Copyright © 2018 Simon Ser
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This protocol allows clients to ask the compositor to copy part of the
screen content to a client buffer.
Warning! The protocol described in this file is experimental and
backward incompatible changes may be made. Backward compatible changes
may be added together with the corresponding interface version bump.
Backward incompatible changes are done by bumping the version number in
the protocol and interface names and resetting the interface version.
Once the protocol is to be declared stable, the 'z' prefix and the
version number in the protocol and interface names are removed and the
interface version number is reset.
This object is a manager which offers requests to start capturing from a
source.
Capture the next frame of an entire output.
Capture the next frame of an output's region.
The region is given in output logical coordinates, see
xdg_output.logical_size. Trying to capture a region spanning outside the
output extents is a protocol error.
All objects created by the manager will still remain valid, until their
appropriate destroy request has been called.
This object represents a single frame.
When created, a "buffer" event will be sent. The client will then be able
to send a "copy" request. If the capture is successful, the compositor
will finally a "ready" event.
If the capture failed, the "failed" event is sent. This can happen anytime
before the "ready" event.
Once either a "ready" or a "failed" event is received, the client should
destroy the frame.
Provides information about the frame's buffer. This event is sent once
as soon as the frame is created.
The client should then create a buffer with the provided width and
height, and send a copy request. It can optionally create a buffer with
the preferred format and stride.
Copy the frame to the supplied buffer. The buffer must have a the
correct size, see zwlr_screencopy_frame_v1.buffer. The buffer needs to
have a supported format.
If the frame is successfully copied, a ready event is sent. Otherwise,
an abort event is sent.
Provides flags about the frame. This event is sent once before the
"ready" event.
Called as soon as the frame is copied, indicating it is available
for reading. This event includes the time at which presentation happened
at.
The timestamp is expressed as tv_sec_hi, tv_sec_lo, tv_nsec triples,
each component being an unsigned 32-bit value. Whole seconds are in
tv_sec which is a 64-bit value combined from tv_sec_hi and tv_sec_lo,
and the additional fractional part in tv_nsec as nanoseconds. Hence,
for valid timestamps tv_nsec must be in [0, 999999999]. The seconds part
may have an arbitrary offset at start.
After receiving this event, the client should destroy the object.
This event indicates that the attempted frame copy has failed.
After receiving this event, the client should destroy the object.
Destroys the frame. This request can be sent at any time by the client.