lavfi/testsrc2: fix hang with very small sizes.

Move a subtraction to the other side of the equal to avoid overflows.
7 years ago · a8305b0ea3
parent 86c446ec61
commit a8305b0ea3
1 changed files with 2 additions and 2 deletions
--- a/libavfilter/vsrc_testsrc.c
+++ b/libavfilter/vsrc_testsrc.c
@ -857,8 +857,8 @@ static void test2_fill_picture(AVFilterContext *ctx, AVFrame *frame)
        uint8_t alpha[256];

        r = s->pts;
-        for (y = ymin; y < ymax - 15; y += 16) {
-            for (x = xmin; x < xmax - 15; x += 16) {
+        for (y = ymin; y + 15 < ymax; y += 16) {
+            for (x = xmin; x + 15 < xmax; x += 16) {
                if ((x ^ y) & 16)
                    continue;
                for (i = 0; i < 256; i++) {