| 1 | /*␊ |
| 2 | * edid.h␊ |
| 3 | * ␊ |
| 4 | *␊ |
| 5 | * Created by Evan Lojewski on 12/1/09.␊ |
| 6 | * Copyright 2009. All rights reserved.␊ |
| 7 | *␊ |
| 8 | */␊ |
| 9 | //#ifndef __EDID_H__␊ |
| 10 | //#define __EDID_H__␊ |
| 11 | ␊ |
| 12 | ␊ |
| 13 | #include "libsaio.h"␊ |
| 14 | ␊ |
| 15 | #define EDID_BLOCK_SIZE␉128␊ |
| 16 | #define EDID_V1_BLOCKS_TO_GO_OFFSET 126␊ |
| 17 | //Slice - some more info aabout EDID␊ |
| 18 | #define EDID_LENGTH␉␉␉␉0x80␊ |
| 19 | #define EDID_HEADER␉␉␉␉0x00␊ |
| 20 | #define EDID_HEADER_END␉␉␉␉0x07␊ |
| 21 | ␊ |
| 22 | #define ID_MANUFACTURER_NAME␉␉␉0x08␊ |
| 23 | #define ID_MANUFACTURER_NAME_END␉␉0x09␊ |
| 24 | #define ID_MODEL␉␉␉␉0x0a␊ |
| 25 | ␊ |
| 26 | #define ID_SERIAL_NUMBER␉␉␉0x0c␊ |
| 27 | ␊ |
| 28 | #define MANUFACTURE_WEEK␉␉␉0x10␊ |
| 29 | #define MANUFACTURE_YEAR␉␉␉0x11␊ |
| 30 | ␊ |
| 31 | #define EDID_STRUCT_VERSION␉␉␉0x12␊ |
| 32 | #define EDID_STRUCT_REVISION␉␉␉0x13␊ |
| 33 | ␊ |
| 34 | #define EDID_STRUCT_DISPLAY 0x14␊ |
| 35 | ␊ |
| 36 | #define DPMS_FLAGS␉␉␉␉0x18␊ |
| 37 | #define ESTABLISHED_TIMING_1␉␉␉0x23␊ |
| 38 | #define ESTABLISHED_TIMING_2␉␉␉0x24␊ |
| 39 | #define MANUFACTURERS_TIMINGS␉␉␉0x25␊ |
| 40 | ␊ |
| 41 | /* standard timings supported */␊ |
| 42 | #define STD_TIMING 8␊ |
| 43 | #define STD_TIMING_DESCRIPTION_SIZE 2␊ |
| 44 | #define STD_TIMING_DESCRIPTIONS_START 0x26␊ |
| 45 | ␊ |
| 46 | #define DETAILED_TIMING_DESCRIPTIONS_START␉0x36␊ |
| 47 | #define DETAILED_TIMING_DESCRIPTION_SIZE␉18␊ |
| 48 | #define NO_DETAILED_TIMING_DESCRIPTIONS␉␉4␊ |
| 49 | ␊ |
| 50 | #define DETAILED_TIMING_DESCRIPTION_1␉␉0x36␊ |
| 51 | #define DETAILED_TIMING_DESCRIPTION_2␉␉0x48␊ |
| 52 | #define DETAILED_TIMING_DESCRIPTION_3␉␉0x5a␊ |
| 53 | #define DETAILED_TIMING_DESCRIPTION_4␉␉0x6c␊ |
| 54 | ␊ |
| 55 | #define DESCRIPTOR_DATA␉␉␉␉5␊ |
| 56 | ␊ |
| 57 | #define UPPER_NIBBLE( x ) \␊ |
| 58 | (((128|64|32|16) & (x)) >> 4)␊ |
| 59 | ␊ |
| 60 | #define LOWER_NIBBLE( x ) \␊ |
| 61 | ((1|2|4|8) & (x))␊ |
| 62 | ␊ |
| 63 | #define COMBINE_HI_8LO( hi, lo ) \␊ |
| 64 | ( (((unsigned)hi) << 8) | (unsigned)lo )␊ |
| 65 | ␊ |
| 66 | #define COMBINE_HI_4LO( hi, lo ) \␊ |
| 67 | ( (((unsigned)hi) << 4) | (unsigned)lo )␊ |
| 68 | ␊ |
| 69 | #define PIXEL_CLOCK_LO (unsigned)block[ 0 ]␊ |
| 70 | #define PIXEL_CLOCK_HI (unsigned)block[ 1 ]␊ |
| 71 | #define PIXEL_CLOCK␉ (COMBINE_HI_8LO( PIXEL_CLOCK_HI,PIXEL_CLOCK_LO )*10000)␊ |
| 72 | #define H_ACTIVE_LO (unsigned)block[ 2 ]␊ |
| 73 | #define H_BLANKING_LO (unsigned)block[ 3 ]␊ |
| 74 | #define H_ACTIVE_HI UPPER_NIBBLE( (unsigned)block[ 4 ] )␊ |
| 75 | #define H_ACTIVE COMBINE_HI_8LO( H_ACTIVE_HI, H_ACTIVE_LO )␊ |
| 76 | #define H_BLANKING_HI LOWER_NIBBLE( (unsigned)block[ 4 ] )␊ |
| 77 | #define H_BLANKING COMBINE_HI_8LO( H_BLANKING_HI, H_BLANKING_LO )␊ |
| 78 | ␊ |
| 79 | #define V_ACTIVE_LO (unsigned)block[ 5 ]␊ |
| 80 | #define V_BLANKING_LO (unsigned)block[ 6 ]␊ |
| 81 | #define V_ACTIVE_HI UPPER_NIBBLE( (unsigned)block[ 7 ] )␊ |
| 82 | #define V_ACTIVE COMBINE_HI_8LO( V_ACTIVE_HI, V_ACTIVE_LO )␊ |
| 83 | #define V_BLANKING_HI LOWER_NIBBLE( (unsigned)block[ 7 ] )␊ |
| 84 | #define V_BLANKING COMBINE_HI_8LO( V_BLANKING_HI, V_BLANKING_LO )␊ |
| 85 | ␊ |
| 86 | #define H_SYNC_OFFSET_LO (unsigned)block[ 8 ]␊ |
| 87 | #define H_SYNC_WIDTH_LO (unsigned)block[ 9 ]␊ |
| 88 | ␊ |
| 89 | #define V_SYNC_OFFSET_LO UPPER_NIBBLE( (unsigned)block[ 10 ] )␊ |
| 90 | #define V_SYNC_WIDTH_LO LOWER_NIBBLE( (unsigned)block[ 10 ] )␊ |
| 91 | ␊ |
| 92 | #define V_SYNC_WIDTH_HI ((unsigned)block[ 11 ] & (1|2))␊ |
| 93 | #define V_SYNC_OFFSET_HI (((unsigned)block[ 11 ] & (4|8)) >> 2)␊ |
| 94 | ␊ |
| 95 | #define H_SYNC_WIDTH_HI (((unsigned)block[ 11 ] & (16|32)) >> 4)␊ |
| 96 | #define H_SYNC_OFFSET_HI (((unsigned)block[ 11 ] & (64|128)) >> 6)␊ |
| 97 | ␊ |
| 98 | #define V_SYNC_WIDTH COMBINE_HI_4LO( V_SYNC_WIDTH_HI, V_SYNC_WIDTH_LO )␊ |
| 99 | #define V_SYNC_OFFSET COMBINE_HI_4LO( V_SYNC_OFFSET_HI, V_SYNC_OFFSET_LO )␊ |
| 100 | ␊ |
| 101 | #define H_SYNC_WIDTH COMBINE_HI_4LO( H_SYNC_WIDTH_HI, H_SYNC_WIDTH_LO )␊ |
| 102 | #define H_SYNC_OFFSET COMBINE_HI_4LO( H_SYNC_OFFSET_HI, H_SYNC_OFFSET_LO )␊ |
| 103 | ␊ |
| 104 | #define H_SIZE_LO (unsigned)block[ 12 ]␊ |
| 105 | #define V_SIZE_LO (unsigned)block[ 13 ]␊ |
| 106 | ␊ |
| 107 | #define H_SIZE_HI UPPER_NIBBLE( (unsigned)block[ 14 ] )␊ |
| 108 | #define V_SIZE_HI LOWER_NIBBLE( (unsigned)block[ 14 ] )␊ |
| 109 | ␊ |
| 110 | #define H_SIZE COMBINE_HI_8LO( H_SIZE_HI, H_SIZE_LO )␊ |
| 111 | #define V_SIZE COMBINE_HI_8LO( V_SIZE_HI, V_SIZE_LO )␊ |
| 112 | ␊ |
| 113 | #define H_BORDER (unsigned)block[ 15 ]␊ |
| 114 | #define V_BORDER (unsigned)block[ 16 ]␊ |
| 115 | ␊ |
| 116 | #define FLAGS (unsigned)block[ 17 ]␊ |
| 117 | ␊ |
| 118 | #define INTERLACED (FLAGS&128)␊ |
| 119 | #define SYNC_TYPE (FLAGS&3<<3)␉/* bits 4,3 */␊ |
| 120 | #define SYNC_SEPARATE (3<<3)␊ |
| 121 | #define HSYNC_POSITIVE (FLAGS & 4)␊ |
| 122 | #define VSYNC_POSITIVE (FLAGS & 2)␊ |
| 123 | ␊ |
| 124 | #define V_MIN_RATE block[ 5 ]␊ |
| 125 | #define V_MAX_RATE block[ 6 ]␊ |
| 126 | #define H_MIN_RATE block[ 7 ]␊ |
| 127 | #define H_MAX_RATE block[ 8 ]␊ |
| 128 | #define MAX_PIXEL_CLOCK (((int)block[ 9 ]) * 10)␊ |
| 129 | #define GTF_SUPPORT␉␉block[10]␊ |
| 130 | ␊ |
| 131 | #define DPMS_ACTIVE_OFF␉␉(1 << 5)␊ |
| 132 | #define DPMS_SUSPEND␉␉(1 << 6)␊ |
| 133 | #define DPMS_STANDBY␉␉(1 << 7)␊ |
| 134 | ␊ |
| 135 | struct EDID␊ |
| 136 | {␊ |
| 137 | UInt8␉header[8];␉␉␉//0␊ |
| 138 | UInt8␉vendorProduct[4];␉//8␊ |
| 139 | UInt8␉serialNumber[4];␉//12␊ |
| 140 | UInt8␉weekOfManufacture;␉//16␊ |
| 141 | UInt8␉yearOfManufacture;␉//17␊ |
| 142 | UInt8␉version;␉␉␉//18␊ |
| 143 | UInt8␉revision;␉␉␉//19␊ |
| 144 | UInt8␉displayParams[5];␉//20␊ |
| 145 | UInt8␉colorCharacteristics[10];␉//25␊ |
| 146 | UInt8␉establishedTimings[3];␉␉//35␊ |
| 147 | UInt16␉standardTimings[8];␉␉␉//38␊ |
| 148 | UInt8␉detailedTimings[72];␉␉//54␊ |
| 149 | UInt8␉extension;␉␉␉␉␉//126␊ |
| 150 | UInt8␉checksum;␉␉␉␉␉//127␊ |
| 151 | };␊ |
| 152 | ␊ |
| 153 | char* readEDID();␊ |
| 154 | void getResolution(UInt32* x, UInt32* y, UInt32* bp);␊ |
| 155 | ␊ |
| 156 | //#endif |
