id_ca.h

#ifndef __ID_CA__
#define __ID_CA__

//===========================================================================

#define NUMMAPS         60
#define MAPPLANES       2

#define UNCACHEGRCHUNK(chunk) {if(grsegs[chunk]) {free(grsegs[chunk]); grsegs[chunk]=NULL;}}
#define UNCACHEAUDIOCHUNK(chunk) {if(audiosegs[chunk]) {free(audiosegs[chunk]); audiosegs[chunk]=NULL;}}

//===========================================================================

typedef struct
{
	int32_t planestart[3];
	word    planelength[3];
	word    width, height;
	char    name[16];
} maptype;

//===========================================================================

extern  int   mapon;
extern  word* mapsegs[MAPPLANES];
extern  byte* audiosegs[NUMSNDCHUNKS];
extern  byte* grsegs[NUMCHUNKS];

extern  char  extension[5];
extern  char  graphext[5];
extern  char  audioext[5];

//===========================================================================

boolean CA_LoadFile(const char* filename, memptr* ptr);
boolean CA_WriteFile(const char* filename, void* ptr, int32_t length);

int32_t CA_RLEWCompress(word* source, int32_t length, word* dest, word rlewtag);

void CA_RLEWexpand(word* source, word* dest, int32_t length, word rlewtag);

void CA_Startup(void);
void CA_Shutdown(void);

int32_t CA_CacheAudioChunk(int chunk);
void CA_LoadAllSounds(void);

void CA_CacheGrChunk(int chunk);
void CA_CacheMap(int mapnum);

void CA_CacheScreen(int chunk);

void CA_CannotOpen(const char* name);

#endif