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Lines Matching refs:read_data_fn

37    if (png_ptr->read_data_fn != NULL)
38       (*(png_ptr->read_data_fn))(png_ptr, data, length);
155  * read_data_fn - pointer to a new input function that takes as its
166    png_rw_ptr read_data_fn)
173    if (read_data_fn != NULL)
174       png_ptr->read_data_fn = read_data_fn;
176       png_ptr->read_data_fn = png_default_read_data;
178    png_ptr->read_data_fn = read_data_fn;
186          "It's an error to set both read_data_fn and write_data_fn in the ");