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698 lines
28 KiB
698 lines
28 KiB
/* |
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* H.26L/H.264/AVC/JVT/14496-10/... direct mb/block decoding |
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* Copyright (c) 2003 Michael Niedermayer <michaelni@gmx.at> |
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* |
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* This file is part of Libav. |
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* |
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* Libav is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* Libav is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with Libav; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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|
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/** |
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* @file |
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* H.264 / AVC / MPEG4 part10 direct mb/block decoding. |
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* @author Michael Niedermayer <michaelni@gmx.at> |
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*/ |
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|
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#include "internal.h" |
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#include "avcodec.h" |
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#include "h264.h" |
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#include "mpegutils.h" |
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#include "rectangle.h" |
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#include "thread.h" |
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|
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#include <assert.h> |
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|
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static int get_scale_factor(H264Context *const h, int poc, int poc1, int i) |
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{ |
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int poc0 = h->ref_list[0][i].poc; |
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int td = av_clip_int8(poc1 - poc0); |
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if (td == 0 || h->ref_list[0][i].long_ref) { |
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return 256; |
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} else { |
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int tb = av_clip_int8(poc - poc0); |
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int tx = (16384 + (FFABS(td) >> 1)) / td; |
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return av_clip_intp2((tb * tx + 32) >> 6, 10); |
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} |
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} |
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|
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void ff_h264_direct_dist_scale_factor(H264Context *const h) |
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{ |
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const int poc = FIELD_PICTURE(h) ? h->cur_pic_ptr->field_poc[h->picture_structure == PICT_BOTTOM_FIELD] |
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: h->cur_pic_ptr->poc; |
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const int poc1 = h->ref_list[1][0].poc; |
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int i, field; |
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|
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if (FRAME_MBAFF(h)) |
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for (field = 0; field < 2; field++) { |
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const int poc = h->cur_pic_ptr->field_poc[field]; |
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const int poc1 = h->ref_list[1][0].field_poc[field]; |
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for (i = 0; i < 2 * h->ref_count[0]; i++) |
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h->dist_scale_factor_field[field][i ^ field] = |
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get_scale_factor(h, poc, poc1, i + 16); |
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} |
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|
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for (i = 0; i < h->ref_count[0]; i++) |
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h->dist_scale_factor[i] = get_scale_factor(h, poc, poc1, i); |
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} |
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|
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static void fill_colmap(H264Context *h, int map[2][16 + 32], int list, |
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int field, int colfield, int mbafi) |
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{ |
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H264Picture *const ref1 = &h->ref_list[1][0]; |
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int j, old_ref, rfield; |
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int start = mbafi ? 16 : 0; |
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int end = mbafi ? 16 + 2 * h->ref_count[0] : h->ref_count[0]; |
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int interl = mbafi || h->picture_structure != PICT_FRAME; |
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|
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/* bogus; fills in for missing frames */ |
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memset(map[list], 0, sizeof(map[list])); |
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|
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for (rfield = 0; rfield < 2; rfield++) { |
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for (old_ref = 0; old_ref < ref1->ref_count[colfield][list]; old_ref++) { |
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int poc = ref1->ref_poc[colfield][list][old_ref]; |
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|
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if (!interl) |
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poc |= 3; |
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// FIXME: store all MBAFF references so this is not needed |
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else if (interl && (poc & 3) == 3) |
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poc = (poc & ~3) + rfield + 1; |
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|
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for (j = start; j < end; j++) { |
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if (4 * h->ref_list[0][j].frame_num + |
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(h->ref_list[0][j].reference & 3) == poc) { |
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int cur_ref = mbafi ? (j - 16) ^ field : j; |
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if (ref1->mbaff) |
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map[list][2 * old_ref + (rfield ^ field) + 16] = cur_ref; |
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if (rfield == field || !interl) |
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map[list][old_ref] = cur_ref; |
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break; |
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} |
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} |
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} |
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} |
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} |
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|
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void ff_h264_direct_ref_list_init(H264Context *const h) |
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{ |
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H264Picture *const ref1 = &h->ref_list[1][0]; |
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H264Picture *const cur = h->cur_pic_ptr; |
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int list, j, field; |
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int sidx = (h->picture_structure & 1) ^ 1; |
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int ref1sidx = (ref1->reference & 1) ^ 1; |
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for (list = 0; list < 2; list++) { |
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cur->ref_count[sidx][list] = h->ref_count[list]; |
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for (j = 0; j < h->ref_count[list]; j++) |
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cur->ref_poc[sidx][list][j] = 4 * h->ref_list[list][j].frame_num + |
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(h->ref_list[list][j].reference & 3); |
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} |
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if (h->picture_structure == PICT_FRAME) { |
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memcpy(cur->ref_count[1], cur->ref_count[0], sizeof(cur->ref_count[0])); |
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memcpy(cur->ref_poc[1], cur->ref_poc[0], sizeof(cur->ref_poc[0])); |
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} |
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cur->mbaff = FRAME_MBAFF(h); |
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h->col_fieldoff = 0; |
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if (h->picture_structure == PICT_FRAME) { |
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int cur_poc = h->cur_pic_ptr->poc; |
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int *col_poc = h->ref_list[1]->field_poc; |
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h->col_parity = (FFABS(col_poc[0] - cur_poc) >= |
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FFABS(col_poc[1] - cur_poc)); |
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ref1sidx = |
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sidx = h->col_parity; |
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// FL -> FL & differ parity |
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} else if (!(h->picture_structure & h->ref_list[1][0].reference) && |
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!h->ref_list[1][0].mbaff) { |
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h->col_fieldoff = 2 * h->ref_list[1][0].reference - 3; |
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} |
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|
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if (h->slice_type_nos != AV_PICTURE_TYPE_B || h->direct_spatial_mv_pred) |
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return; |
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for (list = 0; list < 2; list++) { |
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fill_colmap(h, h->map_col_to_list0, list, sidx, ref1sidx, 0); |
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if (FRAME_MBAFF(h)) |
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for (field = 0; field < 2; field++) |
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fill_colmap(h, h->map_col_to_list0_field[field], list, field, |
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field, 1); |
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} |
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} |
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static void await_reference_mb_row(H264Context *const h, H264Picture *ref, |
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int mb_y) |
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{ |
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int ref_field = ref->reference - 1; |
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int ref_field_picture = ref->field_picture; |
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int ref_height = 16 * h->mb_height >> ref_field_picture; |
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|
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if (!HAVE_THREADS || !(h->avctx->active_thread_type & FF_THREAD_FRAME)) |
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return; |
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|
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/* FIXME: It can be safe to access mb stuff |
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* even if pixels aren't deblocked yet. */ |
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ff_thread_await_progress(&ref->tf, |
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FFMIN(16 * mb_y >> ref_field_picture, |
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ref_height - 1), |
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ref_field_picture && ref_field); |
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} |
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static void pred_spatial_direct_motion(H264Context *const h, int *mb_type) |
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{ |
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int b8_stride = 2; |
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int b4_stride = h->b_stride; |
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int mb_xy = h->mb_xy, mb_y = h->mb_y; |
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int mb_type_col[2]; |
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const int16_t (*l1mv0)[2], (*l1mv1)[2]; |
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const int8_t *l1ref0, *l1ref1; |
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const int is_b8x8 = IS_8X8(*mb_type); |
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unsigned int sub_mb_type = MB_TYPE_L0L1; |
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int i8, i4; |
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int ref[2]; |
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int mv[2]; |
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int list; |
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assert(h->ref_list[1][0].reference & 3); |
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await_reference_mb_row(h, &h->ref_list[1][0], |
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h->mb_y + !!IS_INTERLACED(*mb_type)); |
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#define MB_TYPE_16x16_OR_INTRA (MB_TYPE_16x16 | MB_TYPE_INTRA4x4 | \ |
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MB_TYPE_INTRA16x16 | MB_TYPE_INTRA_PCM) |
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/* ref = min(neighbors) */ |
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for (list = 0; list < 2; list++) { |
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int left_ref = h->ref_cache[list][scan8[0] - 1]; |
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int top_ref = h->ref_cache[list][scan8[0] - 8]; |
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int refc = h->ref_cache[list][scan8[0] - 8 + 4]; |
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const int16_t *C = h->mv_cache[list][scan8[0] - 8 + 4]; |
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if (refc == PART_NOT_AVAILABLE) { |
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refc = h->ref_cache[list][scan8[0] - 8 - 1]; |
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C = h->mv_cache[list][scan8[0] - 8 - 1]; |
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} |
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ref[list] = FFMIN3((unsigned)left_ref, |
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(unsigned)top_ref, |
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(unsigned)refc); |
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if (ref[list] >= 0) { |
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/* This is just pred_motion() but with the cases removed that |
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* cannot happen for direct blocks. */ |
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const int16_t *const A = h->mv_cache[list][scan8[0] - 1]; |
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const int16_t *const B = h->mv_cache[list][scan8[0] - 8]; |
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int match_count = (left_ref == ref[list]) + |
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(top_ref == ref[list]) + |
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(refc == ref[list]); |
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if (match_count > 1) { // most common |
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mv[list] = pack16to32(mid_pred(A[0], B[0], C[0]), |
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mid_pred(A[1], B[1], C[1])); |
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} else { |
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assert(match_count == 1); |
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if (left_ref == ref[list]) |
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mv[list] = AV_RN32A(A); |
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else if (top_ref == ref[list]) |
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mv[list] = AV_RN32A(B); |
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else |
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mv[list] = AV_RN32A(C); |
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} |
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} else { |
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int mask = ~(MB_TYPE_L0 << (2 * list)); |
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mv[list] = 0; |
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ref[list] = -1; |
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if (!is_b8x8) |
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*mb_type &= mask; |
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sub_mb_type &= mask; |
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} |
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} |
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if (ref[0] < 0 && ref[1] < 0) { |
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ref[0] = ref[1] = 0; |
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if (!is_b8x8) |
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*mb_type |= MB_TYPE_L0L1; |
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sub_mb_type |= MB_TYPE_L0L1; |
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} |
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if (!(is_b8x8 | mv[0] | mv[1])) { |
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fill_rectangle(&h->ref_cache[0][scan8[0]], 4, 4, 8, (uint8_t)ref[0], 1); |
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fill_rectangle(&h->ref_cache[1][scan8[0]], 4, 4, 8, (uint8_t)ref[1], 1); |
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fill_rectangle(&h->mv_cache[0][scan8[0]], 4, 4, 8, 0, 4); |
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fill_rectangle(&h->mv_cache[1][scan8[0]], 4, 4, 8, 0, 4); |
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*mb_type = (*mb_type & ~(MB_TYPE_8x8 | MB_TYPE_16x8 | MB_TYPE_8x16 | |
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MB_TYPE_P1L0 | MB_TYPE_P1L1)) | |
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MB_TYPE_16x16 | MB_TYPE_DIRECT2; |
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return; |
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} |
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if (IS_INTERLACED(h->ref_list[1][0].mb_type[mb_xy])) { // AFL/AFR/FR/FL -> AFL/FL |
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if (!IS_INTERLACED(*mb_type)) { // AFR/FR -> AFL/FL |
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mb_y = (h->mb_y & ~1) + h->col_parity; |
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mb_xy = h->mb_x + |
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((h->mb_y & ~1) + h->col_parity) * h->mb_stride; |
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b8_stride = 0; |
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} else { |
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mb_y += h->col_fieldoff; |
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mb_xy += h->mb_stride * h->col_fieldoff; // non-zero for FL -> FL & differ parity |
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} |
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goto single_col; |
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} else { // AFL/AFR/FR/FL -> AFR/FR |
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if (IS_INTERLACED(*mb_type)) { // AFL /FL -> AFR/FR |
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mb_y = h->mb_y & ~1; |
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mb_xy = (h->mb_y & ~1) * h->mb_stride + h->mb_x; |
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mb_type_col[0] = h->ref_list[1][0].mb_type[mb_xy]; |
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mb_type_col[1] = h->ref_list[1][0].mb_type[mb_xy + h->mb_stride]; |
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b8_stride = 2 + 4 * h->mb_stride; |
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b4_stride *= 6; |
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if (IS_INTERLACED(mb_type_col[0]) != |
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IS_INTERLACED(mb_type_col[1])) { |
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mb_type_col[0] &= ~MB_TYPE_INTERLACED; |
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mb_type_col[1] &= ~MB_TYPE_INTERLACED; |
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} |
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sub_mb_type |= MB_TYPE_16x16 | MB_TYPE_DIRECT2; /* B_SUB_8x8 */ |
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if ((mb_type_col[0] & MB_TYPE_16x16_OR_INTRA) && |
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(mb_type_col[1] & MB_TYPE_16x16_OR_INTRA) && |
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!is_b8x8) { |
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*mb_type |= MB_TYPE_16x8 | MB_TYPE_DIRECT2; /* B_16x8 */ |
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} else { |
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*mb_type |= MB_TYPE_8x8; |
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} |
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} else { // AFR/FR -> AFR/FR |
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single_col: |
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mb_type_col[0] = |
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mb_type_col[1] = h->ref_list[1][0].mb_type[mb_xy]; |
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sub_mb_type |= MB_TYPE_16x16 | MB_TYPE_DIRECT2; /* B_SUB_8x8 */ |
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if (!is_b8x8 && (mb_type_col[0] & MB_TYPE_16x16_OR_INTRA)) { |
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*mb_type |= MB_TYPE_16x16 | MB_TYPE_DIRECT2; /* B_16x16 */ |
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} else if (!is_b8x8 && |
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(mb_type_col[0] & (MB_TYPE_16x8 | MB_TYPE_8x16))) { |
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*mb_type |= MB_TYPE_DIRECT2 | |
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(mb_type_col[0] & (MB_TYPE_16x8 | MB_TYPE_8x16)); |
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} else { |
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if (!h->sps.direct_8x8_inference_flag) { |
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/* FIXME: Save sub mb types from previous frames (or derive |
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* from MVs) so we know exactly what block size to use. */ |
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sub_mb_type += (MB_TYPE_8x8 - MB_TYPE_16x16); /* B_SUB_4x4 */ |
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} |
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*mb_type |= MB_TYPE_8x8; |
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} |
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} |
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} |
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await_reference_mb_row(h, &h->ref_list[1][0], mb_y); |
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l1mv0 = &h->ref_list[1][0].motion_val[0][h->mb2b_xy[mb_xy]]; |
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l1mv1 = &h->ref_list[1][0].motion_val[1][h->mb2b_xy[mb_xy]]; |
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l1ref0 = &h->ref_list[1][0].ref_index[0][4 * mb_xy]; |
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l1ref1 = &h->ref_list[1][0].ref_index[1][4 * mb_xy]; |
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if (!b8_stride) { |
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if (h->mb_y & 1) { |
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l1ref0 += 2; |
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l1ref1 += 2; |
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l1mv0 += 2 * b4_stride; |
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l1mv1 += 2 * b4_stride; |
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} |
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} |
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if (IS_INTERLACED(*mb_type) != IS_INTERLACED(mb_type_col[0])) { |
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int n = 0; |
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for (i8 = 0; i8 < 4; i8++) { |
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int x8 = i8 & 1; |
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int y8 = i8 >> 1; |
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int xy8 = x8 + y8 * b8_stride; |
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int xy4 = x8 * 3 + y8 * b4_stride; |
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int a, b; |
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if (is_b8x8 && !IS_DIRECT(h->sub_mb_type[i8])) |
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continue; |
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h->sub_mb_type[i8] = sub_mb_type; |
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|
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fill_rectangle(&h->ref_cache[0][scan8[i8 * 4]], 2, 2, 8, |
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(uint8_t)ref[0], 1); |
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fill_rectangle(&h->ref_cache[1][scan8[i8 * 4]], 2, 2, 8, |
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(uint8_t)ref[1], 1); |
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if (!IS_INTRA(mb_type_col[y8]) && !h->ref_list[1][0].long_ref && |
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((l1ref0[xy8] == 0 && |
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FFABS(l1mv0[xy4][0]) <= 1 && |
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FFABS(l1mv0[xy4][1]) <= 1) || |
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(l1ref0[xy8] < 0 && |
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l1ref1[xy8] == 0 && |
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FFABS(l1mv1[xy4][0]) <= 1 && |
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FFABS(l1mv1[xy4][1]) <= 1))) { |
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a = |
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b = 0; |
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if (ref[0] > 0) |
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a = mv[0]; |
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if (ref[1] > 0) |
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b = mv[1]; |
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n++; |
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} else { |
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a = mv[0]; |
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b = mv[1]; |
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} |
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fill_rectangle(&h->mv_cache[0][scan8[i8 * 4]], 2, 2, 8, a, 4); |
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fill_rectangle(&h->mv_cache[1][scan8[i8 * 4]], 2, 2, 8, b, 4); |
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} |
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if (!is_b8x8 && !(n & 3)) |
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*mb_type = (*mb_type & ~(MB_TYPE_8x8 | MB_TYPE_16x8 | MB_TYPE_8x16 | |
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MB_TYPE_P1L0 | MB_TYPE_P1L1)) | |
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MB_TYPE_16x16 | MB_TYPE_DIRECT2; |
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} else if (IS_16X16(*mb_type)) { |
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int a, b; |
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|
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fill_rectangle(&h->ref_cache[0][scan8[0]], 4, 4, 8, (uint8_t)ref[0], 1); |
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fill_rectangle(&h->ref_cache[1][scan8[0]], 4, 4, 8, (uint8_t)ref[1], 1); |
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if (!IS_INTRA(mb_type_col[0]) && !h->ref_list[1][0].long_ref && |
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((l1ref0[0] == 0 && |
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FFABS(l1mv0[0][0]) <= 1 && |
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FFABS(l1mv0[0][1]) <= 1) || |
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(l1ref0[0] < 0 && !l1ref1[0] && |
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FFABS(l1mv1[0][0]) <= 1 && |
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FFABS(l1mv1[0][1]) <= 1 && |
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h->x264_build > 33U))) { |
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a = b = 0; |
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if (ref[0] > 0) |
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a = mv[0]; |
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if (ref[1] > 0) |
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b = mv[1]; |
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} else { |
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a = mv[0]; |
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b = mv[1]; |
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} |
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fill_rectangle(&h->mv_cache[0][scan8[0]], 4, 4, 8, a, 4); |
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fill_rectangle(&h->mv_cache[1][scan8[0]], 4, 4, 8, b, 4); |
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} else { |
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int n = 0; |
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for (i8 = 0; i8 < 4; i8++) { |
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const int x8 = i8 & 1; |
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const int y8 = i8 >> 1; |
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|
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if (is_b8x8 && !IS_DIRECT(h->sub_mb_type[i8])) |
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continue; |
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h->sub_mb_type[i8] = sub_mb_type; |
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|
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fill_rectangle(&h->mv_cache[0][scan8[i8 * 4]], 2, 2, 8, mv[0], 4); |
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fill_rectangle(&h->mv_cache[1][scan8[i8 * 4]], 2, 2, 8, mv[1], 4); |
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fill_rectangle(&h->ref_cache[0][scan8[i8 * 4]], 2, 2, 8, |
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(uint8_t)ref[0], 1); |
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fill_rectangle(&h->ref_cache[1][scan8[i8 * 4]], 2, 2, 8, |
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(uint8_t)ref[1], 1); |
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|
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assert(b8_stride == 2); |
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/* col_zero_flag */ |
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if (!IS_INTRA(mb_type_col[0]) && !h->ref_list[1][0].long_ref && |
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(l1ref0[i8] == 0 || |
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(l1ref0[i8] < 0 && |
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l1ref1[i8] == 0 && |
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h->x264_build > 33U))) { |
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const int16_t (*l1mv)[2] = l1ref0[i8] == 0 ? l1mv0 : l1mv1; |
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if (IS_SUB_8X8(sub_mb_type)) { |
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const int16_t *mv_col = l1mv[x8 * 3 + y8 * 3 * b4_stride]; |
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if (FFABS(mv_col[0]) <= 1 && FFABS(mv_col[1]) <= 1) { |
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if (ref[0] == 0) |
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fill_rectangle(&h->mv_cache[0][scan8[i8 * 4]], 2, 2, |
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8, 0, 4); |
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if (ref[1] == 0) |
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fill_rectangle(&h->mv_cache[1][scan8[i8 * 4]], 2, 2, |
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8, 0, 4); |
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n += 4; |
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} |
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} else { |
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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 = &h->ref_list[1][0].motion_val[0][h->mb2b_xy[mb_xy]]; |
|
l1mv1 = &h->ref_list[1][0].motion_val[1][h->mb2b_xy[mb_xy]]; |
|
l1ref0 = &h->ref_list[1][0].ref_index[0][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 (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); |
|
}
|
|
|