420 lines
18 KiB
C
420 lines
18 KiB
C
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/*
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* Copyright (c) 2012 The WebM project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#include <limits.h>
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#include "vp9/common/vp9_common.h"
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#include "vp9/common/vp9_pred_common.h"
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#include "vp9/common/vp9_seg_common.h"
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#include "vp9/common/vp9_treecoder.h"
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static INLINE const MB_MODE_INFO *get_above_mbmi(const MODE_INFO *const above) {
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return (above != NULL) ? &above->mbmi : NULL;
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}
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static INLINE const MB_MODE_INFO *get_left_mbmi(const MODE_INFO *const left) {
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return (left != NULL) ? &left->mbmi : NULL;
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}
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// Returns a context number for the given MB prediction signal
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unsigned char vp9_get_pred_context_switchable_interp(const MACROBLOCKD *xd) {
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const MODE_INFO *const above_mi = get_above_mi(xd);
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const MODE_INFO *const left_mi = get_left_mi(xd);
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const int above_in_image = above_mi != NULL;
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const int left_in_image = left_mi != NULL;
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// Note:
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// The mode info data structure has a one element border above and to the
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// left of the entries correpsonding to real macroblocks.
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// The prediction flags in these dummy entries are initialised to 0.
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// left
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const int left_mv_pred = left_in_image ? is_inter_block(&left_mi->mbmi)
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: 0;
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const int left_interp = left_in_image && left_mv_pred
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? left_mi->mbmi.interp_filter
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: SWITCHABLE_FILTERS;
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// above
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const int above_mv_pred = above_in_image ? is_inter_block(&above_mi->mbmi)
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: 0;
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const int above_interp = above_in_image && above_mv_pred
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? above_mi->mbmi.interp_filter
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: SWITCHABLE_FILTERS;
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if (left_interp == above_interp)
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return left_interp;
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else if (left_interp == SWITCHABLE_FILTERS &&
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above_interp != SWITCHABLE_FILTERS)
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return above_interp;
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else if (left_interp != SWITCHABLE_FILTERS &&
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above_interp == SWITCHABLE_FILTERS)
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return left_interp;
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else
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return SWITCHABLE_FILTERS;
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}
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// Returns a context number for the given MB prediction signal
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unsigned char vp9_get_pred_context_intra_inter(const MACROBLOCKD *xd) {
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const MODE_INFO *const above_mi = get_above_mi(xd);
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const MODE_INFO *const left_mi = get_left_mi(xd);
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const MB_MODE_INFO *const above_mbmi = get_above_mbmi(above_mi);
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const MB_MODE_INFO *const left_mbmi = get_left_mbmi(left_mi);
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const int above_in_image = above_mi != NULL;
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const int left_in_image = left_mi != NULL;
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const int above_intra = above_in_image ? !is_inter_block(above_mbmi) : 1;
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const int left_intra = left_in_image ? !is_inter_block(left_mbmi) : 1;
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// The mode info data structure has a one element border above and to the
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// left of the entries corresponding to real macroblocks.
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// The prediction flags in these dummy entries are initialized to 0.
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// 0 - inter/inter, inter/--, --/inter, --/--
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// 1 - intra/inter, inter/intra
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// 2 - intra/--, --/intra
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// 3 - intra/intra
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if (above_in_image && left_in_image) // both edges available
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return left_intra && above_intra ? 3
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: left_intra || above_intra;
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else if (above_in_image || left_in_image) // one edge available
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return 2 * (above_in_image ? above_intra : left_intra);
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else
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return 0;
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}
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// Returns a context number for the given MB prediction signal
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unsigned char vp9_get_pred_context_comp_inter_inter(const VP9_COMMON *cm,
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const MACROBLOCKD *xd) {
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int pred_context;
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const MODE_INFO *const above_mi = get_above_mi(xd);
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const MODE_INFO *const left_mi = get_left_mi(xd);
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const MB_MODE_INFO *const above_mbmi = get_above_mbmi(above_mi);
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const MB_MODE_INFO *const left_mbmi = get_left_mbmi(left_mi);
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const int above_in_image = above_mi != NULL;
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const int left_in_image = left_mi != NULL;
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// Note:
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// The mode info data structure has a one element border above and to the
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// left of the entries correpsonding to real macroblocks.
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// The prediction flags in these dummy entries are initialised to 0.
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if (above_in_image && left_in_image) { // both edges available
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if (!has_second_ref(above_mbmi) && !has_second_ref(left_mbmi))
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// neither edge uses comp pred (0/1)
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pred_context = (above_mbmi->ref_frame[0] == cm->comp_fixed_ref) ^
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(left_mbmi->ref_frame[0] == cm->comp_fixed_ref);
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else if (!has_second_ref(above_mbmi))
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// one of two edges uses comp pred (2/3)
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pred_context = 2 + (above_mbmi->ref_frame[0] == cm->comp_fixed_ref ||
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!is_inter_block(above_mbmi));
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else if (!has_second_ref(left_mbmi))
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// one of two edges uses comp pred (2/3)
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pred_context = 2 + (left_mbmi->ref_frame[0] == cm->comp_fixed_ref ||
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!is_inter_block(left_mbmi));
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else // both edges use comp pred (4)
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pred_context = 4;
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} else if (above_in_image || left_in_image) { // one edge available
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const MB_MODE_INFO *edge_mbmi = above_in_image ? above_mbmi : left_mbmi;
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if (!has_second_ref(edge_mbmi))
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// edge does not use comp pred (0/1)
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pred_context = edge_mbmi->ref_frame[0] == cm->comp_fixed_ref;
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else
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// edge uses comp pred (3)
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pred_context = 3;
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} else { // no edges available (1)
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pred_context = 1;
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}
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assert(pred_context >= 0 && pred_context < COMP_INTER_CONTEXTS);
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return pred_context;
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}
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// Returns a context number for the given MB prediction signal
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unsigned char vp9_get_pred_context_comp_ref_p(const VP9_COMMON *cm,
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const MACROBLOCKD *xd) {
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int pred_context;
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const MODE_INFO *const above_mi = get_above_mi(xd);
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const MODE_INFO *const left_mi = get_left_mi(xd);
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const MB_MODE_INFO *const above_mbmi = get_above_mbmi(above_mi);
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const MB_MODE_INFO *const left_mbmi = get_left_mbmi(left_mi);
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const int above_in_image = above_mi != NULL;
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const int left_in_image = left_mi != NULL;
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const int above_intra = above_in_image ? !is_inter_block(above_mbmi) : 1;
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const int left_intra = left_in_image ? !is_inter_block(left_mbmi) : 1;
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// Note:
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// The mode info data structure has a one element border above and to the
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// left of the entries correpsonding to real macroblocks.
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// The prediction flags in these dummy entries are initialised to 0.
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const int fix_ref_idx = cm->ref_frame_sign_bias[cm->comp_fixed_ref];
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const int var_ref_idx = !fix_ref_idx;
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if (above_in_image && left_in_image) { // both edges available
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if (above_intra && left_intra) { // intra/intra (2)
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pred_context = 2;
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} else if (above_intra || left_intra) { // intra/inter
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const MB_MODE_INFO *edge_mbmi = above_intra ? left_mbmi : above_mbmi;
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if (!has_second_ref(edge_mbmi)) // single pred (1/3)
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pred_context = 1 + 2 * (edge_mbmi->ref_frame[0] != cm->comp_var_ref[1]);
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else // comp pred (1/3)
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pred_context = 1 + 2 * (edge_mbmi->ref_frame[var_ref_idx]
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!= cm->comp_var_ref[1]);
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} else { // inter/inter
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const int l_sg = !has_second_ref(left_mbmi);
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const int a_sg = !has_second_ref(above_mbmi);
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MV_REFERENCE_FRAME vrfa = a_sg ? above_mbmi->ref_frame[0]
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: above_mbmi->ref_frame[var_ref_idx];
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MV_REFERENCE_FRAME vrfl = l_sg ? left_mbmi->ref_frame[0]
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: left_mbmi->ref_frame[var_ref_idx];
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if (vrfa == vrfl && cm->comp_var_ref[1] == vrfa) {
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pred_context = 0;
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} else if (l_sg && a_sg) { // single/single
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if ((vrfa == cm->comp_fixed_ref && vrfl == cm->comp_var_ref[0]) ||
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(vrfl == cm->comp_fixed_ref && vrfa == cm->comp_var_ref[0]))
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pred_context = 4;
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else if (vrfa == vrfl)
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pred_context = 3;
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else
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pred_context = 1;
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} else if (l_sg || a_sg) { // single/comp
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MV_REFERENCE_FRAME vrfc = l_sg ? vrfa : vrfl;
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MV_REFERENCE_FRAME rfs = a_sg ? vrfa : vrfl;
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if (vrfc == cm->comp_var_ref[1] && rfs != cm->comp_var_ref[1])
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pred_context = 1;
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else if (rfs == cm->comp_var_ref[1] && vrfc != cm->comp_var_ref[1])
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pred_context = 2;
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else
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pred_context = 4;
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} else if (vrfa == vrfl) { // comp/comp
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pred_context = 4;
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} else {
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pred_context = 2;
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}
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}
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} else if (above_in_image || left_in_image) { // one edge available
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const MB_MODE_INFO *edge_mbmi = above_in_image ? above_mbmi : left_mbmi;
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if (!is_inter_block(edge_mbmi)) {
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pred_context = 2;
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} else {
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if (has_second_ref(edge_mbmi))
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pred_context = 4 * (edge_mbmi->ref_frame[var_ref_idx]
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!= cm->comp_var_ref[1]);
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else
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pred_context = 3 * (edge_mbmi->ref_frame[0] != cm->comp_var_ref[1]);
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}
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} else { // no edges available (2)
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pred_context = 2;
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}
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assert(pred_context >= 0 && pred_context < REF_CONTEXTS);
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return pred_context;
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}
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unsigned char vp9_get_pred_context_single_ref_p1(const MACROBLOCKD *xd) {
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int pred_context;
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const MODE_INFO *const above_mi = get_above_mi(xd);
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const MODE_INFO *const left_mi = get_left_mi(xd);
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const MB_MODE_INFO *const above_mbmi = get_above_mbmi(above_mi);
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const MB_MODE_INFO *const left_mbmi = get_left_mbmi(left_mi);
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const int above_in_image = above_mi != NULL;
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const int left_in_image = left_mi != NULL;
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const int above_intra = above_in_image ? !is_inter_block(above_mbmi) : 1;
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const int left_intra = left_in_image ? !is_inter_block(left_mbmi) : 1;
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// Note:
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// The mode info data structure has a one element border above and to the
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// left of the entries correpsonding to real macroblocks.
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// The prediction flags in these dummy entries are initialised to 0.
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if (above_in_image && left_in_image) { // both edges available
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if (above_intra && left_intra) { // intra/intra
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pred_context = 2;
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} else if (above_intra || left_intra) { // intra/inter or inter/intra
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const MB_MODE_INFO *edge_mbmi = above_intra ? left_mbmi : above_mbmi;
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if (!has_second_ref(edge_mbmi))
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pred_context = 4 * (edge_mbmi->ref_frame[0] == LAST_FRAME);
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else
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pred_context = 1 + (edge_mbmi->ref_frame[0] == LAST_FRAME ||
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edge_mbmi->ref_frame[1] == LAST_FRAME);
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} else { // inter/inter
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if (!has_second_ref(above_mbmi) && !has_second_ref(left_mbmi)) {
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pred_context = 2 * (above_mbmi->ref_frame[0] == LAST_FRAME) +
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2 * (left_mbmi->ref_frame[0] == LAST_FRAME);
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} else if (has_second_ref(above_mbmi) && has_second_ref(left_mbmi)) {
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pred_context = 1 + (above_mbmi->ref_frame[0] == LAST_FRAME ||
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above_mbmi->ref_frame[1] == LAST_FRAME ||
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left_mbmi->ref_frame[0] == LAST_FRAME ||
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left_mbmi->ref_frame[1] == LAST_FRAME);
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} else {
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const MV_REFERENCE_FRAME rfs = !has_second_ref(above_mbmi) ?
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above_mbmi->ref_frame[0] : left_mbmi->ref_frame[0];
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const MV_REFERENCE_FRAME crf1 = has_second_ref(above_mbmi) ?
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above_mbmi->ref_frame[0] : left_mbmi->ref_frame[0];
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const MV_REFERENCE_FRAME crf2 = has_second_ref(above_mbmi) ?
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above_mbmi->ref_frame[1] : left_mbmi->ref_frame[1];
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if (rfs == LAST_FRAME)
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pred_context = 3 + (crf1 == LAST_FRAME || crf2 == LAST_FRAME);
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else
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pred_context = crf1 == LAST_FRAME || crf2 == LAST_FRAME;
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}
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}
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} else if (above_in_image || left_in_image) { // one edge available
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const MB_MODE_INFO *edge_mbmi = above_in_image ? above_mbmi : left_mbmi;
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if (!is_inter_block(edge_mbmi)) { // intra
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pred_context = 2;
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} else { // inter
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if (!has_second_ref(edge_mbmi))
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pred_context = 4 * (edge_mbmi->ref_frame[0] == LAST_FRAME);
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else
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pred_context = 1 + (edge_mbmi->ref_frame[0] == LAST_FRAME ||
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edge_mbmi->ref_frame[1] == LAST_FRAME);
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}
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} else { // no edges available
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pred_context = 2;
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}
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assert(pred_context >= 0 && pred_context < REF_CONTEXTS);
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return pred_context;
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}
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unsigned char vp9_get_pred_context_single_ref_p2(const MACROBLOCKD *xd) {
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int pred_context;
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const MODE_INFO *const above_mi = get_above_mi(xd);
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const MODE_INFO *const left_mi = get_left_mi(xd);
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const MB_MODE_INFO *const above_mbmi = get_above_mbmi(above_mi);
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const MB_MODE_INFO *const left_mbmi = get_left_mbmi(left_mi);
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const int above_in_image = above_mi != NULL;
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const int left_in_image = left_mi != NULL;
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const int above_intra = above_in_image ? !is_inter_block(above_mbmi) : 1;
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const int left_intra = left_in_image ? !is_inter_block(left_mbmi) : 1;
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// Note:
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// The mode info data structure has a one element border above and to the
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// left of the entries correpsonding to real macroblocks.
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// The prediction flags in these dummy entries are initialised to 0.
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if (above_in_image && left_in_image) { // both edges available
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if (above_intra && left_intra) { // intra/intra
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pred_context = 2;
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} else if (above_intra || left_intra) { // intra/inter or inter/intra
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const MB_MODE_INFO *edge_mbmi = above_intra ? left_mbmi : above_mbmi;
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if (!has_second_ref(edge_mbmi)) {
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if (edge_mbmi->ref_frame[0] == LAST_FRAME)
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pred_context = 3;
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else
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pred_context = 4 * (edge_mbmi->ref_frame[0] == GOLDEN_FRAME);
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} else {
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pred_context = 1 + 2 * (edge_mbmi->ref_frame[0] == GOLDEN_FRAME ||
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edge_mbmi->ref_frame[1] == GOLDEN_FRAME);
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}
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} else { // inter/inter
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if (!has_second_ref(above_mbmi) && !has_second_ref(left_mbmi)) {
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if (above_mbmi->ref_frame[0] == LAST_FRAME &&
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left_mbmi->ref_frame[0] == LAST_FRAME) {
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pred_context = 3;
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} else if (above_mbmi->ref_frame[0] == LAST_FRAME ||
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left_mbmi->ref_frame[0] == LAST_FRAME) {
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const MB_MODE_INFO *edge_mbmi =
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above_mbmi->ref_frame[0] == LAST_FRAME ? left_mbmi : above_mbmi;
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pred_context = 4 * (edge_mbmi->ref_frame[0] == GOLDEN_FRAME);
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} else {
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pred_context = 2 * (above_mbmi->ref_frame[0] == GOLDEN_FRAME) +
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2 * (left_mbmi->ref_frame[0] == GOLDEN_FRAME);
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}
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} else if (has_second_ref(above_mbmi) && has_second_ref(left_mbmi)) {
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if (above_mbmi->ref_frame[0] == left_mbmi->ref_frame[0] &&
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above_mbmi->ref_frame[1] == left_mbmi->ref_frame[1])
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pred_context = 3 * (above_mbmi->ref_frame[0] == GOLDEN_FRAME ||
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above_mbmi->ref_frame[1] == GOLDEN_FRAME ||
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left_mbmi->ref_frame[0] == GOLDEN_FRAME ||
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left_mbmi->ref_frame[1] == GOLDEN_FRAME);
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else
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pred_context = 2;
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} else {
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const MV_REFERENCE_FRAME rfs = !has_second_ref(above_mbmi) ?
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above_mbmi->ref_frame[0] : left_mbmi->ref_frame[0];
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const MV_REFERENCE_FRAME crf1 = has_second_ref(above_mbmi) ?
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above_mbmi->ref_frame[0] : left_mbmi->ref_frame[0];
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const MV_REFERENCE_FRAME crf2 = has_second_ref(above_mbmi) ?
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above_mbmi->ref_frame[1] : left_mbmi->ref_frame[1];
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if (rfs == GOLDEN_FRAME)
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pred_context = 3 + (crf1 == GOLDEN_FRAME || crf2 == GOLDEN_FRAME);
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else if (rfs == ALTREF_FRAME)
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pred_context = crf1 == GOLDEN_FRAME || crf2 == GOLDEN_FRAME;
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else
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pred_context = 1 + 2 * (crf1 == GOLDEN_FRAME || crf2 == GOLDEN_FRAME);
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}
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}
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} else if (above_in_image || left_in_image) { // one edge available
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const MB_MODE_INFO *edge_mbmi = above_in_image ? above_mbmi : left_mbmi;
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if (!is_inter_block(edge_mbmi) ||
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(edge_mbmi->ref_frame[0] == LAST_FRAME && !has_second_ref(edge_mbmi)))
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pred_context = 2;
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else if (!has_second_ref(edge_mbmi))
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pred_context = 4 * (edge_mbmi->ref_frame[0] == GOLDEN_FRAME);
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else
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pred_context = 3 * (edge_mbmi->ref_frame[0] == GOLDEN_FRAME ||
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edge_mbmi->ref_frame[1] == GOLDEN_FRAME);
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} else { // no edges available (2)
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pred_context = 2;
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}
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assert(pred_context >= 0 && pred_context < REF_CONTEXTS);
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return pred_context;
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}
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// Returns a context number for the given MB prediction signal
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// The mode info data structure has a one element border above and to the
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// left of the entries corresponding to real blocks.
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// The prediction flags in these dummy entries are initialized to 0.
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unsigned char vp9_get_pred_context_tx_size(const MACROBLOCKD *xd) {
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const MODE_INFO *const above_mi = get_above_mi(xd);
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const MODE_INFO *const left_mi = get_left_mi(xd);
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const MB_MODE_INFO *const above_mbmi = get_above_mbmi(above_mi);
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const MB_MODE_INFO *const left_mbmi = get_left_mbmi(left_mi);
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const int above_in_image = above_mi != NULL;
|
|
const int left_in_image = left_mi != NULL;
|
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const int max_tx_size = max_txsize_lookup[xd->mi_8x8[0]->mbmi.sb_type];
|
|
int above_context = max_tx_size;
|
|
int left_context = max_tx_size;
|
|
|
|
if (above_in_image)
|
|
above_context = above_mbmi->skip_coeff ? max_tx_size
|
|
: above_mbmi->tx_size;
|
|
|
|
if (left_in_image)
|
|
left_context = left_mbmi->skip_coeff ? max_tx_size
|
|
: left_mbmi->tx_size;
|
|
|
|
if (!left_in_image)
|
|
left_context = above_context;
|
|
|
|
if (!above_in_image)
|
|
above_context = left_context;
|
|
|
|
return above_context + left_context > max_tx_size;
|
|
}
|
|
|
|
void vp9_set_pred_flag_seg_id(MACROBLOCKD *xd, uint8_t pred_flag) {
|
|
xd->mi_8x8[0]->mbmi.seg_id_predicted = pred_flag;
|
|
}
|
|
|
|
int vp9_get_segment_id(VP9_COMMON *cm, const uint8_t *segment_ids,
|
|
BLOCK_SIZE bsize, int mi_row, int mi_col) {
|
|
const int mi_offset = mi_row * cm->mi_cols + mi_col;
|
|
const int bw = num_8x8_blocks_wide_lookup[bsize];
|
|
const int bh = num_8x8_blocks_high_lookup[bsize];
|
|
const int xmis = MIN(cm->mi_cols - mi_col, bw);
|
|
const int ymis = MIN(cm->mi_rows - mi_row, bh);
|
|
int x, y, segment_id = INT_MAX;
|
|
|
|
for (y = 0; y < ymis; y++)
|
|
for (x = 0; x < xmis; x++)
|
|
segment_id = MIN(segment_id,
|
|
segment_ids[mi_offset + y * cm->mi_cols + x]);
|
|
|
|
assert(segment_id >= 0 && segment_id < MAX_SEGMENTS);
|
|
return segment_id;
|
|
}
|