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Skip checked motion vectors in early termination

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Changes the second iteration of early termination to skip the motion
vectors that were already checked in the first iteration.
This commit is contained in:
Arttu Ylä-Outinen 2017-08-04 14:11:33 +03:00
parent 606d441362
commit 4b73bdd9aa
1 changed files with 11 additions and 5 deletions
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16
src/search_inter.c
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@ -375,13 +375,16 @@ static uint32_t calc_mvd_cost(const encoder_state_t *state,
static bool early_terminate(inter_search_info_t *info) static bool early_terminate(inter_search_info_t *info)
{ {
static const vector2d_t small_hexbs[5] = { static const vector2d_t small_hexbs[7] = {
{ 0, 0 }, { 0, -1 }, { -1, 0 }, { 0, 1 }, { 1, 0 },
{ 0, -1 }, { -1, 0 }, { 1, 0 }, { 0, 1 }, { 0, -1 }, { -1, 0 }, { 0, 0 },
}; };
vector2d_t mv = { info->best_mv.x >> 2, info->best_mv.y >> 2 }; vector2d_t mv = { info->best_mv.x >> 2, info->best_mv.y >> 2 };
int first_index = 0;
int last_index = 3;
for (int k = 0; k < 2; ++k) { for (int k = 0; k < 2; ++k) {
double threshold; double threshold;
if (info->state->encoder_control->cfg.me_early_termination == if (info->state->encoder_control->cfg.me_early_termination ==
@ -392,8 +395,8 @@ static bool early_terminate(inter_search_info_t *info)
threshold = info->best_cost; threshold = info->best_cost;
} }
unsigned best_index = 0; int best_index = 6;
for (int i = 1; i < 5; ++i) { for (int i = first_index; i <= last_index; i++) {
int x = mv.x + small_hexbs[i].x; int x = mv.x + small_hexbs[i].x;
int y = mv.y + small_hexbs[i].y; int y = mv.y + small_hexbs[i].y;
@ -410,6 +413,9 @@ static bool early_terminate(inter_search_info_t *info)
if (info->best_cost >= threshold) { if (info->best_cost >= threshold) {
return true; return true;
} }
first_index = (best_index + 3) % 4;
last_index = first_index + 2;
} }
return false; return false;
} }