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#ifndef __DRUMGIZMO_CACHEMANAGER_H__
#define __DRUMGIZMO_CACHEMANAGER_H__
#include <string>
#include <list>
#include <vector>
#include "thread.h"
#include "semaphore.h"
#include "mutex.h"
#include "audiotypes.h"
#include "audiofile.h"
#define CACHEMANAGER_NOID -1
class AudioFile;
typedef int cacheid_t;
class CacheManager : public Thread {
public:
CacheManager();
~CacheManager();
void init(int poolsize);
void deinit();
void thread_main();
sample_t *open(AudioFile *file, int initial_samples_needed, int channel, cacheid_t &new_id);
sample_t *next(cacheid_t id, size_t &size);
void close(cacheid_t id);
private:
void pushEvent();
typedef struct {
AudioFile *file;
int channel;
size_t pos;
void *a;
void *b;
} cache_t;
typedef struct {
cacheid_t id;
} event_t;
void loadNext(cacheid_t id);
void pushEvent(event_t e);
cacheid_t leaseId();
cacheid_t releaseId();
std::list<event_t> eventqueue;
std::list<cacheid_t> availableids;
std::vector<cache_t> id2cache;
Mutex m_events;
Mutex m_ids;
Mutex m_caches;
Semaphore sem;
int running;
};
#endif
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