74 lines
2.0 KiB
C
74 lines
2.0 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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#ifndef __INC_FINDNEARMV_H
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#define __INC_FINDNEARMV_H
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#include "mv.h"
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#include "blockd.h"
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#include "modecont.h"
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#include "treecoder.h"
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typedef union
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{
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unsigned int as_int;
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MV as_mv;
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} int_mv; /* facilitates rapid equality tests */
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static void mv_bias(int refmb_ref_frame_sign_bias, int refframe, int_mv *mvp, const int *ref_frame_sign_bias)
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{
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MV xmv;
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xmv = mvp->as_mv;
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if (refmb_ref_frame_sign_bias != ref_frame_sign_bias[refframe])
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{
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xmv.row *= -1;
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xmv.col *= -1;
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}
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mvp->as_mv = xmv;
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}
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#define LEFT_TOP_MARGIN (16 << 3)
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#define RIGHT_BOTTOM_MARGIN (16 << 3)
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static void vp8_clamp_mv(MV *mv, const MACROBLOCKD *xd)
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{
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if (mv->col < (xd->mb_to_left_edge - LEFT_TOP_MARGIN))
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mv->col = xd->mb_to_left_edge - LEFT_TOP_MARGIN;
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else if (mv->col > xd->mb_to_right_edge + RIGHT_BOTTOM_MARGIN)
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mv->col = xd->mb_to_right_edge + RIGHT_BOTTOM_MARGIN;
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if (mv->row < (xd->mb_to_top_edge - LEFT_TOP_MARGIN))
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mv->row = xd->mb_to_top_edge - LEFT_TOP_MARGIN;
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else if (mv->row > xd->mb_to_bottom_edge + RIGHT_BOTTOM_MARGIN)
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mv->row = xd->mb_to_bottom_edge + RIGHT_BOTTOM_MARGIN;
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}
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void vp8_find_near_mvs
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(
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MACROBLOCKD *xd,
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const MODE_INFO *here,
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MV *nearest, MV *nearby, MV *best,
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int near_mv_ref_cts[4],
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int refframe,
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int *ref_frame_sign_bias
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);
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vp8_prob *vp8_mv_ref_probs(
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vp8_prob p[VP8_MVREFS-1], const int near_mv_ref_ct[4]
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);
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const B_MODE_INFO *vp8_left_bmi(const MODE_INFO *cur_mb, int b);
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const B_MODE_INFO *vp8_above_bmi(const MODE_INFO *cur_mb, int b, int mi_stride);
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#endif
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