mirror of
https://github.com/ekeeke/Genesis-Plus-GX.git
synced 2024-11-10 21:05:12 +01:00
[libretro] added support for disk control interface and m3u file lists (allow disk swapping in multi-disk CD games)
This commit is contained in:
ekeeke
parent
9630e59552
commit
82c4821503
Binary file not shown.
@ -1817,6 +1817,143 @@ void ROMCheatUpdate(void)
|
||||
}
|
||||
}
|
||||
|
||||
/****************************************************************************
|
||||
* Disk control interface
|
||||
****************************************************************************/
|
||||
#define MAX_DISKS 4
|
||||
static int disk_index;
|
||||
static int disk_count;
|
||||
static char *disk_info[MAX_DISKS];
|
||||
|
||||
static bool disk_set_eject_state(bool ejected)
|
||||
{
|
||||
if (system_hw != SYSTEM_MCD)
|
||||
return false;
|
||||
|
||||
if (ejected)
|
||||
{
|
||||
cdd.status = CD_OPEN;
|
||||
scd.regs[0x36>>1].byte.h = 0x01;
|
||||
}
|
||||
else if (cdd.status == CD_OPEN)
|
||||
{
|
||||
cdd.status = cdd.loaded ? CD_TOC : NO_DISC;
|
||||
}
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
static bool disk_get_eject_state(void)
|
||||
{
|
||||
if (system_hw != SYSTEM_MCD)
|
||||
return false;
|
||||
|
||||
return (cdd.status == CD_OPEN);
|
||||
}
|
||||
|
||||
static unsigned int disk_get_image_index(void)
|
||||
{
|
||||
if ((system_hw != SYSTEM_MCD) || !cdd.loaded)
|
||||
return disk_count;
|
||||
|
||||
return disk_index;
|
||||
}
|
||||
|
||||
static bool disk_set_image_index(unsigned int index)
|
||||
{
|
||||
char header[0x210];
|
||||
|
||||
if (system_hw != SYSTEM_MCD)
|
||||
return false;
|
||||
|
||||
if (index >= disk_count)
|
||||
{
|
||||
cdd.loaded = 0;
|
||||
return true;
|
||||
}
|
||||
|
||||
if (disk_info[index] == NULL)
|
||||
return false;
|
||||
|
||||
cdd_load(disk_info[index], header);
|
||||
|
||||
if (!cdd.loaded)
|
||||
return false;
|
||||
|
||||
disk_index = index;
|
||||
return true;
|
||||
}
|
||||
|
||||
static unsigned int disk_get_num_images(void)
|
||||
{
|
||||
return disk_count;
|
||||
}
|
||||
|
||||
static bool disk_replace_image_index(unsigned index, const struct retro_game_info *info)
|
||||
{
|
||||
if (system_hw != SYSTEM_MCD)
|
||||
return false;
|
||||
|
||||
if (index >= disk_count)
|
||||
return false;
|
||||
|
||||
if (disk_info[index] != NULL)
|
||||
free(disk_info[index]);
|
||||
|
||||
disk_info[index] = NULL;
|
||||
|
||||
if (info != NULL)
|
||||
{
|
||||
if (info->path == NULL)
|
||||
return false;
|
||||
|
||||
disk_info[index] = strdup(info->path);
|
||||
|
||||
if (index == disk_index)
|
||||
return disk_set_image_index(index);
|
||||
}
|
||||
else
|
||||
{
|
||||
int i = index;
|
||||
|
||||
while (i < (disk_count-1))
|
||||
{
|
||||
disk_info[i] = disk_info[i+1];
|
||||
disk_info[i+1] = NULL;
|
||||
}
|
||||
|
||||
disk_count--;
|
||||
|
||||
if (index < disk_index)
|
||||
disk_index--;
|
||||
}
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
static bool disk_add_image_index(void)
|
||||
{
|
||||
if (system_hw != SYSTEM_MCD)
|
||||
return false;
|
||||
|
||||
if (disk_count >= MAX_DISKS)
|
||||
return false;
|
||||
|
||||
disk_count++;
|
||||
return true;
|
||||
}
|
||||
|
||||
static struct retro_disk_control_callback disk_ctrl =
|
||||
{
|
||||
disk_set_eject_state,
|
||||
disk_get_eject_state,
|
||||
disk_get_image_index,
|
||||
disk_set_image_index,
|
||||
disk_get_num_images,
|
||||
disk_replace_image_index,
|
||||
disk_add_image_index
|
||||
};
|
||||
|
||||
/************************************
|
||||
* libretro implementation
|
||||
************************************/
|
||||
@ -2048,7 +2185,7 @@ void retro_get_system_info(struct retro_system_info *info)
|
||||
#define GIT_VERSION ""
|
||||
#endif
|
||||
info->library_version = "v1.7.4" GIT_VERSION;
|
||||
info->valid_extensions = "mdx|md|smd|gen|bin|cue|iso|chd|sms|gg|sg";
|
||||
info->valid_extensions = "m3u|mdx|md|smd|gen|bin|cue|iso|chd|sms|gg|sg";
|
||||
info->block_extract = false;
|
||||
info->need_fullpath = true;
|
||||
}
|
||||
@ -2362,11 +2499,105 @@ bool retro_load_game(const struct retro_game_info *info)
|
||||
log_cb(RETRO_LOG_INFO, "Sega/Mega CD RAM CART is located at: %s\n", CART_BRAM);
|
||||
}
|
||||
|
||||
g_rom_data = info->data;
|
||||
g_rom_data = (void *)info->data;
|
||||
g_rom_size = info->size;
|
||||
|
||||
if (!load_rom((char *)info->path))
|
||||
return false;
|
||||
/* Clear disk interface (already done in retro_unload_game but better be safe) */
|
||||
disk_count = 0;
|
||||
disk_index = 0;
|
||||
for (i=0; i<MAX_DISKS; i++)
|
||||
{
|
||||
if (disk_info[i] != NULL)
|
||||
{
|
||||
free(disk_info[i]);
|
||||
disk_info[i] = NULL;
|
||||
}
|
||||
}
|
||||
|
||||
/* M3U file list support */
|
||||
if ((strlen(info->path) > 4) && !strncmp(info->path + strlen(info->path) - 4, ".m3u", 4))
|
||||
{
|
||||
RFILE *fd = filestream_open(info->path, RETRO_VFS_FILE_ACCESS_READ, RETRO_VFS_FILE_ACCESS_HINT_NONE);
|
||||
if (fd)
|
||||
{
|
||||
int len;
|
||||
char linebuf[512];
|
||||
while ((filestream_gets(fd, linebuf, 512) != NULL) && (disk_count < MAX_DISKS))
|
||||
{
|
||||
/* skip commented lines */
|
||||
if (linebuf[0] != '#')
|
||||
{
|
||||
len = strlen(linebuf);
|
||||
if (len > 0)
|
||||
{
|
||||
/* remove end-of-line character */
|
||||
if (linebuf[len-1] == '\n')
|
||||
{
|
||||
linebuf[len-1] = 0;
|
||||
len--;
|
||||
}
|
||||
|
||||
/* remove carriage-return character */
|
||||
if (len && (linebuf[len-1] == '\r'))
|
||||
{
|
||||
linebuf[len-1] = 0;
|
||||
len--;
|
||||
}
|
||||
|
||||
/* append file path to disk image file name */
|
||||
disk_info[disk_count] = malloc(strlen(g_rom_dir) + len + 2);
|
||||
if (disk_info[disk_count] != NULL)
|
||||
{
|
||||
/* add file to disk interface */
|
||||
sprintf(disk_info[disk_count], "%s%c%s", g_rom_dir, slash, linebuf);
|
||||
disk_count++;
|
||||
if (log_cb)
|
||||
log_cb(RETRO_LOG_INFO, "Disk #%d added from M3U file list: %s\n", disk_count, disk_info[disk_count-1]);
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/* automatically try to load first disk if at least one file was added to disk interface from M3U file list */
|
||||
if (disk_count > 0)
|
||||
{
|
||||
if (!load_rom(disk_info[0]))
|
||||
{
|
||||
if (log_cb)
|
||||
log_cb(RETRO_LOG_ERROR, "Could not load %s from M3U file list (%d)\n", disk_info[0], size);
|
||||
|
||||
/* clear initialized disk interface before returning an error */
|
||||
for (i=0; i<disk_count; i++)
|
||||
{
|
||||
if (disk_info[i] != NULL)
|
||||
{
|
||||
free(disk_info[i]);
|
||||
disk_info[i] = NULL;
|
||||
}
|
||||
}
|
||||
disk_count = 0;
|
||||
return false;
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
/* error adding disks from M3U */
|
||||
return false;
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
if (load_rom((char *)info->path) <= 0)
|
||||
return false;
|
||||
|
||||
/* automatically add loaded CD to disk interface */
|
||||
if ((system_hw == SYSTEM_MCD) && cdd.loaded)
|
||||
{
|
||||
disk_count = 1;
|
||||
disk_info[0] = strdup(info->path);
|
||||
}
|
||||
}
|
||||
|
||||
if ((config.bios & 1) && !(system_bios & SYSTEM_MD))
|
||||
{
|
||||
@ -2417,6 +2648,19 @@ bool retro_load_game_special(unsigned game_type, const struct retro_game_info *i
|
||||
|
||||
void retro_unload_game(void)
|
||||
{
|
||||
/* Clear disk interface */
|
||||
int i;
|
||||
disk_count = 0;
|
||||
disk_index = 0;
|
||||
for (i=0; i<MAX_DISKS; i++)
|
||||
{
|
||||
if (disk_info[i] != NULL)
|
||||
{
|
||||
free(disk_info[i]);
|
||||
disk_info[i] = NULL;
|
||||
}
|
||||
}
|
||||
|
||||
if (system_hw == SYSTEM_MCD)
|
||||
bram_save();
|
||||
|
||||
@ -2504,6 +2748,7 @@ void retro_init(void)
|
||||
check_system_specs();
|
||||
|
||||
environ_cb(RETRO_ENVIRONMENT_SET_SERIALIZATION_QUIRKS, &serialization_quirks);
|
||||
environ_cb(RETRO_ENVIRONMENT_SET_DISK_CONTROL_INTERFACE, &disk_ctrl);
|
||||
}
|
||||
|
||||
void retro_deinit(void)
|
||||
|
||||
Loading…
Reference in New Issue
Block a user