static void
dissect_applemidi( tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree ) {
guint16 command;
if ( test_applemidi( tvb, &command, TRUE ) )
dissect_applemidi_common( tvb, pinfo, tree, command );
else
call_dissector( rtp_handle, tvb, pinfo, tree );
}
static gboolean
dissect_applemidi_heur( tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree ) {
guint16 command;
conversation_t *p_conv;
/*struct _rtp_conversation_info *p_conv_data = NULL;*/
encoding_name_and_rate_t *encoding_name_and_rate = NULL;
GHashTable *rtp_dyn_payload = NULL;
gint *key;
if ( tvb_length( tvb ) < 4)
return FALSE; /* not enough bytes to check */
if ( !test_applemidi( tvb, &command, FALSE ) ) {
return FALSE;
}
/* set dynamic payload-type 97 which is used by Apple for their RTP-MIDI implementation for this
address/port-tuple to cause RTP-dissector to call the RTP-MIDI-dissector for payload-decoding */
encoding_name_and_rate = se_alloc( sizeof( encoding_name_and_rate_t ) );
rtp_dyn_payload = g_hash_table_new( g_int_hash, g_int_equal );
encoding_name_and_rate->encoding_name = se_strdup( "rtp-midi" );
encoding_name_and_rate->sample_rate = 10000;
key = se_alloc( sizeof( gint ) );
*key = 97;
g_hash_table_insert( rtp_dyn_payload, key, encoding_name_and_rate );
rtp_add_address( pinfo, &pinfo->src, pinfo->srcport, 0, APPLEMIDI_DISSECTOR_SHORTNAME,
pinfo->fd->num, FALSE, rtp_dyn_payload);
/* call dissect_applemidi() from now on for UDP packets on this "connection"
it is important to do this step after calling rtp_add_address, otherwise
all further packets will go directly to the RTP-dissector! */
p_conv = find_or_create_conversation(pinfo);
conversation_set_dissector( p_conv, applemidi_handle );
/* punt to actual decoding */
dissect_applemidi_common( tvb, pinfo, tree, command );
return TRUE;
}
