/**
* detectFormat_fopen(): Detect the format of a given ROM file.
* @param filename Filename of the ROM file.
* @return ROMType.
*/
ROMType ROM::detectFormat_fopen(const char* filename)
{
Compressor *cmp;
list<CompressedFile> *files;
ROMType rtype;
// Open the ROM file using the compressor functions.
cmp = new Compressor(filename);
if (!cmp->isFileLoaded())
{
// Cannot load the file.
delete cmp;
return (ROMType)0;
}
// Get the file information.
files = cmp->getFileInfo();
// Check how many files are available.
if (!files || files->empty())
{
// No files.
delete files;
delete cmp;
return (ROMType)0;
}
// Get the first file in the archive.
// TODO: Store the compressed filename in ROM history.
unsigned char detectBuf[2048];
cmp->getFile(&(*files->begin()), detectBuf, sizeof(detectBuf));
rtype = detectFormat(detectBuf);
// Return the ROM type.
delete files;
delete cmp;
return rtype;
}
/**
* loadROM(): Load a ROM file.
* @param filename Filename of the ROM file.
* @param interleaved If non-zero, the ROM is interleaved.
* @return Pointer to Rom struct with the ROM information.
*/
ROMType ROM::loadROM(const char* filename, ROM_t** retROM)
{
Compressor *cmp;
list<CompressedFile> *files;
CompressedFile* selFile;
ROMType rtype;
// Set up the compressor.
cmp = new Compressor(filename, true);
if (!cmp->isFileLoaded())
{
// Error loading the file.
delete cmp;
Game = NULL;
*retROM = NULL;
return (ROMType)0;
}
// Get the file information.
files = cmp->getFileInfo();
// Check how many files are available.
if (!files || files->empty())
{
// No files in the archive.
// TODO: For 7z, suggest setting the 7z binary filename.
GensUI::msgBox("No files were detected in this archive.", "No Files Detected");
if (files)
delete files;
if (cmp)
delete cmp;
files = NULL;
cmp = NULL;
Game = NULL;
*retROM = NULL;
return (ROMType)0;
}
else if (files->size() == 1)
{
// One file is in the archive. Load it.
selFile = &(*files->begin());
}
else
{
#if !defined(GENS_UI_OPENEMU)
// More than one file is in the archive. Load it.
// TODO: Improve this!
#if defined(GENS_UI_GTK)
ZipSelectDialog *zip = new ZipSelectDialog(GTK_WINDOW(gens_window));
#elif defined(GENS_UI_WIN32)
ZipSelectDialog *zip = new ZipSelectDialog(Gens_hWnd);
#else
#error Can't determine UI.
#endif
selFile = zip->getFile(files);
delete zip;
#endif
}
if (!selFile)
{
// No file was selected and/or Cancel was clicked.
delete files;
delete cmp;
Game = NULL;
*retROM = NULL;
return (ROMType)0;
}
// Determine the ROM type.
unsigned char detectBuf[2048];
cmp->getFile(&(*selFile), detectBuf, sizeof(detectBuf));
rtype = detectFormat(detectBuf);
if (rtype < MD_ROM ||
rtype >= SegaCD_Image)
{
// Unknown ROM type, or this is a SegaCD image.
delete files;
delete cmp;
Game = NULL;
*retROM = NULL;
return rtype;
}
// If the ROM is larger than 6MB (+512 bytes for SMD interleaving), don't load it.
if (selFile->filesize > ((6 * 1024 * 1024) + 512))
{
GensUI::msgBox("ROM files larger than 6 MB are not supported.", "ROM File Error");
delete files;
delete cmp;
Game = NULL;
*retROM = NULL;
return (ROMType)0;
}
myROM = (ROM_t*)malloc(sizeof(ROM_t));
if (!myROM)
{
// Memory allocation error
delete files;
delete cmp;
Game = NULL;
*retROM = NULL;
return (ROMType)0;
}
//fseek(ROM_File, 0, SEEK_SET);
// Clear the ROM buffer and load the ROM.
memset(Rom_Data, 0, 6 * 1024 * 1024);
int loadedSize = cmp->getFile(&(*selFile), Rom_Data, selFile->filesize);
if (loadedSize != selFile->filesize)
{
// Incorrect filesize.
GensUI::msgBox("Error loading the ROM file.", "ROM File Error");
free(myROM);
delete files;
delete cmp;
myROM = NULL;
Game = NULL;
*retROM = NULL;
return (ROMType)0;
}
//fclose(ROM_File);
updateROMName(filename);
Rom_Size = selFile->filesize;
// Delete the compression objects.
delete files;
delete cmp;
// Deinterleave the ROM, if necessary.
if (rtype == MD_ROM_Interleaved ||
rtype == _32X_ROM_Interleaved)
deinterleaveSMD();
fillROMInfo();
*retROM = myROM;
return rtype;
}