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Diffstat (limited to 'media/libvpx/vp8/common/findnearmv.h')
| -rw-r--r-- | media/libvpx/vp8/common/findnearmv.h | 190 |
1 files changed, 190 insertions, 0 deletions
diff --git a/media/libvpx/vp8/common/findnearmv.h b/media/libvpx/vp8/common/findnearmv.h new file mode 100644 index 000000000..3c8c0506f --- /dev/null +++ b/media/libvpx/vp8/common/findnearmv.h @@ -0,0 +1,190 @@ +/* + * 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 VP8_COMMON_FINDNEARMV_H_ +#define VP8_COMMON_FINDNEARMV_H_ + +#include "mv.h" +#include "blockd.h" +#include "modecont.h" +#include "treecoder.h" + +#ifdef __cplusplus +extern "C" { +#endif + + +static void mv_bias(int refmb_ref_frame_sign_bias, int refframe, int_mv *mvp, + const int *ref_frame_sign_bias) +{ + if (refmb_ref_frame_sign_bias != ref_frame_sign_bias[refframe]) + { + mvp->as_mv.row *= -1; + mvp->as_mv.col *= -1; + } +} + +#define LEFT_TOP_MARGIN (16 << 3) +#define RIGHT_BOTTOM_MARGIN (16 << 3) +static void vp8_clamp_mv2(int_mv *mv, const MACROBLOCKD *xd) +{ + if (mv->as_mv.col < (xd->mb_to_left_edge - LEFT_TOP_MARGIN)) + mv->as_mv.col = xd->mb_to_left_edge - LEFT_TOP_MARGIN; + else if (mv->as_mv.col > xd->mb_to_right_edge + RIGHT_BOTTOM_MARGIN) + mv->as_mv.col = xd->mb_to_right_edge + RIGHT_BOTTOM_MARGIN; + + if (mv->as_mv.row < (xd->mb_to_top_edge - LEFT_TOP_MARGIN)) + mv->as_mv.row = xd->mb_to_top_edge - LEFT_TOP_MARGIN; + else if (mv->as_mv.row > xd->mb_to_bottom_edge + RIGHT_BOTTOM_MARGIN) + mv->as_mv.row = xd->mb_to_bottom_edge + RIGHT_BOTTOM_MARGIN; +} + +static void vp8_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 unsigned int vp8_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) +{ + unsigned int need_to_clamp; + need_to_clamp = (mv->as_mv.col < mb_to_left_edge); + need_to_clamp |= (mv->as_mv.col > mb_to_right_edge); + need_to_clamp |= (mv->as_mv.row < mb_to_top_edge); + need_to_clamp |= (mv->as_mv.row > mb_to_bottom_edge); + return need_to_clamp; +} + +void vp8_find_near_mvs +( + MACROBLOCKD *xd, + const MODE_INFO *here, + int_mv *nearest, int_mv *nearby, int_mv *best, + int near_mv_ref_cts[4], + int refframe, + int *ref_frame_sign_bias +); + + +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] +); + +extern const unsigned char vp8_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.as_int; + b += 4; + } + + return (cur_mb->bmi + b - 1)->mv.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.as_int; + b += 16; + } + + return (cur_mb->bmi + (b - 4))->mv.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; + switch (cur_mb->mbmi.mode) + { + case B_PRED: + return (cur_mb->bmi + b + 3)->as_mode; + case DC_PRED: + return B_DC_PRED; + case V_PRED: + return B_VE_PRED; + case H_PRED: + return B_HE_PRED; + case TM_PRED: + return B_TM_PRED; + default: + return B_DC_PRED; + } + } + + return (cur_mb->bmi + b - 1)->as_mode; +} + +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; + + switch (cur_mb->mbmi.mode) + { + case B_PRED: + return (cur_mb->bmi + b + 12)->as_mode; + case DC_PRED: + return B_DC_PRED; + case V_PRED: + return B_VE_PRED; + case H_PRED: + return B_HE_PRED; + case TM_PRED: + return B_TM_PRED; + default: + return B_DC_PRED; + } + } + + return (cur_mb->bmi + b - 4)->as_mode; +} + +#ifdef __cplusplus +} // extern "C" +#endif + +#endif // VP8_COMMON_FINDNEARMV_H_ |