532    png_structp    read_pp;  member
558    dp->read_pp = NULL;  in display_init()
571    if (dp->read_pp != NULL)  in display_clean_read()
572       png_destroy_read_struct(&dp->read_pp, &dp->read_ip, NULL);  in display_clean_read()
798    dp->read_pp = pp = png_create_read_struct(PNG_LIBPNG_VER_STRING, dp,  in read_png()
851    dp->original_pp = pp = dp->read_pp, dp->read_pp = NULL;  in update_display()
923    png_get_IHDR(dp->read_pp, dp->read_ip, &width, &height, &bit_depth,  in compare_read()
948          png_get_valid(dp->read_pp, dp->read_ip, 0xffffffff);  in compare_read()
956    rowbytes = png_get_rowbytes(dp->read_pp, dp->read_ip);  in compare_read()
969       png_bytepp rows = png_get_rows(dp->read_pp, dp->read_ip);  in compare_read()
1023          if (png_get_sBIT(dp->read_pp, dp->read_ip, &sBIT) != PNG_INFO_sBIT)  in compare_read()