Oops. tjPlaneSizeYUV() should return -1 if componentID > 0 and subsamp==TJSAMP_GRAY.

git-svn-id: svn://svn.code.sf.net/p/libjpeg-turbo/code/trunk@1407 632fc199-4ca6-4c93-a231-07263d6284db

ChangeLog.txt

@@ -7,6 +7,9 @@ because OS X does not provide the le32toh() and htole32() functions.)
 [2] The non-SIMD RGB565 color conversion code did not work correctly on big
 endian machines.  This has been fixed.
 
+[3] Fixed an issue in tjPlaneSizeYUV() whereby it was erroneously returning 1
+instead of -1 if componentID was > 0 and subsamp was TJSAMP_GRAY.
+
 
 1.3.90 (1.4 beta1)
 ==================

turbojpeg.c

@@ -689,6 +689,7 @@ DLLEXPORT unsigned long DLLCALL tjPlaneSizeYUV(int componentID, int width,
 
 	pw=tjPlaneWidth(componentID, width, subsamp);
 	ph=tjPlaneHeight(componentID, height, subsamp);
+	if(pw<0 || ph<0) return -1;
 
 	if(stride==0) stride=pw;
 	else stride=abs(stride);