-void ff_rv34_idct_dc_add_mmx(uint8_t *dst, int stride, int dc);
-void ff_rv34_idct_dc_add_sse4(uint8_t *dst, int stride, int dc);
+void ff_rv34_idct_dc_add_mmx(uint8_t *dst, ptrdiff_t stride, int dc);
+void ff_rv34_idct_dc_add_sse4(uint8_t *dst, ptrdiff_t stride, int dc);