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Diffstat (limited to 'ffmpeg/libavcodec/h264_direct.c')
-rw-r--r--ffmpeg/libavcodec/h264_direct.c628
1 files changed, 628 insertions, 0 deletions
diff --git a/ffmpeg/libavcodec/h264_direct.c b/ffmpeg/libavcodec/h264_direct.c
new file mode 100644
index 0000000..2f49d0a
--- /dev/null
+++ b/ffmpeg/libavcodec/h264_direct.c
@@ -0,0 +1,628 @@
+/*
+ * H.26L/H.264/AVC/JVT/14496-10/... direct mb/block decoding
+ * Copyright (c) 2003 Michael Niedermayer <michaelni@gmx.at>
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg 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,
+ * 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
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+/**
+ * @file
+ * H.264 / AVC / MPEG4 part10 direct mb/block decoding.
+ * @author Michael Niedermayer <michaelni@gmx.at>
+ */
+
+#include "internal.h"
+#include "avcodec.h"
+#include "mpegvideo.h"
+#include "h264.h"
+#include "rectangle.h"
+#include "thread.h"
+
+//#undef NDEBUG
+#include <assert.h>
+
+
+static int get_scale_factor(H264Context * const h, int poc, int poc1, int i){
+ int poc0 = h->ref_list[0][i].poc;
+ int td = av_clip(poc1 - poc0, -128, 127);
+ if(td == 0 || h->ref_list[0][i].long_ref){
+ return 256;
+ }else{
+ int tb = av_clip(poc - poc0, -128, 127);
+ int tx = (16384 + (FFABS(td) >> 1)) / td;
+ return av_clip((tb*tx + 32) >> 6, -1024, 1023);
+ }
+}
+
+void ff_h264_direct_dist_scale_factor(H264Context * const h){
+ const int poc = h->cur_pic_ptr->field_poc[h->picture_structure == PICT_BOTTOM_FIELD];
+ const int poc1 = h->ref_list[1][0].poc;
+ int i, field;
+
+ if (FRAME_MBAFF(h))
+ for (field = 0; field < 2; field++){
+ const int poc = h->cur_pic_ptr->field_poc[field];
+ const int poc1 = h->ref_list[1][0].field_poc[field];
+ for (i = 0; i < 2 * h->ref_count[0]; i++)
+ h->dist_scale_factor_field[field][i^field] =
+ get_scale_factor(h, poc, poc1, i+16);
+ }
+
+ for (i = 0; i < h->ref_count[0]; i++){
+ h->dist_scale_factor[i] = get_scale_factor(h, poc, poc1, i);
+ }
+}
+
+static void fill_colmap(H264Context *h, int map[2][16+32], int list, int field, int colfield, int mbafi){
+ Picture * const ref1 = &h->ref_list[1][0];
+ int j, old_ref, rfield;
+ int start= mbafi ? 16 : 0;
+ int end = mbafi ? 16+2*h->ref_count[0] : h->ref_count[0];
+ int interl= mbafi || h->picture_structure != PICT_FRAME;
+
+ /* bogus; fills in for missing frames */
+ memset(map[list], 0, sizeof(map[list]));
+
+ for(rfield=0; rfield<2; rfield++){
+ for(old_ref=0; old_ref<ref1->ref_count[colfield][list]; old_ref++){
+ int poc = ref1->ref_poc[colfield][list][old_ref];
+
+ if (!interl)
+ poc |= 3;
+ else if( interl && (poc&3) == 3) // FIXME: store all MBAFF references so this is not needed
+ poc= (poc&~3) + rfield + 1;
+
+ for(j=start; j<end; j++){
+ if (4 * h->ref_list[0][j].frame_num + (h->ref_list[0][j].reference & 3) == poc) {
+ int cur_ref= mbafi ? (j-16)^field : j;
+ if (ref1->mbaff)
+ map[list][2 * old_ref + (rfield^field) + 16] = cur_ref;
+ if(rfield == field || !interl)
+ map[list][old_ref] = cur_ref;
+ break;
+ }
+ }
+ }
+ }
+}
+
+void ff_h264_direct_ref_list_init(H264Context * const h){
+ Picture * const ref1 = &h->ref_list[1][0];
+ Picture * const cur = h->cur_pic_ptr;
+ int list, j, field;
+ int sidx= (h->picture_structure&1)^1;
+ int ref1sidx = (ref1->reference&1)^1;
+
+ for(list=0; list<2; list++){
+ cur->ref_count[sidx][list] = h->ref_count[list];
+ for(j=0; j<h->ref_count[list]; j++)
+ cur->ref_poc[sidx][list][j] = 4 * h->ref_list[list][j].frame_num + (h->ref_list[list][j].reference & 3);
+ }
+
+ if(h->picture_structure == PICT_FRAME){
+ memcpy(cur->ref_count[1], cur->ref_count[0], sizeof(cur->ref_count[0]));
+ memcpy(cur->ref_poc [1], cur->ref_poc [0], sizeof(cur->ref_poc [0]));
+ }
+
+ cur->mbaff = FRAME_MBAFF(h);
+
+ h->col_fieldoff= 0;
+ if(h->picture_structure == PICT_FRAME){
+ int cur_poc = h->cur_pic_ptr->poc;
+ int *col_poc = h->ref_list[1]->field_poc;
+ h->col_parity= (FFABS(col_poc[0] - cur_poc) >= FFABS(col_poc[1] - cur_poc));
+ ref1sidx=sidx= h->col_parity;
+ } else if (!(h->picture_structure & h->ref_list[1][0].reference) && !h->ref_list[1][0].mbaff) { // FL -> FL & differ parity
+ h->col_fieldoff = 2 * h->ref_list[1][0].reference - 3;
+ }
+
+ if (h->slice_type_nos != AV_PICTURE_TYPE_B || h->direct_spatial_mv_pred)
+ return;
+
+ for(list=0; list<2; list++){
+ fill_colmap(h, h->map_col_to_list0, list, sidx, ref1sidx, 0);
+ if (FRAME_MBAFF(h))
+ for(field=0; field<2; field++)
+ fill_colmap(h, h->map_col_to_list0_field[field], list, field, field, 1);
+ }
+}
+
+static void await_reference_mb_row(H264Context * const h, Picture *ref, int mb_y)
+{
+ int ref_field = ref->reference - 1;
+ int ref_field_picture = ref->field_picture;
+ int ref_height = 16*h->mb_height >> ref_field_picture;
+
+ if(!HAVE_THREADS || !(h->avctx->active_thread_type&FF_THREAD_FRAME))
+ return;
+
+ //FIXME it can be safe to access mb stuff
+ //even if pixels aren't deblocked yet
+
+ ff_thread_await_progress(&ref->tf,
+ FFMIN(16 * mb_y >> ref_field_picture, ref_height - 1),
+ ref_field_picture && ref_field);
+}
+
+static void pred_spatial_direct_motion(H264Context * const h, int *mb_type){
+ int b8_stride = 2;
+ int b4_stride = h->b_stride;
+ int mb_xy = h->mb_xy, mb_y = h->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].reference & 3);
+
+ await_reference_mb_row(h, &h->ref_list[1][0], h->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].mb_type[mb_xy])) { // AFL/AFR/FR/FL -> AFL/FL
+ if (!IS_INTERLACED(*mb_type)) { // AFR/FR -> AFL/FL
+ mb_y = (h->mb_y&~1) + h->col_parity;
+ mb_xy= h->mb_x + ((h->mb_y&~1) + h->col_parity)*h->mb_stride;
+ b8_stride = 0;
+ }else{
+ mb_y += h->col_fieldoff;
+ mb_xy += h->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 = h->mb_y&~1;
+ mb_xy= h->mb_x + (h->mb_y&~1)*h->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 + h->mb_stride];
+ b8_stride = 2+4*h->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].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 = (void*)&h->ref_list[1][0].motion_val[0][h->mb2b_xy [mb_xy]];
+ l1mv1 = (void*)&h->ref_list[1][0].motion_val[1][h->mb2b_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(h->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)){
+ int a,b;
+
+ 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);
+ if(!IS_INTRA(mb_type_col[0]) && !h->ref_list[1][0].long_ref
+ && ( (l1ref0[0] == 0 && FFABS(l1mv0[0][0]) <= 1 && FFABS(l1mv0[0][1]) <= 1)
+ || (l1ref0[0] < 0 && l1ref1[0] == 0 && FFABS(l1mv1[0][0]) <= 1 && FFABS(l1mv1[0][1]) <= 1
+ && h->x264_build>33U))){
+ a=b=0;
+ if(ref[0] > 0)
+ a= mv[0];
+ if(ref[1] > 0)
+ b= mv[1];
+ }else{
+ a= mv[0];
+ b= mv[1];
+ }
+ fill_rectangle(&h->mv_cache[0][scan8[0]], 4, 4, 8, a, 4);
+ fill_rectangle(&h->mv_cache[1][scan8[0]], 4, 4, 8, b, 4);
+ }else{
+ int n=0;
+ for(i8=0; i8<4; i8++){
+ const int x8 = i8&1;
+ const int y8 = i8>>1;
+
+ if(is_b8x8 && !IS_DIRECT(h->sub_mb_type[i8]))
+ continue;
+ h->sub_mb_type[i8] = sub_mb_type;
+
+ fill_rectangle(&h->mv_cache[0][scan8[i8*4]], 2, 2, 8, mv[0], 4);
+ fill_rectangle(&h->mv_cache[1][scan8[i8*4]], 2, 2, 8, mv[1], 4);
+ 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[i8] == 0
+ || (l1ref0[i8] < 0 && l1ref1[i8] == 0
+ && h->x264_build>33U))){
+ 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){
+ if(ref[0] == 0)
+ fill_rectangle(&h->mv_cache[0][scan8[i8*4]], 2, 2, 8, 0, 4);
+ if(ref[1] == 0)
+ fill_rectangle(&h->mv_cache[1][scan8[i8*4]], 2, 2, 8, 0, 4);
+ n+=4;
+ }
+ }else{
+ int m=0;
+ for(i4=0; i4<4; i4++){
+ 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)
+ AV_ZERO32(h->mv_cache[0][scan8[i8*4+i4]]);
+ if(ref[1] == 0)
+ AV_ZERO32(h->mv_cache[1][scan8[i8*4+i4]]);
+ m++;
+ }
+ }
+ if(!(m&3))
+ h->sub_mb_type[i8]+= MB_TYPE_16x16 - MB_TYPE_8x8;
+ n+=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){
+ int b8_stride = 2;
+ int b4_stride = h->b_stride;
+ int mb_xy = h->mb_xy, mb_y = h->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;
+ int i8, i4;
+
+ assert(h->ref_list[1][0].reference & 3);
+
+ await_reference_mb_row(h, &h->ref_list[1][0], h->mb_y + !!IS_INTERLACED(*mb_type));
+
+ 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_y = (h->mb_y&~1) + h->col_parity;
+ mb_xy= h->mb_x + ((h->mb_y&~1) + h->col_parity)*h->mb_stride;
+ b8_stride = 0;
+ }else{
+ mb_y += h->col_fieldoff;
+ mb_xy += h->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 = h->mb_y&~1;
+ mb_xy= h->mb_x + (h->mb_y&~1)*h->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 + h->mb_stride];
+ b8_stride = 2+4*h->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_P0L0|MB_TYPE_P0L1|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 */
+ }else{
+ *mb_type |= MB_TYPE_8x8|MB_TYPE_L0L1;
+ }
+ }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 */
+ 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 */
+ }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));
+ }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 */
+ }
+ *mb_type |= MB_TYPE_8x8|MB_TYPE_L0L1;
+ }
+ }
+ }
+
+ await_reference_mb_row(h, &h->ref_list[1][0], mb_y);
+
+ l1mv0 = (void*)&h->ref_list[1][0].motion_val[0][h->mb2b_xy [mb_xy]];
+ l1mv1 = (void*)&h->ref_list[1][0].motion_val[1][h->mb2b_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(h->mb_y&1){
+ l1ref0 += 2;
+ l1ref1 += 2;
+ l1mv0 += 2*b4_stride;
+ l1mv1 += 2*b4_stride;
+ }
+ }
+
+ {
+ const int *map_col_to_list0[2] = {h->map_col_to_list0[0], h->map_col_to_list0[1]};
+ const int *dist_scale_factor = h->dist_scale_factor;
+ int ref_offset;
+
+ if (FRAME_MBAFF(h) && IS_INTERLACED(*mb_type)) {
+ map_col_to_list0[0] = h->map_col_to_list0_field[h->mb_y&1][0];
+ map_col_to_list0[1] = h->map_col_to_list0_field[h->mb_y&1][1];
+ dist_scale_factor =h->dist_scale_factor_field[h->mb_y&1];
+ }
+ ref_offset = (h->ref_list[1][0].mbaff<<4) & (mb_type_col[0]>>3); //if(h->ref_list[1][0].mbaff && IS_INTERLACED(mb_type_col[0])) ref_offset=16 else 0
+
+ if(IS_INTERLACED(*mb_type) != IS_INTERLACED(mb_type_col[0])){
+ int y_shift = 2*!IS_INTERLACED(*mb_type);
+ assert(h->sps.direct_8x8_inference_flag);
+
+ for(i8=0; i8<4; i8++){
+ const int x8 = i8&1;
+ const int y8 = i8>>1;
+ int ref0, scale;
+ const int16_t (*l1mv)[2]= l1mv0;
+
+ if(is_b8x8 && !IS_DIRECT(h->sub_mb_type[i8]))
+ continue;
+ h->sub_mb_type[i8] = sub_mb_type;
+
+ fill_rectangle(&h->ref_cache[1][scan8[i8*4]], 2, 2, 8, 0, 1);
+ if(IS_INTRA(mb_type_col[y8])){
+ fill_rectangle(&h->ref_cache[0][scan8[i8*4]], 2, 2, 8, 0, 1);
+ fill_rectangle(&h-> mv_cache[0][scan8[i8*4]], 2, 2, 8, 0, 4);
+ fill_rectangle(&h-> mv_cache[1][scan8[i8*4]], 2, 2, 8, 0, 4);
+ continue;
+ }
+
+ ref0 = l1ref0[x8 + y8*b8_stride];
+ 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];
+ l1mv= l1mv1;
+ }
+ scale = dist_scale_factor[ref0];
+ fill_rectangle(&h->ref_cache[0][scan8[i8*4]], 2, 2, 8, ref0, 1);
+
+ {
+ const int16_t *mv_col = l1mv[x8*3 + y8*b4_stride];
+ int my_col = (mv_col[1]<<y_shift)/2;
+ int mx = (scale * mv_col[0] + 128) >> 8;
+ int my = (scale * my_col + 128) >> 8;
+ fill_rectangle(&h->mv_cache[0][scan8[i8*4]], 2, 2, 8, pack16to32(mx,my), 4);
+ fill_rectangle(&h->mv_cache[1][scan8[i8*4]], 2, 2, 8, pack16to32(mx-mv_col[0],my-my_col), 4);
+ }
+ }
+ return;
+ }
+
+ /* one-to-one mv scaling */
+
+ if(IS_16X16(*mb_type)){
+ int ref, mv0, mv1;
+
+ fill_rectangle(&h->ref_cache[1][scan8[0]], 4, 4, 8, 0, 1);
+ if(IS_INTRA(mb_type_col[0])){
+ ref=mv0=mv1=0;
+ }else{
+ const int ref0 = l1ref0[0] >= 0 ? map_col_to_list0[0][l1ref0[0] + ref_offset]
+ : map_col_to_list0[1][l1ref1[0] + ref_offset];
+ const int scale = dist_scale_factor[ref0];
+ const int16_t *mv_col = l1ref0[0] >= 0 ? l1mv0[0] : l1mv1[0];
+ int mv_l0[2];
+ mv_l0[0] = (scale * mv_col[0] + 128) >> 8;
+ mv_l0[1] = (scale * mv_col[1] + 128) >> 8;
+ ref= ref0;
+ mv0= pack16to32(mv_l0[0],mv_l0[1]);
+ mv1= pack16to32(mv_l0[0]-mv_col[0],mv_l0[1]-mv_col[1]);
+ }
+ fill_rectangle(&h->ref_cache[0][scan8[0]], 4, 4, 8, ref, 1);
+ fill_rectangle(&h-> mv_cache[0][scan8[0]], 4, 4, 8, mv0, 4);
+ fill_rectangle(&h-> mv_cache[1][scan8[0]], 4, 4, 8, mv1, 4);
+ }else{
+ for(i8=0; i8<4; i8++){
+ const int x8 = i8&1;
+ const int y8 = i8>>1;
+ int ref0, scale;
+ const int16_t (*l1mv)[2]= l1mv0;
+
+ if(is_b8x8 && !IS_DIRECT(h->sub_mb_type[i8]))
+ continue;
+ h->sub_mb_type[i8] = sub_mb_type;
+ fill_rectangle(&h->ref_cache[1][scan8[i8*4]], 2, 2, 8, 0, 1);
+ if(IS_INTRA(mb_type_col[0])){
+ fill_rectangle(&h->ref_cache[0][scan8[i8*4]], 2, 2, 8, 0, 1);
+ fill_rectangle(&h-> mv_cache[0][scan8[i8*4]], 2, 2, 8, 0, 4);
+ fill_rectangle(&h-> mv_cache[1][scan8[i8*4]], 2, 2, 8, 0, 4);
+ continue;
+ }
+
+ 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[i8] + ref_offset];
+ l1mv= l1mv1;
+ }
+ scale = dist_scale_factor[ref0];
+
+ fill_rectangle(&h->ref_cache[0][scan8[i8*4]], 2, 2, 8, ref0, 1);
+ if(IS_SUB_8X8(sub_mb_type)){
+ const int16_t *mv_col = l1mv[x8*3 + y8*3*b4_stride];
+ int mx = (scale * mv_col[0] + 128) >> 8;
+ int my = (scale * mv_col[1] + 128) >> 8;
+ fill_rectangle(&h->mv_cache[0][scan8[i8*4]], 2, 2, 8, pack16to32(mx,my), 4);
+ fill_rectangle(&h->mv_cache[1][scan8[i8*4]], 2, 2, 8, pack16to32(mx-mv_col[0],my-mv_col[1]), 4);
+ }else
+ for(i4=0; i4<4; i4++){
+ const int16_t *mv_col = l1mv[x8*2 + (i4&1) + (y8*2 + (i4>>1))*b4_stride];
+ 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;
+ AV_WN32A(h->mv_cache[1][scan8[i8*4+i4]],
+ pack16to32(mv_l0[0]-mv_col[0],mv_l0[1]-mv_col[1]));
+ }
+ }
+ }
+ }
+}
+
+void ff_h264_pred_direct_motion(H264Context * const h, int *mb_type){
+ if(h->direct_spatial_mv_pred){
+ pred_spatial_direct_motion(h, mb_type);
+ }else{
+ pred_temp_direct_motion(h, mb_type);
+ }
+}
generated by cgit v1.2.3 (git 2.39.1) at 2025-12-06 12:51:26 +0000