+static void Find_CurTrack(const u8 *time)
+{
+ int current, sect;
+
+ current = msf2sec(time);
+
+ for (cdr.CurTrack = 1; cdr.CurTrack < cdr.ResultTN[1]; cdr.CurTrack++) {
+ CDR_getTD(cdr.CurTrack + 1, cdr.ResultTD);
+ sect = fsm2sec(cdr.ResultTD);
+ if (sect - current >= 150)
+ break;
+ }
+}
+
+static void generate_subq(const u8 *time)
+{
+ unsigned char start[3], next[3];
+ unsigned int this_s, start_s, next_s, pregap;
+ int relative_s;
+
+ CDR_getTD(cdr.CurTrack, start);
+ if (cdr.CurTrack + 1 <= cdr.ResultTN[1]) {
+ pregap = 150;
+ CDR_getTD(cdr.CurTrack + 1, next);
+ }
+ else {
+ // last track - cd size
+ pregap = 0;
+ next[0] = cdr.SetSectorEnd[2];
+ next[1] = cdr.SetSectorEnd[1];
+ next[2] = cdr.SetSectorEnd[0];
+ }
+
+ this_s = msf2sec(time);
+ start_s = fsm2sec(start);
+ next_s = fsm2sec(next);
+
+ cdr.TrackChanged = FALSE;
+
+ if (next_s - this_s < pregap) {
+ cdr.TrackChanged = TRUE;
+ cdr.CurTrack++;
+ start_s = next_s;
+ }
+
+ cdr.subq.Index = 1;
+
+ relative_s = this_s - start_s;
+ if (relative_s < 0) {
+ cdr.subq.Index = 0;
+ relative_s = -relative_s;
+ }
+ sec2msf(relative_s, cdr.subq.Relative);
+
+ cdr.subq.Track = itob(cdr.CurTrack);
+ cdr.subq.Relative[0] = itob(cdr.subq.Relative[0]);
+ cdr.subq.Relative[1] = itob(cdr.subq.Relative[1]);
+ cdr.subq.Relative[2] = itob(cdr.subq.Relative[2]);
+ cdr.subq.Absolute[0] = itob(time[0]);
+ cdr.subq.Absolute[1] = itob(time[1]);
+ cdr.subq.Absolute[2] = itob(time[2]);
+}
+
+static void ReadTrack(const u8 *time) {
+ unsigned char tmp[3];
+ struct SubQ *subq;
+ u16 crc;
+
+ tmp[0] = itob(time[0]);
+ tmp[1] = itob(time[1]);
+ tmp[2] = itob(time[2]);
+
+ if (memcmp(cdr.Prev, tmp, 3) == 0)
+ return;
+
+ CDR_LOG("ReadTrack *** %02x:%02x:%02x\n", tmp[0], tmp[1], tmp[2]);
+
+ cdr.NoErr = CDR_readTrack(tmp);
+ memcpy(cdr.Prev, tmp, 3);
+
+ if (CheckSBI(time))
+ return;
+
+ subq = (struct SubQ *)CDR_getBufferSub();
+ if (subq != NULL && cdr.CurTrack == 1) {
+ crc = calcCrc((u8 *)subq + 12, 10);
+ if (crc == (((u16)subq->CRC[0] << 8) | subq->CRC[1])) {
+ cdr.subq.Track = subq->TrackNumber;
+ cdr.subq.Index = subq->IndexNumber;
+ memcpy(cdr.subq.Relative, subq->TrackRelativeAddress, 3);
+ memcpy(cdr.subq.Absolute, subq->AbsoluteAddress, 3);
+ }
+ else {
+ CDR_LOG_I("subq bad crc @%02x:%02x:%02x\n",
+ tmp[0], tmp[1], tmp[2]);
+ }
+ }
+ else {
+ generate_subq(time);
+ }
+
+ CDR_LOG(" -> %02x,%02x %02x:%02x:%02x %02x:%02x:%02x\n",
+ cdr.subq.Track, cdr.subq.Index,
+ cdr.subq.Relative[0], cdr.subq.Relative[1], cdr.subq.Relative[2],
+ cdr.subq.Absolute[0], cdr.subq.Absolute[1], cdr.subq.Absolute[2]);
+}
+
+static void cdrPlayInterrupt_Autopause()
+{
+ u32 abs_lev_max = 0;
+ boolean abs_lev_chselect;
+ u32 i;
+
+ if ((cdr.Mode & MODE_AUTOPAUSE) && cdr.TrackChanged) {
+ CDR_LOG( "CDDA STOP\n" );
+
+ // Magic the Gathering
+ // - looping territory cdda
+
+ // ...?
+ //cdr.ResultReady = 1;
+ //cdr.Stat = DataReady;
+ cdr.Stat = DataEnd;
+ setIrq(0x200);
+
+ StopCdda();
+ SetPlaySeekRead(cdr.StatP, 0);
+ }
+ else if (((cdr.Mode & MODE_REPORT) || cdr.FastForward || cdr.FastBackward)) {
+ cdr.Result[0] = cdr.StatP;
+ cdr.Result[1] = cdr.subq.Track;
+ cdr.Result[2] = cdr.subq.Index;
+
+ abs_lev_chselect = cdr.subq.Absolute[1] & 0x01;
+
+ /* 8 is a hack. For accuracy, it should be 588. */
+ for (i = 0; i < 8; i++)
+ {
+ abs_lev_max = MAX_VALUE(abs_lev_max, abs(read_buf[i * 2 + abs_lev_chselect]));
+ }
+ abs_lev_max = MIN_VALUE(abs_lev_max, 32767);
+ abs_lev_max |= abs_lev_chselect << 15;
+
+ if (cdr.subq.Absolute[2] & 0x10) {
+ cdr.Result[3] = cdr.subq.Relative[0];
+ cdr.Result[4] = cdr.subq.Relative[1] | 0x80;
+ cdr.Result[5] = cdr.subq.Relative[2];
+ }
+ else {
+ cdr.Result[3] = cdr.subq.Absolute[0];
+ cdr.Result[4] = cdr.subq.Absolute[1];
+ cdr.Result[5] = cdr.subq.Absolute[2];
+ }
+
+ cdr.Result[6] = abs_lev_max >> 0;
+ cdr.Result[7] = abs_lev_max >> 8;
+
+ // Rayman: Logo freeze (resultready + dataready)
+ cdr.ResultReady = 1;
+ cdr.Stat = DataReady;
+
+ SetResultSize(8);
+ setIrq(0x201);
+ }
+}
+
+static int cdrSeekTime(unsigned char *target)
+{
+ int seekTime = abs(msf2sec(cdr.SetSectorPlay) - msf2sec(target)) * (cdReadTime / 200);
+ /*
+ * Gameblabla :
+ * It was originally set to 1000000 for Driver, however it is not high enough for Worms Pinball
+ * and was unreliable for that game.
+ * I also tested it against Mednafen and Driver's titlescreen music starts 25 frames later, not immediatly.
+ *
+ * Obviously, this isn't perfect but right now, it should be a bit better.
+ * Games to test this against if you change that setting :
+ * - Driver (titlescreen music delay and retry mission)
+ * - Worms Pinball (Will either not boot or crash in the memory card screen)
+ * - Viewpoint (short pauses if the delay in the ingame music is too long)
+ *
+ * It seems that 3386880 * 5 is too much for Driver's titlescreen and it starts skipping.
+ * However, 1000000 is not enough for Worms Pinball to reliably boot.
+ */
+ if(seekTime > 3386880 * 2) seekTime = 3386880 * 2;
+ CDR_LOG("seek: %.2f %.2f\n", (float)seekTime / PSXCLK, (float)seekTime / cdReadTime);
+ return seekTime;
+}
+
+static void cdrReadInterrupt(void);
+
+void cdrPlaySeekReadInterrupt(void)
+{
+ if (cdr.Reading) {
+ cdrReadInterrupt();
+ return;
+ }
+
+ if (!cdr.Play && (cdr.StatP & STATUS_SEEK)) {
+ if (cdr.Stat) {
+ CDR_LOG_I("cdrom: seek stat hack\n");
+ CDRPLAYSEEKREAD_INT(0x1000, 1);
+ return;
+ }
+ SetResultSize(1);
+ cdr.StatP |= STATUS_ROTATING;
+ SetPlaySeekRead(cdr.StatP, 0);
+ cdr.Result[0] = cdr.StatP;
+ cdr.Stat = Complete;
+ setIrq(0x202);
+
+ Find_CurTrack(cdr.SetSectorPlay);
+ ReadTrack(cdr.SetSectorPlay);
+ cdr.TrackChanged = FALSE;
+ return;
+ }
+
+ if (!cdr.Play) return;
+
+ CDR_LOG( "CDDA - %d:%d:%d\n",
+ cdr.SetSectorPlay[0], cdr.SetSectorPlay[1], cdr.SetSectorPlay[2] );
+
+ SetPlaySeekRead(cdr.StatP, STATUS_PLAY);
+ if (memcmp(cdr.SetSectorPlay, cdr.SetSectorEnd, 3) == 0) {
+ StopCdda();
+ SetPlaySeekRead(cdr.StatP, 0);
+ cdr.TrackChanged = TRUE;
+ }
+ else {
+ CDR_readCDDA(cdr.SetSectorPlay[0], cdr.SetSectorPlay[1], cdr.SetSectorPlay[2], (u8 *)read_buf);
+ }
+
+ if (!cdr.Stat && (cdr.Mode & (MODE_AUTOPAUSE|MODE_REPORT)))
+ cdrPlayInterrupt_Autopause();
+
+ if (!cdr.Muted && !Config.Cdda) {
+ cdrAttenuate(read_buf, CD_FRAMESIZE_RAW / 4, 1);
+ SPU_playCDDAchannel(read_buf, CD_FRAMESIZE_RAW, psxRegs.cycle, cdr.FirstSector);
+ cdr.FirstSector = 0;
+ }
+
+ cdr.SetSectorPlay[2]++;
+ if (cdr.SetSectorPlay[2] == 75) {
+ cdr.SetSectorPlay[2] = 0;
+ cdr.SetSectorPlay[1]++;
+ if (cdr.SetSectorPlay[1] == 60) {
+ cdr.SetSectorPlay[1] = 0;
+ cdr.SetSectorPlay[0]++;
+ }
+ }
+
+ // update for CdlGetlocP/autopause
+ generate_subq(cdr.SetSectorPlay);
+
+ CDRPLAYSEEKREAD_INT(cdReadTime, 0);
+}
+
+void cdrInterrupt(void) {
+ int no_busy_error = 0;
+ int start_rotating = 0;
+ int error = 0;
+ unsigned int seekTime = 0;
+ u32 second_resp_time = 0;
+ u8 ParamC;
+ u8 set_loc[3];
+ u16 Cmd;