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/* Sample Buffer with producer / consummer model */
/* (C) 2012 by Sylvain Munaut <tnt@246tNt.com>
* All Rights Reserved
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation; either version 3 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef __SAMPBUF_H__
#define __SAMPBUF_H__
#include <complex.h>
#include <stdint.h>
#include <osmocom/core/linuxlist.h>
#include "ringbuf.h"
/* Sample Actor */
/* ------------ */
struct sample_actor;
struct sample_actor_desc {
int (*init)(struct sample_actor *sc, void *params);
void (*fini)(struct sample_actor *sc);
int (*work)(struct sample_actor *sc,
float complex *data, unsigned int len);
int priv_size;
};
struct sample_actor {
/* List */
struct llist_head list;
/* Desc */
const struct sample_actor_desc *desc;
/* State tracking */
uint64_t time;
/* Private data */
void *priv;
};
struct sample_actor *
sact_alloc(const struct sample_actor_desc *desc, void *params);
void
sact_free(struct sample_actor *sact);
/* Sample Buffer */
/* ------------- */
#define RB_LEN (1 << 24) /* 16 Mb */
#define MAX_CHANS 10
struct sample_buf {
/* Channels */
int n_chans;
/* Underlying storage */
struct osmo_ringbuf *rb[MAX_CHANS];
/* Time/Sample tracking */
uint64_t chan_wtime[MAX_CHANS];
uint64_t chan_rtime[MAX_CHANS];
/* Producer */
struct sample_actor *producer[MAX_CHANS];
/* Consumers */
struct llist_head consumers[MAX_CHANS];
};
struct sample_buf *
sbuf_alloc(int n_chans);
void
sbuf_free(struct sample_buf *sbuf);
struct sample_actor *
sbuf_set_producer(struct sample_buf *sbuf, int chan_id,
const struct sample_actor_desc *desc, void *params);
struct sample_actor *
sbuf_add_consumer(struct sample_buf *sbuf, int chan_id,
const struct sample_actor_desc *desc, void *params);
void sbuf_work(struct sample_buf *sbuf);
#endif /* __SAMPBUF_H__ */
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