Split fill_caches() between loopfilter & decode, the 2 no longer where common
authorMichael Niedermayer <michaelni@gmx.at>
Tue, 26 Jan 2010 23:54:11 +0000 (23:54 +0000)
committerMichael Niedermayer <michaelni@gmx.at>
Tue, 26 Jan 2010 23:54:11 +0000 (23:54 +0000)
enough to justify the messy interleaving.

Originally committed as revision 21469 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavcodec/h264.h

index 52a19a0..2e6a6b9 100644 (file)
@@ -729,7 +729,7 @@ static inline int get_chroma_qp(H264Context *h, int t, int qscale){
 
 static inline void pred_pskip_motion(H264Context * const h, int * const mx, int * const my);
 
-static av_always_inline int fill_caches(H264Context *h, int mb_type, int for_deblock){
+static void fill_decode_caches(H264Context *h, int mb_type){
     MpegEncContext * const s = &h->s;
     const int mb_xy= h->mb_xy;
     int topleft_xy, top_xy, topright_xy, left_xy[2];
@@ -746,10 +746,6 @@ static av_always_inline int fill_caches(H264Context *h, int mb_type, int for_deb
 
     top_xy     = mb_xy  - (s->mb_stride << MB_FIELD);
 
-    //FIXME deblocking could skip the intra and nnz parts.
-//     if(for_deblock && (h->slice_num == 1 || h->slice_table[mb_xy] == h->slice_table[top_xy]) && !FRAME_MBAFF)
-//         return;
-
     /* Wow, what a mess, why didn't they simplify the interlacing & intra
      * stuff, I can't imagine that these complex rules are worth it. */
 
@@ -762,10 +758,6 @@ static av_always_inline int fill_caches(H264Context *h, int mb_type, int for_deb
         const int curr_mb_field_flag     = IS_INTERLACED(mb_type);
         if(s->mb_y&1){
             if (left_mb_field_flag != curr_mb_field_flag) {
-                if(for_deblock){
-                    left_xy[0] = mb_xy - s->mb_stride - 1;
-                    left_xy[1] = mb_xy                - 1;
-                }else{
                 left_xy[1] = left_xy[0] = mb_xy - s->mb_stride - 1;
                 if (curr_mb_field_flag) {
                     left_xy[1] += s->mb_stride;
@@ -776,7 +768,6 @@ static av_always_inline int fill_caches(H264Context *h, int mb_type, int for_deb
                     topleft_partition = 0;
                     left_block = left_block_options[1];
                 }
-                }
             }
         }else{
             if(curr_mb_field_flag){
@@ -785,10 +776,6 @@ static av_always_inline int fill_caches(H264Context *h, int mb_type, int for_deb
                 top_xy      += s->mb_stride & (((s->current_picture.mb_type[top_xy    ]>>7)&1)-1);
             }
             if (left_mb_field_flag != curr_mb_field_flag) {
-                if(for_deblock){
-                    left_xy[0] = mb_xy                - 1;
-                    left_xy[1] = mb_xy + s->mb_stride - 1;
-                }else{
                 left_xy[1] = left_xy[0] = mb_xy - 1;
                 if (curr_mb_field_flag) {
                     left_xy[1] += s->mb_stride;
@@ -796,7 +783,6 @@ static av_always_inline int fill_caches(H264Context *h, int mb_type, int for_deb
                 } else {
                     left_block = left_block_options[2];
                 }
-                }
             }
         }
     }
@@ -804,79 +790,6 @@ static av_always_inline int fill_caches(H264Context *h, int mb_type, int for_deb
     h->top_mb_xy = top_xy;
     h->left_mb_xy[0] = left_xy[0];
     h->left_mb_xy[1] = left_xy[1];
-    if(for_deblock){
-
-        //for sufficiently low qp, filtering wouldn't do anything
-        //this is a conservative estimate: could also check beta_offset and more accurate chroma_qp
-        int qp_thresh = h->qp_thresh; //FIXME strictly we should store qp_thresh for each mb of a slice
-        int qp = s->current_picture.qscale_table[mb_xy];
-        if(qp <= qp_thresh
-           && (left_xy[0]<0 || ((qp + s->current_picture.qscale_table[left_xy[0]] + 1)>>1) <= qp_thresh)
-           && (top_xy   < 0 || ((qp + s->current_picture.qscale_table[top_xy    ] + 1)>>1) <= qp_thresh)){
-            if(!FRAME_MBAFF)
-                return 1;
-            if(   (left_xy[0]< 0            || ((qp + s->current_picture.qscale_table[left_xy[1]             ] + 1)>>1) <= qp_thresh)
-               && (top_xy    < s->mb_stride || ((qp + s->current_picture.qscale_table[top_xy    -s->mb_stride] + 1)>>1) <= qp_thresh))
-                return 1;
-        }
-
-        if(h->deblocking_filter == 2){
-            h->top_type    = top_type     = h->slice_table[top_xy     ] == h->slice_num ? s->current_picture.mb_type[top_xy]     : 0;
-            h->left_type[0]= left_type[0] = h->slice_table[left_xy[0] ] == h->slice_num ? s->current_picture.mb_type[left_xy[0]] : 0;
-            h->left_type[1]= left_type[1] = h->slice_table[left_xy[1] ] == h->slice_num ? s->current_picture.mb_type[left_xy[1]] : 0;
-        }else{
-            h->top_type    = top_type     = h->slice_table[top_xy     ] < 0xFFFF ? s->current_picture.mb_type[top_xy]     : 0;
-            h->left_type[0]= left_type[0] = h->slice_table[left_xy[0] ] < 0xFFFF ? s->current_picture.mb_type[left_xy[0]] : 0;
-            h->left_type[1]= left_type[1] = h->slice_table[left_xy[1] ] < 0xFFFF ? s->current_picture.mb_type[left_xy[1]] : 0;
-        }
-        if(IS_INTRA(mb_type))
-            return 0;
-
-        AV_COPY64(&h->non_zero_count_cache[0+8*1], &h->non_zero_count[mb_xy][ 0]);
-        AV_COPY64(&h->non_zero_count_cache[0+8*2], &h->non_zero_count[mb_xy][ 8]);
-        *((uint32_t*)&h->non_zero_count_cache[0+8*5])= *((uint32_t*)&h->non_zero_count[mb_xy][16]);
-        *((uint32_t*)&h->non_zero_count_cache[4+8*3])= *((uint32_t*)&h->non_zero_count[mb_xy][20]);
-        AV_COPY64(&h->non_zero_count_cache[0+8*4], &h->non_zero_count[mb_xy][24]);
-
-        h->cbp= h->cbp_table[mb_xy];
-
-        {
-            int list;
-            for(list=0; list<h->list_count; list++){
-                int8_t *ref;
-                int y, b_stride;
-                int16_t (*mv_dst)[2];
-                int16_t (*mv_src)[2];
-
-                if(!USES_LIST(mb_type, list)){
-                    fill_rectangle(  h->mv_cache[list][scan8[0]], 4, 4, 8, pack16to32(0,0), 4);
-                    *(uint32_t*)&h->ref_cache[list][scan8[ 0]] =
-                    *(uint32_t*)&h->ref_cache[list][scan8[ 2]] =
-                    *(uint32_t*)&h->ref_cache[list][scan8[ 8]] =
-                    *(uint32_t*)&h->ref_cache[list][scan8[10]] = ((LIST_NOT_USED)&0xFF)*0x01010101;
-                    continue;
-                }
-
-                ref = &s->current_picture.ref_index[list][h->mb2b8_xy[mb_xy]];
-                {
-                    int (*ref2frm)[64] = h->ref2frm[ h->slice_num&(MAX_SLICES-1) ][0] + (MB_MBAFF ? 20 : 2);
-                    *(uint32_t*)&h->ref_cache[list][scan8[ 0]] =
-                    *(uint32_t*)&h->ref_cache[list][scan8[ 2]] = (pack16to32(ref2frm[list][ref[0]],ref2frm[list][ref[1]])&0x00FF00FF)*0x0101;
-                    ref += h->b8_stride;
-                    *(uint32_t*)&h->ref_cache[list][scan8[ 8]] =
-                    *(uint32_t*)&h->ref_cache[list][scan8[10]] = (pack16to32(ref2frm[list][ref[0]],ref2frm[list][ref[1]])&0x00FF00FF)*0x0101;
-                }
-
-                b_stride = h->b_stride;
-                mv_dst   = &h->mv_cache[list][scan8[0]];
-                mv_src   = &s->current_picture.motion_val[list][4*s->mb_x + 4*s->mb_y*b_stride];
-                for(y=0; y<4; y++){
-                    AV_COPY128(mv_dst + 8*y, mv_src + y*b_stride);
-                }
-
-            }
-        }
-    }else{
         topleft_type = h->slice_table[topleft_xy ] == h->slice_num ? s->current_picture.mb_type[topleft_xy] : 0;
         top_type     = h->slice_table[top_xy     ] == h->slice_num ? s->current_picture.mb_type[top_xy]     : 0;
         topright_type= h->slice_table[topright_xy] == h->slice_num ? s->current_picture.mb_type[topright_xy]: 0;
@@ -962,7 +875,6 @@ static av_always_inline int fill_caches(H264Context *h, int mb_type, int for_deb
                 }
             }
         }
-    }
 
 
 /*
@@ -976,14 +888,12 @@ static av_always_inline int fill_caches(H264Context *h, int mb_type, int for_deb
 //FIXME constraint_intra_pred & partitioning & nnz (let us hope this is just a typo in the spec)
     if(top_type){
         *(uint32_t*)&h->non_zero_count_cache[4+8*0]= *(uint32_t*)&h->non_zero_count[top_xy][4+3*8];
-        if(!for_deblock){
             h->non_zero_count_cache[1+8*0]= h->non_zero_count[top_xy][1+1*8];
             h->non_zero_count_cache[2+8*0]= h->non_zero_count[top_xy][2+1*8];
 
             h->non_zero_count_cache[1+8*3]= h->non_zero_count[top_xy][1+2*8];
             h->non_zero_count_cache[2+8*3]= h->non_zero_count[top_xy][2+2*8];
-        }
-    }else if(!for_deblock){
+    }else {
             h->non_zero_count_cache[1+8*0]=
             h->non_zero_count_cache[2+8*0]=
 
@@ -996,11 +906,9 @@ static av_always_inline int fill_caches(H264Context *h, int mb_type, int for_deb
         if(left_type[i]){
             h->non_zero_count_cache[3+8*1 + 2*8*i]= h->non_zero_count[left_xy[i]][left_block[8+0+2*i]];
             h->non_zero_count_cache[3+8*2 + 2*8*i]= h->non_zero_count[left_xy[i]][left_block[8+1+2*i]];
-            if(!for_deblock){
                 h->non_zero_count_cache[0+8*1 +   8*i]= h->non_zero_count[left_xy[i]][left_block[8+4+2*i]];
                 h->non_zero_count_cache[0+8*4 +   8*i]= h->non_zero_count[left_xy[i]][left_block[8+5+2*i]];
-            }
-        }else if(!for_deblock){
+        }else{
                 h->non_zero_count_cache[3+8*1 + 2*8*i]=
                 h->non_zero_count_cache[3+8*2 + 2*8*i]=
                 h->non_zero_count_cache[0+8*1 +   8*i]=
@@ -1008,39 +916,7 @@ static av_always_inline int fill_caches(H264Context *h, int mb_type, int for_deb
         }
     }
 
-    // CAVLC 8x8dct requires NNZ values for residual decoding that differ from what the loop filter needs
-    if(for_deblock && !CABAC && h->pps.transform_8x8_mode){
-        if(IS_8x8DCT(top_type)){
-            h->non_zero_count_cache[4+8*0]=
-            h->non_zero_count_cache[5+8*0]= h->cbp_table[top_xy] & 4;
-            h->non_zero_count_cache[6+8*0]=
-            h->non_zero_count_cache[7+8*0]= h->cbp_table[top_xy] & 8;
-        }
-        if(IS_8x8DCT(left_type[0])){
-            h->non_zero_count_cache[3+8*1]=
-            h->non_zero_count_cache[3+8*2]= h->cbp_table[left_xy[0]]&2; //FIXME check MBAFF
-        }
-        if(IS_8x8DCT(left_type[1])){
-            h->non_zero_count_cache[3+8*3]=
-            h->non_zero_count_cache[3+8*4]= h->cbp_table[left_xy[1]]&8; //FIXME check MBAFF
-        }
-
-        if(IS_8x8DCT(mb_type)){
-            h->non_zero_count_cache[scan8[0   ]]= h->non_zero_count_cache[scan8[1   ]]=
-            h->non_zero_count_cache[scan8[2   ]]= h->non_zero_count_cache[scan8[3   ]]= h->cbp & 1;
-
-            h->non_zero_count_cache[scan8[0+ 4]]= h->non_zero_count_cache[scan8[1+ 4]]=
-            h->non_zero_count_cache[scan8[2+ 4]]= h->non_zero_count_cache[scan8[3+ 4]]= h->cbp & 2;
-
-            h->non_zero_count_cache[scan8[0+ 8]]= h->non_zero_count_cache[scan8[1+ 8]]=
-            h->non_zero_count_cache[scan8[2+ 8]]= h->non_zero_count_cache[scan8[3+ 8]]= h->cbp & 4;
-
-            h->non_zero_count_cache[scan8[0+12]]= h->non_zero_count_cache[scan8[1+12]]=
-            h->non_zero_count_cache[scan8[2+12]]= h->non_zero_count_cache[scan8[3+12]]= h->cbp & 8;
-        }
-    }
-
-    if( CABAC && !for_deblock) {
+    if( CABAC ) {
         // top_cbp
         if(top_type) {
             h->top_cbp = h->cbp_table[top_xy];
@@ -1069,7 +945,7 @@ static av_always_inline int fill_caches(H264Context *h, int mb_type, int for_deb
     if(IS_INTER(mb_type) || IS_DIRECT(mb_type)){
         int list;
         for(list=0; list<h->list_count; list++){
-            if(!for_deblock && !USES_LIST(mb_type, list) && !IS_DIRECT(mb_type)){
+            if(!USES_LIST(mb_type, list) && !IS_DIRECT(mb_type)){
                 /*if(!h->mv_cache_clean[list]){
                     memset(h->mv_cache [list],  0, 8*5*2*sizeof(int16_t)); //FIXME clean only input? clean at all?
                     memset(h->ref_cache[list], PART_NOT_AVAILABLE, 8*5*sizeof(int8_t));
@@ -1083,50 +959,15 @@ static av_always_inline int fill_caches(H264Context *h, int mb_type, int for_deb
                 const int b_xy= h->mb2b_xy[top_xy] + 3*h->b_stride;
                 const int b8_xy= h->mb2b8_xy[top_xy] + h->b8_stride;
                 AV_COPY128(h->mv_cache[list][scan8[0] + 0 - 1*8], s->current_picture.motion_val[list][b_xy + 0]);
-                if(for_deblock){
-                    int (*ref2frm)[64] = h->ref2frm[ h->slice_table[top_xy]&(MAX_SLICES-1) ][0] + (MB_MBAFF ? 20 : 2);
-                    h->ref_cache[list][scan8[0] + 0 - 1*8]=
-                    h->ref_cache[list][scan8[0] + 1 - 1*8]= ref2frm[list][s->current_picture.ref_index[list][b8_xy + 0]];
-                    h->ref_cache[list][scan8[0] + 2 - 1*8]=
-                    h->ref_cache[list][scan8[0] + 3 - 1*8]= ref2frm[list][s->current_picture.ref_index[list][b8_xy + 1]];
-                }else{
                     h->ref_cache[list][scan8[0] + 0 - 1*8]=
                     h->ref_cache[list][scan8[0] + 1 - 1*8]= s->current_picture.ref_index[list][b8_xy + 0];
                     h->ref_cache[list][scan8[0] + 2 - 1*8]=
                     h->ref_cache[list][scan8[0] + 3 - 1*8]= s->current_picture.ref_index[list][b8_xy + 1];
-                }
             }else{
                 AV_ZERO128(h->mv_cache[list][scan8[0] + 0 - 1*8]);
-                *(uint32_t*)&h->ref_cache[list][scan8[0] + 0 - 1*8]= (((for_deblock||top_type) ? LIST_NOT_USED : PART_NOT_AVAILABLE)&0xFF)*0x01010101;
+                *(uint32_t*)&h->ref_cache[list][scan8[0] + 0 - 1*8]= ((top_type ? LIST_NOT_USED : PART_NOT_AVAILABLE)&0xFF)*0x01010101;
             }
 
-            if(for_deblock){
-                if(!IS_INTERLACED(mb_type^left_type[0])){
-                    if(USES_LIST(left_type[0], list)){
-                        const int b_xy= h->mb2b_xy[left_xy[0]] + 3;
-                        const int b8_xy= h->mb2b8_xy[left_xy[0]] + 1;
-                        int (*ref2frm)[64] = h->ref2frm[ h->slice_table[left_xy[0]]&(MAX_SLICES-1) ][0] + (MB_MBAFF ? 20 : 2);
-                        *(uint32_t*)h->mv_cache[list][scan8[0] - 1 + 0 ]= *(uint32_t*)s->current_picture.motion_val[list][b_xy + h->b_stride*0];
-                        *(uint32_t*)h->mv_cache[list][scan8[0] - 1 + 8 ]= *(uint32_t*)s->current_picture.motion_val[list][b_xy + h->b_stride*1];
-                        *(uint32_t*)h->mv_cache[list][scan8[0] - 1 +16 ]= *(uint32_t*)s->current_picture.motion_val[list][b_xy + h->b_stride*2];
-                        *(uint32_t*)h->mv_cache[list][scan8[0] - 1 +24 ]= *(uint32_t*)s->current_picture.motion_val[list][b_xy + h->b_stride*3];
-                        h->ref_cache[list][scan8[0] - 1 + 0 ]=
-                        h->ref_cache[list][scan8[0] - 1 + 8 ]= ref2frm[list][s->current_picture.ref_index[list][b8_xy + h->b8_stride*0]];
-                        h->ref_cache[list][scan8[0] - 1 +16 ]=
-                        h->ref_cache[list][scan8[0] - 1 +24 ]= ref2frm[list][s->current_picture.ref_index[list][b8_xy + h->b8_stride*1]];
-                    }else{
-                        *(uint32_t*)h->mv_cache [list][scan8[0] - 1 + 0 ]=
-                        *(uint32_t*)h->mv_cache [list][scan8[0] - 1 + 8 ]=
-                        *(uint32_t*)h->mv_cache [list][scan8[0] - 1 +16 ]=
-                        *(uint32_t*)h->mv_cache [list][scan8[0] - 1 +24 ]= 0;
-                        h->ref_cache[list][scan8[0] - 1 + 0  ]=
-                        h->ref_cache[list][scan8[0] - 1 + 8  ]=
-                        h->ref_cache[list][scan8[0] - 1 + 16 ]=
-                        h->ref_cache[list][scan8[0] - 1 + 24 ]= LIST_NOT_USED;
-                    }
-                }
-                continue;
-            }else{
             for(i=0; i<2; i++){
                 int cache_idx = scan8[0] - 1 + i*2*8;
                 if(USES_LIST(left_type[i], list)){
@@ -1143,7 +984,6 @@ static av_always_inline int fill_caches(H264Context *h, int mb_type, int for_deb
                     h->ref_cache[list][cache_idx+8]= (left_type[i]) ? LIST_NOT_USED : PART_NOT_AVAILABLE;
                 }
             }
-            }
 
             if((IS_DIRECT(mb_type) && !h->direct_spatial_mv_pred) && !FRAME_MBAFF)
                 continue;
@@ -1277,13 +1117,7 @@ static av_always_inline int fill_caches(H264Context *h, int mb_type, int for_deb
     }
 #endif
 
-    if(!for_deblock)
         h->neighbor_transform_size= !!IS_8x8DCT(top_type) + !!IS_8x8DCT(left_type[0]);
-    return 0;
-}
-
-static void fill_decode_caches(H264Context *h, int mb_type){
-    fill_caches(h, mb_type, 0);
 }
 
 /**
@@ -1291,7 +1125,213 @@ static void fill_decode_caches(H264Context *h, int mb_type){
  * @returns non zero if the loop filter can be skiped
  */
 static int fill_filter_caches(H264Context *h, int mb_type){
-    return fill_caches(h, mb_type, 1);
+    MpegEncContext * const s = &h->s;
+    const int mb_xy= h->mb_xy;
+    int top_xy, left_xy[2];
+    int top_type, left_type[2];
+    int i;
+
+    top_xy     = mb_xy  - (s->mb_stride << MB_FIELD);
+
+    //FIXME deblocking could skip the intra and nnz parts.
+
+    /* Wow, what a mess, why didn't they simplify the interlacing & intra
+     * stuff, I can't imagine that these complex rules are worth it. */
+
+    left_xy[1] = left_xy[0] = mb_xy-1;
+    if(FRAME_MBAFF){
+        const int left_mb_field_flag     = IS_INTERLACED(s->current_picture.mb_type[mb_xy-1]);
+        const int curr_mb_field_flag     = IS_INTERLACED(mb_type);
+        if(s->mb_y&1){
+            if (left_mb_field_flag != curr_mb_field_flag) {
+                left_xy[0] = mb_xy - s->mb_stride - 1;
+                left_xy[1] = mb_xy                - 1;
+            }
+        }else{
+            if(curr_mb_field_flag){
+                top_xy      += s->mb_stride & (((s->current_picture.mb_type[top_xy    ]>>7)&1)-1);
+            }
+            if (left_mb_field_flag != curr_mb_field_flag) {
+                left_xy[0] = mb_xy                - 1;
+                left_xy[1] = mb_xy + s->mb_stride - 1;
+            }
+        }
+    }
+
+    h->top_mb_xy = top_xy;
+    h->left_mb_xy[0] = left_xy[0];
+    h->left_mb_xy[1] = left_xy[1];
+    {
+        //for sufficiently low qp, filtering wouldn't do anything
+        //this is a conservative estimate: could also check beta_offset and more accurate chroma_qp
+        int qp_thresh = h->qp_thresh; //FIXME strictly we should store qp_thresh for each mb of a slice
+        int qp = s->current_picture.qscale_table[mb_xy];
+        if(qp <= qp_thresh
+           && (left_xy[0]<0 || ((qp + s->current_picture.qscale_table[left_xy[0]] + 1)>>1) <= qp_thresh)
+           && (top_xy   < 0 || ((qp + s->current_picture.qscale_table[top_xy    ] + 1)>>1) <= qp_thresh)){
+            if(!FRAME_MBAFF)
+                return 1;
+            if(   (left_xy[0]< 0            || ((qp + s->current_picture.qscale_table[left_xy[1]             ] + 1)>>1) <= qp_thresh)
+               && (top_xy    < s->mb_stride || ((qp + s->current_picture.qscale_table[top_xy    -s->mb_stride] + 1)>>1) <= qp_thresh))
+                return 1;
+        }
+    }
+
+    if(h->deblocking_filter == 2){
+        h->top_type    = top_type     = h->slice_table[top_xy     ] == h->slice_num ? s->current_picture.mb_type[top_xy]     : 0;
+        h->left_type[0]= left_type[0] = h->slice_table[left_xy[0] ] == h->slice_num ? s->current_picture.mb_type[left_xy[0]] : 0;
+        h->left_type[1]= left_type[1] = h->slice_table[left_xy[1] ] == h->slice_num ? s->current_picture.mb_type[left_xy[1]] : 0;
+    }else{
+        h->top_type    = top_type     = h->slice_table[top_xy     ] < 0xFFFF ? s->current_picture.mb_type[top_xy]     : 0;
+        h->left_type[0]= left_type[0] = h->slice_table[left_xy[0] ] < 0xFFFF ? s->current_picture.mb_type[left_xy[0]] : 0;
+        h->left_type[1]= left_type[1] = h->slice_table[left_xy[1] ] < 0xFFFF ? s->current_picture.mb_type[left_xy[1]] : 0;
+    }
+    if(IS_INTRA(mb_type))
+        return 0;
+
+    AV_COPY64(&h->non_zero_count_cache[0+8*1], &h->non_zero_count[mb_xy][ 0]);
+    AV_COPY64(&h->non_zero_count_cache[0+8*2], &h->non_zero_count[mb_xy][ 8]);
+    *((uint32_t*)&h->non_zero_count_cache[0+8*5])= *((uint32_t*)&h->non_zero_count[mb_xy][16]);
+    *((uint32_t*)&h->non_zero_count_cache[4+8*3])= *((uint32_t*)&h->non_zero_count[mb_xy][20]);
+    AV_COPY64(&h->non_zero_count_cache[0+8*4], &h->non_zero_count[mb_xy][24]);
+
+    h->cbp= h->cbp_table[mb_xy];
+
+    {
+        int list;
+        for(list=0; list<h->list_count; list++){
+            int8_t *ref;
+            int y, b_stride;
+            int16_t (*mv_dst)[2];
+            int16_t (*mv_src)[2];
+
+            if(!USES_LIST(mb_type, list)){
+                fill_rectangle(  h->mv_cache[list][scan8[0]], 4, 4, 8, pack16to32(0,0), 4);
+                *(uint32_t*)&h->ref_cache[list][scan8[ 0]] =
+                *(uint32_t*)&h->ref_cache[list][scan8[ 2]] =
+                *(uint32_t*)&h->ref_cache[list][scan8[ 8]] =
+                *(uint32_t*)&h->ref_cache[list][scan8[10]] = ((LIST_NOT_USED)&0xFF)*0x01010101;
+                continue;
+            }
+
+            ref = &s->current_picture.ref_index[list][h->mb2b8_xy[mb_xy]];
+            {
+                int (*ref2frm)[64] = h->ref2frm[ h->slice_num&(MAX_SLICES-1) ][0] + (MB_MBAFF ? 20 : 2);
+                *(uint32_t*)&h->ref_cache[list][scan8[ 0]] =
+                *(uint32_t*)&h->ref_cache[list][scan8[ 2]] = (pack16to32(ref2frm[list][ref[0]],ref2frm[list][ref[1]])&0x00FF00FF)*0x0101;
+                ref += h->b8_stride;
+                *(uint32_t*)&h->ref_cache[list][scan8[ 8]] =
+                *(uint32_t*)&h->ref_cache[list][scan8[10]] = (pack16to32(ref2frm[list][ref[0]],ref2frm[list][ref[1]])&0x00FF00FF)*0x0101;
+            }
+
+            b_stride = h->b_stride;
+            mv_dst   = &h->mv_cache[list][scan8[0]];
+            mv_src   = &s->current_picture.motion_val[list][4*s->mb_x + 4*s->mb_y*b_stride];
+            for(y=0; y<4; y++){
+                AV_COPY128(mv_dst + 8*y, mv_src + y*b_stride);
+            }
+
+        }
+    }
+
+
+/*
+0 . T T. T T T T
+1 L . .L . . . .
+2 L . .L . . . .
+3 . T TL . . . .
+4 L . .L . . . .
+5 L . .. . . . .
+*/
+//FIXME constraint_intra_pred & partitioning & nnz (let us hope this is just a typo in the spec)
+    if(top_type){
+        *(uint32_t*)&h->non_zero_count_cache[4+8*0]= *(uint32_t*)&h->non_zero_count[top_xy][4+3*8];
+    }
+
+    if(left_type[0]){
+        h->non_zero_count_cache[3+8*1]= h->non_zero_count[left_xy[0]][7+0*8];
+        h->non_zero_count_cache[3+8*2]= h->non_zero_count[left_xy[0]][7+1*8];
+        h->non_zero_count_cache[3+8*3]= h->non_zero_count[left_xy[0]][7+2*8];
+        h->non_zero_count_cache[3+8*4]= h->non_zero_count[left_xy[0]][7+3*8];
+    }
+
+    // CAVLC 8x8dct requires NNZ values for residual decoding that differ from what the loop filter needs
+    if(!CABAC && h->pps.transform_8x8_mode){
+        if(IS_8x8DCT(top_type)){
+            h->non_zero_count_cache[4+8*0]=
+            h->non_zero_count_cache[5+8*0]= h->cbp_table[top_xy] & 4;
+            h->non_zero_count_cache[6+8*0]=
+            h->non_zero_count_cache[7+8*0]= h->cbp_table[top_xy] & 8;
+        }
+        if(IS_8x8DCT(left_type[0])){
+            h->non_zero_count_cache[3+8*1]=
+            h->non_zero_count_cache[3+8*2]= h->cbp_table[left_xy[0]]&2; //FIXME check MBAFF
+        }
+        if(IS_8x8DCT(left_type[1])){
+            h->non_zero_count_cache[3+8*3]=
+            h->non_zero_count_cache[3+8*4]= h->cbp_table[left_xy[1]]&8; //FIXME check MBAFF
+        }
+
+        if(IS_8x8DCT(mb_type)){
+            h->non_zero_count_cache[scan8[0   ]]= h->non_zero_count_cache[scan8[1   ]]=
+            h->non_zero_count_cache[scan8[2   ]]= h->non_zero_count_cache[scan8[3   ]]= h->cbp & 1;
+
+            h->non_zero_count_cache[scan8[0+ 4]]= h->non_zero_count_cache[scan8[1+ 4]]=
+            h->non_zero_count_cache[scan8[2+ 4]]= h->non_zero_count_cache[scan8[3+ 4]]= h->cbp & 2;
+
+            h->non_zero_count_cache[scan8[0+ 8]]= h->non_zero_count_cache[scan8[1+ 8]]=
+            h->non_zero_count_cache[scan8[2+ 8]]= h->non_zero_count_cache[scan8[3+ 8]]= h->cbp & 4;
+
+            h->non_zero_count_cache[scan8[0+12]]= h->non_zero_count_cache[scan8[1+12]]=
+            h->non_zero_count_cache[scan8[2+12]]= h->non_zero_count_cache[scan8[3+12]]= h->cbp & 8;
+        }
+    }
+
+    if(IS_INTER(mb_type) || IS_DIRECT(mb_type)){
+        int list;
+        for(list=0; list<h->list_count; list++){
+            if(USES_LIST(top_type, list)){
+                const int b_xy= h->mb2b_xy[top_xy] + 3*h->b_stride;
+                const int b8_xy= h->mb2b8_xy[top_xy] + h->b8_stride;
+                int (*ref2frm)[64] = h->ref2frm[ h->slice_table[top_xy]&(MAX_SLICES-1) ][0] + (MB_MBAFF ? 20 : 2);
+                AV_COPY128(h->mv_cache[list][scan8[0] + 0 - 1*8], s->current_picture.motion_val[list][b_xy + 0]);
+                h->ref_cache[list][scan8[0] + 0 - 1*8]=
+                h->ref_cache[list][scan8[0] + 1 - 1*8]= ref2frm[list][s->current_picture.ref_index[list][b8_xy + 0]];
+                h->ref_cache[list][scan8[0] + 2 - 1*8]=
+                h->ref_cache[list][scan8[0] + 3 - 1*8]= ref2frm[list][s->current_picture.ref_index[list][b8_xy + 1]];
+            }else{
+                AV_ZERO128(h->mv_cache[list][scan8[0] + 0 - 1*8]);
+                *(uint32_t*)&h->ref_cache[list][scan8[0] + 0 - 1*8]= ((LIST_NOT_USED)&0xFF)*0x01010101;
+            }
+
+            if(!IS_INTERLACED(mb_type^left_type[0])){
+                if(USES_LIST(left_type[0], list)){
+                    const int b_xy= h->mb2b_xy[left_xy[0]] + 3;
+                    const int b8_xy= h->mb2b8_xy[left_xy[0]] + 1;
+                    int (*ref2frm)[64] = h->ref2frm[ h->slice_table[left_xy[0]]&(MAX_SLICES-1) ][0] + (MB_MBAFF ? 20 : 2);
+                    *(uint32_t*)h->mv_cache[list][scan8[0] - 1 + 0 ]= *(uint32_t*)s->current_picture.motion_val[list][b_xy + h->b_stride*0];
+                    *(uint32_t*)h->mv_cache[list][scan8[0] - 1 + 8 ]= *(uint32_t*)s->current_picture.motion_val[list][b_xy + h->b_stride*1];
+                    *(uint32_t*)h->mv_cache[list][scan8[0] - 1 +16 ]= *(uint32_t*)s->current_picture.motion_val[list][b_xy + h->b_stride*2];
+                    *(uint32_t*)h->mv_cache[list][scan8[0] - 1 +24 ]= *(uint32_t*)s->current_picture.motion_val[list][b_xy + h->b_stride*3];
+                    h->ref_cache[list][scan8[0] - 1 + 0 ]=
+                    h->ref_cache[list][scan8[0] - 1 + 8 ]= ref2frm[list][s->current_picture.ref_index[list][b8_xy + h->b8_stride*0]];
+                    h->ref_cache[list][scan8[0] - 1 +16 ]=
+                    h->ref_cache[list][scan8[0] - 1 +24 ]= ref2frm[list][s->current_picture.ref_index[list][b8_xy + h->b8_stride*1]];
+                }else{
+                    *(uint32_t*)h->mv_cache [list][scan8[0] - 1 + 0 ]=
+                    *(uint32_t*)h->mv_cache [list][scan8[0] - 1 + 8 ]=
+                    *(uint32_t*)h->mv_cache [list][scan8[0] - 1 +16 ]=
+                    *(uint32_t*)h->mv_cache [list][scan8[0] - 1 +24 ]= 0;
+                    h->ref_cache[list][scan8[0] - 1 + 0  ]=
+                    h->ref_cache[list][scan8[0] - 1 + 8  ]=
+                    h->ref_cache[list][scan8[0] - 1 + 16 ]=
+                    h->ref_cache[list][scan8[0] - 1 + 24 ]= LIST_NOT_USED;
+                }
+            }
+        }
+    }
+
+    return 0;
 }
 
 /**