de80da39dc
Further simplification of mvref search to return only the top two candidates. Distance weights removed as the test order reflects distance anyway. Change-Id: I0518cab7280258fec2058670add4f853fab7b855
54 lines
1.8 KiB
C
54 lines
1.8 KiB
C
/*
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* Copyright (c) 2010 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_findnearmv.h"
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#include "vp9/common/vp9_sadmxn.h"
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#include "vp9/common/vp9_subpelvar.h"
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const uint8_t vp9_mbsplit_offset[4][16] = {
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{ 0, 8, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
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{ 0, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
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{ 0, 2, 8, 10, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
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{ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15}
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};
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static void lower_mv_precision(int_mv *mv, int usehp) {
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if (!usehp || !vp9_use_nmv_hp(&mv->as_mv)) {
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if (mv->as_mv.row & 1)
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mv->as_mv.row += (mv->as_mv.row > 0 ? -1 : 1);
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if (mv->as_mv.col & 1)
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mv->as_mv.col += (mv->as_mv.col > 0 ? -1 : 1);
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}
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}
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vp9_prob *vp9_mv_ref_probs(VP9_COMMON *pc, vp9_prob p[4], int context) {
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p[0] = pc->fc.vp9_mode_contexts[context][0];
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p[1] = pc->fc.vp9_mode_contexts[context][1];
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p[2] = pc->fc.vp9_mode_contexts[context][2];
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p[3] = pc->fc.vp9_mode_contexts[context][3];
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return p;
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}
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void vp9_find_best_ref_mvs(MACROBLOCKD *xd,
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int_mv *mvlist,
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int_mv *nearest,
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int_mv *near) {
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int i;
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// Make sure all the candidates are properly clamped etc
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for (i = 0; i < MAX_MV_REF_CANDIDATES; ++i) {
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lower_mv_precision(&mvlist[i], xd->allow_high_precision_mv);
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clamp_mv2(&mvlist[i], xd);
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}
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*nearest = mvlist[0];
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*near = mvlist[1];
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}
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