Adding upstream version 124.0.1.upstream/124.0.1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 28 insertions, 0 deletions

diff --git a/third_party/jpeg-xl/lib/jxl/huffman_table.h b/third_party/jpeg-xl/lib/jxl/huffman_table.h
new file mode 100644
index 0000000000..11cdb2fc45
--- /dev/null
+++ b/third_party/jpeg-xl/lib/jxl/huffman_table.h
@@ -0,0 +1,28 @@
+// 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_HUFFMAN_TABLE_H_
+#define LIB_JXL_HUFFMAN_TABLE_H_
+
+#include <stdint.h>
+#include <stdlib.h>
+
+namespace jxl {
+
+struct HuffmanCode {
+  uint8_t bits;   /* number of bits used for this symbol */
+  uint16_t value; /* symbol value or table offset */
+};
+
+/* Builds Huffman lookup table assuming code lengths are in symbol order. */
+/* Returns 0 in case of error (invalid tree or memory error), otherwise
+   populated size of table. */
+uint32_t BuildHuffmanTable(HuffmanCode* root_table, int root_bits,
+                           const uint8_t* code_lengths,
+                           size_t code_lengths_size, uint16_t* count);
+
+}  // namespace jxl
+
+#endif  // LIB_JXL_HUFFMAN_TABLE_H_