/* Add a default subtree to a tree item */
void rmt_ext_decode_default_subtree(struct _ext *e, tvbuff_t *tvb, proto_item *ti, gint ett)
{
proto_tree *ext_tree;
ext_tree = proto_item_add_subtree(ti, ett);
rmt_ext_decode_default_header(e, tvb, ext_tree);
if (ext_tree)
proto_tree_add_text(ext_tree, tvb, e->hec_offset, e->hec_size,
"Header Extension Content (HEC): %s", tvb_bytes_to_str(tvb, e->hec_offset, e->hec_size));
}
/* Decode an EXT_FTI extension and fill FEC array */
void fec_decode_ext_fti(struct _ext *e, tvbuff_t *tvb, proto_tree *tree, gint ett, struct _fec_ptr f)
{
proto_item* ti = NULL;
proto_tree *ext_tree;
if (tree)
ti = proto_tree_add_none_format(tree, f.hf->fti_header, tvb, e->offset, e->length,
"EXT_FTI, FEC Object Transmission Information (%u)", e->het);
if (f.fec->encoding_id_present)
{
ext_tree = proto_item_add_subtree(ti, ett);
rmt_ext_decode_default_header(e, tvb, ext_tree);
/* Decode 48-bit length field */
f.fec->transfer_length = tvb_get_ntoh64(tvb, e->offset) & G_GINT64_CONSTANT(0xFFFFFFFFFFFFU);
if (f.fec->encoding_id >= 128)
{
/* Decode FEC Instance ID */
f.fec->instance_id_present = TRUE;
f.fec->instance_id = (guint8) tvb_get_ntohs(tvb, e->offset+8);
}
if (tree)
proto_tree_add_uint64(ext_tree, f.hf->fti_transfer_length, tvb, e->offset+2, 6, f.fec->transfer_length);
switch (f.fec->encoding_id)
{
case 0:
case 2:
case 128:
case 130:
f.fec->encoding_symbol_length = tvb_get_ntohs(tvb, e->offset+10);
f.fec->max_source_block_length = tvb_get_ntohl(tvb, e->offset+12);
if (tree)
{
proto_tree_add_uint(ext_tree, f.hf->fti_encoding_symbol_length, tvb, e->offset+10, 2, f.fec->encoding_symbol_length);
proto_tree_add_uint(ext_tree, f.hf->fti_max_source_block_length, tvb, e->offset+12, 4, f.fec->max_source_block_length);
}
break;
case 129:
f.fec->encoding_symbol_length = tvb_get_ntohs(tvb, e->offset+10);
f.fec->max_source_block_length = tvb_get_ntohs(tvb, e->offset+12);
f.fec->max_number_encoding_symbols = tvb_get_ntohs(tvb, e->offset+14);
if (tree)
{
proto_tree_add_uint(ext_tree, f.hf->fti_encoding_symbol_length, tvb, e->offset+10, 2, f.fec->encoding_symbol_length);
proto_tree_add_uint(ext_tree, f.hf->fti_max_source_block_length, tvb, e->offset+12, 2, f.fec->max_source_block_length);
proto_tree_add_uint(ext_tree, f.hf->fti_max_number_encoding_symbols, tvb, e->offset+14, 2, f.fec->max_number_encoding_symbols);
}
break;
case 132:
f.fec->encoding_symbol_length = tvb_get_ntohs(tvb, e->offset+10);
f.fec->max_source_block_length = tvb_get_ntohl(tvb, e->offset+12);
f.fec->max_number_encoding_symbols = tvb_get_ntohl(tvb, e->offset+16);
if (tree)
{
proto_tree_add_uint(ext_tree, f.hf->fti_encoding_symbol_length, tvb, e->offset+10, 2, f.fec->encoding_symbol_length);
proto_tree_add_uint(ext_tree, f.hf->fti_max_source_block_length, tvb, e->offset+12, 4, f.fec->max_source_block_length);
proto_tree_add_uint(ext_tree, f.hf->fti_max_number_encoding_symbols, tvb, e->offset+16, 4, f.fec->max_number_encoding_symbols);
}
break;
}
} else
if (tree)
rmt_ext_decode_default_subtree(e, tvb, ti, ett);
}