95 lines
2.9 KiB
Groff
95 lines
2.9 KiB
Groff
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.TH XvSetPortAttribute __libmansuffix__ __vendorversion__
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.\" $XFree86: xc/doc/man/Xv/XvSetPortAttribute.man,v 1.6 2001/01/27 18:20:36 dawes Exp $
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.SH Name
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XvSetPortAttribute \- sets an attribute of a video port
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.\"
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.SH Syntax
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\fB#include <X11/extensions/Xvlib.h>\fR
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.sp 1l
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\fBXvSetPortAttribute(\fIdpy, port, attribute, value\fR)
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.sp 1l
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\fBDisplay \fI*dpy\fR;
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.br
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\fBXvPortID \fIport\fR;
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.br
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\fBAtom \fIattribute\fR;
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.br
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\fBint \fIvalue\fR;
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.SH Arguments
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.\"
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.IP \fIdpy\fR 15
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Specifies the connection to the X server.
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.IP \fIport\fR 15
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Specifies the port for which the attribute is to be used.
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.IP \fIattribute\fR 15
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Identifies the port attribute to be set by this request.
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Can be one of the table entries under the column "String," below.
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.IP \fIvalue\fR 15
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Identifies the value to which \fIattribute\fP is to be set.
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Can be one of the table entries under the column "Type," below.
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.\"
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.SH Description
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XvSetPortAttribute(__libmansuffix__) permits a client to set the port attribute
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to specified values. This request supports the following values:
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.bp
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.PP
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.\" .TS
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.\" tab(@);
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.\" lfHB lfHB lfHB
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.\" lfR lfR lfR .
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.\" _
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.\" .PP
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.\" .sp 4p
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.\" Attribute String@Type@Default
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.\" .sp 6p
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.\" _
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.\" .sp 6p
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.\" "XV_ENCODING"@XvEncodingID@Server dependent
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.\" "XV_HUE"@[-1000...1000]@0
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.\" "XV_SATURATION"@[-1000...1000]@0
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.\" "XV_BRIGHTNESS"@[-1000...1000]@0
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.\" "XV_CONTRAST"@[-1000...1000]@0
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.\" .sp 6p
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.\" .TE
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.nf
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Attribute String Type Default
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"XV_ENCODING" XvEncodingID Server dependent
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"XV_HUE" [-1000...1000] 0
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"XV_SATURATION" [-1000...1000] 0
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"XV_BRIGHTNESS" [-1000...1000] 0
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"XV_CONTRAST" [-1000...1000] 0
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.fi
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.PP
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The supplied encoding must be one of the encodings listed for the
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adaptor, otherwise an Encoding error results.
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.PP
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If the adaptor does not support the exact hue, saturation,
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brightness, and contrast levels supplied, the closest levels
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supported are assumed. Use XvGetPortAttribute(__libmansuffix__)
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to query the resulting levels.
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.PP
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When an XvSetPortAttribute(__libmansuffix__) request is processed, a
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PortControlNotify(__libmansuffix__) event is generated for all clients
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that have requested for port changes using XvSelectPortNotify(__libmansuffix__).
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.SH Returned Values
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.IP [Success] 8
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Returned if XvSetPortAttribute(__libmansuffix__) completed successfully.
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.IP [XvBadExtension] 8
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Returned if the Xv extension is unavailable.
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.IP [XvBadAlloc] 8
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Returned if XvSelectVideoNotify(__libmansuffix__) failed to allocate memory to process
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the request.
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.SH Diagnostics
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.IP [XvBadPort] 8
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Generated if the requested port does not exist.
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.IP [XvBadEncoding] 8
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Generated if an encoding is specified that does not exist.
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.IP [BadMatch] 8
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Generated if the requested attribute atom does not specify an attribute
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supported by the adaptor.
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.SH See Also
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.\"
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XvGetPortAttribute(__libmansuffix__), XvSelectPortNotify(__libmansuffix__), XvPortNotify(__libmansuffix__)
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.br
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