chromium/third_party/libvpx/source/libvpx/vp8/common/findnearmv.c

/*
 *  Copyright (c) 2010 The WebM project authors. All Rights Reserved.
 *
 *  Use of this source code is governed by a BSD-style license
 *  that can be found in the LICENSE file in the root of the source
 *  tree. An additional intellectual property rights grant can be found
 *  in the file PATENTS.  All contributing project authors may
 *  be found in the AUTHORS file in the root of the source tree.
 */

#include "findnearmv.h"

const unsigned char vp8_mbsplit_offset[4][16] = …;

/* Predict motion vectors using those from already-decoded nearby blocks.
   Note that we only consider one 4x4 subblock from each candidate 16x16
   macroblock.   */
void vp8_find_near_mvs(MACROBLOCKD *xd, const MODE_INFO *here, int_mv *nearest,
                       int_mv *nearby, int_mv *best_mv, int near_mv_ref_cnts[4],
                       int refframe, int *ref_frame_sign_bias) { … }

static void invert_and_clamp_mvs(int_mv *inv, int_mv *src, MACROBLOCKD *xd) { … }

int vp8_find_near_mvs_bias(MACROBLOCKD *xd, const MODE_INFO *here,
                           int_mv mode_mv_sb[2][MB_MODE_COUNT],
                           int_mv best_mv_sb[2], int cnt[4], int refframe,
                           int *ref_frame_sign_bias) { … }

vp8_prob *vp8_mv_ref_probs(vp8_prob p[VP8_MVREFS - 1],
                           const int near_mv_ref_ct[4]) { … }