MisrCache.h

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/*===========================================================================
=                                                                           =
=                               MisrCache                                   =
=                                                                           =
=============================================================================

                         Jet Propulsion Laboratory
                                   MISR
                               MISR Toolkit

            Copyright 2005, California Institute of Technology.
                           ALL RIGHTS RESERVED.
                 U.S. Government Sponsorship acknowledged.

============================================================================*/

#ifndef MISRCACHE_H
#define MISRCACHE_H

#include "MisrReadData.h"
#include "MisrError.h"
#include "MisrProjParam.h"
#include "MisrUtil.h"

#define BLOCK_CACHE_MAX       2

typedef struct {
  MTKt_boolean valid;   
  MTKt_DataBuffer buf;  
} MTKt_Block;

#define MTKT_BLOCK_INIT { MTK_FALSE, MTKT_DATABUFFER_INIT }

typedef struct {
  int32 fid;                   
  int ncid;                    
  char *gridname;              
  char *fieldname;             
  int block_cnt;               
  MTKt_DataBuffer fill;        
  MTKt_Block block[NBLOCK+1];  
} MTKt_Cache;

#define MTKT_CACHE_INIT { FAIL, 0, NULL, NULL, 0, MTKT_DATABUFFER_INIT, {MTKT_BLOCK_INIT} }

MTKt_status MtkCacheInitFid( int32 fid,
              const char *gridname,
              const char *fieldname,
              MTKt_Cache *cache );

MTKt_status MtkCacheInitNcid( int ncid,
              const char *gridname,
              const char *fieldname,
              MTKt_Cache *cache );

MTKt_status MtkCachePixelGet( MTKt_Cache *cache,
                  int block,
                  float line,
                  float sample,
                  void *pixel );

MTKt_status MtkCacheLoad( MTKt_Cache *cache,
              int block );

void MtkCacheFree( MTKt_Cache *cache );

#endif /* MISRCACHE_H */