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XvQueryEncodings - ?????ץ????б????Ƥ??륨?󥳡??ǥ??󥰤Υꥹ?Ȥ??֤?

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#include <X11/extensions/Xvlib.h>

XvQueryEncodings(dpy, port, p_num_encodings, pp_encoding_info)

register Display *dpy;
XvPortID port;
unsigned long *p_num_encodings;
XvEncodingInfo **pp_encoding_info;

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*dpy

Xv ?????Ф? Xv ???饤?????Ȥ????Υꥯ?????Ȥ??????դ????ǥ????ץ쥤???? ?????ꤹ?롣?ǥ????ץ쥤?????ꤹ?륪?ץ????󤬻??ꤵ???Ƥ??ʤ????С?Xv ?? DISPLAY ?Ķ??ѿ??ǻ??ꤵ???Ƥ????ǥ????ץ쥤???Ȥ????ǥ????ץ쥤 ???ꥪ?ץ??????ϡ֥ۥ???̾:?ֹ??פȤ????????Ǥ??롣?????? 1 ??(:)?Ǥ? ?????????? 2 ??(::)???Ȥä??????ˤϡ??ȥ??󥹥ݡ????ؤ? DECnet ???Ȥ? ???Ȥ????ꤵ???롣

port

???󥳡??ǥ??󥰤Υꥹ?Ȥ??䤤???碌?륢???ץ??????ĥݡ??Ȥ????ꤹ?롣

p_num_encodings

?????ץ??????ݡ??Ȥ??Ƥ??륨?󥳡??ǥ??󥰤ο??ؤΥݥ??󥿤??񤭹??ޤ? ?롣

pp_encoding_info

?֤????륨?󥳡??ǥ??󥰾????Υꥹ?ȤؤΥݥ??󥿤??֤????롣 XvEncodingInfo ?ϡ??ʲ??????Ƥ????Ĺ?¤?ΤǤ???:

    typedef struct {


      XvEncodingID encoding_id;


      char *name;


      unsigned long width;


      unsigned long height;


      XvRational rate;


      unsigned long num_encodings;


    } XvEncodingInfo;
    

encoding_id

???󥳡??ǥ??󥰤? ID ?????ꤹ?롣???󥳡??ǥ????? ID ?ϡ??ݡ??Ȥ? ???󥳡??ǥ?????°?????Ѳ????????˥??󥳡??ǥ??󥰤????̤??뤿???˻Ȥ? ???롣

name

???󥳡??ǥ??󥰤????̤??뤿???????????줿ʸ?????ؤΥݥ??󥿡?????ʸ?? ???? "?????ߥ???-?????ʥ??μ???" ?Ȥ????????Ǥ??롣?㤨?? "ntsc-composite" ?ʤɤǤ??롣

width,height

?ǥ????ɤ??????ӥǥ????᡼???????ȹ⤵(?ԥ?????ñ??)??

rate

?ǥ????ɤ??????ӥǥ??Υե??????ɥ졼?ȡ?

XvRational ??¤?Τϡ?ʬ???????ꤹ?뤿?????Ѥ??롣 ?????ϰʲ??Τ褦?ʹ?¤?ΤǤ???:

    typedef struct {


      int numerator;


      int denominator;


    } XvRational;

numerator ??ʬ?Ҥ?ɽ????denominator ??ʬ????ɽ????

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XvQueryEncodings(3X) ?ϥ????ץ??ˤĤ??ƤΥ??󥳡??ǥ??󥰾??????֤??? ???줾???Υ??󥳡??ǥ??󥰤ϡ????Ҥ? XvEncodingInfo ??¤?Τˤ??äƵ??? ?????롣???󥳡??ǥ??󥰤ϥ??󥳡??ǥ????? ID ?ˤ??äƼ??̤????롣???? ?ͤ??Ȥ??ȥݡ??ȤΥ??󥳡??ǥ?????°?????????????????Ԥ????Ȥ??Ǥ??롣

?֤???¶

[Success]

XvQueryEncodings(3X) ???????˽?λ???????????֤????롣

[XvBadExtension]

Xv ??ǽ??ĥ?????ѤǤ??ʤ????????֤????롣

[XvBadAlloc]

XvQueryEncodings(3X) ???ꥯ?????Ȥ????????뤿???Υ??????γ??????Ƥ˼? ?Ԥ??????????֤????롣

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[XvBadPort]

?׵ᤵ?줿?ݡ??Ȥ?¸?ߤ??ʤ????????????????롣

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XvFreeEncodingInfo(3X)