Copyright © 2020 Collabora. Ltd, Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice (including the next paragraph) shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. agl compositor extension that performs a screenshot of the output, which is represented by a 'wl_output' object. A client would call 'take_shot' request and wait until the compositor finishes to write the data to a wayland buffer, moment in which signals back the client with the help of the 'done' event. Clients should wait until the 'done' event is received, if they want to take another screenshot, or take another screnshot of a different output. The client must provide a wl_shm-based wl_buffer of the correct size when taking a shot. The compositor will write the shot into the wl_buffer and then send the 'done' event that signals completion of writing the data. Once the compositor has finished to transfer the data back into the supplied wayland buffer, the client should be able to transfer it to a popular file format on the disk. Takes a screenshot of the wayland output represented by a 'wl_output' object. Clients should first retrieve it using global registry, as well as the 'wl_shm' object in order to create a wayland buffer type of object ('wl_buffer'). Clients can derive the stride and size from the 'wl_output' object, and later on use those when creating shm-based 'wl_buffer', as well as supplying the pixel format. Even sent back to notify client 'take_shot' request has completed. Destroys the 'weston_screenshooter' interface.