Import aom library

This is the reference implementation for the Alliance for Open Media's av1 video code.

The commit used was 4d668d7feb1f8abd809d1bca0418570a7f142a36.

1 files changed, 42 insertions, 0 deletions

diff --git a/third_party/aom/av1/encoder/treewriter.h b/third_party/aom/av1/encoder/treewriter.h
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index 000000000..9a4cb86cb
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+++ b/third_party/aom/av1/encoder/treewriter.h
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+/*
+ * Copyright (c) 2016, Alliance for Open Media. All rights reserved
+ *
+ * This source code is subject to the terms of the BSD 2 Clause License and
+ * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
+ * was not distributed with this source code in the LICENSE file, you can
+ * obtain it at www.aomedia.org/license/software. If the Alliance for Open
+ * Media Patent License 1.0 was not distributed with this source code in the
+ * PATENTS file, you can obtain it at www.aomedia.org/license/patent.
+ */
+
+#ifndef AV1_ENCODER_TREEWRITER_H_
+#define AV1_ENCODER_TREEWRITER_H_
+
+#include "aom_dsp/bitwriter.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+void av1_tree_probs_from_distribution(aom_tree tree,
+                                      unsigned int branch_ct[/* n - 1 */][2],
+                                      const unsigned int num_events[/* n */]);
+
+struct av1_token {
+  int value;
+  int len;
+};
+
+void av1_tokens_from_tree(struct av1_token *, const aom_tree_index *);
+
+static INLINE void av1_write_token(aom_writer *w, const aom_tree_index *tree,
+                                   const aom_prob *probs,
+                                   const struct av1_token *token) {
+  aom_write_tree(w, tree, probs, token->value, token->len, 0);
+}
+
+#ifdef __cplusplus
+}  // extern "C"
+#endif
+
+#endif  // AV1_ENCODER_TREEWRITER_H_