EDID parsing functionality

Enumerations
enum	Libedid_consts { Libedid_block_size = 128 }
	EDID constants. More...

Functions
int	libedid_check_header (const unsigned char *edid)
	Check for valid EDID header.
int	libedid_checksum (const unsigned char *edid)
	Calculates the EDID checksum.
unsigned	libedid_version (const unsigned char *edid)
	Returns the EDID version number.
unsigned	libedid_revision (const unsigned char *edid)
	Returns the EDID revision number.
void	libedid_pnp_id (const unsigned char *edid, unsigned char *id)
	Extracts the display's PnP ID.
void	libedid_prefered_resolution (const unsigned char *edid, unsigned *w, unsigned *h)
	Extract the display's prefered mode.
unsigned	libedid_num_ext_blocks (const unsigned char *edid)
	Get the number of EDID extension blocks.
unsigned	libedid_dump_standard_timings (const unsigned char *edid)
	Dump the standard timings to stdout.
void	libedid_dump (const unsigned char *edid)
	Dump raw EDID data to stdout.

Detailed Description

Enumeration Type Documentation

Libedid_consts

enum Libedid_consts

EDID constants.

Enumerator
Libedid_block_size	Size of one EDID block in bytes.

Definition at line 23 of file edid.h.

Function Documentation

libedid_check_header()

int libedid_check_header

(

const unsigned char *

edid

)

Check for valid EDID header.

Parameters

edid	Pointer to a 128byte EDID block

Returns

0 if the header is correct, -EINVAL otherwise

libedid_checksum()

int libedid_checksum

(

const unsigned char *

edid

)

Calculates the EDID checksum.

Parameters

edid	Pointer to a 128byte EDID block

Returns

0 if checksum is correct, -EINVAL otherwise

libedid_dump()

void libedid_dump

(

const unsigned char *

edid

)

Dump raw EDID data to stdout.

Parameters

edid	Pointer to a 128byte EDID block

libedid_dump_standard_timings()

unsigned libedid_dump_standard_timings

(

const unsigned char *

edid

)

Dump the standard timings to stdout.

Parameters

edid	Pointer to a 128byte EDID block

Returns

Number of standard timings stored in EDID

libedid_num_ext_blocks()

unsigned libedid_num_ext_blocks

(

const unsigned char *

edid

)

Get the number of EDID extension blocks.

Parameters

edid	Pointer to a 128byte EDID block

Returns

Number of EDID extension blocks

libedid_pnp_id()

void libedid_pnp_id	(	const unsigned char *	edid,
		unsigned char *	id )

Extracts the display's PnP ID.

Parameters

	edid	Pointer to a 128byte EDID block
[out]	id	Return the PnP id. Must point to 4 bytes.

libedid_prefered_resolution()

void libedid_prefered_resolution	(	const unsigned char *	edid,
		unsigned *	w,
		unsigned *	h )

Extract the display's prefered mode.

Parameters

	edid	Pointer to a 128byte EDID block
[out]	w	X resolution of prefered video mode in pixels.
[out]	h	Y resolution of prefered video mode in pixels.

libedid_revision()

unsigned libedid_revision

(

const unsigned char *

edid

)

Returns the EDID revision number.

Parameters

edid	Pointer to a 128 EDID block

Returns

Revision number

libedid_version()

unsigned libedid_version

(

const unsigned char *

edid

)

Returns the EDID version number.

Parameters

edid	Pointer to a 128byte EDID block

Returns

Version number