729 lines
30 KiB
C
Executable File
729 lines
30 KiB
C
Executable File
/*
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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 FFmpeg.
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*
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* FFmpeg 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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* FFmpeg 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 FFmpeg; 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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* @file
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* H.264 / AVC / MPEG-4 part10 direct mb/block decoding.
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* @author Michael Niedermayer <michaelni@gmx.at>
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*/
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#include "internal.h"
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#include "avcodec.h"
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#include "h264dec.h"
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#include "h264_ps.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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#include <assert.h>
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static int get_scale_factor(H264SliceContext *sl,
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int poc, int poc1, int i)
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{
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int poc0 = sl->ref_list[0][i].poc;
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int64_t pocdiff = poc1 - (int64_t)poc0;
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int td = av_clip_int8(pocdiff);
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if (pocdiff != (int)pocdiff)
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avpriv_request_sample(sl->h264->avctx, "pocdiff overflow\n");
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if (td == 0 || sl->ref_list[0][i].parent->long_ref) {
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return 256;
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} else {
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int64_t pocdiff0 = poc - (int64_t)poc0;
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int tb = av_clip_int8(pocdiff0);
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int tx = (16384 + (FFABS(td) >> 1)) / td;
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if (pocdiff0 != (int)pocdiff0)
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av_log(sl->h264->avctx, AV_LOG_DEBUG, "pocdiff0 overflow\n");
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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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void ff_h264_direct_dist_scale_factor(const H264Context *const h,
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H264SliceContext *sl)
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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 = sl->ref_list[1][0].poc;
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int i, field;
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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 = sl->ref_list[1][0].parent->field_poc[field];
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for (i = 0; i < 2 * sl->ref_count[0]; i++)
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sl->dist_scale_factor_field[field][i ^ field] =
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get_scale_factor(sl, poc, poc1, i + 16);
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}
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for (i = 0; i < sl->ref_count[0]; i++)
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sl->dist_scale_factor[i] = get_scale_factor(sl, poc, poc1, i);
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}
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static void fill_colmap(const H264Context *h, H264SliceContext *sl,
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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 = sl->ref_list[1][0].parent;
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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 * sl->ref_count[0] : sl->ref_count[0];
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int interl = mbafi || h->picture_structure != PICT_FRAME;
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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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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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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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for (j = start; j < end; j++) {
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if (4 * sl->ref_list[0][j].parent->frame_num +
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(sl->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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void ff_h264_direct_ref_list_init(const H264Context *const h, H264SliceContext *sl)
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{
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H264Ref *const ref1 = &sl->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 < sl->list_count; list++) {
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cur->ref_count[sidx][list] = sl->ref_count[list];
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for (j = 0; j < sl->ref_count[list]; j++)
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cur->ref_poc[sidx][list][j] = 4 * sl->ref_list[list][j].parent->frame_num +
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(sl->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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if (h->current_slice == 0) {
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cur->mbaff = FRAME_MBAFF(h);
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} else {
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av_assert0(cur->mbaff == FRAME_MBAFF(h));
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}
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sl->col_fieldoff = 0;
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if (sl->list_count != 2 || !sl->ref_count[1])
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return;
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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 = sl->ref_list[1][0].parent->field_poc;
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if (col_poc[0] == INT_MAX && col_poc[1] == INT_MAX) {
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av_log(h->avctx, AV_LOG_ERROR, "co located POCs unavailable\n");
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sl->col_parity = 1;
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} else
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sl->col_parity = (FFABS(col_poc[0] - (int64_t)cur_poc) >=
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FFABS(col_poc[1] - (int64_t)cur_poc));
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ref1sidx =
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sidx = sl->col_parity;
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// FL -> FL & differ parity
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} else if (!(h->picture_structure & sl->ref_list[1][0].reference) &&
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!sl->ref_list[1][0].parent->mbaff) {
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sl->col_fieldoff = 2 * sl->ref_list[1][0].reference - 3;
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}
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if (sl->slice_type_nos != AV_PICTURE_TYPE_B || sl->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, sl, sl->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, sl, sl->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(const H264Context *const h, H264Ref *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->parent->field_picture;
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int ref_height = 16 * h->mb_height >> ref_field_picture;
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if (!HAVE_THREADS || !(h->avctx->active_thread_type & FF_THREAD_FRAME))
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return;
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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->parent->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(const H264Context *const h, H264SliceContext *sl,
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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 = sl->mb_xy, mb_y = sl->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(sl->ref_list[1][0].reference & 3);
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await_reference_mb_row(h, &sl->ref_list[1][0],
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sl->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 = sl->ref_cache[list][scan8[0] - 1];
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int top_ref = sl->ref_cache[list][scan8[0] - 8];
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int refc = sl->ref_cache[list][scan8[0] - 8 + 4];
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const int16_t *C = sl->mv_cache[list][scan8[0] - 8 + 4];
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if (refc == PART_NOT_AVAILABLE) {
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refc = sl->ref_cache[list][scan8[0] - 8 - 1];
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C = sl->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 = sl->mv_cache[list][scan8[0] - 1];
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const int16_t *const B = sl->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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av_assert2(ref[list] < (sl->ref_count[list] << !!FRAME_MBAFF(h)));
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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(&sl->ref_cache[0][scan8[0]], 4, 4, 8, (uint8_t)ref[0], 1);
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fill_rectangle(&sl->ref_cache[1][scan8[0]], 4, 4, 8, (uint8_t)ref[1], 1);
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fill_rectangle(&sl->mv_cache[0][scan8[0]], 4, 4, 8, 0, 4);
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fill_rectangle(&sl->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(sl->ref_list[1][0].parent->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 = (sl->mb_y & ~1) + sl->col_parity;
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mb_xy = sl->mb_x +
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((sl->mb_y & ~1) + sl->col_parity) * h->mb_stride;
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b8_stride = 0;
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} else {
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mb_y += sl->col_fieldoff;
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mb_xy += h->mb_stride * sl->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 = sl->mb_y & ~1;
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mb_xy = (sl->mb_y & ~1) * h->mb_stride + sl->mb_x;
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mb_type_col[0] = sl->ref_list[1][0].parent->mb_type[mb_xy];
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mb_type_col[1] = sl->ref_list[1][0].parent->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] = sl->ref_list[1][0].parent->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->ps.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, &sl->ref_list[1][0], mb_y);
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l1mv0 = (void*)&sl->ref_list[1][0].parent->motion_val[0][h->mb2b_xy[mb_xy]];
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l1mv1 = (void*)&sl->ref_list[1][0].parent->motion_val[1][h->mb2b_xy[mb_xy]];
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l1ref0 = &sl->ref_list[1][0].parent->ref_index[0][4 * mb_xy];
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l1ref1 = &sl->ref_list[1][0].parent->ref_index[1][4 * mb_xy];
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if (!b8_stride) {
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if (sl->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(sl->sub_mb_type[i8]))
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continue;
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sl->sub_mb_type[i8] = sub_mb_type;
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fill_rectangle(&sl->ref_cache[0][scan8[i8 * 4]], 2, 2, 8,
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(uint8_t)ref[0], 1);
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fill_rectangle(&sl->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]) && !sl->ref_list[1][0].parent->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(&sl->mv_cache[0][scan8[i8 * 4]], 2, 2, 8, a, 4);
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fill_rectangle(&sl->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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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);
|
|
}
|