1302 строки
53 KiB
C
1302 строки
53 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 "vp10/common/common.h"
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#include "vp10/common/pred_common.h"
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#include "vp10/common/seg_common.h"
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// Returns a context number for the given MB prediction signal
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int vp10_get_pred_context_switchable_interp(const MACROBLOCKD *xd) {
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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 corresponding to real macroblocks.
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// The prediction flags in these dummy entries are initialized to 0.
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const MB_MODE_INFO *const left_mbmi = xd->left_mbmi;
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const int left_type = xd->left_available && is_inter_block(left_mbmi) ?
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left_mbmi->interp_filter : SWITCHABLE_FILTERS;
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const MB_MODE_INFO *const above_mbmi = xd->above_mbmi;
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const int above_type = xd->up_available && is_inter_block(above_mbmi) ?
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above_mbmi->interp_filter : SWITCHABLE_FILTERS;
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if (left_type == above_type)
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return left_type;
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else if (left_type == SWITCHABLE_FILTERS && above_type != SWITCHABLE_FILTERS)
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return above_type;
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else if (left_type != SWITCHABLE_FILTERS && above_type == SWITCHABLE_FILTERS)
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return left_type;
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else
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return SWITCHABLE_FILTERS;
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}
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#if CONFIG_EXT_INTRA
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int vp10_get_pred_context_intra_interp(const MACROBLOCKD *xd) {
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const MB_MODE_INFO *const left_mbmi = xd->left_mbmi;
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const MB_MODE_INFO *const above_mbmi = xd->above_mbmi;
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int left_type = INTRA_FILTERS, above_type = INTRA_FILTERS;
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if (xd->left_available && left_mbmi->sb_type >= BLOCK_8X8) {
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PREDICTION_MODE mode = left_mbmi->mode;
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if (is_inter_block(left_mbmi)) {
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switch (left_mbmi->interp_filter) {
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case EIGHTTAP_REGULAR:
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left_type = INTRA_FILTER_8TAP;
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break;
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case EIGHTTAP_SMOOTH:
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left_type = INTRA_FILTER_8TAP_SMOOTH;
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break;
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case MULTITAP_SHARP:
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left_type = INTRA_FILTER_8TAP_SHARP;
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break;
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case BILINEAR:
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left_type = INTRA_FILTERS;
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break;
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default:
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break;
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}
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} else {
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if (mode != DC_PRED && mode != TM_PRED) {
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int p_angle;
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p_angle = mode_to_angle_map[mode] +
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left_mbmi->angle_delta[0] * ANGLE_STEP;
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if (pick_intra_filter(p_angle)) {
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left_type = left_mbmi->intra_filter;
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}
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}
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}
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}
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if (xd->up_available && above_mbmi->sb_type >= BLOCK_8X8) {
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if (is_inter_block(above_mbmi)) {
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switch (above_mbmi->interp_filter) {
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case EIGHTTAP_REGULAR:
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above_type = INTRA_FILTER_8TAP;
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break;
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case EIGHTTAP_SMOOTH:
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above_type = INTRA_FILTER_8TAP_SMOOTH;
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break;
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case MULTITAP_SHARP:
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above_type = INTRA_FILTER_8TAP_SHARP;
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break;
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case BILINEAR:
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above_type = INTRA_FILTERS;
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break;
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default:
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break;
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}
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} else {
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PREDICTION_MODE mode = above_mbmi->mode;
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if (mode != DC_PRED && mode != TM_PRED) {
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int p_angle;
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p_angle = mode_to_angle_map[mode] +
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above_mbmi->angle_delta[0] * ANGLE_STEP;
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if (pick_intra_filter(p_angle)) {
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above_type = above_mbmi->intra_filter;
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}
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}
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}
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}
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if (left_type == above_type)
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return left_type;
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else if (left_type == INTRA_FILTERS && above_type != INTRA_FILTERS)
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return above_type;
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else if (left_type != INTRA_FILTERS && above_type == INTRA_FILTERS)
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return left_type;
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else
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return INTRA_FILTERS;
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}
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#endif // CONFIG_EXT_INTRA
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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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int vp10_get_intra_inter_context(const MACROBLOCKD *xd) {
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const MB_MODE_INFO *const above_mbmi = xd->above_mbmi;
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const MB_MODE_INFO *const left_mbmi = xd->left_mbmi;
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const int has_above = xd->up_available;
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const int has_left = xd->left_available;
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if (has_above && has_left) { // both edges available
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const int above_intra = !is_inter_block(above_mbmi);
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const int left_intra = !is_inter_block(left_mbmi);
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return left_intra && above_intra ? 3
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: left_intra || above_intra;
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} else if (has_above || has_left) { // one edge available
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return 2 * !is_inter_block(has_above ? above_mbmi : left_mbmi);
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} else {
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return 0;
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}
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}
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int vp10_get_reference_mode_context(const VP10_COMMON *cm,
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const MACROBLOCKD *xd) {
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int ctx;
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const MB_MODE_INFO *const above_mbmi = xd->above_mbmi;
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const MB_MODE_INFO *const left_mbmi = xd->left_mbmi;
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const int has_above = xd->up_available;
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const int has_left = xd->left_available;
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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 corresponding to real macroblocks.
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// The prediction flags in these dummy entries are initialized to 0.
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if (has_above && has_left) { // 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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ctx = (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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ctx = 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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ctx = 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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ctx = 4;
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} else if (has_above || has_left) { // one edge available
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const MB_MODE_INFO *edge_mbmi = has_above ? 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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ctx = 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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ctx = 3;
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} else { // no edges available (1)
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ctx = 1;
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}
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assert(ctx >= 0 && ctx < COMP_INTER_CONTEXTS);
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return ctx;
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}
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#if CONFIG_EXT_REFS
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// TODO(zoeliu): Future work will be conducted to optimize the context design
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// for the coding of the reference frames.
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#define CHECK_LAST_OR_LAST2(ref_frame) \
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((ref_frame == LAST_FRAME) || (ref_frame == LAST2_FRAME))
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#define CHECK_GOLDEN_LAST3_LAST4(ref_frame) \
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((ref_frame == GOLDEN_FRAME) || (ref_frame == LAST3_FRAME) || \
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(ref_frame == LAST4_FRAME))
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// Returns a context number for the given MB prediction signal
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// Signal the first reference frame for a compound mode is either
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// GOLDEN/LAST3/LAST4, or LAST/LAST2.
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//
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// NOTE(zoeliu): The probability of ref_frame[0] is either
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// GOLDEN_FRAME/LAST3_FRAME/LAST4_FRAME.
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int vp10_get_pred_context_comp_ref_p(const VP10_COMMON *cm,
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const MACROBLOCKD *xd) {
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int pred_context;
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const MB_MODE_INFO *const above_mbmi = xd->above_mbmi;
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const MB_MODE_INFO *const left_mbmi = xd->left_mbmi;
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const int above_in_image = xd->up_available;
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const int left_in_image = xd->left_available;
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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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const int above_intra = !is_inter_block(above_mbmi);
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const int left_intra = !is_inter_block(left_mbmi);
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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 +
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2 * (!CHECK_GOLDEN_LAST3_LAST4(edge_mbmi->ref_frame[0]));
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else // comp pred (1/3)
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pred_context = 1 +
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2 * (!CHECK_GOLDEN_LAST3_LAST4(edge_mbmi->ref_frame[var_ref_idx]));
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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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const 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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const 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 && CHECK_GOLDEN_LAST3_LAST4(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 == ALTREF_FRAME && CHECK_LAST_OR_LAST2(vrfl)) ||
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(vrfl == ALTREF_FRAME && CHECK_LAST_OR_LAST2(vrfa))) {
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pred_context = 4;
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} else if (vrfa == vrfl || (CHECK_LAST_OR_LAST2(vrfa) &&
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CHECK_LAST_OR_LAST2(vrfl))) {
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pred_context = 3;
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} else { // Either vrfa or vrfl is GOLDEN / LAST3 / LAST4
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// NOTE(zoeliu): Following assert may be removed once confirmed.
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assert(CHECK_GOLDEN_LAST3_LAST4(vrfa) ||
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CHECK_GOLDEN_LAST3_LAST4(vrfl));
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pred_context = 1;
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}
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} else if (l_sg || a_sg) { // single/comp
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const MV_REFERENCE_FRAME vrfc = l_sg ? vrfa : vrfl;
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const MV_REFERENCE_FRAME rfs = a_sg ? vrfa : vrfl;
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if (CHECK_GOLDEN_LAST3_LAST4(vrfc) && !CHECK_GOLDEN_LAST3_LAST4(rfs))
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pred_context = 1;
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else if (CHECK_GOLDEN_LAST3_LAST4(rfs) &&
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!CHECK_GOLDEN_LAST3_LAST4(vrfc))
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pred_context = 2;
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else
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pred_context = 4;
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} else { // comp/comp
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if ((CHECK_LAST_OR_LAST2(vrfa) && CHECK_LAST_OR_LAST2(vrfl))) {
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pred_context = 4;
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} else {
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// NOTE(zoeliu): Following assert may be removed once confirmed.
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assert(CHECK_GOLDEN_LAST3_LAST4(vrfa) ||
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CHECK_GOLDEN_LAST3_LAST4(vrfl));
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pred_context = 2;
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}
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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 =
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4 * (!CHECK_GOLDEN_LAST3_LAST4(edge_mbmi->ref_frame[var_ref_idx]));
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else
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pred_context = 3 * (!CHECK_GOLDEN_LAST3_LAST4(edge_mbmi->ref_frame[0]));
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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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// Returns a context number for the given MB prediction signal
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// Signal the first reference frame for a compound mode is LAST,
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// conditioning on that it is known either LAST/LAST2.
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//
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// NOTE(zoeliu): The probability of ref_frame[0] is LAST_FRAME,
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// conditioning on it is either LAST_FRAME or LAST2_FRAME.
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int vp10_get_pred_context_comp_ref_p1(const VP10_COMMON *cm,
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const MACROBLOCKD *xd) {
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int pred_context;
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const MB_MODE_INFO *const above_mbmi = xd->above_mbmi;
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const MB_MODE_INFO *const left_mbmi = xd->left_mbmi;
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const int above_in_image = xd->up_available;
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const int left_in_image = xd->left_available;
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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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const int above_intra = !is_inter_block(above_mbmi);
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const int left_intra = !is_inter_block(left_mbmi);
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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] != LAST_FRAME);
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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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!= LAST_FRAME);
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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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const 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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const 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 && vrfa == LAST_FRAME)
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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 == LAST_FRAME || vrfl == LAST_FRAME)
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pred_context = 1;
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else if (CHECK_GOLDEN_LAST3_LAST4(vrfa) ||
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CHECK_GOLDEN_LAST3_LAST4(vrfl))
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pred_context = 2 + (vrfa != vrfl);
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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 = 4;
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} else if (l_sg || a_sg) { // single/comp
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const MV_REFERENCE_FRAME vrfc = l_sg ? vrfa : vrfl;
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const MV_REFERENCE_FRAME rfs = a_sg ? vrfa : vrfl;
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if (vrfc == LAST_FRAME && rfs != LAST_FRAME)
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pred_context = 1;
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else if (rfs == LAST_FRAME && vrfc != LAST_FRAME)
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pred_context = 2;
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else
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pred_context = 3 +
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(vrfc == LAST2_FRAME || CHECK_GOLDEN_LAST3_LAST4(rfs));
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} else { // comp/comp
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if (vrfa == LAST_FRAME || vrfl == LAST_FRAME)
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pred_context = 2;
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else
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pred_context = 3 + (CHECK_GOLDEN_LAST3_LAST4(vrfa) ||
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CHECK_GOLDEN_LAST3_LAST4(vrfl));
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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] != LAST_FRAME);
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} else {
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if (edge_mbmi->ref_frame[0] == LAST_FRAME)
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pred_context = 0;
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else
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pred_context = 2 + CHECK_GOLDEN_LAST3_LAST4(edge_mbmi->ref_frame[0]);
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}
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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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#define CHECK_LAST3_OR_LAST4(ref_frame) \
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((ref_frame == LAST3_FRAME) || (ref_frame == LAST4_FRAME))
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// Returns a context number for the given MB prediction signal
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// Signal the first reference frame for a compound mode is GOLDEN,
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// conditioning on that it is known either GOLDEN/LAST3/LAST4.
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//
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// NOTE(zoeliu): The probability of ref_frame[0] is GOLDEN_FRAME,
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// conditioning on it is either GOLDEN / LAST3 / LAST4.
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int vp10_get_pred_context_comp_ref_p2(const VP10_COMMON *cm,
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const MACROBLOCKD *xd) {
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int pred_context;
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const MB_MODE_INFO *const above_mbmi = xd->above_mbmi;
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const MB_MODE_INFO *const left_mbmi = xd->left_mbmi;
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const int above_in_image = xd->up_available;
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const int left_in_image = xd->left_available;
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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];
|
|
const int var_ref_idx = !fix_ref_idx;
|
|
|
|
if (above_in_image && left_in_image) { // both edges available
|
|
const int above_intra = !is_inter_block(above_mbmi);
|
|
const int left_intra = !is_inter_block(left_mbmi);
|
|
|
|
if (above_intra && left_intra) { // intra/intra (2)
|
|
pred_context = 2;
|
|
} else if (above_intra || left_intra) { // intra/inter
|
|
const MB_MODE_INFO *edge_mbmi = above_intra ? left_mbmi : above_mbmi;
|
|
|
|
if (!has_second_ref(edge_mbmi)) // single pred (1/3)
|
|
pred_context = 1 + 2 * (edge_mbmi->ref_frame[0] != GOLDEN_FRAME);
|
|
else // comp pred (1/3)
|
|
pred_context = 1 +
|
|
2 * (edge_mbmi->ref_frame[var_ref_idx] != GOLDEN_FRAME);
|
|
} else { // inter/inter
|
|
const int l_sg = !has_second_ref(left_mbmi);
|
|
const int a_sg = !has_second_ref(above_mbmi);
|
|
const MV_REFERENCE_FRAME vrfa = a_sg ? above_mbmi->ref_frame[0]
|
|
: above_mbmi->ref_frame[var_ref_idx];
|
|
const MV_REFERENCE_FRAME vrfl = l_sg ? left_mbmi->ref_frame[0]
|
|
: left_mbmi->ref_frame[var_ref_idx];
|
|
|
|
if (vrfa == vrfl && vrfa == GOLDEN_FRAME)
|
|
pred_context = 0;
|
|
else if (l_sg && a_sg) { // single/single
|
|
if (vrfa == GOLDEN_FRAME || vrfl == GOLDEN_FRAME)
|
|
pred_context = 1;
|
|
else if (CHECK_LAST_OR_LAST2(vrfa) || CHECK_LAST_OR_LAST2(vrfl))
|
|
pred_context = 2 + (vrfa != vrfl);
|
|
else if (vrfa == vrfl)
|
|
pred_context = 3;
|
|
else
|
|
pred_context = 4;
|
|
} else if (l_sg || a_sg) { // single/comp
|
|
const MV_REFERENCE_FRAME vrfc = l_sg ? vrfa : vrfl;
|
|
const MV_REFERENCE_FRAME rfs = a_sg ? vrfa : vrfl;
|
|
|
|
if (vrfc == GOLDEN_FRAME && rfs != GOLDEN_FRAME)
|
|
pred_context = 1;
|
|
else if (rfs == GOLDEN_FRAME && vrfc != GOLDEN_FRAME)
|
|
pred_context = 2;
|
|
else
|
|
pred_context = 3 +
|
|
(CHECK_LAST3_OR_LAST4(vrfc) || CHECK_LAST_OR_LAST2(rfs));
|
|
} else { // comp/comp
|
|
if (vrfa == GOLDEN_FRAME || vrfl == GOLDEN_FRAME)
|
|
pred_context = 2;
|
|
else
|
|
pred_context = 3 +
|
|
(CHECK_LAST_OR_LAST2(vrfa) || CHECK_LAST_OR_LAST2(vrfl));
|
|
}
|
|
}
|
|
} else if (above_in_image || left_in_image) { // one edge available
|
|
const MB_MODE_INFO *edge_mbmi = above_in_image ? above_mbmi : left_mbmi;
|
|
|
|
if (!is_inter_block(edge_mbmi)) {
|
|
pred_context = 2;
|
|
} else {
|
|
if (has_second_ref(edge_mbmi)) {
|
|
pred_context = 4 * (edge_mbmi->ref_frame[var_ref_idx] != GOLDEN_FRAME);
|
|
} else {
|
|
if (edge_mbmi->ref_frame[0] == GOLDEN_FRAME)
|
|
pred_context = 0;
|
|
else
|
|
pred_context = 2 + CHECK_LAST_OR_LAST2(edge_mbmi->ref_frame[0]);
|
|
}
|
|
}
|
|
} else { // no edges available (2)
|
|
pred_context = 2;
|
|
}
|
|
|
|
assert(pred_context >= 0 && pred_context < REF_CONTEXTS);
|
|
|
|
return pred_context;
|
|
}
|
|
|
|
#define CHECK_LAST_LAST2_GOLDEN(ref_frame) \
|
|
((ref_frame == LAST_FRAME) || (ref_frame == LAST2_FRAME) || \
|
|
(ref_frame == GOLDEN_FRAME))
|
|
|
|
// Returns a context number for the given MB prediction signal
|
|
// Signal the first reference frame for a compound mode is LAST3,
|
|
// conditioning on that it is known either LAST3/LAST4.
|
|
//
|
|
// NOTE(zoeliu): The probability of ref_frame[0] is LAST3_FRAME,
|
|
// conditioning on it is either LAST3 / LAST4.
|
|
int vp10_get_pred_context_comp_ref_p3(const VP10_COMMON *cm,
|
|
const MACROBLOCKD *xd) {
|
|
int pred_context;
|
|
const MB_MODE_INFO *const above_mbmi = xd->above_mbmi;
|
|
const MB_MODE_INFO *const left_mbmi = xd->left_mbmi;
|
|
const int above_in_image = xd->up_available;
|
|
const int left_in_image = xd->left_available;
|
|
|
|
// Note:
|
|
// The mode info data structure has a one element border above and to the
|
|
// left of the entries correpsonding to real macroblocks.
|
|
// The prediction flags in these dummy entries are initialised to 0.
|
|
const int fix_ref_idx = cm->ref_frame_sign_bias[cm->comp_fixed_ref];
|
|
const int var_ref_idx = !fix_ref_idx;
|
|
|
|
if (above_in_image && left_in_image) { // both edges available
|
|
const int above_intra = !is_inter_block(above_mbmi);
|
|
const int left_intra = !is_inter_block(left_mbmi);
|
|
|
|
if (above_intra && left_intra) { // intra/intra (2)
|
|
pred_context = 2;
|
|
} else if (above_intra || left_intra) { // intra/inter
|
|
const MB_MODE_INFO *edge_mbmi = above_intra ? left_mbmi : above_mbmi;
|
|
|
|
if (!has_second_ref(edge_mbmi)) // single pred (1/3)
|
|
pred_context = 1 + 2 * (edge_mbmi->ref_frame[0] != LAST3_FRAME);
|
|
else // comp pred (1/3)
|
|
pred_context = 1 +
|
|
2 * (edge_mbmi->ref_frame[var_ref_idx] != LAST3_FRAME);
|
|
} else { // inter/inter
|
|
const int l_sg = !has_second_ref(left_mbmi);
|
|
const int a_sg = !has_second_ref(above_mbmi);
|
|
const MV_REFERENCE_FRAME vrfa = a_sg ? above_mbmi->ref_frame[0]
|
|
: above_mbmi->ref_frame[var_ref_idx];
|
|
const MV_REFERENCE_FRAME vrfl = l_sg ? left_mbmi->ref_frame[0]
|
|
: left_mbmi->ref_frame[var_ref_idx];
|
|
|
|
if (vrfa == vrfl && vrfa == LAST3_FRAME)
|
|
pred_context = 0;
|
|
else if (l_sg && a_sg) { // single/single
|
|
if (vrfa == LAST3_FRAME || vrfl == LAST3_FRAME)
|
|
pred_context = 1;
|
|
else if (CHECK_LAST_LAST2_GOLDEN(vrfa) || CHECK_LAST_LAST2_GOLDEN(vrfl))
|
|
pred_context = 2 + (vrfa != vrfl);
|
|
else if (vrfa == vrfl)
|
|
pred_context = 3;
|
|
else
|
|
pred_context = 4;
|
|
} else if (l_sg || a_sg) { // single/comp
|
|
const MV_REFERENCE_FRAME vrfc = l_sg ? vrfa : vrfl;
|
|
const MV_REFERENCE_FRAME rfs = a_sg ? vrfa : vrfl;
|
|
|
|
if (vrfc == LAST3_FRAME && rfs != LAST3_FRAME)
|
|
pred_context = 1;
|
|
else if (rfs == LAST3_FRAME && vrfc != LAST3_FRAME)
|
|
pred_context = 2;
|
|
else
|
|
pred_context = 3 +
|
|
(vrfc == LAST4_FRAME || CHECK_LAST_LAST2_GOLDEN(rfs));
|
|
} else { // comp/comp
|
|
if (vrfa == LAST3_FRAME || vrfl == LAST3_FRAME)
|
|
pred_context = 2;
|
|
else
|
|
pred_context = 3 +
|
|
(CHECK_LAST_LAST2_GOLDEN(vrfa) || CHECK_LAST_LAST2_GOLDEN(vrfl));
|
|
}
|
|
}
|
|
} else if (above_in_image || left_in_image) { // one edge available
|
|
const MB_MODE_INFO *edge_mbmi = above_in_image ? above_mbmi : left_mbmi;
|
|
|
|
if (!is_inter_block(edge_mbmi)) {
|
|
pred_context = 2;
|
|
} else {
|
|
if (has_second_ref(edge_mbmi)) {
|
|
pred_context = 4 * (edge_mbmi->ref_frame[var_ref_idx] != LAST3_FRAME);
|
|
} else {
|
|
if (edge_mbmi->ref_frame[0] == LAST3_FRAME)
|
|
pred_context = 0;
|
|
else
|
|
pred_context = 2 + CHECK_LAST_LAST2_GOLDEN(edge_mbmi->ref_frame[0]);
|
|
}
|
|
}
|
|
} else { // no edges available (2)
|
|
pred_context = 2;
|
|
}
|
|
|
|
assert(pred_context >= 0 && pred_context < REF_CONTEXTS);
|
|
|
|
return pred_context;
|
|
}
|
|
|
|
#else // CONFIG_EXT_REFS
|
|
|
|
// Returns a context number for the given MB prediction signal
|
|
int vp10_get_pred_context_comp_ref_p(const VP10_COMMON *cm,
|
|
const MACROBLOCKD *xd) {
|
|
int pred_context;
|
|
const MB_MODE_INFO *const above_mbmi = xd->above_mbmi;
|
|
const MB_MODE_INFO *const left_mbmi = xd->left_mbmi;
|
|
const int above_in_image = xd->up_available;
|
|
const int left_in_image = xd->left_available;
|
|
|
|
// Note:
|
|
// The mode info data structure has a one element border above and to the
|
|
// left of the entries corresponding to real macroblocks.
|
|
// The prediction flags in these dummy entries are initialized to 0.
|
|
const int fix_ref_idx = cm->ref_frame_sign_bias[cm->comp_fixed_ref];
|
|
const int var_ref_idx = !fix_ref_idx;
|
|
|
|
if (above_in_image && left_in_image) { // both edges available
|
|
const int above_intra = !is_inter_block(above_mbmi);
|
|
const int left_intra = !is_inter_block(left_mbmi);
|
|
|
|
if (above_intra && left_intra) { // intra/intra (2)
|
|
pred_context = 2;
|
|
} else if (above_intra || left_intra) { // intra/inter
|
|
const MB_MODE_INFO *edge_mbmi = above_intra ? left_mbmi : above_mbmi;
|
|
|
|
if (!has_second_ref(edge_mbmi)) // single pred (1/3)
|
|
pred_context = 1 + 2 * (edge_mbmi->ref_frame[0] != cm->comp_var_ref[1]);
|
|
else // comp pred (1/3)
|
|
pred_context = 1 + 2 * (edge_mbmi->ref_frame[var_ref_idx]
|
|
!= cm->comp_var_ref[1]);
|
|
} else { // inter/inter
|
|
const int l_sg = !has_second_ref(left_mbmi);
|
|
const int a_sg = !has_second_ref(above_mbmi);
|
|
const MV_REFERENCE_FRAME vrfa = a_sg ? above_mbmi->ref_frame[0]
|
|
: above_mbmi->ref_frame[var_ref_idx];
|
|
const MV_REFERENCE_FRAME vrfl = l_sg ? left_mbmi->ref_frame[0]
|
|
: left_mbmi->ref_frame[var_ref_idx];
|
|
|
|
if (vrfa == vrfl && cm->comp_var_ref[1] == vrfa) {
|
|
pred_context = 0;
|
|
} else if (l_sg && a_sg) { // single/single
|
|
if ((vrfa == cm->comp_fixed_ref && vrfl == cm->comp_var_ref[0]) ||
|
|
(vrfl == cm->comp_fixed_ref && vrfa == cm->comp_var_ref[0]))
|
|
pred_context = 4;
|
|
else if (vrfa == vrfl)
|
|
pred_context = 3;
|
|
else
|
|
pred_context = 1;
|
|
} else if (l_sg || a_sg) { // single/comp
|
|
const MV_REFERENCE_FRAME vrfc = l_sg ? vrfa : vrfl;
|
|
const MV_REFERENCE_FRAME rfs = a_sg ? vrfa : vrfl;
|
|
if (vrfc == cm->comp_var_ref[1] && rfs != cm->comp_var_ref[1])
|
|
pred_context = 1;
|
|
else if (rfs == cm->comp_var_ref[1] && vrfc != cm->comp_var_ref[1])
|
|
pred_context = 2;
|
|
else
|
|
pred_context = 4;
|
|
} else if (vrfa == vrfl) { // comp/comp
|
|
pred_context = 4;
|
|
} else {
|
|
pred_context = 2;
|
|
}
|
|
}
|
|
} else if (above_in_image || left_in_image) { // one edge available
|
|
const MB_MODE_INFO *edge_mbmi = above_in_image ? above_mbmi : left_mbmi;
|
|
|
|
if (!is_inter_block(edge_mbmi)) {
|
|
pred_context = 2;
|
|
} else {
|
|
if (has_second_ref(edge_mbmi))
|
|
pred_context = 4 * (edge_mbmi->ref_frame[var_ref_idx]
|
|
!= cm->comp_var_ref[1]);
|
|
else
|
|
pred_context = 3 * (edge_mbmi->ref_frame[0] != cm->comp_var_ref[1]);
|
|
}
|
|
} else { // no edges available (2)
|
|
pred_context = 2;
|
|
}
|
|
assert(pred_context >= 0 && pred_context < REF_CONTEXTS);
|
|
|
|
return pred_context;
|
|
}
|
|
|
|
#endif // CONFIG_EXT_REFS
|
|
|
|
#if CONFIG_EXT_REFS
|
|
|
|
#define CHECK_GOLDEN_OR_ALTREF(ref_frame) \
|
|
((ref_frame == GOLDEN_FRAME) || (ref_frame == ALTREF_FRAME))
|
|
|
|
// For the bit to signal whether the single reference is a ALTREF_FRAME
|
|
// or a GOLDEN_FRAME.
|
|
//
|
|
// NOTE(zoeliu): The probability of ref_frame[0] is ALTREF/GOLDEN.
|
|
int vp10_get_pred_context_single_ref_p1(const MACROBLOCKD *xd) {
|
|
int pred_context;
|
|
const MB_MODE_INFO *const above_mbmi = xd->above_mbmi;
|
|
const MB_MODE_INFO *const left_mbmi = xd->left_mbmi;
|
|
const int has_above = xd->up_available;
|
|
const int has_left = xd->left_available;
|
|
|
|
// Note:
|
|
// The mode info data structure has a one element border above and to the
|
|
// left of the entries correpsonding to real macroblocks.
|
|
// The prediction flags in these dummy entries are initialised to 0.
|
|
if (has_above && has_left) { // both edges available
|
|
const int above_intra = !is_inter_block(above_mbmi);
|
|
const int left_intra = !is_inter_block(left_mbmi);
|
|
|
|
if (above_intra && left_intra) { // intra/intra
|
|
pred_context = 2;
|
|
} else if (above_intra || left_intra) { // intra/inter or inter/intra
|
|
const MB_MODE_INFO *edge_mbmi = above_intra ? left_mbmi : above_mbmi;
|
|
|
|
if (!has_second_ref(edge_mbmi))
|
|
pred_context = 4 * (!CHECK_GOLDEN_OR_ALTREF(edge_mbmi->ref_frame[0]));
|
|
else
|
|
pred_context = 1 + (!CHECK_GOLDEN_OR_ALTREF(edge_mbmi->ref_frame[0]) ||
|
|
!CHECK_GOLDEN_OR_ALTREF(edge_mbmi->ref_frame[1]));
|
|
} else { // inter/inter
|
|
const int above_has_second = has_second_ref(above_mbmi);
|
|
const int left_has_second = has_second_ref(left_mbmi);
|
|
|
|
const MV_REFERENCE_FRAME above0 = above_mbmi->ref_frame[0];
|
|
const MV_REFERENCE_FRAME above1 = above_mbmi->ref_frame[1];
|
|
const MV_REFERENCE_FRAME left0 = left_mbmi->ref_frame[0];
|
|
const MV_REFERENCE_FRAME left1 = left_mbmi->ref_frame[1];
|
|
|
|
if (above_has_second && left_has_second) {
|
|
pred_context = 1 + (!CHECK_GOLDEN_OR_ALTREF(above0) ||
|
|
!CHECK_GOLDEN_OR_ALTREF(above1) ||
|
|
!CHECK_GOLDEN_OR_ALTREF(left0) ||
|
|
!CHECK_GOLDEN_OR_ALTREF(left1));
|
|
} else if (above_has_second || left_has_second) {
|
|
const MV_REFERENCE_FRAME rfs = !above_has_second ? above0 : left0;
|
|
const MV_REFERENCE_FRAME crf1 = above_has_second ? above0 : left0;
|
|
const MV_REFERENCE_FRAME crf2 = above_has_second ? above1 : left1;
|
|
|
|
if (!CHECK_GOLDEN_OR_ALTREF(rfs))
|
|
pred_context = 3 + (!CHECK_GOLDEN_OR_ALTREF(crf1) ||
|
|
!CHECK_GOLDEN_OR_ALTREF(crf2));
|
|
else
|
|
pred_context = !CHECK_GOLDEN_OR_ALTREF(crf1) ||
|
|
!CHECK_GOLDEN_OR_ALTREF(crf2);
|
|
} else {
|
|
pred_context = 2 * (!CHECK_GOLDEN_OR_ALTREF(above0)) +
|
|
2 * (!CHECK_GOLDEN_OR_ALTREF(left0));
|
|
}
|
|
}
|
|
} else if (has_above || has_left) { // one edge available
|
|
const MB_MODE_INFO *edge_mbmi = has_above ? above_mbmi : left_mbmi;
|
|
if (!is_inter_block(edge_mbmi)) { // intra
|
|
pred_context = 2;
|
|
} else { // inter
|
|
if (!has_second_ref(edge_mbmi))
|
|
pred_context = 4 * (!CHECK_GOLDEN_OR_ALTREF(edge_mbmi->ref_frame[0]));
|
|
else
|
|
pred_context = 1 + (!CHECK_GOLDEN_OR_ALTREF(edge_mbmi->ref_frame[0]) ||
|
|
!CHECK_GOLDEN_OR_ALTREF(edge_mbmi->ref_frame[1]));
|
|
}
|
|
} else { // no edges available
|
|
pred_context = 2;
|
|
}
|
|
|
|
assert(pred_context >= 0 && pred_context < REF_CONTEXTS);
|
|
return pred_context;
|
|
}
|
|
|
|
// For the bit to signal whether the single reference is ALTREF_FRAME or
|
|
// GOLDEN_FRAME, knowing that it shall be either of these 2 choices.
|
|
//
|
|
// NOTE(zoeliu): The probability of ref_frame[0] is ALTREF_FRAME, conditioning
|
|
// on it is either ALTREF_FRAME/GOLDEN_FRAME.
|
|
int vp10_get_pred_context_single_ref_p2(const MACROBLOCKD *xd) {
|
|
int pred_context;
|
|
const MB_MODE_INFO *const above_mbmi = xd->above_mbmi;
|
|
const MB_MODE_INFO *const left_mbmi = xd->left_mbmi;
|
|
const int has_above = xd->up_available;
|
|
const int has_left = xd->left_available;
|
|
|
|
// Note:
|
|
// The mode info data structure has a one element border above and to the
|
|
// left of the entries correpsonding to real macroblocks.
|
|
// The prediction flags in these dummy entries are initialised to 0.
|
|
if (has_above && has_left) { // both edges available
|
|
const int above_intra = !is_inter_block(above_mbmi);
|
|
const int left_intra = !is_inter_block(left_mbmi);
|
|
|
|
if (above_intra && left_intra) { // intra/intra
|
|
pred_context = 2;
|
|
} else if (above_intra || left_intra) { // intra/inter or inter/intra
|
|
const MB_MODE_INFO *edge_mbmi = above_intra ? left_mbmi : above_mbmi;
|
|
if (!has_second_ref(edge_mbmi)) {
|
|
if (!CHECK_GOLDEN_OR_ALTREF(edge_mbmi->ref_frame[0]))
|
|
pred_context = 3;
|
|
else
|
|
pred_context = 4 * (edge_mbmi->ref_frame[0] == GOLDEN_FRAME);
|
|
} else {
|
|
pred_context = 1 + 2 * (edge_mbmi->ref_frame[0] == GOLDEN_FRAME ||
|
|
edge_mbmi->ref_frame[1] == GOLDEN_FRAME);
|
|
}
|
|
} else { // inter/inter
|
|
const int above_has_second = has_second_ref(above_mbmi);
|
|
const int left_has_second = has_second_ref(left_mbmi);
|
|
const MV_REFERENCE_FRAME above0 = above_mbmi->ref_frame[0];
|
|
const MV_REFERENCE_FRAME above1 = above_mbmi->ref_frame[1];
|
|
const MV_REFERENCE_FRAME left0 = left_mbmi->ref_frame[0];
|
|
const MV_REFERENCE_FRAME left1 = left_mbmi->ref_frame[1];
|
|
|
|
if (above_has_second && left_has_second) {
|
|
if (above0 == left0 && above1 == left1)
|
|
pred_context = 3 * (above0 == GOLDEN_FRAME ||
|
|
above1 == GOLDEN_FRAME ||
|
|
left0 == GOLDEN_FRAME ||
|
|
left1 == GOLDEN_FRAME);
|
|
else
|
|
pred_context = 2;
|
|
} else if (above_has_second || left_has_second) {
|
|
const MV_REFERENCE_FRAME rfs = !above_has_second ? above0 : left0;
|
|
const MV_REFERENCE_FRAME crf1 = above_has_second ? above0 : left0;
|
|
const MV_REFERENCE_FRAME crf2 = above_has_second ? above1 : left1;
|
|
|
|
if (rfs == GOLDEN_FRAME)
|
|
pred_context = 3 + (crf1 == GOLDEN_FRAME || crf2 == GOLDEN_FRAME);
|
|
else if (rfs == ALTREF_FRAME)
|
|
pred_context = (crf1 == GOLDEN_FRAME || crf2 == GOLDEN_FRAME);
|
|
else
|
|
pred_context = 1 + 2 * (crf1 == GOLDEN_FRAME || crf2 == GOLDEN_FRAME);
|
|
} else {
|
|
if (!CHECK_GOLDEN_OR_ALTREF(above0) && !CHECK_GOLDEN_OR_ALTREF(left0)) {
|
|
pred_context = 2 + (above0 == left0);
|
|
} else if (!CHECK_GOLDEN_OR_ALTREF(above0) ||
|
|
!CHECK_GOLDEN_OR_ALTREF(left0)) {
|
|
const MV_REFERENCE_FRAME edge0 =
|
|
!CHECK_GOLDEN_OR_ALTREF(above0) ? left0 : above0;
|
|
pred_context = 4 * (edge0 == GOLDEN_FRAME);
|
|
} else {
|
|
pred_context = 2 * (above0 == GOLDEN_FRAME) +
|
|
2 * (left0 == GOLDEN_FRAME);
|
|
}
|
|
}
|
|
}
|
|
} else if (has_above || has_left) { // one edge available
|
|
const MB_MODE_INFO *edge_mbmi = has_above ? above_mbmi : left_mbmi;
|
|
|
|
if (!is_inter_block(edge_mbmi) ||
|
|
(!CHECK_GOLDEN_OR_ALTREF(edge_mbmi->ref_frame[0]) &&
|
|
!has_second_ref(edge_mbmi)))
|
|
pred_context = 2;
|
|
else if (!has_second_ref(edge_mbmi))
|
|
pred_context = 4 * (edge_mbmi->ref_frame[0] == GOLDEN_FRAME);
|
|
else
|
|
pred_context = 3 * (edge_mbmi->ref_frame[0] == GOLDEN_FRAME ||
|
|
edge_mbmi->ref_frame[1] == GOLDEN_FRAME);
|
|
} else { // no edges available (2)
|
|
pred_context = 2;
|
|
}
|
|
|
|
assert(pred_context >= 0 && pred_context < REF_CONTEXTS);
|
|
return pred_context;
|
|
}
|
|
|
|
// For the bit to signal whether the single reference is LAST3/LAST4 or
|
|
// LAST2/LAST, knowing that it shall be either of these 2 choices.
|
|
//
|
|
// NOTE(zoeliu): The probability of ref_frame[0] is LAST3/LAST4, conditioning
|
|
// on it is either LAST3/LAST4/LAST2/LAST.
|
|
int vp10_get_pred_context_single_ref_p3(const MACROBLOCKD *xd) {
|
|
int pred_context;
|
|
const MB_MODE_INFO *const above_mbmi = xd->above_mbmi;
|
|
const MB_MODE_INFO *const left_mbmi = xd->left_mbmi;
|
|
const int has_above = xd->up_available;
|
|
const int has_left = xd->left_available;
|
|
|
|
// Note:
|
|
// The mode info data structure has a one element border above and to the
|
|
// left of the entries correpsonding to real macroblocks.
|
|
// The prediction flags in these dummy entries are initialised to 0.
|
|
if (has_above && has_left) { // both edges available
|
|
const int above_intra = !is_inter_block(above_mbmi);
|
|
const int left_intra = !is_inter_block(left_mbmi);
|
|
|
|
if (above_intra && left_intra) { // intra/intra
|
|
pred_context = 2;
|
|
} else if (above_intra || left_intra) { // intra/inter or inter/intra
|
|
const MB_MODE_INFO *edge_mbmi = above_intra ? left_mbmi : above_mbmi;
|
|
if (!has_second_ref(edge_mbmi)) {
|
|
if (CHECK_GOLDEN_OR_ALTREF(edge_mbmi->ref_frame[0]))
|
|
pred_context = 3;
|
|
else
|
|
pred_context = 4 * CHECK_LAST_OR_LAST2(edge_mbmi->ref_frame[0]);
|
|
} else {
|
|
pred_context = 1 +
|
|
2 * (CHECK_LAST_OR_LAST2(edge_mbmi->ref_frame[0]) ||
|
|
CHECK_LAST_OR_LAST2(edge_mbmi->ref_frame[1]));
|
|
}
|
|
} else { // inter/inter
|
|
const int above_has_second = has_second_ref(above_mbmi);
|
|
const int left_has_second = has_second_ref(left_mbmi);
|
|
const MV_REFERENCE_FRAME above0 = above_mbmi->ref_frame[0];
|
|
const MV_REFERENCE_FRAME above1 = above_mbmi->ref_frame[1];
|
|
const MV_REFERENCE_FRAME left0 = left_mbmi->ref_frame[0];
|
|
const MV_REFERENCE_FRAME left1 = left_mbmi->ref_frame[1];
|
|
|
|
if (above_has_second && left_has_second) {
|
|
if (above0 == left0 && above1 == left1)
|
|
pred_context = 3 * (CHECK_LAST_OR_LAST2(above0) ||
|
|
CHECK_LAST_OR_LAST2(above1) ||
|
|
CHECK_LAST_OR_LAST2(left0) ||
|
|
CHECK_LAST_OR_LAST2(left1));
|
|
else
|
|
pred_context = 2;
|
|
} else if (above_has_second || left_has_second) {
|
|
const MV_REFERENCE_FRAME rfs = !above_has_second ? above0 : left0;
|
|
const MV_REFERENCE_FRAME crf1 = above_has_second ? above0 : left0;
|
|
const MV_REFERENCE_FRAME crf2 = above_has_second ? above1 : left1;
|
|
|
|
if (CHECK_LAST_OR_LAST2(rfs))
|
|
pred_context = 3 + (CHECK_LAST_OR_LAST2(crf1) ||
|
|
CHECK_LAST_OR_LAST2(crf2));
|
|
else if (rfs == LAST3_FRAME || rfs == LAST4_FRAME)
|
|
pred_context = (CHECK_LAST_OR_LAST2(crf1) ||
|
|
CHECK_LAST_OR_LAST2(crf2));
|
|
else
|
|
pred_context = 1 + 2 * (CHECK_LAST_OR_LAST2(crf1) ||
|
|
CHECK_LAST_OR_LAST2(crf2));
|
|
} else {
|
|
if (CHECK_GOLDEN_OR_ALTREF(above0) && CHECK_GOLDEN_OR_ALTREF(left0)) {
|
|
pred_context = 2 + (above0 == left0);
|
|
} else if (CHECK_GOLDEN_OR_ALTREF(above0) ||
|
|
CHECK_GOLDEN_OR_ALTREF(left0)) {
|
|
const MV_REFERENCE_FRAME edge0 =
|
|
CHECK_GOLDEN_OR_ALTREF(above0) ? left0 : above0;
|
|
pred_context = 4 * CHECK_LAST_OR_LAST2(edge0);
|
|
} else {
|
|
pred_context = 2 * CHECK_LAST_OR_LAST2(above0) +
|
|
2 * CHECK_LAST_OR_LAST2(left0);
|
|
}
|
|
}
|
|
}
|
|
} else if (has_above || has_left) { // one edge available
|
|
const MB_MODE_INFO *edge_mbmi = has_above ? above_mbmi : left_mbmi;
|
|
|
|
if (!is_inter_block(edge_mbmi) ||
|
|
(CHECK_GOLDEN_OR_ALTREF(edge_mbmi->ref_frame[0]) &&
|
|
!has_second_ref(edge_mbmi)))
|
|
pred_context = 2;
|
|
else if (!has_second_ref(edge_mbmi))
|
|
pred_context = 4 * (CHECK_LAST_OR_LAST2(edge_mbmi->ref_frame[0]));
|
|
else
|
|
pred_context = 3 * (CHECK_LAST_OR_LAST2(edge_mbmi->ref_frame[0]) ||
|
|
CHECK_LAST_OR_LAST2(edge_mbmi->ref_frame[1]));
|
|
} else { // no edges available (2)
|
|
pred_context = 2;
|
|
}
|
|
|
|
assert(pred_context >= 0 && pred_context < REF_CONTEXTS);
|
|
return pred_context;
|
|
}
|
|
|
|
// For the bit to signal whether the single reference is LAST2_FRAME or
|
|
// LAST_FRAME, knowing that it shall be either of these 2 choices.
|
|
//
|
|
// NOTE(zoeliu): The probability of ref_frame[0] is LAST2_FRAME, conditioning
|
|
// on it is either LAST2_FRAME/LAST_FRAME.
|
|
int vp10_get_pred_context_single_ref_p4(const MACROBLOCKD *xd) {
|
|
int pred_context;
|
|
const MB_MODE_INFO *const above_mbmi = xd->above_mbmi;
|
|
const MB_MODE_INFO *const left_mbmi = xd->left_mbmi;
|
|
const int has_above = xd->up_available;
|
|
const int has_left = xd->left_available;
|
|
|
|
// Note:
|
|
// The mode info data structure has a one element border above and to the
|
|
// left of the entries correpsonding to real macroblocks.
|
|
// The prediction flags in these dummy entries are initialised to 0.
|
|
if (has_above && has_left) { // both edges available
|
|
const int above_intra = !is_inter_block(above_mbmi);
|
|
const int left_intra = !is_inter_block(left_mbmi);
|
|
|
|
if (above_intra && left_intra) { // intra/intra
|
|
pred_context = 2;
|
|
} else if (above_intra || left_intra) { // intra/inter or inter/intra
|
|
const MB_MODE_INFO *edge_mbmi = above_intra ? left_mbmi : above_mbmi;
|
|
if (!has_second_ref(edge_mbmi)) {
|
|
if (!CHECK_LAST_OR_LAST2(edge_mbmi->ref_frame[0]))
|
|
pred_context = 3;
|
|
else
|
|
pred_context = 4 * (edge_mbmi->ref_frame[0] == LAST_FRAME);
|
|
} else {
|
|
pred_context = 1 +
|
|
2 * (edge_mbmi->ref_frame[0] == LAST_FRAME ||
|
|
edge_mbmi->ref_frame[1] == LAST_FRAME);
|
|
}
|
|
} else { // inter/inter
|
|
const int above_has_second = has_second_ref(above_mbmi);
|
|
const int left_has_second = has_second_ref(left_mbmi);
|
|
const MV_REFERENCE_FRAME above0 = above_mbmi->ref_frame[0];
|
|
const MV_REFERENCE_FRAME above1 = above_mbmi->ref_frame[1];
|
|
const MV_REFERENCE_FRAME left0 = left_mbmi->ref_frame[0];
|
|
const MV_REFERENCE_FRAME left1 = left_mbmi->ref_frame[1];
|
|
|
|
if (above_has_second && left_has_second) {
|
|
if (above0 == left0 && above1 == left1)
|
|
pred_context = 3 * (above0 == LAST_FRAME || above1 == LAST_FRAME ||
|
|
left0 == LAST_FRAME || left1 == LAST_FRAME);
|
|
else
|
|
pred_context = 2;
|
|
} else if (above_has_second || left_has_second) {
|
|
const MV_REFERENCE_FRAME rfs = !above_has_second ? above0 : left0;
|
|
const MV_REFERENCE_FRAME crf1 = above_has_second ? above0 : left0;
|
|
const MV_REFERENCE_FRAME crf2 = above_has_second ? above1 : left1;
|
|
|
|
if (rfs == LAST_FRAME)
|
|
pred_context = 3 + (crf1 == LAST_FRAME || crf2 == LAST_FRAME);
|
|
else if (rfs == LAST2_FRAME)
|
|
pred_context = (crf1 == LAST_FRAME || crf2 == LAST_FRAME);
|
|
else
|
|
pred_context = 1 + 2 * (crf1 == LAST_FRAME || crf2 == LAST_FRAME);
|
|
} else {
|
|
if (!CHECK_LAST_OR_LAST2(above0) &&
|
|
!CHECK_LAST_OR_LAST2(left0)) {
|
|
pred_context = 2 + (above0 == left0);
|
|
} else if (!CHECK_LAST_OR_LAST2(above0) ||
|
|
!CHECK_LAST_OR_LAST2(left0)) {
|
|
const MV_REFERENCE_FRAME edge0 =
|
|
!CHECK_LAST_OR_LAST2(above0) ? left0 : above0;
|
|
pred_context = 4 * (edge0 == LAST_FRAME);
|
|
} else {
|
|
pred_context = 2 * (above0 == LAST_FRAME) + 2 * (left0 == LAST_FRAME);
|
|
}
|
|
}
|
|
}
|
|
} else if (has_above || has_left) { // one edge available
|
|
const MB_MODE_INFO *edge_mbmi = has_above ? above_mbmi : left_mbmi;
|
|
|
|
if (!is_inter_block(edge_mbmi) ||
|
|
(!CHECK_LAST_OR_LAST2(edge_mbmi->ref_frame[0]) &&
|
|
!has_second_ref(edge_mbmi)))
|
|
pred_context = 2;
|
|
else if (!has_second_ref(edge_mbmi))
|
|
pred_context = 4 * (edge_mbmi->ref_frame[0] == LAST_FRAME);
|
|
else
|
|
pred_context = 3 * (edge_mbmi->ref_frame[0] == LAST_FRAME ||
|
|
edge_mbmi->ref_frame[1] == LAST_FRAME);
|
|
} else { // no edges available (2)
|
|
pred_context = 2;
|
|
}
|
|
|
|
assert(pred_context >= 0 && pred_context < REF_CONTEXTS);
|
|
return pred_context;
|
|
}
|
|
|
|
// For the bit to signal whether the single reference is LAST4_FRAME or
|
|
// LAST3_FRAME, knowing that it shall be either of these 2 choices.
|
|
//
|
|
// NOTE(zoeliu): The probability of ref_frame[0] is LAST4_FRAME, conditioning
|
|
// on it is either LAST4_FRAME/LAST3_FRAME.
|
|
int vp10_get_pred_context_single_ref_p5(const MACROBLOCKD *xd) {
|
|
int pred_context;
|
|
const MB_MODE_INFO *const above_mbmi = xd->above_mbmi;
|
|
const MB_MODE_INFO *const left_mbmi = xd->left_mbmi;
|
|
const int has_above = xd->up_available;
|
|
const int has_left = xd->left_available;
|
|
|
|
// Note:
|
|
// The mode info data structure has a one element border above and to the
|
|
// left of the entries correpsonding to real macroblocks.
|
|
// The prediction flags in these dummy entries are initialised to 0.
|
|
if (has_above && has_left) { // both edges available
|
|
const int above_intra = !is_inter_block(above_mbmi);
|
|
const int left_intra = !is_inter_block(left_mbmi);
|
|
|
|
if (above_intra && left_intra) { // intra/intra
|
|
pred_context = 2;
|
|
} else if (above_intra || left_intra) { // intra/inter or inter/intra
|
|
const MB_MODE_INFO *edge_mbmi = above_intra ? left_mbmi : above_mbmi;
|
|
if (!has_second_ref(edge_mbmi)) {
|
|
if (!CHECK_LAST3_OR_LAST4(edge_mbmi->ref_frame[0]))
|
|
pred_context = 3;
|
|
else
|
|
pred_context = 4 * (edge_mbmi->ref_frame[0] == LAST3_FRAME);
|
|
} else {
|
|
pred_context = 1 +
|
|
2 * (edge_mbmi->ref_frame[0] == LAST3_FRAME ||
|
|
edge_mbmi->ref_frame[1] == LAST3_FRAME);
|
|
}
|
|
} else { // inter/inter
|
|
const int above_has_second = has_second_ref(above_mbmi);
|
|
const int left_has_second = has_second_ref(left_mbmi);
|
|
const MV_REFERENCE_FRAME above0 = above_mbmi->ref_frame[0];
|
|
const MV_REFERENCE_FRAME above1 = above_mbmi->ref_frame[1];
|
|
const MV_REFERENCE_FRAME left0 = left_mbmi->ref_frame[0];
|
|
const MV_REFERENCE_FRAME left1 = left_mbmi->ref_frame[1];
|
|
|
|
if (above_has_second && left_has_second) {
|
|
if (above0 == left0 && above1 == left1)
|
|
pred_context = 3 * (above0 == LAST3_FRAME || above1 == LAST3_FRAME ||
|
|
left0 == LAST3_FRAME || left1 == LAST3_FRAME);
|
|
else
|
|
pred_context = 2;
|
|
} else if (above_has_second || left_has_second) {
|
|
const MV_REFERENCE_FRAME rfs = !above_has_second ? above0 : left0;
|
|
const MV_REFERENCE_FRAME crf1 = above_has_second ? above0 : left0;
|
|
const MV_REFERENCE_FRAME crf2 = above_has_second ? above1 : left1;
|
|
|
|
if (rfs == LAST3_FRAME)
|
|
pred_context = 3 + (crf1 == LAST3_FRAME || crf2 == LAST3_FRAME);
|
|
else if (rfs == LAST4_FRAME)
|
|
pred_context = (crf1 == LAST3_FRAME || crf2 == LAST3_FRAME);
|
|
else
|
|
pred_context = 1 + 2 * (crf1 == LAST3_FRAME || crf2 == LAST3_FRAME);
|
|
} else {
|
|
if (!CHECK_LAST3_OR_LAST4(above0) &&
|
|
!CHECK_LAST3_OR_LAST4(left0)) {
|
|
pred_context = 2 + (above0 == left0);
|
|
} else if (!CHECK_LAST3_OR_LAST4(above0) ||
|
|
!CHECK_LAST3_OR_LAST4(left0)) {
|
|
const MV_REFERENCE_FRAME edge0 =
|
|
!CHECK_LAST3_OR_LAST4(above0) ? left0 : above0;
|
|
pred_context = 4 * (edge0 == LAST3_FRAME);
|
|
} else {
|
|
pred_context = 2 * (above0 == LAST3_FRAME) +
|
|
2 * (left0 == LAST3_FRAME);
|
|
}
|
|
}
|
|
}
|
|
} else if (has_above || has_left) { // one edge available
|
|
const MB_MODE_INFO *edge_mbmi = has_above ? above_mbmi : left_mbmi;
|
|
|
|
if (!is_inter_block(edge_mbmi) ||
|
|
(!CHECK_LAST3_OR_LAST4(edge_mbmi->ref_frame[0]) &&
|
|
!has_second_ref(edge_mbmi)))
|
|
pred_context = 2;
|
|
else if (!has_second_ref(edge_mbmi))
|
|
pred_context = 4 * (edge_mbmi->ref_frame[0] == LAST3_FRAME);
|
|
else
|
|
pred_context = 3 * (edge_mbmi->ref_frame[0] == LAST3_FRAME ||
|
|
edge_mbmi->ref_frame[1] == LAST3_FRAME);
|
|
} else { // no edges available (2)
|
|
pred_context = 2;
|
|
}
|
|
|
|
assert(pred_context >= 0 && pred_context < REF_CONTEXTS);
|
|
return pred_context;
|
|
}
|
|
|
|
#else // CONFIG_EXT_REFS
|
|
|
|
int vp10_get_pred_context_single_ref_p1(const MACROBLOCKD *xd) {
|
|
int pred_context;
|
|
const MB_MODE_INFO *const above_mbmi = xd->above_mbmi;
|
|
const MB_MODE_INFO *const left_mbmi = xd->left_mbmi;
|
|
const int has_above = xd->up_available;
|
|
const int has_left = xd->left_available;
|
|
// Note:
|
|
// The mode info data structure has a one element border above and to the
|
|
// left of the entries corresponding to real macroblocks.
|
|
// The prediction flags in these dummy entries are initialized to 0.
|
|
if (has_above && has_left) { // both edges available
|
|
const int above_intra = !is_inter_block(above_mbmi);
|
|
const int left_intra = !is_inter_block(left_mbmi);
|
|
|
|
if (above_intra && left_intra) { // intra/intra
|
|
pred_context = 2;
|
|
} else if (above_intra || left_intra) { // intra/inter or inter/intra
|
|
const MB_MODE_INFO *edge_mbmi = above_intra ? left_mbmi : above_mbmi;
|
|
if (!has_second_ref(edge_mbmi))
|
|
pred_context = 4 * (edge_mbmi->ref_frame[0] == LAST_FRAME);
|
|
else
|
|
pred_context = 1 + (edge_mbmi->ref_frame[0] == LAST_FRAME ||
|
|
edge_mbmi->ref_frame[1] == LAST_FRAME);
|
|
} else { // inter/inter
|
|
const int above_has_second = has_second_ref(above_mbmi);
|
|
const int left_has_second = has_second_ref(left_mbmi);
|
|
const MV_REFERENCE_FRAME above0 = above_mbmi->ref_frame[0];
|
|
const MV_REFERENCE_FRAME above1 = above_mbmi->ref_frame[1];
|
|
const MV_REFERENCE_FRAME left0 = left_mbmi->ref_frame[0];
|
|
const MV_REFERENCE_FRAME left1 = left_mbmi->ref_frame[1];
|
|
|
|
if (above_has_second && left_has_second) {
|
|
pred_context = 1 + (above0 == LAST_FRAME || above1 == LAST_FRAME ||
|
|
left0 == LAST_FRAME || left1 == LAST_FRAME);
|
|
} else if (above_has_second || left_has_second) {
|
|
const MV_REFERENCE_FRAME rfs = !above_has_second ? above0 : left0;
|
|
const MV_REFERENCE_FRAME crf1 = above_has_second ? above0 : left0;
|
|
const MV_REFERENCE_FRAME crf2 = above_has_second ? above1 : left1;
|
|
|
|
if (rfs == LAST_FRAME)
|
|
pred_context = 3 + (crf1 == LAST_FRAME || crf2 == LAST_FRAME);
|
|
else
|
|
pred_context = (crf1 == LAST_FRAME || crf2 == LAST_FRAME);
|
|
} else {
|
|
pred_context = 2 * (above0 == LAST_FRAME) + 2 * (left0 == LAST_FRAME);
|
|
}
|
|
}
|
|
} else if (has_above || has_left) { // one edge available
|
|
const MB_MODE_INFO *edge_mbmi = has_above ? above_mbmi : left_mbmi;
|
|
if (!is_inter_block(edge_mbmi)) { // intra
|
|
pred_context = 2;
|
|
} 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
|
|
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;
|
|
}
|
|
|
|
assert(pred_context >= 0 && pred_context < REF_CONTEXTS);
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|
return pred_context;
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|
}
|
|
|
|
int vp10_get_pred_context_single_ref_p2(const MACROBLOCKD *xd) {
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|
int pred_context;
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|
const MB_MODE_INFO *const above_mbmi = xd->above_mbmi;
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|
const MB_MODE_INFO *const left_mbmi = xd->left_mbmi;
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|
const int has_above = xd->up_available;
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|
const int has_left = xd->left_available;
|
|
|
|
// Note:
|
|
// The mode info data structure has a one element border above and to the
|
|
// left of the entries corresponding to real macroblocks.
|
|
// The prediction flags in these dummy entries are initialized to 0.
|
|
if (has_above && has_left) { // both edges available
|
|
const int above_intra = !is_inter_block(above_mbmi);
|
|
const int left_intra = !is_inter_block(left_mbmi);
|
|
|
|
if (above_intra && left_intra) { // intra/intra
|
|
pred_context = 2;
|
|
} else if (above_intra || left_intra) { // intra/inter or inter/intra
|
|
const MB_MODE_INFO *edge_mbmi = above_intra ? left_mbmi : above_mbmi;
|
|
if (!has_second_ref(edge_mbmi)) {
|
|
if (edge_mbmi->ref_frame[0] == LAST_FRAME)
|
|
pred_context = 3;
|
|
else
|
|
pred_context = 4 * (edge_mbmi->ref_frame[0] == GOLDEN_FRAME);
|
|
} else {
|
|
pred_context = 1 + 2 * (edge_mbmi->ref_frame[0] == GOLDEN_FRAME ||
|
|
edge_mbmi->ref_frame[1] == GOLDEN_FRAME);
|
|
}
|
|
} else { // inter/inter
|
|
const int above_has_second = has_second_ref(above_mbmi);
|
|
const int left_has_second = has_second_ref(left_mbmi);
|
|
const MV_REFERENCE_FRAME above0 = above_mbmi->ref_frame[0];
|
|
const MV_REFERENCE_FRAME above1 = above_mbmi->ref_frame[1];
|
|
const MV_REFERENCE_FRAME left0 = left_mbmi->ref_frame[0];
|
|
const MV_REFERENCE_FRAME left1 = left_mbmi->ref_frame[1];
|
|
|
|
if (above_has_second && left_has_second) {
|
|
if (above0 == left0 && above1 == left1)
|
|
pred_context = 3 * (above0 == GOLDEN_FRAME ||
|
|
above1 == GOLDEN_FRAME ||
|
|
left0 == GOLDEN_FRAME ||
|
|
left1 == GOLDEN_FRAME);
|
|
else
|
|
pred_context = 2;
|
|
} else if (above_has_second || left_has_second) {
|
|
const MV_REFERENCE_FRAME rfs = !above_has_second ? above0 : left0;
|
|
const MV_REFERENCE_FRAME crf1 = above_has_second ? above0 : left0;
|
|
const MV_REFERENCE_FRAME crf2 = above_has_second ? above1 : left1;
|
|
|
|
if (rfs == GOLDEN_FRAME)
|
|
pred_context = 3 + (crf1 == GOLDEN_FRAME || crf2 == GOLDEN_FRAME);
|
|
else if (rfs == ALTREF_FRAME)
|
|
pred_context = crf1 == GOLDEN_FRAME || crf2 == GOLDEN_FRAME;
|
|
else
|
|
pred_context = 1 + 2 * (crf1 == GOLDEN_FRAME || crf2 == GOLDEN_FRAME);
|
|
} else {
|
|
if (above0 == LAST_FRAME && left0 == LAST_FRAME) {
|
|
pred_context = 3;
|
|
} else if (above0 == LAST_FRAME || left0 == LAST_FRAME) {
|
|
const MV_REFERENCE_FRAME edge0 = (above0 == LAST_FRAME) ? left0
|
|
: above0;
|
|
pred_context = 4 * (edge0 == GOLDEN_FRAME);
|
|
} else {
|
|
pred_context = 2 * (above0 == GOLDEN_FRAME) +
|
|
2 * (left0 == GOLDEN_FRAME);
|
|
}
|
|
}
|
|
}
|
|
} else if (has_above || has_left) { // one edge available
|
|
const MB_MODE_INFO *edge_mbmi = has_above ? above_mbmi : left_mbmi;
|
|
|
|
if (!is_inter_block(edge_mbmi) ||
|
|
(edge_mbmi->ref_frame[0] == LAST_FRAME && !has_second_ref(edge_mbmi)))
|
|
pred_context = 2;
|
|
else if (!has_second_ref(edge_mbmi))
|
|
pred_context = 4 * (edge_mbmi->ref_frame[0] == GOLDEN_FRAME);
|
|
else
|
|
pred_context = 3 * (edge_mbmi->ref_frame[0] == GOLDEN_FRAME ||
|
|
edge_mbmi->ref_frame[1] == GOLDEN_FRAME);
|
|
} else { // no edges available (2)
|
|
pred_context = 2;
|
|
}
|
|
assert(pred_context >= 0 && pred_context < REF_CONTEXTS);
|
|
return pred_context;
|
|
}
|
|
|
|
#endif // CONFIG_EXT_REFS
|