FILL);
             PgFlush();
         }
 
@@ -389,13 +389,13 @@ int ph_DisplayYUVOverlay(_THIS, SDL_Overlay* overlay, SDL_Rect* dstrect)
         overlay->hwdata->scaler_on = 1;
 
         PhWindowQueryVisible(Ph_QUERY_CONSOLE, 0, PtWidgetRid(window), &windowextent);
-        overlay->hwdata->CurrentViewPort.pos.x = pos.x-windowextent.ul.x+dstrect->x;
-        overlay->hwdata->CurrentViewPort.pos.y = pos.y-windowextent.ul.y+dstrect->y;
-        overlay->hwdata->CurrentViewPort.size.w = dstrect->w;
-        overlay->hwdata->CurrentViewPort.size.h = dstrect->h;
+        overlay->hwdata->CurrentViewPort.pos.x = pos.x-windowextent.ul.x+dst->x;
+        overlay->hwdata->CurrentViewPort.pos.y = pos.y-windowextent.ul.y+dst->y;
+        overlay->hwdata->CurrentViewPort.size.w = dst->w;
+        overlay->hwdata->CurrentViewPort.size.h = dst->h;
         PhAreaToRect(&overlay->hwdata->CurrentViewPort, &overlay->hwdata->props.viewport);
-        overlay->hwdata->CurrentViewPort.pos.x = dstrect->x;
-        overlay->hwdata->CurrentViewPort.pos.y = dstrect->y;
+        overlay->hwdata->CurrentViewPort.pos.x = dst->x;
+        overlay->hwdata->CurrentViewPort.pos.y = dst->y;
 
         rtncode = PgConfigScalerChannel(overlay->hwdata->channel, &(overlay->hwdata->props));
 

src/video/photon/SDL_phyuv_c.h

@@ -56,7 +56,7 @@ struct private_yuvhwdata
 extern SDL_Overlay* ph_CreateYUVOverlay(_THIS, int width, int height, Uint32 format, SDL_Surface* display);
 extern int ph_LockYUVOverlay(_THIS, SDL_Overlay* overlay);
 extern void ph_UnlockYUVOverlay(_THIS, SDL_Overlay* overlay);
-extern int ph_DisplayYUVOverlay(_THIS, SDL_Overlay* overlay, SDL_Rect* dstrect);
+extern int ph_DisplayYUVOverlay(_THIS, SDL_Overlay* overlay, SDL_Rect* src, SDL_Rect* dst);
 extern void ph_FreeYUVOverlay(_THIS, SDL_Overlay* overlay);
 
 #endif /* __SDL_PH_YUV_H__ */

src/video/ps2gs/SDL_gsyuv.c

@@ -315,7 +315,7 @@ void GS_UnlockYUVOverlay(_THIS, SDL_Overlay *overlay)
 	return;
 }
 
-int GS_DisplayYUVOverlay(_THIS, SDL_Overlay *overlay, SDL_Rect *dstrect)
+int GS_DisplayYUVOverlay(_THIS, SDL_Overlay *overlay, SDL_Rect *src, SDL_Rect *dst)
 {
 	struct private_yuvhwdata *hwdata;
 	__u32 cmd;
@@ -423,8 +423,8 @@ int GS_DisplayYUVOverlay(_THIS, SDL_Overlay *overlay, SDL_Rect *dstrect)
 
 	/* Send the current image to the screen and scale it */
 	screen = this->screen;
-	x = (unsigned int)dstrect->x;
-	y = (unsigned int)dstrect->y;
+	x = (unsigned int)dst->x;
+	y = (unsigned int)dst->y;
 	if ( screen->offset ) {
 		x += (screen->offset % screen->pitch) /
 		     screen->format->BytesPerPixel;
@@ -432,8 +432,8 @@ int GS_DisplayYUVOverlay(_THIS, SDL_Overlay *overlay, SDL_Rect *dstrect)
 	}
 	y += screen_image.y;
 	*hwdata->stretch_x1y1 = (x * 16) + ((y * 16) << 16);
-	x += (unsigned int)dstrect->w;
-	y += (unsigned int)dstrect->h;
+	x += (unsigned int)dst->w;
+	y += (unsigned int)dst->h;
 	*hwdata->stretch_x2y2 = (x * 16) + ((y * 16) << 16);
 	return ioctl(console_fd, PS2IOC_SENDL, &hwdata->plist);
 }

src/video/ps2gs/SDL_gsyuv_c.h

@@ -32,6 +32,6 @@ extern int GS_LockYUVOverlay(_THIS, SDL_Overlay *overlay);
 
 extern void GS_UnlockYUVOverlay(_THIS, SDL_Overlay *overlay);
 
-extern int GS_DisplayYUVOverlay(_THIS, SDL_Overlay *overlay, SDL_Rect *dstrect);
+extern int GS_DisplayYUVOverlay(_THIS, SDL_Overlay *overlay, SDL_Rect *src, SDL_Rect *dst);
 
 extern void GS_FreeYUVOverlay(_THIS, SDL_Overlay *overlay);

src/video/windx5/SDL_dx5yuv.c

@@ -247,30 +247,30 @@ void DX5_UnlockYUVOverlay(_THIS, SDL_Overlay *overlay)
 	IDirectDrawSurface3_Unlock(surface, NULL);
 }
 
-int DX5_DisplayYUVOverlay(_THIS, SDL_Overlay *overlay, SDL_Rect *dstrect)
+int DX5_DisplayYUVOverlay(_THIS, SDL_Overlay *overlay, SDL_Rect *src, SDL_Rect *dst)
 {
 	HRESULT result;
 	LPDIRECTDRAWSURFACE3 surface;
-	RECT src, dst;
+	RECT srcrect, dstrect;
 
 	surface = overlay->hwdata->surface;
-	src.top = 0;
-	src.bottom = overlay->h;
-	src.left = 0;
-	src.right = overlay->w;
-	dst.top = SDL_bounds.top+dstrect->y;
-	dst.left = SDL_bounds.left+dstrect->x;
-	dst.bottom = dst.top+dstrect->h;
-	dst.right = dst.left+dstrect->w;
+	srcrect.top = src->y;
+	srcrect.bottom = srcrect.top+src->h;
+	srcrect.left = src->x;
+	srcrect.right = srcrect.left+src->w;
+	dstrect.top = SDL_bounds.top+dst->y;
+	dstrect.left = SDL_bounds.left+dst->x;
+	dstrect.bottom = dstrect.top+dst->h;
+	dstrect.right = dstrect.left+dst->w;
 #ifdef USE_DIRECTX_OVERLAY
-	result = IDirectDrawSurface3_UpdateOverlay(surface, &src,
-				SDL_primary, &dst, DDOVER_SHOW, NULL);
+	result = IDirectDrawSurface3_UpdateOverlay(surface, &srcrect,
+				SDL_primary, &dstrect, DDOVER_SHOW, NULL);
 	if ( result != DD_OK ) {
 		SetDDerror("DirectDrawSurface3::UpdateOverlay", result);
 		return(-1);
 	}
 #else
-	result = IDirectDrawSurface3_Blt(SDL_primary, &dst, surface, &src,
+	result = IDirectDrawSurface3_Blt(SDL_primary, &dstrect, surface, &srcrect,
 							DDBLT_WAIT, NULL);
 	if ( result != DD_OK ) {
 		SetDDerror("DirectDrawSurface3::Blt", result);

src/video/windx5/SDL_dx5yuv_c.h

@@ -33,6 +33,6 @@ extern int DX5_LockYUVOverlay(_THIS, SDL_Overlay *overlay);
 
 extern void DX5_UnlockYUVOverlay(_THIS, SDL_Overlay *overlay);
 
-extern int DX5_DisplayYUVOverlay(_THIS, SDL_Overlay *overlay, SDL_Rect *dstrect);
+extern int DX5_DisplayYUVOverlay(_THIS, SDL_Overlay *overlay, SDL_Rect *src, SDL_Rect *dst);
 
 extern void DX5_FreeYUVOverlay(_THIS, SDL_Overlay *overlay);

src/video/x11/SDL_x11yuv.c

@@ -354,62 +354,26 @@ void X11_UnlockYUVOverlay(_THIS, SDL_Overlay *overlay)
 	return;
 }
 
-int X11_DisplayYUVOverlay(_THIS, SDL_Overlay *overlay, SDL_Rect *dstrect)
+int X11_DisplayYUVOverlay(_THIS, SDL_Overlay *overlay, SDL_Rect *src, SDL_Rect *dst)
 {
 	struct private_yuvhwdata *hwdata;
-	int srcx, srcy, srcw, srch;
-	int dstx, dsty, dstw, dsth;
 
 	hwdata = overlay->hwdata;
 
-	/* Clip the rectangle to the screen area */
-	srcx = 0;
-	srcy = 0;
-	srcw = overlay->w;
-	srch = overlay->h;
-	dstx = dstrect->x;
-	dsty = dstrect->y;
-	dstw = dstrect->w;
-	dsth = dstrect->h;
-	if ( dstx < 0 ) {
-		srcw += (dstx * overlay->w) / dstrect->w;
-		dstw += dstx;
-		srcx -= (dstx * overlay->w) / dstrect->w;
-		dstx = 0;
-	}
-	if ( (dstx+dstw) > this->screen->w ) {
-		int extra = (dstx+dstw - this->screen->w);
-		srcw -= (extra * overlay->w) / dstrect->w;
-		dstw -= extra;
-	}
-	if ( dsty < 0 ) {
-		srch += (dsty * overlay->h) / dstrect->h;
-		dsth += dsty;
-		srcy -= (dsty * overlay->h) / dstrect->h;
-		dsty = 0;
-	}
-	if ( (dsty+dsth) > this->screen->h ) {
-		int extra = (dsty+dsth - this->screen->h);
-		srch -= (extra * overlay->h) / dstrect->h;
-		dsth -= extra;
-	}
-	if ( srcw <= 0 || srch <= 0 ||
-	     srch <= 0 || dsth <= 0 ) {
-		return;
-	}
-
 #ifndef NO_SHARED_MEMORY
 	if ( hwdata->yuv_use_mitshm ) {
 		SDL_NAME(XvShmPutImage)(GFX_Display, hwdata->port, SDL_Window, SDL_GC,
 	              hwdata->image,
-		      srcx, srcy, srcw, srch, dstx, dsty, dstw, dsth, False);
+		      src->x, src->y, src->w, src->h,
+		      dst->x, dst->y, dst->w, dst->h, False);
 	}
 	else
 #endif
 	{
 		SDL_NAME(XvPutImage)(GFX_Display, hwdata->port, SDL_Window, SDL_GC,
 				     hwdata->image,
-		                     srcx, srcy, srcw, srch, dstx, dsty, dstw, dsth);
+		                     src->x, src->y, src->w, src->h,
+		                     dst->x, dst->y, dst->w, dst->h);
 	}
 	XSync(GFX_Display, False);
 	return(0);

src/video/x11/SDL_x11yuv_c.h

@@ -34,7 +34,7 @@ extern int X11_LockYUVOverlay(_THIS, SDL_Overlay *overlay);
 
 extern void X11_UnlockYUVOverlay(_THIS, SDL_Overlay *overlay);
 
-extern int X11_DisplayYUVOverlay(_THIS, SDL_Overlay *overlay, SDL_Rect *dstrect);
+extern int X11_DisplayYUVOverlay(_THIS, SDL_Overlay *overlay, SDL_Rect *src, SDL_Rect *dst);
 
 extern void X11_FreeYUVOverlay(_THIS, SDL_Overlay *overlay);