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106 | #ifdef HAVE_XORG_CONFIG_H1 |
107 | #include <xorg-config.h> |
108 | #endif |
109 | |
110 | #include <stdio.h> |
111 | #include <stdlib.h> |
112 | #include <string.h> |
113 | #include <math.h> |
114 | |
115 | #define MARGIN_PERCENT1.8 1.8 /* % of active vertical image */ |
116 | #define CELL_GRAN8.0 8.0 /* assumed character cell granularity */ |
117 | #define MIN_PORCH1 1 /* minimum front porch */ |
118 | #define V_SYNC_RQD3 3 /* width of vsync in lines */ |
119 | #define H_SYNC_PERCENT8.0 8.0 /* width of hsync as % of total line */ |
120 | #define MIN_VSYNC_PLUS_BP550.0 550.0 /* min time of vsync + back porch (microsec) */ |
121 | #define M600.0 600.0 /* blanking formula gradient */ |
122 | #define C40.0 40.0 /* blanking formula offset */ |
123 | #define K128.0 128.0 /* blanking formula scaling factor */ |
124 | #define J20.0 20.0 /* blanking formula scaling factor */ |
125 | |
126 | |
127 | |
128 | #define C_PRIME(((40.0 - 20.0) * 128.0/256.0) + 20.0) (((C40.0 - J20.0) * K128.0/256.0) + J20.0) |
129 | #define M_PRIME(128.0/256.0 * 600.0) (K128.0/256.0 * M600.0) |
130 | |
131 | |
132 | |
133 | typedef struct __mode { |
134 | int hr, hss, hse, hfl; |
135 | int vr, vss, vse, vfl; |
136 | float pclk, h_freq, v_freq; |
137 | } mode; |
138 | |
139 | typedef struct __options { |
140 | int x, y; |
141 | int xorgmode, fbmode; |
142 | float v_freq; |
143 | } options; |
144 | |
145 | |
146 | |
147 | void print_value(int n, const char *name, float val); |
148 | void print_xf86_mode(mode * m); |
149 | void print_fb_mode(mode * m); |
150 | mode *vert_refresh(int h_pixels, int v_lines, float freq, |
151 | int interlaced, int margins); |
152 | options *parse_command_line(int argc, char *argv[]); |
153 | |
154 | |
155 | |
156 | |
157 | |
158 | |
159 | int global_verbose = 0; |
160 | |
161 | void |
162 | print_value(int n, const char *name, float val) |
163 | { |
164 | if (global_verbose) { |
165 | printf("%2d: %-27s: %15f\n", n, name, val); |
166 | } |
167 | } |
168 | |
169 | |
170 | |
171 | void |
172 | print_xf86_mode(mode * m) |
173 | { |
174 | printf("\n"); |
175 | printf(" # %dx%d @ %.2f Hz (GTF) hsync: %.2f kHz; pclk: %.2f MHz\n", |
176 | m->hr, m->vr, m->v_freq, m->h_freq, m->pclk); |
177 | |
178 | printf(" Modeline \"%dx%d_%.2f\" %.2f" |
179 | " %d %d %d %d" |
180 | " %d %d %d %d" |
181 | " -HSync +Vsync\n\n", |
182 | m->hr, m->vr, m->v_freq, m->pclk, |
183 | m->hr, m->hss, m->hse, m->hfl, m->vr, m->vss, m->vse, m->vfl); |
184 | |
185 | } |
186 | |
187 | |
188 | |
189 | |
190 | |
191 | |
192 | |
193 | |
194 | |
195 | |
196 | |
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198 | |
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219 | |
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221 | |
222 | |
223 | |
224 | |
225 | |
226 | |
227 | |
228 | |
229 | |
230 | |
231 | |
232 | |
233 | void |
234 | print_fb_mode(mode * m) |
235 | { |
236 | printf("\n"); |
237 | printf("mode \"%dx%d %.2fHz 32bit (GTF)\"\n", m->hr, m->vr, m->v_freq); |
238 | printf(" # PCLK: %.2f MHz, H: %.2f kHz, V: %.2f Hz\n", |
239 | m->pclk, m->h_freq, m->v_freq); |
240 | printf(" geometry %d %d %d %d 32\n", m->hr, m->vr, m->hr, m->vr); |
241 | printf(" timings %d %d %d %d %d %d %d\n", (int) rint(1000000.0 / m->pclk), |
242 | m->hfl - m->hse, |
243 | m->hss - m->hr, |
244 | m->vfl - m->vse, |
245 | m->vss - m->vr, |
246 | m->hse - m->hss, |
247 | m->vse - m->vss); |
248 | printf(" hsync low\n"); |
249 | printf(" vsync high\n"); |
250 | printf("endmode\n\n"); |
251 | |
252 | } |
253 | |
254 | |
255 | |
256 | |
257 | |
258 | |
259 | |
260 | |
261 | |
262 | |
263 | |
264 | |
265 | |
266 | |
267 | mode * |
268 | vert_refresh(int h_pixels, int v_lines, float freq, int interlaced, int margins) |
269 | { |
270 | float h_pixels_rnd; |
271 | float v_lines_rnd; |
272 | float v_field_rate_rqd; |
273 | float top_margin; |
274 | float bottom_margin; |
275 | float interlace; |
276 | float h_period_est; |
277 | float vsync_plus_bp; |
278 | float v_back_porch; |
279 | float total_v_lines; |
280 | float v_field_rate_est; |
281 | float h_period; |
282 | float v_field_rate; |
283 | float v_frame_rate; |
284 | float left_margin; |
285 | float right_margin; |
286 | float total_active_pixels; |
287 | float ideal_duty_cycle; |
288 | float h_blank; |
289 | float total_pixels; |
290 | float pixel_freq; |
291 | float h_freq; |
292 | |
293 | float h_sync; |
294 | float h_front_porch; |
295 | float v_odd_front_porch_lines; |
296 | |
297 | mode *m = (mode *) malloc(sizeof(mode)); |
| |
298 | |
299 | |
300 | |
301 | |
302 | |
303 | |
304 | |
305 | |
306 | |
307 | h_pixels_rnd = rint((float) h_pixels / CELL_GRAN8.0) * CELL_GRAN8.0; |
308 | |
309 | print_value(1, "[H PIXELS RND]", h_pixels_rnd); |
310 | |
311 | |
312 | |
313 | |
314 | |
315 | |
316 | |
317 | |
318 | |
319 | |
320 | v_lines_rnd = interlaced ? |
| |
321 | rint((float) v_lines) / 2.0 : rint((float) v_lines); |
322 | |
323 | print_value(2, "[V LINES RND]", v_lines_rnd); |
324 | |
325 | |
326 | |
327 | |
328 | |
329 | |
330 | |
331 | v_field_rate_rqd = interlaced ? (freq * 2.0) : (freq); |
| |
332 | |
333 | print_value(3, "[V FIELD RATE RQD]", v_field_rate_rqd); |
334 | |
335 | |
336 | |
337 | |
338 | |
339 | |
340 | |
341 | |
342 | top_margin = margins ? rint(MARGIN_PERCENT1.8 / 100.0 * v_lines_rnd) : (0.0); |
| |
343 | |
344 | print_value(4, "[TOP MARGIN (LINES)]", top_margin); |
345 | |
346 | |
347 | |
348 | |
349 | |
350 | |
351 | |
352 | |
353 | bottom_margin = |
354 | margins ? rint(MARGIN_PERCENT1.8 / 100.0 * v_lines_rnd) : (0.0); |
| |
355 | |
356 | print_value(5, "[BOT MARGIN (LINES)]", bottom_margin); |
357 | |
358 | |
359 | |
360 | |
361 | |
362 | |
363 | interlace = interlaced ? 0.5 : 0.0; |
| |
364 | |
365 | print_value(6, "[INTERLACE]", interlace); |
366 | |
367 | |
368 | |
369 | |
370 | |
371 | |
372 | |
373 | |
374 | h_period_est = (((1.0 / v_field_rate_rqd) - (MIN_VSYNC_PLUS_BP550.0 / 1000000.0)) |
375 | / (v_lines_rnd + (2 * top_margin) + MIN_PORCH1 + interlace) |
376 | * 1000000.0); |
377 | |
378 | print_value(7, "[H PERIOD EST]", h_period_est); |
379 | |
380 | |
381 | |
382 | |
383 | |
384 | |
385 | vsync_plus_bp = rint(MIN_VSYNC_PLUS_BP550.0 / h_period_est); |
386 | |
387 | print_value(8, "[V SYNC+BP]", vsync_plus_bp); |
388 | |
389 | |
390 | |
391 | |
392 | |
393 | |
394 | |
395 | |
396 | v_back_porch = vsync_plus_bp - V_SYNC_RQD3; |
397 | |
398 | print_value(9, "[V BACK PORCH]", v_back_porch); |
399 | |
400 | |
401 | |
402 | |
403 | |
404 | |
405 | |
406 | |
407 | total_v_lines = v_lines_rnd + top_margin + bottom_margin + vsync_plus_bp + |
408 | interlace + MIN_PORCH1; |
409 | |
410 | print_value(10, "[TOTAL V LINES]", total_v_lines); |
411 | |
412 | |
413 | |
414 | |
415 | |
416 | |
417 | v_field_rate_est = 1.0 / h_period_est / total_v_lines * 1000000.0; |
418 | |
419 | print_value(11, "[V FIELD RATE EST]", v_field_rate_est); |
420 | |
421 | |
422 | |
423 | |
424 | |
425 | |
426 | h_period = h_period_est / (v_field_rate_rqd / v_field_rate_est); |
427 | |
428 | print_value(12, "[H PERIOD]", h_period); |
429 | |
430 | |
431 | |
432 | |
433 | |
434 | |
435 | v_field_rate = 1.0 / h_period / total_v_lines * 1000000.0; |
436 | |
437 | print_value(13, "[V FIELD RATE]", v_field_rate); |
438 | |
439 | |
440 | |
441 | |
442 | |
443 | |
444 | v_frame_rate = interlaced ? v_field_rate / 2.0 : v_field_rate; |
| |
445 | |
446 | print_value(14, "[V FRAME RATE]", v_frame_rate); |
447 | |
448 | |
449 | |
450 | |
451 | |
452 | |
453 | |
454 | |
455 | |
456 | left_margin = margins ? |
| |
457 | rint(h_pixels_rnd * MARGIN_PERCENT1.8 / 100.0 / CELL_GRAN8.0) * CELL_GRAN8.0 : |
458 | 0.0; |
459 | |
460 | print_value(15, "[LEFT MARGIN (PIXELS)]", left_margin); |
461 | |
462 | |
463 | |
464 | |
465 | |
466 | |
467 | |
468 | |
469 | |
470 | right_margin = margins ? |
| |
471 | rint(h_pixels_rnd * MARGIN_PERCENT1.8 / 100.0 / CELL_GRAN8.0) * CELL_GRAN8.0 : |
472 | 0.0; |
473 | |
474 | print_value(16, "[RIGHT MARGIN (PIXELS)]", right_margin); |
475 | |
476 | |
477 | |
478 | |
479 | |
480 | |
481 | |
482 | |
483 | total_active_pixels = h_pixels_rnd + left_margin + right_margin; |
484 | |
485 | print_value(17, "[TOTAL ACTIVE PIXELS]", total_active_pixels); |
486 | |
487 | |
488 | |
489 | |
490 | |
491 | |
492 | |
493 | ideal_duty_cycle = C_PRIME(((40.0 - 20.0) * 128.0/256.0) + 20.0) - (M_PRIME(128.0/256.0 * 600.0) * h_period / 1000.0); |
494 | |
495 | print_value(18, "[IDEAL DUTY CYCLE]", ideal_duty_cycle); |
496 | |
497 | |
498 | |
499 | |
500 | |
501 | |
502 | |
503 | |
504 | |
505 | |
506 | |
507 | h_blank = rint(total_active_pixels * |
508 | ideal_duty_cycle / |
509 | (100.0 - ideal_duty_cycle) / |
510 | (2.0 * CELL_GRAN8.0)) * (2.0 * CELL_GRAN8.0); |
511 | |
512 | print_value(19, "[H BLANK (PIXELS)]", h_blank); |
513 | |
514 | |
515 | |
516 | |
517 | |
518 | |
519 | total_pixels = total_active_pixels + h_blank; |
520 | |
521 | print_value(20, "[TOTAL PIXELS]", total_pixels); |
522 | |
523 | |
524 | |
525 | |
526 | |
527 | |
528 | pixel_freq = total_pixels / h_period; |
529 | |
530 | print_value(21, "[PIXEL FREQ]", pixel_freq); |
531 | |
532 | |
533 | |
534 | |
535 | |
536 | |
537 | h_freq = 1000.0 / h_period; |
538 | |
539 | print_value(22, "[H FREQ]", h_freq); |
540 | |
541 | |
542 | |
543 | |
544 | |
545 | |
546 | |
547 | |
548 | |
549 | |
550 | |
551 | |
552 | h_sync = |
553 | rint(H_SYNC_PERCENT8.0 / 100.0 * total_pixels / CELL_GRAN8.0) * CELL_GRAN8.0; |
554 | |
555 | print_value(17, "[H SYNC (PIXELS)]", h_sync); |
556 | |
557 | |
558 | |
559 | |
560 | |
561 | |
562 | h_front_porch = (h_blank / 2.0) - h_sync; |
563 | |
564 | print_value(18, "[H FRONT PORCH (PIXELS)]", h_front_porch); |
565 | |
566 | |
567 | |
568 | |
569 | |
570 | |
571 | v_odd_front_porch_lines = MIN_PORCH1 + interlace; |
572 | |
573 | print_value(36, "[V ODD FRONT PORCH(LINES)]", v_odd_front_porch_lines); |
574 | |
575 | |
576 | |
577 | m->hr = (int) (h_pixels_rnd); |
578 | m->hss = (int) (h_pixels_rnd + h_front_porch); |
579 | m->hse = (int) (h_pixels_rnd + h_front_porch + h_sync); |
580 | m->hfl = (int) (total_pixels); |
581 | |
582 | m->vr = (int) (v_lines_rnd); |
583 | m->vss = (int) (v_lines_rnd + v_odd_front_porch_lines); |
584 | m->vse = (int) (int) (v_lines_rnd + v_odd_front_porch_lines + V_SYNC_RQD3); |
585 | m->vfl = (int) (total_v_lines); |
586 | |
587 | m->pclk = pixel_freq; |
588 | m->h_freq = h_freq; |
589 | m->v_freq = freq; |
590 | |
591 | return m; |
592 | |
593 | } |
594 | |
595 | |
596 | |
597 | |
598 | |
599 | |
600 | |
601 | options * |
602 | parse_command_line(int argc, char *argv[]) |
603 | { |
604 | int n; |
605 | |
606 | options *o = (options *) calloc(1, sizeof(options)); |
607 | |
608 | if (argc < 4) |
609 | goto bad_option; |
610 | |
611 | o->x = atoi(argv[1]); |
612 | o->y = atoi(argv[2]); |
613 | o->v_freq = atof(argv[3]); |
614 | |
615 | |
616 | |
617 | n = 4; |
618 | |
619 | while (n < argc) { |
620 | if ((strcmp(argv[n], "-v") == 0) || (strcmp(argv[n], "--verbose") == 0)) { |
621 | global_verbose = 1; |
622 | } |
623 | else if ((strcmp(argv[n], "-f") == 0) || |
624 | (strcmp(argv[n], "--fbmode") == 0)) { |
625 | o->fbmode = 1; |
626 | } |
627 | else if ((strcmp(argv[n], "-x") == 0) || |
628 | (strcmp(argv[n], "--xorgmode") == 0) || |
629 | (strcmp(argv[n], "--xf86mode") == 0)) { |
630 | o->xorgmode = 1; |
631 | } |
632 | else { |
633 | goto bad_option; |
634 | } |
635 | |
636 | n++; |
637 | } |
638 | |
639 | |
640 | |
641 | |
642 | if (!o->fbmode && !o->xorgmode) |
643 | o->xorgmode = 1; |
644 | |
645 | return o; |
646 | |
647 | bad_option: |
648 | |
649 | fprintf(stderr__stderrp, "\n"); |
650 | fprintf(stderr__stderrp, "usage: %s x y refresh [-v|--verbose] " |
651 | "[-f|--fbmode] [-x|--xorgmode]\n", argv[0]); |
652 | |
653 | fprintf(stderr__stderrp, "\n"); |
654 | |
655 | fprintf(stderr__stderrp, " x : the desired horizontal " |
656 | "resolution (required)\n"); |
657 | fprintf(stderr__stderrp, " y : the desired vertical " |
658 | "resolution (required)\n"); |
659 | fprintf(stderr__stderrp, " refresh : the desired refresh " "rate (required)\n"); |
660 | fprintf(stderr__stderrp, " -v|--verbose : enable verbose printouts " |
661 | "(traces each step of the computation)\n"); |
662 | fprintf(stderr__stderrp, " -f|--fbmode : output an fbset(8)-style mode " |
663 | "description\n"); |
664 | fprintf(stderr__stderrp, " -x|--xorgmode : output an " __XSERVERNAME__"Xorg" "-style mode " |
665 | "description (this is the default\n" |
666 | " if no mode description is requested)\n"); |
667 | |
668 | fprintf(stderr__stderrp, "\n"); |
669 | |
670 | free(o); |
671 | return NULL((void *)0); |
672 | |
673 | } |
674 | |
675 | int |
676 | main(int argc, char *argv[]) |
677 | { |
678 | mode *m; |
679 | options *o; |
680 | |
681 | o = parse_command_line(argc, argv); |
682 | if (!o) |
| 1 | Assuming 'o' is non-null | |
|
| |
683 | exit(1); |
684 | |
685 | m = vert_refresh(o->x, o->y, o->v_freq, 0, 0); |
| |
| 13 | | Returned allocated memory | |
|
686 | if (!m) |
| |
687 | exit(1); |
688 | |
689 | if (o->xorgmode) |
| |
690 | print_xf86_mode(m); |
691 | |
692 | if (o->fbmode) |
| |
693 | print_fb_mode(m); |
694 | |
695 | return 0; |
| 17 | | Potential leak of memory pointed to by 'm' |
|
696 | |
697 | } |