int width, int height, int linesize,
vp8_mc_func mc_func[3][3])
{
- static const uint8_t idx[8] = { 0, 1, 2, 1, 2, 1, 2, 1 };
- int mx = (mv->x << luma)&7, mx_idx = idx[mx];
- int my = (mv->y << luma)&7, my_idx = idx[my];
-
- x_off += mv->x >> (3 - luma);
- y_off += mv->y >> (3 - luma);
-
- // edge emulation
- src += y_off * linesize + x_off;
- if (x_off < 2 || x_off >= width - block_w - 3 ||
- y_off < 2 || y_off >= height - block_h - 3) {
- ff_emulated_edge_mc(s->edge_emu_buffer, src - 2 * linesize - 2, linesize,
- block_w + 5, block_h + 5,
- x_off - 2, y_off - 2, width, height);
- src = s->edge_emu_buffer + 2 + linesize * 2;
- }
-
- mc_func[my_idx][mx_idx](dst, linesize, src, linesize, block_h, mx, my);
+ if (AV_RN32A(mv)) {
+ static const uint8_t idx[8] = { 0, 1, 2, 1, 2, 1, 2, 1 };
+ int mx = (mv->x << luma)&7, mx_idx = idx[mx];
+ int my = (mv->y << luma)&7, my_idx = idx[my];
+
+ x_off += mv->x >> (3 - luma);
+ y_off += mv->y >> (3 - luma);
+
+ // edge emulation
+ src += y_off * linesize + x_off;
+ if (x_off < 2 || x_off >= width - block_w - 3 ||
+ y_off < 2 || y_off >= height - block_h - 3) {
+ ff_emulated_edge_mc(s->edge_emu_buffer, src - 2 * linesize - 2, linesize,
+ block_w + 5, block_h + 5,
+ x_off - 2, y_off - 2, width, height);
+ src = s->edge_emu_buffer + 2 + linesize * 2;
+ }
+ mc_func[my_idx][mx_idx](dst, linesize, src, linesize, block_h, mx, my);
+ } else
+ mc_func[0][0](dst, linesize, src + y_off * linesize + x_off, linesize, block_h, 0, 0);
}
static inline void vp8_mc_part(VP8Context *s, uint8_t *dst[3],