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diff --git a/third_party/jpeg-xl/lib/jpegli/encode_internal.h b/third_party/jpeg-xl/lib/jpegli/encode_internal.h
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+++ b/third_party/jpeg-xl/lib/jpegli/encode_internal.h
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+// Copyright (c) the JPEG XL 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.
+
+#ifndef LIB_JPEGLI_ENCODE_INTERNAL_H_
+#define LIB_JPEGLI_ENCODE_INTERNAL_H_
+
+#include <stdint.h>
+
+#include "lib/jpegli/bit_writer.h"
+#include "lib/jpegli/common.h"
+#include "lib/jpegli/common_internal.h"
+#include "lib/jpegli/encode.h"
+
+namespace jpegli {
+
+constexpr unsigned char kICCSignature[12] = {
+    0x49, 0x43, 0x43, 0x5F, 0x50, 0x52, 0x4F, 0x46, 0x49, 0x4C, 0x45, 0x00};
+constexpr int kICCMarker = JPEG_APP0 + 2;
+
+constexpr int kDefaultProgressiveLevel = 0;
+
+typedef int16_t coeff_t;
+
+struct HuffmanCodeTable {
+  int depth[256];
+  int code[256];
+};
+
+struct Token {
+  uint8_t context;
+  uint8_t symbol;
+  uint16_t bits;
+  Token(int c, int s, int b) : context(c), symbol(s), bits(b) {}
+};
+
+struct TokenArray {
+  Token* tokens;
+  size_t num_tokens;
+};
+
+struct RefToken {
+  uint8_t symbol;
+  uint8_t refbits;
+};
+
+struct ScanTokenInfo {
+  RefToken* tokens;
+  size_t num_tokens;
+  uint8_t* refbits;
+  uint16_t* eobruns;
+  size_t* restarts;
+  size_t num_restarts;
+  size_t num_nonzeros;
+  size_t num_future_nonzeros;
+  size_t token_offset;
+  size_t restart_interval;
+  size_t MCUs_per_row;
+  size_t MCU_rows_in_scan;
+  size_t blocks_in_MCU;
+  size_t num_blocks;
+};
+
+}  // namespace jpegli
+
+struct jpeg_comp_master {
+  jpegli::RowBuffer<float> input_buffer[jpegli::kMaxComponents];
+  jpegli::RowBuffer<float>* smooth_input[jpegli::kMaxComponents];
+  jpegli::RowBuffer<float>* raw_data[jpegli::kMaxComponents];
+  bool force_baseline;
+  bool xyb_mode;
+  uint8_t cicp_transfer_function;
+  bool use_std_tables;
+  bool use_adaptive_quantization;
+  int progressive_level;
+  size_t xsize_blocks;
+  size_t ysize_blocks;
+  size_t blocks_per_iMCU_row;
+  jpegli::ScanTokenInfo* scan_token_info;
+  JpegliDataType data_type;
+  JpegliEndianness endianness;
+  void (*input_method)(const uint8_t* row_in, size_t len,
+                       float* row_out[jpegli::kMaxComponents]);
+  void (*color_transform)(float* row[jpegli::kMaxComponents], size_t len);
+  void (*downsample_method[jpegli::kMaxComponents])(
+      float* rows_in[MAX_SAMP_FACTOR], size_t len, float* row_out);
+  float* quant_mul[jpegli::kMaxComponents];
+  float* zero_bias_offset[jpegli::kMaxComponents];
+  float* zero_bias_mul[jpegli::kMaxComponents];
+  int h_factor[jpegli::kMaxComponents];
+  int v_factor[jpegli::kMaxComponents];
+  // Array of Huffman tables that will be encoded in one or more DHT segments.
+  // In progressive mode we compute all Huffman tables that will be used in any
+  // of the scans, thus we can have more than 4 tables here.
+  JHUFF_TBL* huffman_tables;
+  size_t num_huffman_tables;
+  // Array of num_huffman_tables slot ids, where the ith element is the slot id
+  // of the ith Huffman table, as it appears in the DHT segment. The range of
+  // the slot ids is 0..3 for DC and 16..19 for AC Huffman codes.
+  uint8_t* slot_id_map;
+  // Maps context ids to an index in the huffman_tables array. Each component in
+  // each scan has a DC and AC context id, which are defined as follows:
+  //   - DC context id is the component index (relative to cinfo->comp_info) of
+  //     the scan component
+  //   - AC context ids start at 4 and are increased for each component of each
+  //     scan that have AC components (i.e. Se > 0)
+  uint8_t* context_map;
+  size_t num_contexts;
+  // Array of cinfo->num_scans context ids, where the ith element is the context
+  // id of the first AC component of the ith scan.
+  uint8_t* ac_ctx_offset;
+  // Array of num_huffman tables derived coding tables.
+  jpegli::HuffmanCodeTable* coding_tables;
+  float* diff_buffer;
+  jpegli::RowBuffer<float> fuzzy_erosion_tmp;
+  jpegli::RowBuffer<float> pre_erosion;
+  jpegli::RowBuffer<float> quant_field;
+  jvirt_barray_ptr* coeff_buffers;
+  size_t next_input_row;
+  size_t next_iMCU_row;
+  size_t next_dht_index;
+  size_t last_restart_interval;
+  JCOEF last_dc_coeff[MAX_COMPS_IN_SCAN];
+  jpegli::JpegBitWriter bw;
+  float* dct_buffer;
+  int32_t* block_tmp;
+  jpegli::TokenArray* token_arrays;
+  size_t cur_token_array;
+  jpegli::Token* next_token;
+  size_t num_tokens;
+  size_t total_num_tokens;
+  jpegli::RefToken* next_refinement_token;
+  uint8_t* next_refinement_bit;
+  float psnr_target;
+  float psnr_tolerance;
+  float min_distance;
+  float max_distance;
+};
+
+#endif  // LIB_JPEGLI_ENCODE_INTERNAL_H_