From 9b8745d5250c9d0b60c9aa5a77f58a3fcddf1076 Mon Sep 17 00:00:00 2001 From: Tom Schouten Date: Tue, 21 Jan 2003 10:27:33 +0000 Subject: This commit was generated by cvs2svn to compensate for changes in r352, which included commits to RCS files with non-trunk default branches. svn path=/trunk/externals/pdp/; revision=353 --- system/pdp_comm.c | 119 ++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 119 insertions(+) create mode 100644 system/pdp_comm.c (limited to 'system/pdp_comm.c') diff --git a/system/pdp_comm.c b/system/pdp_comm.c new file mode 100644 index 0000000..80cbaaa --- /dev/null +++ b/system/pdp_comm.c @@ -0,0 +1,119 @@ +/* + * Pure Data Packet system implementation. + * Copyright (c) by Tom Schouten + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + * + */ + +/* this file contains misc communication methods */ + + +#include "pdp.h" +#include "pdp_internals.h" +#include + +/* all symbols are C style */ +#ifdef __cplusplus +extern "C" +{ +#endif + + +/************** packet management and communication convenience functions ************/ + +/* send a packet to an outlet */ +void outlet_pdp(t_outlet *out, int packetid) +{ + t_atom atom[2]; + t_symbol *s = gensym("pdp"); + t_symbol *rro = gensym("register_ro"); + t_symbol *rrw = gensym("register_rw"); + t_symbol *proc = gensym("process"); + + + SETFLOAT(atom+1, (float)packetid); + + SETSYMBOL(atom+0, rro); + outlet_anything(out, s, 2, atom); + + SETSYMBOL(atom+0, rrw); + outlet_anything(out, s, 2, atom); + + /* this is not really necessary, it can be triggered by the rw message */ + SETSYMBOL(atom+0, proc); + outlet_anything(out, s, 1, atom); + +} + + +/* unregister a packet and send it to an outlet */ +void +pdp_pass_if_valid(t_outlet *outlet, int *packet) +{ + if (-1 != *packet){ + pdp_packet_mark_unused(*packet); + outlet_pdp(outlet, *packet); + *packet = -1; + } +} + +void +pdp_replace_if_valid(int *dpacket, int *spacket) +{ + if (-1 != *spacket){ + pdp_packet_mark_unused(*dpacket); + *dpacket = *spacket; + *spacket = -1; + } + +} + + +int +pdp_packet_copy_ro_or_drop(int *dpacket, int spacket) +{ + int drop = 0; + if (*dpacket == -1) *dpacket = pdp_packet_copy_ro(spacket); + else { + /* send a notification there is a dropped packet */ + pdp_control_notify_drop(spacket); + drop = 1; + } + return drop; +} + + +int +pdp_packet_copy_rw_or_drop(int *dpacket, int spacket) +{ + int drop = 0; + if (*dpacket == -1) *dpacket = pdp_packet_copy_rw(spacket); + else { + /* send a notification there is a dropped packet */ + pdp_control_notify_drop(spacket); + drop = 1; + } + return drop; +} + + + + + + +#ifdef __cplusplus +} +#endif -- cgit v1.2.1