構造体定義書 - compression

typedef struct

No.	名称	属性	説明
1	compression_state
	input	char *	the uncompressed input data
	input_len	int	its length
	num_output_ptr	int	number of output pointers used
	max_output_ptr	int	size of output_ptr
	output_ptr	png_charpp	array of pointers to output

compression_state