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id_ca.c
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/* ID_CA.C */
/* this has been customized for WOLF */
/*
=============================================================================
Id Software Caching Manager
---------------------------
Must be started BEFORE the memory manager, because it needs to get the headers
loaded into the data segment
=============================================================================
*/
#ifndef SEGA_SATURN
#include <sys/types.h>
#if defined(_MSC_VER)
#include <io.h>
#elif defined(SWITCH)
#include <sys/_iovec.h>
#elif defined(N3DS)
struct iovec
{
void *iov_base;
size_t iov_len;
};
#elif defined(PS2)
#include <unistd.h>
#elif !defined(_arch_dreamcast)
#if defined(DEVCPP)
#include <io.h>
#else
#include <sys/uio.h>
#endif
#endif
#endif
#include "wl_def.h"
#ifdef SEGA_SATURN
void readChunks(Sint32 fileId, unsigned int size, unsigned int* pageOffsets, unsigned char* Chunks, unsigned char* ptr);
#define BUFFERSIZE 0x800
#endif
#define THREEBYTEGRSTARTS
#ifdef SEGA_SATURN
/* #define HEAP_WALK 1 */
#endif
#if defined(HEAP_WALK) && defined(SEGA_SATURN)
extern Uint32 end;
extern Uint32 __malloc_free_list;
extern Uint32 _sbrk(int size);
void heapWalk(void)
{
Uint32 chunkNumber = 1;
/* The __end__ linker symbol points to the beginning of the heap. */
Uint32 chunkCurr = (Uint32)&end;
/* __malloc_free_list is the head pointer to newlib-nano's link list of free chunks. */
Uint32 freeCurr = __malloc_free_list;
/* Calling _sbrk() with 0 reserves no more memory but it returns the current top of heap. */
Uint32 heapEnd = _sbrk(0);
/* printf("Heap Size: %lu\n", heapEnd - chunkCurr); */
char msg[100];
sprintf(msg, "Heap Size: %d e%08x s%08x ", heapEnd - chunkCurr, heapEnd, chunkCurr);
/* FNT_Print256_2bpp((volatile Uint8 *)SS_FONT,(Uint8 *)toto,12,216); */
slPrint((char*)msg, slLocate(1, 3));
/* Walk through the chunks until we hit the end of the heap. */
while (chunkCurr < heapEnd)
{
/* Assume the chunk is in use. Will update later. */
int isChunkFree = 0;
/* The first 32-bit word in a chunk is the size of the allocation. newlib-nano over allocates by 8 bytes. */
/* 4 bytes for this 32-bit chunk size and another 4 bytes to allow for 8 byte-alignment of returned pointer. */
Uint32 chunkSize = *(Uint32*)chunkCurr;
/* The start of the next chunk is right after the end of this one. */
Uint32 chunkNext = chunkCurr + chunkSize;
/* The free list is sorted by address. */
/* Check to see if we have found the next free chunk in the heap. */
if (chunkCurr == freeCurr)
{
/* Chunk is free so flag it as such. */
isChunkFree = 1;
/* The second 32-bit word in a free chunk is a pointer to the next free chunk (again sorted by address). */
freeCurr = *(Uint32*)(freeCurr + 4);
}
/* Skip past the 32-bit size field in the chunk header. */
chunkCurr += 4;
/* 8-byte align the data pointer. */
chunkCurr = (chunkCurr + 7) & ~7;
/*
** newlib-nano over allocates by 8 bytes, 4 bytes for the 32-bit chunk size and another 4 bytes to allow for 8
** byte-alignment of the returned pointer.
*/
chunkSize -= 8;
/* printf("Chunk: %lu Address: 0xlX Size: %lu %s\n", chunkNumber, chunkCurr, chunkSize, isChunkFree ? "CHUNK FREE" : ""); */
sprintf(msg, "%d A%04x S%04d %s", chunkNumber, chunkCurr, chunkSize, isChunkFree ? "CHUNK FREE" : "");
if (chunkNumber < 20)
slPrint((char*)msg, slLocate(0, chunkNumber * 10 + 10));
/*
** if(chunkNumber>=200)
** slPrint((char *)msg,slLocate(0,chunkNumber-200));
** if(chunkNumber>=230)
** slPrint((char *)msg,slLocate(20,chunkNumber-230));
*/
chunkCurr = chunkNext;
chunkNumber++;
}
}
#endif
/*
=============================================================================
LOCAL CONSTANTS
=============================================================================
*/
typedef struct
{
unsigned short bit0,bit1; /* 0-255 is a character, > is a pointer to a node */
} huffnode;
typedef struct
{
unsigned short RLEWtag;
#if MAPPLANES >= 4
unsigned short numplanes; /* unused, but WDC needs 2 bytes here for internal usage */
#endif
int headeroffsets[NUMMAPS];
} mapfiletype;
/*
=============================================================================
GLOBAL VARIABLES
=============================================================================
*/
unsigned short *mapsegs[MAPPLANES];
#if defined(EMBEDDED) && defined(SEGA_SATURN)
static maptype mapheaderseg;
#else
maptype *mapheaderseg[NUMMAPS];
#endif
#if !defined(VIEASM) || !defined(SEGA_SATURN)
unsigned char *audiosegs[NUMSNDCHUNKS];
#endif
unsigned char *grsegs[NUMCHUNKS];
mapfiletype *tinf;
/*
=============================================================================
LOCAL VARIABLES
=============================================================================
*/
char extension[5]; /* Need a string, not constant to change cache files */
#ifndef SEGA_SATURN
char graphext[5];
char audioext[5];
#endif
#if defined(USE_DATADIR) && defined(USE_DATADIR) && defined(SWITCH) || defined (N3DS) || defined(PS2) || defined(SEGA_SATURN) || defined(PSVITA) || defined(ZIPIT_Z2)
#ifdef SEGA_SATURN
static const char gheadname[] = DATADIR "VGAHEAD.";
static const char gfilename[] = DATADIR "VGAGRAPH.";
static const char gdictname[] = DATADIR "VGADICT.";
static const char mheadname[] = DATADIR "MAPHEAD.";
#else
static const char gheadname[] = DATADIR "vgahead.";
static const char gfilename[] = DATADIR "vgagraph.";
static const char gdictname[] = DATADIR "vgadict.";
static const char mheadname[] = DATADIR "maphead.";
#endif
#ifndef SEGA_SATURN
#ifndef CARMACIZED
static const char mfilename[] = DATADIR "maptemp.";
#endif
#ifdef CARMACIZED
static const char mfilecama[] = DATADIR "gamemaps.";
#endif
#ifndef VIEASM
static const char aheadname[] = DATADIR "audiohed.";
#endif
static const char afilename[] = DATADIR "audiot.";
#endif
#else
static const char gheadname[] = "vgahead.";
static const char gfilename[] = "vgagraph.";
static const char gdictname[] = "vgadict.";
static const char mheadname[] = "maphead.";
#ifdef CARMACIZED
static const char mfilecama[] = "gamemaps.";
#else
static const char mfilename[] = "maptemp.";
#endif
#ifndef VIEASM
static const char aheadname[] = "audiohed.";
#endif
static const char afilename[] = "audiot.";
#endif
#ifndef SEGA_SATURN
void CA_CannotOpen(const char *string);
#endif
static int grstarts[NUMCHUNKS + 1];
#if !defined(VIEASM) || !defined(SEGA_SATURN)
static int* audiostarts; /* array of offsets in audio / audiot */
#endif
#ifdef GRHEADERLINKED
huffnode *grhuffman;
#else
huffnode grhuffman[255];
#endif
int grhandle = -1; /* handle to EGAGRAPH */
int maphandle = -1; /* handle to MAPTEMP / GAMEMAPS */
#if !defined(VIEASM) || !defined(SEGA_SATURN)
int audiohandle = -1; /* handle to AUDIOT / AUDIO */
#endif
int chunkcomplen,chunkexplen;
#ifndef VIEASM
SDMode oldsoundmode;
#endif
static int GRFILEPOS(const uintptr_t idx)
{
#ifdef SEGA_SATURN
#define assert8(x) if(!(x)) { slPrint((char *)"asset test failed8", slLocate(10,20));return;}
#else
wlassert(idx < lengthof(grstarts));
#endif
return grstarts[idx];
}
/*
=============================================================================
LOW LEVEL ROUTINES
=============================================================================
*/
/*
============================
=
= CAL_GetGrChunkLength
=
= Gets the length of an explicit length chunk (not tiles)
= The file pointer is positioned so the compressed data can be read in next.
=
============================
*/
void CAL_GetGrChunkLength (int chunk)
{
#ifdef SEGA_SATURN
size_t pos = GRFILEPOS(chunk);
readChunks(grhandle, sizeof(chunkexplen), &pos, saturnChunk, (unsigned char*)&chunkexplen);
#else
w3slseek(grhandle, GRFILEPOS(chunk), SEEK_SET);
w3sread(grhandle, &chunkexplen, sizeof(chunkexplen));
#endif
chunkcomplen = GRFILEPOS(chunk+1)-GRFILEPOS(chunk)-4;
}
#ifndef SEGA_SATURN
/*
==========================
=
= CA_WriteFile
=
= Writes a file from a memory buffer
=
==========================
*/
boolean CA_WriteFile (const char *filename, void *ptr, int length)
{
int handle;
#if defined(DEVCPP)
handle = w3sopen(filename, O_CREAT | O_WRONLY | O_BINARY);
#else
handle = w3sopen(filename, O_CREAT | O_WRONLY | O_BINARY, 0644);
#endif
if (handle == -1)
return false;
if (!w3swrite (handle,ptr,length))
{
w3sclose (handle);
return false;
}
w3sclose (handle);
return true;
}
/*
==========================
=
= CA_LoadFile
=
= Allocate space for and load a file
=
==========================
*/
boolean CA_LoadFile (const char *filename, void **ptr)
{
intptr_t seek_size;
int handle;
#if defined(DEVCPP)
handle = w3sopen(filename, O_RDONLY | O_BINARY);
#else
handle = w3sopen(filename, O_RDONLY | O_BINARY, 0644);
#endif
if (handle == -1)
return false;
seek_size = w3slseek(handle, 0, SEEK_END);
w3slseek(handle, 0, SEEK_SET);
*ptr = SafeMalloc(seek_size);
if (!w3sread (handle,*ptr,(unsigned int)seek_size))
{
w3sclose (handle);
return false;
}
w3sclose (handle);
return true;
}
#endif
/*
============================================================================
COMPRESSION routines, see JHUFF.C for more
============================================================================
*/
static void CAL_HuffExpand(unsigned char *source, unsigned char *dest, int length, huffnode *hufftable)
{
unsigned char *end;
huffnode *headptr, *huffptr;
int written = 0;
unsigned char val;
unsigned char mask;
unsigned short nodeval;
if(!length || !dest)
{
Quit("length or dest is null!");
return;
}
headptr = hufftable+254; /* head node is always node 254 */
end=dest+length;
val = *source++;
mask = 1;
huffptr = headptr;
while(1)
{
if(!(val & mask))
nodeval = huffptr->bit0;
else
nodeval = huffptr->bit1;
if(mask==0x80)
{
val = *source++;
mask = 1;
}
else mask <<= 1;
if(nodeval<256)
{
*dest++ = (unsigned char) nodeval;
written++;
huffptr = headptr;
if(dest>=end) break;
}
else
{
huffptr = hufftable + (nodeval - 256);
}
}
}
/*
======================
=
= CAL_CarmackExpand
=
= Length is the length of the EXPANDED data
=
======================
*/
#define NEARTAG 0xa7
#define FARTAG 0xa8
void CAL_CarmackExpand (unsigned char *source, unsigned short *dest, int length)
{
unsigned short count, offset;
unsigned char *inptr;
unsigned short *copyptr, *outptr;
length/=2;
inptr = (unsigned char *) source;
outptr = dest;
while (length>0)
{
unsigned short ch = READWORD(inptr);
unsigned short chhigh = ch >> 8;
inptr += 2;
if (chhigh == NEARTAG)
{
count = ch&0xff;
if (!count)
{ /* have to insert a word containing the tag byte */
ch |= *inptr++;
*outptr++ = ch;
length--;
}
else
{
offset = *inptr++;
copyptr = outptr - offset;
length -= count;
if(length<0) return;
while (count--)
*outptr++ = *copyptr++;
}
}
else if (chhigh == FARTAG)
{
count = ch&0xff;
if (!count)
{ /* have to insert a word containing the tag byte */
ch |= *inptr++;
*outptr++ = ch;
length --;
}
else
{
offset = READWORD(inptr);
inptr += 2;
copyptr = dest + offset;
length -= count;
if(length<0) return;
while (count--)
*outptr++ = *copyptr++;
}
}
else
{
*outptr++ = ch;
length --;
}
}
}
/*
======================
=
= CA_RLEWcompress
=
======================
*/
int CA_RLEWCompress (unsigned short *source, int length, unsigned short *dest, unsigned short rlewtag)
{
unsigned i;
unsigned short *start,*end;
start = dest;
end = source + (length+1)/2;
/*
** compress it
*/
do
{
unsigned short count = 1;
unsigned short value = *source++;
while (*source == value && source<end)
{
count++;
source++;
}
if (count>3 || value == rlewtag)
{
/*
** send a tag / count / value string
*/
*dest++ = rlewtag;
*dest++ = count;
*dest++ = value;
}
else
{
/*
** send word without compressing
*/
for (i=1;i<=count;i++)
*dest++ = value;
}
} while (source<end);
return (int)(2*(dest-start));
}
#ifndef SEGA_SATURN
/*
======================
=
= CA_RLEWexpand
= length is EXPANDED length
=
======================
*/
void CA_RLEWexpand (unsigned short *source, unsigned short *dest, int length, unsigned short rlewtag)
{
unsigned short count,i;
unsigned short *end=dest+length/2;
/*
** expand it
*/
do
{
unsigned short value = *source++;
if (value != rlewtag)
/*
** uncompressed
*/
*dest++=value;
else
{
/*
** compressed string
*/
count = *source++;
value = *source++;
for (i=1;i<=count;i++)
*dest++ = value;
}
} while (dest<end);
}
#endif
/*
=============================================================================
CACHE MANAGER ROUTINES
=============================================================================
*/
/*
======================
=
= CAL_SetupGrFile
=
======================
*/
void CAL_SetupGrFile (void)
{
#ifdef SEGA_SATURN
char fname[13];
/*
int handle;
unsigned int j=0;
*/
unsigned char* compseg;
long fileSize;
long headersize;
Sint32 fileId;
unsigned char x;
unsigned char data[lengthof(grstarts) * 3];
const unsigned char* d;
int* i;
int chunkcomplen;
unsigned long k;
#ifdef GRHEADERLINKED
grhuffman = (huffnode*)&EGAdict;
grstarts = (int32_t _seg*)FP_SEG(&EGAhead);
#else
/*
** load ???dict.ext (huffman dictionary for graphics files)
*/
strcpy(fname, gdictname);
strcat(fname, extension);
/*
while (fname[j])
{
fname[j]= toupper(fname[j]);
j++;
}*/
/* i=0; */
/*
handle = open(fname, O_RDONLY | O_BINARY);
if (handle == -1)
if(stat(fname, NULL))
CA_CannotOpen(fname);
*/
fileId = GFS_NameToId((char*)fname);
/* fileSize = GetFileSize(fileId); */
compseg = (unsigned char*)saturnChunk + 0x8000;
/*
** CHECKMALLOCRESULT(vbtHuff);
** slPrint((char *)"CAL_SetupGrFile1 ",slLocate(10,12));
*/
GFS_Load(fileId, 0, (void*)compseg, sizeof(grhuffman)); /* lecture VGADICT full */
huffnode* grhuffmanptr = (huffnode*)grhuffman;
for (x = 0; x < 255; x++)
{
/* slPrint((char *)"CAL_SetupGrFile2 ",slLocate(10,12)); */
grhuffmanptr->bit0 = compseg[0] | (compseg[1] << 8);
grhuffmanptr->bit1 = compseg[2] | (compseg[3] << 8);
grhuffmanptr++;
compseg += 4;
}
/* j=0; */
/* read(handle, grhuffman, sizeof(grhuffman)); */
/* close(handle); */
/* load the data offsets from ???head.ext */
strcpy(fname, gheadname);
strcat(fname, extension);
/*
while (fname[j])
{
fname[j]= toupper(fname[j]);
j++;
}
j=0;*/
/*
handle = open(fname, O_RDONLY | O_BINARY);
if (handle == -1)
if(stat(fname, NULL))
CA_CannotOpen(fname);
slSynch();
slPrint((char *)"CAL_SetupGrFile3 ",slLocate(10,12));
*/
fileId = GFS_NameToId((char*)fname);
fileSize = GetFileSize(fileId);
headersize = fileSize;
/*
** lseek(handle, 0, SEEK_END);
** lseek(handle, 0, SEEK_SET);
** eadersize= 157*3;
*/
#if 0
if (headersize / 3 != (long)(lengthof(grstarts) - numEpisodesMissing))
{
/* Quit("Wolf4SDL was not compiled for these data files:\n"
" %s contains a wrong number of offsets (%i instead of %i)!\n\n"
" Please check whether you are using the right executable!\n"
"(For mod developers: perhaps you forgot to update NUMCHUNKS?)",
fname, headersize / 3, lengthof(grstarts) - numEpisodesMissing);
*/
char msg[200];
sprintf(msg, "Wolf4SDL was not compiled for these data files:\n"
" %s contains a wrong number of offsets (%i instead of %i)!\n\n"
" Please check whether you are using the right executable!\n"
"(For mod developers: perhaps you forgot to update NUMCHUNKS?)",
fname, headersize / 3, lengthof(grstarts) - numEpisodesMissing);
slPrint((char*)msg, slLocate(1, 3));
while (1);
}
#endif
/* slPrint((char *)"CAL_SetupGrFile4 ",slLocate(10,12)); */
GFS_Load(fileId, 0, (void*)data, sizeof(data)); /* lecture de VGAHEAD full */
/*
** read(handle, data, sizeof(data));
** close(handle);
*/
d = data;
for (i = grstarts; i != endof(grstarts); ++i)
{
/* slPrint((char *)"CAL_SetupGrFile5 ",slLocate(10,12)); */
const int val = d[0] | d[1] << 8 | d[2] << 16;
*i = (val == 0x00FFFFFF ? -1 : val);
d += 3;
}
#endif
/* slPrint((char *)"CAL_SetupGrFile6 ",slLocate(10,12)); */
/*
** Open the graphics file, leaving it open until the game is finished
*/
strcpy(fname, gfilename);
strcat(fname, extension);
/*
while (fname[j])
{
fname[j]= toupper(fname[j]);
j++;
}
j=0;*/
/*
** grhandle = open(fname, O_RDONLY | O_BINARY);
** if (grhandle == -1)
** if(stat(fname, NULL))
** CA_CannotOpen(fname);
*/
grhandle = GFS_NameToId((char*)fname);
/* fileSize = GetFileSize(grhandle); */
/*
** load the pic and sprite headers into the arrays in the data segment
*/
/* slPrint((char *)"CAL_SetupGrFile7 ",slLocate(10,12)); */
pictable = (pictabletype*)malloc(NUMPICS * sizeof(pictabletype));
chunkcomplen = CAL_GetGrChunkLength(STRUCTPIC); /* position file pointer */
/* compseg =(byte*)malloc((chunkcomplen)); */
compseg = (unsigned char*)saturnChunk;
/* CHECKMALLOCRESULT(compseg); */
GFS_Load(grhandle, 0, (void*)compseg, (chunkcomplen));
/*
** CAL_HuffExpand(&compseg[4], (byte*)pictable, NUMPICS * sizeof(pictabletype), grhuffman);
** slPrint((char *)"CAL_SetupGrFile8 ",slLocate(10,12));
*/
CAL_HuffExpand(&compseg[4], (unsigned char*)pictable, NUMPICS * sizeof(pictabletype), grhuffman);
/* slPrint((char *)"CAL_SetupGrFile9 ",slLocate(10,12)); */
for (k = 0; k < NUMPICS; k++)
{
/* slPrint((char *)"CAL_SetupGrFile10 ",slLocate(10,12)); */
pictable[k].height = SWAP_BYTES_16(pictable[k].height);
pictable[k].width = SWAP_BYTES_16(pictable[k].width);
}
/* slPrint((char *)"CAL_SetupGrFile11 ",slLocate(10,12)); */
compseg = NULL;
/* VBT correct */
#else
char fname[13];
int handle;
unsigned char *compseg;
intptr_t headersize;
int expectedsize;
unsigned char data[lengthof(grstarts) * 3];
unsigned char* d;
int* i;
/*
** load ???dict.ext (huffman dictionary for graphics files)
*/
strcpy(fname,gdictname);
strcat(fname,graphext);
#if defined(DEVCPP)
handle = w3sopen(fname, O_RDONLY | O_BINARY);
#else
handle = w3sopen(fname, O_RDONLY | O_BINARY, 0644);
#endif
if (handle == -1)
CA_CannotOpen(fname);
w3sread(handle, grhuffman, sizeof(grhuffman));
w3sclose(handle);
/* load the data offsets from ???head.ext */
strcpy(fname,gheadname);
strcat(fname,graphext);
#if defined(DEVCPP)
handle = w3sopen(fname, O_RDONLY | O_BINARY);
#else
handle = w3sopen(fname, O_RDONLY | O_BINARY, 644);
#endif
if (handle == -1)
CA_CannotOpen(fname);
headersize = w3slseek(handle, 0, SEEK_END);
w3slseek(handle, 0, SEEK_SET);
expectedsize = lengthof(grstarts);
if(!param_ignorenumchunks && headersize / 3 != (long) expectedsize)
Quit("Wolf4SDL was not compiled for these data files:\n"
"%s contains a wrong number of offsets (%i instead of %i)!\n\n"
"Please check whether you are using the right executable!\n"
"(For mod developers: perhaps you forgot to update NUMCHUNKS?)",
fname, headersize / 3, expectedsize);
w3sread(handle, data, sizeof(data));
w3sclose(handle);
d = data;
for (i = grstarts; i != endof(grstarts); ++i)
{
int val = d[0] | d[1] << 8 | d[2] << 16;
*i = (val == 0x00FFFFFF ? -1 : val);
d += 3;
}
/*
** Open the graphics file
*/
strcpy(fname,gfilename);
strcat(fname,graphext);
#if defined(DEVCPP)
grhandle = w3sopen(fname, O_RDONLY | O_BINARY);
#else
grhandle = w3sopen(fname, O_RDONLY | O_BINARY, 0644);
#endif
if (grhandle == -1)
CA_CannotOpen(fname);
/*
** load the pic and sprite headers into the arrays in the data segment
*/
pictable = wlcast_conversion(pictabletype*, SafeMalloc(NUMPICS * sizeof(*pictable)));
CAL_GetGrChunkLength(STRUCTPIC); /* position file pointer */
compseg = wlcast_conversion(unsigned char*, SafeMalloc(chunkcomplen));
w3sread (grhandle,compseg,chunkcomplen);
CAL_HuffExpand(compseg, (unsigned char*)pictable, NUMPICS * sizeof(*pictable), grhuffman);
free(compseg);
CA_CacheGrChunks ();
w3sclose (grhandle);
#endif
}
/* ========================================================================== */
/*
======================
=
= CAL_SetupMapFile
=
======================
*/
#ifdef SEGA_SATURN
long CAL_SetupMapFile(void)
#else
void CAL_SetupMapFile (void)
#endif
{
#ifdef SEGA_SATURN
int i;
int length, pos;
char fname[13];
long fileSize;
unsigned char* maphandleptr;
/*
** load maphead.ext (offsets and tileinfo for map file)
*/
strcpy(fname, mheadname);
strcat(fname, extension);
Sint32 fileId;
fileId = GFS_NameToId((char*)fname);
/* fileSize = GetFileSize(fileId); */ /* utile */
length = NUMMAPS * 4 + 2; /* used to be "filelength(handle);" */
/* mapfiletype *tinf=(mapfiletype *) malloc(sizeof(mapfiletype)); */
mapfiletype* tinf = (mapfiletype*)saturnChunk;
GFS_Load(fileId, 0, (void*)tinf, length);
/* read(handle, tinf, length); */
/*
** open the data file
*/
#ifdef CARMACIZED
strcpy(fname, "GAMEMAPS.");
strcat(fname, extension);
/* while (fname[i])
{
fname[i]= toupper(fname[i]);
i++;
}*/
maphandle = GFS_NameToId((char*)fname);
fileSize = GetFileSize(maphandle);
#else
strcpy(fname, mfilename);
strcat(fname, extension);
maphandle = open(fname, O_RDONLY | O_BINARY);
if (maphandle == -1)
CA_CannotOpen(fname);
#endif
/*
** load all map header
*/
pos = tinf->headeroffsets[mapnum];
/*
** slPrintHex(pos, slLocate(10, 2));
** slPrintHex(fileSize, slLocate(10, 3));
*/
if (pos < 0) /* $FFFFFFFF start is a sparse map */
return fileSize;
slPrintHex(pos, slLocate(10, 2));
maphandleptr = (unsigned char*)(((int)saturnChunk + length + (4 - 1)) & -4);
readChunks(maphandle, sizeof(maptype), &pos, maphandleptr, (unsigned char*)&mapheaderseg);
/* memcpy((memptr)&mapheaderseg,saturnChunk+0x500,sizeof(maptype)); */
#ifndef EMBEDDED
mapheaderseg[mapnum] = (maptype*)((saturnChunk + sizeof(mapfiletype) + fileSize + (8 - 1)) & -4);
/* CHECKMALLOCRESULT(mapheaderseg[mapnum]); */
SafeMalloc(mapheaderseg[mapnum]);
/* read (maphandle,(memptr)mapheaderseg[i],sizeof(maptype)); */
memcpy((memptr)mapheaderseg[mapnum], maphandleptr, sizeof(maptype));
/*
** allocate space for 3 64*64 planes
*/
for (i = 0; i < MAPPLANES; i++)
{
mapheaderseg[mapnum]->planestart[i] = SWAP_BYTES_32(mapheaderseg[mapnum]->planestart[i]);
mapheaderseg[mapnum]->planelength[i] = SWAP_BYTES_16(mapheaderseg[mapnum]->planelength[i]);
mapsegs[i] = (unsigned short*)SATURN_MAPSEG_ADDR + (0x2000 * i);
/* mapsegs[i]=(word *) malloc(maparea*2); */
}
mapheaderseg[mapnum]->width = SWAP_BYTES_16(mapheaderseg[mapnum]->width);
mapheaderseg[mapnum]->height = SWAP_BYTES_16(mapheaderseg[mapnum]->height);
#else
/*
** allocate space for 3 64*64 planes
*/
/* if(mapheaderseg.width>0xff) */
{
for (i = 0; i < MAPPLANES; i++)
{
mapheaderseg.planestart[i] = SWAP_BYTES_32(mapheaderseg.planestart[i]);
/* slPrintHex(mapheaderseg.planestart[i], slLocate(10, 6 + i * 2)); */
mapheaderseg.planelength[i] = SWAP_BYTES_16(mapheaderseg.planelength[i]);
/* slPrintHex(mapheaderseg.planelength[i], slLocate(10, 6 + (i * 2) + 1));
** mapsegs[i]=(word *)SATURN_MAPSEG_ADDR+(0x2000*i);
*/
if (mapsegs[i] == NULL) mapsegs[i] = (word*)malloc(maparea * 2);
/* mapsegs[i]=(word *) malloc(maparea*2); */
}
mapheaderseg.width = SWAP_BYTES_16(mapheaderseg.width);
/* slPrintHex(mapheaderseg.width, slLocate(10, 4)); */
mapheaderseg.height = SWAP_BYTES_16(mapheaderseg.height);
}
/* slPrintHex(mapheaderseg.height, slLocate(10, 5)); */
#endif
maphandleptr = NULL;
tinf = NULL;
memcpy(source, Chunks, compressed);
return fileSize;
#else
int i;
int handle;
int pos;
#if defined(USE_DATADIR) && defined(USE_DATADIR) && defined(SWITCH) || defined (N3DS) || defined(PS2) || defined(SEGA_SATURN) || defined(PSVITA) || defined(ZIPIT_Z2)
char fname[13 + sizeof(DATADIR)];