const uint16_t *quant_matrix, int bias, int qmin, int qmax, int intra);
void ff_init_block_index(MpegEncContext *s);
+void ff_copy_picture(Picture *dst, Picture *src);
static inline void ff_update_block_index(MpegEncContext *s){
const int block_size= 8>>s->avctx->lowres;