SDL  2.0
edid.h
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1 typedef unsigned char uchar;
2 typedef struct MonitorInfo MonitorInfo;
3 typedef struct Timing Timing;
4 typedef struct DetailedTiming DetailedTiming;
5 
6 typedef enum
7 {
8  UNDEFINED,
9  DVI,
10  HDMI_A,
11  HDMI_B,
12  MDDI,
13  DISPLAY_PORT
14 } Interface;
15 
16 typedef enum
17 {
18  UNDEFINED_COLOR,
19  MONOCHROME,
20  RGB,
21  OTHER_COLOR
22 } ColorType;
23 
24 typedef enum
25 {
26  NO_STEREO,
27  FIELD_RIGHT,
28  FIELD_LEFT,
29  TWO_WAY_RIGHT_ON_EVEN,
30  TWO_WAY_LEFT_ON_EVEN,
31  FOUR_WAY_INTERLEAVED,
32  SIDE_BY_SIDE
33 } StereoType;
34 
35 struct Timing
36 {
37  int width;
38  int height;
39  int frequency;
40 };
41 
42 struct DetailedTiming
43 {
44  int pixel_clock;
45  int h_addr;
46  int h_blank;
47  int h_sync;
48  int h_front_porch;
49  int v_addr;
50  int v_blank;
51  int v_sync;
52  int v_front_porch;
53  int width_mm;
54  int height_mm;
55  int right_border;
56  int top_border;
57  int interlaced;
58  StereoType stereo;
59 
60  int digital_sync;
61  union
62  {
63  struct
64  {
65  int bipolar;
66  int serrations;
67  int sync_on_green;
68  } analog;
69 
70  struct
71  {
72  int composite;
73  int serrations;
74  int negative_vsync;
75  int negative_hsync;
76  } digital;
77  } ad;
78 };
79 
80 struct MonitorInfo
81 {
82  int checksum;
83  char manufacturer_code[4];
84  int product_code;
85  unsigned int serial_number;
86 
87  int production_week; /* -1 if not specified */
88  int production_year; /* -1 if not specified */
89  int model_year; /* -1 if not specified */
90 
91  int major_version;
92  int minor_version;
93 
94  int is_digital;
95 
96  union
97  {
98  struct
99  {
100  int bits_per_primary;
101  Interface interface;
102  int rgb444;
103  int ycrcb444;
104  int ycrcb422;
105  } digital;
106 
107  struct
108  {
109  double video_signal_level;
110  double sync_signal_level;
111  double total_signal_level;
112 
113  int blank_to_black;
114 
115  int separate_hv_sync;
116  int composite_sync_on_h;
117  int composite_sync_on_green;
118  int serration_on_vsync;
119  ColorType color_type;
120  } analog;
121  } ad;
122 
123  int width_mm; /* -1 if not specified */
124  int height_mm; /* -1 if not specified */
125  double aspect_ratio; /* -1.0 if not specififed */
126 
127  double gamma; /* -1.0 if not specified */
128 
129  int standby;
130  int suspend;
131  int active_off;
132 
133  int srgb_is_standard;
134  int preferred_timing_includes_native;
135  int continuous_frequency;
136 
137  double red_x;
138  double red_y;
139  double green_x;
140  double green_y;
141  double blue_x;
142  double blue_y;
143  double white_x;
144  double white_y;
145 
146  Timing established[24]; /* Terminated by 0x0x0 */
147  Timing standard[8];
148 
149  int n_detailed_timings;
150  DetailedTiming detailed_timings[4]; /* If monitor has a preferred
151  * mode, it is the first one
152  * (whether it has, is
153  * determined by the
154  * preferred_timing_includes
155  * bit.
156  */
157 
158  /* Optional product description */
159  char dsc_serial_number[14];
160  char dsc_product_name[14];
161  char dsc_string[14]; /* Unspecified ASCII data */
162 };
163 
164 MonitorInfo *decode_edid (const uchar *data);
165 void dump_monitor_info (MonitorInfo *info);
166 char * make_display_name (const char *output_name,
167  const MonitorInfo *info);