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diff --git a/modules/brotli/enc/params.h b/modules/brotli/enc/params.h
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+/* Copyright 2017 Google Inc. All Rights Reserved.
+
+   Distributed under MIT license.
+   See file LICENSE for detail or copy at https://opensource.org/licenses/MIT
+*/
+
+/* Parameters for the Brotli encoder with chosen quality levels. */
+
+#ifndef BROTLI_ENC_PARAMS_H_
+#define BROTLI_ENC_PARAMS_H_
+
+#include <brotli/encode.h>
+#include "./encoder_dict.h"
+
+typedef struct BrotliHasherParams {
+  int type;
+  int bucket_bits;
+  int block_bits;
+  int hash_len;
+  int num_last_distances_to_check;
+} BrotliHasherParams;
+
+typedef struct BrotliDistanceParams {
+  uint32_t distance_postfix_bits;
+  uint32_t num_direct_distance_codes;
+  uint32_t alphabet_size;
+  size_t max_distance;
+} BrotliDistanceParams;
+
+/* Encoding parameters */
+typedef struct BrotliEncoderParams {
+  BrotliEncoderMode mode;
+  int quality;
+  int lgwin;
+  int lgblock;
+  size_t size_hint;
+  BROTLI_BOOL disable_literal_context_modeling;
+  BROTLI_BOOL large_window;
+  BrotliHasherParams hasher;
+  BrotliDistanceParams dist;
+  BrotliEncoderDictionary dictionary;
+} BrotliEncoderParams;
+
+#endif  /* BROTLI_ENC_PARAMS_H_ */