
/*
 * CINELERRA
 * Copyright (C) 2008 Adam Williams <broadcast at earthling dot 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 * 
 */

#include "indexable.h"
#include "mutex.h"
#include "wavecache.h"

#include <string.h>

WaveCacheItem::WaveCacheItem()
 : CacheItemBase()
{
}

WaveCacheItem::~WaveCacheItem()
{
}

int WaveCacheItem::get_size()
{
	return sizeof(WaveCacheItem) + (path ? strlen(path) : 0);
}



WaveCache::WaveCache()
 : CacheBase()
{
}

WaveCache::~WaveCache()
{
}


WaveCacheItem* WaveCache::get_wave(int indexable_id,
	int channel,
	int64_t start,
	int64_t end)
{
	lock->lock("WaveCache::get_wave");
	int item_number = -1;
	WaveCacheItem *result = 0;
	
	result = (WaveCacheItem*)get_item(start);
	while(result && result->position == start)
	{
		if(result->indexable_id == indexable_id && 
			result->channel == channel &&
			result->end == end)
		{
			result->age = get_age();
			return result;
		}
		else
			result = (WaveCacheItem*)result->next;
	}
	
	lock->unlock();
	return 0;
}

void WaveCache::put_wave(Indexable *indexable,
	int channel,
	int64_t start,
	int64_t end,
	double high,
	double low)
{
	lock->lock("WaveCache::put_wave");
	WaveCacheItem *item = new WaveCacheItem;
	item->indexable_id = indexable->id;
	item->path = strdup(indexable->path);
	item->channel = channel;
	item->position = start;
	item->end = end;
	item->high = high;
	item->low = low;
	
	put_item(item);
	lock->unlock();
}






