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-rw-r--r--vp9/common/vp9_findnearmv.h183
1 files changed, 183 insertions, 0 deletions
diff --git a/vp9/common/vp9_findnearmv.h b/vp9/common/vp9_findnearmv.h
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+++ b/vp9/common/vp9_findnearmv.h
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+/*
+ * 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.
+ */
+
+
+#ifndef __INC_FINDNEARMV_H
+#define __INC_FINDNEARMV_H
+
+#include "vp9_mv.h"
+#include "vp9_blockd.h"
+#include "vp9_treecoder.h"
+#include "vp9_onyxc_int.h"
+
+/* check a list of motion vectors by sad score using a number rows of pixels
+ * above and a number cols of pixels in the left to select the one with best
+ * score to use as ref motion vector
+ */
+void vp9_find_best_ref_mvs(MACROBLOCKD *xd,
+ unsigned char *ref_y_buffer,
+ int ref_y_stride,
+ int_mv *mvlist,
+ int_mv *best_mv,
+ int_mv *nearest,
+ int_mv *near);
+
+static void mv_bias(int refmb_ref_frame_sign_bias, int refframe, int_mv *mvp, const int *ref_frame_sign_bias) {
+ MV xmv;
+ xmv = mvp->as_mv;
+
+ if (refmb_ref_frame_sign_bias != ref_frame_sign_bias[refframe]) {
+ xmv.row *= -1;
+ xmv.col *= -1;
+ }
+
+ mvp->as_mv = xmv;
+}
+
+#define LEFT_TOP_MARGIN (16 << 3)
+#define RIGHT_BOTTOM_MARGIN (16 << 3)
+
+static void clamp_mv(int_mv *mv,
+ int mb_to_left_edge,
+ int mb_to_right_edge,
+ int mb_to_top_edge,
+ int mb_to_bottom_edge) {
+ mv->as_mv.col = (mv->as_mv.col < mb_to_left_edge) ?
+ mb_to_left_edge : mv->as_mv.col;
+ mv->as_mv.col = (mv->as_mv.col > mb_to_right_edge) ?
+ mb_to_right_edge : mv->as_mv.col;
+ mv->as_mv.row = (mv->as_mv.row < mb_to_top_edge) ?
+ mb_to_top_edge : mv->as_mv.row;
+ mv->as_mv.row = (mv->as_mv.row > mb_to_bottom_edge) ?
+ mb_to_bottom_edge : mv->as_mv.row;
+}
+
+static void clamp_mv2(int_mv *mv, const MACROBLOCKD *xd) {
+ clamp_mv(mv,
+ xd->mb_to_left_edge - LEFT_TOP_MARGIN,
+ xd->mb_to_right_edge + RIGHT_BOTTOM_MARGIN,
+ xd->mb_to_top_edge - LEFT_TOP_MARGIN,
+ xd->mb_to_bottom_edge + RIGHT_BOTTOM_MARGIN);
+}
+
+static unsigned int check_mv_bounds(int_mv *mv,
+ int mb_to_left_edge,
+ int mb_to_right_edge,
+ int mb_to_top_edge,
+ int mb_to_bottom_edge) {
+ return (mv->as_mv.col < mb_to_left_edge) ||
+ (mv->as_mv.col > mb_to_right_edge) ||
+ (mv->as_mv.row < mb_to_top_edge) ||
+ (mv->as_mv.row > mb_to_bottom_edge);
+}
+
+vp9_prob *vp9_mv_ref_probs(VP9_COMMON *pc,
+ vp9_prob p[VP9_MVREFS - 1],
+ const int context);
+
+extern const unsigned char vp9_mbsplit_offset[4][16];
+
+static int left_block_mv(const MODE_INFO *cur_mb, int b) {
+ if (!(b & 3)) {
+ /* On L edge, get from MB to left of us */
+ --cur_mb;
+
+ if (cur_mb->mbmi.mode != SPLITMV)
+ return cur_mb->mbmi.mv[0].as_int;
+ b += 4;
+ }
+
+ return (cur_mb->bmi + b - 1)->as_mv.first.as_int;
+}
+
+static int left_block_second_mv(const MODE_INFO *cur_mb, int b) {
+ if (!(b & 3)) {
+ /* On L edge, get from MB to left of us */
+ --cur_mb;
+
+ if (cur_mb->mbmi.mode != SPLITMV)
+ return cur_mb->mbmi.second_ref_frame > 0 ?
+ cur_mb->mbmi.mv[1].as_int : cur_mb->mbmi.mv[0].as_int;
+ b += 4;
+ }
+
+ return cur_mb->mbmi.second_ref_frame > 0 ?
+ (cur_mb->bmi + b - 1)->as_mv.second.as_int :
+ (cur_mb->bmi + b - 1)->as_mv.first.as_int;
+}
+
+static int above_block_mv(const MODE_INFO *cur_mb, int b, int mi_stride) {
+ if (!(b >> 2)) {
+ /* On top edge, get from MB above us */
+ cur_mb -= mi_stride;
+
+ if (cur_mb->mbmi.mode != SPLITMV)
+ return cur_mb->mbmi.mv[0].as_int;
+ b += 16;
+ }
+
+ return (cur_mb->bmi + b - 4)->as_mv.first.as_int;
+}
+
+static int above_block_second_mv(const MODE_INFO *cur_mb, int b, int mi_stride) {
+ if (!(b >> 2)) {
+ /* On top edge, get from MB above us */
+ cur_mb -= mi_stride;
+
+ if (cur_mb->mbmi.mode != SPLITMV)
+ return cur_mb->mbmi.second_ref_frame > 0 ?
+ cur_mb->mbmi.mv[1].as_int : cur_mb->mbmi.mv[0].as_int;
+ b += 16;
+ }
+
+ return cur_mb->mbmi.second_ref_frame > 0 ?
+ (cur_mb->bmi + b - 4)->as_mv.second.as_int :
+ (cur_mb->bmi + b - 4)->as_mv.first.as_int;
+}
+
+static B_PREDICTION_MODE left_block_mode(const MODE_INFO *cur_mb, int b) {
+ if (!(b & 3)) {
+ /* On L edge, get from MB to left of us */
+ --cur_mb;
+
+ if (cur_mb->mbmi.mode < I8X8_PRED) {
+ return pred_mode_conv(cur_mb->mbmi.mode);
+ } else if (cur_mb->mbmi.mode == I8X8_PRED) {
+ return pred_mode_conv((cur_mb->bmi + 3 + b)->as_mode.first);
+ } else if (cur_mb->mbmi.mode == B_PRED) {
+ return ((cur_mb->bmi + 3 + b)->as_mode.first);
+ } else {
+ return B_DC_PRED;
+ }
+ }
+ return (cur_mb->bmi + b - 1)->as_mode.first;
+}
+
+static B_PREDICTION_MODE above_block_mode(const MODE_INFO *cur_mb,
+ int b, int mi_stride) {
+ if (!(b >> 2)) {
+ /* On top edge, get from MB above us */
+ cur_mb -= mi_stride;
+
+ if (cur_mb->mbmi.mode < I8X8_PRED) {
+ return pred_mode_conv(cur_mb->mbmi.mode);
+ } else if (cur_mb->mbmi.mode == I8X8_PRED) {
+ return pred_mode_conv((cur_mb->bmi + 12 + b)->as_mode.first);
+ } else if (cur_mb->mbmi.mode == B_PRED) {
+ return ((cur_mb->bmi + 12 + b)->as_mode.first);
+ } else {
+ return B_DC_PRED;
+ }
+ }
+
+ return (cur_mb->bmi + b - 4)->as_mode.first;
+}
+
+#endif
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