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Implemented early search termination when skip mode is used

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This commit is contained in:
Marko Viitanen 2014-03-11 08:55:25 +02:00
parent 1b2705a042
commit f2e722fed8
1 changed files with 11 additions and 4 deletions
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15
src/search.c
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@ -828,11 +828,18 @@ static int search_cu(encoder_control *encoder, int x, int y, int depth, lcu_t wo
if (depth < MAX_INTRA_SEARCH_DEPTH || depth < MAX_INTER_SEARCH_DEPTH) {
int half_cu = cu_width / 2;
int split_cost = (int)(4.5 * g_lambda_cost[encoder->QP]);
split_cost += search_cu(encoder, x, y, depth + 1, work_tree);
split_cost += search_cu(encoder, x + half_cu, y, depth + 1, work_tree);
split_cost += search_cu(encoder, x, y + half_cu, depth + 1, work_tree);
split_cost += search_cu(encoder, x + half_cu, y + half_cu, depth + 1, work_tree);
// If skip mode was selected for the block, skip further search.
// Skip mode means there's no coefficients in the block, so splitting
// might not give any better results but takes more time to do.
if(cur_cu->type == CU_INTER && cur_cu->skipped) {
split_cost = INT_MAX;
} else {
split_cost += search_cu(encoder, x, y, depth + 1, work_tree);
split_cost += search_cu(encoder, x + half_cu, y, depth + 1, work_tree);
split_cost += search_cu(encoder, x, y + half_cu, depth + 1, work_tree);
split_cost += search_cu(encoder, x + half_cu, y + half_cu, depth + 1, work_tree);
}
if (split_cost < cost) {
// Copy split modes to this depth.
cost = split_cost;