UNROLL1 240 libavcodec/pngdec.c UNROLL1(1, op) \ UNROLL1 242 libavcodec/pngdec.c UNROLL1(2, op) \ UNROLL1 244 libavcodec/pngdec.c UNROLL1(3, op) \ UNROLL1 246 libavcodec/pngdec.c UNROLL1(4, op) \