src/video/x11/edid-parse.c
author Philipp Wiesemann <philipp.wiesemann@arcor.de>
Sun, 30 Oct 2016 21:01:33 +0100
changeset 10563 e3d84016cb79
parent 10030 061b1b467bd3
child 10701 62f7dd0acd13
permissions -rw-r--r--
Fixed outdated info in README.
     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 #include "../../SDL_internal.h"
    25 #include "SDL_stdinc.h"
    26 
    27 #include "edid.h"
    28 #include <stdlib.h>
    29 #include <string.h>
    30 #include <math.h>
    31 #include <stdio.h>
    32 
    33 #define TRUE 1
    34 #define FALSE 0
    35 
    36 static int
    37 get_bit (int in, int bit)
    38 {
    39     return (in & (1 << bit)) >> bit;
    40 }
    41 
    42 static int
    43 get_bits (int in, int begin, int end)
    44 {
    45     int mask = (1 << (end - begin + 1)) - 1;
    46     
    47     return (in >> begin) & mask;
    48 }
    49 
    50 static int
    51 decode_header (const uchar *edid)
    52 {
    53     if (memcmp (edid, "\x00\xff\xff\xff\xff\xff\xff\x00", 8) == 0)
    54 	return TRUE;
    55     return FALSE;
    56 }
    57 
    58 static int
    59 decode_vendor_and_product_identification (const uchar *edid, MonitorInfo *info)
    60 {
    61     int is_model_year;
    62     
    63     /* Manufacturer Code */
    64     info->manufacturer_code[0]  = get_bits (edid[0x08], 2, 6);
    65     info->manufacturer_code[1]  = get_bits (edid[0x08], 0, 1) << 3;
    66     info->manufacturer_code[1] |= get_bits (edid[0x09], 5, 7);
    67     info->manufacturer_code[2]  = get_bits (edid[0x09], 0, 4);
    68     info->manufacturer_code[3]  = '\0';
    69     
    70     info->manufacturer_code[0] += 'A' - 1;
    71     info->manufacturer_code[1] += 'A' - 1;
    72     info->manufacturer_code[2] += 'A' - 1;
    73 
    74     /* Product Code */
    75     info->product_code = edid[0x0b] << 8 | edid[0x0a];
    76 
    77     /* Serial Number */
    78     info->serial_number =
    79 	edid[0x0c] | edid[0x0d] << 8 | edid[0x0e] << 16 | edid[0x0f] << 24;
    80 
    81     /* Week and Year */
    82     is_model_year = FALSE;
    83     switch (edid[0x10])
    84     {
    85     case 0x00:
    86 	info->production_week = -1;
    87 	break;
    88 
    89     case 0xff:
    90 	info->production_week = -1;
    91 	is_model_year = TRUE;
    92 	break;
    93 
    94     default:
    95 	info->production_week = edid[0x10];
    96 	break;
    97     }
    98 
    99     if (is_model_year)
   100     {
   101 	info->production_year = -1;
   102 	info->model_year = 1990 + edid[0x11];
   103     }
   104     else
   105     {
   106 	info->production_year = 1990 + edid[0x11];
   107 	info->model_year = -1;
   108     }
   109 
   110     return TRUE;
   111 }
   112 
   113 static int
   114 decode_edid_version (const uchar *edid, MonitorInfo *info)
   115 {
   116     info->major_version = edid[0x12];
   117     info->minor_version = edid[0x13];
   118 
   119     return TRUE;
   120 }
   121 
   122 static int
   123 decode_display_parameters (const uchar *edid, MonitorInfo *info)
   124 {
   125     /* Digital vs Analog */
   126     info->is_digital = get_bit (edid[0x14], 7);
   127 
   128     if (info->is_digital)
   129     {
   130 	int bits;
   131 	
   132 	static const int bit_depth[8] =
   133 	{
   134 	    -1, 6, 8, 10, 12, 14, 16, -1
   135 	};
   136 
   137 	static const Interface interfaces[6] =
   138 	{
   139 	    UNDEFINED, DVI, HDMI_A, HDMI_B, MDDI, DISPLAY_PORT
   140 	};
   141 
   142 	bits = get_bits (edid[0x14], 4, 6);
   143 	info->digital.bits_per_primary = bit_depth[bits];
   144 
   145 	bits = get_bits (edid[0x14], 0, 3);
   146 	
   147 	if (bits <= 5)
   148 	    info->digital.interface = interfaces[bits];
   149 	else
   150 	    info->digital.interface = UNDEFINED;
   151     }
   152     else
   153     {
   154 	int bits = get_bits (edid[0x14], 5, 6);
   155 	
   156 	static const double levels[][3] =
   157 	{
   158 	    { 0.7,   0.3,    1.0 },
   159 	    { 0.714, 0.286,  1.0 },
   160 	    { 1.0,   0.4,    1.4 },
   161 	    { 0.7,   0.0,    0.7 },
   162 	};
   163 
   164 	info->analog.video_signal_level = levels[bits][0];
   165 	info->analog.sync_signal_level = levels[bits][1];
   166 	info->analog.total_signal_level = levels[bits][2];
   167 
   168 	info->analog.blank_to_black = get_bit (edid[0x14], 4);
   169 
   170 	info->analog.separate_hv_sync = get_bit (edid[0x14], 3);
   171 	info->analog.composite_sync_on_h = get_bit (edid[0x14], 2);
   172 	info->analog.composite_sync_on_green = get_bit (edid[0x14], 1);
   173 
   174 	info->analog.serration_on_vsync = get_bit (edid[0x14], 0);
   175     }
   176 
   177     /* Screen Size / Aspect Ratio */
   178     if (edid[0x15] == 0 && edid[0x16] == 0)
   179     {
   180 	info->width_mm = -1;
   181 	info->height_mm = -1;
   182 	info->aspect_ratio = -1.0;
   183     }
   184     else if (edid[0x16] == 0)
   185     {
   186 	info->width_mm = -1;
   187 	info->height_mm = -1; 
   188 	info->aspect_ratio = 100.0 / (edid[0x15] + 99);
   189     }
   190     else if (edid[0x15] == 0)
   191     {
   192 	info->width_mm = -1;
   193 	info->height_mm = -1;
   194 	info->aspect_ratio = 100.0 / (edid[0x16] + 99);
   195 	info->aspect_ratio = 1/info->aspect_ratio; /* portrait */
   196     }
   197     else
   198     {
   199 	info->width_mm = 10 * edid[0x15];
   200 	info->height_mm = 10 * edid[0x16];
   201     }
   202 
   203     /* Gamma */
   204     if (edid[0x17] == 0xFF)
   205 	info->gamma = -1.0;
   206     else
   207 	info->gamma = (edid[0x17] + 100.0) / 100.0;
   208 
   209     /* Features */
   210     info->standby = get_bit (edid[0x18], 7);
   211     info->suspend = get_bit (edid[0x18], 6);
   212     info->active_off = get_bit (edid[0x18], 5);
   213 
   214     if (info->is_digital)
   215     {
   216 	info->digital.rgb444 = TRUE;
   217 	if (get_bit (edid[0x18], 3))
   218 	    info->digital.ycrcb444 = 1;
   219 	if (get_bit (edid[0x18], 4))
   220 	    info->digital.ycrcb422 = 1;
   221     }
   222     else
   223     {
   224 	int bits = get_bits (edid[0x18], 3, 4);
   225 	ColorType color_type[4] =
   226 	{
   227 	    MONOCHROME, RGB, OTHER_COLOR, UNDEFINED_COLOR
   228 	};
   229 
   230 	info->analog.color_type = color_type[bits];
   231     }
   232 
   233     info->srgb_is_standard = get_bit (edid[0x18], 2);
   234 
   235     /* In 1.3 this is called "has preferred timing" */
   236     info->preferred_timing_includes_native = get_bit (edid[0x18], 1);
   237 
   238     /* FIXME: In 1.3 this indicates whether the monitor accepts GTF */
   239     info->continuous_frequency = get_bit (edid[0x18], 0);
   240     return TRUE;
   241 }
   242 
   243 static double
   244 decode_fraction (int high, int low)
   245 {
   246     double result = 0.0;
   247     int i;
   248 
   249     high = (high << 2) | low;
   250 
   251     for (i = 0; i < 10; ++i)
   252 	result += get_bit (high, i) * SDL_pow (2, i - 10);
   253 
   254     return result;
   255 }
   256 
   257 static int
   258 decode_color_characteristics (const uchar *edid, MonitorInfo *info)
   259 {
   260     info->red_x = decode_fraction (edid[0x1b], get_bits (edid[0x19], 6, 7));
   261     info->red_y = decode_fraction (edid[0x1c], get_bits (edid[0x19], 5, 4));
   262     info->green_x = decode_fraction (edid[0x1d], get_bits (edid[0x19], 2, 3));
   263     info->green_y = decode_fraction (edid[0x1e], get_bits (edid[0x19], 0, 1));
   264     info->blue_x = decode_fraction (edid[0x1f], get_bits (edid[0x1a], 6, 7));
   265     info->blue_y = decode_fraction (edid[0x20], get_bits (edid[0x1a], 4, 5));
   266     info->white_x = decode_fraction (edid[0x21], get_bits (edid[0x1a], 2, 3));
   267     info->white_y = decode_fraction (edid[0x22], get_bits (edid[0x1a], 0, 1));
   268 
   269     return TRUE;
   270 }
   271 
   272 static int
   273 decode_established_timings (const uchar *edid, MonitorInfo *info)
   274 {
   275     static const Timing established[][8] = 
   276     {
   277 	{
   278 	    { 800, 600, 60 },
   279 	    { 800, 600, 56 },
   280 	    { 640, 480, 75 },
   281 	    { 640, 480, 72 },
   282 	    { 640, 480, 67 },
   283 	    { 640, 480, 60 },
   284 	    { 720, 400, 88 },
   285 	    { 720, 400, 70 }
   286 	},
   287 	{
   288 	    { 1280, 1024, 75 },
   289 	    { 1024, 768, 75 },
   290 	    { 1024, 768, 70 },
   291 	    { 1024, 768, 60 },
   292 	    { 1024, 768, 87 },
   293 	    { 832, 624, 75 },
   294 	    { 800, 600, 75 },
   295 	    { 800, 600, 72 }
   296 	},
   297 	{
   298 	    { 0, 0, 0 },
   299 	    { 0, 0, 0 },
   300 	    { 0, 0, 0 },
   301 	    { 0, 0, 0 },
   302 	    { 0, 0, 0 },
   303 	    { 0, 0, 0 },
   304 	    { 0, 0, 0 },
   305 	    { 1152, 870, 75 }
   306 	},
   307     };
   308 
   309     int i, j, idx;
   310 
   311     idx = 0;
   312     for (i = 0; i < 3; ++i)
   313     {
   314 	for (j = 0; j < 8; ++j)
   315 	{
   316 	    int byte = edid[0x23 + i];
   317 
   318 	    if (get_bit (byte, j) && established[i][j].frequency != 0)
   319 		info->established[idx++] = established[i][j];
   320 	}
   321     }
   322     return TRUE;
   323 }
   324 
   325 static int
   326 decode_standard_timings (const uchar *edid, MonitorInfo *info)
   327 {
   328     int i;
   329     
   330     for (i = 0; i < 8; i++)
   331     {
   332 	int first = edid[0x26 + 2 * i];
   333 	int second = edid[0x27 + 2 * i];
   334 
   335 	if (first != 0x01 && second != 0x01)
   336 	{
   337 	    int w = 8 * (first + 31);
   338 	    int h = 0;
   339 
   340 	    switch (get_bits (second, 6, 7))
   341 	    {
   342 	    case 0x00: h = (w / 16) * 10; break;
   343 	    case 0x01: h = (w / 4) * 3; break;
   344 	    case 0x02: h = (w / 5) * 4; break;
   345 	    case 0x03: h = (w / 16) * 9; break;
   346 	    }
   347 
   348 	    info->standard[i].width = w;
   349 	    info->standard[i].height = h;
   350 	    info->standard[i].frequency = get_bits (second, 0, 5) + 60;
   351 	}
   352     }
   353     
   354     return TRUE;
   355 }
   356 
   357 static void
   358 decode_lf_string (const uchar *s, int n_chars, char *result)
   359 {
   360     int i;
   361     for (i = 0; i < n_chars; ++i)
   362     {
   363 	if (s[i] == 0x0a)
   364 	{
   365 	    *result++ = '\0';
   366 	    break;
   367 	}
   368 	else if (s[i] == 0x00)
   369 	{
   370 	    /* Convert embedded 0's to spaces */
   371 	    *result++ = ' ';
   372 	}
   373 	else
   374 	{
   375 	    *result++ = s[i];
   376 	}
   377     }
   378 }
   379 
   380 static void
   381 decode_display_descriptor (const uchar *desc,
   382 			   MonitorInfo *info)
   383 {
   384     switch (desc[0x03])
   385     {
   386     case 0xFC:
   387 	decode_lf_string (desc + 5, 13, info->dsc_product_name);
   388 	break;
   389     case 0xFF:
   390 	decode_lf_string (desc + 5, 13, info->dsc_serial_number);
   391 	break;
   392     case 0xFE:
   393 	decode_lf_string (desc + 5, 13, info->dsc_string);
   394 	break;
   395     case 0xFD:
   396 	/* Range Limits */
   397 	break;
   398     case 0xFB:
   399 	/* Color Point */
   400 	break;
   401     case 0xFA:
   402 	/* Timing Identifications */
   403 	break;
   404     case 0xF9:
   405 	/* Color Management */
   406 	break;
   407     case 0xF8:
   408 	/* Timing Codes */
   409 	break;
   410     case 0xF7:
   411 	/* Established Timings */
   412 	break;
   413     case 0x10:
   414 	break;
   415     }
   416 }
   417 
   418 static void
   419 decode_detailed_timing (const uchar *timing,
   420 			DetailedTiming *detailed)
   421 {
   422     int bits;
   423     StereoType stereo[] =
   424     {
   425 	NO_STEREO, NO_STEREO, FIELD_RIGHT, FIELD_LEFT,
   426 	TWO_WAY_RIGHT_ON_EVEN, TWO_WAY_LEFT_ON_EVEN,
   427 	FOUR_WAY_INTERLEAVED, SIDE_BY_SIDE
   428     };
   429     
   430     detailed->pixel_clock = (timing[0x00] | timing[0x01] << 8) * 10000;
   431     detailed->h_addr = timing[0x02] | ((timing[0x04] & 0xf0) << 4);
   432     detailed->h_blank = timing[0x03] | ((timing[0x04] & 0x0f) << 8);
   433     detailed->v_addr = timing[0x05] | ((timing[0x07] & 0xf0) << 4);
   434     detailed->v_blank = timing[0x06] | ((timing[0x07] & 0x0f) << 8);
   435     detailed->h_front_porch = timing[0x08] | get_bits (timing[0x0b], 6, 7) << 8;
   436     detailed->h_sync = timing[0x09] | get_bits (timing[0x0b], 4, 5) << 8;
   437     detailed->v_front_porch =
   438 	get_bits (timing[0x0a], 4, 7) | get_bits (timing[0x0b], 2, 3) << 4;
   439     detailed->v_sync =
   440 	get_bits (timing[0x0a], 0, 3) | get_bits (timing[0x0b], 0, 1) << 4;
   441     detailed->width_mm =  timing[0x0c] | get_bits (timing[0x0e], 4, 7) << 8;
   442     detailed->height_mm = timing[0x0d] | get_bits (timing[0x0e], 0, 3) << 8;
   443     detailed->right_border = timing[0x0f];
   444     detailed->top_border = timing[0x10];
   445 
   446     detailed->interlaced = get_bit (timing[0x11], 7);
   447 
   448     /* Stereo */
   449     bits = get_bits (timing[0x11], 5, 6) << 1 | get_bit (timing[0x11], 0);
   450     detailed->stereo = stereo[bits];
   451 
   452     /* Sync */
   453     bits = timing[0x11];
   454 
   455     detailed->digital_sync = get_bit (bits, 4);
   456     if (detailed->digital_sync)
   457     {
   458 	detailed->digital.composite = !get_bit (bits, 3);
   459 
   460 	if (detailed->digital.composite)
   461 	{
   462 	    detailed->digital.serrations = get_bit (bits, 2);
   463 	    detailed->digital.negative_vsync = FALSE;
   464 	}
   465 	else
   466 	{
   467 	    detailed->digital.serrations = FALSE;
   468 	    detailed->digital.negative_vsync = !get_bit (bits, 2);
   469 	}
   470 
   471 	detailed->digital.negative_hsync = !get_bit (bits, 0);
   472     }
   473     else
   474     {
   475 	detailed->analog.bipolar = get_bit (bits, 3);
   476 	detailed->analog.serrations = get_bit (bits, 2);
   477 	detailed->analog.sync_on_green = !get_bit (bits, 1);
   478     }
   479 }
   480 
   481 static int
   482 decode_descriptors (const uchar *edid, MonitorInfo *info)
   483 {
   484     int i;
   485     int timing_idx;
   486     
   487     timing_idx = 0;
   488     
   489     for (i = 0; i < 4; ++i)
   490     {
   491 	int index = 0x36 + i * 18;
   492 
   493 	if (edid[index + 0] == 0x00 && edid[index + 1] == 0x00)
   494 	{
   495 	    decode_display_descriptor (edid + index, info);
   496 	}
   497 	else
   498 	{
   499 	    decode_detailed_timing (
   500 		edid + index, &(info->detailed_timings[timing_idx++]));
   501 	}
   502     }
   503 
   504     info->n_detailed_timings = timing_idx;
   505 
   506     return TRUE;
   507 }
   508 
   509 static void
   510 decode_check_sum (const uchar *edid,
   511 		  MonitorInfo *info)
   512 {
   513     int i;
   514     uchar check = 0;
   515 
   516     for (i = 0; i < 128; ++i)
   517 	check += edid[i];
   518 
   519     info->checksum = check;
   520 }
   521 
   522 MonitorInfo *
   523 decode_edid (const uchar *edid)
   524 {
   525     MonitorInfo *info = calloc (1, sizeof (MonitorInfo));
   526 
   527     decode_check_sum (edid, info);
   528     
   529     if (!decode_header (edid) ||
   530         !decode_vendor_and_product_identification (edid, info) ||
   531         !decode_edid_version (edid, info) ||
   532         !decode_display_parameters (edid, info) ||
   533         !decode_color_characteristics (edid, info) ||
   534         !decode_established_timings (edid, info) ||
   535         !decode_standard_timings (edid, info) ||
   536         !decode_descriptors (edid, info)) {
   537         free(info);
   538 	return NULL;
   539     }
   540     
   541     return info;
   542 }
   543 
   544 static const char *
   545 yesno (int v)
   546 {
   547     return v? "yes" : "no";
   548 }
   549 
   550 void
   551 dump_monitor_info (MonitorInfo *info)
   552 {
   553     int i;
   554     
   555     printf ("Checksum: %d (%s)\n",
   556 	    info->checksum, info->checksum? "incorrect" : "correct");
   557     printf ("Manufacturer Code: %s\n", info->manufacturer_code);
   558     printf ("Product Code: 0x%x\n", info->product_code);
   559     printf ("Serial Number: %u\n", info->serial_number);
   560     
   561     if (info->production_week != -1)
   562 	printf ("Production Week: %d\n", info->production_week);
   563     else
   564 	printf ("Production Week: unspecified\n");
   565     
   566     if (info->production_year != -1)
   567 	printf ("Production Year: %d\n", info->production_year);
   568     else
   569 	printf ("Production Year: unspecified\n");
   570     
   571     if (info->model_year != -1)
   572 	printf ("Model Year: %d\n", info->model_year);
   573     else
   574 	printf ("Model Year: unspecified\n");
   575     
   576     printf ("EDID revision: %d.%d\n", info->major_version, info->minor_version);
   577     
   578     printf ("Display is %s\n", info->is_digital? "digital" : "analog");
   579     if (info->is_digital)
   580     {
   581 	const char *interface;
   582 	if (info->digital.bits_per_primary != -1)
   583 	    printf ("Bits Per Primary: %d\n", info->digital.bits_per_primary);
   584 	else
   585 	    printf ("Bits Per Primary: undefined\n");
   586 	
   587 	switch (info->digital.interface)
   588 	{
   589 	case DVI: interface = "DVI"; break;
   590 	case HDMI_A: interface = "HDMI-a"; break;
   591 	case HDMI_B: interface = "HDMI-b"; break;
   592 	case MDDI: interface = "MDDI"; break;
   593 	case DISPLAY_PORT: interface = "DisplayPort"; break;
   594 	case UNDEFINED: interface = "undefined"; break;
   595 	default: interface = "unknown"; break;
   596 	}
   597 	printf ("Interface: %s\n", interface);
   598 	
   599 	printf ("RGB 4:4:4: %s\n", yesno (info->digital.rgb444));
   600 	printf ("YCrCb 4:4:4: %s\n", yesno (info->digital.ycrcb444));
   601 	printf ("YCrCb 4:2:2: %s\n", yesno (info->digital.ycrcb422));
   602     }
   603     else
   604     {
   605        const char *s;
   606 	printf ("Video Signal Level: %f\n", info->analog.video_signal_level);
   607 	printf ("Sync Signal Level: %f\n", info->analog.sync_signal_level);
   608 	printf ("Total Signal Level: %f\n", info->analog.total_signal_level);
   609 	
   610 	printf ("Blank to Black: %s\n",
   611 		yesno (info->analog.blank_to_black));
   612 	printf ("Separate HV Sync: %s\n",
   613 		yesno (info->analog.separate_hv_sync));
   614 	printf ("Composite Sync on H: %s\n",
   615 		yesno (info->analog.composite_sync_on_h));
   616 	printf ("Serration on VSync: %s\n",
   617 		yesno (info->analog.serration_on_vsync));
   618 	
   619 	switch (info->analog.color_type)
   620 	{
   621 	case UNDEFINED_COLOR: s = "undefined"; break;
   622 	case MONOCHROME: s = "monochrome"; break;
   623 	case RGB: s = "rgb"; break;
   624 	case OTHER_COLOR: s = "other color"; break;
   625 	default: s = "unknown"; break;
   626 	};
   627 	
   628 	printf ("Color: %s\n", s);
   629     }
   630     
   631     if (info->width_mm == -1)
   632 	printf ("Width: undefined\n");
   633     else
   634 	printf ("Width: %d mm\n", info->width_mm);
   635     
   636     if (info->height_mm == -1)
   637 	printf ("Height: undefined\n");
   638     else
   639 	printf ("Height: %d mm\n", info->height_mm);
   640     
   641     if (info->aspect_ratio > 0)
   642 	printf ("Aspect Ratio: %f\n", info->aspect_ratio);
   643     else
   644 	printf ("Aspect Ratio: undefined\n");
   645     
   646     if (info->gamma >= 0)
   647 	printf ("Gamma: %f\n", info->gamma);
   648     else
   649 	printf ("Gamma: undefined\n");
   650     
   651     printf ("Standby: %s\n", yesno (info->standby));
   652     printf ("Suspend: %s\n", yesno (info->suspend));
   653     printf ("Active Off: %s\n", yesno (info->active_off));
   654     
   655     printf ("SRGB is Standard: %s\n", yesno (info->srgb_is_standard));
   656     printf ("Preferred Timing Includes Native: %s\n",
   657 	    yesno (info->preferred_timing_includes_native));
   658     printf ("Continuous Frequency: %s\n", yesno (info->continuous_frequency));
   659     
   660     printf ("Red X: %f\n", info->red_x);
   661     printf ("Red Y: %f\n", info->red_y);
   662     printf ("Green X: %f\n", info->green_x);
   663     printf ("Green Y: %f\n", info->green_y);
   664     printf ("Blue X: %f\n", info->blue_x);
   665     printf ("Blue Y: %f\n", info->blue_y);
   666     printf ("White X: %f\n", info->white_x);
   667     printf ("White Y: %f\n", info->white_y);
   668     
   669     printf ("Established Timings:\n");
   670     
   671     for (i = 0; i < 24; ++i)
   672     {
   673 	Timing *timing = &(info->established[i]);
   674 	
   675 	if (timing->frequency == 0)
   676 	    break;
   677 	
   678 	printf ("  %d x %d @ %d Hz\n",
   679 		timing->width, timing->height, timing->frequency);
   680 	
   681     }
   682     
   683     printf ("Standard Timings:\n");
   684     for (i = 0; i < 8; ++i)
   685     {
   686 	Timing *timing = &(info->standard[i]);
   687 	
   688 	if (timing->frequency == 0)
   689 	    break;
   690 	
   691 	printf ("  %d x %d @ %d Hz\n",
   692 		timing->width, timing->height, timing->frequency);
   693     }
   694     
   695     for (i = 0; i < info->n_detailed_timings; ++i)
   696     {
   697 	DetailedTiming *timing = &(info->detailed_timings[i]);
   698 	const char *s;
   699 	
   700 	printf ("Timing%s: \n",
   701 		(i == 0 && info->preferred_timing_includes_native)?
   702 		" (Preferred)" : "");
   703 	printf ("  Pixel Clock: %d\n", timing->pixel_clock);
   704 	printf ("  H Addressable: %d\n", timing->h_addr);
   705 	printf ("  H Blank: %d\n", timing->h_blank);
   706 	printf ("  H Front Porch: %d\n", timing->h_front_porch);
   707 	printf ("  H Sync: %d\n", timing->h_sync);
   708 	printf ("  V Addressable: %d\n", timing->v_addr);
   709 	printf ("  V Blank: %d\n", timing->v_blank);
   710 	printf ("  V Front Porch: %d\n", timing->v_front_porch);
   711 	printf ("  V Sync: %d\n", timing->v_sync);
   712 	printf ("  Width: %d mm\n", timing->width_mm);
   713 	printf ("  Height: %d mm\n", timing->height_mm);
   714 	printf ("  Right Border: %d\n", timing->right_border);
   715 	printf ("  Top Border: %d\n", timing->top_border);
   716 	switch (timing->stereo)
   717 	{
   718 	default:
   719 	case NO_STEREO:   s = "No Stereo"; break;
   720 	case FIELD_RIGHT: s = "Field Sequential, Right on Sync"; break;
   721 	case FIELD_LEFT:  s = "Field Sequential, Left on Sync"; break;
   722 	case TWO_WAY_RIGHT_ON_EVEN: s = "Two-way, Right on Even"; break;
   723 	case TWO_WAY_LEFT_ON_EVEN:  s = "Two-way, Left on Even"; break;
   724 	case FOUR_WAY_INTERLEAVED:  s = "Four-way Interleaved"; break;
   725 	case SIDE_BY_SIDE:          s = "Side-by-Side"; break;
   726 	}
   727 	printf ("  Stereo: %s\n", s);
   728 	
   729 	if (timing->digital_sync)
   730 	{
   731 	    printf ("  Digital Sync:\n");
   732 	    printf ("    composite: %s\n", yesno (timing->digital.composite));
   733 	    printf ("    serrations: %s\n", yesno (timing->digital.serrations));
   734 	    printf ("    negative vsync: %s\n",
   735 		    yesno (timing->digital.negative_vsync));
   736 	    printf ("    negative hsync: %s\n",
   737 		    yesno (timing->digital.negative_hsync));
   738 	}
   739 	else
   740 	{
   741 	    printf ("  Analog Sync:\n");
   742 	    printf ("    bipolar: %s\n", yesno (timing->analog.bipolar));
   743 	    printf ("    serrations: %s\n", yesno (timing->analog.serrations));
   744 	    printf ("    sync on green: %s\n", yesno (
   745 			timing->analog.sync_on_green));
   746 	}
   747     }
   748     
   749     printf ("Detailed Product information:\n");
   750     printf ("  Product Name: %s\n", info->dsc_product_name);
   751     printf ("  Serial Number: %s\n", info->dsc_serial_number);
   752     printf ("  Unspecified String: %s\n", info->dsc_string);
   753 }
   754