Ticket #277: avi_fcc_fix.diff

libmpdemux/demux_avi.c

@@ -81 +81 @@
 
 static int valid_fourcc(unsigned int id){
     unsigned char* fcc=(unsigned char*)(&id);
-#define FCC_CHR_CHECK(x) (x<48 || x>=96)
+#define FCC_CHR_CHECK(x) (x<'0' || (x>'9' && x<'A') || (x>'Z' && x<'a') || x>'z')
     if(FCC_CHR_CHECK(fcc[0])) return 0;
     if(FCC_CHR_CHECK(fcc[1])) return 0;
     if(FCC_CHR_CHECK(fcc[2])) return 0;