+/**
+ * This is identical to vp8_rac_get_tree except for the possibility of starting
+ * on a node other than the root node, needed for coeff decode where this is
+ * used to save a bit after a 0 token (by disallowing EOB to immediately follow.)
+ */
+static av_always_inline
+int vp8_rac_get_tree_with_offset(VP56RangeCoder *c, const int8_t (*tree)[2],
+ const uint8_t *probs, int i)
+{
+ do {
+ i = tree[i][vp56_rac_get_prob(c, probs[i])];
+ } while (i > 0);
+
+ return -i;
+}
+
+// how probabilities are associated with decisions is different I think
+// well, the new scheme fits in the old but this way has one fewer branches per decision
+static av_always_inline
+int vp8_rac_get_tree(VP56RangeCoder *c, const int8_t (*tree)[2],
+ const uint8_t *probs)
+{
+ return vp8_rac_get_tree_with_offset(c, tree, probs, 0);
+}
+
+// DCTextra
+static av_always_inline int vp8_rac_get_coeff(VP56RangeCoder *c, const uint8_t *prob)
+{
+ int v = 0;
+
+ do {
+ v = (v<<1) + vp56_rac_get_prob(c, *prob++);
+ } while (*prob);
+
+ return v;
+}
+