Mercurial > vba-linux

     1 #include <cstdio>

     2 #include <cstdlib>

     3 #include <cstring>

     4 #include <zlib.h>

     5 

     6 extern "C" {

     7 #include <png.h>

     8 }

     9 

    10 #if 0

    11 #include "unrarlib.h"

    12 #endif

    13 

    14 #include "unzip.h"

    15 

    16 #include "../NLS.h"

    17 #include "System.h"

    18 #include "Util.h"

    19 #include "../gba/Flash.h"

    20 #include "../gba/RTC.h"

    21 

    22 extern "C" {

    23 #include "memgzio.h"

    24 }

    25 

    26 #ifndef _MSC_VER

    27 #define _stricmp strcasecmp

    28 #endif // ! _MSC_VER

    29 

    30 extern int32 cpuSaveType;

    31 

    32 extern int systemColorDepth;

    33 extern int systemRedShift;

    34 extern int systemGreenShift;

    35 extern int systemBlueShift;

    36 

    37 extern u16 systemColorMap16[0x10000];

    38 extern u32 systemColorMap32[0x10000];

    39 

    40 static int	   (ZEXPORT *utilGzWriteFunc)(gzFile, voidp, unsigned int) = NULL;

    41 static int	   (ZEXPORT *utilGzReadFunc)(gzFile, voidp, unsigned int)  = NULL;

    42 static int	   (ZEXPORT *utilGzCloseFunc)(gzFile) = NULL;

    43 static z_off_t (ZEXPORT *utilGzSeekFunc)(gzFile, z_off_t, int) = NULL;

    44 static z_off_t (ZEXPORT *utilGzTellFunc)(gzFile) = NULL;

    45 

    46 //Kludge to get it to compile in Linux, GCC cannot convert

    47 //gzwrite function pointer to the type of utilGzWriteFunc

    48 //due to void* and const void* differences

    49 //--Felipe 

    50 int gzWrite(gzFile file, void* buf, unsigned len){

    51 	return gzwrite(file,buf,len);

    52 }

    53 

    54 void utilPutDword(u8 *p, u32 value)

    55 {

    56 	*p++ = value & 255;

    57 	*p++ = (value >> 8) & 255;

    58 	*p++ = (value >> 16) & 255;

    59 	*p	 = (value >> 24) & 255;

    60 }

    61 

    62 void utilPutWord(u8 *p, u16 value)

    63 {

    64 	*p++ = value & 255;

    65 	*p	 = (value >> 8) & 255;

    66 }

    67 

    68 void utilWriteBMP(u8 *b, int w, int h, int dstDepth, u8 *pix)

    69 {

    70 	int sizeX = w;

    71 	int sizeY = h;

    72 

    73 	switch (dstDepth > 0 ? dstDepth : systemColorDepth)

    74 	{

    75 	case 16:

    76 	{

    77 		u16 *p = (u16 *)(pix + (w + 2) * (h) * 2); // skip first black line

    78 		for (int y = 0; y < sizeY; y++)

    79 		{

    80 			for (int x = 0; x < sizeX; x++)

    81 			{

    82 				u16 v = *p++;

    83 

    84 				*b++ = ((v >> systemBlueShift) & 0x01f) << 3; // B

    85 				*b++ = ((v >> systemGreenShift) & 0x001f) << 3; // G

    86 				*b++ = ((v >> systemRedShift) & 0x001f) << 3; // R

    87 			}

    88 			p++; // skip black pixel for filters

    89 			p++; // skip black pixel for filters

    90 			p -= 2 * (w + 2);

    91 		}

    92 		break;

    93 	}

    94 	case 24:

    95 	{

    96 		u8 *pixU8 = (u8 *)pix + 3 * w * (h - 1);

    97 		for (int y = 0; y < sizeY; y++)

    98 		{

    99 			for (int x = 0; x < sizeX; x++)

   100 			{

   101 				if (systemRedShift > systemBlueShift)

   102 				{

   103 					*b++ = *pixU8++; // B

   104 					*b++ = *pixU8++; // G

   105 					*b++ = *pixU8++; // R

   106 				}

   107 				else

   108 				{

   109 					int red	  = *pixU8++;

   110 					int green = *pixU8++;

   111 					int blue  = *pixU8++;

   112 

   113 					*b++ = blue;

   114 					*b++ = green;

   115 					*b++ = red;

   116 				}

   117 			}

   118 			pixU8 -= 2 * 3 * w;

   119 		}

   120 		break;

   121 	}

   122 	case 32:

   123 	{

   124 		u32 *pixU32 = (u32 *)(pix + 4 * (w + 1) * (h));

   125 		for (int y = 0; y < sizeY; y++)

   126 		{

   127 			for (int x = 0; x < sizeX; x++)

   128 			{

   129 				u32 v = *pixU32++;

   130 

   131 				*b++ = ((v >> systemBlueShift) & 0x001f) << 3; // B

   132 				*b++ = ((v >> systemGreenShift) & 0x001f) << 3; // G

   133 				*b++ = ((v >> systemRedShift) & 0x001f) << 3; // R

   134 			}

   135 			pixU32++;

   136 			pixU32 -= 2 * (w + 1);

   137 		}

   138 		break;

   139 	}

   140 	}

   141 }

   142 

   143 bool utilWriteBMPFile(const char *fileName, int w, int h, u8 *pix)

   144 {

   145 	u8 writeBuffer[256 * 3];

   146 

   147 	FILE *fp = fopen(fileName, "wb");

   148 

   149 	if (!fp)

   150 	{

   151 		systemMessage(MSG_ERROR_CREATING_FILE, N_("Error creating file %s"), fileName);

   152 		return false;

   153 	}

   154 

   155 	struct

   156 	{

   157 		u8 ident[2];

   158 		u8 filesize[4];

   159 		u8 reserved[4];

   160 		u8 dataoffset[4];

   161 		u8 headersize[4];

   162 		u8 width[4];

   163 		u8 height[4];

   164 		u8 planes[2];

   165 		u8 bitsperpixel[2];

   166 		u8 compression[4];

   167 		u8 datasize[4];

   168 		u8 hres[4];

   169 		u8 vres[4];

   170 		u8 colors[4];

   171 		u8 importantcolors[4];

   172 		//    u8 pad[2];

   173 	} bmpheader;

   174 	memset(&bmpheader, 0, sizeof(bmpheader));

   175 

   176 	bmpheader.ident[0] = 'B';

   177 	bmpheader.ident[1] = 'M';

   178 

   179 	u32 fsz = sizeof(bmpheader) + w * h * 3;

   180 	utilPutDword(bmpheader.filesize, fsz);

   181 	utilPutDword(bmpheader.dataoffset, 0x36);

   182 	utilPutDword(bmpheader.headersize, 0x28);

   183 	utilPutDword(bmpheader.width, w);

   184 	utilPutDword(bmpheader.height, h);

   185 	utilPutDword(bmpheader.planes, 1);

   186 	utilPutDword(bmpheader.bitsperpixel, 24);

   187 	utilPutDword(bmpheader.datasize, 3 * w * h);

   188 

   189 	fwrite(&bmpheader, 1, sizeof(bmpheader), fp);

   190 

   191 #if 0

   192 	// FIXME: need sufficient buffer

   193 	utilWriteBMP(writeBuffer, w, h, systemColorDepth, pix);

   194 #else

   195 	u8 *b = writeBuffer;

   196 

   197 	int sizeX = w;

   198 	int sizeY = h;

   199 

   200 	switch (systemColorDepth)

   201 	{

   202 	case 16:

   203 	{

   204 		u16 *p = (u16 *)(pix + (w + 2) * (h) * 2); // skip first black line

   205 		for (int y = 0; y < sizeY; y++)

   206 		{

   207 			for (int x = 0; x < sizeX; x++)

   208 			{

   209 				u16 v = *p++;

   210 

   211 				*b++ = ((v >> systemBlueShift) & 0x01f) << 3; // B

   212 				*b++ = ((v >> systemGreenShift) & 0x001f) << 3; // G

   213 				*b++ = ((v >> systemRedShift) & 0x001f) << 3; // R

   214 			}

   215 			p++; // skip black pixel for filters

   216 			p++; // skip black pixel for filters

   217 			p -= 2 * (w + 2);

   218 			fwrite(writeBuffer, 1, 3 * w, fp);

   219 

   220 			b = writeBuffer;

   221 		}

   222 		break;

   223 	}

   224 	case 24:

   225 	{

   226 		u8 *pixU8 = (u8 *)pix + 3 * w * (h - 1);

   227 		for (int y = 0; y < sizeY; y++)

   228 		{

   229 			for (int x = 0; x < sizeX; x++)

   230 			{

   231 				if (systemRedShift > systemBlueShift)

   232 				{

   233 					*b++ = *pixU8++; // B

   234 					*b++ = *pixU8++; // G

   235 					*b++ = *pixU8++; // R

   236 				}

   237 				else

   238 				{

   239 					int red	  = *pixU8++;

   240 					int green = *pixU8++;

   241 					int blue  = *pixU8++;

   242 

   243 					*b++ = blue;

   244 					*b++ = green;

   245 					*b++ = red;

   246 				}

   247 			}

   248 			pixU8 -= 2 * 3 * w;

   249 			fwrite(writeBuffer, 1, 3 * w, fp);

   250 

   251 			b = writeBuffer;

   252 		}

   253 		break;

   254 	}

   255 	case 32:

   256 	{

   257 		u32 *pixU32 = (u32 *)(pix + 4 * (w + 1) * (h));

   258 		for (int y = 0; y < sizeY; y++)

   259 		{

   260 			for (int x = 0; x < sizeX; x++)

   261 			{

   262 				u32 v = *pixU32++;

   263 

   264 				*b++ = ((v >> systemBlueShift) & 0x001f) << 3; // B

   265 				*b++ = ((v >> systemGreenShift) & 0x001f) << 3; // G

   266 				*b++ = ((v >> systemRedShift) & 0x001f) << 3; // R

   267 			}

   268 			pixU32++;

   269 			pixU32 -= 2 * (w + 1);

   270 

   271 			fwrite(writeBuffer, 1, 3 * w, fp);

   272 

   273 			b = writeBuffer;

   274 		}

   275 		break;

   276 	}

   277 	}

   278 #endif

   279 

   280 	fclose(fp);

   281 

   282 	return true;

   283 }

   284 

   285 bool utilWritePNGFile(const char *fileName, int w, int h, u8 *pix)

   286 {

   287   u8 writeBuffer[256 * 3];

   288 

   289   FILE *fp = fopen(fileName, "wb");

   290 

   291   if (!fp)

   292     {

   293       systemMessage(MSG_ERROR_CREATING_FILE, N_("Error creating file %s"), fileName);

   294       return false;

   295     }

   296 

   297   png_structp png_ptr = png_create_write_struct(PNG_LIBPNG_VER_STRING,

   298 						NULL,

   299 						NULL,

   300 						NULL);

   301   if (!png_ptr)

   302     {

   303       fclose(fp);

   304       return false;

   305     }

   306 

   307   png_infop info_ptr = png_create_info_struct(png_ptr);

   308 

   309   if (!info_ptr)

   310     {

   311       png_destroy_write_struct(&png_ptr, NULL);

   312       fclose(fp);

   313       return false;

   314     }

   315 

   316   if (setjmp(png_jmpbuf(png_ptr)))

   317     {

   318       png_destroy_write_struct(&png_ptr, NULL);

   319       fclose(fp);

   320       return false;

   321     }

   322 

   323   png_init_io(png_ptr, fp);

   324 

   325   png_set_IHDR(png_ptr,

   326 	       info_ptr,

   327 	       w,

   328 	       h,

   329 	       8,

   330 	       PNG_COLOR_TYPE_RGB,

   331 	       PNG_INTERLACE_NONE,

   332 	       PNG_COMPRESSION_TYPE_DEFAULT,

   333 	       PNG_FILTER_TYPE_DEFAULT);

   334 

   335   png_write_info(png_ptr, info_ptr);

   336 

   337   u8 *b = writeBuffer;

   338 

   339   int sizeX = w;

   340   int sizeY = h;

   341 

   342   switch (systemColorDepth)

   343     {

   344     case 16:

   345       {

   346 	u16 *p = (u16 *)(pix + (w + 2) * 2); // skip first black line

   347 	for (int y = 0; y < sizeY; y++)

   348 	  {

   349 	    for (int x = 0; x < sizeX; x++)

   350 	      {

   351 		u16 v = *p++;

   352 

   353 		*b++ = ((v >> systemRedShift) & 0x001f) << 3; // R

   354 		*b++ = ((v >> systemGreenShift) & 0x001f) << 3; // G

   355 		*b++ = ((v >> systemBlueShift) & 0x01f) << 3; // B

   356 	      }

   357 	    p++; // skip black pixel for filters

   358 	    p++; // skip black pixel for filters

   359 	    png_write_row(png_ptr, writeBuffer);

   360 

   361 	    b = writeBuffer;

   362 	  }

   363 	break;

   364       }

   365     case 24:

   366       {

   367 	u8 *pixU8 = (u8 *)pix;

   368 	for (int y = 0; y < sizeY; y++)

   369 	  {

   370 	    for (int x = 0; x < sizeX; x++)

   371 	      {

   372 		if (systemRedShift < systemBlueShift)

   373 		  {

   374 		    *b++ = *pixU8++; // R

   375 		    *b++ = *pixU8++; // G

   376 		    *b++ = *pixU8++; // B

   377 		  }

   378 		else

   379 		  {

   380 		    int blue  = *pixU8++;

   381 		    int green = *pixU8++;

   382 		    int red	  = *pixU8++;

   383 

   384 		    *b++ = red;

   385 		    *b++ = green;

   386 		    *b++ = blue;

   387 		  }

   388 	      }

   389 	    png_write_row(png_ptr, writeBuffer);

   390 

   391 	    b = writeBuffer;

   392 	  }

   393 	break;

   394       }

   395     case 32:

   396       {

   397 	u32 *pixU32 = (u32 *)(pix + 4 * (w + 1));

   398 	for (int y = 0; y < sizeY; y++)

   399 	  {

   400 	    for (int x = 0; x < sizeX; x++)

   401 	      {

   402 		u32 v = *pixU32++;

   403 

   404 		*b++ = ((v >> systemRedShift) & 0x001f) << 3; // R

   405 		*b++ = ((v >> systemGreenShift) & 0x001f) << 3; // G

   406 		*b++ = ((v >> systemBlueShift) & 0x001f) << 3; // B

   407 	      }

   408 	    pixU32++;

   409 

   410 	    png_write_row(png_ptr, writeBuffer);

   411 

   412 	    b = writeBuffer;

   413 	  }

   414 	break;

   415       }

   416     }

   417 

   418   png_write_end(png_ptr, info_ptr);

   419 

   420   png_destroy_write_struct(&png_ptr, &info_ptr);

   421 

   422   fclose(fp);

   423 

   424   return true;

   425 }

   426 

   427 static int utilReadInt2(FILE *f)

   428 {

   429 	int res = 0;

   430 	int c	= fgetc(f);

   431 	if (c == EOF)

   432 		return -1;

   433 	res = c;

   434 	c	= fgetc(f);

   435 	if (c == EOF)

   436 		return -1;

   437 	return c + (res << 8);

   438 }

   439 

   440 static int utilReadInt3(FILE *f)

   441 {

   442 	int res = 0;

   443 	int c	= fgetc(f);

   444 	if (c == EOF)

   445 		return -1;

   446 	res = c;

   447 	c	= fgetc(f);

   448 	if (c == EOF)

   449 		return -1;

   450 	res = c + (res << 8);

   451 	c	= fgetc(f);

   452 	if (c == EOF)

   453 		return -1;

   454 	return c + (res << 8);

   455 }

   456 

   457 void utilApplyIPS(const char *ips, u8 * *r, int *s)

   458 {

   459 	// from the IPS spec at http://zerosoft.zophar.net/ips.htm

   460 	FILE *f = fopen(ips, "rb");

   461 	if (!f)

   462 		return;

   463 	u8 *rom	 = *r;

   464 	int size = *s;

   465 	if (fgetc(f) == 'P' &&

   466 	    fgetc(f) == 'A' &&

   467 	    fgetc(f) == 'T' &&

   468 	    fgetc(f) == 'C' &&

   469 	    fgetc(f) == 'H')

   470 	{

   471 		int b;

   472 		int offset;

   473 		int len;

   474 		for (;; )

   475 		{

   476 			// read offset

   477 			offset = utilReadInt3(f);

   478 			// if offset == EOF, end of patch

   479 			if (offset == 0x454f46)

   480 				break;

   481 			// read length

   482 			len = utilReadInt2(f);

   483 			if (!len)

   484 			{

   485 				// len == 0, RLE block

   486 				len = utilReadInt2(f);

   487 				// byte to fill

   488 				int c = fgetc(f);

   489 				if (c == -1)

   490 					break;

   491 				b = (u8)c;

   492 			}

   493 			else

   494 				b = -1;

   495 			// check if we need to reallocate our ROM

   496 			if ((offset + len) >= size)

   497 			{

   498 				size *= 2;

   499 				rom	  = (u8 *)realloc(rom, size);

   500 				*r	  = rom;

   501 				*s	  = size;

   502 			}

   503 			if (b == -1)

   504 			{

   505 				// normal block, just read the data

   506 				if (fread(&rom[offset], 1, len, f) != (size_t)len)

   507 					break;

   508 			}

   509 			else

   510 			{

   511 				// fill the region with the given byte

   512 				while (len--)

   513 				{

   514 					rom[offset++] = b;

   515 				}

   516 			}

   517 		}

   518 	}

   519 	// close the file

   520 	fclose(f);

   521 }

   522 

   523 extern bool8 cpuIsMultiBoot;

   524 

   525 bool utilIsGBAImage(const char *file)

   526 {

   527 	cpuIsMultiBoot = false;

   528 	if (strlen(file) > 4)

   529 	{

   530 		const char *p = strrchr(file, '.');

   531 

   532 		if (p != NULL)

   533 		{

   534 			if (_stricmp(p, ".gba") == 0)

   535 				return true;

   536 			if (_stricmp(p, ".agb") == 0)

   537 				return true;

   538 			if (_stricmp(p, ".bin") == 0)

   539 				return true;

   540 			if (_stricmp(p, ".elf") == 0)

   541 				return true;

   542 			if (_stricmp(p, ".mb") == 0)

   543 			{

   544 				cpuIsMultiBoot = true;

   545 				return true;

   546 			}

   547 		}

   548 	}

   549 

   550 	return false;

   551 }

   552 

   553 bool utilIsGBImage(const char *file)

   554 {

   555 	if (strlen(file) > 4)

   556 	{

   557 		const char *p = strrchr(file, '.');

   558 

   559 		if (p != NULL)

   560 		{

   561 			if (_stricmp(p, ".gb") == 0)

   562 				return true;

   563 			if (_stricmp(p, ".gbc") == 0)

   564 				return true;

   565 			if (_stricmp(p, ".cgb") == 0)

   566 				return true;

   567 			if (_stricmp(p, ".sgb") == 0)

   568 				return true;

   569 		}

   570 	}

   571 

   572 	return false;

   573 }

   574 

   575 bool utilIsGBABios(const char *file)

   576 {

   577 	if (strlen(file) > 4)

   578 	{

   579 		const char *p = strrchr(file, '.');

   580 

   581 		if (p != NULL)

   582 		{

   583 			if (_stricmp(p, ".gba") == 0)

   584 				return true;

   585 			if (_stricmp(p, ".agb") == 0)

   586 				return true;

   587 			if (_stricmp(p, ".bin") == 0)

   588 				return true;

   589 			if (_stricmp(p, ".bios") == 0)

   590 				return true;

   591 			if (_stricmp(p, ".rom") == 0)

   592 				return true;

   593 		}

   594 	}

   595 

   596 	return false;

   597 }

   598 

   599 bool utilIsGBBios(const char *file)

   600 {

   601 	if (strlen(file) > 4)

   602 	{

   603 		const char *p = strrchr(file, '.');

   604 

   605 		if (p != NULL)

   606 		{

   607 			if (_stricmp(p, ".gb") == 0)

   608 				return true;

   609 			if (_stricmp(p, ".bin") == 0)

   610 				return true;

   611 			if (_stricmp(p, ".bios") == 0)

   612 				return true;

   613 			if (_stricmp(p, ".rom") == 0)

   614 				return true;

   615 		}

   616 	}

   617 

   618 	return false;

   619 }

   620 

   621 bool utilIsELF(const char *file)

   622 {

   623 	if (strlen(file) > 4)

   624 	{

   625 		const char *p = strrchr(file, '.');

   626 

   627 		if (p != NULL)

   628 		{

   629 			if (_stricmp(p, ".elf") == 0)

   630 				return true;

   631 		}

   632 	}

   633 	return false;

   634 }

   635 

   636 bool utilIsZipFile(const char *file)

   637 {

   638 	if (strlen(file) > 4)

   639 	{

   640 		const char *p = strrchr(file, '.');

   641 

   642 		if (p != NULL)

   643 		{

   644 			if (_stricmp(p, ".zip") == 0)

   645 				return true;

   646 		}

   647 	}

   648 

   649 	return false;

   650 }

   651 

   652 #if 0

   653 bool utilIsRarFile(const char *file)

   654 {

   655 	if (strlen(file) > 4)

   656 	{

   657 		char *p = strrchr(file, '.');

   658 

   659 		if (p != NULL)

   660 		{

   661 			if (_stricmp(p, ".rar") == 0)

   662 				return true;

   663 		}

   664 	}

   665 

   666 	return false;

   667 }

   668 

   669 #endif

   670 

   671 bool utilIsGzipFile(const char *file)

   672 {

   673 	if (strlen(file) > 3)

   674 	{

   675 		const char *p = strrchr(file, '.');

   676 

   677 		if (p != NULL)

   678 		{

   679 			if (_stricmp(p, ".gz") == 0)

   680 				return true;

   681 			if (_stricmp(p, ".z") == 0)

   682 				return true;

   683 		}

   684 	}

   685 

   686 	return false;

   687 }

   688 

   689 void utilGetBaseName(const char *file, char *buffer)

   690 {

   691 	strcpy(buffer, file);

   692 

   693 	if (utilIsGzipFile(file))

   694 	{

   695 		char *p = strrchr(buffer, '.');

   696 

   697 		if (p)

   698 			*p = 0;

   699 	}

   700 }

   701 

   702 IMAGE_TYPE utilFindType(const char *file)

   703 {

   704 	char buffer[2048];

   705 

   706 	if (utilIsZipFile(file))

   707 	{

   708 		unzFile unz = unzOpen(file);

   709 

   710 		if (unz == NULL)

   711 		{

   712 			systemMessage(MSG_CANNOT_OPEN_FILE, N_("Cannot open file %s"), file);

   713 			return IMAGE_UNKNOWN;

   714 		}

   715 

   716 		int r = unzGoToFirstFile(unz);

   717 

   718 		if (r != UNZ_OK)

   719 		{

   720 			unzClose(unz);

   721 			systemMessage(MSG_BAD_ZIP_FILE, N_("Bad ZIP file %s"), file);

   722 			return IMAGE_UNKNOWN;

   723 		}

   724 

   725 		IMAGE_TYPE found = IMAGE_UNKNOWN;

   726 

   727 		unz_file_info info;

   728 

   729 		while (true)

   730 		{

   731 			r = unzGetCurrentFileInfo(unz,

   732 			                          &info,

   733 			                          buffer,

   734 			                          sizeof(buffer),

   735 			                          NULL,

   736 			                          0,

   737 			                          NULL,

   738 			                          0);

   739 

   740 			if (r != UNZ_OK)

   741 			{

   742 				unzClose(unz);

   743 				systemMessage(MSG_BAD_ZIP_FILE, N_("Bad ZIP file %s"), file);

   744 				return IMAGE_UNKNOWN;

   745 			}

   746 

   747 			if (utilIsGBAImage(buffer))

   748 			{

   749 				found = IMAGE_GBA;

   750 				break;

   751 			}

   752 

   753 			if (utilIsGBImage(buffer))

   754 			{

   755 				found = IMAGE_GB;

   756 				break;

   757 			}

   758 

   759 			r = unzGoToNextFile(unz);

   760 

   761 			if (r != UNZ_OK)

   762 				break;

   763 		}

   764 		unzClose(unz);

   765 

   766 		if (found == IMAGE_UNKNOWN)

   767 		{

   768 			systemMessage(MSG_NO_IMAGE_ON_ZIP,

   769 			              N_("No image found on ZIP file %s"), file);

   770 			return found;

   771 		}

   772 		return found;

   773 #if 0

   774 	}

   775 	else if (utilIsRarFile(file))

   776 	{

   777 		IMAGE_TYPE found = IMAGE_UNKNOWN;

   778 

   779 		ArchiveList_struct *rarList = NULL;

   780 		if (urarlib_list((void *)file, (ArchiveList_struct *)&rarList))

   781 		{

   782 			ArchiveList_struct *p = rarList;

   783 

   784 			while (p)

   785 			{

   786 				if (utilIsGBAImage(p->item.Name))

   787 				{

   788 					found = IMAGE_GBA;

   789 					break;

   790 				}

   791 

   792 				if (utilIsGBImage(p->item.Name))

   793 				{

   794 					found = IMAGE_GB;

   795 					break;

   796 				}

   797 				p = p->next;

   798 			}

   799 

   800 			urarlib_freelist(rarList);

   801 		}

   802 		return found;

   803 #endif

   804 	}

   805 	else

   806 	{

   807 		if (utilIsGzipFile(file))

   808 			utilGetBaseName(file, buffer);

   809 		else

   810 			strcpy(buffer, file);

   811 

   812 		if (utilIsGBAImage(buffer))

   813 			return IMAGE_GBA;

   814 		if (utilIsGBImage(buffer))

   815 			return IMAGE_GB;

   816 	}

   817 	return IMAGE_UNKNOWN;

   818 }

   819 

   820 static int utilGetSize(int size)

   821 {

   822 	int res = 1;

   823 	while (res < size)

   824 		res <<= 1;

   825 	return res;

   826 }

   827 

   828 static u8 *utilLoadFromZip(const char *file,

   829                            bool (*accept)(const char *),

   830                            u8 *data,

   831                            int &size)

   832 {

   833 	char buffer[2048];

   834 

   835 	unzFile unz = unzOpen(file);

   836 

   837 	if (unz == NULL)

   838 	{

   839 		systemMessage(MSG_CANNOT_OPEN_FILE, N_("Cannot open file %s"), file);

   840 		return NULL;

   841 	}

   842 	int r = unzGoToFirstFile(unz);

   843 

   844 	if (r != UNZ_OK)

   845 	{

   846 		unzClose(unz);

   847 		systemMessage(MSG_BAD_ZIP_FILE, N_("Bad ZIP file %s"), file);

   848 		return NULL;

   849 	}

   850 

   851 	bool found = false;

   852 

   853 	unz_file_info info;

   854 

   855 	while (true)

   856 	{

   857 		r = unzGetCurrentFileInfo(unz,

   858 		                          &info,

   859 		                          buffer,

   860 		                          sizeof(buffer),

   861 		                          NULL,

   862 		                          0,

   863 		                          NULL,

   864 		                          0);

   865 

   866 		if (r != UNZ_OK)

   867 		{

   868 			unzClose(unz);

   869 			systemMessage(MSG_BAD_ZIP_FILE, N_("Bad ZIP file %s"), file);

   870 			return NULL;

   871 		}

   872 

   873 		if (accept(buffer))

   874 		{

   875 			found = true;

   876 			break;

   877 		}

   878 

   879 		r = unzGoToNextFile(unz);

   880 

   881 		if (r != UNZ_OK)

   882 			break;

   883 	}

   884 

   885 	if (!found)

   886 	{

   887 		unzClose(unz);

   888 		systemMessage(MSG_NO_IMAGE_ON_ZIP,

   889 		              N_("No image found on ZIP file %s"), file);

   890 		return NULL;

   891 	}

   892 

   893 	int fileSize = info.uncompressed_size;

   894 	if (size == 0)

   895 		size = fileSize;

   896 	r = unzOpenCurrentFile(unz);

   897 

   898 	if (r != UNZ_OK)

   899 	{

   900 		unzClose(unz);

   901 		systemMessage(MSG_ERROR_OPENING_IMAGE, N_("Error opening image %s"), buffer);

   902 		return NULL;

   903 	}

   904 

   905 	u8 *image = data;

   906 

   907 	if (image == NULL)

   908 	{

   909 		image = (u8 *)malloc(utilGetSize(size));

   910 		if (image == NULL)

   911 		{

   912 			unzCloseCurrentFile(unz);

   913 			unzClose(unz);

   914 			systemMessage(MSG_OUT_OF_MEMORY, N_("Failed to allocate memory for %s"),

   915 			              "data");

   916 			return NULL;

   917 		}

   918 		size = fileSize;

   919 	}

   920 	int read = fileSize <= size ? fileSize : size;

   921 	r = unzReadCurrentFile(unz,

   922 	                       image,

   923 	                       read);

   924 

   925 	unzCloseCurrentFile(unz);

   926 	unzClose(unz);

   927 

   928 	if (r != (int)read)

   929 	{

   930 		systemMessage(MSG_ERROR_READING_IMAGE,

   931 		              N_("Error reading image %s"), buffer);

   932 		if (data == NULL)

   933 			free(image);

   934 		return NULL;

   935 	}

   936 

   937 	size = fileSize;

   938 

   939 	return image;

   940 }

   941 

   942 static u8 *utilLoadGzipFile(const char *file,

   943                             bool (*accept)(const char *),

   944                             u8 *data,

   945                             int &size)

   946 {

   947 	FILE *f = fopen(file, "rb");

   948 

   949 	if (f == NULL)

   950 	{

   951 		systemMessage(MSG_ERROR_OPENING_IMAGE, N_("Error opening image %s"), file);

   952 		return NULL;

   953 	}

   954 

   955 	fseek(f, -4, SEEK_END);

   956 	int fileSize = fgetc(f) | (fgetc(f) << 8) | (fgetc(f) << 16) | (fgetc(f) << 24);

   957 	fclose(f);

   958 	if (size == 0)

   959 		size = fileSize;

   960 

   961 	gzFile gz = gzopen(file, "rb");

   962 

   963 	if (gz == NULL)

   964 	{

   965 		// should not happen, but who knows?

   966 		systemMessage(MSG_ERROR_OPENING_IMAGE, N_("Error opening image %s"), file);

   967 		return NULL;

   968 	}

   969 

   970 	u8 *image = data;

   971 

   972 	if (image == NULL)

   973 	{

   974 		image = (u8 *)malloc(utilGetSize(size));

   975 		if (image == NULL)

   976 		{

   977 			systemMessage(MSG_OUT_OF_MEMORY, N_("Failed to allocate memory for %s"),

   978 			              "data");

   979 			fclose(f);

   980 			return NULL;

   981 		}

   982 		size = fileSize;

   983 	}

   984 	int read = fileSize <= size ? fileSize : size;

   985 	int r	 = gzread(gz, image, read);

   986 	gzclose(gz);

   987 

   988 	if (r != (int)read)

   989 	{

   990 		systemMessage(MSG_ERROR_READING_IMAGE,

   991 		              N_("Error reading image %s"), file);

   992 		if (data == NULL)

   993 			free(image);

   994 		return NULL;

   995 	}

   996 

   997 	size = fileSize;

   998 

   999 	return image;

  1000 }

  1001 

  1002 #if 0

  1003 static u8 *utilLoadRarFile(const char *file,

  1004                            bool (*accept)(const char *),

  1005                            u8 *data,

  1006                            int &size)

  1007 {

  1008 	char buffer[2048];

  1009 

  1010 	ArchiveList_struct *rarList = NULL;

  1011 	if (urarlib_list((void *)file, (ArchiveList_struct *)&rarList))

  1012 	{

  1013 		ArchiveList_struct *p = rarList;

  1014 

  1015 		bool found = false;

  1016 		while (p)

  1017 		{

  1018 			if (accept(p->item.Name))

  1019 			{

  1020 				strcpy(buffer, p->item.Name);

  1021 				found = true;

  1022 				break;

  1023 			}

  1024 			p = p->next;

  1025 		}

  1026 		if (found)

  1027 		{

  1028 			void *memory		= NULL;

  1029 			unsigned long lsize = 0;

  1030 			size = p->item.UnpSize;

  1031 			int r = urarlib_get((void *)&memory, &lsize, buffer, (void *)file, "");

  1032 			if (!r)

  1033 			{

  1034 				systemMessage(MSG_ERROR_READING_IMAGE,

  1035 				              N_("Error reading image %s"), buffer);

  1036 				urarlib_freelist(rarList);

  1037 				return NULL;

  1038 			}

  1039 			u8 *image = (u8 *)memory;

  1040 			if (data != NULL)

  1041 			{

  1042 				memcpy(image, data, size);

  1043 			}

  1044 			urarlib_freelist(rarList);

  1045 			return image;

  1046 		}

  1047 		systemMessage(MSG_NO_IMAGE_ON_ZIP,

  1048 		              N_("No image found on RAR file %s"), file);

  1049 		urarlib_freelist(rarList);

  1050 		return NULL;

  1051 	}

  1052 	// nothing found

  1053 	return NULL;

  1054 }

  1055 

  1056 #endif

  1057 

  1058 // the caller is responsible for caling free(return value) to release the memory

  1059 u8 *utilLoad(const char *file,

  1060              bool (*accept)(const char *),

  1061              u8 *data,

  1062              int &size)

  1063 {

  1064 	if (utilIsZipFile(file))

  1065 	{

  1066 		return utilLoadFromZip(file, accept, data, size);

  1067 	}

  1068 	if (utilIsGzipFile(file))

  1069 	{

  1070 		return utilLoadGzipFile(file, accept, data, size);

  1071 	}

  1072 #if 0

  1073 	if (utilIsRarFile(file))

  1074 	{

  1075 		return utilLoadRarFile(file, accept, data, size);

  1076 	}

  1077 #endif

  1078 

  1079 	u8 *image = data;

  1080 

  1081 	FILE *f = fopen(file, "rb");

  1082 

  1083 	if (!f)

  1084 	{

  1085 		systemMessage(MSG_ERROR_OPENING_IMAGE, N_("Error opening image %s"), file);

  1086 		return NULL;

  1087 	}

  1088 

  1089 	fseek(f, 0, SEEK_END);

  1090 	int fileSize = ftell(f);

  1091 	fseek(f, 0, SEEK_SET);

  1092 	if (size == 0)

  1093 		size = fileSize;

  1094 

  1095 	if (image == NULL)

  1096 	{

  1097 		image = (u8 *)malloc(utilGetSize(size));

  1098 		if (image == NULL)

  1099 		{

  1100 			systemMessage(MSG_OUT_OF_MEMORY, N_("Failed to allocate memory for %s"),

  1101 			              "data");

  1102 			fclose(f);

  1103 			return NULL;

  1104 		}

  1105 		size = fileSize;

  1106 	}

  1107 	int read = fileSize <= size ? fileSize : size;

  1108 	int r	 = fread(image, 1, read, f);

  1109 	fclose(f);

  1110 

  1111 	if (r != (int)read)

  1112 	{

  1113 		systemMessage(MSG_ERROR_READING_IMAGE,

  1114 		              N_("Error reading image %s"), file);

  1115 		if (data == NULL)

  1116 			free(image);

  1117 		return NULL;

  1118 	}

  1119 

  1120 	size = fileSize;

  1121 

  1122 	return image;

  1123 }

  1124 

  1125 void utilWriteInt(gzFile gzFile, int32 i)

  1126 {

  1127 	utilGzWrite(gzFile, &i, sizeof(int32));

  1128 }

  1129 

  1130 int32 utilReadInt(gzFile gzFile)

  1131 {

  1132 	int32 i = 0;

  1133 	utilGzRead(gzFile, &i, sizeof(int32));

  1134 	return i;

  1135 }

  1136 

  1137 void utilReadData(gzFile gzFile, variable_desc *data)

  1138 {

  1139 	while (data->address)

  1140 	{

  1141 		utilGzRead(gzFile, data->address, data->size);

  1142 		data++;

  1143 	}

  1144 }

  1145 

  1146 void utilWriteData(gzFile gzFile, variable_desc *data)

  1147 {

  1148 	while (data->address)

  1149 	{

  1150 		utilGzWrite(gzFile, data->address, data->size);

  1151 		data++;

  1152 	}

  1153 }

  1154 

  1155 gzFile utilGzOpen(const char *file, const char *mode)

  1156 {

  1157 	utilGzWriteFunc = gzWrite;

  1158 	utilGzReadFunc	= gzread;

  1159 	utilGzCloseFunc = gzclose;

  1160 	utilGzSeekFunc	= gzseek;

  1161 	utilGzTellFunc	= gztell;

  1162 

  1163 	return gzopen(file, mode);

  1164 }

  1165 

  1166 gzFile utilGzReopen(int id, const char *mode)

  1167 {

  1168 	utilGzWriteFunc = gzWrite;

  1169 	utilGzReadFunc	= gzread;

  1170 	utilGzCloseFunc = gzclose;

  1171 	utilGzSeekFunc	= gzseek;

  1172 	utilGzTellFunc	= gztell;

  1173 

  1174 	return gzdopen(id, mode);

  1175 }

  1176 

  1177 gzFile utilMemGzOpen(char *memory, int available, char *mode)

  1178 {

  1179 	utilGzWriteFunc = memgzwrite;

  1180 	utilGzReadFunc	= memgzread;

  1181 	utilGzCloseFunc = memgzclose;

  1182 	utilGzSeekFunc	= NULL;	// FIXME: not implemented...

  1183 	utilGzTellFunc	= memtell;

  1184 

  1185 	return memgzopen(memory, available, mode);

  1186 }

  1187 

  1188 int utilGzWrite(gzFile file, voidp buffer, unsigned int len)

  1189 {

  1190 	return utilGzWriteFunc(file, buffer, len);

  1191 }

  1192 

  1193 int utilGzRead(gzFile file, voidp buffer, unsigned int len)

  1194 {

  1195 	return utilGzReadFunc(file, buffer, len);

  1196 }

  1197 

  1198 int utilGzClose(gzFile file)

  1199 {

  1200 	return utilGzCloseFunc(file);

  1201 }

  1202 

  1203 z_off_t utilGzSeek(gzFile file, z_off_t offset, int whence)

  1204 {

  1205 	return utilGzSeekFunc(file, offset, whence);

  1206 }

  1207 

  1208 z_off_t utilGzTell(gzFile file)

  1209 {

  1210 	return utilGzTellFunc(file);

  1211 }

  1212 

  1213 void utilGBAFindSave(const u8 *data, const int size)

  1214 {

  1215 	u32 *p		   = (u32 *)data;

  1216 	u32 *end	   = (u32 *)(data + size);

  1217 	int	 saveType  = 0;

  1218 	int	 flashSize = 0x10000;

  1219 	bool rtcFound  = false;

  1220 

  1221 	while (p  < end)

  1222 	{

  1223 		u32 d = READ32LE(p);

  1224 

  1225 		if (d == 0x52504545)

  1226 		{

  1227 			if (memcmp(p, "EEPROM_", 7) == 0)

  1228 			{

  1229 				if (saveType == 0)

  1230 					saveType = 1;

  1231 			}

  1232 		}

  1233 		else if (d == 0x4D415253)

  1234 		{

  1235 			if (memcmp(p, "SRAM_", 5) == 0)

  1236 			{

  1237 				if (saveType == 0)

  1238 					saveType = 2;

  1239 			}

  1240 		}

  1241 		else if (d == 0x53414C46)

  1242 		{

  1243 			if (memcmp(p, "FLASH1M_", 8) == 0)

  1244 			{

  1245 				if (saveType == 0)

  1246 				{

  1247 					saveType  = 3;

  1248 					flashSize = 0x20000;

  1249 				}

  1250 			}

  1251 			else if (memcmp(p, "FLASH", 5) == 0)

  1252 			{

  1253 				if (saveType == 0)

  1254 				{

  1255 					saveType  = 3;

  1256 					flashSize = 0x10000;

  1257 				}

  1258 			}

  1259 		}

  1260 		else if (d == 0x52494953)

  1261 		{

  1262 			if (memcmp(p, "SIIRTC_V", 8) == 0)

  1263 				rtcFound = true;

  1264 		}

  1265 		p++;

  1266 	}

  1267 	// if no matches found, then set it to NONE

  1268 	if (saveType == 0)

  1269 	{

  1270 		saveType = 5;

  1271 	}

  1272 	rtcEnable(rtcFound);

  1273 	cpuSaveType = saveType;

  1274 	flashSetSize(flashSize);

  1275 }

  1276 

  1277 void utilUpdateSystemColorMaps()

  1278 {

  1279 	switch (systemColorDepth)

  1280 	{

  1281 	case 16:

  1282 	{

  1283 		for (int i = 0; i < 0x10000; i++)

  1284 		{

  1285 			systemColorMap16[i] = ((i & 0x1f) << systemRedShift) |

  1286 			                      (((i & 0x3e0) >> 5) << systemGreenShift) |

  1287 			                      (((i & 0x7c00) >> 10) << systemBlueShift);

  1288 		}

  1289 		break;

  1290 	}

  1291 	case 24:

  1292 	case 32:

  1293 	{

  1294 		for (int i = 0; i < 0x10000; i++)

  1295 		{

  1296 			systemColorMap32[i] = ((i & 0x1f) << systemRedShift) |

  1297 			                      (((i & 0x3e0) >> 5) << systemGreenShift) |

  1298 			                      (((i & 0x7c00) >> 10) << systemBlueShift);

  1299 		}

  1300 		break;

  1301 	}

  1302 	}

  1303 }

  1304 

  1305 //// BIOS stuff

  1306 // systemType uses the same enum values as gbEmulatorType does

  1307 

  1308 bool utilLoadBIOS(u8 *bios, const char *biosFileName, int systemType)

  1309 {

  1310 	if (bios == NULL || strlen(biosFileName) == 0)

  1311 		return false;

  1312 

  1313 	if (systemType == 4)

  1314 	{

  1315 		int biosSize = 0x4000;

  1316 		if (utilLoad(biosFileName, utilIsGBABios, bios, biosSize))

  1317 		{

  1318 			if (biosSize == 0x4000)

  1319 				return true;

  1320 		}

  1321 	}

  1322 	else

  1323 	{

  1324 		int biosSize = 0x100;

  1325 		if (utilLoad(biosFileName, utilIsGBBios, bios, biosSize))

  1326 		{

  1327 			if (biosSize == 0x100)

  1328 				return true;

  1329 		}

  1330 	}

  1331 

  1332 	return false;

  1333 }

  1334 

  1335 bool utilCheckBIOS(const char *biosFileName, int systemType)

  1336 {

  1337 	if (strlen(biosFileName) == 0)

  1338 		return false;

  1339 

  1340 	u8 * tempBIOS = (u8 *)malloc(systemType == 4 ? 0x4000 : 0x100);

  1341 	bool result	  = utilLoadBIOS(tempBIOS, biosFileName, systemType);

  1342 	free(tempBIOS);

  1343 

  1344 	return result;

  1345 }

  1346 

  1347 #if 0

  1348 // returns the checksum of the BIOS that will be loaded after the next restart

  1349 u16 utilCalcBIOSChecksum(const u8 *bios, int systemType)

  1350 {

  1351 	u32	biosChecksum = 0;

  1352 	if (bios)

  1353 	{

  1354 		int biosSize	= (systemType == 4 ? 0x4000 : 0x100);

  1355 		const u16 *data = reinterpret_cast<const u16 *>(bios);

  1356 		for (int i = biosSize; i > 0; i -= 2)

  1357 			biosChecksum += *data++;

  1358 	}

  1359 

  1360 	while ((biosChecksum >> 16) & 0xFFFF)

  1361 		biosChecksum = (biosChecksum &0xFFFF) + ((biosChecksum >> 16) & 0xFFFF);

  1362 

  1363 	return biosChecksum & 0xFFFF;

  1364 }

  1365 #else

  1366 // returns the checksum of the BIOS that will be loaded after the next restart

  1367 u16 utilCalcBIOSChecksum(const u8 *bios, int systemType)

  1368 {

  1369 	u32	biosChecksum = 0;

  1370 	if (bios)

  1371 	{

  1372 		int biosSize	= (systemType == 4 ? 0x4000 : 0x100);

  1373 		const u32 *data = reinterpret_cast<const u32 *>(bios);

  1374 		for (int i = biosSize; i > 0; i -= 4)

  1375 			biosChecksum += *data++;

  1376 	}

  1377 

  1378 	return biosChecksum & 0xFFFF;

  1379 }

  1380 #endif

  1381 

  1382 // returns the checksum of the BIOS file

  1383 u16 utilCalcBIOSFileChecksum(const char *biosFileName, int systemType)

  1384 {

  1385 	if (strlen(biosFileName) == 0)

  1386 		return 0;

  1387 

  1388 	u16		  biosChecksum = 0;

  1389 	const int biosSize	   = (systemType == 4 ? 0x4000 : 0x100);

  1390 	u8 *	  tempBIOS	   = (u8 *)malloc(biosSize);

  1391 	bool	  hasBIOS	   = utilLoadBIOS(tempBIOS, biosFileName, systemType);

  1392 	if (hasBIOS)

  1393 	{

  1394 		biosChecksum = utilCalcBIOSChecksum(tempBIOS, systemType);

  1395 	}

  1396 	free(tempBIOS);

  1397 

  1398 	return biosChecksum;

  1399 }

  1400
author	Robert McIntyre <rlm@mit.edu>
date	Thu, 21 Mar 2013 19:06:58 +0000
parents	f94fa48624d0
children