| /* |
| * 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 / MPEG-4 part10 direct mb/block decoding. |
| * @author Michael Niedermayer <michaelni@gmx.at> |
| */ |
| |
| #include "internal.h" |
| #include "avcodec.h" |
| #include "h264dec.h" |
| #include "h264_ps.h" |
| #include "mpegutils.h" |
| #include "rectangle.h" |
| #include "thread.h" |
| |
| #include <assert.h> |
| |
| static int get_scale_factor(H264SliceContext *sl, |
| int poc, int poc1, int i) |
| { |
| int poc0 = sl->ref_list[0][i].poc; |
| int64_t pocdiff = poc1 - (int64_t)poc0; |
| int td = av_clip_int8(pocdiff); |
| |
| if (pocdiff != (int)pocdiff) |
| avpriv_request_sample(sl->h264->avctx, "pocdiff overflow\n"); |
| |
| if (td == 0 || sl->ref_list[0][i].parent->long_ref) { |
| return 256; |
| } else { |
| int64_t pocdiff0 = poc - (int64_t)poc0; |
| int tb = av_clip_int8(pocdiff0); |
| int tx = (16384 + (FFABS(td) >> 1)) / td; |
| |
| if (pocdiff0 != (int)pocdiff0) |
| av_log(sl->h264->avctx, AV_LOG_DEBUG, "pocdiff0 overflow\n"); |
| |
| return av_clip_intp2((tb * tx + 32) >> 6, 10); |
| } |
| } |
| |
| void ff_h264_direct_dist_scale_factor(const H264Context *const h, |
| H264SliceContext *sl) |
| { |
| const int poc = FIELD_PICTURE(h) ? h->cur_pic_ptr->field_poc[h->picture_structure == PICT_BOTTOM_FIELD] |
| : h->cur_pic_ptr->poc; |
| const int poc1 = sl->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 = sl->ref_list[1][0].parent->field_poc[field]; |
| for (i = 0; i < 2 * sl->ref_count[0]; i++) |
| sl->dist_scale_factor_field[field][i ^ field] = |
| get_scale_factor(sl, poc, poc1, i + 16); |
| } |
| |
| for (i = 0; i < sl->ref_count[0]; i++) |
| sl->dist_scale_factor[i] = get_scale_factor(sl, poc, poc1, i); |
| } |
| |
| static void fill_colmap(const H264Context *h, H264SliceContext *sl, |
| int map[2][16 + 32], int list, |
| int field, int colfield, int mbafi) |
| { |
| H264Picture *const ref1 = sl->ref_list[1][0].parent; |
| int j, old_ref, rfield; |
| int start = mbafi ? 16 : 0; |
| int end = mbafi ? 16 + 2 * sl->ref_count[0] : sl->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; |
| // FIXME: store all MBAFF references so this is not needed |
| else if (interl && (poc & 3) == 3) |
| poc = (poc & ~3) + rfield + 1; |
| |
| for (j = start; j < end; j++) { |
| if (4 * sl->ref_list[0][j].parent->frame_num + |
| (sl->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(const H264Context *const h, H264SliceContext *sl) |
| { |
| H264Ref *const ref1 = &sl->ref_list[1][0]; |
| H264Picture *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 < sl->list_count; list++) { |
| cur->ref_count[sidx][list] = sl->ref_count[list]; |
| for (j = 0; j < sl->ref_count[list]; j++) |
| cur->ref_poc[sidx][list][j] = 4 * sl->ref_list[list][j].parent->frame_num + |
| (sl->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])); |
| } |
| |
| if (h->current_slice == 0) { |
| cur->mbaff = FRAME_MBAFF(h); |
| } else { |
| av_assert0(cur->mbaff == FRAME_MBAFF(h)); |
| } |
| |
| sl->col_fieldoff = 0; |
| |
| if (sl->list_count != 2 || !sl->ref_count[1]) |
| return; |
| |
| if (h->picture_structure == PICT_FRAME) { |
| int cur_poc = h->cur_pic_ptr->poc; |
| int *col_poc = sl->ref_list[1][0].parent->field_poc; |
| if (col_poc[0] == INT_MAX && col_poc[1] == INT_MAX) { |
| av_log(h->avctx, AV_LOG_ERROR, "co located POCs unavailable\n"); |
| sl->col_parity = 1; |
| } else |
| sl->col_parity = (FFABS(col_poc[0] - cur_poc) >= |
| FFABS(col_poc[1] - cur_poc)); |
| ref1sidx = |
| sidx = sl->col_parity; |
| // FL -> FL & differ parity |
| } else if (!(h->picture_structure & sl->ref_list[1][0].reference) && |
| !sl->ref_list[1][0].parent->mbaff) { |
| sl->col_fieldoff = 2 * sl->ref_list[1][0].reference - 3; |
| } |
| |
| if (sl->slice_type_nos != AV_PICTURE_TYPE_B || sl->direct_spatial_mv_pred) |
| return; |
| |
| for (list = 0; list < 2; list++) { |
| fill_colmap(h, sl, sl->map_col_to_list0, list, sidx, ref1sidx, 0); |
| if (FRAME_MBAFF(h)) |
| for (field = 0; field < 2; field++) |
| fill_colmap(h, sl, sl->map_col_to_list0_field[field], list, field, |
| field, 1); |
| } |
| } |
| |
| static void await_reference_mb_row(const H264Context *const h, H264Ref *ref, |
| int mb_y) |
| { |
| int ref_field = ref->reference - 1; |
| int ref_field_picture = ref->parent->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->parent->tf, |
| FFMIN(16 * mb_y >> ref_field_picture, |
| ref_height - 1), |
| ref_field_picture && ref_field); |
| } |
| |
| static void pred_spatial_direct_motion(const H264Context *const h, H264SliceContext *sl, |
| int *mb_type) |
| { |
| int b8_stride = 2; |
| int b4_stride = h->b_stride; |
| int mb_xy = sl->mb_xy, mb_y = sl->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(sl->ref_list[1][0].reference & 3); |
| |
| await_reference_mb_row(h, &sl->ref_list[1][0], |
| sl->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 = sl->ref_cache[list][scan8[0] - 1]; |
| int top_ref = sl->ref_cache[list][scan8[0] - 8]; |
| int refc = sl->ref_cache[list][scan8[0] - 8 + 4]; |
| const int16_t *C = sl->mv_cache[list][scan8[0] - 8 + 4]; |
| if (refc == PART_NOT_AVAILABLE) { |
| refc = sl->ref_cache[list][scan8[0] - 8 - 1]; |
| C = sl->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 = sl->mv_cache[list][scan8[0] - 1]; |
| const int16_t *const B = sl->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); |
| } |
| av_assert2(ref[list] < (sl->ref_count[list] << !!FRAME_MBAFF(h))); |
| } 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(&sl->ref_cache[0][scan8[0]], 4, 4, 8, (uint8_t)ref[0], 1); |
| fill_rectangle(&sl->ref_cache[1][scan8[0]], 4, 4, 8, (uint8_t)ref[1], 1); |
| fill_rectangle(&sl->mv_cache[0][scan8[0]], 4, 4, 8, 0, 4); |
| fill_rectangle(&sl->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(sl->ref_list[1][0].parent->mb_type[mb_xy])) { // AFL/AFR/FR/FL -> AFL/FL |
| if (!IS_INTERLACED(*mb_type)) { // AFR/FR -> AFL/FL |
| mb_y = (sl->mb_y & ~1) + sl->col_parity; |
| mb_xy = sl->mb_x + |
| ((sl->mb_y & ~1) + sl->col_parity) * h->mb_stride; |
| b8_stride = 0; |
| } else { |
| mb_y += sl->col_fieldoff; |
| mb_xy += h->mb_stride * sl->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 = sl->mb_y & ~1; |
| mb_xy = (sl->mb_y & ~1) * h->mb_stride + sl->mb_x; |
| mb_type_col[0] = sl->ref_list[1][0].parent->mb_type[mb_xy]; |
| mb_type_col[1] = sl->ref_list[1][0].parent->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] = sl->ref_list[1][0].parent->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->ps.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, &sl->ref_list[1][0], mb_y); |
| |
| l1mv0 = (void*)&sl->ref_list[1][0].parent->motion_val[0][h->mb2b_xy[mb_xy]]; |
| l1mv1 = (void*)&sl->ref_list[1][0].parent->motion_val[1][h->mb2b_xy[mb_xy]]; |
| l1ref0 = &sl->ref_list[1][0].parent->ref_index[0][4 * mb_xy]; |
| l1ref1 = &sl->ref_list[1][0].parent->ref_index[1][4 * mb_xy]; |
| if (!b8_stride) { |
| if (sl->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 = x8 * 3 + y8 * b4_stride; |
| int a, b; |
| |
| if (is_b8x8 && !IS_DIRECT(sl->sub_mb_type[i8])) |
| continue; |
| sl->sub_mb_type[i8] = sub_mb_type; |
| |
| fill_rectangle(&sl->ref_cache[0][scan8[i8 * 4]], 2, 2, 8, |
| (uint8_t)ref[0], 1); |
| fill_rectangle(&sl->ref_cache[1][scan8[i8 * 4]], 2, 2, 8, |
| (uint8_t)ref[1], 1); |
| if (!IS_INTRA(mb_type_col[y8]) && !sl->ref_list[1][0].parent->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(&sl->mv_cache[0][scan8[i8 * 4]], 2, 2, 8, a, 4); |
| fill_rectangle(&sl->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(&sl->ref_cache[0][scan8[0]], 4, 4, 8, (uint8_t)ref[0], 1); |
| fill_rectangle(&sl->ref_cache[1][scan8[0]], 4, 4, 8, (uint8_t)ref[1], 1); |
| if (!IS_INTRA(mb_type_col[0]) && !sl->ref_list[1][0].parent->long_ref && |
| ((l1ref0[0] == 0 && |
| FFABS(l1mv0[0][0]) <= 1 && |
| FFABS(l1mv0[0][1]) <= 1) || |
| (l1ref0[0] < 0 && !l1ref1[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(&sl->mv_cache[0][scan8[0]], 4, 4, 8, a, 4); |
| fill_rectangle(&sl->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(sl->sub_mb_type[i8])) |
| continue; |
| sl->sub_mb_type[i8] = sub_mb_type; |
| |
| fill_rectangle(&sl->mv_cache[0][scan8[i8 * 4]], 2, 2, 8, mv[0], 4); |
| fill_rectangle(&sl->mv_cache[1][scan8[i8 * 4]], 2, 2, 8, mv[1], 4); |
| fill_rectangle(&sl->ref_cache[0][scan8[i8 * 4]], 2, 2, 8, |
| (uint8_t)ref[0], 1); |
| fill_rectangle(&sl->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]) && !sl->ref_list[1][0].parent->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(&sl->mv_cache[0][scan8[i8 * 4]], 2, 2, |
| 8, 0, 4); |
| if (ref[1] == 0) |
| fill_rectangle(&sl->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(sl->mv_cache[0][scan8[i8 * 4 + i4]]); |
| if (ref[1] == 0) |
| AV_ZERO32(sl->mv_cache[1][scan8[i8 * 4 + i4]]); |
| m++; |
| } |
| } |
| if (!(m & 3)) |
| sl->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(const H264Context *const h, H264SliceContext *sl, |
| int *mb_type) |
| { |
| int b8_stride = 2; |
| int b4_stride = h->b_stride; |
| int mb_xy = sl->mb_xy, mb_y = sl->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(sl->ref_list[1][0].reference & 3); |
| |
| await_reference_mb_row(h, &sl->ref_list[1][0], |
| sl->mb_y + !!IS_INTERLACED(*mb_type)); |
| |
| if (IS_INTERLACED(sl->ref_list[1][0].parent->mb_type[mb_xy])) { // AFL/AFR/FR/FL -> AFL/FL |
| if (!IS_INTERLACED(*mb_type)) { // AFR/FR -> AFL/FL |
| mb_y = (sl->mb_y & ~1) + sl->col_parity; |
| mb_xy = sl->mb_x + |
| ((sl->mb_y & ~1) + sl->col_parity) * h->mb_stride; |
| b8_stride = 0; |
| } else { |
| mb_y += sl->col_fieldoff; |
| mb_xy += h->mb_stride * sl->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 = sl->mb_y & ~1; |
| mb_xy = sl->mb_x + (sl->mb_y & ~1) * h->mb_stride; |
| mb_type_col[0] = sl->ref_list[1][0].parent->mb_type[mb_xy]; |
| mb_type_col[1] = sl->ref_list[1][0].parent->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] = sl->ref_list[1][0].parent->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->ps.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, &sl->ref_list[1][0], mb_y); |
| |
| l1mv0 = (void*)&sl->ref_list[1][0].parent->motion_val[0][h->mb2b_xy[mb_xy]]; |
| l1mv1 = (void*)&sl->ref_list[1][0].parent->motion_val[1][h->mb2b_xy[mb_xy]]; |
| l1ref0 = &sl->ref_list[1][0].parent->ref_index[0][4 * mb_xy]; |
| l1ref1 = &sl->ref_list[1][0].parent->ref_index[1][4 * mb_xy]; |
| if (!b8_stride) { |
| if (sl->mb_y & 1) { |
| l1ref0 += 2; |
| l1ref1 += 2; |
| l1mv0 += 2 * b4_stride; |
| l1mv1 += 2 * b4_stride; |
| } |
| } |
| |
| { |
| const int *map_col_to_list0[2] = { sl->map_col_to_list0[0], |
| sl->map_col_to_list0[1] }; |
| const int *dist_scale_factor = sl->dist_scale_factor; |
| int ref_offset; |
| |
| if (FRAME_MBAFF(h) && IS_INTERLACED(*mb_type)) { |
| map_col_to_list0[0] = sl->map_col_to_list0_field[sl->mb_y & 1][0]; |
| map_col_to_list0[1] = sl->map_col_to_list0_field[sl->mb_y & 1][1]; |
| dist_scale_factor = sl->dist_scale_factor_field[sl->mb_y & 1]; |
| } |
| ref_offset = (sl->ref_list[1][0].parent->mbaff << 4) & (mb_type_col[0] >> 3); |
| |
| if (IS_INTERLACED(*mb_type) != IS_INTERLACED(mb_type_col[0])) { |
| int y_shift = 2 * !IS_INTERLACED(*mb_type); |
| assert(h->ps.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(sl->sub_mb_type[i8])) |
| continue; |
| sl->sub_mb_type[i8] = sub_mb_type; |
| |
| fill_rectangle(&sl->ref_cache[1][scan8[i8 * 4]], 2, 2, 8, 0, 1); |
| if (IS_INTRA(mb_type_col[y8])) { |
| fill_rectangle(&sl->ref_cache[0][scan8[i8 * 4]], 2, 2, 8, 0, 1); |
| fill_rectangle(&sl->mv_cache[0][scan8[i8 * 4]], 2, 2, 8, 0, 4); |
| fill_rectangle(&sl->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(&sl->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] * (1 << y_shift)) / 2; |
| int mx = (scale * mv_col[0] + 128) >> 8; |
| int my = (scale * my_col + 128) >> 8; |
| fill_rectangle(&sl->mv_cache[0][scan8[i8 * 4]], 2, 2, 8, |
| pack16to32(mx, my), 4); |
| fill_rectangle(&sl->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(&sl->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(&sl->ref_cache[0][scan8[0]], 4, 4, 8, ref, 1); |
| fill_rectangle(&sl->mv_cache[0][scan8[0]], 4, 4, 8, mv0, 4); |
| fill_rectangle(&sl->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(sl->sub_mb_type[i8])) |
| continue; |
| sl->sub_mb_type[i8] = sub_mb_type; |
| fill_rectangle(&sl->ref_cache[1][scan8[i8 * 4]], 2, 2, 8, 0, 1); |
| if (IS_INTRA(mb_type_col[0])) { |
| fill_rectangle(&sl->ref_cache[0][scan8[i8 * 4]], 2, 2, 8, 0, 1); |
| fill_rectangle(&sl->mv_cache[0][scan8[i8 * 4]], 2, 2, 8, 0, 4); |
| fill_rectangle(&sl->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(&sl->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(&sl->mv_cache[0][scan8[i8 * 4]], 2, 2, 8, |
| pack16to32(mx, my), 4); |
| fill_rectangle(&sl->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 = sl->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(sl->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(const H264Context *const h, H264SliceContext *sl, |
| int *mb_type) |
| { |
| if (sl->direct_spatial_mv_pred) |
| pred_spatial_direct_motion(h, sl, mb_type); |
| else |
| pred_temp_direct_motion(h, sl, mb_type); |
| } |
