raze-gles/libraries/timidityplus/timiditypp/recache.h

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2019-11-10 22:58:51 +00:00
/*
TiMidity++ -- MIDI to WAVE converter and player
Copyright (C) 1999-2002 Masanao Izumo <mo@goice.co.jp>
Copyright (C) 1995 Tuukka Toivonen <tt@cgs.fi>
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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef ___RECACHE_H_
#define ___RECACHE_H_
#include <stdint.h>
namespace TimidityPlus
{
struct cache_hash
{
/* cache key */
int note;
Sample *sp;
int32_t cnt; /* counter */
double r; /* size/refcnt */
Sample *resampled;
struct cache_hash *next;
};
class Player;
class Recache
{
Player *player;
enum
{
HASH_TABLE_SIZE = 251,
MIXLEN = 256,
MIN_LOOPSTART = MIXLEN,
MIN_LOOPLEN = 1024,
MAX_EXPANDLEN = (1024 * 32),
CACHE_RESAMPLING_OK = 0,
CACHE_RESAMPLING_NOTOK = 1,
SORT_THRESHOLD = 20
};
struct CNote
{
int32_t on[128];
struct cache_hash *cache[128];
};
CNote channel_note_table[MAX_CHANNELS];
sample_t *cache_data;
splen_t cache_data_len;
struct cache_hash *cache_hash_table[HASH_TABLE_SIZE];
MBlockList hash_entry_pool;
void free_cache_data(void);
double sample_resamp_info(Sample *, int, splen_t *, splen_t *, splen_t *);
void qsort_cache_array(struct cache_hash **, int32_t, int32_t);
void insort_cache_array(struct cache_hash **, int32_t);
int cache_resampling(struct cache_hash *);
void loop_connect(sample_t *, int32_t, int32_t);
public:
Recache(Player *p)
{
memset(this, 0, sizeof(*this));
player = p;
resamp_cache_reset();
}
~Recache()
{
free_cache_data();
}
void resamp_cache_reset(void);
void resamp_cache_refer_on(Voice *vp, int32_t sample_start);
void resamp_cache_refer_off(int ch, int note, int32_t sample_end);
void resamp_cache_refer_alloff(int ch, int32_t sample_end);
void resamp_cache_create(void);
struct cache_hash *resamp_cache_fetch(Sample *sp, int note);
};
const int32_t allocate_cache_size = DEFAULT_CACHE_DATA_SIZE;
}
#endif /* ___RECACHE_H_ */