hvirtual/cinelerra/wavecache.C

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#include "asset.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 asset_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->asset_id == asset_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(Asset *asset,
        int channel,
        int64_t start,
        int64_t end,
        double high,
        double low)
{
        lock->lock("WaveCache::put_wave");
        WaveCacheItem *item = new WaveCacheItem;
        item->asset_id = asset->id;
        item->path = strdup(asset->path);
        item->channel = channel;
        item->position = start;
        item->end = end;
        item->high = high;
        item->low = low;
        
        put_item(item);
        lock->unlock();
}

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