Name
XvPutVideo - write video into a drawable
Syntax
#include
XXvvPPuuttVViiddeeoo((_d_p_y_, _p_o_r_t_, _d_, _g_c_, _v_x_, _v_y_, _v_w_, _v_h_, _d_x_, _d_y_, _d_w_, _d_h)
Display
*dpy;
XvPortID
port;
Drawable
d;
GC
gc;
int
vx,
vy,
dx,
dy;
unsigned int
vw,
vh;
unsigned int
dw,
dh;
Arguments
-
_d_p_y
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.
-
_p_o_r_t
Defines the port from which to get video.
-
-
_d
Defines the drawable (window) into which video is to be written.
-
-
_g_c
Defines the graphical context.
-
GC components are:
subwindow-mode,
clip-x-origin,
clip-y-origin,
and
clip-mask.
-
_v_x_,_v_y_,_v_w_,_v_h
Define the size and location of the source (video) region
-
to be written. _v_x and _v_y define the
upper-left pixel of the region. _v_w and _v_h
define the width and height, in pixels, of the region.
-
_d_x_,_d_y_,_d_w_,_d_h
Define the location and size of the destination (drawable) region
-
into which the video image is written.
dx
and
dy
define the upper-left pixel of the region.
dw
and
dh
define the width and height, in pixels, of the region.
Description
XvPutVideo writes video into a drawable.
The position and size of the source (video)
rectangle is specified by _v_x_, _v_y_, _v_w, and _v_h.
The position and size of the destination (drawable)
rectangle is specified by _d_x_, _d_y_, _d_w, and _d_h.
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 video is successfully initiated, an XvVideoNotify event with detail
XvStarted is generated for the drawable. If the port is already in
use, its video is preempted, and if the new drawable is different than
the old, an XvVideoNotify event with detail XvPreempted is generated
for the old 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 or if the video signal is interrupted while video is active a
VideoNotify event with detail XvHardError is generated for the drawable.
Returned Values
-
[Success]
Returned if XvPutVideo(3X) completed successfully.
-
-
[XvBadExtension]
Returned if the Xv extension is unavailable.
-
-
[XvBadAlloc]
Returned if there were insufficient resources to process the request.
-
Diagnostics
-
[XvBadPort]
Generated if the requested port does not exist.
-
-
[BadDrawable]
Generated if the requested drawable does not exist.
-
-
[BadGC]
Generated if the requested graphics context does not exist.
-
-
[BadAlloc]
Generated if there were insufficient resources to process the request.
-
See Also
XvPutStill(3X), XvGetVideo(3X), XvVideoNotify(3X)