Function command_rawread

src/blkdev_cdimage.cpp:1023–1245

extern void encode_l2 (uae_u8 *p, int address);

static int command_rawread (int unitnum, uae_u8 *data, int sector, int size, int sectorsize, uae_u32 extra)
{
	int ret = 0;
	struct cdunit *cdu = unitisopen (unitnum);
	if (!cdu)
		return 0;
	int asector = sector;
	struct cdtoc *t = findtoc (cdu, &sector, true);
	int ssize;

	if (!t)
		goto end;

	ssize = t->size + t->skipsize;
	cdda_stop (cdu);
	if (sectorsize > 0) {
		if ((sectorsize == 2352 || sectorsize == 2368 || sectorsize == 2448) && t->size == 2336) {
			// 2336 -> 2352
			while (size-- > 0) {
				int address = asector + 150;
				if (isaudiotrack(&cdu->di.toc, sector)) {
					do_read(cdu, t, data, sector, 0, t->size, true);
				} else {
					data[0] = 0x00;
					memset(data + 1, 0xff, 11);
					data[12] = tobcd((uae_u8)(address / (60 * 75)));
					data[13] = tobcd((uae_u8)((address / 75) % 60));
					data[14] = tobcd((uae_u8)(address % 75));
					data[15] = 2; /* MODE2 */
					do_read(cdu, t, data + 16, sector, 0, t->size, false);
				}
				sector++;
				asector++;
				data += sectorsize;
				ret += sectorsize;
				if (sectorsize == 2448) {
					// all subs
					getsub_deinterleaved(data - SUB_CHANNEL_SIZE, cdu, t, sector);
				} else if (sectorsize == 2368) {
					// sub q only
					uae_u8 subs[SUB_CHANNEL_SIZE];
					getsub_deinterleaved(subs, cdu, t, sector);
					memcpy(data - SUBQ_SIZE, subs + SUBQ_SIZE, SUBQ_SIZE);
}
			}
		} else if (sectorsize == 2340 && t->size == 2336) {
			// 2336 -> 2340
			while (size-- > 0) {
				int address = asector + 150;
				data[0] = tobcd((uae_u8)(address / (60 * 75)));
				data[1] = tobcd((uae_u8)((address / 75) % 60));
				data[2] = tobcd((uae_u8)(address % 75));
				data[3] = 2; /* MODE2 */
				do_read(cdu, t, data + 4, sector, 0, t->size, false);
				sector++;
				asector++;
				data += sectorsize;
				ret += sectorsize;