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pcecd: enable backup save/load for CD games.

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This commit is contained in:
sorgelig
2020-04-25 19:50:59 +08:00
parent 8b2779508a
commit 870de4e3f3
1 changed files with 24 additions and 20 deletions
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44
support/pcecd/pcecd.cpp
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@@ -132,27 +132,26 @@ static char us_sig[] =
0x76, 0x96, 0xC6, 0xCE, 0x34, 0x32, 0x2E, 0x26,
0x74, 0x00 };
static int load_bios(char *name)
static int load_bios(char *biosname, const char *cuename)
{
uint32_t size = FileLoad(name, 0, 0);
uint32_t size = FileLoad(biosname, 0, 0);
if (!size) return 0;
if (size < 262144)
{
//not official bios
return user_io_file_tx(name, 0);
}
fileTYPE f;
if (!FileOpen(&f, name)) return 0;
if (!FileOpen(&f, biosname)) return 0;
int swap = 0;
uint32_t start = size & 0x3FF;
size = 262144;
FileSeek(&f, start+size-26, SEEK_SET);
memset(buf, 0, sizeof(buf));
FileReadAdv(&f, buf, 26);
int swap = !memcmp(buf, us_sig, sizeof(us_sig));
if (size >= 262144)
{
size = 262144;
FileSeek(&f, start + size - 26, SEEK_SET);
memset(buf, 0, sizeof(buf));
FileReadAdv(&f, buf, 26);
swap = !memcmp(buf, us_sig, sizeof(us_sig));
}
user_io_set_index(0);
user_io_set_download(1);
@@ -175,6 +174,9 @@ static int load_bios(char *name)
user_io_file_tx_write((uint8_t*)buf, chunk);
}
FileGenerateSavePath(cuename, buf);
user_io_file_mount(buf, 0, 1);
user_io_set_download(0);
return 1;
@@ -187,10 +189,12 @@ void pcecd_set_image(int num, const char *filename)
pcecdd.Unload();
pcecdd.state = PCECD_STATE_NODISC;
if (strlen(filename)) {
static char path[1024];
if (strlen(filename))
{
printf("Load CD: %s\n", filename);
if (pcecdd.Load(filename) > 0) {
if (pcecdd.Load(filename) > 0)
{
pcecdd.state = pcecdd.loaded ? PCECD_STATE_IDLE : PCECD_STATE_NODISC;
pcecdd.latency = 10;
pcecdd.SendData = pcecd_send_data;
@@ -203,13 +207,13 @@ void pcecd_set_image(int num, const char *filename)
{
p++;
strcpy(p, "cd_bios.rom");
loaded = load_bios(buf);
loaded = load_bios(buf, filename);
}
if (!loaded)
{
sprintf(path, "%s/cd_bios.rom", user_io_get_core_path());
load_bios(path);
sprintf(buf, "%s/cd_bios.rom", user_io_get_core_path());
load_bios(buf, filename);
}
notify_mount(1);
}