edid-parse.c (19643B)
1/* 2 * Copyright 2007 Red Hat, Inc. 3 * 4 * Permission is hereby granted, free of charge, to any person obtaining a 5 * copy of this software and associated documentation files (the "Software"), 6 * to deal in the Software without restriction, including without limitation 7 * on the rights to use, copy, modify, merge, publish, distribute, sub 8 * license, and/or sell copies of the Software, and to permit persons to whom 9 * the Software is furnished to do so, subject to the following conditions: 10 * 11 * The above copyright notice and this permission notice (including the next 12 * paragraph) shall be included in all copies or substantial portions of the 13 * Software. 14 * 15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 17 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL 18 * THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER 19 * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 20 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 21 */ 22 23/* Author: Soren Sandmann <sandmann@redhat.com> */ 24 25#include "edid.h" 26#include <stdlib.h> 27#include <string.h> 28#include <math.h> 29#include <stdio.h> 30 31#define TRUE 1 32#define FALSE 0 33 34static int 35get_bit (int in, int bit) 36{ 37 return (in & (1 << bit)) >> bit; 38} 39 40static int 41get_bits (int in, int begin, int end) 42{ 43 int mask = (1 << (end - begin + 1)) - 1; 44 45 return (in >> begin) & mask; 46} 47 48static int 49decode_header (const uchar *edid) 50{ 51 if (memcmp (edid, "\x00\xff\xff\xff\xff\xff\xff\x00", 8) == 0) 52 return TRUE; 53 return FALSE; 54} 55 56static int 57decode_vendor_and_product_identification (const uchar *edid, MonitorInfo *info) 58{ 59 int is_model_year; 60 61 /* Manufacturer Code */ 62 info->manufacturer_code[0] = get_bits (edid[0x08], 2, 6); 63 info->manufacturer_code[1] = get_bits (edid[0x08], 0, 1) << 3; 64 info->manufacturer_code[1] |= get_bits (edid[0x09], 5, 7); 65 info->manufacturer_code[2] = get_bits (edid[0x09], 0, 4); 66 info->manufacturer_code[3] = '\0'; 67 68 info->manufacturer_code[0] += 'A' - 1; 69 info->manufacturer_code[1] += 'A' - 1; 70 info->manufacturer_code[2] += 'A' - 1; 71 72 /* Product Code */ 73 info->product_code = edid[0x0b] << 8 | edid[0x0a]; 74 75 /* Serial Number */ 76 info->serial_number = 77 edid[0x0c] | edid[0x0d] << 8 | edid[0x0e] << 16 | edid[0x0f] << 24; 78 79 /* Week and Year */ 80 is_model_year = FALSE; 81 switch (edid[0x10]) 82 { 83 case 0x00: 84 info->production_week = -1; 85 break; 86 87 case 0xff: 88 info->production_week = -1; 89 is_model_year = TRUE; 90 break; 91 92 default: 93 info->production_week = edid[0x10]; 94 break; 95 } 96 97 if (is_model_year) 98 { 99 info->production_year = -1; 100 info->model_year = 1990 + edid[0x11]; 101 } 102 else 103 { 104 info->production_year = 1990 + edid[0x11]; 105 info->model_year = -1; 106 } 107 108 return TRUE; 109} 110 111static int 112decode_edid_version (const uchar *edid, MonitorInfo *info) 113{ 114 info->major_version = edid[0x12]; 115 info->minor_version = edid[0x13]; 116 117 return TRUE; 118} 119 120static int 121decode_display_parameters (const uchar *edid, MonitorInfo *info) 122{ 123 /* Digital vs Analog */ 124 info->is_digital = get_bit (edid[0x14], 7); 125 126 if (info->is_digital) 127 { 128 int bits; 129 130 static const int bit_depth[8] = 131 { 132 -1, 6, 8, 10, 12, 14, 16, -1 133 }; 134 135 static const Interface interfaces[6] = 136 { 137 UNDEFINED, DVI, HDMI_A, HDMI_B, MDDI, DISPLAY_PORT 138 }; 139 140 bits = get_bits (edid[0x14], 4, 6); 141 info->digital.bits_per_primary = bit_depth[bits]; 142 143 bits = get_bits (edid[0x14], 0, 3); 144 145 if (bits <= 5) 146 info->digital.interface = interfaces[bits]; 147 else 148 info->digital.interface = UNDEFINED; 149 } 150 else 151 { 152 int bits = get_bits (edid[0x14], 5, 6); 153 154 static const double levels[][3] = 155 { 156 { 0.7, 0.3, 1.0 }, 157 { 0.714, 0.286, 1.0 }, 158 { 1.0, 0.4, 1.4 }, 159 { 0.7, 0.0, 0.7 }, 160 }; 161 162 info->analog.video_signal_level = levels[bits][0]; 163 info->analog.sync_signal_level = levels[bits][1]; 164 info->analog.total_signal_level = levels[bits][2]; 165 166 info->analog.blank_to_black = get_bit (edid[0x14], 4); 167 168 info->analog.separate_hv_sync = get_bit (edid[0x14], 3); 169 info->analog.composite_sync_on_h = get_bit (edid[0x14], 2); 170 info->analog.composite_sync_on_green = get_bit (edid[0x14], 1); 171 172 info->analog.serration_on_vsync = get_bit (edid[0x14], 0); 173 } 174 175 /* Screen Size / Aspect Ratio */ 176 if (edid[0x15] == 0 && edid[0x16] == 0) 177 { 178 info->width_mm = -1; 179 info->height_mm = -1; 180 info->aspect_ratio = -1.0; 181 } 182 else if (edid[0x16] == 0) 183 { 184 info->width_mm = -1; 185 info->height_mm = -1; 186 info->aspect_ratio = 100.0 / (edid[0x15] + 99); 187 } 188 else if (edid[0x15] == 0) 189 { 190 info->width_mm = -1; 191 info->height_mm = -1; 192 info->aspect_ratio = 100.0 / (edid[0x16] + 99); 193 info->aspect_ratio = 1/info->aspect_ratio; /* portrait */ 194 } 195 else 196 { 197 info->width_mm = 10 * edid[0x15]; 198 info->height_mm = 10 * edid[0x16]; 199 } 200 201 /* Gamma */ 202 if (edid[0x17] == 0xFF) 203 info->gamma = -1.0; 204 else 205 info->gamma = (edid[0x17] + 100.0) / 100.0; 206 207 /* Features */ 208 info->standby = get_bit (edid[0x18], 7); 209 info->suspend = get_bit (edid[0x18], 6); 210 info->active_off = get_bit (edid[0x18], 5); 211 212 if (info->is_digital) 213 { 214 info->digital.rgb444 = TRUE; 215 if (get_bit (edid[0x18], 3)) 216 info->digital.ycrcb444 = 1; 217 if (get_bit (edid[0x18], 4)) 218 info->digital.ycrcb422 = 1; 219 } 220 else 221 { 222 int bits = get_bits (edid[0x18], 3, 4); 223 ColorType color_type[4] = 224 { 225 MONOCHROME, RGB, OTHER_COLOR, UNDEFINED_COLOR 226 }; 227 228 info->analog.color_type = color_type[bits]; 229 } 230 231 info->srgb_is_standard = get_bit (edid[0x18], 2); 232 233 /* In 1.3 this is called "has preferred timing" */ 234 info->preferred_timing_includes_native = get_bit (edid[0x18], 1); 235 236 /* FIXME: In 1.3 this indicates whether the monitor accepts GTF */ 237 info->continuous_frequency = get_bit (edid[0x18], 0); 238 return TRUE; 239} 240 241static double 242decode_fraction (int high, int low) 243{ 244 double result = 0.0; 245 int i; 246 247 high = (high << 2) | low; 248 249 for (i = 0; i < 10; ++i) 250 result += get_bit (high, i) * pow (2, i - 10); 251 252 return result; 253} 254 255static int 256decode_color_characteristics (const uchar *edid, MonitorInfo *info) 257{ 258 info->red_x = decode_fraction (edid[0x1b], get_bits (edid[0x19], 6, 7)); 259 info->red_y = decode_fraction (edid[0x1c], get_bits (edid[0x19], 5, 4)); 260 info->green_x = decode_fraction (edid[0x1d], get_bits (edid[0x19], 2, 3)); 261 info->green_y = decode_fraction (edid[0x1e], get_bits (edid[0x19], 0, 1)); 262 info->blue_x = decode_fraction (edid[0x1f], get_bits (edid[0x1a], 6, 7)); 263 info->blue_y = decode_fraction (edid[0x20], get_bits (edid[0x1a], 4, 5)); 264 info->white_x = decode_fraction (edid[0x21], get_bits (edid[0x1a], 2, 3)); 265 info->white_y = decode_fraction (edid[0x22], get_bits (edid[0x1a], 0, 1)); 266 267 return TRUE; 268} 269 270static int 271decode_established_timings (const uchar *edid, MonitorInfo *info) 272{ 273 static const Timing established[][8] = 274 { 275 { 276 { 800, 600, 60 }, 277 { 800, 600, 56 }, 278 { 640, 480, 75 }, 279 { 640, 480, 72 }, 280 { 640, 480, 67 }, 281 { 640, 480, 60 }, 282 { 720, 400, 88 }, 283 { 720, 400, 70 } 284 }, 285 { 286 { 1280, 1024, 75 }, 287 { 1024, 768, 75 }, 288 { 1024, 768, 70 }, 289 { 1024, 768, 60 }, 290 { 1024, 768, 87 }, 291 { 832, 624, 75 }, 292 { 800, 600, 75 }, 293 { 800, 600, 72 } 294 }, 295 { 296 { 0, 0, 0 }, 297 { 0, 0, 0 }, 298 { 0, 0, 0 }, 299 { 0, 0, 0 }, 300 { 0, 0, 0 }, 301 { 0, 0, 0 }, 302 { 0, 0, 0 }, 303 { 1152, 870, 75 } 304 }, 305 }; 306 307 int i, j, idx; 308 309 idx = 0; 310 for (i = 0; i < 3; ++i) 311 { 312 for (j = 0; j < 8; ++j) 313 { 314 int byte = edid[0x23 + i]; 315 316 if (get_bit (byte, j) && established[i][j].frequency != 0) 317 info->established[idx++] = established[i][j]; 318 } 319 } 320 return TRUE; 321} 322 323static int 324decode_standard_timings (const uchar *edid, MonitorInfo *info) 325{ 326 int i; 327 328 for (i = 0; i < 8; i++) 329 { 330 int first = edid[0x26 + 2 * i]; 331 int second = edid[0x27 + 2 * i]; 332 333 if (first != 0x01 && second != 0x01) 334 { 335 int w = 8 * (first + 31); 336 int h = 0; 337 338 switch (get_bits (second, 6, 7)) 339 { 340 case 0x00: h = (w / 16) * 10; break; 341 case 0x01: h = (w / 4) * 3; break; 342 case 0x02: h = (w / 5) * 4; break; 343 case 0x03: h = (w / 16) * 9; break; 344 } 345 346 info->standard[i].width = w; 347 info->standard[i].height = h; 348 info->standard[i].frequency = get_bits (second, 0, 5) + 60; 349 } 350 } 351 352 return TRUE; 353} 354 355static void 356decode_lf_string (const uchar *s, int n_chars, char *result) 357{ 358 int i; 359 for (i = 0; i < n_chars; ++i) 360 { 361 if (s[i] == 0x0a) 362 { 363 *result++ = '\0'; 364 break; 365 } 366 else if (s[i] == 0x00) 367 { 368 /* Convert embedded 0's to spaces */ 369 *result++ = ' '; 370 } 371 else 372 { 373 *result++ = s[i]; 374 } 375 } 376} 377 378static void 379decode_display_descriptor (const uchar *desc, 380 MonitorInfo *info) 381{ 382 switch (desc[0x03]) 383 { 384 case 0xFC: 385 decode_lf_string (desc + 5, 13, info->dsc_product_name); 386 break; 387 case 0xFF: 388 decode_lf_string (desc + 5, 13, info->dsc_serial_number); 389 break; 390 case 0xFE: 391 decode_lf_string (desc + 5, 13, info->dsc_string); 392 break; 393 case 0xFD: 394 /* Range Limits */ 395 break; 396 case 0xFB: 397 /* Color Point */ 398 break; 399 case 0xFA: 400 /* Timing Identifications */ 401 break; 402 case 0xF9: 403 /* Color Management */ 404 break; 405 case 0xF8: 406 /* Timing Codes */ 407 break; 408 case 0xF7: 409 /* Established Timings */ 410 break; 411 case 0x10: 412 break; 413 } 414} 415 416static void 417decode_detailed_timing (const uchar *timing, 418 DetailedTiming *detailed) 419{ 420 int bits; 421 StereoType stereo[] = 422 { 423 NO_STEREO, NO_STEREO, FIELD_RIGHT, FIELD_LEFT, 424 TWO_WAY_RIGHT_ON_EVEN, TWO_WAY_LEFT_ON_EVEN, 425 FOUR_WAY_INTERLEAVED, SIDE_BY_SIDE 426 }; 427 428 detailed->pixel_clock = (timing[0x00] | timing[0x01] << 8) * 10000; 429 detailed->h_addr = timing[0x02] | ((timing[0x04] & 0xf0) << 4); 430 detailed->h_blank = timing[0x03] | ((timing[0x04] & 0x0f) << 8); 431 detailed->v_addr = timing[0x05] | ((timing[0x07] & 0xf0) << 4); 432 detailed->v_blank = timing[0x06] | ((timing[0x07] & 0x0f) << 8); 433 detailed->h_front_porch = timing[0x08] | get_bits (timing[0x0b], 6, 7) << 8; 434 detailed->h_sync = timing[0x09] | get_bits (timing[0x0b], 4, 5) << 8; 435 detailed->v_front_porch = 436 get_bits (timing[0x0a], 4, 7) | get_bits (timing[0x0b], 2, 3) << 4; 437 detailed->v_sync = 438 get_bits (timing[0x0a], 0, 3) | get_bits (timing[0x0b], 0, 1) << 4; 439 detailed->width_mm = timing[0x0c] | get_bits (timing[0x0e], 4, 7) << 8; 440 detailed->height_mm = timing[0x0d] | get_bits (timing[0x0e], 0, 3) << 8; 441 detailed->right_border = timing[0x0f]; 442 detailed->top_border = timing[0x10]; 443 444 detailed->interlaced = get_bit (timing[0x11], 7); 445 446 /* Stereo */ 447 bits = get_bits (timing[0x11], 5, 6) << 1 | get_bit (timing[0x11], 0); 448 detailed->stereo = stereo[bits]; 449 450 /* Sync */ 451 bits = timing[0x11]; 452 453 detailed->digital_sync = get_bit (bits, 4); 454 if (detailed->digital_sync) 455 { 456 detailed->digital.composite = !get_bit (bits, 3); 457 458 if (detailed->digital.composite) 459 { 460 detailed->digital.serrations = get_bit (bits, 2); 461 detailed->digital.negative_vsync = FALSE; 462 } 463 else 464 { 465 detailed->digital.serrations = FALSE; 466 detailed->digital.negative_vsync = !get_bit (bits, 2); 467 } 468 469 detailed->digital.negative_hsync = !get_bit (bits, 0); 470 } 471 else 472 { 473 detailed->analog.bipolar = get_bit (bits, 3); 474 detailed->analog.serrations = get_bit (bits, 2); 475 detailed->analog.sync_on_green = !get_bit (bits, 1); 476 } 477} 478 479static int 480decode_descriptors (const uchar *edid, MonitorInfo *info) 481{ 482 int i; 483 int timing_idx; 484 485 timing_idx = 0; 486 487 for (i = 0; i < 4; ++i) 488 { 489 int index = 0x36 + i * 18; 490 491 if (edid[index + 0] == 0x00 && edid[index + 1] == 0x00) 492 { 493 decode_display_descriptor (edid + index, info); 494 } 495 else 496 { 497 decode_detailed_timing ( 498 edid + index, &(info->detailed_timings[timing_idx++])); 499 } 500 } 501 502 info->n_detailed_timings = timing_idx; 503 504 return TRUE; 505} 506 507static void 508decode_check_sum (const uchar *edid, 509 MonitorInfo *info) 510{ 511 int i; 512 uchar check = 0; 513 514 for (i = 0; i < 128; ++i) 515 check += edid[i]; 516 517 info->checksum = check; 518} 519 520MonitorInfo * 521decode_edid (const uchar *edid) 522{ 523 MonitorInfo *info = calloc (1, sizeof (MonitorInfo)); 524 525 decode_check_sum (edid, info); 526 527 if (!decode_header (edid) || 528 !decode_vendor_and_product_identification (edid, info) || 529 !decode_edid_version (edid, info) || 530 !decode_display_parameters (edid, info) || 531 !decode_color_characteristics (edid, info) || 532 !decode_established_timings (edid, info) || 533 !decode_standard_timings (edid, info) || 534 !decode_descriptors (edid, info)) { 535 free(info); 536 return NULL; 537 } 538 539 return info; 540} 541 542static const char * 543yesno (int v) 544{ 545 return v? "yes" : "no"; 546} 547 548void 549dump_monitor_info (MonitorInfo *info) 550{ 551 int i; 552 553 printf ("Checksum: %d (%s)\n", 554 info->checksum, info->checksum? "incorrect" : "correct"); 555 printf ("Manufacturer Code: %s\n", info->manufacturer_code); 556 printf ("Product Code: 0x%x\n", info->product_code); 557 printf ("Serial Number: %u\n", info->serial_number); 558 559 if (info->production_week != -1) 560 printf ("Production Week: %d\n", info->production_week); 561 else 562 printf ("Production Week: unspecified\n"); 563 564 if (info->production_year != -1) 565 printf ("Production Year: %d\n", info->production_year); 566 else 567 printf ("Production Year: unspecified\n"); 568 569 if (info->model_year != -1) 570 printf ("Model Year: %d\n", info->model_year); 571 else 572 printf ("Model Year: unspecified\n"); 573 574 printf ("EDID revision: %d.%d\n", info->major_version, info->minor_version); 575 576 printf ("Display is %s\n", info->is_digital? "digital" : "analog"); 577 if (info->is_digital) 578 { 579 const char *interface; 580 if (info->digital.bits_per_primary != -1) 581 printf ("Bits Per Primary: %d\n", info->digital.bits_per_primary); 582 else 583 printf ("Bits Per Primary: undefined\n"); 584 585 switch (info->digital.interface) 586 { 587 case DVI: interface = "DVI"; break; 588 case HDMI_A: interface = "HDMI-a"; break; 589 case HDMI_B: interface = "HDMI-b"; break; 590 case MDDI: interface = "MDDI"; break; 591 case DISPLAY_PORT: interface = "DisplayPort"; break; 592 case UNDEFINED: interface = "undefined"; break; 593 default: interface = "unknown"; break; 594 } 595 printf ("Interface: %s\n", interface); 596 597 printf ("RGB 4:4:4: %s\n", yesno (info->digital.rgb444)); 598 printf ("YCrCb 4:4:4: %s\n", yesno (info->digital.ycrcb444)); 599 printf ("YCrCb 4:2:2: %s\n", yesno (info->digital.ycrcb422)); 600 } 601 else 602 { 603 const char *s; 604 printf ("Video Signal Level: %f\n", info->analog.video_signal_level); 605 printf ("Sync Signal Level: %f\n", info->analog.sync_signal_level); 606 printf ("Total Signal Level: %f\n", info->analog.total_signal_level); 607 608 printf ("Blank to Black: %s\n", 609 yesno (info->analog.blank_to_black)); 610 printf ("Separate HV Sync: %s\n", 611 yesno (info->analog.separate_hv_sync)); 612 printf ("Composite Sync on H: %s\n", 613 yesno (info->analog.composite_sync_on_h)); 614 printf ("Serration on VSync: %s\n", 615 yesno (info->analog.serration_on_vsync)); 616 617 switch (info->analog.color_type) 618 { 619 case UNDEFINED_COLOR: s = "undefined"; break; 620 case MONOCHROME: s = "monochrome"; break; 621 case RGB: s = "rgb"; break; 622 case OTHER_COLOR: s = "other color"; break; 623 default: s = "unknown"; break; 624 }; 625 626 printf ("Color: %s\n", s); 627 } 628 629 if (info->width_mm == -1) 630 printf ("Width: undefined\n"); 631 else 632 printf ("Width: %d mm\n", info->width_mm); 633 634 if (info->height_mm == -1) 635 printf ("Height: undefined\n"); 636 else 637 printf ("Height: %d mm\n", info->height_mm); 638 639 if (info->aspect_ratio > 0) 640 printf ("Aspect Ratio: %f\n", info->aspect_ratio); 641 else 642 printf ("Aspect Ratio: undefined\n"); 643 644 if (info->gamma >= 0) 645 printf ("Gamma: %f\n", info->gamma); 646 else 647 printf ("Gamma: undefined\n"); 648 649 printf ("Standby: %s\n", yesno (info->standby)); 650 printf ("Suspend: %s\n", yesno (info->suspend)); 651 printf ("Active Off: %s\n", yesno (info->active_off)); 652 653 printf ("SRGB is Standard: %s\n", yesno (info->srgb_is_standard)); 654 printf ("Preferred Timing Includes Native: %s\n", 655 yesno (info->preferred_timing_includes_native)); 656 printf ("Continuous Frequency: %s\n", yesno (info->continuous_frequency)); 657 658 printf ("Red X: %f\n", info->red_x); 659 printf ("Red Y: %f\n", info->red_y); 660 printf ("Green X: %f\n", info->green_x); 661 printf ("Green Y: %f\n", info->green_y); 662 printf ("Blue X: %f\n", info->blue_x); 663 printf ("Blue Y: %f\n", info->blue_y); 664 printf ("White X: %f\n", info->white_x); 665 printf ("White Y: %f\n", info->white_y); 666 667 printf ("Established Timings:\n"); 668 669 for (i = 0; i < 24; ++i) 670 { 671 Timing *timing = &(info->established[i]); 672 673 if (timing->frequency == 0) 674 break; 675 676 printf (" %d x %d @ %d Hz\n", 677 timing->width, timing->height, timing->frequency); 678 679 } 680 681 printf ("Standard Timings:\n"); 682 for (i = 0; i < 8; ++i) 683 { 684 Timing *timing = &(info->standard[i]); 685 686 if (timing->frequency == 0) 687 break; 688 689 printf (" %d x %d @ %d Hz\n", 690 timing->width, timing->height, timing->frequency); 691 } 692 693 for (i = 0; i < info->n_detailed_timings; ++i) 694 { 695 DetailedTiming *timing = &(info->detailed_timings[i]); 696 const char *s; 697 698 printf ("Timing%s: \n", 699 (i == 0 && info->preferred_timing_includes_native)? 700 " (Preferred)" : ""); 701 printf (" Pixel Clock: %d\n", timing->pixel_clock); 702 printf (" H Addressable: %d\n", timing->h_addr); 703 printf (" H Blank: %d\n", timing->h_blank); 704 printf (" H Front Porch: %d\n", timing->h_front_porch); 705 printf (" H Sync: %d\n", timing->h_sync); 706 printf (" V Addressable: %d\n", timing->v_addr); 707 printf (" V Blank: %d\n", timing->v_blank); 708 printf (" V Front Porch: %d\n", timing->v_front_porch); 709 printf (" V Sync: %d\n", timing->v_sync); 710 printf (" Width: %d mm\n", timing->width_mm); 711 printf (" Height: %d mm\n", timing->height_mm); 712 printf (" Right Border: %d\n", timing->right_border); 713 printf (" Top Border: %d\n", timing->top_border); 714 switch (timing->stereo) 715 { 716 default: 717 case NO_STEREO: s = "No Stereo"; break; 718 case FIELD_RIGHT: s = "Field Sequential, Right on Sync"; break; 719 case FIELD_LEFT: s = "Field Sequential, Left on Sync"; break; 720 case TWO_WAY_RIGHT_ON_EVEN: s = "Two-way, Right on Even"; break; 721 case TWO_WAY_LEFT_ON_EVEN: s = "Two-way, Left on Even"; break; 722 case FOUR_WAY_INTERLEAVED: s = "Four-way Interleaved"; break; 723 case SIDE_BY_SIDE: s = "Side-by-Side"; break; 724 } 725 printf (" Stereo: %s\n", s); 726 727 if (timing->digital_sync) 728 { 729 printf (" Digital Sync:\n"); 730 printf (" composite: %s\n", yesno (timing->digital.composite)); 731 printf (" serrations: %s\n", yesno (timing->digital.serrations)); 732 printf (" negative vsync: %s\n", 733 yesno (timing->digital.negative_vsync)); 734 printf (" negative hsync: %s\n", 735 yesno (timing->digital.negative_hsync)); 736 } 737 else 738 { 739 printf (" Analog Sync:\n"); 740 printf (" bipolar: %s\n", yesno (timing->analog.bipolar)); 741 printf (" serrations: %s\n", yesno (timing->analog.serrations)); 742 printf (" sync on green: %s\n", yesno ( 743 timing->analog.sync_on_green)); 744 } 745 } 746 747 printf ("Detailed Product information:\n"); 748 printf (" Product Name: %s\n", info->dsc_product_name); 749 printf (" Serial Number: %s\n", info->dsc_serial_number); 750 printf (" Unspecified String: %s\n", info->dsc_string); 751} 752