edid.h
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typedef unsigned char uchar;
typedef struct MonitorInfo MonitorInfo;
typedef struct Timing Timing;
typedef struct DetailedTiming DetailedTiming;
typedef enum
{
UNDEFINED,
DVI,
HDMI_A,
HDMI_B,
MDDI,
DISPLAY_PORT
} Interface;
typedef enum
{
UNDEFINED_COLOR,
MONOCHROME,
RGB,
OTHER_COLOR
} ColorType;
typedef enum
{
NO_STEREO,
FIELD_RIGHT,
FIELD_LEFT,
TWO_WAY_RIGHT_ON_EVEN,
TWO_WAY_LEFT_ON_EVEN,
FOUR_WAY_INTERLEAVED,
SIDE_BY_SIDE
} StereoType;
struct Timing
{
int width;
int height;
int frequency;
};
struct DetailedTiming
{
int pixel_clock;
int h_addr;
int h_blank;
int h_sync;
int h_front_porch;
int v_addr;
int v_blank;
int v_sync;
int v_front_porch;
int width_mm;
int height_mm;
int right_border;
int top_border;
int interlaced;
StereoType stereo;
int digital_sync;
union
{
struct
{
int bipolar;
int serrations;
int sync_on_green;
} analog;
struct
{
int composite;
int serrations;
int negative_vsync;
int negative_hsync;
} digital;
};
};
struct MonitorInfo
{
int checksum;
char manufacturer_code[4];
int product_code;
unsigned int serial_number;
int production_week; /* -1 if not specified */
int production_year; /* -1 if not specified */
int model_year; /* -1 if not specified */
int major_version;
int minor_version;
int is_digital;
union
{
struct
{
int bits_per_primary;
Interface interface;
int rgb444;
int ycrcb444;
int ycrcb422;
} digital;
struct
{
double video_signal_level;
double sync_signal_level;
double total_signal_level;
int blank_to_black;
int separate_hv_sync;
int composite_sync_on_h;
int composite_sync_on_green;
int serration_on_vsync;
ColorType color_type;
} analog;
};
int width_mm; /* -1 if not specified */
int height_mm; /* -1 if not specified */
double aspect_ratio; /* -1.0 if not specififed */
double gamma; /* -1.0 if not specified */
int standby;
int suspend;
int active_off;
int srgb_is_standard;
int preferred_timing_includes_native;
int continuous_frequency;
double red_x;
double red_y;
double green_x;
double green_y;
double blue_x;
double blue_y;
double white_x;
double white_y;
Timing established[24]; /* Terminated by 0x0x0 */
Timing standard[8];
int n_detailed_timings;
DetailedTiming detailed_timings[4]; /* If monitor has a preferred
* mode, it is the first one
* (whether it has, is
* determined by the
* preferred_timing_includes
* bit.
*/
/* Optional product description */
char dsc_serial_number[14];
char dsc_product_name[14];
char dsc_string[14]; /* Unspecified ASCII data */
};
MonitorInfo *decode_edid (const uchar *data);
void dump_monitor_info (MonitorInfo *info);
char * make_display_name (const char *output_name,
const MonitorInfo *info);