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authortrav90 <travawine@palemoon.org>2018-10-18 06:04:57 -0500
committertrav90 <travawine@palemoon.org>2018-10-18 06:04:57 -0500
commit7369c7d7a5eed32963d8af37658286617919f91c (patch)
tree5397ce7ee9bca1641118fdc3187bd9e2b24fdc9c /third_party/aom/av1/encoder/cost.c
parent77887af9c4ad1420bbdb33984af4f74b55ca59db (diff)
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Update aom to commit id f5bdeac22930ff4c6b219be49c843db35970b918
Diffstat (limited to 'third_party/aom/av1/encoder/cost.c')
-rw-r--r--third_party/aom/av1/encoder/cost.c18
1 files changed, 18 insertions, 0 deletions
diff --git a/third_party/aom/av1/encoder/cost.c b/third_party/aom/av1/encoder/cost.c
index e3151a597..e33df53e4 100644
--- a/third_party/aom/av1/encoder/cost.c
+++ b/third_party/aom/av1/encoder/cost.c
@@ -65,3 +65,21 @@ void av1_cost_tokens_skip(int *costs, const aom_prob *probs, aom_tree tree) {
costs[-tree[0]] = av1_cost_bit(probs[0], 0);
cost(costs, tree, probs, 2, 0);
}
+
+void av1_cost_tokens_from_cdf(int *costs, const aom_cdf_prob *cdf,
+ const int *inv_map) {
+ int i;
+ aom_cdf_prob prev_cdf = 0;
+ for (i = 0;; ++i) {
+ const aom_cdf_prob p15 = AOM_ICDF(cdf[i]) - prev_cdf;
+ prev_cdf = AOM_ICDF(cdf[i]);
+
+ if (inv_map)
+ costs[inv_map[i]] = av1_cost_symbol(p15);
+ else
+ costs[i] = av1_cost_symbol(p15);
+
+ // Stop once we reach the end of the CDF
+ if (cdf[i] == AOM_ICDF(CDF_PROB_TOP)) break;
+ }
+}