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/*
* Pure Data Packet - processor queue interface
* 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.
*
*/
#ifndef PDP_QUEUE_H
#define PDP_QUEUE_H
#include "pdp_pd.h"
#include <pthread.h>
/********************* general purpose pd process queue class *********************/
typedef void (*t_pdpmethod)(void *client);
/* the process queue data record */
typedef struct process_queue_struct
{
void *x_owner; /* the object we are dealing with */
t_pdpmethod x_process; /* the process method */
t_pdpmethod x_callback; /* the function to be called when finished */
int *x_queue_id; /* place to store the queue id for task */
} t_process_queue_item;
/* a pd process queue object */
typedef struct _pd_queue
{
/* clock members */
t_clock *pdp_clock;
double deltime;
/* some bookkeeping vars */
long long ticks;
long long packets;
/* queue members */
t_process_queue_item *q; /* queue */
int mask;
int head; /* last entry in queue + 1 */
int tail; /* first entry in queque */
int curr; /* the object currently processed in other thread */
/* pthread vars */
pthread_mutex_t mut;
pthread_cond_t cond_dataready;
pthread_cond_t cond_processingdone;
pthread_t thread_id;
/* toggle for thread usage */
int use_thread;
} t_pdp_procqueue;
/* all symbols are C-style */
#ifdef __cplusplus
extern "C"
{
#endif
/* returns 1 if full, 0 if there's space available */
int pdp_procqueue_full(t_pdp_procqueue *q);
void pdp_procqueue_flush(t_pdp_procqueue *q);
void pdp_procqueue_wait(t_pdp_procqueue *q);
void pdp_procqueue_finish(t_pdp_procqueue *q, int indx);
void pdp_procqueue_add(t_pdp_procqueue *q, void *owner, void *process, void *callback, int *queue_id);
void pdp_procqueue_use_thread(t_pdp_procqueue* q, int t);
void pdp_procqueue_init(t_pdp_procqueue *q, double milliseconds, int logsize);
/********************* interface to pdp process queue singleton *********************/
/* processor queue methods, callable from main pd thread */
/* get the default queue */
t_pdp_procqueue *pdp_queue_get_queue(void);
#if 1
/* add a method to the processing queue */
void pdp_queue_add(void *owner, void *process, void *callback, int *queue_id);
/* halt main tread until processing is done */
void pdp_queue_wait(void);
/* halt main tread until processing is done and remove
callback from queue(for destructors) */
void pdp_queue_finish(int queue_id);
#endif
/* misc signals to pdp */
void pdp_control_notify_drop(int packet);
#ifdef __cplusplus
}
#endif
#endif
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