+// Read Huffman tables from a stream, and compute the derived values.
+void read_huffman_tables(huffman_tables_t* dst, input_func_t* input_func, void* userdata);
+
+unsigned read_huffman_symbol_slow_path(const struct huffman_table* table,
+ struct bit_source* source);
+
+static inline unsigned read_huffman_symbol(const struct huffman_table* table,
+ struct bit_source* source)
+{
+ // FIXME: We can read past the end of the stream here in some edge
+ // cases. We need to define some guarantees in the layers above.
+ possibly_refill(source, DEHUF_TABLE_BITS);
+ unsigned lookup = peek_bits(source, DEHUF_TABLE_BITS);
+ int code = table->lookup_table_codes[lookup];
+ int length = table->lookup_table_length[lookup];
+
+ if (code == DEHUF_SLOW_PATH) {
+ return read_huffman_symbol_slow_path(table, source);
+ }
+
+ read_bits(source, length);
+ return code;
+}