* The maximum codeword length permitted for this code. All entries in
* 'lens' must be less than or equal to this value.
*
+ * @working_space
+ * A temporary array that was declared with DECODE_TABLE_WORKING_SPACE().
+ *
* Returns 0 on success, or -1 if the lengths do not form a valid prefix code.
*/
int
make_huffman_decode_table(u16 decode_table[], unsigned num_syms,
unsigned table_bits, const u8 lens[],
- unsigned max_codeword_len)
+ unsigned max_codeword_len, u16 working_space[])
{
- u16 len_counts[max_codeword_len + 1];
- u16 offsets[max_codeword_len + 1];
- u16 sorted_syms[num_syms];
+ u16 * const len_counts = &working_space[0];
+ u16 * const offsets = &working_space[1 * (max_codeword_len + 1)];
+ u16 * const sorted_syms = &working_space[2 * (max_codeword_len + 1)];
s32 remainder = 1;
void *entry_ptr = decode_table;
unsigned codeword_len = 1;