837 lines
35 KiB
C
Executable File
837 lines
35 KiB
C
Executable File
/*
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* H.26L/H.264/AVC/JVT/14496-10/... motion vector prediction
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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 motion vector prediction.
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* @author Michael Niedermayer <michaelni@gmx.at>
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*/
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#ifndef AVCODEC_H264_MVPRED_H
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#define AVCODEC_H264_MVPRED_H
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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 "mpegutils.h"
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#include "libavutil/avassert.h"
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static av_always_inline int fetch_diagonal_mv(const H264Context *h, H264SliceContext *sl,
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const int16_t **C,
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int i, int list, int part_width)
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{
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const int topright_ref = sl->ref_cache[list][i - 8 + part_width];
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/* there is no consistent mapping of mvs to neighboring locations that will
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* make mbaff happy, so we can't move all this logic to fill_caches */
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if (FRAME_MBAFF(h)) {
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#define SET_DIAG_MV(MV_OP, REF_OP, XY, Y4) \
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const int xy = XY, y4 = Y4; \
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const int mb_type = mb_types[xy + (y4 >> 2) * h->mb_stride]; \
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if (!USES_LIST(mb_type, list)) \
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return LIST_NOT_USED; \
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mv = h->cur_pic_ptr->motion_val[list][h->mb2b_xy[xy] + 3 + y4 * h->b_stride]; \
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sl->mv_cache[list][scan8[0] - 2][0] = mv[0]; \
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sl->mv_cache[list][scan8[0] - 2][1] = mv[1] MV_OP; \
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return h->cur_pic_ptr->ref_index[list][4 * xy + 1 + (y4 & ~1)] REF_OP;
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if (topright_ref == PART_NOT_AVAILABLE
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&& i >= scan8[0] + 8 && (i & 7) == 4
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&& sl->ref_cache[list][scan8[0] - 1] != PART_NOT_AVAILABLE) {
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const uint32_t *mb_types = h->cur_pic_ptr->mb_type;
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const int16_t *mv;
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AV_ZERO32(sl->mv_cache[list][scan8[0] - 2]);
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*C = sl->mv_cache[list][scan8[0] - 2];
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if (!MB_FIELD(sl) && IS_INTERLACED(sl->left_type[0])) {
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SET_DIAG_MV(* 2, >> 1, sl->left_mb_xy[0] + h->mb_stride,
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(sl->mb_y & 1) * 2 + (i >> 5));
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}
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if (MB_FIELD(sl) && !IS_INTERLACED(sl->left_type[0])) {
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// left shift will turn LIST_NOT_USED into PART_NOT_AVAILABLE, but that's OK.
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SET_DIAG_MV(/ 2, *2, sl->left_mb_xy[i >= 36], ((i >> 2)) & 3);
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}
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}
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#undef SET_DIAG_MV
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}
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if (topright_ref != PART_NOT_AVAILABLE) {
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*C = sl->mv_cache[list][i - 8 + part_width];
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return topright_ref;
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} else {
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ff_tlog(h->avctx, "topright MV not available\n");
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*C = sl->mv_cache[list][i - 8 - 1];
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return sl->ref_cache[list][i - 8 - 1];
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}
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}
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/**
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* Get the predicted MV.
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* @param n the block index
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* @param part_width the width of the partition (4, 8,16) -> (1, 2, 4)
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* @param mx the x component of the predicted motion vector
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* @param my the y component of the predicted motion vector
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*/
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static av_always_inline void pred_motion(const H264Context *const h,
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H264SliceContext *sl,
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int n,
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int part_width, int list, int ref,
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int *const mx, int *const my)
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{
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const int index8 = scan8[n];
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const int top_ref = sl->ref_cache[list][index8 - 8];
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const int left_ref = sl->ref_cache[list][index8 - 1];
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const int16_t *const A = sl->mv_cache[list][index8 - 1];
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const int16_t *const B = sl->mv_cache[list][index8 - 8];
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const int16_t *C;
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int diagonal_ref, match_count;
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av_assert2(part_width == 1 || part_width == 2 || part_width == 4);
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/* mv_cache
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* B . . A T T T T
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* U . . L . . , .
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* U . . L . . . .
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* U . . L . . , .
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* . . . L . . . .
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*/
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diagonal_ref = fetch_diagonal_mv(h, sl, &C, index8, list, part_width);
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match_count = (diagonal_ref == ref) + (top_ref == ref) + (left_ref == ref);
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ff_tlog(h->avctx, "pred_motion match_count=%d\n", match_count);
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if (match_count > 1) { //most common
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*mx = mid_pred(A[0], B[0], C[0]);
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*my = mid_pred(A[1], B[1], C[1]);
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} else if (match_count == 1) {
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if (left_ref == ref) {
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*mx = A[0];
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*my = A[1];
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} else if (top_ref == ref) {
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*mx = B[0];
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*my = B[1];
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} else {
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*mx = C[0];
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*my = C[1];
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}
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} else {
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if (top_ref == PART_NOT_AVAILABLE &&
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diagonal_ref == PART_NOT_AVAILABLE &&
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left_ref != PART_NOT_AVAILABLE) {
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*mx = A[0];
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*my = A[1];
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} else {
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*mx = mid_pred(A[0], B[0], C[0]);
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*my = mid_pred(A[1], B[1], C[1]);
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}
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}
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ff_tlog(h->avctx,
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"pred_motion (%2d %2d %2d) (%2d %2d %2d) (%2d %2d %2d) -> (%2d %2d %2d) at %2d %2d %d list %d\n",
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top_ref, B[0], B[1], diagonal_ref, C[0], C[1], left_ref,
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A[0], A[1], ref, *mx, *my, sl->mb_x, sl->mb_y, n, list);
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}
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/**
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* Get the directionally predicted 16x8 MV.
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* @param n the block index
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* @param mx the x component of the predicted motion vector
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* @param my the y component of the predicted motion vector
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*/
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static av_always_inline void pred_16x8_motion(const H264Context *const h,
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H264SliceContext *sl,
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int n, int list, int ref,
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int *const mx, int *const my)
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{
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if (n == 0) {
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const int top_ref = sl->ref_cache[list][scan8[0] - 8];
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const int16_t *const B = sl->mv_cache[list][scan8[0] - 8];
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ff_tlog(h->avctx, "pred_16x8: (%2d %2d %2d) at %2d %2d %d list %d\n",
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top_ref, B[0], B[1], sl->mb_x, sl->mb_y, n, list);
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if (top_ref == ref) {
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*mx = B[0];
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*my = B[1];
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return;
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}
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} else {
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const int left_ref = sl->ref_cache[list][scan8[8] - 1];
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const int16_t *const A = sl->mv_cache[list][scan8[8] - 1];
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ff_tlog(h->avctx, "pred_16x8: (%2d %2d %2d) at %2d %2d %d list %d\n",
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left_ref, A[0], A[1], sl->mb_x, sl->mb_y, n, list);
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if (left_ref == ref) {
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*mx = A[0];
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*my = A[1];
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return;
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}
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}
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//RARE
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pred_motion(h, sl, n, 4, list, ref, mx, my);
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}
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/**
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* Get the directionally predicted 8x16 MV.
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* @param n the block index
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* @param mx the x component of the predicted motion vector
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* @param my the y component of the predicted motion vector
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*/
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static av_always_inline void pred_8x16_motion(const H264Context *const h,
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H264SliceContext *sl,
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int n, int list, int ref,
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int *const mx, int *const my)
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{
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if (n == 0) {
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const int left_ref = sl->ref_cache[list][scan8[0] - 1];
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const int16_t *const A = sl->mv_cache[list][scan8[0] - 1];
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ff_tlog(h->avctx, "pred_8x16: (%2d %2d %2d) at %2d %2d %d list %d\n",
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left_ref, A[0], A[1], sl->mb_x, sl->mb_y, n, list);
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if (left_ref == ref) {
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*mx = A[0];
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*my = A[1];
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return;
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}
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} else {
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const int16_t *C;
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int diagonal_ref;
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diagonal_ref = fetch_diagonal_mv(h, sl, &C, scan8[4], list, 2);
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ff_tlog(h->avctx, "pred_8x16: (%2d %2d %2d) at %2d %2d %d list %d\n",
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diagonal_ref, C[0], C[1], sl->mb_x, sl->mb_y, n, list);
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if (diagonal_ref == ref) {
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*mx = C[0];
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*my = C[1];
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return;
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}
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}
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//RARE
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pred_motion(h, sl, n, 2, list, ref, mx, my);
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}
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#define FIX_MV_MBAFF(type, refn, mvn, idx) \
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if (FRAME_MBAFF(h)) { \
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if (MB_FIELD(sl)) { \
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if (!IS_INTERLACED(type)) { \
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refn <<= 1; \
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AV_COPY32(mvbuf[idx], mvn); \
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mvbuf[idx][1] /= 2; \
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mvn = mvbuf[idx]; \
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} \
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} else { \
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if (IS_INTERLACED(type)) { \
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refn >>= 1; \
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AV_COPY32(mvbuf[idx], mvn); \
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mvbuf[idx][1] *= 2; \
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mvn = mvbuf[idx]; \
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} \
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} \
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}
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static av_always_inline void pred_pskip_motion(const H264Context *const h,
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H264SliceContext *sl)
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{
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DECLARE_ALIGNED(4, static const int16_t, zeromv)[2] = { 0 };
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DECLARE_ALIGNED(4, int16_t, mvbuf)[3][2];
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int8_t *ref = h->cur_pic.ref_index[0];
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int16_t(*mv)[2] = h->cur_pic.motion_val[0];
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int top_ref, left_ref, diagonal_ref, match_count, mx, my;
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const int16_t *A, *B, *C;
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int b_stride = h->b_stride;
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fill_rectangle(&sl->ref_cache[0][scan8[0]], 4, 4, 8, 0, 1);
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/* To avoid doing an entire fill_decode_caches, we inline the relevant
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* parts here.
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* FIXME: this is a partial duplicate of the logic in fill_decode_caches,
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* but it's faster this way. Is there a way to avoid this duplication?
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*/
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if (USES_LIST(sl->left_type[LTOP], 0)) {
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left_ref = ref[4 * sl->left_mb_xy[LTOP] + 1 + (sl->left_block[0] & ~1)];
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A = mv[h->mb2b_xy[sl->left_mb_xy[LTOP]] + 3 + b_stride * sl->left_block[0]];
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FIX_MV_MBAFF(sl->left_type[LTOP], left_ref, A, 0);
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if (!(left_ref | AV_RN32A(A)))
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goto zeromv;
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} else if (sl->left_type[LTOP]) {
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left_ref = LIST_NOT_USED;
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A = zeromv;
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} else {
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goto zeromv;
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}
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if (USES_LIST(sl->top_type, 0)) {
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top_ref = ref[4 * sl->top_mb_xy + 2];
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B = mv[h->mb2b_xy[sl->top_mb_xy] + 3 * b_stride];
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FIX_MV_MBAFF(sl->top_type, top_ref, B, 1);
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if (!(top_ref | AV_RN32A(B)))
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goto zeromv;
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} else if (sl->top_type) {
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top_ref = LIST_NOT_USED;
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B = zeromv;
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} else {
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goto zeromv;
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}
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ff_tlog(h->avctx, "pred_pskip: (%d) (%d) at %2d %2d\n",
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top_ref, left_ref, sl->mb_x, sl->mb_y);
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if (USES_LIST(sl->topright_type, 0)) {
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diagonal_ref = ref[4 * sl->topright_mb_xy + 2];
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C = mv[h->mb2b_xy[sl->topright_mb_xy] + 3 * b_stride];
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FIX_MV_MBAFF(sl->topright_type, diagonal_ref, C, 2);
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} else if (sl->topright_type) {
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diagonal_ref = LIST_NOT_USED;
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C = zeromv;
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} else {
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if (USES_LIST(sl->topleft_type, 0)) {
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diagonal_ref = ref[4 * sl->topleft_mb_xy + 1 +
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(sl->topleft_partition & 2)];
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C = mv[h->mb2b_xy[sl->topleft_mb_xy] + 3 + b_stride +
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(sl->topleft_partition & 2 * b_stride)];
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FIX_MV_MBAFF(sl->topleft_type, diagonal_ref, C, 2);
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} else if (sl->topleft_type) {
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diagonal_ref = LIST_NOT_USED;
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C = zeromv;
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} else {
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diagonal_ref = PART_NOT_AVAILABLE;
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C = zeromv;
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}
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}
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match_count = !diagonal_ref + !top_ref + !left_ref;
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ff_tlog(h->avctx, "pred_pskip_motion match_count=%d\n", match_count);
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if (match_count > 1) {
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mx = mid_pred(A[0], B[0], C[0]);
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my = mid_pred(A[1], B[1], C[1]);
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} else if (match_count == 1) {
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if (!left_ref) {
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mx = A[0];
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my = A[1];
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} else if (!top_ref) {
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mx = B[0];
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my = B[1];
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} else {
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mx = C[0];
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my = C[1];
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}
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} else {
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mx = mid_pred(A[0], B[0], C[0]);
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my = mid_pred(A[1], B[1], C[1]);
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}
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fill_rectangle(sl->mv_cache[0][scan8[0]], 4, 4, 8, pack16to32(mx, my), 4);
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return;
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zeromv:
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fill_rectangle(sl->mv_cache[0][scan8[0]], 4, 4, 8, 0, 4);
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return;
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}
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static void fill_decode_neighbors(const H264Context *h, H264SliceContext *sl, int mb_type)
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{
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const int mb_xy = sl->mb_xy;
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int topleft_xy, top_xy, topright_xy, left_xy[LEFT_MBS];
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static const uint8_t left_block_options[4][32] = {
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{ 0, 1, 2, 3, 7, 10, 8, 11, 3 + 0 * 4, 3 + 1 * 4, 3 + 2 * 4, 3 + 3 * 4, 1 + 4 * 4, 1 + 8 * 4, 1 + 5 * 4, 1 + 9 * 4 },
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{ 2, 2, 3, 3, 8, 11, 8, 11, 3 + 2 * 4, 3 + 2 * 4, 3 + 3 * 4, 3 + 3 * 4, 1 + 5 * 4, 1 + 9 * 4, 1 + 5 * 4, 1 + 9 * 4 },
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{ 0, 0, 1, 1, 7, 10, 7, 10, 3 + 0 * 4, 3 + 0 * 4, 3 + 1 * 4, 3 + 1 * 4, 1 + 4 * 4, 1 + 8 * 4, 1 + 4 * 4, 1 + 8 * 4 },
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{ 0, 2, 0, 2, 7, 10, 7, 10, 3 + 0 * 4, 3 + 2 * 4, 3 + 0 * 4, 3 + 2 * 4, 1 + 4 * 4, 1 + 8 * 4, 1 + 4 * 4, 1 + 8 * 4 }
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};
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sl->topleft_partition = -1;
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top_xy = mb_xy - (h->mb_stride << MB_FIELD(sl));
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/* Wow, what a mess, why didn't they simplify the interlacing & intra
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* stuff, I can't imagine that these complex rules are worth it. */
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topleft_xy = top_xy - 1;
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topright_xy = top_xy + 1;
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left_xy[LBOT] = left_xy[LTOP] = mb_xy - 1;
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sl->left_block = left_block_options[0];
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if (FRAME_MBAFF(h)) {
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const int left_mb_field_flag = IS_INTERLACED(h->cur_pic.mb_type[mb_xy - 1]);
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const int curr_mb_field_flag = IS_INTERLACED(mb_type);
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if (sl->mb_y & 1) {
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if (left_mb_field_flag != curr_mb_field_flag) {
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left_xy[LBOT] = left_xy[LTOP] = mb_xy - h->mb_stride - 1;
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if (curr_mb_field_flag) {
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left_xy[LBOT] += h->mb_stride;
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sl->left_block = left_block_options[3];
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} else {
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topleft_xy += h->mb_stride;
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/* take top left mv from the middle of the mb, as opposed
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* to all other modes which use the bottom right partition */
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sl->topleft_partition = 0;
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sl->left_block = left_block_options[1];
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}
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}
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} else {
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if (curr_mb_field_flag) {
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topleft_xy += h->mb_stride & (((h->cur_pic.mb_type[top_xy - 1] >> 7) & 1) - 1);
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topright_xy += h->mb_stride & (((h->cur_pic.mb_type[top_xy + 1] >> 7) & 1) - 1);
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top_xy += h->mb_stride & (((h->cur_pic.mb_type[top_xy] >> 7) & 1) - 1);
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}
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if (left_mb_field_flag != curr_mb_field_flag) {
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if (curr_mb_field_flag) {
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left_xy[LBOT] += h->mb_stride;
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sl->left_block = left_block_options[3];
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} else {
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sl->left_block = left_block_options[2];
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}
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}
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}
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}
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sl->topleft_mb_xy = topleft_xy;
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sl->top_mb_xy = top_xy;
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sl->topright_mb_xy = topright_xy;
|
|
sl->left_mb_xy[LTOP] = left_xy[LTOP];
|
|
sl->left_mb_xy[LBOT] = left_xy[LBOT];
|
|
//FIXME do we need all in the context?
|
|
|
|
sl->topleft_type = h->cur_pic.mb_type[topleft_xy];
|
|
sl->top_type = h->cur_pic.mb_type[top_xy];
|
|
sl->topright_type = h->cur_pic.mb_type[topright_xy];
|
|
sl->left_type[LTOP] = h->cur_pic.mb_type[left_xy[LTOP]];
|
|
sl->left_type[LBOT] = h->cur_pic.mb_type[left_xy[LBOT]];
|
|
|
|
if (FMO) {
|
|
if (h->slice_table[topleft_xy] != sl->slice_num)
|
|
sl->topleft_type = 0;
|
|
if (h->slice_table[top_xy] != sl->slice_num)
|
|
sl->top_type = 0;
|
|
if (h->slice_table[left_xy[LTOP]] != sl->slice_num)
|
|
sl->left_type[LTOP] = sl->left_type[LBOT] = 0;
|
|
} else {
|
|
if (h->slice_table[topleft_xy] != sl->slice_num) {
|
|
sl->topleft_type = 0;
|
|
if (h->slice_table[top_xy] != sl->slice_num)
|
|
sl->top_type = 0;
|
|
if (h->slice_table[left_xy[LTOP]] != sl->slice_num)
|
|
sl->left_type[LTOP] = sl->left_type[LBOT] = 0;
|
|
}
|
|
}
|
|
if (h->slice_table[topright_xy] != sl->slice_num)
|
|
sl->topright_type = 0;
|
|
}
|
|
|
|
static void fill_decode_caches(const H264Context *h, H264SliceContext *sl, int mb_type)
|
|
{
|
|
int topleft_xy, top_xy, topright_xy, left_xy[LEFT_MBS];
|
|
int topleft_type, top_type, topright_type, left_type[LEFT_MBS];
|
|
const uint8_t *left_block = sl->left_block;
|
|
int i;
|
|
uint8_t *nnz;
|
|
uint8_t *nnz_cache;
|
|
|
|
topleft_xy = sl->topleft_mb_xy;
|
|
top_xy = sl->top_mb_xy;
|
|
topright_xy = sl->topright_mb_xy;
|
|
left_xy[LTOP] = sl->left_mb_xy[LTOP];
|
|
left_xy[LBOT] = sl->left_mb_xy[LBOT];
|
|
topleft_type = sl->topleft_type;
|
|
top_type = sl->top_type;
|
|
topright_type = sl->topright_type;
|
|
left_type[LTOP] = sl->left_type[LTOP];
|
|
left_type[LBOT] = sl->left_type[LBOT];
|
|
|
|
if (!IS_SKIP(mb_type)) {
|
|
if (IS_INTRA(mb_type)) {
|
|
int type_mask = h->ps.pps->constrained_intra_pred ? IS_INTRA(-1) : -1;
|
|
sl->topleft_samples_available =
|
|
sl->top_samples_available =
|
|
sl->left_samples_available = 0xFFFF;
|
|
sl->topright_samples_available = 0xEEEA;
|
|
|
|
if (!(top_type & type_mask)) {
|
|
sl->topleft_samples_available = 0xB3FF;
|
|
sl->top_samples_available = 0x33FF;
|
|
sl->topright_samples_available = 0x26EA;
|
|
}
|
|
if (IS_INTERLACED(mb_type) != IS_INTERLACED(left_type[LTOP])) {
|
|
if (IS_INTERLACED(mb_type)) {
|
|
if (!(left_type[LTOP] & type_mask)) {
|
|
sl->topleft_samples_available &= 0xDFFF;
|
|
sl->left_samples_available &= 0x5FFF;
|
|
}
|
|
if (!(left_type[LBOT] & type_mask)) {
|
|
sl->topleft_samples_available &= 0xFF5F;
|
|
sl->left_samples_available &= 0xFF5F;
|
|
}
|
|
} else {
|
|
int left_typei = h->cur_pic.mb_type[left_xy[LTOP] + h->mb_stride];
|
|
|
|
av_assert2(left_xy[LTOP] == left_xy[LBOT]);
|
|
if (!((left_typei & type_mask) && (left_type[LTOP] & type_mask))) {
|
|
sl->topleft_samples_available &= 0xDF5F;
|
|
sl->left_samples_available &= 0x5F5F;
|
|
}
|
|
}
|
|
} else {
|
|
if (!(left_type[LTOP] & type_mask)) {
|
|
sl->topleft_samples_available &= 0xDF5F;
|
|
sl->left_samples_available &= 0x5F5F;
|
|
}
|
|
}
|
|
|
|
if (!(topleft_type & type_mask))
|
|
sl->topleft_samples_available &= 0x7FFF;
|
|
|
|
if (!(topright_type & type_mask))
|
|
sl->topright_samples_available &= 0xFBFF;
|
|
|
|
if (IS_INTRA4x4(mb_type)) {
|
|
if (IS_INTRA4x4(top_type)) {
|
|
AV_COPY32(sl->intra4x4_pred_mode_cache + 4 + 8 * 0, sl->intra4x4_pred_mode + h->mb2br_xy[top_xy]);
|
|
} else {
|
|
sl->intra4x4_pred_mode_cache[4 + 8 * 0] =
|
|
sl->intra4x4_pred_mode_cache[5 + 8 * 0] =
|
|
sl->intra4x4_pred_mode_cache[6 + 8 * 0] =
|
|
sl->intra4x4_pred_mode_cache[7 + 8 * 0] = 2 - 3 * !(top_type & type_mask);
|
|
}
|
|
for (i = 0; i < 2; i++) {
|
|
if (IS_INTRA4x4(left_type[LEFT(i)])) {
|
|
int8_t *mode = sl->intra4x4_pred_mode + h->mb2br_xy[left_xy[LEFT(i)]];
|
|
sl->intra4x4_pred_mode_cache[3 + 8 * 1 + 2 * 8 * i] = mode[6 - left_block[0 + 2 * i]];
|
|
sl->intra4x4_pred_mode_cache[3 + 8 * 2 + 2 * 8 * i] = mode[6 - left_block[1 + 2 * i]];
|
|
} else {
|
|
sl->intra4x4_pred_mode_cache[3 + 8 * 1 + 2 * 8 * i] =
|
|
sl->intra4x4_pred_mode_cache[3 + 8 * 2 + 2 * 8 * i] = 2 - 3 * !(left_type[LEFT(i)] & type_mask);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* 0 . T T. T T T T
|
|
* 1 L . .L . . . .
|
|
* 2 L . .L . . . .
|
|
* 3 . T TL . . . .
|
|
* 4 L . .L . . . .
|
|
* 5 L . .. . . . .
|
|
*/
|
|
/* FIXME: constraint_intra_pred & partitioning & nnz
|
|
* (let us hope this is just a typo in the spec) */
|
|
nnz_cache = sl->non_zero_count_cache;
|
|
if (top_type) {
|
|
nnz = h->non_zero_count[top_xy];
|
|
AV_COPY32(&nnz_cache[4 + 8 * 0], &nnz[4 * 3]);
|
|
if (!h->chroma_y_shift) {
|
|
AV_COPY32(&nnz_cache[4 + 8 * 5], &nnz[4 * 7]);
|
|
AV_COPY32(&nnz_cache[4 + 8 * 10], &nnz[4 * 11]);
|
|
} else {
|
|
AV_COPY32(&nnz_cache[4 + 8 * 5], &nnz[4 * 5]);
|
|
AV_COPY32(&nnz_cache[4 + 8 * 10], &nnz[4 * 9]);
|
|
}
|
|
} else {
|
|
uint32_t top_empty = CABAC(h) && !IS_INTRA(mb_type) ? 0 : 0x40404040;
|
|
AV_WN32A(&nnz_cache[4 + 8 * 0], top_empty);
|
|
AV_WN32A(&nnz_cache[4 + 8 * 5], top_empty);
|
|
AV_WN32A(&nnz_cache[4 + 8 * 10], top_empty);
|
|
}
|
|
|
|
for (i = 0; i < 2; i++) {
|
|
if (left_type[LEFT(i)]) {
|
|
nnz = h->non_zero_count[left_xy[LEFT(i)]];
|
|
nnz_cache[3 + 8 * 1 + 2 * 8 * i] = nnz[left_block[8 + 0 + 2 * i]];
|
|
nnz_cache[3 + 8 * 2 + 2 * 8 * i] = nnz[left_block[8 + 1 + 2 * i]];
|
|
if (CHROMA444(h)) {
|
|
nnz_cache[3 + 8 * 6 + 2 * 8 * i] = nnz[left_block[8 + 0 + 2 * i] + 4 * 4];
|
|
nnz_cache[3 + 8 * 7 + 2 * 8 * i] = nnz[left_block[8 + 1 + 2 * i] + 4 * 4];
|
|
nnz_cache[3 + 8 * 11 + 2 * 8 * i] = nnz[left_block[8 + 0 + 2 * i] + 8 * 4];
|
|
nnz_cache[3 + 8 * 12 + 2 * 8 * i] = nnz[left_block[8 + 1 + 2 * i] + 8 * 4];
|
|
} else if (CHROMA422(h)) {
|
|
nnz_cache[3 + 8 * 6 + 2 * 8 * i] = nnz[left_block[8 + 0 + 2 * i] - 2 + 4 * 4];
|
|
nnz_cache[3 + 8 * 7 + 2 * 8 * i] = nnz[left_block[8 + 1 + 2 * i] - 2 + 4 * 4];
|
|
nnz_cache[3 + 8 * 11 + 2 * 8 * i] = nnz[left_block[8 + 0 + 2 * i] - 2 + 8 * 4];
|
|
nnz_cache[3 + 8 * 12 + 2 * 8 * i] = nnz[left_block[8 + 1 + 2 * i] - 2 + 8 * 4];
|
|
} else {
|
|
nnz_cache[3 + 8 * 6 + 8 * i] = nnz[left_block[8 + 4 + 2 * i]];
|
|
nnz_cache[3 + 8 * 11 + 8 * i] = nnz[left_block[8 + 5 + 2 * i]];
|
|
}
|
|
} else {
|
|
nnz_cache[3 + 8 * 1 + 2 * 8 * i] =
|
|
nnz_cache[3 + 8 * 2 + 2 * 8 * i] =
|
|
nnz_cache[3 + 8 * 6 + 2 * 8 * i] =
|
|
nnz_cache[3 + 8 * 7 + 2 * 8 * i] =
|
|
nnz_cache[3 + 8 * 11 + 2 * 8 * i] =
|
|
nnz_cache[3 + 8 * 12 + 2 * 8 * i] = CABAC(h) && !IS_INTRA(mb_type) ? 0 : 64;
|
|
}
|
|
}
|
|
|
|
if (CABAC(h)) {
|
|
// top_cbp
|
|
if (top_type)
|
|
sl->top_cbp = h->cbp_table[top_xy];
|
|
else
|
|
sl->top_cbp = IS_INTRA(mb_type) ? 0x7CF : 0x00F;
|
|
// left_cbp
|
|
if (left_type[LTOP]) {
|
|
sl->left_cbp = (h->cbp_table[left_xy[LTOP]] & 0x7F0) |
|
|
((h->cbp_table[left_xy[LTOP]] >> (left_block[0] & (~1))) & 2) |
|
|
(((h->cbp_table[left_xy[LBOT]] >> (left_block[2] & (~1))) & 2) << 2);
|
|
} else {
|
|
sl->left_cbp = IS_INTRA(mb_type) ? 0x7CF : 0x00F;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (IS_INTER(mb_type) || (IS_DIRECT(mb_type) && sl->direct_spatial_mv_pred)) {
|
|
int list;
|
|
int b_stride = h->b_stride;
|
|
for (list = 0; list < sl->list_count; list++) {
|
|
int8_t *ref_cache = &sl->ref_cache[list][scan8[0]];
|
|
int8_t *ref = h->cur_pic.ref_index[list];
|
|
int16_t(*mv_cache)[2] = &sl->mv_cache[list][scan8[0]];
|
|
int16_t(*mv)[2] = h->cur_pic.motion_val[list];
|
|
if (!USES_LIST(mb_type, list))
|
|
continue;
|
|
av_assert2(!(IS_DIRECT(mb_type) && !sl->direct_spatial_mv_pred));
|
|
|
|
if (USES_LIST(top_type, list)) {
|
|
const int b_xy = h->mb2b_xy[top_xy] + 3 * b_stride;
|
|
AV_COPY128(mv_cache[0 - 1 * 8], mv[b_xy + 0]);
|
|
ref_cache[0 - 1 * 8] =
|
|
ref_cache[1 - 1 * 8] = ref[4 * top_xy + 2];
|
|
ref_cache[2 - 1 * 8] =
|
|
ref_cache[3 - 1 * 8] = ref[4 * top_xy + 3];
|
|
} else {
|
|
AV_ZERO128(mv_cache[0 - 1 * 8]);
|
|
AV_WN32A(&ref_cache[0 - 1 * 8],
|
|
((top_type ? LIST_NOT_USED : PART_NOT_AVAILABLE) & 0xFF) * 0x01010101u);
|
|
}
|
|
|
|
if (mb_type & (MB_TYPE_16x8 | MB_TYPE_8x8)) {
|
|
for (i = 0; i < 2; i++) {
|
|
int cache_idx = -1 + i * 2 * 8;
|
|
if (USES_LIST(left_type[LEFT(i)], list)) {
|
|
const int b_xy = h->mb2b_xy[left_xy[LEFT(i)]] + 3;
|
|
const int b8_xy = 4 * left_xy[LEFT(i)] + 1;
|
|
AV_COPY32(mv_cache[cache_idx],
|
|
mv[b_xy + b_stride * left_block[0 + i * 2]]);
|
|
AV_COPY32(mv_cache[cache_idx + 8],
|
|
mv[b_xy + b_stride * left_block[1 + i * 2]]);
|
|
ref_cache[cache_idx] = ref[b8_xy + (left_block[0 + i * 2] & ~1)];
|
|
ref_cache[cache_idx + 8] = ref[b8_xy + (left_block[1 + i * 2] & ~1)];
|
|
} else {
|
|
AV_ZERO32(mv_cache[cache_idx]);
|
|
AV_ZERO32(mv_cache[cache_idx + 8]);
|
|
ref_cache[cache_idx] =
|
|
ref_cache[cache_idx + 8] = (left_type[LEFT(i)]) ? LIST_NOT_USED
|
|
: PART_NOT_AVAILABLE;
|
|
}
|
|
}
|
|
} else {
|
|
if (USES_LIST(left_type[LTOP], list)) {
|
|
const int b_xy = h->mb2b_xy[left_xy[LTOP]] + 3;
|
|
const int b8_xy = 4 * left_xy[LTOP] + 1;
|
|
AV_COPY32(mv_cache[-1], mv[b_xy + b_stride * left_block[0]]);
|
|
ref_cache[-1] = ref[b8_xy + (left_block[0] & ~1)];
|
|
} else {
|
|
AV_ZERO32(mv_cache[-1]);
|
|
ref_cache[-1] = left_type[LTOP] ? LIST_NOT_USED
|
|
: PART_NOT_AVAILABLE;
|
|
}
|
|
}
|
|
|
|
if (USES_LIST(topright_type, list)) {
|
|
const int b_xy = h->mb2b_xy[topright_xy] + 3 * b_stride;
|
|
AV_COPY32(mv_cache[4 - 1 * 8], mv[b_xy]);
|
|
ref_cache[4 - 1 * 8] = ref[4 * topright_xy + 2];
|
|
} else {
|
|
AV_ZERO32(mv_cache[4 - 1 * 8]);
|
|
ref_cache[4 - 1 * 8] = topright_type ? LIST_NOT_USED
|
|
: PART_NOT_AVAILABLE;
|
|
}
|
|
if(ref_cache[2 - 1*8] < 0 || ref_cache[4 - 1 * 8] < 0) {
|
|
if (USES_LIST(topleft_type, list)) {
|
|
const int b_xy = h->mb2b_xy[topleft_xy] + 3 + b_stride +
|
|
(sl->topleft_partition & 2 * b_stride);
|
|
const int b8_xy = 4 * topleft_xy + 1 + (sl->topleft_partition & 2);
|
|
AV_COPY32(mv_cache[-1 - 1 * 8], mv[b_xy]);
|
|
ref_cache[-1 - 1 * 8] = ref[b8_xy];
|
|
} else {
|
|
AV_ZERO32(mv_cache[-1 - 1 * 8]);
|
|
ref_cache[-1 - 1 * 8] = topleft_type ? LIST_NOT_USED
|
|
: PART_NOT_AVAILABLE;
|
|
}
|
|
}
|
|
|
|
if ((mb_type & (MB_TYPE_SKIP | MB_TYPE_DIRECT2)) && !FRAME_MBAFF(h))
|
|
continue;
|
|
|
|
if (!(mb_type & (MB_TYPE_SKIP | MB_TYPE_DIRECT2))) {
|
|
uint8_t(*mvd_cache)[2] = &sl->mvd_cache[list][scan8[0]];
|
|
uint8_t(*mvd)[2] = sl->mvd_table[list];
|
|
ref_cache[2 + 8 * 0] =
|
|
ref_cache[2 + 8 * 2] = PART_NOT_AVAILABLE;
|
|
AV_ZERO32(mv_cache[2 + 8 * 0]);
|
|
AV_ZERO32(mv_cache[2 + 8 * 2]);
|
|
|
|
if (CABAC(h)) {
|
|
if (USES_LIST(top_type, list)) {
|
|
const int b_xy = h->mb2br_xy[top_xy];
|
|
AV_COPY64(mvd_cache[0 - 1 * 8], mvd[b_xy + 0]);
|
|
} else {
|
|
AV_ZERO64(mvd_cache[0 - 1 * 8]);
|
|
}
|
|
if (USES_LIST(left_type[LTOP], list)) {
|
|
const int b_xy = h->mb2br_xy[left_xy[LTOP]] + 6;
|
|
AV_COPY16(mvd_cache[-1 + 0 * 8], mvd[b_xy - left_block[0]]);
|
|
AV_COPY16(mvd_cache[-1 + 1 * 8], mvd[b_xy - left_block[1]]);
|
|
} else {
|
|
AV_ZERO16(mvd_cache[-1 + 0 * 8]);
|
|
AV_ZERO16(mvd_cache[-1 + 1 * 8]);
|
|
}
|
|
if (USES_LIST(left_type[LBOT], list)) {
|
|
const int b_xy = h->mb2br_xy[left_xy[LBOT]] + 6;
|
|
AV_COPY16(mvd_cache[-1 + 2 * 8], mvd[b_xy - left_block[2]]);
|
|
AV_COPY16(mvd_cache[-1 + 3 * 8], mvd[b_xy - left_block[3]]);
|
|
} else {
|
|
AV_ZERO16(mvd_cache[-1 + 2 * 8]);
|
|
AV_ZERO16(mvd_cache[-1 + 3 * 8]);
|
|
}
|
|
AV_ZERO16(mvd_cache[2 + 8 * 0]);
|
|
AV_ZERO16(mvd_cache[2 + 8 * 2]);
|
|
if (sl->slice_type_nos == AV_PICTURE_TYPE_B) {
|
|
uint8_t *direct_cache = &sl->direct_cache[scan8[0]];
|
|
uint8_t *direct_table = h->direct_table;
|
|
fill_rectangle(direct_cache, 4, 4, 8, MB_TYPE_16x16 >> 1, 1);
|
|
|
|
if (IS_DIRECT(top_type)) {
|
|
AV_WN32A(&direct_cache[-1 * 8],
|
|
0x01010101u * (MB_TYPE_DIRECT2 >> 1));
|
|
} else if (IS_8X8(top_type)) {
|
|
int b8_xy = 4 * top_xy;
|
|
direct_cache[0 - 1 * 8] = direct_table[b8_xy + 2];
|
|
direct_cache[2 - 1 * 8] = direct_table[b8_xy + 3];
|
|
} else {
|
|
AV_WN32A(&direct_cache[-1 * 8],
|
|
0x01010101 * (MB_TYPE_16x16 >> 1));
|
|
}
|
|
|
|
if (IS_DIRECT(left_type[LTOP]))
|
|
direct_cache[-1 + 0 * 8] = MB_TYPE_DIRECT2 >> 1;
|
|
else if (IS_8X8(left_type[LTOP]))
|
|
direct_cache[-1 + 0 * 8] = direct_table[4 * left_xy[LTOP] + 1 + (left_block[0] & ~1)];
|
|
else
|
|
direct_cache[-1 + 0 * 8] = MB_TYPE_16x16 >> 1;
|
|
|
|
if (IS_DIRECT(left_type[LBOT]))
|
|
direct_cache[-1 + 2 * 8] = MB_TYPE_DIRECT2 >> 1;
|
|
else if (IS_8X8(left_type[LBOT]))
|
|
direct_cache[-1 + 2 * 8] = direct_table[4 * left_xy[LBOT] + 1 + (left_block[2] & ~1)];
|
|
else
|
|
direct_cache[-1 + 2 * 8] = MB_TYPE_16x16 >> 1;
|
|
}
|
|
}
|
|
}
|
|
|
|
#define MAP_MVS \
|
|
MAP_F2F(scan8[0] - 1 - 1 * 8, topleft_type) \
|
|
MAP_F2F(scan8[0] + 0 - 1 * 8, top_type) \
|
|
MAP_F2F(scan8[0] + 1 - 1 * 8, top_type) \
|
|
MAP_F2F(scan8[0] + 2 - 1 * 8, top_type) \
|
|
MAP_F2F(scan8[0] + 3 - 1 * 8, top_type) \
|
|
MAP_F2F(scan8[0] + 4 - 1 * 8, topright_type) \
|
|
MAP_F2F(scan8[0] - 1 + 0 * 8, left_type[LTOP]) \
|
|
MAP_F2F(scan8[0] - 1 + 1 * 8, left_type[LTOP]) \
|
|
MAP_F2F(scan8[0] - 1 + 2 * 8, left_type[LBOT]) \
|
|
MAP_F2F(scan8[0] - 1 + 3 * 8, left_type[LBOT])
|
|
|
|
if (FRAME_MBAFF(h)) {
|
|
if (MB_FIELD(sl)) {
|
|
|
|
#define MAP_F2F(idx, mb_type) \
|
|
if (!IS_INTERLACED(mb_type) && sl->ref_cache[list][idx] >= 0) { \
|
|
sl->ref_cache[list][idx] *= 2; \
|
|
sl->mv_cache[list][idx][1] /= 2; \
|
|
sl->mvd_cache[list][idx][1] >>= 1; \
|
|
}
|
|
|
|
MAP_MVS
|
|
} else {
|
|
|
|
#undef MAP_F2F
|
|
#define MAP_F2F(idx, mb_type) \
|
|
if (IS_INTERLACED(mb_type) && sl->ref_cache[list][idx] >= 0) { \
|
|
sl->ref_cache[list][idx] >>= 1; \
|
|
sl->mv_cache[list][idx][1] *= 2; \
|
|
sl->mvd_cache[list][idx][1] <<= 1; \
|
|
}
|
|
|
|
MAP_MVS
|
|
#undef MAP_F2F
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
sl->neighbor_transform_size = !!IS_8x8DCT(top_type) + !!IS_8x8DCT(left_type[LTOP]);
|
|
}
|
|
|
|
/**
|
|
* decodes a P_SKIP or B_SKIP macroblock
|
|
*/
|
|
static void av_unused decode_mb_skip(const H264Context *h, H264SliceContext *sl)
|
|
{
|
|
const int mb_xy = sl->mb_xy;
|
|
int mb_type = 0;
|
|
|
|
memset(h->non_zero_count[mb_xy], 0, 48);
|
|
|
|
if (MB_FIELD(sl))
|
|
mb_type |= MB_TYPE_INTERLACED;
|
|
|
|
if (sl->slice_type_nos == AV_PICTURE_TYPE_B) {
|
|
// just for fill_caches. pred_direct_motion will set the real mb_type
|
|
mb_type |= MB_TYPE_L0L1 | MB_TYPE_DIRECT2 | MB_TYPE_SKIP;
|
|
if (sl->direct_spatial_mv_pred) {
|
|
fill_decode_neighbors(h, sl, mb_type);
|
|
fill_decode_caches(h, sl, mb_type); //FIXME check what is needed and what not ...
|
|
}
|
|
ff_h264_pred_direct_motion(h, sl, &mb_type);
|
|
mb_type |= MB_TYPE_SKIP;
|
|
} else {
|
|
mb_type |= MB_TYPE_16x16 | MB_TYPE_P0L0 | MB_TYPE_P1L0 | MB_TYPE_SKIP;
|
|
|
|
fill_decode_neighbors(h, sl, mb_type);
|
|
pred_pskip_motion(h, sl);
|
|
}
|
|
|
|
write_back_motion(h, sl, mb_type);
|
|
h->cur_pic.mb_type[mb_xy] = mb_type;
|
|
h->cur_pic.qscale_table[mb_xy] = sl->qscale;
|
|
h->slice_table[mb_xy] = sl->slice_num;
|
|
sl->prev_mb_skipped = 1;
|
|
}
|
|
|
|
#endif /* AVCODEC_H264_MVPRED_H */
|