From c60529087d485fd53be34b86e70ca4ca01bc7a8d Mon Sep 17 00:00:00 2001 From: Emmanuel Gil Peyrot Date: Sat, 2 Oct 2021 18:48:44 +0200 Subject: staging/content-type: Content type hint support This protocol lets clients advertise which kind of content they expect to be displayed on a given surface, so that the compositor can make more informed decisions about its behavior and output configuration. Signed-off-by: Emmanuel Gil Peyrot Signed-off-by: Xaver Hugl --- meson.build | 1 + staging/content-type/README | 5 ++ staging/content-type/content-type-v1.xml | 128 +++++++++++++++++++++++++++++++ 3 files changed, 134 insertions(+) create mode 100644 staging/content-type/README create mode 100644 staging/content-type/content-type-v1.xml diff --git a/meson.build b/meson.build index 36a95e9..8e4059e 100644 --- a/meson.build +++ b/meson.build @@ -41,6 +41,7 @@ staging_protocols = { 'ext-session-lock': ['v1'], 'single-pixel-buffer': ['v1'], 'ext-idle-notify': ['v1'], + 'content-type': ['v1'], } protocol_files = [] diff --git a/staging/content-type/README b/staging/content-type/README new file mode 100644 index 0000000..63258e0 --- /dev/null +++ b/staging/content-type/README @@ -0,0 +1,5 @@ +Content type hint protocol + +Maintainers: +Emmanuel Gil Peyrot +Xaver Hugl diff --git a/staging/content-type/content-type-v1.xml b/staging/content-type/content-type-v1.xml new file mode 100644 index 0000000..d06c11f --- /dev/null +++ b/staging/content-type/content-type-v1.xml @@ -0,0 +1,128 @@ + + + + Copyright © 2021 Emmanuel Gil Peyrot + Copyright © 2022 Xaver Hugl + + 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. + + + + + This interface allows a client to describe the kind of content a surface + will display, to allow the compositor to optimize its behavior for it. + + Warning! The protocol described in this file is currently in the testing + phase. Backward compatible changes may be added together with the + corresponding interface version bump. Backward incompatible changes can + only be done by creating a new major version of the extension. + + + + + Destroy the content type manager. This doesn't destroy objects created + with the manager. + + + + + + + + + + Create a new content type object associated with the given surface. + + Creating a wp_content_type_v1 from a wl_surface which already has one + attached is a client error: already_constructed. + + + + + + + + + The content type object allows the compositor to optimize for the kind + of content shown on the surface. A compositor may for example use it to + set relevant drm properties like "content type". + + The client may request to switch to another content type at any time. + When the associated surface gets destroyed, this object becomes inert and + the client should destroy it. + + + + + Switch back to not specifying the content type of this surface. This is + equivalent to setting the content type to none, including double + buffering semantics. See set_content_type for details. + + + + + + These values describe the available content types for a surface. + + + + The content type none means that either the application has no data + about the content type, or that the content doesn't fit into one of + the other categories. + + + + + The content type photo describes content derived from digital still + pictures and may be presented with minimal processing. + + + + + The content type video describes a video or animation and may be + presented with more accurate timing to avoid stutter. Where scaling + is needed, scaling methods more appropriate for video may be used. + + + + + The content type game describes a running game. Its content may be + presented with reduced latency. + + + + + + + Set the surface content type. This informs the compositor that the + client believes it is displaying buffers matching this content type. + + This is purely a hint for the compositor, which can be used to adjust + its behavior or hardware settings to fit the presented content best. + + The content type is double-buffered state, see wl_surface.commit for + details. + + + + + -- cgit v1.2.3