From 36d22d82aa202bb199967e9512281e9a53db42c9 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 21:33:14 +0200 Subject: Adding upstream version 115.7.0esr. Signed-off-by: Daniel Baumann --- third_party/jpeg-xl/lib/jxl/enc_huffman.h | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) create mode 100644 third_party/jpeg-xl/lib/jxl/enc_huffman.h (limited to 'third_party/jpeg-xl/lib/jxl/enc_huffman.h') diff --git a/third_party/jpeg-xl/lib/jxl/enc_huffman.h b/third_party/jpeg-xl/lib/jxl/enc_huffman.h new file mode 100644 index 0000000000..d7a66584e8 --- /dev/null +++ b/third_party/jpeg-xl/lib/jxl/enc_huffman.h @@ -0,0 +1,22 @@ +// 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_JXL_ENC_HUFFMAN_H_ +#define LIB_JXL_ENC_HUFFMAN_H_ + +#include "lib/jxl/enc_bit_writer.h" + +namespace jxl { + +// Builds a Huffman tree for the given histogram, and encodes it into writer +// in a format that can be read by HuffmanDecodingData::ReadFromBitstream. +// An allotment for `writer` must already have been created by the caller. +void BuildAndStoreHuffmanTree(const uint32_t* histogram, size_t length, + uint8_t* depth, uint16_t* bits, + BitWriter* writer); + +} // namespace jxl + +#endif // LIB_JXL_ENC_HUFFMAN_H_ -- cgit v1.2.3