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diff --git a/third_party/aom/av1/encoder/tokenize.h b/third_party/aom/av1/encoder/tokenize.h
new file mode 100644
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+++ b/third_party/aom/av1/encoder/tokenize.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 AOM_AV1_ENCODER_TOKENIZE_H_
+#define AOM_AV1_ENCODER_TOKENIZE_H_
+
+#include "av1/common/entropy.h"
+#include "av1/encoder/block.h"
+#include "aom_dsp/bitwriter.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef struct {
+  aom_cdf_prob *color_map_cdf;
+  // TODO(yaowu: use packed enum type if appropriate)
+  uint8_t token;
+} TOKENEXTRA;
+
+struct AV1_COMP;
+struct ThreadData;
+struct FRAME_COUNTS;
+
+struct tokenize_b_args {
+  const struct AV1_COMP *cpi;
+  struct ThreadData *td;
+  TOKENEXTRA **tp;
+  int this_rate;
+  uint8_t allow_update_cdf;
+};
+
+typedef enum {
+  OUTPUT_ENABLED = 0,
+  DRY_RUN_NORMAL,
+  DRY_RUN_COSTCOEFFS,
+} RUN_TYPE;
+
+// Note in all the tokenize functions rate if non NULL is incremented
+// with the coefficient token cost only if dry_run = DRY_RUN_COSTCOEFS,
+// otherwise rate is not incremented.
+void av1_tokenize_sb_vartx(const struct AV1_COMP *cpi, struct ThreadData *td,
+                           TOKENEXTRA **t, RUN_TYPE dry_run, int mi_row,
+                           int mi_col, BLOCK_SIZE bsize, int *rate,
+                           uint8_t allow_update_cdf);
+
+int av1_cost_color_map(const MACROBLOCK *const x, int plane, BLOCK_SIZE bsize,
+                       TX_SIZE tx_size, COLOR_MAP_TYPE type);
+
+void av1_tokenize_color_map(const MACROBLOCK *const x, int plane,
+                            TOKENEXTRA **t, BLOCK_SIZE bsize, TX_SIZE tx_size,
+                            COLOR_MAP_TYPE type, int allow_update_cdf,
+                            struct FRAME_COUNTS *counts);
+
+static INLINE int av1_get_tx_eob(const struct segmentation *seg, int segment_id,
+                                 TX_SIZE tx_size) {
+  const int eob_max = av1_get_max_eob(tx_size);
+  return segfeature_active(seg, segment_id, SEG_LVL_SKIP) ? 0 : eob_max;
+}
+
+#ifdef __cplusplus
+}  // extern "C"
+#endif
+
+#endif  // AOM_AV1_ENCODER_TOKENIZE_H_