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59 lines
1.9 KiB
C
59 lines
1.9 KiB
C
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/* xf86DDC.h
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*
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* This file contains all information to interpret a standard EDIC block
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* transmitted by a display device via DDC (Display Data Channel). So far
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* there is no information to deal with optional EDID blocks.
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* DDC is a Trademark of VESA (Video Electronics Standard Association).
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*
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* Copyright 1998 by Egbert Eich <Egbert.Eich@Physik.TU-Darmstadt.DE>
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*/
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#ifndef XF86_DDC_H
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#define XF86_DDC_H
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#include "edid.h"
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#include "xf86i2c.h"
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#include "xf86str.h"
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/* speed up / slow down */
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typedef enum {
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DDC_SLOW,
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DDC_FAST
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} xf86ddcSpeed;
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typedef void (*DDC1SetSpeedProc) (ScrnInfoPtr, xf86ddcSpeed);
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extern _X_EXPORT xf86MonPtr xf86DoEDID_DDC1(ScrnInfoPtr pScrn,
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DDC1SetSpeedProc DDC1SetSpeed,
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unsigned
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int (*DDC1Read) (ScrnInfoPtr)
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);
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extern _X_EXPORT xf86MonPtr xf86DoEDID_DDC2(ScrnInfoPtr pScrn, I2CBusPtr pBus);
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extern _X_EXPORT xf86MonPtr xf86DoEEDID(ScrnInfoPtr pScrn, I2CBusPtr pBus, Bool);
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extern _X_EXPORT xf86MonPtr xf86PrintEDID(xf86MonPtr monPtr);
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extern _X_EXPORT xf86MonPtr xf86InterpretEDID(int screenIndex, uint8_t * block);
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extern _X_EXPORT xf86MonPtr xf86InterpretEEDID(int screenIndex, uint8_t * block);
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extern _X_EXPORT Bool xf86SetDDCproperties(ScrnInfoPtr pScreen, xf86MonPtr DDC);
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/*
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* parse EDID block and return a newly allocated xf86Monitor
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*
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* the data block will be copied into the structure (actually right after the struct)
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* and thus automatically be freed when the returned struct is freed.
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*
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* @param screenIndex index of the screen, will be recorded in the xf86Monitor
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* @param block the EDID block to parse
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* @param size size of the EDID block (128 or larger for extended types)
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* @return newly allocated xf86MonRec or NULL on failure
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*/
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_X_EXPORT xf86MonPtr xf86ParseEDID(ScrnInfoPtr pScreen, uint8_t *block, size_t size);
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#endif
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