path: root/testedid.c

/*
 * Copyright 2010 Intel Corporation
 *	 Yi Sun  <yi.sun@Intel.com>
 *
 * 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
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * 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 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 NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS 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.
 */

/*
 * This program is intended for testing EDID. It is used to parse the EDID.
 * Now, it is mainly parse all the information in the block 0 of the EDID.
 *
 * TODO:
 * 	-HDMI block parse
 *	-
 */
#include <stdio.h>
#include <stddef.h>   /*dir */
#include <sys/types.h>
#include <dirent.h>
#include <string.h>
#include <malloc.h>
#include <stdlib.h>
#include <fcntl.h>	/*open */
#include <unistd.h> /*read */
#include <sys/stat.h>
#include "drm_edid.h"

#define EDIDPATH "/sys/class/drm/"
#define MAXCARD 10
#define MAXFILENAME 256
#define MAXEDID 256

struct mode_line {
	char mode[12];
	int freq;
};

union VendorProduct {
	struct {
		int c:5;
		int b:5;
		int a:5;
	} idchr;
	struct {
		int lb:8;
		int hb:8;
	} singlechr;
};

union VideoInputDefinition {
	struct {
		char serrationvsync:1;
		char syncongreen:1;
		char compositesync:1;
		char separatesyncs:1;
		char blanktoblacksetup:1;
		char videolevel:2;
		char analogordigital:1;
	} inputdef_a;

	struct {
		char InterfaceStandardSupported:4;
		char colorbitdepth:3;
		char analogordigital:1;
	} inputdef_d;
};

struct PowerManSupport {
	char GTFSupport:1;
	char perfertimemod:1;
	char stdcolorspace:1;
	char monchrome:2;
	char activeoff:1;
	char suspend:1;
	char standby:1;
};

char edid_head[] = {0x0, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x0};

int bitsperprimarycolor[] = {0, 6, 8, 10, 12, 14, 16, 0};

char *interfacetpye[] = {
	"",
	"DVI",
	"HDMI-a",
	"HDMI-b",
	"MDDI",
	"DisplayPort"
};

struct mode_line estmode[] = {
	{"1280x1024",75},
	{"1024x768",75},
	{"1024x768",70},
	{"1024x768",60},
	{"1024x768",87},
	{"832x624",75},
	{"800x600",75},
	{"800x600",72},
	{"800x600",60},
	{"800x600",56},
	{"640x480",75},
	{"640x480",72},
	{"640x480",67},
	{"640x480",60},
	{"720x400",88},
	{"720x400",70}
};

struct StdTiming {
	int vertfrequency:6;
	int aspectratio:2;
};

union PixelClock {
	struct {
		int clkl:8;
		int clkh:8;
		int :16;
	} clkchr;
	int clk;
};

union Disp {
	struct {
		int vdispl:8;
		int vdisph:4;
		int :0;
	} vdispchr;
	int value;
};

union Sync {
	struct {
		int syncl:8;
		int synch:2;
	} syncchr;
	int value;
};

union H4bit {
	struct {
	    char blank:4;
	    char disp:4;
	} h4bitchr;
	char value;
};

union H2bit {
	struct {
		char vsync:2;
		char dsync:2;
		char hsync:2;
	} chr;
	char value;
};

char *bppinfo[] = {
	"DVI_Dual",
	"",
	"",
	"DC_Y444",
	"DC_30bit",
	"DC_36bit",
	"DC_48bit",
	"Supports_AI"
};


static char*
get_edid(char *edid_file_name)
{
	char *edid_block;
	int edid_fp;
	int read_count = 0;

	edid_fp = open(edid_file_name,O_RDONLY);

	if (edid_fp < 0) {
		printf("open edid file error:%s\n", edid_file_name);
		return NULL;
	}

	edid_block = (char *)malloc(MAXEDID);
	memset(edid_block, 0 , MAXEDID);

	read_count = read(edid_fp, edid_block, MAXEDID);

	if (read_count > 0)
		return edid_block;
	else
		return NULL;
}

static void print_edid(char *edid)
{
	for (int j=0; j < MAXEDID; j++) {
		if (j % 16 == 0)
			printf("\t%04hhx:  ", j);
		if (j % 16 == 8)
			printf("	");
		printf("%02hhx ", *(edid+j));
		if (j % 16 == 15)
			printf("\n");
	}
	printf("\n");
}

static int
get_connected_card_list(char  *** connected_card_list )
{
	struct dirent *dirent_ptr;
	DIR* drm_dir_ptr;
	int connected_count = 0;
	char edid_file[MAXFILENAME];
	char *new_edid;

	drm_dir_ptr = opendir(EDIDPATH);

	if (drm_dir_ptr == NULL){
		printf("Error: fail to open the directory %s\n", EDIDPATH);
		return 1;
	}

	(*connected_card_list)= malloc(MAXCARD * sizeof(char*));

	dirent_ptr = readdir(drm_dir_ptr);

	while (dirent_ptr) {
		if (strstr(dirent_ptr->d_name, "card0-") >0 ) {
			sprintf(edid_file, "%s%s/edid", EDIDPATH, dirent_ptr->d_name);

			new_edid = get_edid(edid_file);

			if (new_edid != NULL){
				(*connected_card_list)[connected_count] = malloc(MAXFILENAME);
				memcpy((*connected_card_list)[connected_count], edid_file, strlen(edid_file) );
				connected_count++;
			}
		}
		dirent_ptr = readdir(drm_dir_ptr);
	}
	closedir(drm_dir_ptr);

	return connected_count;
}

static int
get_connected_edid_list (char ***edid_list)
{
	char **connected_card_list;
	int connected_count;
	connected_count = get_connected_card_list( & connected_card_list );

	(*edid_list) = malloc (connected_count * sizeof(char));

	for (int i = 0; i < connected_count; i++)
	{
			//sprintf(edid_file, "%s%s/edid", EDIDPATH, dirent_ptr->d_name);
			(*edid_list)[i] = get_edid(connected_card_list[i]);
	}
	return connected_count;
}


static char chrmap(char ch)
{
	return 'A'+ch-1;
}

/*
	Get the whole mode line declared in DRM by mode and frequency.
*/
static void find_dmt_mode(struct mode_line* m, struct drm_display_mode* rmode)
{
	for (int i=0; i < sizeof(dmt_modes) / sizeof(struct drm_display_mode); i++) {
		if (strcmp(m->mode, dmt_modes[i].name) == 0 && m->freq==dmt_modes[i].freq) {
			memcpy(rmode, &dmt_modes[i], sizeof(struct drm_display_mode));
		}
	}
}

static void find_est_mode(struct mode_line* m, struct drm_display_mode* rmode)
{
	for (int i = 0; i < 16; i++) {
		if (strcmp(m->mode, est_modes[i].name) == 0 && m->freq == est_modes[i].freq) {
			memcpy(rmode, &est_modes[i], sizeof(struct drm_display_mode));
		}
	}
}

static int gethdmiblock(char edid[])
{
	for (int i = 0; i < MAXEDID; i++) {
		if (edid[i] == 0x03 &&  edid[i+1] == 0x0c && edid[i+2] == 0) {
		   return i;
		}
	}
	return -1;
}

static int check_edid(char edid[])
{
	if( memcmp(edid, edid_head, 8) !=0 ) {
		puts("Bad edid file\n");
		return 1;
	}
	return 0;
}

static int parse_edid_vendor_product(char edid[])
{
/*
 * Vendor & Product ID: 10 Bytes
 * 08h, 09h 2 ID Manufacturer Name Section 3.4.1
 * 0Ah, 0Bh 2 ID Product Code Section 3.4.2
 * 0Ch → 0Fh 4 ID Serial Number Section 3.4.3
 * 10h, 11h 2 Week of Manufacture or Model Year Flag,
*/
	union VendorProduct mfid;
	mfid.singlechr.hb = edid[8];
	mfid.singlechr.lb = edid[9];

	printf("\tManufactureID: %c%c%c\t", chrmap(mfid.idchr.a), chrmap(mfid.idchr.b), chrmap(mfid.idchr.c));
	printf("\tMonitorID: %hhx%hhx\t", edid[0xb], edid[0xa]);
	printf("\tSerialNumber: %c%c%c%c\n", edid[0xf], edid[0xe], edid[0xd], edid[0xc]);
	printf("\tProductWeek/year: %d/%d\n", edid[0x10], edid[0x11]+1990);
	printf("\tEdidVersion: %hhx.%hhx\n", edid[0x12], edid[0x13]);

	return 0;
}
static int
parse_edid_video_input(char edid[])
{
/*
 * Address Bit Definitions Description
 * 7 _ _ _ _ _ _ _ Video Signal Interface: Bit 7
 * 0 _ _ _ _ _ _ _ Input is an Analog Video Signal Interface:
 * 7 6 5 _ _ _ _ _ Signal Level Standard: Video : Sync : Total Bits 6 & 5
 * 0 0 0 _ _ _ _ _ 0.700 : 0.300 : 1.000 V p-p
 * 0 0 1 _ _ _ _ _ 0.714 : 0.286 : 1.000 V p-p
 * 0 1 0 _ _ _ _ _ 1.000 : 0.400 : 1.400 V p-p
 * 0 1 1 _ _ _ _ _ 0.700 : 0.000 : 0.700 V p-p
 * 7 _ _ 4 _ _ _ _ Video Setup: Bit 4
 * 0 _ _ 0 _ _ _ _ Video Setup: Blank Level = Black Level
 * 0 _ _ 1 _ _ _ _ Video Setup: Blank-to-Black setup or pedestal (see Note 1)
 * 7 _ _ _ 3 2 1 _ Synchronization Types: Bits 3 → 1
 * 0 _ _ _ 0 _ _ _ Separate Sync H & V Signals are not supported
 * 0 _ _ _ 1 _ _ _ Separate Sync H & V Signals are supported
 * 0 _ _ _ _ 0 _ _ Composite Sync Signal on Horizontal is not supported
 * 0 _ _ _ _ 1 _ _ Composite Sync Signal on Horizontal is supported
 * 0 _ _ _ _ _ 0 _ Composite Sync Signal on Green Video is not supported
 * 0 _ _ _ _ _ 1 _ Composite Sync Signal on Green Video is supported
 * 7 _ _ _ _ _ _ 0 Serrations: Bit 0
 * 0 _ _ _ _ _ _ 0 Serration on the Vertical Sync is not supported
 * 14h
 * 0 _ _ _ _ _ _ 1 Serration on the Vertical Sync is supported (see Note 2)
 * 7 _ _ _ _ _ _ _ Video Signal Interface: Bit 7
 * 1 _ _ _ _ _ _ _ Input is a Digital Video Signal Interface: (see Note 3)
 * 7 6 5 4 _ _ _ _ Color Bit Depth: Bits 6 → 4
 * 1 0 0 0 _ _ _ _ Color Bit Depth is undefined
 * 1 0 0 1 _ _ _ _ 6 Bits per Primary Color
 * 1 0 1 0 _ _ _ _ 8 Bits per Primary Color
 * 1 0 1 1 _ _ _ _ 10 Bits per Primary Color
 * 1 1 0 0 _ _ _ _ 12 Bits per Primary Color
 * 1 1 0 1 _ _ _ _ 14 Bits per Primary Color
 * 1 1 1 0 _ _ _ _ 16 Bits per Primary Color
 * 1 1 1 1 _ _ _ _ Reserved (Do Not Use)
 * 7 _ _ _ 3 2 1 0 Digital Video Interface Standard Supported: Bits 3 → 0
 * 1 _ _ _ 0 0 0 0 Digital Interface is not defined (see Note 4)
 * 1 _ _ _ 0 0 0 1 DVI is supported
 * 1 _ _ _ 0 0 1 0 HDMI-a is supported
 * 1 _ _ _ 0 0 1 1 HDMI-b is supported
 * 1 _ _ _ 0 1 0 0 MDDI is supported
 * 1 _ _ _ 0 1 0 1 DisplayPort is supported
 * 14h
 * 1 _ _ _ → → → → All remaining values for Bits 3 → 0 are Reserved: Do Not Use
 */
	union VideoInputDefinition inputdef;
	memcpy(&inputdef, &edid[0x14], 1);

	if (inputdef.inputdef_a.analogordigital) {
		printf("\tMonitorType: %s\n", "Digital");
		printf("\tColorBitDepth: %d Bits per Primary Color\n", bitsperprimarycolor[inputdef.inputdef_d.colorbitdepth]);
		printf("\tInterfaceStandardSupported: %s\n", interfacetpye[inputdef.inputdef_d.InterfaceStandardSupported]);
	}
	else {
		printf("\tMonitorType: %s\n","Analogor");
		printf("\tMaxImagesize: %hhdcm x %hhdcm\n", edid[0x15], edid[0x16]);
		printf("\tMonitorGamma: %.2f\n", (edid[0x17] + 100) * 1.0 / 100.0);
	}

	return 0;
}
static int parse_edid_power_support(char edid[])
{
/*
 * Address Bits Definitions Description
 * 7 6 5 _ _ _ _ _ Display Power Management: (See Note 1) Bits 7 → 5
 * 1 _ _ _ _ _ _ _ Standby Mode is supported. Bit 7
 * 0 _ _ _ _ _ _ _ Standby Mode is not supported. Bit 7
 * _ 1 _ _ _ _ _ _ Suspend Mode is supported. Bit 6
 * _ 0 _ _ _ _ _ _ Suspend Mode is not supported. Bit 6
 * _ _ 1 _ _ _ _ _ Active Off = Very Low Power is supported. Bit 5
 * _ _ 0 _ _ _ _ _ Active Off = Very Low Power is not supported. Bit 5
 * 4 3 _ _ _ If bit 7 at address 14h = ‘0’ then bits 4 & 3 at address 18h defines the
 * Display Color Type: (See Note 2) Bits 4 & 3
 * 0 0 _ _ _ Monochrome or Grayscale display
 * 0 1 _ _ _ RGB color display
 * 1 0 _ _ _ Non-RGB color display
 * 1 1 _ _ _ Display Color Type is Undefined
 * 4 3 _ _ _ If bit 7 at address 14h = ‘1’ then bits 4 & 3 at address 18h defines the
 * Supported Color Encoding Format/s: (See Note 2) Bits 4 & 3
 * 0 0 _ _ _ RGB 4:4:4
 * 0 1 _ _ _ RGB 4:4:4 & YCrCb 4:4:4
 * 1 0 _ _ _ RGB 4:4:4 & YCrCb 4:2:2
 * 1 1 _ _ _ RGB 4:4:4 & YCrCb 4:4:4 & YCrCb 4:2:2
 * 2 1 0 Other Feature Support Flags: Bits 2 → 0
 * 1 _ _ sRGB Standard is the default color space. (See Note 3) Bit 2
 * 0 _ _ sRGB Standard is not the default color space. Bit 2
 * _ 1 _ Preferred Timing Mode includes the native pixel format and preferred refresh rate of the display device. (See Note 4) Bit 1
 * _ 0 _ Preferred Timing Mode does not include the native pixel format and preferred refresh rate of the display device. Bit 1
 * _ _ 1 Display is continuous frequency. (See Note 5) Bit 0
 * _ _ 0 Display is non-continuous frequency (multi-mode). Bit 0
*/
	struct PowerManSupport powman;
	memcpy(&powman, &edid[0x18], 1);

	char msg[256];
	memset(msg, 0, sizeof(msg));
	memset(msg, 0, 256);
	if(powman.standby) strcat(msg, "standby ");
	if(powman.suspend) strcat(msg, "suspend ");
	if(powman.activeoff) strcat(msg, "activeoff ");
	if(!(powman.monchrome & 3)) strcat(msg, "monochrome ");
	else if(powman.activeoff & 1) strcat(msg, "RGB ");
	else if(powman.activeoff & 2) strcat(msg, "Non RGB ");
	else if(powman.activeoff & 3) strcat(msg, "Undefineed ");

	printf("\tPowerSupport: %s\n", msg);
	printf("\tChromaInfo: %hhx %hhx %hhx %hhx %hhx %hhx %hhx %hhx %hhx %hhx \n", edid[0x19], edid[0x1a], edid[0x1b], edid[0x1c], edid[0x1d], edid[0x1e], edid[0x1f], edid[0x20], edid[0x21], edid[0x22]);

	return 0;
}

static int parse_edid_established_timing(char edid[])
{
/*
 * 	23h 1 Established Timing I
 * 7 720 x 400 @ 70Hz IBM, VGA
 * 6 720 x 400 @ 88Hz IBM, XGA2
 * 5 640 x 480 @ 60Hz IBM, VGA
 * 4 640 x 480 @ 67Hz Apple, Mac II
 * 3 640 x 480 @ 72Hz VESA
 * 2 640 x 480 @ 75Hz VESA
 * 1 800 x 600 @ 56Hz VESA
 * 0 800 x 600 @ 60Hz VESA
 * 	24h 1 Established Timing II
 * 7 800 x 600 @ 72Hz VESA
 * 6 800 x 600 @ 75Hz VESA
 * 5 832 x 624 @ 75Hz Apple, Mac II
 * 4 1024 x 768 @ 87Hz(I) IBM - Interlaced
 * 3 1024 x 768 @ 60Hz VESA
 * 2 1024 x 768 @ 70Hz VESA
 * 1 1024 x 768 @ 75Hz VESA
 * 0 1280 x 1024 @ 75Hz VESA
 * 	25h 1 Manufacturer's Timings
 * 7 1152 x 870 @ 75Hz Apple, Mac II
 */
	struct mode_line curestmode[80];
	printf("\tEstablishedTiming: \n");
	char es = edid[0x24];
	int escount=0;
	for (int i=0; i < 8; i++) {
		if (es & 0x01) {
			memcpy(&curestmode[escount], &estmode[i], sizeof(struct mode_line));
			escount++;
		}
		es = es >> 1;
	}
	es = edid[0x23];
	for (int i=0; i<8; i++) {
		if (es & 0x01) {
			memcpy(&curestmode[escount], &estmode[i+8], sizeof(struct mode_line));
			escount++;
		}
		es = es >> 1;
	}
	for (int i = 0; i < escount; i++) {
		struct drm_display_mode rmodeline;
		find_est_mode(&curestmode[i], &rmodeline);
		printf("\t\t%s @ %d %d %d %d\n", rmodeline.name, rmodeline.freq, rmodeline.pclock, rmodeline.htot, rmodeline.vtot);
	}

	return 0;
}

static int parse_edid_standar_timing(char edid[])
{
/*
 * 	26h 1 256 pixels → 2288 pixels, in increments of 8 pixels
 * 00h Reserved: Do not use.
 * Bit Definitions Description
 * 7 6 _ _ _ _ _ _ Image Aspect Ratio: bits 7 & 6
 * 0 0 _ _ _ _ _ _ 16 : 10 AR
 * 0 1 _ _ _ _ _ _ 4 : 3 AR
 * 1 0 _ _ _ _ _ _ 5 : 4 AR
 * 1 1 _ _ _ _ _ _ 16 : 9 AR
 * 5 4 3 2 1 0 Field Refresh Rate: bits 5 → 0
 * Value Stored (in binary) = Field Refresh Rate (in Hz) – 60
 * 	27h 1
 * n n n n n n
 * Range: 60 Hz → 123Hz
 */
	struct StdTiming  stdtiminginfo;
	struct mode_line curestmode[80];
	struct mode_line tdmtmode;
	struct drm_display_mode rmodeline;
	char tmod[20];
	char msg[512];
	char ratio[2][6];

	printf("\r\tStandarTiming:\n");
	memset(curestmode, 0, 80 * sizeof(struct mode_line));
	for (int i = 0; i < 8; i++) {
		int tem = 0;
		memcpy(&tem, &edid[38 + 2 * i], 1);
		memcpy(&stdtiminginfo, &edid[39 + 2 * i], 1);
		memset(msg, 0, 256);
		memset(ratio, 0, sizeof(ratio));

		if(!(stdtiminginfo.aspectratio & 3)) strcat(msg, "16:10");
		else if(stdtiminginfo.aspectratio & 1) strcat(msg, "4:3");
		else if(stdtiminginfo.aspectratio & 2) strcat(msg, "5:4");
		else if(stdtiminginfo.aspectratio & 3) strcat(msg, "16:9");
		char *msgp = strstr(msg, ":");
		memcpy(ratio[0], msg, msgp-msg);
		memcpy(ratio[1], msgp+1, strlen(msgp));
		int hratio = atoi(ratio[0]);
		int vratio = atoi(ratio[1]);
		if (tem != 1) {
			memset(&rmodeline, 0, sizeof(struct drm_display_mode));
			memset(&tdmtmode, 0, sizeof(struct mode_line));
			memset(tmod, 0, 20);
			//sprintf(tmod,"%dx%d",tem*8+248, (int)(((tem*8+248)*1.0*vratio+0.5)/hratio),stdtiminginfo.vertfrequency+60);
			sprintf(tmod, "%dx%d", tem * 8 + 248, (int)(((tem * 8 + 248) * 1.0 * vratio + 0.5) / hratio));
			strcat(tdmtmode.mode , tmod);
			tdmtmode.freq = stdtiminginfo.vertfrequency + 60;

			find_dmt_mode(&tdmtmode, &rmodeline);

			printf("\t\t%s @ %d %d %d %d (%s)\n", rmodeline.name, rmodeline.freq, rmodeline.pclock, rmodeline.htot, rmodeline.vtot, msg);
		}
	}
	return 0;
}
static int parse_edid_detail_timing(char edid[])
{
	union PixelClock pixclk;
	union Disp vdisp;
	union Sync sync;

	memset(&pixclk, 0, sizeof(union PixelClock));

	for(int i = 0; i < 4; i++) {
		int Hdisp, Vdisp, Hblank, Vblank;
		float freq;
		pixclk.clkchr.clkl = edid[0x36 + i*18];
		pixclk.clkchr.clkh = edid[0x37 + i*18];
		if (pixclk.clk == 0) continue;

		union H4bit h4bit;
		vdisp.vdispchr.vdispl = edid[0x36 + i*18 + 2];
		h4bit.value = edid[0x36 + i*18 + 4];
		vdisp.vdispchr.vdispl = edid[0x36+ i*18 + 2];
		vdisp.vdispchr.vdisph = h4bit.h4bitchr.disp;
		Hdisp = vdisp.value;

		memset(&h4bit, 0, 1);
		memset(&vdisp, 0, 4);
		vdisp.vdispchr.vdispl=edid[0x36+ i*18 + 5];
		h4bit.value = edid[0x36+ i*18 + 7];
		vdisp.vdispchr.vdispl = edid[0x36+ i*18 + 5];
		vdisp.vdispchr.vdisph = h4bit.h4bitchr.disp;
		Vdisp = vdisp.value;

		memset(&h4bit,0,1);
		memset(&vdisp,0,4);
		vdisp.vdispchr.vdispl = edid[0x36+ i*18 + 3];
		h4bit.value = edid[0x36+ i*18 + 4];
		vdisp.vdispchr.vdispl = edid[0x36+ i*18 + 3];
		vdisp.vdispchr.vdisph = h4bit.h4bitchr.blank;
		Hblank = vdisp.value;

		memset(&h4bit,0,1);
		memset(&vdisp,0,4);
		vdisp.vdispchr.vdispl = edid[0x36+ i*18 + 6];
		h4bit.value = edid[0x36+ i*18 + 7];
		vdisp.vdispchr.vdispl = edid[0x36+ i*18 + 6];
		vdisp.vdispchr.vdisph = h4bit.h4bitchr.blank;
		Vblank = vdisp.value;
		freq = pixclk.clk * 10000.0 / (Hdisp+Hblank) / (Vdisp+Vblank);

		printf("\tDetailTiming:\n\t\t%dx%d @ %.2f %d %d %d\n", Hdisp, Vdisp, freq, pixclk.clk * 10, Hdisp + Hblank, Vdisp + Vblank);

		union H2bit h2bit;
		h2bit.value = edid[0x36 + i*18 + 11];
		memset(&sync, 0, 4);
		sync.syncchr.syncl = edid[0x36 + i*18 + 8];
		sync.syncchr.synch = h2bit.chr.vsync;
	}
	return 0;
}

static int parse_edid_hdmi_bpp(char edid[])
{
/*
 * Extended block for HDMI
 */

	int phdmiindex = gethdmiblock(edid);
	if (phdmiindex != -1) {
		printf("\tHaving a hdmi block, start position is:%2hhx\n", phdmiindex);
		char bppbyte = edid[phdmiindex + 5];
		for (int i = 0; i < 8; i++) {
			if (bppbyte & 0x01) {
				printf("\tHDMI bpp supports: %s\n", bppinfo[i]);
			}
			bppbyte = bppbyte >> 1;
		}
	}
	return 0;
}

static int parse_edid(char edid[])
{
	if (check_edid(edid))
		return 1;

	parse_edid_vendor_product(edid);

	parse_edid_video_input(edid);

	parse_edid_power_support(edid);

	parse_edid_established_timing(edid);

	parse_edid_standar_timing(edid);

	parse_edid_detail_timing(edid);

	parse_edid_hdmi_bpp(edid);

	return 0;
}

int main(void)
{
	int connected_count;
	char **edid_list;
	char **connected_card_list;

	connected_count = get_connected_edid_list( & edid_list);
	connected_count = get_connected_card_list( & connected_card_list );

	printf("\33[1;;32mThe connected monitor number:  %d\n\33[0m", connected_count);

	for (int i = 0; i < connected_count; i++) {
		printf("\33[1;;32m%d. Connected monitor card:  %s\n\33[0m", i + 1, connected_card_list[i]);

		print_edid(edid_list[i]);

		parse_edid(edid_list[i]);
	}

	return 0;
}