static DEVICE_IMAGE_LOAD(cdrom)
{
dev_cdrom_t *cdrom = get_safe_token(&image.device());
chd_error err = (chd_error)0;
chd_file *chd = NULL;
astring tempstring;
if (image.software_entry() == NULL)
{
err = chd_open_file( image.image_core_file(), CHD_OPEN_READ, NULL, &chd ); /* CDs are never writeable */
if ( err )
goto error;
} else {
chd = get_disk_handle(image.device().machine, image.device().subtag(tempstring,"cdrom"));
}
/* open the CHD file */
cdrom->cdrom_handle = cdrom_open( chd );
if ( ! cdrom->cdrom_handle )
goto error;
return IMAGE_INIT_PASS;
error:
if ( chd )
chd_close( chd );
if ( err )
image.seterror( IMAGE_ERROR_UNSPECIFIED, chd_get_error_string( err ) );
return IMAGE_INIT_FAIL;
}
static chd_file *get_disc(const device_config *device)
{
mame_file *image_file = NULL;
chd_file *image_chd = NULL;
mame_path *path;
/* open a path to the ROMs and find the first CHD file */
path = mame_openpath(mame_options(), OPTION_ROMPATH);
if (path != NULL)
{
const osd_directory_entry *dir;
/* iterate while we get new objects */
while ((dir = mame_readpath(path)) != NULL)
{
int length = strlen(dir->name);
/* look for files ending in .chd */
if (length > 4 &&
dir->name[length - 4] == '.' &&
tolower(dir->name[length - 3]) == 'c' &&
tolower(dir->name[length - 2]) == 'h' &&
tolower(dir->name[length - 1]) == 'd')
{
file_error filerr;
chd_error chderr;
/* open the file itself via our search path */
filerr = mame_fopen(SEARCHPATH_IMAGE, dir->name, OPEN_FLAG_READ, &image_file);
if (filerr == FILERR_NONE)
{
/* try to open the CHD */
chderr = chd_open_file(mame_core_file(image_file), CHD_OPEN_READ, NULL, &image_chd);
if (chderr == CHDERR_NONE)
{
set_disk_handle(device->machine, "laserdisc", image_file, image_chd);
filename = astring_dupc(dir->name);
add_exit_callback(device->machine, free_string);
break;
}
/* close the file on failure */
mame_fclose(image_file);
image_file = NULL;
}
}
}
mame_closepath(path);
}
/* if we failed, pop a message and exit */
if (image_file == NULL)
fatalerror("No valid image file found!\n");
return get_disk_handle(device->machine, "laserdisc");
}
int harddisk_image_device::internal_load_hd(const char *metadata)
{
chd_error err = (chd_error)0;
int is_writeable;
/* open the CHD file */
do
{
is_writeable = !is_readonly();
m_chd = NULL;
err = chd_open_file(image_core_file(), is_writeable ? CHD_OPEN_READWRITE : CHD_OPEN_READ, NULL, &m_chd);
/* special case; if we get CHDERR_FILE_NOT_WRITEABLE, make the
* image read only and repeat */
if (err == CHDERR_FILE_NOT_WRITEABLE)
make_readonly();
}
while(!m_chd && is_writeable && (err == CHDERR_FILE_NOT_WRITEABLE));
if (!m_chd)
goto done;
/* if we created the image and hence, have metadata to set, set the metadata */
if (metadata)
{
err = chd_set_metadata(m_chd, HARD_DISK_METADATA_TAG, 0, metadata, strlen(metadata) + 1, 0);
if (err != CHDERR_NONE)
goto done;
}
/* open the hard disk file */
m_hard_disk_handle = hard_disk_open(m_chd);
if (!m_hard_disk_handle)
goto done;
done:
if (err)
{
/* if we had an error, close out the CHD */
if (m_chd != NULL)
{
chd_close(m_chd);
m_chd = NULL;
}
seterror(IMAGE_ERROR_UNSPECIFIED, chd_get_error_string(err));
}
return err ? IMAGE_INIT_FAIL : IMAGE_INIT_PASS;
}
chd_file *ldplayer_state::get_disc()
{
// open a path to the ROMs and find the first CHD file
file_enumerator path(machine().options().media_path());
// iterate while we get new objects
const osd_directory_entry *dir;
emu_file *image_file = NULL;
chd_file *image_chd = NULL;
while ((dir = path.next()) != NULL)
{
int length = strlen(dir->name);
// look for files ending in .chd
if (length > 4 &&
dir->name[length - 4] == '.' &&
tolower(dir->name[length - 3]) == 'c' &&
tolower(dir->name[length - 2]) == 'h' &&
tolower(dir->name[length - 1]) == 'd')
{
// open the file itself via our search path
image_file = auto_alloc(machine(), emu_file(machine().options().media_path(), OPEN_FLAG_READ));
file_error filerr = image_file->open(dir->name);
if (filerr == FILERR_NONE)
{
// try to open the CHD
chd_error chderr = chd_open_file(*image_file, CHD_OPEN_READ, NULL, &image_chd);
if (chderr == CHDERR_NONE)
{
set_disk_handle(machine(), "laserdisc", *image_file, *image_chd);
m_filename.cpy(dir->name);
break;
}
}
// close the file on failure
auto_free(machine(), image_file);
image_file = NULL;
}
}
// if we failed, pop a message and exit
if (image_file == NULL)
throw emu_fatalerror("No valid image file found!\n");
return get_disk_handle(machine(), "laserdisc");
}
