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support for zipped ISOs

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git-svn-id: file:///home/notaz/opt/svn/PicoDrive@65 be3aeb3a-fb24-0410-a615-afba39da0efa
This commit is contained in:
notaz 2007-03-10 23:50:03 +00:00
parent b67ef287e7
commit 83bd0b76ab
17 changed files with 413 additions and 156 deletions
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48
platform/gp2x/emu.c
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@ -169,31 +169,31 @@ int find_bios(int region, char **bios_file)
/* checks if romFileName points to valid MegaCD image
* if so, checks for suitable BIOS */
static int cd_check(char *ext, char **bios_file)
static int cd_check(char **bios_file)
{
unsigned char buf[32];
FILE *cd_f;
pm_file *cd_f;
int type = 0, region = 4; // 1: Japan, 4: US, 8: Europe
cd_f = fopen(romFileName, "rb");
cd_f = pm_open(romFileName);
if (!cd_f) return 0; // let the upper level handle this
if (fread(buf, 1, 32, cd_f) != 32) {
fclose(cd_f);
if (pm_read(buf, 32, cd_f) != 32) {
pm_close(cd_f);
return 0;
}
if (!strncasecmp("SEGADISCSYSTEM", (char *)buf+0x00, 14)) type = 1; // Sega CD (ISO)
if (!strncasecmp("SEGADISCSYSTEM", (char *)buf+0x10, 14)) type = 2; // Sega CD (BIN)
if (type == 0) {
fclose(cd_f);
pm_close(cd_f);
return 0;
}
/* it seems we have a CD image here. Try to detect region and load a suitable BIOS now.. */
fseek(cd_f, (type == 1) ? 0x100+0x10B : 0x110+0x10B, SEEK_SET);
fread(buf, 1, 1, cd_f);
fclose(cd_f);
pm_seek(cd_f, (type == 1) ? 0x100+0x10B : 0x110+0x10B, SEEK_SET);
pm_read(buf, 1, cd_f);
pm_close(cd_f);
if (buf[0] == 0x64) region = 8; // EU
if (buf[0] == 0xa1) region = 1; // JAP
@ -217,7 +217,7 @@ int emu_ReloadRom(void)
unsigned int rom_size = 0;
char *used_rom_name = romFileName;
char ext[5];
FILE *rom;
pm_file *rom;
int ret, cd_state;
printf("emu_ReloadRom(%s)\n", romFileName);
@ -284,7 +284,7 @@ int emu_ReloadRom(void)
}
// check for MegaCD image
cd_state = cd_check(ext, &used_rom_name);
cd_state = cd_check(&used_rom_name);
if (cd_state > 0) {
PicoMCD |= 1;
get_ext(used_rom_name, ext);
@ -296,7 +296,7 @@ int emu_ReloadRom(void)
PicoMCD &= ~1;
}
rom = fopen(used_rom_name, "rb");
rom = pm_open(used_rom_name);
if(!rom) {
sprintf(menuErrorMsg, "Failed to open rom.");
return 0;
@ -308,25 +308,13 @@ int emu_ReloadRom(void)
rom_size = 0;
}
// zipfile support
if(!strcasecmp(ext, ".zip")) {
fclose(rom);
ret = CartLoadZip(used_rom_name, &rom_data, &rom_size);
if(ret) {
if (ret == 4) strcpy(menuErrorMsg, "No ROMs found in zip.");
else sprintf(menuErrorMsg, "Unzip failed with code %i", ret);
printf("%s\n", menuErrorMsg);
return 0;
}
} else {
if( (ret = PicoCartLoad(rom, &rom_data, &rom_size)) ) {
sprintf(menuErrorMsg, "PicoCartLoad() failed.");
printf("%s\n", menuErrorMsg);
fclose(rom);
return 0;
}
fclose(rom);
if( (ret = PicoCartLoad(rom, &rom_data, &rom_size)) ) {
sprintf(menuErrorMsg, "PicoCartLoad() failed.");
printf("%s\n", menuErrorMsg);
pm_close(rom);
return 0;
}
pm_close(rom);
// detect wrong files (Pico crashes on very small files), also see if ROM EP is good
if(rom_size <= 0x200 || strncmp((char *)rom_data, "Pico", 4) == 0 ||