int width = FFMIN(avctx->width ,C64XRES);
uint8_t *src = p->data[0];
- for (blocky = 0; blocky < height; blocky += 8) {
+ for (blocky = 0; blocky < C64YRES; blocky += 8) {
for (blockx = 0; blockx < C64XRES; blockx += 8) {
- for (y = blocky; y < blocky+8 && y < height; y++) {
+ for (y = blocky; y < blocky+8 && y < C64YRES; y++) {
for (x = blockx; x < blockx+8 && x < C64XRES; x += 2) {
- if(x < width) {
+ if(x < width && y < height) {
/* build average over 2 pixels */
luma = (src[(x + 0 + y * p->linesize[0])] +
src[(x + 1 + y * p->linesize[0])]) / 2;