png_do_write_swap_alpha 1042 3rdparty/libpng/pngpriv.h PNG_EXTERN void png_do_write_swap_alpha PNGARG((png_row_infop row_info,
png_do_write_swap_alpha   76 3rdparty/libpng/pngwtran.c       png_do_write_swap_alpha(row_info, png_ptr->row_buf + 1);