include/texcache.h

   1 #ifndef __TEX_CACHE_H
   2 #define __TEX_CACHE_H
   3
   4 #include <gsToolkit.h>
   5 #include "include/iosupport.h"
   6
   7 /// A single cache entry...
   8 typedef struct {
   9         GSTEXTURE texture;
  10
  11         // NULL not queued, otherwise queue request record
  12         void* qr;
  13
  14         // frame counter the icon was used the last time - oldest get rewritten first in case new icon is requested and cache is full. negative numbers mean
  15         // slot is free and can be used right now
  16         int lastUsed;
  17
  18         int UID;
  19 } cache_entry_t;
  20
  21
  22 /// One texture cache instance
  23 typedef struct {
  24         /// User specified ID, not used in any way by the cache code (not even initialized!)
  25         int userId;
  26
  27         /// count of entries (copy of the requested cache size upon cache initialization)
  28         int count;
  29
  30         /// directory prefix for this cache (if any)
  31         char* prefix;
  32         int isPrefixRelative;
  33         char* suffix;
  34
  35         int nextUID;
  36
  37         /// the cache entries itself
  38         cache_entry_t* content;
  39 } image_cache_t;
  40
  41 /** Initializes the cache subsystem.
  42 */
  43 void cacheInit();
  44
  45 /** Terminates the cache. Does nothing currently. Users of this code have to destroy caches via cacheDestroyCache
  46 */
  47 void cacheEnd();
  48
  49 /** Initializes a single cache
  50 */
  51 image_cache_t* cacheInitCache(int userId, char* prefix, int isPrefixRelative, char* suffix, int count);
  52
  53 /** Destroys a given cache (unallocates all memory stored there, disconnects the pixmaps from the usage points).
  54 */
  55 void cacheDestroyCache(image_cache_t* cache);
  56
  57 GSTEXTURE* cacheGetTexture(image_cache_t* cache, item_list_t* list, int* cacheId, int* UID, char* value);
  58
  59 #endif