*/
/**
- * @file libavcodec/h264_direct.c
+ * @file
* H.264 / AVC / MPEG4 part10 direct mb/block decoding.
* @author Michael Niedermayer <michaelni@gmx.at>
*/
static void pred_spatial_direct_motion(H264Context * const h, int *mb_type){
MpegEncContext * const s = &h->s;
- int b8_stride = h->b8_stride;
+ int b8_stride = 2;
int b4_stride = h->b_stride;
int mb_xy = h->mb_xy;
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;
+ 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].reference&3);
#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].mb_type[mb_xy])){ // AFL/AFR/FR/FL -> AFL/FL
if(!IS_INTERLACED(*mb_type)){ // AFR/FR -> AFL/FL
mb_xy= s->mb_x + ((s->mb_y&~1) + h->col_parity)*s->mb_stride;
mb_xy= s->mb_x + (s->mb_y&~1)*s->mb_stride;
mb_type_col[0] = h->ref_list[1][0].mb_type[mb_xy];
mb_type_col[1] = h->ref_list[1][0].mb_type[mb_xy + s->mb_stride];
- b8_stride *= 3;
+ b8_stride = 2+4*s->mb_stride;
b4_stride *= 6;
- sub_mb_type = MB_TYPE_16x16|MB_TYPE_P0L0|MB_TYPE_P0L1|MB_TYPE_DIRECT2; /* B_SUB_8x8 */
+ 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_L0L1|MB_TYPE_DIRECT2; /* B_16x8 */
+ *mb_type |= MB_TYPE_16x8 |MB_TYPE_DIRECT2; /* B_16x8 */
}else{
- *mb_type |= MB_TYPE_8x8|MB_TYPE_L0L1;
+ *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].mb_type[mb_xy];
- sub_mb_type = MB_TYPE_16x16|MB_TYPE_P0L0|MB_TYPE_P0L1|MB_TYPE_DIRECT2; /* B_SUB_8x8 */
+ 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_P0L0|MB_TYPE_P0L1|MB_TYPE_DIRECT2; /* B_16x16 */
+ *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_L0L1|MB_TYPE_DIRECT2 | (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_P0L0|MB_TYPE_P0L1|MB_TYPE_DIRECT2; /* B_SUB_4x4 */
+ sub_mb_type += (MB_TYPE_8x8-MB_TYPE_16x16); /* B_SUB_4x4 */
}
- *mb_type |= MB_TYPE_8x8|MB_TYPE_L0L1;
+ *mb_type |= MB_TYPE_8x8;
}
}
}
l1mv0 = &h->ref_list[1][0].motion_val[0][h->mb2b_xy [mb_xy]];
l1mv1 = &h->ref_list[1][0].motion_val[1][h->mb2b_xy [mb_xy]];
- l1ref0 = &h->ref_list[1][0].ref_index [0][h->mb2b8_xy[mb_xy]];
- l1ref1 = &h->ref_list[1][0].ref_index [1][h->mb2b8_xy[mb_xy]];
+ l1ref0 = &h->ref_list[1][0].ref_index [0][4*mb_xy];
+ l1ref1 = &h->ref_list[1][0].ref_index [1][4*mb_xy];
if(!b8_stride){
if(s->mb_y&1){
- l1ref0 += h->b8_stride;
- l1ref1 += h->b8_stride;
+ l1ref0 += 2;
+ l1ref1 += 2;
l1mv0 += 2*b4_stride;
l1mv1 += 2*b4_stride;
}
}
- {
- int ref[2];
- int mv[2];
- int list;
-
- /* 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]= (mid_pred(A[0], B[0], C[0])&0xFFFF)
- +(mid_pred(A[1], B[1], C[1])<<16);
- }else {
- assert(match_count==1);
- if(left_ref==ref[list]){
- mv[list]= *(uint32_t*)A;
- }else if(top_ref==ref[list]){
- mv[list]= *(uint32_t*)B;
- }else{
- mv[list]= *(uint32_t*)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]) == 0){
- 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;
- }else if(IS_INTERLACED(*mb_type) != IS_INTERLACED(mb_type_col[0])){
+ if(IS_INTERLACED(*mb_type) != IS_INTERLACED(mb_type_col[0])){
int n=0;
for(i8=0; i8<4; i8++){
int x8 = i8&1;
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);
+ assert(b8_stride==2);
/* col_zero_flag */
- if(!IS_INTRA(mb_type_col[0]) && !h->ref_list[1][0].long_ref && ( l1ref0[x8 + y8*b8_stride] == 0
- || (l1ref0[x8 + y8*b8_stride] < 0 && l1ref1[x8 + y8*b8_stride] == 0
+ if(!IS_INTRA(mb_type_col[0]) && !h->ref_list[1][0].long_ref && ( l1ref0[i8] == 0
+ || (l1ref0[i8] < 0 && l1ref1[i8] == 0
&& h->x264_build>33U))){
- const int16_t (*l1mv)[2]= l1ref0[x8 + y8*b8_stride] == 0 ? l1mv0 : l1mv1;
+ const int16_t (*l1mv)[2]= l1ref0[i8] == 0 ? l1mv0 : l1mv1;
if(IS_SUB_8X8(sub_mb_type)){
const int16_t *mv_col = l1mv[x8*3 + y8*3*b4_stride];
if(FFABS(mv_col[0]) <= 1 && FFABS(mv_col[1]) <= 1){
const int16_t *mv_col = l1mv[x8*2 + (i4&1) + (y8*2 + (i4>>1))*b4_stride];
if(FFABS(mv_col[0]) <= 1 && FFABS(mv_col[1]) <= 1){
if(ref[0] == 0)
- *(uint32_t*)h->mv_cache[0][scan8[i8*4+i4]] = 0;
+ AV_ZERO32(h->mv_cache[0][scan8[i8*4+i4]]);
if(ref[1] == 0)
- *(uint32_t*)h->mv_cache[1][scan8[i8*4+i4]] = 0;
+ AV_ZERO32(h->mv_cache[1][scan8[i8*4+i4]]);
m++;
}
}
if(!is_b8x8 && !(n&15))
*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;
}
- }
}
static void pred_temp_direct_motion(H264Context * const h, int *mb_type){
MpegEncContext * const s = &h->s;
- int b8_stride = h->b8_stride;
+ int b8_stride = 2;
int b4_stride = h->b_stride;
int mb_xy = h->mb_xy;
int mb_type_col[2];
mb_xy= s->mb_x + (s->mb_y&~1)*s->mb_stride;
mb_type_col[0] = h->ref_list[1][0].mb_type[mb_xy];
mb_type_col[1] = h->ref_list[1][0].mb_type[mb_xy + s->mb_stride];
- b8_stride *= 3;
+ b8_stride = 2+4*s->mb_stride;
b4_stride *= 6;
sub_mb_type = MB_TYPE_16x16|MB_TYPE_P0L0|MB_TYPE_P0L1|MB_TYPE_DIRECT2; /* B_SUB_8x8 */
l1mv0 = &h->ref_list[1][0].motion_val[0][h->mb2b_xy [mb_xy]];
l1mv1 = &h->ref_list[1][0].motion_val[1][h->mb2b_xy [mb_xy]];
- l1ref0 = &h->ref_list[1][0].ref_index [0][h->mb2b8_xy[mb_xy]];
- l1ref1 = &h->ref_list[1][0].ref_index [1][h->mb2b8_xy[mb_xy]];
+ l1ref0 = &h->ref_list[1][0].ref_index [0][4*mb_xy];
+ l1ref1 = &h->ref_list[1][0].ref_index [1][4*mb_xy];
if(!b8_stride){
if(s->mb_y&1){
- l1ref0 += h->b8_stride;
- l1ref1 += h->b8_stride;
+ l1ref0 += 2;
+ l1ref1 += 2;
l1mv0 += 2*b4_stride;
l1mv1 += 2*b4_stride;
}
continue;
}
- ref0 = l1ref0[x8 + y8*b8_stride];
+ assert(b8_stride == 2);
+ ref0 = l1ref0[i8];
if(ref0 >= 0)
ref0 = map_col_to_list0[0][ref0 + ref_offset];
else{
- ref0 = map_col_to_list0[1][l1ref1[x8 + y8*b8_stride] + ref_offset];
+ ref0 = map_col_to_list0[1][l1ref1[i8] + ref_offset];
l1mv= l1mv1;
}
scale = dist_scale_factor[ref0];
int16_t *mv_l0 = h->mv_cache[0][scan8[i8*4+i4]];
mv_l0[0] = (scale * mv_col[0] + 128) >> 8;
mv_l0[1] = (scale * mv_col[1] + 128) >> 8;
- *(uint32_t*)h->mv_cache[1][scan8[i8*4+i4]] =
- pack16to32(mv_l0[0]-mv_col[0],mv_l0[1]-mv_col[1]);
+ AV_WN32A(h->mv_cache[1][scan8[i8*4+i4]],
+ pack16to32(mv_l0[0]-mv_col[0],mv_l0[1]-mv_col[1]));
}
}
}