Fix crash when trying to convert from or to RGBi (i<15) as in bgr8torgb24

Originally committed as revision 22910 to svn://svn.mplayerhq.hu/mplayer/trunk/libswscale

diff --git a/libswscale/swscale.c b/libswscale/swscale.c
index f6a23425bf59d5cb9548f89d78d507a91d256bf8..54924b0eeff8f1fcb88243b395e02c3435a6ad99 100644 (file)
--- a/libswscale/swscale.c
+++ b/libswscale/swscale.c
@@ -2086,6 +2086,13 @@ SwsContext *sws_getContext(int srcW, int srcH, int srcFormat, int dstW, int dstH
                /* rgb/bgr -> rgb/bgr (no dither needed forms) */
                if(   (isBGR(srcFormat) || isRGB(srcFormat))
                   && (isBGR(dstFormat) || isRGB(dstFormat)) 
+                  && srcFormat != PIX_FMT_BGR8 && dstFormat != PIX_FMT_BGR8
+                  && srcFormat != PIX_FMT_RGB8 && dstFormat != PIX_FMT_RGB8
+                  && srcFormat != PIX_FMT_BGR4 && dstFormat != PIX_FMT_BGR4
+                  && srcFormat != PIX_FMT_RGB4 && dstFormat != PIX_FMT_RGB4
+                  && srcFormat != PIX_FMT_BGR4_BYTE && dstFormat != PIX_FMT_BGR4_BYTE
+                  && srcFormat != PIX_FMT_RGB4_BYTE && dstFormat != PIX_FMT_RGB4_BYTE
+                  && srcFormat != PIX_FMT_MONOBLACK && dstFormat != PIX_FMT_MONOBLACK
                   && !needsDither)
                        c->swScale= rgb2rgbWrapper;