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XvPutStill - write a single frame of video to a drawable
XvPutStill(dpy, port, d, gc, vx, vy, vw, vh, dx,
dy, dw, dh)
int vx, vy, dx, dy;
unsigned int vw, vh;
unsigned int dw, dh;
- Specifies the display screen on which
the Xv Server is to accept requests from Xv clients. If the display option
is not specified, Xv uses the display screen specified by your DISPLAY
environment variable. The display option has the format hostname:number.
Using two colons (::) instead of one (:) indicates that DECnet is to be
used for transport.
- Defines the port from which to get the still.
the drawable into which the still is to be written. Pixmaps are currently
- Defines the graphical context. GC components are: subwindow-mode,
clip-x-origin, clip-y-origin, and clip-mask.
- Define the location
and size of the video region to be written. vx and vy define the upper-left
pixel of the region. vw and vh define the width and height, in pixels, of
- Define the location and size of the destination region
into which the still image is written. dx and dy define the upper-left
corner of the region. dw and dh define the width and height, in pixels,
of the region.
Video data is clipped
to the bounds of the video encoding, scaled to the requested drawable region
size (or the closest size supported) and clipped to the bounds of the drawable.
If the port is grabbed by another client, this request is ignored, and
an XvVideoNotify event with detail XvBusy is generated for the drawable.
If the port is not receiving a valid video signal a VideoNotify event
with detail XvHardError is generated for the drawable.
- Returned if the
Xv extension is unavailable.
- Returned if XvGetStill(3x)
to allocate memory to process the request.
if the requested port does not exist.
- Generated if the requested
drawable does not exist.
- Generated if the requested graphics context
does not exist.
- Generated if there were insufficient resources
to process the request.
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