int chd_create_ref(void *ref, UINT64 logicalbytes, UINT32 hunkbytes, UINT32 compression, chd_file *parent)
{
char filename[ENCODED_IMAGE_REF_LEN];
encode_ptr(ref, filename);
return chd_create(filename, logicalbytes, hunkbytes, compression, parent);
}
static void process_disk_entries(rom_load_data *romdata, const rom_entry *romp)
{
/* loop until we hit the end of this region */
while (!ROMENTRY_ISREGIONEND(romp))
{
/* handle files */
if (ROMENTRY_ISFILE(romp))
{
chd_file *source, *diff = NULL;
chd_header header;
char filename[1024];
char acthash[HASH_BUF_SIZE];
chd_error err;
/* make the filename of the source */
sprintf(filename, "%s.chd", ROM_GETNAME(romp));
/* first open the source drive */
debugload("Opening disk image: %s\n", filename);
err = open_disk_image(Machine->gamedrv, romp, &source);
if (err != CHDERR_NONE)
{
if (err == CHDERR_UNSUPPORTED_VERSION)
sprintf(&romdata->errorbuf[strlen(romdata->errorbuf)], "%s UNSUPPORTED CHD VERSION\n", filename);
else
sprintf(&romdata->errorbuf[strlen(romdata->errorbuf)], "%s NOT FOUND\n", filename);
/* if this is NO_DUMP, keep going, though the system may not be able to handle it */
if (hash_data_has_info(ROM_GETHASHDATA(romp), HASH_INFO_NO_DUMP))
romdata->warnings++;
else
romdata->errors++;
romp++;
continue;
}
/* get the header and extract the MD5/SHA1 */
header = *chd_get_header(source);
hash_data_clear(acthash);
hash_data_insert_binary_checksum(acthash, HASH_MD5, header.md5);
hash_data_insert_binary_checksum(acthash, HASH_SHA1, header.sha1);
/* verify the MD5 */
if (!hash_data_is_equal(ROM_GETHASHDATA(romp), acthash, 0))
{
sprintf(&romdata->errorbuf[strlen(romdata->errorbuf)], "%s WRONG CHECKSUMS:\n", filename);
dump_wrong_and_correct_checksums(romdata, ROM_GETHASHDATA(romp), acthash);
romdata->warnings++;
}
else if (hash_data_has_info(ROM_GETHASHDATA(romp), HASH_INFO_BAD_DUMP))
{
sprintf(&romdata->errorbuf[strlen(romdata->errorbuf)], "%s CHD NEEDS REDUMP\n", filename);
romdata->warnings++;
}
/* if not read-only, make the diff file */
if (!DISK_ISREADONLY(romp))
{
/* make the filename of the diff */
sprintf(filename, "%s.dif", ROM_GETNAME(romp));
/* try to open the diff */
debugload("Opening differencing image: %s\n", filename);
err = chd_open(filename, CHD_OPEN_READWRITE, source, &diff);
if (err != CHDERR_NONE)
{
/* didn't work; try creating it instead */
debugload("Creating differencing image: %s\n", filename);
err = chd_create(filename, 0, 0, CHDCOMPRESSION_NONE, source);
if (err != CHDERR_NONE)
{
if (err == CHDERR_UNSUPPORTED_VERSION)
sprintf(&romdata->errorbuf[strlen(romdata->errorbuf)], "%s UNSUPPORTED CHD VERSION\n", filename);
else
sprintf(&romdata->errorbuf[strlen(romdata->errorbuf)], "%s: CAN'T CREATE DIFF FILE\n", filename);
romdata->errors++;
romp++;
continue;
}
/* open the newly-created diff file */
debugload("Opening differencing image: %s\n", filename);
err = chd_open(filename, CHD_OPEN_READWRITE, source, &diff);
if (err != CHDERR_NONE)
{
if (err == CHDERR_UNSUPPORTED_VERSION)
sprintf(&romdata->errorbuf[strlen(romdata->errorbuf)], "%s UNSUPPORTED CHD VERSION\n", filename);
else
sprintf(&romdata->errorbuf[strlen(romdata->errorbuf)], "%s: CAN'T OPEN DIFF FILE\n", filename);
romdata->errors++;
romp++;
continue;
}
}
}
/* we're okay, set the handle */
debugload("Assigning to handle %d\n", DISK_GETINDEX(romp));
disk_handle[DISK_GETINDEX(romp)] = DISK_ISREADONLY(romp) ? source : diff;
romp++;
}
}
}
static int process_disk_entries(struct rom_load_data *romdata, const struct RomModule *romp)
{
/* loop until we hit the end of this region */
while (!ROMENTRY_ISREGIONEND(romp))
{
/* handle files */
if (ROMENTRY_ISFILE(romp))
{
struct chd_file *source, *diff = NULL;
struct chd_header header;
char filename[1024], *c;
char acthash[HASH_BUF_SIZE];
int err;
/* make the filename of the source */
strcpy(filename, ROM_GETNAME(romp));
c = strrchr(filename, '.');
if (c)
strcpy(c, ".chd");
else
strcat(filename, ".chd");
/* first open the source drive */
debugload("Opening disk image: %s\n", filename);
source = chd_open(filename, 0, NULL);
if (!source)
{
if (chd_get_last_error() == CHDERR_UNSUPPORTED_VERSION)
sprintf(&romdata->errorbuf[strlen(romdata->errorbuf)], "%-12s UNSUPPORTED CHD VERSION\n", filename);
else
sprintf(&romdata->errorbuf[strlen(romdata->errorbuf)], "%-12s NOT FOUND\n", filename);
romdata->errors++;
romp++;
continue;
}
/* get the header and extract the MD5/SHA1 */
header = *chd_get_header(source);
hash_data_clear(acthash);
hash_data_insert_binary_checksum(acthash, HASH_MD5, header.md5);
hash_data_insert_binary_checksum(acthash, HASH_SHA1, header.sha1);
/* verify the MD5 */
if (!hash_data_is_equal(ROM_GETHASHDATA(romp), acthash, 0))
{
sprintf(&romdata->errorbuf[strlen(romdata->errorbuf)], "%-12s WRONG CHECKSUMS:\n", filename);
dump_wrong_and_correct_checksums(romdata, ROM_GETHASHDATA(romp), acthash);
romdata->warnings++;
}
/* if not read-only, make the diff file */
if (!DISK_ISREADONLY(romp))
{
/* make the filename of the diff */
strcpy(filename, ROM_GETNAME(romp));
c = strrchr(filename, '.');
if (c)
strcpy(c, ".dif");
else
strcat(filename, ".dif");
/* try to open the diff */
debugload("Opening differencing image: %s\n", filename);
diff = chd_open(filename, 1, source);
if (!diff)
{
/* didn't work; try creating it instead */
debugload("Creating differencing image: %s\n", filename);
err = chd_create(filename, 0, 0, CHDCOMPRESSION_NONE, source);
if (err != CHDERR_NONE)
{
if (chd_get_last_error() == CHDERR_UNSUPPORTED_VERSION)
sprintf(&romdata->errorbuf[strlen(romdata->errorbuf)], "%-12s UNSUPPORTED CHD VERSION\n", filename);
else
sprintf(&romdata->errorbuf[strlen(romdata->errorbuf)], "%-12s: CAN'T CREATE DIFF FILE\n", filename);
romdata->errors++;
romp++;
continue;
}
/* open the newly-created diff file */
debugload("Opening differencing image: %s\n", filename);
diff = chd_open(filename, 1, source);
if (!diff)
{
if (chd_get_last_error() == CHDERR_UNSUPPORTED_VERSION)
sprintf(&romdata->errorbuf[strlen(romdata->errorbuf)], "%-12s UNSUPPORTED CHD VERSION\n", filename);
else
sprintf(&romdata->errorbuf[strlen(romdata->errorbuf)], "%-12s: CAN'T OPEN DIFF FILE\n", filename);
romdata->errors++;
romp++;
continue;
}
}
}
/* we're okay, set the handle */
debugload("Assigning to handle %d\n", DISK_GETINDEX(romp));
disk_handle[DISK_GETINDEX(romp)] = DISK_ISREADONLY(romp) ? source : diff;
romp++;
}
}
return 1;
}
/*
imghd_create()
Create a MAME HD image
*/
imgtoolerr_t imghd_create(imgtool_stream *stream, UINT32 hunksize, UINT32 cylinders, UINT32 heads, UINT32 sectors, UINT32 seclen)
{
imgtoolerr_t err = IMGTOOLERR_SUCCESS;
char encoded_image_ref[encoded_image_ref_max_len];
chd_interface interface_save;
UINT8 *cache = NULL;
chd_file *chd = NULL;
int rc;
UINT64 logicalbytes;
int hunknum, totalhunks;
char metadata[256];
/* jump through the hoops as required by the CHD system */
encode_image_ref(stream, encoded_image_ref);
chd_save_interface(&interface_save);
chd_set_interface(&imgtool_chd_interface);
/* sanity check args */
if (hunksize >= 2048)
{
err = IMGTOOLERR_PARAMCORRUPT;
goto done;
}
if (hunksize <= 0)
hunksize = 1024; /* default value */
/* bail if we are read only */
if (stream_isreadonly(stream))
{
err = IMGTOOLERR_READONLY;
goto done;
}
/* calculations */
logicalbytes = (UINT64)cylinders * heads * sectors * seclen;
/* create the new hard drive */
rc = chd_create(encoded_image_ref, logicalbytes, hunksize, CHDCOMPRESSION_NONE, NULL);
if (rc != CHDERR_NONE)
{
err = map_chd_error(rc);
goto done;
}
/* open the new hard drive */
rc = chd_open(encoded_image_ref, CHD_OPEN_READWRITE, NULL, &chd);
if (rc != CHDERR_NONE)
{
err = map_chd_error(rc);
goto done;
}
/* write the metadata */
sprintf(metadata, HARD_DISK_METADATA_FORMAT, cylinders, heads, sectors, seclen);
err = chd_set_metadata(chd, HARD_DISK_METADATA_TAG, 0, metadata, strlen(metadata) + 1);
if (rc != CHDERR_NONE)
{
err = map_chd_error(rc);
goto done;
}
/* alloc and zero buffer */
cache = malloc(hunksize);
if (!cache)
{
err = IMGTOOLERR_OUTOFMEMORY;
goto done;
}
memset(cache, '\0', hunksize);
/* zero out every hunk */
totalhunks = (logicalbytes + hunksize - 1) / hunksize;
for (hunknum = 0; hunknum < totalhunks; hunknum++)
{
rc = chd_write(chd, hunknum, cache);
if (rc)
{
err = IMGTOOLERR_WRITEERROR;
goto done;
}
}
done:
if (cache)
free(cache);
if (chd)
chd_close(chd);
chd_set_interface(&interface_save);
return err;
}
