kc3-lang/SDL/src/video/x11/edid-parse.c

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• Hash : e81bf12b
  Author :
  Date : 2016-12-12T09:18:42
  

  Fixed edid parsing code for older gcc compilers Ozkan Sezer This adds the name 'ad' to two unnamed unions in edid.h and adjusts edid-parse.c for it. Nameless unions are not supported in ancient gcc, which I happened to use on one of my ancient setups.

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• src/video/x11/edid-parse.c

• /*
   * Copyright 2007 Red Hat, Inc.
   *
   * Permission is hereby granted, free of charge, to any person obtaining a
   * copy of this software and associated documentation files (the "Software"),
   * to deal in the Software without restriction, including without limitation
   * on the rights to use, copy, modify, merge, publish, distribute, sub
   * license, and/or sell copies of the Software, and to permit persons to whom
   * the Software is furnished to do so, subject to the following conditions:
   *
   * The above copyright notice and this permission notice (including the next
   * paragraph) shall be included in all copies or substantial portions of the
   * Software.
   *
   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
   * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.  IN NO EVENT SHALL
   * THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
   * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
   * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
   */
  
  /* Author: Soren Sandmann <sandmann@redhat.com> */
  #include "../../SDL_internal.h"
  #include "SDL_stdinc.h"
  
  #include "edid.h"
  #include <stdlib.h>
  #include <string.h>
  #include <math.h>
  #include <stdio.h>
  
  #define TRUE 1
  #define FALSE 0
  
  static int
  get_bit (int in, int bit)
  {
      return (in & (1 << bit)) >> bit;
  }
  
  static int
  get_bits (int in, int begin, int end)
  {
      int mask = (1 << (end - begin + 1)) - 1;
      
      return (in >> begin) & mask;
  }
  
  static int
  decode_header (const uchar *edid)
  {
      if (memcmp (edid, "\x00\xff\xff\xff\xff\xff\xff\x00", 8) == 0)
  	return TRUE;
      return FALSE;
  }
  
  static int
  decode_vendor_and_product_identification (const uchar *edid, MonitorInfo *info)
  {
      int is_model_year;
      
      /* Manufacturer Code */
      info->manufacturer_code[0]  = get_bits (edid[0x08], 2, 6);
      info->manufacturer_code[1]  = get_bits (edid[0x08], 0, 1) << 3;
      info->manufacturer_code[1] |= get_bits (edid[0x09], 5, 7);
      info->manufacturer_code[2]  = get_bits (edid[0x09], 0, 4);
      info->manufacturer_code[3]  = '\0';
      
      info->manufacturer_code[0] += 'A' - 1;
      info->manufacturer_code[1] += 'A' - 1;
      info->manufacturer_code[2] += 'A' - 1;
  
      /* Product Code */
      info->product_code = edid[0x0b] << 8 | edid[0x0a];
  
      /* Serial Number */
      info->serial_number =
  	edid[0x0c] | edid[0x0d] << 8 | edid[0x0e] << 16 | edid[0x0f] << 24;
  
      /* Week and Year */
      is_model_year = FALSE;
      switch (edid[0x10])
      {
      case 0x00:
  	info->production_week = -1;
  	break;
  
      case 0xff:
  	info->production_week = -1;
  	is_model_year = TRUE;
  	break;
  
      default:
  	info->production_week = edid[0x10];
  	break;
      }
  
      if (is_model_year)
      {
  	info->production_year = -1;
  	info->model_year = 1990 + edid[0x11];
      }
      else
      {
  	info->production_year = 1990 + edid[0x11];
  	info->model_year = -1;
      }
  
      return TRUE;
  }
  
  static int
  decode_edid_version (const uchar *edid, MonitorInfo *info)
  {
      info->major_version = edid[0x12];
      info->minor_version = edid[0x13];
  
      return TRUE;
  }
  
  static int
  decode_display_parameters (const uchar *edid, MonitorInfo *info)
  {
      /* Digital vs Analog */
      info->is_digital = get_bit (edid[0x14], 7);
  
      if (info->is_digital)
      {
  	int bits;
  	
  	static const int bit_depth[8] =
  	{
  	    -1, 6, 8, 10, 12, 14, 16, -1
  	};
  
  	static const Interface interfaces[6] =
  	{
  	    UNDEFINED, DVI, HDMI_A, HDMI_B, MDDI, DISPLAY_PORT
  	};
  
  	bits = get_bits (edid[0x14], 4, 6);
  	info->ad.digital.bits_per_primary = bit_depth[bits];
  
  	bits = get_bits (edid[0x14], 0, 3);
  	
  	if (bits <= 5)
  	    info->ad.digital.interface = interfaces[bits];
  	else
  	    info->ad.digital.interface = UNDEFINED;
      }
      else
      {
  	int bits = get_bits (edid[0x14], 5, 6);
  	
  	static const double levels[][3] =
  	{
  	    { 0.7,   0.3,    1.0 },
  	    { 0.714, 0.286,  1.0 },
  	    { 1.0,   0.4,    1.4 },
  	    { 0.7,   0.0,    0.7 },
  	};
  
  	info->ad.analog.video_signal_level = levels[bits][0];
  	info->ad.analog.sync_signal_level = levels[bits][1];
  	info->ad.analog.total_signal_level = levels[bits][2];
  
  	info->ad.analog.blank_to_black = get_bit (edid[0x14], 4);
  
  	info->ad.analog.separate_hv_sync = get_bit (edid[0x14], 3);
  	info->ad.analog.composite_sync_on_h = get_bit (edid[0x14], 2);
  	info->ad.analog.composite_sync_on_green = get_bit (edid[0x14], 1);
  
  	info->ad.analog.serration_on_vsync = get_bit (edid[0x14], 0);
      }
  
      /* Screen Size / Aspect Ratio */
      if (edid[0x15] == 0 && edid[0x16] == 0)
      {
  	info->width_mm = -1;
  	info->height_mm = -1;
  	info->aspect_ratio = -1.0;
      }
      else if (edid[0x16] == 0)
      {
  	info->width_mm = -1;
  	info->height_mm = -1; 
  	info->aspect_ratio = 100.0 / (edid[0x15] + 99);
      }
      else if (edid[0x15] == 0)
      {
  	info->width_mm = -1;
  	info->height_mm = -1;
  	info->aspect_ratio = 100.0 / (edid[0x16] + 99);
  	info->aspect_ratio = 1/info->aspect_ratio; /* portrait */
      }
      else
      {
  	info->width_mm = 10 * edid[0x15];
  	info->height_mm = 10 * edid[0x16];
      }
  
      /* Gamma */
      if (edid[0x17] == 0xFF)
  	info->gamma = -1.0;
      else
  	info->gamma = (edid[0x17] + 100.0) / 100.0;
  
      /* Features */
      info->standby = get_bit (edid[0x18], 7);
      info->suspend = get_bit (edid[0x18], 6);
      info->active_off = get_bit (edid[0x18], 5);
  
      if (info->is_digital)
      {
  	info->ad.digital.rgb444 = TRUE;
  	if (get_bit (edid[0x18], 3))
  	    info->ad.digital.ycrcb444 = 1;
  	if (get_bit (edid[0x18], 4))
  	    info->ad.digital.ycrcb422 = 1;
      }
      else
      {
  	int bits = get_bits (edid[0x18], 3, 4);
  	ColorType color_type[4] =
  	{
  	    MONOCHROME, RGB, OTHER_COLOR, UNDEFINED_COLOR
  	};
  
  	info->ad.analog.color_type = color_type[bits];
      }
  
      info->srgb_is_standard = get_bit (edid[0x18], 2);
  
      /* In 1.3 this is called "has preferred timing" */
      info->preferred_timing_includes_native = get_bit (edid[0x18], 1);
  
      /* FIXME: In 1.3 this indicates whether the monitor accepts GTF */
      info->continuous_frequency = get_bit (edid[0x18], 0);
      return TRUE;
  }
  
  static double
  decode_fraction (int high, int low)
  {
      double result = 0.0;
      int i;
  
      high = (high << 2) | low;
  
      for (i = 0; i < 10; ++i)
  	result += get_bit (high, i) * SDL_pow (2, i - 10);
  
      return result;
  }
  
  static int
  decode_color_characteristics (const uchar *edid, MonitorInfo *info)
  {
      info->red_x = decode_fraction (edid[0x1b], get_bits (edid[0x19], 6, 7));
      info->red_y = decode_fraction (edid[0x1c], get_bits (edid[0x19], 5, 4));
      info->green_x = decode_fraction (edid[0x1d], get_bits (edid[0x19], 2, 3));
      info->green_y = decode_fraction (edid[0x1e], get_bits (edid[0x19], 0, 1));
      info->blue_x = decode_fraction (edid[0x1f], get_bits (edid[0x1a], 6, 7));
      info->blue_y = decode_fraction (edid[0x20], get_bits (edid[0x1a], 4, 5));
      info->white_x = decode_fraction (edid[0x21], get_bits (edid[0x1a], 2, 3));
      info->white_y = decode_fraction (edid[0x22], get_bits (edid[0x1a], 0, 1));
  
      return TRUE;
  }
  
  static int
  decode_established_timings (const uchar *edid, MonitorInfo *info)
  {
      static const Timing established[][8] = 
      {
  	{
  	    { 800, 600, 60 },
  	    { 800, 600, 56 },
  	    { 640, 480, 75 },
  	    { 640, 480, 72 },
  	    { 640, 480, 67 },
  	    { 640, 480, 60 },
  	    { 720, 400, 88 },
  	    { 720, 400, 70 }
  	},
  	{
  	    { 1280, 1024, 75 },
  	    { 1024, 768, 75 },
  	    { 1024, 768, 70 },
  	    { 1024, 768, 60 },
  	    { 1024, 768, 87 },
  	    { 832, 624, 75 },
  	    { 800, 600, 75 },
  	    { 800, 600, 72 }
  	},
  	{
  	    { 0, 0, 0 },
  	    { 0, 0, 0 },
  	    { 0, 0, 0 },
  	    { 0, 0, 0 },
  	    { 0, 0, 0 },
  	    { 0, 0, 0 },
  	    { 0, 0, 0 },
  	    { 1152, 870, 75 }
  	},
      };
  
      int i, j, idx;
  
      idx = 0;
      for (i = 0; i < 3; ++i)
      {
  	for (j = 0; j < 8; ++j)
  	{
  	    int byte = edid[0x23 + i];
  
  	    if (get_bit (byte, j) && established[i][j].frequency != 0)
  		info->established[idx++] = established[i][j];
  	}
      }
      return TRUE;
  }
  
  static int
  decode_standard_timings (const uchar *edid, MonitorInfo *info)
  {
      int i;
      
      for (i = 0; i < 8; i++)
      {
  	int first = edid[0x26 + 2 * i];
  	int second = edid[0x27 + 2 * i];
  
  	if (first != 0x01 && second != 0x01)
  	{
  	    int w = 8 * (first + 31);
  	    int h = 0;
  
  	    switch (get_bits (second, 6, 7))
  	    {
  	    case 0x00: h = (w / 16) * 10; break;
  	    case 0x01: h = (w / 4) * 3; break;
  	    case 0x02: h = (w / 5) * 4; break;
  	    case 0x03: h = (w / 16) * 9; break;
  	    }
  
  	    info->standard[i].width = w;
  	    info->standard[i].height = h;
  	    info->standard[i].frequency = get_bits (second, 0, 5) + 60;
  	}
      }
      
      return TRUE;
  }
  
  static void
  decode_lf_string (const uchar *s, int n_chars, char *result)
  {
      int i;
      for (i = 0; i < n_chars; ++i)
      {
  	if (s[i] == 0x0a)
  	{
  	    *result++ = '\0';
  	    break;
  	}
  	else if (s[i] == 0x00)
  	{
  	    /* Convert embedded 0's to spaces */
  	    *result++ = ' ';
  	}
  	else
  	{
  	    *result++ = s[i];
  	}
      }
  }
  
  static void
  decode_display_descriptor (const uchar *desc,
  			   MonitorInfo *info)
  {
      switch (desc[0x03])
      {
      case 0xFC:
  	decode_lf_string (desc + 5, 13, info->dsc_product_name);
  	break;
      case 0xFF:
  	decode_lf_string (desc + 5, 13, info->dsc_serial_number);
  	break;
      case 0xFE:
  	decode_lf_string (desc + 5, 13, info->dsc_string);
  	break;
      case 0xFD:
  	/* Range Limits */
  	break;
      case 0xFB:
  	/* Color Point */
  	break;
      case 0xFA:
  	/* Timing Identifications */
  	break;
      case 0xF9:
  	/* Color Management */
  	break;
      case 0xF8:
  	/* Timing Codes */
  	break;
      case 0xF7:
  	/* Established Timings */
  	break;
      case 0x10:
  	break;
      }
  }
  
  static void
  decode_detailed_timing (const uchar *timing,
  			DetailedTiming *detailed)
  {
      int bits;
      StereoType stereo[] =
      {
  	NO_STEREO, NO_STEREO, FIELD_RIGHT, FIELD_LEFT,
  	TWO_WAY_RIGHT_ON_EVEN, TWO_WAY_LEFT_ON_EVEN,
  	FOUR_WAY_INTERLEAVED, SIDE_BY_SIDE
      };
      
      detailed->pixel_clock = (timing[0x00] | timing[0x01] << 8) * 10000;
      detailed->h_addr = timing[0x02] | ((timing[0x04] & 0xf0) << 4);
      detailed->h_blank = timing[0x03] | ((timing[0x04] & 0x0f) << 8);
      detailed->v_addr = timing[0x05] | ((timing[0x07] & 0xf0) << 4);
      detailed->v_blank = timing[0x06] | ((timing[0x07] & 0x0f) << 8);
      detailed->h_front_porch = timing[0x08] | get_bits (timing[0x0b], 6, 7) << 8;
      detailed->h_sync = timing[0x09] | get_bits (timing[0x0b], 4, 5) << 8;
      detailed->v_front_porch =
  	get_bits (timing[0x0a], 4, 7) | get_bits (timing[0x0b], 2, 3) << 4;
      detailed->v_sync =
  	get_bits (timing[0x0a], 0, 3) | get_bits (timing[0x0b], 0, 1) << 4;
      detailed->width_mm =  timing[0x0c] | get_bits (timing[0x0e], 4, 7) << 8;
      detailed->height_mm = timing[0x0d] | get_bits (timing[0x0e], 0, 3) << 8;
      detailed->right_border = timing[0x0f];
      detailed->top_border = timing[0x10];
  
      detailed->interlaced = get_bit (timing[0x11], 7);
  
      /* Stereo */
      bits = get_bits (timing[0x11], 5, 6) << 1 | get_bit (timing[0x11], 0);
      detailed->stereo = stereo[bits];
  
      /* Sync */
      bits = timing[0x11];
  
      detailed->digital_sync = get_bit (bits, 4);
      if (detailed->digital_sync)
      {
  	detailed->ad.digital.composite = !get_bit (bits, 3);
  
  	if (detailed->ad.digital.composite)
  	{
  	    detailed->ad.digital.serrations = get_bit (bits, 2);
  	    detailed->ad.digital.negative_vsync = FALSE;
  	}
  	else
  	{
  	    detailed->ad.digital.serrations = FALSE;
  	    detailed->ad.digital.negative_vsync = !get_bit (bits, 2);
  	}
  
  	detailed->ad.digital.negative_hsync = !get_bit (bits, 0);
      }
      else
      {
  	detailed->ad.analog.bipolar = get_bit (bits, 3);
  	detailed->ad.analog.serrations = get_bit (bits, 2);
  	detailed->ad.analog.sync_on_green = !get_bit (bits, 1);
      }
  }
  
  static int
  decode_descriptors (const uchar *edid, MonitorInfo *info)
  {
      int i;
      int timing_idx;
      
      timing_idx = 0;
      
      for (i = 0; i < 4; ++i)
      {
  	int index = 0x36 + i * 18;
  
  	if (edid[index + 0] == 0x00 && edid[index + 1] == 0x00)
  	{
  	    decode_display_descriptor (edid + index, info);
  	}
  	else
  	{
  	    decode_detailed_timing (
  		edid + index, &(info->detailed_timings[timing_idx++]));
  	}
      }
  
      info->n_detailed_timings = timing_idx;
  
      return TRUE;
  }
  
  static void
  decode_check_sum (const uchar *edid,
  		  MonitorInfo *info)
  {
      int i;
      uchar check = 0;
  
      for (i = 0; i < 128; ++i)
  	check += edid[i];
  
      info->checksum = check;
  }
  
  MonitorInfo *
  decode_edid (const uchar *edid)
  {
      MonitorInfo *info = calloc (1, sizeof (MonitorInfo));
  
      decode_check_sum (edid, info);
      
      if (!decode_header (edid) ||
          !decode_vendor_and_product_identification (edid, info) ||
          !decode_edid_version (edid, info) ||
          !decode_display_parameters (edid, info) ||
          !decode_color_characteristics (edid, info) ||
          !decode_established_timings (edid, info) ||
          !decode_standard_timings (edid, info) ||
          !decode_descriptors (edid, info)) {
          free(info);
  	return NULL;
      }
      
      return info;
  }
  
  static const char *
  yesno (int v)
  {
      return v? "yes" : "no";
  }
  
  void
  dump_monitor_info (MonitorInfo *info)
  {
      int i;
      
      printf ("Checksum: %d (%s)\n",
  	    info->checksum, info->checksum? "incorrect" : "correct");
      printf ("Manufacturer Code: %s\n", info->manufacturer_code);
      printf ("Product Code: 0x%x\n", info->product_code);
      printf ("Serial Number: %u\n", info->serial_number);
      
      if (info->production_week != -1)
  	printf ("Production Week: %d\n", info->production_week);
      else
  	printf ("Production Week: unspecified\n");
      
      if (info->production_year != -1)
  	printf ("Production Year: %d\n", info->production_year);
      else
  	printf ("Production Year: unspecified\n");
      
      if (info->model_year != -1)
  	printf ("Model Year: %d\n", info->model_year);
      else
  	printf ("Model Year: unspecified\n");
      
      printf ("EDID revision: %d.%d\n", info->major_version, info->minor_version);
      
      printf ("Display is %s\n", info->is_digital? "digital" : "analog");
      if (info->is_digital)
      {
  	const char *interface;
  	if (info->ad.digital.bits_per_primary != -1)
  	    printf ("Bits Per Primary: %d\n", info->ad.digital.bits_per_primary);
  	else
  	    printf ("Bits Per Primary: undefined\n");
  	
  	switch (info->ad.digital.interface)
  	{
  	case DVI: interface = "DVI"; break;
  	case HDMI_A: interface = "HDMI-a"; break;
  	case HDMI_B: interface = "HDMI-b"; break;
  	case MDDI: interface = "MDDI"; break;
  	case DISPLAY_PORT: interface = "DisplayPort"; break;
  	case UNDEFINED: interface = "undefined"; break;
  	default: interface = "unknown"; break;
  	}
  	printf ("Interface: %s\n", interface);
  	
  	printf ("RGB 4:4:4: %s\n", yesno (info->ad.digital.rgb444));
  	printf ("YCrCb 4:4:4: %s\n", yesno (info->ad.digital.ycrcb444));
  	printf ("YCrCb 4:2:2: %s\n", yesno (info->ad.digital.ycrcb422));
      }
      else
      {
         const char *s;
  	printf ("Video Signal Level: %f\n", info->ad.analog.video_signal_level);
  	printf ("Sync Signal Level: %f\n", info->ad.analog.sync_signal_level);
  	printf ("Total Signal Level: %f\n", info->ad.analog.total_signal_level);
  	
  	printf ("Blank to Black: %s\n",
  		yesno (info->ad.analog.blank_to_black));
  	printf ("Separate HV Sync: %s\n",
  		yesno (info->ad.analog.separate_hv_sync));
  	printf ("Composite Sync on H: %s\n",
  		yesno (info->ad.analog.composite_sync_on_h));
  	printf ("Serration on VSync: %s\n",
  		yesno (info->ad.analog.serration_on_vsync));
  	
  	switch (info->ad.analog.color_type)
  	{
  	case UNDEFINED_COLOR: s = "undefined"; break;
  	case MONOCHROME: s = "monochrome"; break;
  	case RGB: s = "rgb"; break;
  	case OTHER_COLOR: s = "other color"; break;
  	default: s = "unknown"; break;
  	};
  	
  	printf ("Color: %s\n", s);
      }
      
      if (info->width_mm == -1)
  	printf ("Width: undefined\n");
      else
  	printf ("Width: %d mm\n", info->width_mm);
      
      if (info->height_mm == -1)
  	printf ("Height: undefined\n");
      else
  	printf ("Height: %d mm\n", info->height_mm);
      
      if (info->aspect_ratio > 0)
  	printf ("Aspect Ratio: %f\n", info->aspect_ratio);
      else
  	printf ("Aspect Ratio: undefined\n");
      
      if (info->gamma >= 0)
  	printf ("Gamma: %f\n", info->gamma);
      else
  	printf ("Gamma: undefined\n");
      
      printf ("Standby: %s\n", yesno (info->standby));
      printf ("Suspend: %s\n", yesno (info->suspend));
      printf ("Active Off: %s\n", yesno (info->active_off));
      
      printf ("SRGB is Standard: %s\n", yesno (info->srgb_is_standard));
      printf ("Preferred Timing Includes Native: %s\n",
  	    yesno (info->preferred_timing_includes_native));
      printf ("Continuous Frequency: %s\n", yesno (info->continuous_frequency));
      
      printf ("Red X: %f\n", info->red_x);
      printf ("Red Y: %f\n", info->red_y);
      printf ("Green X: %f\n", info->green_x);
      printf ("Green Y: %f\n", info->green_y);
      printf ("Blue X: %f\n", info->blue_x);
      printf ("Blue Y: %f\n", info->blue_y);
      printf ("White X: %f\n", info->white_x);
      printf ("White Y: %f\n", info->white_y);
      
      printf ("Established Timings:\n");
      
      for (i = 0; i < 24; ++i)
      {
  	Timing *timing = &(info->established[i]);
  	
  	if (timing->frequency == 0)
  	    break;
  	
  	printf ("  %d x %d @ %d Hz\n",
  		timing->width, timing->height, timing->frequency);
  	
      }
      
      printf ("Standard Timings:\n");
      for (i = 0; i < 8; ++i)
      {
  	Timing *timing = &(info->standard[i]);
  	
  	if (timing->frequency == 0)
  	    break;
  	
  	printf ("  %d x %d @ %d Hz\n",
  		timing->width, timing->height, timing->frequency);
      }
      
      for (i = 0; i < info->n_detailed_timings; ++i)
      {
  	DetailedTiming *timing = &(info->detailed_timings[i]);
  	const char *s;
  	
  	printf ("Timing%s: \n",
  		(i == 0 && info->preferred_timing_includes_native)?
  		" (Preferred)" : "");
  	printf ("  Pixel Clock: %d\n", timing->pixel_clock);
  	printf ("  H Addressable: %d\n", timing->h_addr);
  	printf ("  H Blank: %d\n", timing->h_blank);
  	printf ("  H Front Porch: %d\n", timing->h_front_porch);
  	printf ("  H Sync: %d\n", timing->h_sync);
  	printf ("  V Addressable: %d\n", timing->v_addr);
  	printf ("  V Blank: %d\n", timing->v_blank);
  	printf ("  V Front Porch: %d\n", timing->v_front_porch);
  	printf ("  V Sync: %d\n", timing->v_sync);
  	printf ("  Width: %d mm\n", timing->width_mm);
  	printf ("  Height: %d mm\n", timing->height_mm);
  	printf ("  Right Border: %d\n", timing->right_border);
  	printf ("  Top Border: %d\n", timing->top_border);
  	switch (timing->stereo)
  	{
  	default:
  	case NO_STEREO:   s = "No Stereo"; break;
  	case FIELD_RIGHT: s = "Field Sequential, Right on Sync"; break;
  	case FIELD_LEFT:  s = "Field Sequential, Left on Sync"; break;
  	case TWO_WAY_RIGHT_ON_EVEN: s = "Two-way, Right on Even"; break;
  	case TWO_WAY_LEFT_ON_EVEN:  s = "Two-way, Left on Even"; break;
  	case FOUR_WAY_INTERLEAVED:  s = "Four-way Interleaved"; break;
  	case SIDE_BY_SIDE:          s = "Side-by-Side"; break;
  	}
  	printf ("  Stereo: %s\n", s);
  	
  	if (timing->digital_sync)
  	{
  	    printf ("  Digital Sync:\n");
  	    printf ("    composite: %s\n", yesno (timing->ad.digital.composite));
  	    printf ("    serrations: %s\n", yesno (timing->ad.digital.serrations));
  	    printf ("    negative vsync: %s\n",
  		    yesno (timing->ad.digital.negative_vsync));
  	    printf ("    negative hsync: %s\n",
  		    yesno (timing->ad.digital.negative_hsync));
  	}
  	else
  	{
  	    printf ("  Analog Sync:\n");
  	    printf ("    bipolar: %s\n", yesno (timing->ad.analog.bipolar));
  	    printf ("    serrations: %s\n", yesno (timing->ad.analog.serrations));
  	    printf ("    sync on green: %s\n", yesno (
  			timing->ad.analog.sync_on_green));
  	}
      }
      
      printf ("Detailed Product information:\n");
      printf ("  Product Name: %s\n", info->dsc_product_name);
      printf ("  Serial Number: %s\n", info->dsc_serial_number);
      printf ("  Unspecified String: %s\n", info->dsc_string);
  }
  
  

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