diff options
Diffstat (limited to 'thirdparty/libvpx/vp8/common/findnearmv.c')
| -rw-r--r-- | thirdparty/libvpx/vp8/common/findnearmv.c | 193 |
1 files changed, 0 insertions, 193 deletions
diff --git a/thirdparty/libvpx/vp8/common/findnearmv.c b/thirdparty/libvpx/vp8/common/findnearmv.c deleted file mode 100644 index e8ee40f56c..0000000000 --- a/thirdparty/libvpx/vp8/common/findnearmv.c +++ /dev/null @@ -1,193 +0,0 @@ -/* - * 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] = { - { 0, 8, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}, - { 0, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}, - { 0, 2, 8, 10, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}, - { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15} -}; - -/* 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 cnt[4], - int refframe, - int *ref_frame_sign_bias -) -{ - const MODE_INFO *above = here - xd->mode_info_stride; - const MODE_INFO *left = here - 1; - const MODE_INFO *aboveleft = above - 1; - int_mv near_mvs[4]; - int_mv *mv = near_mvs; - int *cntx = cnt; - enum {CNT_INTRA, CNT_NEAREST, CNT_NEAR, CNT_SPLITMV}; - - /* Zero accumulators */ - mv[0].as_int = mv[1].as_int = mv[2].as_int = 0; - cnt[0] = cnt[1] = cnt[2] = cnt[3] = 0; - - /* Process above */ - if (above->mbmi.ref_frame != INTRA_FRAME) - { - if (above->mbmi.mv.as_int) - { - (++mv)->as_int = above->mbmi.mv.as_int; - mv_bias(ref_frame_sign_bias[above->mbmi.ref_frame], refframe, mv, ref_frame_sign_bias); - ++cntx; - } - - *cntx += 2; - } - - /* Process left */ - if (left->mbmi.ref_frame != INTRA_FRAME) - { - if (left->mbmi.mv.as_int) - { - int_mv this_mv; - - this_mv.as_int = left->mbmi.mv.as_int; - mv_bias(ref_frame_sign_bias[left->mbmi.ref_frame], refframe, &this_mv, ref_frame_sign_bias); - - if (this_mv.as_int != mv->as_int) - { - (++mv)->as_int = this_mv.as_int; - ++cntx; - } - - *cntx += 2; - } - else - cnt[CNT_INTRA] += 2; - } - - /* Process above left */ - if (aboveleft->mbmi.ref_frame != INTRA_FRAME) - { - if (aboveleft->mbmi.mv.as_int) - { - int_mv this_mv; - - this_mv.as_int = aboveleft->mbmi.mv.as_int; - mv_bias(ref_frame_sign_bias[aboveleft->mbmi.ref_frame], refframe, &this_mv, ref_frame_sign_bias); - - if (this_mv.as_int != mv->as_int) - { - (++mv)->as_int = this_mv.as_int; - ++cntx; - } - - *cntx += 1; - } - else - cnt[CNT_INTRA] += 1; - } - - /* If we have three distinct MV's ... */ - if (cnt[CNT_SPLITMV]) - { - /* See if above-left MV can be merged with NEAREST */ - if (mv->as_int == near_mvs[CNT_NEAREST].as_int) - cnt[CNT_NEAREST] += 1; - } - - cnt[CNT_SPLITMV] = ((above->mbmi.mode == SPLITMV) - + (left->mbmi.mode == SPLITMV)) * 2 - + (aboveleft->mbmi.mode == SPLITMV); - - /* Swap near and nearest if necessary */ - if (cnt[CNT_NEAR] > cnt[CNT_NEAREST]) - { - int tmp; - tmp = cnt[CNT_NEAREST]; - cnt[CNT_NEAREST] = cnt[CNT_NEAR]; - cnt[CNT_NEAR] = tmp; - tmp = near_mvs[CNT_NEAREST].as_int; - near_mvs[CNT_NEAREST].as_int = near_mvs[CNT_NEAR].as_int; - near_mvs[CNT_NEAR].as_int = tmp; - } - - /* Use near_mvs[0] to store the "best" MV */ - if (cnt[CNT_NEAREST] >= cnt[CNT_INTRA]) - near_mvs[CNT_INTRA] = near_mvs[CNT_NEAREST]; - - /* Set up return values */ - best_mv->as_int = near_mvs[0].as_int; - nearest->as_int = near_mvs[CNT_NEAREST].as_int; - nearby->as_int = near_mvs[CNT_NEAR].as_int; -} - - -static void invert_and_clamp_mvs(int_mv *inv, int_mv *src, MACROBLOCKD *xd) -{ - inv->as_mv.row = src->as_mv.row * -1; - inv->as_mv.col = src->as_mv.col * -1; - vp8_clamp_mv2(inv, xd); - vp8_clamp_mv2(src, 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 -) -{ - int sign_bias = ref_frame_sign_bias[refframe]; - - vp8_find_near_mvs(xd, - here, - &mode_mv_sb[sign_bias][NEARESTMV], - &mode_mv_sb[sign_bias][NEARMV], - &best_mv_sb[sign_bias], - cnt, - refframe, - ref_frame_sign_bias); - - invert_and_clamp_mvs(&mode_mv_sb[!sign_bias][NEARESTMV], - &mode_mv_sb[sign_bias][NEARESTMV], xd); - invert_and_clamp_mvs(&mode_mv_sb[!sign_bias][NEARMV], - &mode_mv_sb[sign_bias][NEARMV], xd); - invert_and_clamp_mvs(&best_mv_sb[!sign_bias], - &best_mv_sb[sign_bias], xd); - - return sign_bias; -} - - -vp8_prob *vp8_mv_ref_probs( - vp8_prob p[VP8_MVREFS-1], const int near_mv_ref_ct[4] -) -{ - p[0] = vp8_mode_contexts [near_mv_ref_ct[0]] [0]; - p[1] = vp8_mode_contexts [near_mv_ref_ct[1]] [1]; - p[2] = vp8_mode_contexts [near_mv_ref_ct[2]] [2]; - p[3] = vp8_mode_contexts [near_mv_ref_ct[3]] [3]; - /*p[3] = vp8_mode_contexts [near_mv_ref_ct[1] + near_mv_ref_ct[2] + near_mv_ref_ct[3]] [3];*/ - return p; -} - |