* H.26L/H.264/AVC/JVT/14496-10/... motion vector predicion
* Copyright (c) 2003 Michael Niedermayer <michaelni@gmx.at>
*
- * This file is part of FFmpeg.
+ * This file is part of Libav.
*
- * FFmpeg is free software; you can redistribute it and/or
+ * Libav is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
- * FFmpeg is distributed in the hope that it will be useful,
+ * Libav is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
- * License along with FFmpeg; if not, write to the Free Software
+ * License along with Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
- * @file libavcodec/h264_mvpred.h
+ * @file
* H.264 / AVC / MPEG4 part10 motion vector predicion.
* @author Michael Niedermayer <michaelni@gmx.at>
*/
//#undef NDEBUG
#include <assert.h>
-static inline int fetch_diagonal_mv(H264Context *h, const int16_t **C, int i, int list, int part_width){
+static av_always_inline int fetch_diagonal_mv(H264Context *h, const int16_t **C, int i, int list, int part_width){
const int topright_ref= h->ref_cache[list][ i - 8 + part_width ];
MpegEncContext *s = &h->s;
/* there is no consistent mapping of mvs to neighboring locations that will
* make mbaff happy, so we can't move all this logic to fill_caches */
if(FRAME_MBAFF){
- const uint32_t *mb_types = s->current_picture_ptr->mb_type;
- const int16_t *mv;
- *(uint32_t*)h->mv_cache[list][scan8[0]-2] = 0;
- *C = h->mv_cache[list][scan8[0]-2];
-
-#define SET_DIAG_MV(MV_OP, REF_OP, X4, Y4)\
- const int x4 = X4, y4 = Y4;\
- const int mb_type = mb_types[(x4>>2)+(y4>>2)*s->mb_stride];\
+
+#define SET_DIAG_MV(MV_OP, REF_OP, XY, Y4)\
+ const int xy = XY, y4 = Y4;\
+ const int mb_type = mb_types[xy+(y4>>2)*s->mb_stride];\
if(!USES_LIST(mb_type,list))\
return LIST_NOT_USED;\
- mv = s->current_picture_ptr->motion_val[list][x4 + y4*h->b_stride];\
+ mv = s->current_picture_ptr->f.motion_val[list][h->mb2b_xy[xy] + 3 + y4*h->b_stride];\
h->mv_cache[list][scan8[0]-2][0] = mv[0];\
h->mv_cache[list][scan8[0]-2][1] = mv[1] MV_OP;\
- return s->current_picture_ptr->ref_index[list][(x4>>1) + (y4>>1)*h->b8_stride] REF_OP;
+ return s->current_picture_ptr->f.ref_index[list][4*xy + 1 + (y4 & ~1)] REF_OP;
if(topright_ref == PART_NOT_AVAILABLE
- && ((s->mb_y&1) || i >= scan8[0]+8) && (i&7)==4
+ && i >= scan8[0]+8 && (i&7)==4
&& h->ref_cache[list][scan8[0]-1] != PART_NOT_AVAILABLE){
+ const uint32_t *mb_types = s->current_picture_ptr->f.mb_type;
+ const int16_t *mv;
+ AV_ZERO32(h->mv_cache[list][scan8[0]-2]);
+ *C = h->mv_cache[list][scan8[0]-2];
+
if(!MB_FIELD
- && IS_INTERLACED(mb_types[h->left_mb_xy[0]])){
- SET_DIAG_MV(*2, >>1, s->mb_x*4-1, (s->mb_y|1)*4+(s->mb_y&1)*2+(i>>4)-1);
+ && IS_INTERLACED(h->left_type[0])){
+ SET_DIAG_MV(*2, >>1, h->left_mb_xy[0]+s->mb_stride, (s->mb_y&1)*2+(i>>5));
}
if(MB_FIELD
- && !IS_INTERLACED(mb_types[h->left_mb_xy[0]])
- && i >= scan8[0]+8){
+ && !IS_INTERLACED(h->left_type[0])){
// left shift will turn LIST_NOT_USED into PART_NOT_AVAILABLE, but that's OK.
- SET_DIAG_MV(/2, <<1, s->mb_x*4-1, (s->mb_y&~1)*4 - 1 + ((i-scan8[0])>>3)*2);
+ SET_DIAG_MV(/2, <<1, h->left_mb_xy[i>=36], ((i>>2))&3);
}
}
#undef SET_DIAG_MV
}
/**
- * gets the predicted MV.
+ * Get the predicted MV.
* @param n the block index
* @param part_width the width of the partition (4, 8,16) -> (1, 2, 4)
* @param mx the x component of the predicted motion vector
* @param my the y component of the predicted motion vector
*/
-static inline void pred_motion(H264Context * const h, int n, int part_width, int list, int ref, int * const mx, int * const my){
+static av_always_inline void pred_motion(H264Context * const h, int n, int part_width, int list, int ref, int * const mx, int * const my){
const int index8= scan8[n];
const int top_ref= h->ref_cache[list][ index8 - 8 ];
const int left_ref= h->ref_cache[list][ index8 - 1 ];
}
/**
- * gets the directionally predicted 16x8 MV.
+ * Get the directionally predicted 16x8 MV.
* @param n the block index
* @param mx the x component of the predicted motion vector
* @param my the y component of the predicted motion vector
*/
-static inline void pred_16x8_motion(H264Context * const h, int n, int list, int ref, int * const mx, int * const my){
+static av_always_inline void pred_16x8_motion(H264Context * const h, int n, int list, int ref, int * const mx, int * const my){
if(n==0){
const int top_ref= h->ref_cache[list][ scan8[0] - 8 ];
const int16_t * const B= h->mv_cache[list][ scan8[0] - 8 ];
}
/**
- * gets the directionally predicted 8x16 MV.
+ * Get the directionally predicted 8x16 MV.
* @param n the block index
* @param mx the x component of the predicted motion vector
* @param my the y component of the predicted motion vector
*/
-static inline void pred_8x16_motion(H264Context * const h, int n, int list, int ref, int * const mx, int * const my){
+static av_always_inline void pred_8x16_motion(H264Context * const h, int n, int list, int ref, int * const mx, int * const my){
if(n==0){
const int left_ref= h->ref_cache[list][ scan8[0] - 1 ];
const int16_t * const A= h->mv_cache[list][ scan8[0] - 1 ];
pred_motion(h, n, 2, list, ref, mx, my);
}
-static inline void pred_pskip_motion(H264Context * const h, int * const mx, int * const my){
- const int top_ref = h->ref_cache[0][ scan8[0] - 8 ];
- const int left_ref= h->ref_cache[0][ scan8[0] - 1 ];
+#define FIX_MV_MBAFF(type, refn, mvn, idx)\
+ if(FRAME_MBAFF){\
+ if(MB_FIELD){\
+ if(!IS_INTERLACED(type)){\
+ refn <<= 1;\
+ AV_COPY32(mvbuf[idx], mvn);\
+ mvbuf[idx][1] /= 2;\
+ mvn = mvbuf[idx];\
+ }\
+ }else{\
+ if(IS_INTERLACED(type)){\
+ refn >>= 1;\
+ AV_COPY32(mvbuf[idx], mvn);\
+ mvbuf[idx][1] <<= 1;\
+ mvn = mvbuf[idx];\
+ }\
+ }\
+ }
- tprintf(h->s.avctx, "pred_pskip: (%d) (%d) at %2d %2d\n", top_ref, left_ref, h->s.mb_x, h->s.mb_y);
+static av_always_inline void pred_pskip_motion(H264Context * const h){
+ DECLARE_ALIGNED(4, static const int16_t, zeromv)[2] = {0};
+ DECLARE_ALIGNED(4, int16_t, mvbuf)[3][2];
+ MpegEncContext * const s = &h->s;
+ int8_t *ref = s->current_picture.f.ref_index[0];
+ int16_t (*mv)[2] = s->current_picture.f.motion_val[0];
+ int top_ref, left_ref, diagonal_ref, match_count, mx, my;
+ const int16_t *A, *B, *C;
+ int b_stride = h->b_stride;
+
+ fill_rectangle(&h->ref_cache[0][scan8[0]], 4, 4, 8, 0, 1);
+
+ /* To avoid doing an entire fill_decode_caches, we inline the relevant parts here.
+ * FIXME: this is a partial duplicate of the logic in fill_decode_caches, but it's
+ * faster this way. Is there a way to avoid this duplication?
+ */
+ if(USES_LIST(h->left_type[LTOP], 0)){
+ left_ref = ref[4*h->left_mb_xy[LTOP] + 1 + (h->left_block[0]&~1)];
+ A = mv[h->mb2b_xy[h->left_mb_xy[LTOP]] + 3 + b_stride*h->left_block[0]];
+ FIX_MV_MBAFF(h->left_type[LTOP], left_ref, A, 0);
+ if(!(left_ref | AV_RN32A(A))){
+ goto zeromv;
+ }
+ }else if(h->left_type[LTOP]){
+ left_ref = LIST_NOT_USED;
+ A = zeromv;
+ }else{
+ goto zeromv;
+ }
+
+ if(USES_LIST(h->top_type, 0)){
+ top_ref = ref[4*h->top_mb_xy + 2];
+ B = mv[h->mb2b_xy[h->top_mb_xy] + 3*b_stride];
+ FIX_MV_MBAFF(h->top_type, top_ref, B, 1);
+ if(!(top_ref | AV_RN32A(B))){
+ goto zeromv;
+ }
+ }else if(h->top_type){
+ top_ref = LIST_NOT_USED;
+ B = zeromv;
+ }else{
+ goto zeromv;
+ }
- if(top_ref == PART_NOT_AVAILABLE || left_ref == PART_NOT_AVAILABLE
- || !( top_ref | *(uint32_t*)h->mv_cache[0][ scan8[0] - 8 ])
- || !(left_ref | *(uint32_t*)h->mv_cache[0][ scan8[0] - 1 ])){
+ tprintf(h->s.avctx, "pred_pskip: (%d) (%d) at %2d %2d\n", top_ref, left_ref, h->s.mb_x, h->s.mb_y);
- *mx = *my = 0;
- return;
+ if(USES_LIST(h->topright_type, 0)){
+ diagonal_ref = ref[4*h->topright_mb_xy + 2];
+ C = mv[h->mb2b_xy[h->topright_mb_xy] + 3*b_stride];
+ FIX_MV_MBAFF(h->topright_type, diagonal_ref, C, 2);
+ }else if(h->topright_type){
+ diagonal_ref = LIST_NOT_USED;
+ C = zeromv;
+ }else{
+ if(USES_LIST(h->topleft_type, 0)){
+ diagonal_ref = ref[4*h->topleft_mb_xy + 1 + (h->topleft_partition & 2)];
+ C = mv[h->mb2b_xy[h->topleft_mb_xy] + 3 + b_stride + (h->topleft_partition & 2*b_stride)];
+ FIX_MV_MBAFF(h->topleft_type, diagonal_ref, C, 2);
+ }else if(h->topleft_type){
+ diagonal_ref = LIST_NOT_USED;
+ C = zeromv;
+ }else{
+ diagonal_ref = PART_NOT_AVAILABLE;
+ C = zeromv;
+ }
}
- pred_motion(h, 0, 4, 0, 0, mx, my);
+ match_count= !diagonal_ref + !top_ref + !left_ref;
+ tprintf(h->s.avctx, "pred_pskip_motion match_count=%d\n", match_count);
+ if(match_count > 1){
+ mx = mid_pred(A[0], B[0], C[0]);
+ my = mid_pred(A[1], B[1], C[1]);
+ }else if(match_count==1){
+ if(!left_ref){
+ mx = A[0];
+ my = A[1];
+ }else if(!top_ref){
+ mx = B[0];
+ my = B[1];
+ }else{
+ mx = C[0];
+ my = C[1];
+ }
+ }else{
+ mx = mid_pred(A[0], B[0], C[0]);
+ my = mid_pred(A[1], B[1], C[1]);
+ }
+ fill_rectangle( h->mv_cache[0][scan8[0]], 4, 4, 8, pack16to32(mx,my), 4);
return;
+zeromv:
+ fill_rectangle( h->mv_cache[0][scan8[0]], 4, 4, 8, 0, 4);
+ return;
+}
+
+static void fill_decode_neighbors(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[LEFT_MBS];
+ static const uint8_t left_block_options[4][32]={
+ {0,1,2,3,7,10,8,11,3+0*4, 3+1*4, 3+2*4, 3+3*4, 1+4*4, 1+8*4, 1+5*4, 1+9*4},
+ {2,2,3,3,8,11,8,11,3+2*4, 3+2*4, 3+3*4, 3+3*4, 1+5*4, 1+9*4, 1+5*4, 1+9*4},
+ {0,0,1,1,7,10,7,10,3+0*4, 3+0*4, 3+1*4, 3+1*4, 1+4*4, 1+8*4, 1+4*4, 1+8*4},
+ {0,2,0,2,7,10,7,10,3+0*4, 3+2*4, 3+0*4, 3+2*4, 1+4*4, 1+8*4, 1+4*4, 1+8*4}
+ };
+
+ h->topleft_partition= -1;
+
+ top_xy = mb_xy - (s->mb_stride << MB_FIELD);
+
+ /* Wow, what a mess, why didn't they simplify the interlacing & intra
+ * stuff, I can't imagine that these complex rules are worth it. */
+
+ topleft_xy = top_xy - 1;
+ topright_xy= top_xy + 1;
+ left_xy[LBOT] = left_xy[LTOP] = mb_xy-1;
+ h->left_block = left_block_options[0];
+ if(FRAME_MBAFF){
+ const int left_mb_field_flag = IS_INTERLACED(s->current_picture.f.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[LBOT] = left_xy[LTOP] = mb_xy - s->mb_stride - 1;
+ if (curr_mb_field_flag) {
+ left_xy[LBOT] += s->mb_stride;
+ h->left_block = left_block_options[3];
+ } else {
+ topleft_xy += s->mb_stride;
+ // take top left mv from the middle of the mb, as opposed to all other modes which use the bottom right partition
+ h->topleft_partition = 0;
+ h->left_block = left_block_options[1];
+ }
+ }
+ }else{
+ if(curr_mb_field_flag){
+ topleft_xy += s->mb_stride & (((s->current_picture.f.mb_type[top_xy - 1] >> 7) & 1) - 1);
+ topright_xy += s->mb_stride & (((s->current_picture.f.mb_type[top_xy + 1] >> 7) & 1) - 1);
+ top_xy += s->mb_stride & (((s->current_picture.f.mb_type[top_xy ] >> 7) & 1) - 1);
+ }
+ if (left_mb_field_flag != curr_mb_field_flag) {
+ if (curr_mb_field_flag) {
+ left_xy[LBOT] += s->mb_stride;
+ h->left_block = left_block_options[3];
+ } else {
+ h->left_block = left_block_options[2];
+ }
+ }
+ }
+ }
+
+ h->topleft_mb_xy = topleft_xy;
+ h->top_mb_xy = top_xy;
+ h->topright_mb_xy= topright_xy;
+ h->left_mb_xy[LTOP] = left_xy[LTOP];
+ h->left_mb_xy[LBOT] = left_xy[LBOT];
+ //FIXME do we need all in the context?
+
+ h->topleft_type = s->current_picture.f.mb_type[topleft_xy];
+ h->top_type = s->current_picture.f.mb_type[top_xy];
+ h->topright_type = s->current_picture.f.mb_type[topright_xy];
+ h->left_type[LTOP] = s->current_picture.f.mb_type[left_xy[LTOP]];
+ h->left_type[LBOT] = s->current_picture.f.mb_type[left_xy[LBOT]];
+
+ if(FMO){
+ if(h->slice_table[topleft_xy ] != h->slice_num) h->topleft_type = 0;
+ if(h->slice_table[top_xy ] != h->slice_num) h->top_type = 0;
+ if(h->slice_table[left_xy[LTOP] ] != h->slice_num) h->left_type[LTOP] = h->left_type[LBOT] = 0;
+ }else{
+ if(h->slice_table[topleft_xy ] != h->slice_num){
+ h->topleft_type = 0;
+ if(h->slice_table[top_xy ] != h->slice_num) h->top_type = 0;
+ if(h->slice_table[left_xy[LTOP] ] != h->slice_num) h->left_type[LTOP] = h->left_type[LBOT] = 0;
+ }
+ }
+ if(h->slice_table[topright_xy] != h->slice_num) h->topright_type= 0;
+}
+
+static void fill_decode_caches(H264Context *h, int mb_type){
+ MpegEncContext * const s = &h->s;
+ int topleft_xy, top_xy, topright_xy, left_xy[LEFT_MBS];
+ int topleft_type, top_type, topright_type, left_type[LEFT_MBS];
+ const uint8_t * left_block= h->left_block;
+ int i;
+ uint8_t *nnz;
+ uint8_t *nnz_cache;
+
+ topleft_xy = h->topleft_mb_xy;
+ top_xy = h->top_mb_xy;
+ topright_xy = h->topright_mb_xy;
+ left_xy[LTOP] = h->left_mb_xy[LTOP];
+ left_xy[LBOT] = h->left_mb_xy[LBOT];
+ topleft_type = h->topleft_type;
+ top_type = h->top_type;
+ topright_type = h->topright_type;
+ left_type[LTOP]= h->left_type[LTOP];
+ left_type[LBOT]= h->left_type[LBOT];
+
+ if(!IS_SKIP(mb_type)){
+ if(IS_INTRA(mb_type)){
+ int type_mask= h->pps.constrained_intra_pred ? IS_INTRA(-1) : -1;
+ h->topleft_samples_available=
+ h->top_samples_available=
+ h->left_samples_available= 0xFFFF;
+ h->topright_samples_available= 0xEEEA;
+
+ if(!(top_type & type_mask)){
+ h->topleft_samples_available= 0xB3FF;
+ h->top_samples_available= 0x33FF;
+ h->topright_samples_available= 0x26EA;
+ }
+ if(IS_INTERLACED(mb_type) != IS_INTERLACED(left_type[LTOP])){
+ if(IS_INTERLACED(mb_type)){
+ if(!(left_type[LTOP] & type_mask)){
+ h->topleft_samples_available&= 0xDFFF;
+ h->left_samples_available&= 0x5FFF;
+ }
+ if(!(left_type[LBOT] & type_mask)){
+ h->topleft_samples_available&= 0xFF5F;
+ h->left_samples_available&= 0xFF5F;
+ }
+ }else{
+ int left_typei = s->current_picture.f.mb_type[left_xy[LTOP] + s->mb_stride];
+
+ assert(left_xy[LTOP] == left_xy[LBOT]);
+ if(!((left_typei & type_mask) && (left_type[LTOP] & type_mask))){
+ h->topleft_samples_available&= 0xDF5F;
+ h->left_samples_available&= 0x5F5F;
+ }
+ }
+ }else{
+ if(!(left_type[LTOP] & type_mask)){
+ h->topleft_samples_available&= 0xDF5F;
+ h->left_samples_available&= 0x5F5F;
+ }
+ }
+
+ if(!(topleft_type & type_mask))
+ h->topleft_samples_available&= 0x7FFF;
+
+ if(!(topright_type & type_mask))
+ h->topright_samples_available&= 0xFBFF;
+
+ if(IS_INTRA4x4(mb_type)){
+ if(IS_INTRA4x4(top_type)){
+ AV_COPY32(h->intra4x4_pred_mode_cache+4+8*0, h->intra4x4_pred_mode + h->mb2br_xy[top_xy]);
+ }else{
+ h->intra4x4_pred_mode_cache[4+8*0]=
+ h->intra4x4_pred_mode_cache[5+8*0]=
+ h->intra4x4_pred_mode_cache[6+8*0]=
+ h->intra4x4_pred_mode_cache[7+8*0]= 2 - 3*!(top_type & type_mask);
+ }
+ for(i=0; i<2; i++){
+ if(IS_INTRA4x4(left_type[LEFT(i)])){
+ int8_t *mode= h->intra4x4_pred_mode + h->mb2br_xy[left_xy[LEFT(i)]];
+ h->intra4x4_pred_mode_cache[3+8*1 + 2*8*i]= mode[6-left_block[0+2*i]];
+ h->intra4x4_pred_mode_cache[3+8*2 + 2*8*i]= mode[6-left_block[1+2*i]];
+ }else{
+ h->intra4x4_pred_mode_cache[3+8*1 + 2*8*i]=
+ h->intra4x4_pred_mode_cache[3+8*2 + 2*8*i]= 2 - 3*!(left_type[LEFT(i)] & type_mask);
+ }
+ }
+ }
+ }
+
+
+/*
+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)
+ nnz_cache = h->non_zero_count_cache;
+ if(top_type){
+ nnz = h->non_zero_count[top_xy];
+ AV_COPY32(&nnz_cache[4+8* 0], &nnz[4*3]);
+ if(!s->chroma_y_shift){
+ AV_COPY32(&nnz_cache[4+8* 5], &nnz[4* 7]);
+ AV_COPY32(&nnz_cache[4+8*10], &nnz[4*11]);
+ }else{
+ AV_COPY32(&nnz_cache[4+8* 5], &nnz[4* 5]);
+ AV_COPY32(&nnz_cache[4+8*10], &nnz[4* 9]);
+ }
+ }else{
+ uint32_t top_empty = CABAC && !IS_INTRA(mb_type) ? 0 : 0x40404040;
+ AV_WN32A(&nnz_cache[4+8* 0], top_empty);
+ AV_WN32A(&nnz_cache[4+8* 5], top_empty);
+ AV_WN32A(&nnz_cache[4+8*10], top_empty);
+ }
+
+ for (i=0; i<2; i++) {
+ if(left_type[LEFT(i)]){
+ nnz = h->non_zero_count[left_xy[LEFT(i)]];
+ nnz_cache[3+8* 1 + 2*8*i]= nnz[left_block[8+0+2*i]];
+ nnz_cache[3+8* 2 + 2*8*i]= nnz[left_block[8+1+2*i]];
+ if(CHROMA444){
+ nnz_cache[3+8* 6 + 2*8*i]= nnz[left_block[8+0+2*i]+4*4];
+ nnz_cache[3+8* 7 + 2*8*i]= nnz[left_block[8+1+2*i]+4*4];
+ nnz_cache[3+8*11 + 2*8*i]= nnz[left_block[8+0+2*i]+8*4];
+ nnz_cache[3+8*12 + 2*8*i]= nnz[left_block[8+1+2*i]+8*4];
+ }else if(CHROMA422) {
+ nnz_cache[3+8* 6 + 2*8*i]= nnz[left_block[8+0+2*i]-2+4*4];
+ nnz_cache[3+8* 7 + 2*8*i]= nnz[left_block[8+1+2*i]-2+4*4];
+ nnz_cache[3+8*11 + 2*8*i]= nnz[left_block[8+0+2*i]-2+8*4];
+ nnz_cache[3+8*12 + 2*8*i]= nnz[left_block[8+1+2*i]-2+8*4];
+ }else{
+ nnz_cache[3+8* 6 + 8*i]= nnz[left_block[8+4+2*i]];
+ nnz_cache[3+8*11 + 8*i]= nnz[left_block[8+5+2*i]];
+ }
+ }else{
+ nnz_cache[3+8* 1 + 2*8*i]=
+ nnz_cache[3+8* 2 + 2*8*i]=
+ nnz_cache[3+8* 6 + 2*8*i]=
+ nnz_cache[3+8* 7 + 2*8*i]=
+ nnz_cache[3+8*11 + 2*8*i]=
+ nnz_cache[3+8*12 + 2*8*i]= CABAC && !IS_INTRA(mb_type) ? 0 : 64;
+ }
+ }
+
+ if( CABAC ) {
+ // top_cbp
+ if(top_type) {
+ h->top_cbp = h->cbp_table[top_xy];
+ } else {
+ h->top_cbp = IS_INTRA(mb_type) ? 0x7CF : 0x00F;
+ }
+ // left_cbp
+ if (left_type[LTOP]) {
+ h->left_cbp = (h->cbp_table[left_xy[LTOP]] & 0x7F0)
+ | ((h->cbp_table[left_xy[LTOP]]>>(left_block[0]&(~1)))&2)
+ | (((h->cbp_table[left_xy[LBOT]]>>(left_block[2]&(~1)))&2) << 2);
+ } else {
+ h->left_cbp = IS_INTRA(mb_type) ? 0x7CF : 0x00F;
+ }
+ }
+ }
+
+ if(IS_INTER(mb_type) || (IS_DIRECT(mb_type) && h->direct_spatial_mv_pred)){
+ int list;
+ int b_stride = h->b_stride;
+ for(list=0; list<h->list_count; list++){
+ int8_t *ref_cache = &h->ref_cache[list][scan8[0]];
+ int8_t *ref = s->current_picture.f.ref_index[list];
+ int16_t (*mv_cache)[2] = &h->mv_cache[list][scan8[0]];
+ int16_t (*mv)[2] = s->current_picture.f.motion_val[list];
+ if(!USES_LIST(mb_type, list)){
+ continue;
+ }
+ assert(!(IS_DIRECT(mb_type) && !h->direct_spatial_mv_pred));
+
+ if(USES_LIST(top_type, list)){
+ const int b_xy= h->mb2b_xy[top_xy] + 3*b_stride;
+ AV_COPY128(mv_cache[0 - 1*8], mv[b_xy + 0]);
+ ref_cache[0 - 1*8]=
+ ref_cache[1 - 1*8]= ref[4*top_xy + 2];
+ ref_cache[2 - 1*8]=
+ ref_cache[3 - 1*8]= ref[4*top_xy + 3];
+ }else{
+ AV_ZERO128(mv_cache[0 - 1*8]);
+ AV_WN32A(&ref_cache[0 - 1*8], ((top_type ? LIST_NOT_USED : PART_NOT_AVAILABLE)&0xFF)*0x01010101u);
+ }
+
+ if(mb_type & (MB_TYPE_16x8|MB_TYPE_8x8)){
+ for(i=0; i<2; i++){
+ int cache_idx = -1 + i*2*8;
+ if(USES_LIST(left_type[LEFT(i)], list)){
+ const int b_xy= h->mb2b_xy[left_xy[LEFT(i)]] + 3;
+ const int b8_xy= 4*left_xy[LEFT(i)] + 1;
+ AV_COPY32(mv_cache[cache_idx ], mv[b_xy + b_stride*left_block[0+i*2]]);
+ AV_COPY32(mv_cache[cache_idx+8], mv[b_xy + b_stride*left_block[1+i*2]]);
+ ref_cache[cache_idx ]= ref[b8_xy + (left_block[0+i*2]&~1)];
+ ref_cache[cache_idx+8]= ref[b8_xy + (left_block[1+i*2]&~1)];
+ }else{
+ AV_ZERO32(mv_cache[cache_idx ]);
+ AV_ZERO32(mv_cache[cache_idx+8]);
+ ref_cache[cache_idx ]=
+ ref_cache[cache_idx+8]= (left_type[LEFT(i)]) ? LIST_NOT_USED : PART_NOT_AVAILABLE;
+ }
+ }
+ }else{
+ if(USES_LIST(left_type[LTOP], list)){
+ const int b_xy= h->mb2b_xy[left_xy[LTOP]] + 3;
+ const int b8_xy= 4*left_xy[LTOP] + 1;
+ AV_COPY32(mv_cache[-1], mv[b_xy + b_stride*left_block[0]]);
+ ref_cache[-1]= ref[b8_xy + (left_block[0]&~1)];
+ }else{
+ AV_ZERO32(mv_cache[-1]);
+ ref_cache[-1]= left_type[LTOP] ? LIST_NOT_USED : PART_NOT_AVAILABLE;
+ }
+ }
+
+ if(USES_LIST(topright_type, list)){
+ const int b_xy= h->mb2b_xy[topright_xy] + 3*b_stride;
+ AV_COPY32(mv_cache[4 - 1*8], mv[b_xy]);
+ ref_cache[4 - 1*8]= ref[4*topright_xy + 2];
+ }else{
+ AV_ZERO32(mv_cache[4 - 1*8]);
+ ref_cache[4 - 1*8]= topright_type ? LIST_NOT_USED : PART_NOT_AVAILABLE;
+ }
+ if(ref_cache[4 - 1*8] < 0){
+ if(USES_LIST(topleft_type, list)){
+ const int b_xy = h->mb2b_xy[topleft_xy] + 3 + b_stride + (h->topleft_partition & 2*b_stride);
+ const int b8_xy= 4*topleft_xy + 1 + (h->topleft_partition & 2);
+ AV_COPY32(mv_cache[-1 - 1*8], mv[b_xy]);
+ ref_cache[-1 - 1*8]= ref[b8_xy];
+ }else{
+ AV_ZERO32(mv_cache[-1 - 1*8]);
+ ref_cache[-1 - 1*8]= topleft_type ? LIST_NOT_USED : PART_NOT_AVAILABLE;
+ }
+ }
+
+ if((mb_type&(MB_TYPE_SKIP|MB_TYPE_DIRECT2)) && !FRAME_MBAFF)
+ continue;
+
+ if(!(mb_type&(MB_TYPE_SKIP|MB_TYPE_DIRECT2))){
+ uint8_t (*mvd_cache)[2] = &h->mvd_cache[list][scan8[0]];
+ uint8_t (*mvd)[2] = h->mvd_table[list];
+ ref_cache[2+8*0] =
+ ref_cache[2+8*2] = PART_NOT_AVAILABLE;
+ AV_ZERO32(mv_cache[2+8*0]);
+ AV_ZERO32(mv_cache[2+8*2]);
+
+ if( CABAC ) {
+ if(USES_LIST(top_type, list)){
+ const int b_xy= h->mb2br_xy[top_xy];
+ AV_COPY64(mvd_cache[0 - 1*8], mvd[b_xy + 0]);
+ }else{
+ AV_ZERO64(mvd_cache[0 - 1*8]);
+ }
+ if(USES_LIST(left_type[LTOP], list)){
+ const int b_xy= h->mb2br_xy[left_xy[LTOP]] + 6;
+ AV_COPY16(mvd_cache[-1 + 0*8], mvd[b_xy - left_block[0]]);
+ AV_COPY16(mvd_cache[-1 + 1*8], mvd[b_xy - left_block[1]]);
+ }else{
+ AV_ZERO16(mvd_cache[-1 + 0*8]);
+ AV_ZERO16(mvd_cache[-1 + 1*8]);
+ }
+ if(USES_LIST(left_type[LBOT], list)){
+ const int b_xy= h->mb2br_xy[left_xy[LBOT]] + 6;
+ AV_COPY16(mvd_cache[-1 + 2*8], mvd[b_xy - left_block[2]]);
+ AV_COPY16(mvd_cache[-1 + 3*8], mvd[b_xy - left_block[3]]);
+ }else{
+ AV_ZERO16(mvd_cache[-1 + 2*8]);
+ AV_ZERO16(mvd_cache[-1 + 3*8]);
+ }
+ AV_ZERO16(mvd_cache[2+8*0]);
+ AV_ZERO16(mvd_cache[2+8*2]);
+ if(h->slice_type_nos == AV_PICTURE_TYPE_B){
+ uint8_t *direct_cache = &h->direct_cache[scan8[0]];
+ uint8_t *direct_table = h->direct_table;
+ fill_rectangle(direct_cache, 4, 4, 8, MB_TYPE_16x16>>1, 1);
+
+ if(IS_DIRECT(top_type)){
+ AV_WN32A(&direct_cache[-1*8], 0x01010101u*(MB_TYPE_DIRECT2>>1));
+ }else if(IS_8X8(top_type)){
+ int b8_xy = 4*top_xy;
+ direct_cache[0 - 1*8]= direct_table[b8_xy + 2];
+ direct_cache[2 - 1*8]= direct_table[b8_xy + 3];
+ }else{
+ AV_WN32A(&direct_cache[-1*8], 0x01010101*(MB_TYPE_16x16>>1));
+ }
+
+ if(IS_DIRECT(left_type[LTOP]))
+ direct_cache[-1 + 0*8]= MB_TYPE_DIRECT2>>1;
+ else if(IS_8X8(left_type[LTOP]))
+ direct_cache[-1 + 0*8]= direct_table[4*left_xy[LTOP] + 1 + (left_block[0]&~1)];
+ else
+ direct_cache[-1 + 0*8]= MB_TYPE_16x16>>1;
+
+ if(IS_DIRECT(left_type[LBOT]))
+ direct_cache[-1 + 2*8]= MB_TYPE_DIRECT2>>1;
+ else if(IS_8X8(left_type[LBOT]))
+ direct_cache[-1 + 2*8]= direct_table[4*left_xy[LBOT] + 1 + (left_block[2]&~1)];
+ else
+ direct_cache[-1 + 2*8]= MB_TYPE_16x16>>1;
+ }
+ }
+ }
+ if(FRAME_MBAFF){
+#define MAP_MVS\
+ MAP_F2F(scan8[0] - 1 - 1*8, topleft_type)\
+ MAP_F2F(scan8[0] + 0 - 1*8, top_type)\
+ MAP_F2F(scan8[0] + 1 - 1*8, top_type)\
+ MAP_F2F(scan8[0] + 2 - 1*8, top_type)\
+ MAP_F2F(scan8[0] + 3 - 1*8, top_type)\
+ MAP_F2F(scan8[0] + 4 - 1*8, topright_type)\
+ MAP_F2F(scan8[0] - 1 + 0*8, left_type[LTOP])\
+ MAP_F2F(scan8[0] - 1 + 1*8, left_type[LTOP])\
+ MAP_F2F(scan8[0] - 1 + 2*8, left_type[LBOT])\
+ MAP_F2F(scan8[0] - 1 + 3*8, left_type[LBOT])
+ if(MB_FIELD){
+#define MAP_F2F(idx, mb_type)\
+ if(!IS_INTERLACED(mb_type) && h->ref_cache[list][idx] >= 0){\
+ h->ref_cache[list][idx] <<= 1;\
+ h->mv_cache[list][idx][1] /= 2;\
+ h->mvd_cache[list][idx][1] >>=1;\
+ }
+ MAP_MVS
+#undef MAP_F2F
+ }else{
+#define MAP_F2F(idx, mb_type)\
+ if(IS_INTERLACED(mb_type) && h->ref_cache[list][idx] >= 0){\
+ h->ref_cache[list][idx] >>= 1;\
+ h->mv_cache[list][idx][1] <<= 1;\
+ h->mvd_cache[list][idx][1] <<= 1;\
+ }
+ MAP_MVS
+#undef MAP_F2F
+ }
+ }
+ }
+ }
+
+ h->neighbor_transform_size= !!IS_8x8DCT(top_type) + !!IS_8x8DCT(left_type[LTOP]);
+}
+
+/**
+ * decodes a P_SKIP or B_SKIP macroblock
+ */
+static void av_unused decode_mb_skip(H264Context *h){
+ MpegEncContext * const s = &h->s;
+ const int mb_xy= h->mb_xy;
+ int mb_type=0;
+
+ memset(h->non_zero_count[mb_xy], 0, 48);
+
+ if(MB_FIELD)
+ mb_type|= MB_TYPE_INTERLACED;
+
+ if( h->slice_type_nos == AV_PICTURE_TYPE_B )
+ {
+ // just for fill_caches. pred_direct_motion will set the real mb_type
+ mb_type|= MB_TYPE_L0L1|MB_TYPE_DIRECT2|MB_TYPE_SKIP;
+ if(h->direct_spatial_mv_pred){
+ fill_decode_neighbors(h, mb_type);
+ fill_decode_caches(h, mb_type); //FIXME check what is needed and what not ...
+ }
+ ff_h264_pred_direct_motion(h, &mb_type);
+ mb_type|= MB_TYPE_SKIP;
+ }
+ else
+ {
+ mb_type|= MB_TYPE_16x16|MB_TYPE_P0L0|MB_TYPE_P1L0|MB_TYPE_SKIP;
+
+ fill_decode_neighbors(h, mb_type);
+ pred_pskip_motion(h);
+ }
+
+ write_back_motion(h, mb_type);
+ s->current_picture.f.mb_type[mb_xy] = mb_type;
+ s->current_picture.f.qscale_table[mb_xy] = s->qscale;
+ h->slice_table[ mb_xy ]= h->slice_num;
+ h->prev_mb_skipped= 1;
}
#endif /* AVCODEC_H264_MVPRED_H */
projects / ffmpeg / blobdiff