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/*
* ALSA sequencer Memory Manager
* Copyright (c) 1998 by Frank van de Pol <F.K.W.van.de.Pol@inter.nl.net>
*
*
* 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 __SND_SEQ_MEMORYMGR_H
#define __SND_SEQ_MEMORYMGR_H
#include "seq.h"
/* container for sequencer event (internal use)*/
typedef struct snd_seq_event_cell_t {
struct snd_seq_event_cell_t *ptr_l; /* pointer to left leaf */
struct snd_seq_event_cell_t *ptr_r; /* pointer to right leaf */
snd_seq_event_t event;
} snd_seq_event_cell_t;
/* release this cell */
extern void snd_seq_cell_free(snd_seq_event_cell_t* cell);
/* return pointer to cell, NULL on failure */
extern snd_seq_event_cell_t *snd_seq_cell_alloc(void);
/* duplicate event, NULL on failure */
extern snd_seq_event_cell_t *snd_seq_event_dup(snd_seq_event_t *event);
extern snd_seq_event_cell_t *snd_seq_event_dup_from_user(snd_seq_event_t *event);
/* duplicate event cell, NULL on failure */
extern snd_seq_event_cell_t *snd_seq_cell_dup(snd_seq_event_cell_t *event);
/* return number of unused (free) cells */
extern int snd_seq_unused_cells(void);
/* return total number of allocated cells */
extern int snd_seq_total_cells(void);
/* init memory, allocate room specified number of events */
extern void snd_sequencer_memory_init(int events);
/* release event memory */
extern void snd_sequencer_memory_done(void);
#endif
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