Lines Matching defs:read_data_fn
37 if (png_ptr->read_data_fn != NULL)
38 (*(png_ptr->read_data_fn))(png_ptr, data, length);
140 * read_data_fn - pointer to a new input function that takes as its
151 png_rw_ptr read_data_fn)
158 if (read_data_fn != NULL)
159 png_ptr->read_data_fn = read_data_fn;
161 png_ptr->read_data_fn = png_default_read_data;
163 png_ptr->read_data_fn = read_data_fn;
171 "It's an error to set both read_data_fn and write_data_fn in the ");