Function cd_qcode

src/akiko.cpp:707–756

/* read qcode */
static int last_play_pos;
static int cd_qcode (uae_u8 *d)
{
	uae_u8 *buf, *s, as;

	if (d)
		memset (d, 0, 11);
	last_play_pos = 0;
	buf = qcode_buf;
	as = buf[1];
	buf[2] = 0x80;
	if (!qcode_valid)
		return 0;
	if (cdrom_audiostatus != AUDIO_STATUS_IN_PROGRESS && cdrom_audiostatus != AUDIO_STATUS_PAUSED)
		return 0;
	s = buf + 4;
	last_play_pos = msf2lsn (fromlongbcd (s + 7));
	if (!d)
		return 0;
	buf[2] = 0;
	/* ??? */
	d[0] = 0;
	/* CtlAdr */
	d[1] = s[0];
	/* Track */
	d[2] = s[1];
	/* Index */
	d[3] = s[2];
	/* TrackPos */
	d[4] = s[3];
	d[5] = s[4];
	d[6] = s[5];
	/* DiskPos */
	d[7] = 0;
	d[8] = s[7];
	d[9] = s[8];
	d[10] = s[9];
	if (as == AUDIO_STATUS_IN_PROGRESS) {
		/* Make sure end of disc position is not missed.
		*/
		if (last_play_pos >= cdrom_toc_cd_buffer.lastaddress || cdrom_toc_cd_buffer.lastaddress - last_play_pos < 10) {
			int msf = lsn2msf (cdrom_toc_cd_buffer.lastaddress);
			d[8] = tobcd ((uae_u8)(msf >> 16));
			d[9] = tobcd ((uae_u8)(msf >> 8));
			d[10] = tobcd ((uae_u8)(msf >> 0));
		}
	}
//	write_log (_T("%02X.%02X.%02X.%02X.%02X.%02X.%02X.%02X.%02X.%02X.%02X.%02X\n"),
//		d[0], d[1], d[2], d[3], d[4], d[5], d[6], d[7], d[8], d[9], d[10], d[11]);
	return 0;
}

/* read toc */
static int get_cdrom_toc (void)