Lines Matching defs:read_data_fn
30 if (png_ptr->read_data_fn != NULL)
31 (*(png_ptr->read_data_fn))(png_ptr, data, length);
127 read_data_fn - pointer to a new input function that takes as its
135 png_rw_ptr read_data_fn)
140 if (read_data_fn != NULL)
141 png_ptr->read_data_fn = read_data_fn;
143 png_ptr->read_data_fn = png_default_read_data;
145 png_ptr->read_data_fn = read_data_fn;
153 "It's an error to set both read_data_fn and write_data_fn in the ");