void vp9_find_mv_refs_idx(const VP9_COMMON *cm, const MACROBLOCKD *xd,
const TileInfo *const tile,
MODE_INFO *mi, const MODE_INFO *prev_mi,
MV_REFERENCE_FRAME ref_frame,
int_mv *mv_ref_list,
int block_idx,
int mi_row, int mi_col) {
const int *ref_sign_bias = cm->ref_frame_sign_bias;
int i, refmv_count = 0;
const MV *const mv_ref_search = mv_ref_blocks[mi->mbmi.sb_type];
const MB_MODE_INFO *const prev_mbmi = prev_mi ? &prev_mi->mbmi : NULL;
int different_ref_found = 0;
int context_counter = 0;
vpx_memset(mv_ref_list, 0, sizeof(*mv_ref_list) * MAX_MV_REF_CANDIDATES);
for (i = 0; i < 2; ++i) {
const MV *const mv_ref = &mv_ref_search[i];
if (is_inside(tile, mi_col, mi_row, cm->mi_rows, mv_ref)) {
const MODE_INFO *const candidate_mi = xd->mi_8x8[mv_ref->col + mv_ref->row
* xd->mode_info_stride];
const MB_MODE_INFO *const candidate = &candidate_mi->mbmi;
context_counter += mode_2_counter[candidate->mode];
if (candidate->ref_frame[0] == ref_frame) {
ADD_MV_REF_LIST(get_sub_block_mv(candidate_mi, 0,
mv_ref->col, block_idx));
different_ref_found = candidate->ref_frame[1] != ref_frame;
} else {
if (candidate->ref_frame[1] == ref_frame)
ADD_MV_REF_LIST(get_sub_block_mv(candidate_mi, 1,
mv_ref->col, block_idx));
different_ref_found = 1;
}
}
}
for (; i < MVREF_NEIGHBOURS; ++i) {
const MV *const mv_ref = &mv_ref_search[i];
if (is_inside(tile, mi_col, mi_row, cm->mi_rows, mv_ref)) {
const MB_MODE_INFO *const candidate = &xd->mi_8x8[mv_ref->col +
mv_ref->row
* xd->mode_info_stride]->mbmi;
if (candidate->ref_frame[0] == ref_frame) {
ADD_MV_REF_LIST(candidate->mv[0]);
different_ref_found = candidate->ref_frame[1] != ref_frame;
} else {
if (candidate->ref_frame[1] == ref_frame)
ADD_MV_REF_LIST(candidate->mv[1]);
different_ref_found = 1;
}
}
}
if (prev_mbmi) {
if (prev_mbmi->ref_frame[0] == ref_frame)
ADD_MV_REF_LIST(prev_mbmi->mv[0]);
else if (prev_mbmi->ref_frame[1] == ref_frame)
ADD_MV_REF_LIST(prev_mbmi->mv[1]);
}
if (different_ref_found) {
for (i = 0; i < MVREF_NEIGHBOURS; ++i) {
const MV *mv_ref = &mv_ref_search[i];
if (is_inside(tile, mi_col, mi_row, cm->mi_rows, mv_ref)) {
const MB_MODE_INFO *const candidate = &xd->mi_8x8[mv_ref->col +
mv_ref->row
* xd->mode_info_stride]->mbmi;
if (is_inter_block(candidate))
IF_DIFF_REF_FRAME_ADD_MV(candidate);
}
}
}
if (prev_mbmi && is_inter_block(prev_mbmi))
IF_DIFF_REF_FRAME_ADD_MV(prev_mbmi);
Done:
mi->mbmi.mode_context[ref_frame] = counter_to_context[context_counter];
for (i = 0; i < MAX_MV_REF_CANDIDATES; ++i)
clamp_mv_ref(&mv_ref_list[i].as_mv, xd);
}
// This function searches the neighbourhood of a given MB/SB
// to try and find candidate reference vectors.
static void find_mv_refs_idx(const VP9_COMMON *cm, const MACROBLOCKD *xd,
const TileInfo *const tile,
MODE_INFO *mi, MV_REFERENCE_FRAME ref_frame,
int_mv *mv_ref_list,
int block, int mi_row, int mi_col) {
const int *ref_sign_bias = cm->ref_frame_sign_bias;
int i, refmv_count = 0;
const MODE_INFO *prev_mi = cm->prev_mi
? cm->prev_mi_grid_visible[mi_row * xd->mi_stride + mi_col]
: NULL;
const MB_MODE_INFO *const prev_mbmi = prev_mi ? &prev_mi->mbmi : NULL;
const POSITION *const mv_ref_search = mv_ref_blocks[mi->mbmi.sb_type];
int different_ref_found = 0;
int context_counter = 0;
// Blank the reference vector list
vpx_memset(mv_ref_list, 0, sizeof(*mv_ref_list) * MAX_MV_REF_CANDIDATES);
// The nearest 2 blocks are treated differently
// if the size < 8x8 we get the mv from the bmi substructure,
// and we also need to keep a mode count.
for (i = 0; i < 2; ++i) {
const POSITION *const mv_ref = &mv_ref_search[i];
if (is_inside(tile, mi_col, mi_row, cm->mi_rows, mv_ref)) {
const MODE_INFO *const candidate_mi = xd->mi[mv_ref->col + mv_ref->row *
xd->mi_stride];
const MB_MODE_INFO *const candidate = &candidate_mi->mbmi;
// Keep counts for entropy encoding.
context_counter += mode_2_counter[candidate->mode];
different_ref_found = 1;
if (candidate->ref_frame[0] == ref_frame)
ADD_MV_REF_LIST(get_sub_block_mv(candidate_mi, 0, mv_ref->col, block));
else if (candidate->ref_frame[1] == ref_frame)
ADD_MV_REF_LIST(get_sub_block_mv(candidate_mi, 1, mv_ref->col, block));
}
}
// Check the rest of the neighbors in much the same way
// as before except we don't need to keep track of sub blocks or
// mode counts.
for (; i < MVREF_NEIGHBOURS; ++i) {
const POSITION *const mv_ref = &mv_ref_search[i];
if (is_inside(tile, mi_col, mi_row, cm->mi_rows, mv_ref)) {
const MB_MODE_INFO *const candidate = &xd->mi[mv_ref->col + mv_ref->row *
xd->mi_stride]->mbmi;
different_ref_found = 1;
if (candidate->ref_frame[0] == ref_frame)
ADD_MV_REF_LIST(candidate->mv[0]);
else if (candidate->ref_frame[1] == ref_frame)
ADD_MV_REF_LIST(candidate->mv[1]);
}
}
// Check the last frame's mode and mv info.
if (prev_mbmi) {
if (prev_mbmi->ref_frame[0] == ref_frame)
ADD_MV_REF_LIST(prev_mbmi->mv[0]);
else if (prev_mbmi->ref_frame[1] == ref_frame)
ADD_MV_REF_LIST(prev_mbmi->mv[1]);
}
// Since we couldn't find 2 mvs from the same reference frame
// go back through the neighbors and find motion vectors from
// different reference frames.
if (different_ref_found) {
for (i = 0; i < MVREF_NEIGHBOURS; ++i) {
const POSITION *mv_ref = &mv_ref_search[i];
if (is_inside(tile, mi_col, mi_row, cm->mi_rows, mv_ref)) {
const MB_MODE_INFO *const candidate = &xd->mi[mv_ref->col + mv_ref->row
* xd->mi_stride]->mbmi;
// If the candidate is INTRA we don't want to consider its mv.
IF_DIFF_REF_FRAME_ADD_MV(candidate);
}
}
}
// Since we still don't have a candidate we'll try the last frame.
if (prev_mbmi)
IF_DIFF_REF_FRAME_ADD_MV(prev_mbmi);
Done:
mi->mbmi.mode_context[ref_frame] = counter_to_context[context_counter];
// Clamp vectors
for (i = 0; i < MAX_MV_REF_CANDIDATES; ++i)
clamp_mv_ref(&mv_ref_list[i].as_mv, xd);
}
// This function searches the neighbourhood of a given MB/SB
// to try and find candidate reference vectors.
static void find_mv_refs_idx(const VP9_COMMON *cm, const MACROBLOCKD *xd,
const TileInfo *const tile,
MODE_INFO *mi, MV_REFERENCE_FRAME ref_frame,
int_mv *mv_ref_list,
int block, int mi_row, int mi_col,
find_mv_refs_sync sync, void *const data) {
const int *ref_sign_bias = cm->ref_frame_sign_bias;
int i, refmv_count = 0;
const POSITION *const mv_ref_search = mv_ref_blocks[mi->mbmi.sb_type];
int different_ref_found = 0;
int context_counter = 0;
const MV_REF *const prev_frame_mvs = cm->use_prev_frame_mvs ?
cm->prev_frame->mvs + mi_row * cm->mi_cols + mi_col : NULL;
// Blank the reference vector list
memset(mv_ref_list, 0, sizeof(*mv_ref_list) * MAX_MV_REF_CANDIDATES);
// The nearest 2 blocks are treated differently
// if the size < 8x8 we get the mv from the bmi substructure,
// and we also need to keep a mode count.
for (i = 0; i < 2; ++i) {
const POSITION *const mv_ref = &mv_ref_search[i];
if (is_inside(tile, mi_col, mi_row, cm->mi_rows, mv_ref)) {
const MODE_INFO *const candidate_mi = xd->mi[mv_ref->col + mv_ref->row *
xd->mi_stride];
const MB_MODE_INFO *const candidate = &candidate_mi->mbmi;
// Keep counts for entropy encoding.
context_counter += mode_2_counter[candidate->mode];
different_ref_found = 1;
if (candidate->ref_frame[0] == ref_frame)
ADD_MV_REF_LIST(get_sub_block_mv(candidate_mi, 0, mv_ref->col, block),
refmv_count, mv_ref_list, Done);
else if (candidate->ref_frame[1] == ref_frame)
ADD_MV_REF_LIST(get_sub_block_mv(candidate_mi, 1, mv_ref->col, block),
refmv_count, mv_ref_list, Done);
}
}
// Check the rest of the neighbors in much the same way
// as before except we don't need to keep track of sub blocks or
// mode counts.
for (; i < MVREF_NEIGHBOURS; ++i) {
const POSITION *const mv_ref = &mv_ref_search[i];
if (is_inside(tile, mi_col, mi_row, cm->mi_rows, mv_ref)) {
const MB_MODE_INFO *const candidate = &xd->mi[mv_ref->col + mv_ref->row *
xd->mi_stride]->mbmi;
different_ref_found = 1;
if (candidate->ref_frame[0] == ref_frame)
ADD_MV_REF_LIST(candidate->mv[0], refmv_count, mv_ref_list, Done);
else if (candidate->ref_frame[1] == ref_frame)
ADD_MV_REF_LIST(candidate->mv[1], refmv_count, mv_ref_list, Done);
}
}
// TODO(hkuang): Remove this sync after fixing pthread_cond_broadcast
// on windows platform. The sync here is unncessary if use_perv_frame_mvs
// is 0. But after removing it, there will be hang in the unit test on windows
// due to several threads waiting for a thread's signal.
#if defined(_WIN32) && !HAVE_PTHREAD_H
if (cm->frame_parallel_decode && sync != NULL) {
sync(data, mi_row);
}
#endif
// Check the last frame's mode and mv info.
if (cm->use_prev_frame_mvs) {
// Synchronize here for frame parallel decode if sync function is provided.
if (cm->frame_parallel_decode && sync != NULL) {
sync(data, mi_row);
}
if (prev_frame_mvs->ref_frame[0] == ref_frame) {
ADD_MV_REF_LIST(prev_frame_mvs->mv[0], refmv_count, mv_ref_list, Done);
} else if (prev_frame_mvs->ref_frame[1] == ref_frame) {
ADD_MV_REF_LIST(prev_frame_mvs->mv[1], refmv_count, mv_ref_list, Done);
}
}
// Since we couldn't find 2 mvs from the same reference frame
// go back through the neighbors and find motion vectors from
// different reference frames.
if (different_ref_found) {
for (i = 0; i < MVREF_NEIGHBOURS; ++i) {
const POSITION *mv_ref = &mv_ref_search[i];
if (is_inside(tile, mi_col, mi_row, cm->mi_rows, mv_ref)) {
const MB_MODE_INFO *const candidate = &xd->mi[mv_ref->col + mv_ref->row
* xd->mi_stride]->mbmi;
// If the candidate is INTRA we don't want to consider its mv.
IF_DIFF_REF_FRAME_ADD_MV(candidate, ref_frame, ref_sign_bias,
refmv_count, mv_ref_list, Done);
}
}
}
// Since we still don't have a candidate we'll try the last frame.
if (cm->use_prev_frame_mvs) {
if (prev_frame_mvs->ref_frame[0] != ref_frame &&
prev_frame_mvs->ref_frame[0] > INTRA_FRAME) {
int_mv mv = prev_frame_mvs->mv[0];
if (ref_sign_bias[prev_frame_mvs->ref_frame[0]] !=
ref_sign_bias[ref_frame]) {
mv.as_mv.row *= -1;
mv.as_mv.col *= -1;
}
ADD_MV_REF_LIST(mv, refmv_count, mv_ref_list, Done);
}
if (prev_frame_mvs->ref_frame[1] > INTRA_FRAME &&
prev_frame_mvs->ref_frame[1] != ref_frame &&
prev_frame_mvs->mv[1].as_int != prev_frame_mvs->mv[0].as_int) {
int_mv mv = prev_frame_mvs->mv[1];
if (ref_sign_bias[prev_frame_mvs->ref_frame[1]] !=
ref_sign_bias[ref_frame]) {
mv.as_mv.row *= -1;
mv.as_mv.col *= -1;
}
ADD_MV_REF_LIST(mv, refmv_count, mv_ref_list, Done);
}
}
Done:
mi->mbmi.mode_context[ref_frame] = counter_to_context[context_counter];
// Clamp vectors
for (i = 0; i < MAX_MV_REF_CANDIDATES; ++i)
clamp_mv_ref(&mv_ref_list[i].as_mv, xd);
}
