visualboyadvance-m/src/Util.cpp

911 lines
28 KiB
C++

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <string>
#ifndef _WIN32
#include <sys/stat.h>
#include <unistd.h>
#else // _WIN32
#include <direct.h>
#include <io.h>
#endif // _WIN32
#include <zlib.h>
#define STB_IMAGE_IMPLEMENTATION
extern "C" {
#include "stb_image.h"
}
#define STBI_MSC_SECURE_CRT
#define STB_IMAGE_WRITE_IMPLEMENTATION
extern "C" {
#include "stb_image_write.h"
}
#include "NLS.h"
#include "System.h"
#include "Util.h"
#include "common/Port.h"
#include "gba/Flash.h"
#include "gba/GBA.h"
#include "gba/Globals.h"
#include "gba/RTC.h"
#include "fex/fex.h"
extern "C" {
#include "common/memgzio.h"
}
#include "gb/gbGlobals.h"
#include "gba/gbafilter.h"
#ifndef _MSC_VER
#define _stricmp strcasecmp
#endif // ! _MSC_VER
extern int systemColorDepth;
extern int systemRedShift;
extern int systemGreenShift;
extern int systemBlueShift;
extern uint16_t systemColorMap16[0x10000];
extern uint32_t systemColorMap32[0x10000];
static int(ZEXPORT *utilGzWriteFunc)(gzFile, const voidp, unsigned int) = NULL;
static int(ZEXPORT *utilGzReadFunc)(gzFile, voidp, unsigned int) = NULL;
static int(ZEXPORT *utilGzCloseFunc)(gzFile) = NULL;
static z_off_t(ZEXPORT *utilGzSeekFunc)(gzFile, z_off_t, int) = NULL;
#define MAX_CART_SIZE 0x8000000 // 128MB
bool FileExists(const char *filename)
{
#ifdef _WIN32
return (_access(filename, 0) != -1);
#else
struct stat buffer;
return (stat(filename, &buffer) == 0);
#endif
}
#ifdef _WIN32
#include <windows.h>
wchar_t* utf8ToUtf16(const char *utf8)
{
wchar_t *utf16 = nullptr;
size_t size = MultiByteToWideChar(CP_UTF8, 0, utf8, -1, NULL , 0);
if (size == 0) return nullptr; // error
utf16 = new wchar_t[size];
size = MultiByteToWideChar(CP_UTF8, 0, utf8 , -1, utf16, size);
if (size == 0) {
delete[] utf16;
return nullptr; // error
}
return utf16;
}
#endif // _WIN32
FILE* utilOpenFile(const char *filename, const char *mode)
{
FILE *f = NULL;
#ifdef _WIN32
wchar_t *wfilename = utf8ToUtf16(filename);
if (!wfilename) return nullptr;
wchar_t *wmode = utf8ToUtf16(mode);
if (!wmode) {
delete[] wfilename;
return nullptr;
}
f = _wfopen(wfilename, wmode);
delete[] wfilename;
delete[] wmode;
#else
f = fopen(filename, mode);
#endif // _WIN32
return f;
}
// Get user-specific config dir manually.
// apple: ~/Library/Application Support/
// windows: %APPDATA%/
// unix: ${XDG_CONFIG_HOME:-~/.config}/
std::string get_xdg_user_config_home()
{
std::string path;
#ifdef __APPLE__
std::string home(getenv("HOME"));
path = home + "/Library/Application Support";
#elif _WIN32
char *app_data_env = getenv("LOCALAPPDATA");
if (!app_data_env) app_data_env = getenv("APPDATA");
std::string app_data(app_data_env);
path = app_data;
#else // Unix
char *xdg_var = getenv("XDG_CONFIG_HOME");
if (!xdg_var || !*xdg_var)
{
std::string xdg_default(getenv("HOME"));
path = xdg_default + "/.config";
}
else
{
path = xdg_var;
}
#endif
return path + FILE_SEP;
}
// Get user-specific data dir manually.
// apple: ~/Library/Application Support/
// windows: %APPDATA%/
// unix: ${XDG_DATA_HOME:-~/.local/share}/
std::string get_xdg_user_data_home()
{
std::string path;
#ifdef __APPLE__
std::string home(getenv("HOME"));
path = home + "/Library/Application Support";
#elif _WIN32
char *app_data_env = getenv("LOCALAPPDATA");
if (!app_data_env) app_data_env = getenv("APPDATA");
std::string app_data(app_data_env);
path = app_data;
#else // Unix
char *xdg_var = getenv("XDG_DATA_HOME");
if (!xdg_var || !*xdg_var)
{
std::string xdg_default(getenv("HOME"));
path = xdg_default + "/.local/share";
}
else
{
path = xdg_var;
}
#endif
return path + FILE_SEP;
}
void utilReadScreenPixels(uint8_t *dest, int w, int h)
{
uint8_t *b = dest;
int sizeX = w;
int sizeY = h;
switch (systemColorDepth) {
case 16: {
uint16_t *p = (uint16_t *)(pix + (w + 2) * 2); // skip first black line
for (int y = 0; y < sizeY; y++) {
for (int x = 0; x < sizeX; x++) {
uint16_t v = *p++;
*b++ = ((v >> systemRedShift) & 0x001f) << 3; // R
*b++ = ((v >> systemGreenShift) & 0x001f) << 3; // G
*b++ = ((v >> systemBlueShift) & 0x01f) << 3; // B
}
p++; // skip black pixel for filters
p++; // skip black pixel for filters
}
} break;
case 24: {
uint8_t *pixU8 = (uint8_t *)pix;
for (int y = 0; y < sizeY; y++) {
for (int x = 0; x < sizeX; x++) {
if (systemRedShift < systemBlueShift) {
*b++ = *pixU8++; // R
*b++ = *pixU8++; // G
*b++ = *pixU8++; // B
} else {
int blue = *pixU8++;
int green = *pixU8++;
int red = *pixU8++;
*b++ = red;
*b++ = green;
*b++ = blue;
}
}
}
} break;
case 32: {
uint32_t *pixU32 = (uint32_t *)(pix + 4 * (w + 1));
for (int y = 0; y < sizeY; y++) {
for (int x = 0; x < sizeX; x++) {
uint32_t v = *pixU32++;
*b++ = ((v >> systemBlueShift) & 0x001f) << 3; // B
*b++ = ((v >> systemGreenShift) & 0x001f) << 3; // G
*b++ = ((v >> systemRedShift) & 0x001f) << 3; // R
}
pixU32++;
}
} break;
}
}
#define CHANNEL_NUM 3 // RGB
bool utilWritePNGFile(const char *fileName, int w, int h, uint8_t *pix)
{
uint8_t *writeBuffer = new uint8_t[w * h * CHANNEL_NUM];
uint8_t *b = writeBuffer;
int sizeX = w;
int sizeY = h;
switch (systemColorDepth)
{
case 16: {
uint16_t *p = (uint16_t *)(pix + (w + 2) * 2); // skip first black line
for (int y = 0; y < sizeY; y++) {
for (int x = 0; x < sizeX; x++) {
uint16_t v = *p++;
*b++ = ((v >> systemRedShift) & 0x001f) << 3; // R
*b++ = ((v >> systemGreenShift) & 0x001f) << 3; // G
*b++ = ((v >> systemBlueShift) & 0x01f) << 3; // B
}
p++; // skip black pixel for filters
p++; // skip black pixel for filters
}
} break;
case 24: {
uint8_t *pixU8 = (uint8_t *)pix;
for (int y = 0; y < sizeY; y++) {
for (int x = 0; x < sizeX; x++) {
if (systemRedShift < systemBlueShift) {
*b++ = *pixU8++; // R
*b++ = *pixU8++; // G
*b++ = *pixU8++; // B
} else {
int blue = *pixU8++;
int green = *pixU8++;
int red = *pixU8++;
*b++ = red;
*b++ = green;
*b++ = blue;
}
}
}
} break;
case 32: {
uint32_t *pixU32 = (uint32_t *)(pix + 4 * (w + 1));
for (int y = 0; y < sizeY; y++) {
for (int x = 0; x < sizeX; x++) {
uint32_t v = *pixU32++;
*b++ = ((v >> systemRedShift) & 0x001f) << 3; // R
*b++ = ((v >> systemGreenShift) & 0x001f) << 3; // G
*b++ = ((v >> systemBlueShift) & 0x001f) << 3; // B
}
pixU32++;
}
} break;
}
bool ret = (0 != stbi_write_png(fileName, w, h, CHANNEL_NUM, writeBuffer, w * CHANNEL_NUM));
delete[] writeBuffer;
return ret;
}
void utilPutDword(uint8_t *p, uint32_t value)
{
*p++ = value & 255;
*p++ = (value >> 8) & 255;
*p++ = (value >> 16) & 255;
*p = (value >> 24) & 255;
}
void utilPutWord(uint8_t *p, uint16_t value)
{
*p++ = value & 255;
*p = (value >> 8) & 255;
}
#ifndef __LIBRETRO__
bool utilWriteBMPFile(const char *fileName, int w, int h, uint8_t *pix)
{
uint8_t writeBuffer[512 * 3];
FILE *fp = fopen(fileName, "wb");
if (!fp) {
systemMessage(MSG_ERROR_CREATING_FILE, N_("Error creating file %s"), fileName);
return false;
}
struct {
uint8_t ident[2];
uint8_t filesize[4];
uint8_t reserved[4];
uint8_t dataoffset[4];
uint8_t headersize[4];
uint8_t width[4];
uint8_t height[4];
uint8_t planes[2];
uint8_t bitsperpixel[2];
uint8_t compression[4];
uint8_t datasize[4];
uint8_t hres[4];
uint8_t vres[4];
uint8_t colors[4];
uint8_t importantcolors[4];
// uint8_t pad[2];
} bmpheader;
memset(&bmpheader, 0, sizeof(bmpheader));
bmpheader.ident[0] = 'B';
bmpheader.ident[1] = 'M';
uint32_t fsz = sizeof(bmpheader) + w * h * 3;
utilPutDword(bmpheader.filesize, fsz);
utilPutDword(bmpheader.dataoffset, 0x36);
utilPutDword(bmpheader.headersize, 0x28);
utilPutDword(bmpheader.width, w);
utilPutDword(bmpheader.height, h);
utilPutDword(bmpheader.planes, 1);
utilPutDword(bmpheader.bitsperpixel, 24);
utilPutDword(bmpheader.datasize, 3 * w * h);
fwrite(&bmpheader, 1, sizeof(bmpheader), fp);
uint8_t *b = writeBuffer;
int sizeX = w;
int sizeY = h;
switch (systemColorDepth) {
case 16: {
uint16_t *p = (uint16_t *)(pix + (w + 2) * (h)*2); // skip first black line
for (int y = 0; y < sizeY; y++) {
for (int x = 0; x < sizeX; x++) {
uint16_t v = *p++;
*b++ = ((v >> systemBlueShift) & 0x01f) << 3; // B
*b++ = ((v >> systemGreenShift) & 0x001f) << 3; // G
*b++ = ((v >> systemRedShift) & 0x001f) << 3; // R
}
p++; // skip black pixel for filters
p++; // skip black pixel for filters
p -= 2 * (w + 2);
fwrite(writeBuffer, 1, 3 * w, fp);
b = writeBuffer;
}
} break;
case 24: {
uint8_t *pixU8 = (uint8_t *)pix + 3 * w * (h - 1);
for (int y = 0; y < sizeY; y++) {
for (int x = 0; x < sizeX; x++) {
if (systemRedShift > systemBlueShift) {
*b++ = *pixU8++; // B
*b++ = *pixU8++; // G
*b++ = *pixU8++; // R
} else {
int red = *pixU8++;
int green = *pixU8++;
int blue = *pixU8++;
*b++ = blue;
*b++ = green;
*b++ = red;
}
}
pixU8 -= 2 * 3 * w;
fwrite(writeBuffer, 1, 3 * w, fp);
b = writeBuffer;
}
} break;
case 32: {
uint32_t *pixU32 = (uint32_t *)(pix + 4 * (w + 1) * (h));
for (int y = 0; y < sizeY; y++) {
for (int x = 0; x < sizeX; x++) {
uint32_t v = *pixU32++;
*b++ = ((v >> systemBlueShift) & 0x001f) << 3; // B
*b++ = ((v >> systemGreenShift) & 0x001f) << 3; // G
*b++ = ((v >> systemRedShift) & 0x001f) << 3; // R
}
pixU32++;
pixU32 -= 2 * (w + 1);
fwrite(writeBuffer, 1, 3 * w, fp);
b = writeBuffer;
}
} break;
}
fclose(fp);
return true;
}
#endif /* !__LIBRETRO__ */
bool utilIsGBAImage(const char *file)
{
coreOptions.cpuIsMultiBoot = false;
if (strlen(file) > 4) {
const char *p = strrchr(file, '.');
if (p != NULL) {
if ((_stricmp(p, ".agb") == 0) || (_stricmp(p, ".gba") == 0) ||
(_stricmp(p, ".bin") == 0) || (_stricmp(p, ".elf") == 0))
return true;
if (_stricmp(p, ".mb") == 0) {
coreOptions.cpuIsMultiBoot = true;
return true;
}
}
}
return false;
}
bool utilIsGBImage(const char *file)
{
if (strlen(file) > 4) {
const char *p = strrchr(file, '.');
if (p != NULL) {
if ((_stricmp(p, ".dmg") == 0) || (_stricmp(p, ".gb") == 0) ||
(_stricmp(p, ".gbc") == 0) || (_stricmp(p, ".cgb") == 0) ||
(_stricmp(p, ".sgb") == 0))
return true;
}
}
return false;
}
bool utilIsGzipFile(const char *file)
{
if (strlen(file) > 3) {
const char *p = strrchr(file, '.');
if (p != NULL) {
if (_stricmp(p, ".gz") == 0)
return true;
if (_stricmp(p, ".z") == 0)
return true;
}
}
return false;
}
// strip .gz or .z off end
void utilStripDoubleExtension(const char *file, char *buffer)
{
if (buffer != file) // allows conversion in place
strcpy(buffer, file);
if (utilIsGzipFile(file)) {
char *p = strrchr(buffer, '.');
if (p)
*p = 0;
}
}
// Opens and scans archive using accept(). Returns fex_t if found.
// If error or not found, displays message and returns NULL.
static fex_t *scan_arc(const char *file, bool (*accept)(const char *), char (&buffer)[2048])
{
fex_t *fe;
fex_err_t err = fex_open(&fe, file);
if (!fe) {
systemMessage(MSG_CANNOT_OPEN_FILE, N_("Cannot open file %s: %s"), file, err);
return NULL;
}
// Scan filenames
bool found = false;
while (!fex_done(fe)) {
strncpy(buffer, fex_name(fe), sizeof buffer);
buffer[sizeof buffer - 1] = '\0';
utilStripDoubleExtension(buffer, buffer);
if (accept(buffer)) {
found = true;
break;
}
fex_err_t err = fex_next(fe);
if (err) {
systemMessage(MSG_BAD_ZIP_FILE,
N_("Cannot read archive %s: %s"),
file,
err);
fex_close(fe);
return NULL;
}
}
if (!found) {
systemMessage(MSG_NO_IMAGE_ON_ZIP, N_("No image found in file %s"), file);
fex_close(fe);
return NULL;
}
return fe;
}
static bool utilIsImage(const char *file)
{
return utilIsGBAImage(file) || utilIsGBImage(file);
}
IMAGE_TYPE utilFindType(const char *file, char (&buffer)[2048]);
IMAGE_TYPE utilFindType(const char *file)
{
char buffer[2048];
return utilFindType(file, buffer);
}
IMAGE_TYPE utilFindType(const char *file, char (&buffer)[2048])
{
#ifdef WIN32
DWORD dwNum = MultiByteToWideChar(CP_ACP, 0, file, -1, NULL, 0);
wchar_t *pwText;
pwText = new wchar_t[dwNum];
if (!pwText) {
return IMAGE_UNKNOWN;
}
MultiByteToWideChar(CP_ACP, 0, file, -1, pwText, dwNum);
//char *file_conv = fex_wide_to_path(file);
char *file_conv = (char *)file;
// if ( !utilIsImage( file_conv ) ) // TODO: utilIsArchive() instead?
// {
fex_t *fe = scan_arc(file_conv, utilIsImage, buffer);
if (!fe)
return IMAGE_UNKNOWN;
fex_close(fe);
file = buffer;
// }
//free(file_conv);
#else
// if ( !utilIsImage( file ) ) // TODO: utilIsArchive() instead?
// {
fex_t *fe = scan_arc(file, utilIsImage, buffer);
if (!fe)
return IMAGE_UNKNOWN;
fex_close(fe);
file = buffer;
// }
#endif
return utilIsGBAImage(file) ? IMAGE_GBA : IMAGE_GB;
}
static int utilGetSize(int size)
{
int res = 1;
while (res < size)
res <<= 1;
return res;
}
uint8_t *utilLoad(const char *file, bool (*accept)(const char *), uint8_t *data, int &size)
{
// find image file
char buffer[2048];
#ifdef WIN32
DWORD dwNum = MultiByteToWideChar(CP_ACP, 0, file, -1, NULL, 0);
wchar_t *pwText;
pwText = new wchar_t[dwNum];
if (!pwText) {
return NULL;
}
MultiByteToWideChar(CP_ACP, 0, file, -1, pwText, dwNum);
//char *file_conv = fex_wide_to_path(file);
char *file_conv = (char *)file;
delete[] pwText;
fex_t *fe = scan_arc(file_conv, accept, buffer);
if (!fe)
return NULL;
//free(file_conv);
#else
fex_t *fe = scan_arc(file, accept, buffer);
if (!fe)
return NULL;
#endif
// Allocate space for image
fex_err_t err = fex_stat(fe);
int fileSize = fex_size(fe);
if (size == 0)
size = fileSize;
if (size > MAX_CART_SIZE)
return NULL;
uint8_t *image = data;
if (image == NULL) {
// allocate buffer memory if none was passed to the function
image = (uint8_t *)malloc(utilGetSize(size));
if (image == NULL) {
fex_close(fe);
systemMessage(MSG_OUT_OF_MEMORY,
N_("Failed to allocate memory for %s"),
"data");
return NULL;
}
size = fileSize;
}
// Read image
int read = fileSize <= size ? fileSize : size; // do not read beyond file
err = fex_read(fe, image, read);
fex_close(fe);
if (err) {
systemMessage(MSG_ERROR_READING_IMAGE,
N_("Error reading image from %s: %s"),
buffer,
err);
if (data == NULL)
free(image);
return NULL;
}
size = fileSize;
return image;
}
void replaceAll(std::string &str, const std::string &from, const std::string &to)
{
if (from.empty())
return;
size_t start_pos = 0;
while ((start_pos = str.find(from, start_pos)) != std::string::npos) {
str.replace(start_pos, from.length(), to);
start_pos += to.length(); // In case 'to' contains 'from', like replacing 'x' with
// 'yx'
}
}
void utilExtract(const char *filepath, const char *filename)
{
fex_t *fex;
std::string archive_name(filepath);
archive_name.append(filename);
fex_open(&fex, archive_name.c_str());
while (!fex_done(fex)) {
std::string extracted_filename(filepath);
extracted_filename.append(fex_name(fex));
#ifdef WIN32
replaceAll(extracted_filename, "/", "\\");
#endif
std::string new_dir(filepath);
new_dir.append(fex_name(fex));
#ifdef WIN32
replaceAll(new_dir, "/", "\\");
#endif
new_dir = new_dir.substr(0, new_dir.find_last_of("\\"));
if (!FileExists(new_dir.c_str()))
mkdir(new_dir.c_str()
#ifndef WIN32
,
0777
#endif
);
if (FileExists(extracted_filename.c_str())) {
std::string new_name(filepath);
new_name.append("old-");
new_name.append(fex_name(fex));
#ifdef WIN32
replaceAll(new_name, "/", "\\");
#endif
remove(new_name.c_str());
rename(extracted_filename.c_str(), new_name.c_str());
}
FILE *extracted_file = fopen(extracted_filename.c_str(), "wb");
const void *p;
fex_data(fex, &p);
fwrite(p, fex_size(fex), 1, extracted_file);
fclose(extracted_file);
fex_next(fex);
}
fex_close(fex);
}
void utilWriteInt(gzFile gzFile, int i)
{
utilGzWrite(gzFile, &i, sizeof(int));
}
int utilReadInt(gzFile gzFile)
{
int i = 0;
utilGzRead(gzFile, &i, sizeof(int));
return i;
}
void utilReadData(gzFile gzFile, variable_desc *data)
{
while (data->address) {
utilGzRead(gzFile, data->address, data->size);
data++;
}
}
void utilReadDataSkip(gzFile gzFile, variable_desc *data)
{
while (data->address) {
utilGzSeek(gzFile, data->size, SEEK_CUR);
data++;
}
}
void utilWriteData(gzFile gzFile, variable_desc *data)
{
while (data->address) {
utilGzWrite(gzFile, data->address, data->size);
data++;
}
}
gzFile utilAutoGzOpen(const char *file, const char *mode)
{
#ifdef _WIN32
wchar_t *wfile = utf8ToUtf16(file);
if (!wfile) return nullptr;
gzFile handler = gzopen_w(wfile, mode);
delete[] wfile;
return handler;
#else
return gzopen(file, mode);
#endif
}
gzFile utilGzOpen(const char *file, const char *mode)
{
utilGzWriteFunc = (int(ZEXPORT *)(gzFile, void *const, unsigned int))gzwrite;
utilGzReadFunc = gzread;
utilGzCloseFunc = gzclose;
utilGzSeekFunc = gzseek;
return utilAutoGzOpen(file, mode);
}
gzFile utilMemGzOpen(char *memory, int available, const char *mode)
{
utilGzWriteFunc = memgzwrite;
utilGzReadFunc = memgzread;
utilGzCloseFunc = memgzclose;
utilGzSeekFunc = memgzseek;
return memgzopen(memory, available, mode);
}
int utilGzWrite(gzFile file, const voidp buffer, unsigned int len)
{
return utilGzWriteFunc(file, buffer, len);
}
int utilGzRead(gzFile file, voidp buffer, unsigned int len)
{
return utilGzReadFunc(file, buffer, len);
}
int utilGzClose(gzFile file)
{
return utilGzCloseFunc(file);
}
z_off_t utilGzSeek(gzFile file, z_off_t offset, int whence)
{
return utilGzSeekFunc(file, offset, whence);
}
long utilGzMemTell(gzFile file)
{
return memtell(file);
}
void utilGBAFindSave(const int size)
{
uint32_t *p = (uint32_t *)&rom[0];
uint32_t *end = (uint32_t *)(&rom[0] + size);
int detectedSaveType = 0;
int flashSize = 0x10000;
bool rtcFound = false;
while (p < end) {
uint32_t d = READ32LE(p);
if (d == 0x52504545) {
if (memcmp(p, "EEPROM_", 7) == 0) {
if (detectedSaveType == 0 || detectedSaveType == 4)
detectedSaveType = 1;
}
} else if (d == 0x4D415253) {
if (memcmp(p, "SRAM_", 5) == 0) {
if (detectedSaveType == 0 || detectedSaveType == 1 ||
detectedSaveType == 4)
detectedSaveType = 2;
}
} else if (d == 0x53414C46) {
if (memcmp(p, "FLASH1M_", 8) == 0) {
if (detectedSaveType == 0) {
detectedSaveType = 3;
flashSize = 0x20000;
}
} else if (memcmp(p, "FLASH512_", 9) == 0) {
if (detectedSaveType == 0) {
detectedSaveType = 3;
flashSize = 0x10000;
}
} else if (memcmp(p, "FLASH", 5) == 0) {
if (detectedSaveType == 0) {
detectedSaveType = 4;
flashSize = 0x10000;
}
}
} else if (d == 0x52494953) {
if (memcmp(p, "SIIRTC_V", 8) == 0)
rtcFound = true;
}
p++;
}
// if no matches found, then set it to NONE
if (detectedSaveType == 0) {
detectedSaveType = 5;
}
if (detectedSaveType == 4) {
detectedSaveType = 3;
}
rtcEnable(rtcFound);
rtcEnableRumble(!rtcFound);
coreOptions.saveType = detectedSaveType;
flashSetSize(flashSize);
}
void utilUpdateSystemColorMaps(bool lcd)
{
switch (systemColorDepth) {
case 16: {
for (int i = 0; i < 0x10000; i++) {
systemColorMap16[i] = ((i & 0x1f) << systemRedShift) |
(((i & 0x3e0) >> 5) << systemGreenShift) |
(((i & 0x7c00) >> 10) << systemBlueShift);
}
if (lcd)
gbafilter_pal(systemColorMap16, 0x10000);
} break;
case 24:
case 32: {
for (int i = 0; i < 0x10000; i++) {
systemColorMap32[i] = ((i & 0x1f) << systemRedShift) |
(((i & 0x3e0) >> 5) << systemGreenShift) |
(((i & 0x7c00) >> 10) << systemBlueShift);
}
if (lcd)
gbafilter_pal32(systemColorMap32, 0x10000);
} break;
}
}
// Check for existence of file.
bool utilFileExists(const char *filename)
{
FILE *f = fopen(filename, "r");
if (f == NULL) {
return false;
} else {
fclose(f);
return true;
}
}