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/*
* Pure Data Packet system implementation: control object
* Copyright (c) by Tom Schouten <tom@zwizwa.be>
*
* 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 is an actual pd class that is used for communication with the
pdp framework */
#include "pdp_internals.h"
#include "pdp_control.h"
#include "pdp_packet.h"
#include <stdio.h>
/* all symbols are C style */
#ifdef __cplusplus
extern "C"
{
#endif
static long dropped_packets;
static t_class* pdp_control_class;
/* pdp control instance data */
struct _pdp_control;
typedef struct _pdp_control
{
t_object x_obj;
t_outlet *x_outlet0;
struct _pdp_control *x_next;
} t_pdp_control;
static t_pdp_control *pdp_control_list;
static void pdp_control_info(t_pdp_control __attribute__((unused)) *x)
{
}
static void pdp_control_collectgarbage(t_pdp_control __attribute__((unused)) *x)
{
int nb_packets_freed = pdp_pool_collect_garbage();
post("pdp_control: freed %d packets", nb_packets_freed);
}
static void pdp_control_set_mem_limit(t_pdp_control __attribute__((unused)) *x,
t_floatarg f)
{
int limit = (int)f;
if (limit < 0) limit = 0;
pdp_pool_set_max_mem_usage(limit);
if (limit) post("pdp_control: set memory limit to %d bytes", limit);
else post("pdp_control: disabled memory limit");
}
static void pdp_control_thread(t_pdp_control __attribute__((unused)) *x, t_floatarg f)
{
int t = (int)f;
if (t){
post("pdp_control: pdp is now using its own processing thread");
pdp_queue_use_thread(1);
}
else {
post("pdp_control: pdp is now using the main pd thread");
pdp_queue_use_thread(0);
}
}
static void pdp_control_send_drop_message(t_pdp_control *x)
{
t_atom atom[1];
t_symbol *s = gensym("pdp_drop");
SETFLOAT(atom+0, (float)dropped_packets);
outlet_anything(x->x_outlet0, s, 1, atom);
}
static void pdp_control_free(t_pdp_control *x)
{
/* remove from linked list */
t_pdp_control *curr = pdp_control_list;
if (pdp_control_list == x) pdp_control_list = x->x_next;
else while (curr){
if (curr->x_next == x) {
curr->x_next = x->x_next;
break;
}
else {
curr = curr->x_next;
}
}
}
static void *pdp_control_new(void)
{
t_pdp_control *x = (t_pdp_control *)pd_new(pdp_control_class);
x->x_outlet0 = outlet_new(&x->x_obj, &s_anything);
/* add to list */
x->x_next = pdp_control_list;
pdp_control_list = x;
return x;
}
/************************* class methods ***************************************/
void pdp_control_addmethod(t_method m, t_symbol *s)
{
class_addmethod(pdp_control_class, m, s, A_GIMME, A_NULL);
}
void pdp_control_setup(void)
{
pdp_control_list = 0;
dropped_packets = 0;
/* setup pd class data */
pdp_control_class = class_new(gensym("pdp_control"), (t_newmethod)pdp_control_new,
(t_method)pdp_control_free, sizeof(t_pdp_control), 0, A_NULL);
class_addmethod(pdp_control_class, (t_method)pdp_control_info, gensym("info"), A_NULL);
class_addmethod(pdp_control_class, (t_method)pdp_control_thread, gensym("thread"), A_DEFFLOAT, A_NULL);
class_addmethod(pdp_control_class, (t_method)pdp_control_collectgarbage, gensym("collectgarbage"), A_NULL);
class_addmethod(pdp_control_class, (t_method)pdp_control_set_mem_limit, gensym("memlimit"), A_FLOAT, A_NULL);
}
void pdp_control_notify_broadcast(t_pdp_control_method_notify *notify)
{
t_pdp_control *curr = pdp_control_list;
while (curr){
(*notify)(curr);
curr = curr->x_next;
}
}
/************************* notify class methods *************************/
void pdp_control_notify_drop(int __attribute__((unused)) packet)
{
dropped_packets++;
/* send drop notify to controller class instances */
pdp_control_notify_broadcast(pdp_control_send_drop_message);
//post("dropped packet");
}
#ifdef __cplusplus
}
#endif
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