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comparison cdd_mcu.c @ 2084:c9d3b8e1ea56

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Implement a couple more CDD commands force CDDA mute when seeking
author Michael Pavone <pavone@retrodev.com>
date Sat, 05 Feb 2022 16:38:22 -0800
parents cfd53c94fffb
children 0db3af42dd72
comparison
equal deleted inserted replaced
2083:372625dd9590 2084:c9d3b8e1ea56
120 if (!context->seeking) { 120 if (!context->seeking) {
121 context->head_pba++; 121 context->head_pba++;
122 } 122 }
123 if (context->head_pba >= LEADIN_SECTORS) { 123 if (context->head_pba >= LEADIN_SECTORS) {
124 uint8_t track = context->media->seek(context->media, context->head_pba - LEADIN_SECTORS); 124 uint8_t track = context->media->seek(context->media, context->head_pba - LEADIN_SECTORS);
125 if (context->media->tracks[track].type == TRACK_AUDIO) { 125 if (!context->seeking && context->media->tracks[track].type == TRACK_AUDIO) {
126 gate_array[GAO_CDD_CTRL] &= ~BIT_MUTE; 126 gate_array[GAO_CDD_CTRL] &= ~BIT_MUTE;
127 } 127 }
128 } 128 }
129 break; 129 break;
130 case DS_PAUSE: 130 case DS_PAUSE:
131 handle_seek(context); 131 handle_seek(context);
132 if (context->head_pba >= LEADIN_SECTORS) {
133 uint8_t track = context->media->seek(context->media, context->head_pba - LEADIN_SECTORS);
134 if (!context->seeking && context->media->tracks[track].type == TRACK_AUDIO) {
135 gate_array[GAO_CDD_CTRL] &= ~BIT_MUTE;
136 }
137 }
132 break; 138 break;
133 case DS_TOC_READ: 139 case DS_TOC_READ:
134 handle_seek(context); 140 handle_seek(context);
135 if (!context->seeking) { 141 if (!context->seeking) {
136 context->head_pba++; 142 context->head_pba++;
145 } else { 151 } else {
146 context->status = DS_NO_DISC; 152 context->status = DS_NO_DISC;
147 } 153 }
148 } 154 }
149 break; 155 break;
150 156 case DS_TRACKING:
157 handle_seek(context);
158 if (!context->seeking) {
159 context->status = DS_PAUSE;
160 }
161 if (context->head_pba >= LEADIN_SECTORS) {
162 uint8_t track = context->media->seek(context->media, context->head_pba - LEADIN_SECTORS);
163 if (!context->seeking && context->media->tracks[track].type == TRACK_AUDIO) {
164 gate_array[GAO_CDD_CTRL] &= ~BIT_MUTE;
165 }
166 }
167 break;
151 } 168 }
152 if (context->first_cmd_received) { 169 if (context->first_cmd_received) {
153 switch (context->requested_format) 170 switch (context->requested_format)
154 { 171 {
155 case SF_ABSOLUTE: 172 case SF_ABSOLUTE:
285 break; 302 break;
286 } 303 }
287 if (context->error_status == DS_STOP) { 304 if (context->error_status == DS_STOP) {
288 if (context->requested_format >= SF_TOCO && context->requested_format <= SF_TOCN) { 305 if (context->requested_format >= SF_TOCO && context->requested_format <= SF_TOCN) {
289 context->status_buffer.status = DS_TOC_READ; 306 context->status_buffer.status = DS_TOC_READ;
290 } else if (context->seeking) { 307 } else if (context->seeking && context->status != DS_TRACKING) {
291 context->status_buffer.status = DS_SEEK; 308 context->status_buffer.status = DS_SEEK;
292 } else { 309 } else {
293 context->status_buffer.status = context->status; 310 context->status_buffer.status = context->status;
294 } 311 }
295 } else { 312 } else {
436 } else { 453 } else {
437 puts("CDD CMD: PAUSE"); 454 puts("CDD CMD: PAUSE");
438 } 455 }
439 context->status = DS_PAUSE; 456 context->status = DS_PAUSE;
440 break; 457 break;
458 case CMD_PLAY:
459 if (context->status == DS_DOOR_OPEN || context->status == DS_TRAY_MOVING || context->status == DS_DISC_LEADOUT || context->status == DS_DISC_LEADIN) {
460 context->error_status = DS_CMD_ERROR;
461 break;
462 }
463 if (context->requested_format == SF_TOCT || context->requested_format == SF_TOCN) {
464 context->requested_format = SF_ABSOLUTE;
465 }
466 if (!context->toc_valid) {
467 context->error_status = DS_CMD_ERROR;
468 break;
469 }
470 if (context->status == DS_STOP || context->status == DS_TOC_READ) {
471 context->seeking = 1;
472 context->seek_pba = LEADIN_SECTORS + context->media->tracks[0].fake_pregap + context->media->tracks[0].start_lba;
473 printf("CDD CMD: PAUSE, seeking to %u\n", context->seek_pba);
474 } else {
475 puts("CDD CMD: PAUSE");
476 }
477 break;
478 //TODO: CMD_FFWD, CMD_RWD
479 case CMD_TRACK_SKIP:
480 if (context->status != DS_PLAY && context->status != DS_PAUSE && context->status != DS_DISC_LEADOUT) {
481 context->error_status = DS_CMD_ERROR;
482 break;
483 }
484 if (context->requested_format == SF_TOCT || context->requested_format == SF_TOCN) {
485 context->requested_format = SF_ABSOLUTE;
486 }
487 if (!context->toc_valid) {
488 context->error_status = DS_CMD_ERROR;
489 break;
490 }
491 {
492 int32_t to_skip = context->cmd_buffer.b.skip.tracks_highest << 12 | context->cmd_buffer.b.skip.tracks_midhigh << 8
493 | context->cmd_buffer.b.skip.tracks_midlow << 4 | context->cmd_buffer.b.skip.tracks_lowest;
494 if (context->cmd_buffer.b.skip.direction) {
495 to_skip = -to_skip;
496 }
497 printf("CDD CMD: TRACK_SKIP direction %u, num_tracks %i, delta %i\n", context->cmd_buffer.b.skip.direction, abs(to_skip), to_skip);
498 //circumference at 83mm point (roughly half way between inner and outer edge of program area)
499 //~ 260.75cm ~ 15 sectors
500 context->seek_pba = context->head_pba + to_skip * 15;
501 context->seeking = 1;
502 }
503 context->status = DS_TRACKING;
504 break;
441 default: 505 default:
442 printf("CDD CMD: Unimplemented(%d)\n", context->cmd_buffer.cmd_type); 506 printf("CDD CMD: Unimplemented(%d)\n", context->cmd_buffer.cmd_type);
443 } 507 }
444 } 508 }
445 509
471 next_subcode = context->cycle + SECTOR_CLOCKS; 535 next_subcode = context->cycle + SECTOR_CLOCKS;
472 update_status(context, gate_array); 536 update_status(context, gate_array);
473 next_nibble = context->cycle; 537 next_nibble = context->cycle;
474 context->current_status_nibble = 0; 538 context->current_status_nibble = 0;
475 gate_array[GAO_CDD_STATUS] |= BIT_DRS; 539 gate_array[GAO_CDD_STATUS] |= BIT_DRS;
476 if (context->status == DS_PLAY && context->head_pba >= LEADIN_SECTORS) { 540 if ((context->status == DS_PLAY || context->status == DS_PAUSE) && context->head_pba >= LEADIN_SECTORS) {
477 context->current_sector_byte = 0; 541 context->current_sector_byte = 0;
478 } 542 }
479 } 543 }
480 if (context->cycle >= next_nibble) { 544 if (context->cycle >= next_nibble) {
481 if (context->current_status_nibble == sizeof(cdd_status)) { 545 if (context->current_status_nibble == sizeof(cdd_status)) {