/**
*
* @return the mb_type
*/
int ff_mpeg4_set_direct_mv(MpegEncContext *s, int mx, int my){
const int mb_index= s->mb_x + s->mb_y*s->mb_stride;
const int colocated_mb_type= s->next_picture.mb_type[mb_index];
uint16_t time_pp;
uint16_t time_pb;
int i;
//FIXME avoid divides
// try special case with shifts for 1 and 3 B-frames?
if(IS_8X8(colocated_mb_type)){
s->mv_type = MV_TYPE_8X8;
for(i=0; i<4; i++){
ff_mpeg4_set_one_direct_mv(s, mx, my, i);
}
return MB_TYPE_DIRECT2 | MB_TYPE_8x8 | MB_TYPE_L0L1;
} else if(IS_INTERLACED(colocated_mb_type)){
s->mv_type = MV_TYPE_FIELD;
for(i=0; i<2; i++){
int field_select= s->next_picture.ref_index[0][4*mb_index + 2*i];
s->field_select[0][i]= field_select;
s->field_select[1][i]= i;
if(s->top_field_first){
time_pp= s->pp_field_time - field_select + i;
time_pb= s->pb_field_time - field_select + i;
}else{
time_pp= s->pp_field_time + field_select - i;
time_pb= s->pb_field_time + field_select - i;
}
// NARFLEX: SageTV Fix divide by zero errors that can happen here
s->mv[0][i][0] = (time_pp == 0) ? 0 : (s->p_field_mv_table[i][0][mb_index][0]*time_pb/time_pp + mx);
s->mv[0][i][1] = (time_pp == 0) ? 0 : (s->p_field_mv_table[i][0][mb_index][1]*time_pb/time_pp + my);
s->mv[1][i][0] = mx ? s->mv[0][i][0] - s->p_field_mv_table[i][0][mb_index][0]
: ((time_pp == 0) ? 0 : (s->p_field_mv_table[i][0][mb_index][0]*(time_pb - time_pp)/time_pp));
s->mv[1][i][1] = my ? s->mv[0][i][1] - s->p_field_mv_table[i][0][mb_index][1]
: ((time_pp == 0) ? 0 : (s->p_field_mv_table[i][0][mb_index][1]*(time_pb - time_pp)/time_pp));
}
return MB_TYPE_DIRECT2 | MB_TYPE_16x8 | MB_TYPE_L0L1 | MB_TYPE_INTERLACED;
}else{
ff_mpeg4_set_one_direct_mv(s, mx, my, 0);
s->mv[0][1][0] = s->mv[0][2][0] = s->mv[0][3][0] = s->mv[0][0][0];
s->mv[0][1][1] = s->mv[0][2][1] = s->mv[0][3][1] = s->mv[0][0][1];
s->mv[1][1][0] = s->mv[1][2][0] = s->mv[1][3][0] = s->mv[1][0][0];
s->mv[1][1][1] = s->mv[1][2][1] = s->mv[1][3][1] = s->mv[1][0][1];
if((s->avctx->workaround_bugs & FF_BUG_DIRECT_BLOCKSIZE) || !s->quarter_sample)
s->mv_type= MV_TYPE_16X16;
else
s->mv_type= MV_TYPE_8X8;
return MB_TYPE_DIRECT2 | MB_TYPE_16x16 | MB_TYPE_L0L1; //Note see prev line
}
}
static void pred_spatial_direct_motion(H264Context * const h, int *mb_type){
MpegEncContext * const s = &h->s;
int b8_stride = 2;
int b4_stride = h->b_stride;
int mb_xy = h->mb_xy, mb_y = s->mb_y;
int mb_type_col[2];
const int16_t (*l1mv0)[2], (*l1mv1)[2];
const int8_t *l1ref0, *l1ref1;
const int is_b8x8 = IS_8X8(*mb_type);
unsigned int sub_mb_type= MB_TYPE_L0L1;
int i8, i4;
int ref[2];
int mv[2];
int list;
assert(h->ref_list[1][0].f.reference & 3);
await_reference_mb_row(h, &h->ref_list[1][0], s->mb_y + !!IS_INTERLACED(*mb_type));
#define MB_TYPE_16x16_OR_INTRA (MB_TYPE_16x16|MB_TYPE_INTRA4x4|MB_TYPE_INTRA16x16|MB_TYPE_INTRA_PCM)
/* ref = min(neighbors) */
for(list=0; list<2; list++){
int left_ref = h->ref_cache[list][scan8[0] - 1];
int top_ref = h->ref_cache[list][scan8[0] - 8];
int refc = h->ref_cache[list][scan8[0] - 8 + 4];
const int16_t *C= h->mv_cache[list][ scan8[0] - 8 + 4];
if(refc == PART_NOT_AVAILABLE){
refc = h->ref_cache[list][scan8[0] - 8 - 1];
C = h-> mv_cache[list][scan8[0] - 8 - 1];
}
ref[list] = FFMIN3((unsigned)left_ref, (unsigned)top_ref, (unsigned)refc);
if(ref[list] >= 0){
//this is just pred_motion() but with the cases removed that cannot happen for direct blocks
const int16_t * const A= h->mv_cache[list][ scan8[0] - 1 ];
const int16_t * const B= h->mv_cache[list][ scan8[0] - 8 ];
int match_count= (left_ref==ref[list]) + (top_ref==ref[list]) + (refc==ref[list]);
if(match_count > 1){ //most common
mv[list]= pack16to32(mid_pred(A[0], B[0], C[0]),
mid_pred(A[1], B[1], C[1]) );
}else {
assert(match_count==1);
if(left_ref==ref[list]){
mv[list]= AV_RN32A(A);
}else if(top_ref==ref[list]){
mv[list]= AV_RN32A(B);
}else{
mv[list]= AV_RN32A(C);
}
}
}else{
int mask= ~(MB_TYPE_L0 << (2*list));
mv[list] = 0;
ref[list] = -1;
if(!is_b8x8)
*mb_type &= mask;
sub_mb_type &= mask;
}
}
if(ref[0] < 0 && ref[1] < 0){
ref[0] = ref[1] = 0;
if(!is_b8x8)
*mb_type |= MB_TYPE_L0L1;
sub_mb_type |= MB_TYPE_L0L1;
}
if(!(is_b8x8|mv[0]|mv[1])){
fill_rectangle(&h->ref_cache[0][scan8[0]], 4, 4, 8, (uint8_t)ref[0], 1);
fill_rectangle(&h->ref_cache[1][scan8[0]], 4, 4, 8, (uint8_t)ref[1], 1);
fill_rectangle(&h->mv_cache[0][scan8[0]], 4, 4, 8, 0, 4);
fill_rectangle(&h->mv_cache[1][scan8[0]], 4, 4, 8, 0, 4);
*mb_type= (*mb_type & ~(MB_TYPE_8x8|MB_TYPE_16x8|MB_TYPE_8x16|MB_TYPE_P1L0|MB_TYPE_P1L1))|MB_TYPE_16x16|MB_TYPE_DIRECT2;
return;
}
if (IS_INTERLACED(h->ref_list[1][0].f.mb_type[mb_xy])) { // AFL/AFR/FR/FL -> AFL/FL
if (!IS_INTERLACED(*mb_type)) { // AFR/FR -> AFL/FL
mb_y = (s->mb_y&~1) + h->col_parity;
mb_xy= s->mb_x + ((s->mb_y&~1) + h->col_parity)*s->mb_stride;
b8_stride = 0;
}else{
mb_y += h->col_fieldoff;
mb_xy += s->mb_stride*h->col_fieldoff; // non zero for FL -> FL & differ parity
}
goto single_col;
}else{ // AFL/AFR/FR/FL -> AFR/FR
if(IS_INTERLACED(*mb_type)){ // AFL /FL -> AFR/FR
mb_y = s->mb_y&~1;
mb_xy= s->mb_x + (s->mb_y&~1)*s->mb_stride;
mb_type_col[0] = h->ref_list[1][0].f.mb_type[mb_xy];
mb_type_col[1] = h->ref_list[1][0].f.mb_type[mb_xy + s->mb_stride];
b8_stride = 2+4*s->mb_stride;
b4_stride *= 6;
if (IS_INTERLACED(mb_type_col[0]) != IS_INTERLACED(mb_type_col[1])) {
mb_type_col[0] &= ~MB_TYPE_INTERLACED;
mb_type_col[1] &= ~MB_TYPE_INTERLACED;
}
sub_mb_type |= MB_TYPE_16x16|MB_TYPE_DIRECT2; /* B_SUB_8x8 */
if( (mb_type_col[0] & MB_TYPE_16x16_OR_INTRA)
&& (mb_type_col[1] & MB_TYPE_16x16_OR_INTRA)
&& !is_b8x8){
*mb_type |= MB_TYPE_16x8 |MB_TYPE_DIRECT2; /* B_16x8 */
}else{
*mb_type |= MB_TYPE_8x8;
}
}else{ // AFR/FR -> AFR/FR
single_col:
mb_type_col[0] =
mb_type_col[1] = h->ref_list[1][0].f.mb_type[mb_xy];
sub_mb_type |= MB_TYPE_16x16|MB_TYPE_DIRECT2; /* B_SUB_8x8 */
if(!is_b8x8 && (mb_type_col[0] & MB_TYPE_16x16_OR_INTRA)){
*mb_type |= MB_TYPE_16x16|MB_TYPE_DIRECT2; /* B_16x16 */
}else if(!is_b8x8 && (mb_type_col[0] & (MB_TYPE_16x8|MB_TYPE_8x16))){
*mb_type |= MB_TYPE_DIRECT2 | (mb_type_col[0] & (MB_TYPE_16x8|MB_TYPE_8x16));
}else{
if(!h->sps.direct_8x8_inference_flag){
/* FIXME save sub mb types from previous frames (or derive from MVs)
* so we know exactly what block size to use */
sub_mb_type += (MB_TYPE_8x8-MB_TYPE_16x16); /* B_SUB_4x4 */
}
*mb_type |= MB_TYPE_8x8;
}
}
}
await_reference_mb_row(h, &h->ref_list[1][0], mb_y);
l1mv0 = &h->ref_list[1][0].f.motion_val[0][h->mb2b_xy [mb_xy]];
l1mv1 = &h->ref_list[1][0].f.motion_val[1][h->mb2b_xy [mb_xy]];
l1ref0 = &h->ref_list[1][0].f.ref_index [0][4 * mb_xy];
l1ref1 = &h->ref_list[1][0].f.ref_index [1][4 * mb_xy];
if(!b8_stride){
if(s->mb_y&1){
l1ref0 += 2;
l1ref1 += 2;
l1mv0 += 2*b4_stride;
l1mv1 += 2*b4_stride;
}
}
if(IS_INTERLACED(*mb_type) != IS_INTERLACED(mb_type_col[0])){
int n=0;
for(i8=0; i8<4; i8++){
int x8 = i8&1;
int y8 = i8>>1;
int xy8 = x8+y8*b8_stride;
int xy4 = 3*x8+y8*b4_stride;
int a,b;
if(is_b8x8 && !IS_DIRECT(h->sub_mb_type[i8]))
continue;
h->sub_mb_type[i8] = sub_mb_type;
fill_rectangle(&h->ref_cache[0][scan8[i8*4]], 2, 2, 8, (uint8_t)ref[0], 1);
fill_rectangle(&h->ref_cache[1][scan8[i8*4]], 2, 2, 8, (uint8_t)ref[1], 1);
if(!IS_INTRA(mb_type_col[y8]) && !h->ref_list[1][0].long_ref
&& ( (l1ref0[xy8] == 0 && FFABS(l1mv0[xy4][0]) <= 1 && FFABS(l1mv0[xy4][1]) <= 1)
|| (l1ref0[xy8] < 0 && l1ref1[xy8] == 0 && FFABS(l1mv1[xy4][0]) <= 1 && FFABS(l1mv1[xy4][1]) <= 1))){
a=b=0;
if(ref[0] > 0)
a= mv[0];
if(ref[1] > 0)
b= mv[1];
n++;
}else{
a= mv[0];
b= mv[1];
}
fill_rectangle(&h->mv_cache[0][scan8[i8*4]], 2, 2, 8, a, 4);
fill_rectangle(&h->mv_cache[1][scan8[i8*4]], 2, 2, 8, b, 4);
}
if(!is_b8x8 && !(n&3))
*mb_type= (*mb_type & ~(MB_TYPE_8x8|MB_TYPE_16x8|MB_TYPE_8x16|MB_TYPE_P1L0|MB_TYPE_P1L1))|MB_TYPE_16x16|MB_TYPE_DIRECT2;
}else if(IS_16X16(*mb_type)){
void render_mbs()
{
H264Context *h = g_h;
GPUH264Context * const g = &h->gpu;
MpegEncContext * const s = &h->s;
H264mb* blockStore = g->block_buffer;
int i, l;
int lists = (h->slice_type==FF_B_TYPE)?2:1;
int dpb_pos = s->current_picture.gpu_dpb;
printf("Attempting to motion compensate %d blocks\n", (g->end-g->start+1));
glNewList(dispList, GL_COMPILE);
for(l=0; l < lists; l++)
{
glBegin(GL_QUADS);
for(i= g->start; i <= g->end; i++)
{
const int mb_x = blockStore[i].mb_x;
const int mb_y = blockStore[i].mb_y;
const int mb_xy = mb_x + mb_y*s->mb_stride;
const int mb_type = s->current_picture.mb_type[mb_xy];
int mv_x, mv_y, j;
//RUDD TODO ignoring Intra blocks for now
if(IS_INTER(mb_type))
{
if(IS_16X16(mb_type) && IS_DIR(mb_type, 0, l))
{
mv_x = blockStore[i].mv_cache[0][ scan8[0]][0];
mv_y = blockStore[i].mv_cache[0][ scan8[0]][1];
render_one_block(mb_x, mb_y, mv_x, mv_y, 16, 16, 0, 0,
h->ref_list[l][h->ref_cache[l][ scan8[0] ]].gpu_dpb, dpb_pos);
}
else if(IS_16X8(mb_type))
{
if(IS_DIR(mb_type, 0, l))
{
mv_x = blockStore[i].mv_cache[l][ scan8[0]][0];
mv_y = blockStore[i].mv_cache[l][ scan8[0]][1];
render_one_block(mb_x, mb_y, mv_x, mv_y, 16, 8, 0, 0,
h->ref_list[l][h->ref_cache[l][ scan8[0] ]].gpu_dpb, dpb_pos);
}
if(IS_DIR(mb_type, 1, l))
{
mv_x = blockStore[i].mv_cache[0][ scan8[8]][0];
mv_y = blockStore[i].mv_cache[0][ scan8[8]][1];
render_one_block(mb_x, mb_y, mv_x, mv_y, 16, 8, 0, -8,
h->ref_list[l][h->ref_cache[l][ scan8[8] ]].gpu_dpb, dpb_pos);
}
}
else if(IS_8X16(mb_type))
{
if(IS_DIR(mb_type, 0, l))
{
mv_x = blockStore[i].mv_cache[0][ scan8[0]][0];
mv_y = blockStore[i].mv_cache[0][ scan8[0]][1];
render_one_block(mb_x, mb_y, mv_x, mv_y, 8, 16, 0, 0,
h->ref_list[l][h->ref_cache[l][ scan8[0] ]].gpu_dpb, dpb_pos);
}
if(IS_DIR(mb_type, 1, l))
{
mv_x = blockStore[i].mv_cache[0][ scan8[4]][0];
mv_y = blockStore[i].mv_cache[0][ scan8[4]][1];
render_one_block(mb_x, mb_y, mv_x, mv_y, 8, 16, 8, 0,
h->ref_list[l][h->ref_cache[l][ scan8[4] ]].gpu_dpb, dpb_pos);
}
}
else
{
assert(IS_8X8(mb_type));
int j;
for(j=0;j<4;j++)
{
const int sub_mb_type= h->sub_mb_type[j];
const int n= 4*j;
int x_offset= (j&1);
int y_offset= (j&2)>>1;
if(!IS_DIR(sub_mb_type, 0, l))
continue;
if(IS_SUB_8X8(sub_mb_type))
{
mv_x = blockStore[i].mv_cache[0][ scan8[n]][0];
mv_y = blockStore[i].mv_cache[0][ scan8[n]][1];
render_one_block(mb_x, mb_y, mv_x, mv_y, 8, 8, 8*x_offset,-8*y_offset,
h->ref_list[l][h->ref_cache[l][ scan8[n] ]].gpu_dpb, dpb_pos);
}
else if(IS_SUB_8X4(sub_mb_type))
{
mv_x = blockStore[i].mv_cache[0][ scan8[n]][0];
mv_y = blockStore[i].mv_cache[0][ scan8[n]][1];
render_one_block(mb_x, mb_y, mv_x, mv_y, 8, 4, 8*x_offset,-8*y_offset,
h->ref_list[l][h->ref_cache[l][ scan8[n] ]].gpu_dpb, dpb_pos);
mv_x = blockStore[i].mv_cache[0][ scan8[n+2]][0];
mv_y = blockStore[i].mv_cache[0][ scan8[n+2]][1];
render_one_block(mb_x, mb_y, mv_x, mv_y, 8, 4, 8*x_offset,-8*y_offset-4,
h->ref_list[l][h->ref_cache[l][ scan8[n+2] ]].gpu_dpb, dpb_pos);
}
else if(IS_SUB_4X8(sub_mb_type))
{
mv_x = blockStore[i].mv_cache[0][ scan8[n]][0];
mv_y = blockStore[i].mv_cache[0][ scan8[n]][1];
render_one_block(mb_x, mb_y, mv_x, mv_y, 4, 8, 8*x_offset,-8*y_offset,
h->ref_list[l][h->ref_cache[l][ scan8[n] ]].gpu_dpb, dpb_pos);
mv_x = blockStore[i].mv_cache[0][ scan8[n+1]][0];
mv_y = blockStore[i].mv_cache[0][ scan8[n+1]][1];
render_one_block(mb_x, mb_y, mv_x, mv_y, 4, 8, 8*x_offset+4,-8*y_offset,
h->ref_list[l][h->ref_cache[l][ scan8[n+1] ]].gpu_dpb, dpb_pos);
}
else
{
mv_x = blockStore[i].mv_cache[0][ scan8[n]][0];
mv_y = blockStore[i].mv_cache[0][ scan8[n]][1];
render_one_block(mb_x, mb_y, mv_x, mv_y, 4, 4, 8*x_offset,-8*y_offset,
h->ref_list[l][h->ref_cache[l][ scan8[n] ]].gpu_dpb, dpb_pos);
mv_x = blockStore[i].mv_cache[0][ scan8[n+1]][0];
mv_y = blockStore[i].mv_cache[0][ scan8[n+1]][1];
render_one_block(mb_x, mb_y, mv_x, mv_y, 4, 4, 8*x_offset+4,-8*y_offset,
h->ref_list[l][h->ref_cache[l][ scan8[n+1] ]].gpu_dpb, dpb_pos);
mv_x = blockStore[i].mv_cache[0][ scan8[n+2]][0];
mv_y = blockStore[i].mv_cache[0][ scan8[n+2]][1];
render_one_block(mb_x, mb_y, mv_x, mv_y, 4, 4, 8*x_offset,-8*y_offset-4,
h->ref_list[l][h->ref_cache[l][ scan8[n+2] ]].gpu_dpb, dpb_pos);
mv_x = blockStore[i].mv_cache[0][ scan8[n+3]][0];
mv_y = blockStore[i].mv_cache[0][ scan8[n+3]][1];
render_one_block(mb_x, mb_y, mv_x, mv_y, 4, 4, 8*x_offset+4,-8*y_offset-4,
h->ref_list[l][h->ref_cache[l][ scan8[n+3] ]].gpu_dpb, dpb_pos);
}
}
}
}
}
}
glEnd();
glEndList();
}
static void MCFUNC(hl_motion)(const H264Context *h, H264SliceContext *sl,
uint8_t *dest_y,
uint8_t *dest_cb, uint8_t *dest_cr,
qpel_mc_func(*qpix_put)[16],
const h264_chroma_mc_func(*chroma_put),
qpel_mc_func(*qpix_avg)[16],
const h264_chroma_mc_func(*chroma_avg),
const h264_weight_func *weight_op,
const h264_biweight_func *weight_avg)
{
const int mb_xy = sl->mb_xy;
const int mb_type = h->cur_pic.mb_type[mb_xy];
av_assert2(IS_INTER(mb_type));
if (HAVE_THREADS && (h->avctx->active_thread_type & FF_THREAD_FRAME))
await_references(h, sl);
prefetch_motion(h, sl, 0, PIXEL_SHIFT, CHROMA_IDC);
if (IS_16X16(mb_type)) {
mc_part(h, sl, 0, 1, 16, 0, dest_y, dest_cb, dest_cr, 0, 0,
qpix_put[0], chroma_put[0], qpix_avg[0], chroma_avg[0],
weight_op, weight_avg,
IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1));
} else if (IS_16X8(mb_type)) {
mc_part(h, sl, 0, 0, 8, 8 << PIXEL_SHIFT, dest_y, dest_cb, dest_cr, 0, 0,
qpix_put[1], chroma_put[0], qpix_avg[1], chroma_avg[0],
weight_op, weight_avg,
IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1));
mc_part(h, sl, 8, 0, 8, 8 << PIXEL_SHIFT, dest_y, dest_cb, dest_cr, 0, 4,
qpix_put[1], chroma_put[0], qpix_avg[1], chroma_avg[0],
weight_op, weight_avg,
IS_DIR(mb_type, 1, 0), IS_DIR(mb_type, 1, 1));
} else if (IS_8X16(mb_type)) {
mc_part(h, sl, 0, 0, 16, 8 * sl->mb_linesize, dest_y, dest_cb, dest_cr, 0, 0,
qpix_put[1], chroma_put[1], qpix_avg[1], chroma_avg[1],
&weight_op[1], &weight_avg[1],
IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1));
mc_part(h, sl, 4, 0, 16, 8 * sl->mb_linesize, dest_y, dest_cb, dest_cr, 4, 0,
qpix_put[1], chroma_put[1], qpix_avg[1], chroma_avg[1],
&weight_op[1], &weight_avg[1],
IS_DIR(mb_type, 1, 0), IS_DIR(mb_type, 1, 1));
} else {
int i;
av_assert2(IS_8X8(mb_type));
for (i = 0; i < 4; i++) {
const int sub_mb_type = sl->sub_mb_type[i];
const int n = 4 * i;
int x_offset = (i & 1) << 2;
int y_offset = (i & 2) << 1;
if (IS_SUB_8X8(sub_mb_type)) {
mc_part(h, sl, n, 1, 8, 0, dest_y, dest_cb, dest_cr,
x_offset, y_offset,
qpix_put[1], chroma_put[1], qpix_avg[1], chroma_avg[1],
&weight_op[1], &weight_avg[1],
IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
} else if (IS_SUB_8X4(sub_mb_type)) {
mc_part(h, sl, n, 0, 4, 4 << PIXEL_SHIFT, dest_y, dest_cb, dest_cr,
x_offset, y_offset,
qpix_put[2], chroma_put[1], qpix_avg[2], chroma_avg[1],
&weight_op[1], &weight_avg[1],
IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
mc_part(h, sl, n + 2, 0, 4, 4 << PIXEL_SHIFT,
dest_y, dest_cb, dest_cr, x_offset, y_offset + 2,
qpix_put[2], chroma_put[1], qpix_avg[2], chroma_avg[1],
&weight_op[1], &weight_avg[1],
IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
} else if (IS_SUB_4X8(sub_mb_type)) {
mc_part(h, sl, n, 0, 8, 4 * sl->mb_linesize,
dest_y, dest_cb, dest_cr, x_offset, y_offset,
qpix_put[2], chroma_put[2], qpix_avg[2], chroma_avg[2],
&weight_op[2], &weight_avg[2],
IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
mc_part(h, sl, n + 1, 0, 8, 4 * sl->mb_linesize,
dest_y, dest_cb, dest_cr, x_offset + 2, y_offset,
qpix_put[2], chroma_put[2], qpix_avg[2], chroma_avg[2],
&weight_op[2], &weight_avg[2],
IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
} else {
int j;
av_assert2(IS_SUB_4X4(sub_mb_type));
for (j = 0; j < 4; j++) {
int sub_x_offset = x_offset + 2 * (j & 1);
int sub_y_offset = y_offset + (j & 2);
mc_part(h, sl, n + j, 1, 4, 0,
dest_y, dest_cb, dest_cr, sub_x_offset, sub_y_offset,
qpix_put[2], chroma_put[2], qpix_avg[2], chroma_avg[2],
&weight_op[2], &weight_avg[2],
IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1));
}
}
}
}
if (USES_LIST(mb_type, 1))
prefetch_motion(h, sl, 1, PIXEL_SHIFT, CHROMA_IDC);
}