Port folder renaming changes from AOM
Manually cherry-picked commits:
ceef058 libvpx->libaom part2
3d26d91 libvpx -> libaom
cfea7dd vp10/ -> av1/
3a8eff7 Fix a build issue for a test
bf4202e Rename vpx to aom
Change-Id: I1b0eb5a40796e3aaf41c58984b4229a439a597dc
diff --git a/av1/encoder/variance_tree.c b/av1/encoder/variance_tree.c
new file mode 100644
index 0000000..219d39a
--- /dev/null
+++ b/av1/encoder/variance_tree.c
@@ -0,0 +1,60 @@
+/*
+ * Copyright (c) 2016 The WebM project authors. All Rights Reserved.
+ *
+ * Use of this source code is governed by a BSD-style license
+ * that can be found in the LICENSE file in the root of the source
+ * tree. An additional intellectual property rights grant can be found
+ * in the file PATENTS. All contributing project authors may
+ * be found in the AUTHORS file in the root of the source tree.
+ */
+
+#include "av1/encoder/variance_tree.h"
+#include "av1/encoder/encoder.h"
+
+void vp10_setup_var_tree(struct VP10Common *cm, ThreadData *td) {
+ int i, j;
+#if CONFIG_EXT_PARTITION
+ const int leaf_nodes = 1024;
+ const int tree_nodes = 1024 + 256 + 64 + 16 + 4 + 1;
+#else
+ const int leaf_nodes = 256;
+ const int tree_nodes = 256 + 64 + 16 + 4 + 1;
+#endif // CONFIG_EXT_PARTITION
+ int index = 0;
+ VAR_TREE *this_var;
+ int nodes;
+
+ vpx_free(td->var_tree);
+ CHECK_MEM_ERROR(cm, td->var_tree,
+ vpx_calloc(tree_nodes, sizeof(*td->var_tree)));
+
+ this_var = &td->var_tree[0];
+
+ // Sets up all the leaf nodes in the tree.
+ for (index = 0; index < leaf_nodes; ++index) {
+ VAR_TREE *const leaf = &td->var_tree[index];
+ leaf->split[0] = NULL;
+ }
+
+ // Each node has 4 leaf nodes, fill in the child pointers
+ // from leafs to the root.
+ for (nodes = leaf_nodes >> 2; nodes > 0; nodes >>= 2) {
+ for (i = 0; i < nodes; ++i, ++index) {
+ VAR_TREE *const node = &td->var_tree[index];
+ for (j = 0; j < 4; j++) node->split[j] = this_var++;
+ }
+ }
+
+ // Set up the root node for the largest superblock size
+ i = MAX_MIB_SIZE_LOG2 - MIN_MIB_SIZE_LOG2;
+ td->var_root[i] = &td->var_tree[tree_nodes - 1];
+ // Set up the root nodes for the rest of the possible superblock sizes
+ while (--i >= 0) {
+ td->var_root[i] = td->var_root[i + 1]->split[0];
+ }
+}
+
+void vp10_free_var_tree(ThreadData *td) {
+ vpx_free(td->var_tree);
+ td->var_tree = NULL;
+}
